Abstract: A cab frame includes a support framework, where the support framework includes a bottom frame, a top frame, and a four-upright-column structure supported between the bottom frame and the top frame; the four-upright-column structure includes two front upright columns and two rear upright columns, and an inner dimension of the cab frame increases along the bottom-to-top direction.

Abstract: An in-vehicle stable platform system employing active suspension and a control method thereof is provided. The system includes a vehicle body, an in-vehicle stable platform, an inertial measurement device, an electronic control device, a servo controller set, multiple wheels, and suspension servo actuation cylinders and displacement sensors respectively corresponding to the wheels. The wheels are divided into three groups, which form three support points. The heights of the three support points are controlled to control orientation of the vehicle body. An amount of extension/retraction of the suspension servo actuation cylinders required to cause the in-vehicle stable platform to return to a horizontal level is calculated according to a measured pitch angle and a roll angle of the in-vehicle stable platform, and when a vehicle travels on an uneven road, the extension/retraction of each suspension servo actuation cylinder is controlled to cause the in-vehicle stable platform to be horizontal.

Abstract: A cab includes: a pillar member; a beam member; and a rib member. The pillar member extends in an up-down direction. The beam member extends in a left-right direction. The beam member is connected to an upper end of the pillar member. The rib member is provided at a corner portion where the pillar member and the beam member intersect with each other. The rib member is connected to the pillar member and the beam member. The rib member is embedded in at least one of the pillar member and the beam member.

Abstract: A secondary retention device includes a bolt inserted through a cab floor and a modular saddle mount. A nut and the bolt retain the cab floor and the modular saddle mount together. A first alternative includes a yoke extending upward from the modular saddle mount, an extension plate extending downward from a bottom of the cab floor and a lock pin. A second alternative includes a bent over edge of the cab floor, a bent-up edge of the modular saddle mount and the lock pin. A third alternative includes a retention plate extending downward from the cab floor, a slot opening formed through a modular saddle mount to receive the retention plate and a fastener. A fourth alternative includes a curved tab extending upward from a modular saddle mount and a slot opening formed through the cab floor to receive the curved tab.

Abstract: Power machine frames for power machines such as skid steer loaders that include features for aiding in the manufacture of the power machines, providing space saving advantages in the design of the power machine, and/or providing performance advantages for the power machine.

Abstract: Land vehicles, modular systems for forming monocoques of land vehicles, and methods of forming monocoques of land vehicles using modular systems are envisioned. In certain embodiments, the land vehicles are provided as delivery vehicles and/or utility vehicles. A land vehicle includes a monocoque supporting a plurality of wheels to permit movement of the vehicle relative to an underlying surface in use of the land vehicle.

Abstract: A sleeper panel is provided for use with each of the passenger and driver sides of a sleeper cab. The entire upper ends of the sleeper panels have a top flange which is secured to the underside of the sleeper cab. Structure is provided to maintain the curved portions of the sleeper panel in their desired radius of curvature. A cab panel is also described which is ideally suited for use on a truck cab so as to be positioned forwardly of the sleeper panels thereby providing an esthetic appearance to the vehicle.

Abstract: A vehicle occupant protection structure includes a seat body including a seatback configured to support a back of an occupant, and a shell section including a portion configured to face a side of the occupant whose back is supported by the seatback and the portion configured to restrict movement of the occupant in a seat width direction in a case of a vehicle collision.

Abstract: An ingress/egress arrangement for a machine comprises an operator cabin and a walkway system outside the operator cabin. The operator cabin can include a plurality of posts, including first post and a second post, and a door rotatably coupled to the first post so as to be movable between at a fully open position and at a fully closed position. An opening in the operator cabin between the first post and the second post defines a first operator ingress/egress point. The walkway system provides operator access to inside the operator cabin via the door and the opening, and provides operator access to outside the operator cabin. The door, in the fully open position, can restrict operator access toward a front of the machine and can allow operator access simultaneously to the walkway system and a second operator ingress/egress point.

Abstract: A device for influencing vertical dynamics of an agricultural vehicle includes a mass mounted on the agricultural vehicle, a positioning system for controlling movement of the mass in vertical direction, a sensor device configured to detect a surface profile of an upcoming vehicle path segment, and an electronic control unit adapted to calculate an expected disturbance input for the upcoming vehicle path segment based on the detected surface profile. The electronic control unit operably controls the positioning system to execute a compensation movement of the vehicle that reduces the expected disturbance input by means of the mass.

Abstract: A suspension system includes a hydraulic cylinder having a piston chamber in which a piston moves and a rod chamber in which a rod moves. The hydraulic cylinder operably moves between a retraction and an extension. The system also includes a throttle valve, a branching, and a hydraulic reservoir fluidly coupled to the hydraulic cylinder. A fluid flow from the piston chamber is divided at the branching into a first fluid flow portion and a second fluid flow portion. The first fluid flow portion flows to the rod chamber of the hydraulic cylinder, and the second fluid flow portion flows through the throttle valve to the hydraulic reservoir.

Abstract: A suspension system for controlling multiple degrees of freedom of a cab of a vehicle has mounting pads that support the cab with a spring assembly connected between the chassis and each mounting pad, allowing the cab to move with multiple degrees of freedom. A lateral rod connects with one of the mounting pads, with the chassis, and restricts sideways motion of the cab. A longitudinal rod connects with one of the mounting pads, with the chassis, and restricts forward motion of the cab. A stabilizer bar connects with one of the front mounting pads, one of the rear mounting pads, the chassis structure, and controls forward pitch rate of the cab. A roll control bar connects with the rear mounting pads and the chassis structure, and controls lateral roll rate of the cab.

Abstract: An operator's cab arrangement for a construction machine (100) is proposed which comprises side wall elements, a front wall element, a rear wall element and a roof element (4). At least one of said side wall elements is closable by a door element (1) which is pivotably mounted to said arrangement with a pivot axis being substantially vertical with respect to said construction machine (100). Said door element (1) is inclined towards a central axis of said construction machine when closed.

Abstract: A suspension system for a work vehicle includes a rear suspension assembly that includes a first shock absorber assembly and a second shock absorber assembly, such that each of the first and second shock absorber assemblies has a first end that couples to a cab of the work vehicle and a second end that couples to a chassis of the work vehicle. The rear suspension assembly further includes a brace extending laterally between the first end of the first shock absorber assembly and the first end of the second shock absorber assembly relative to a direction of travel of the work vehicle, such that the first end of the first shock absorber assembly and the first end of the second shock absorber assembly are coupled to the brace.

Abstract: A tractor includes a cabin composed of a plurality of frames; a vehicle body installed at an lower portion of the cabin and composed of a guide bar, an engine and a transmission to supply power; links connecting the cabin and the transmission at a front portion; first and second front elastic cylinders installed at one side of the links; and first and second rear elastic cylinders connecting the cabin and the transmission at a rear portion.

Abstract: A knuckle boom crane at least comprising: a pedestal; a tower 2 arranged on top of the pedestal; an operator cabin 4 fixed to the tower 2; a machine house 3; a winch 5 with a wire 6 positioned at an upper end of the tower 2 so that the upper rim of the reel of the winch 5 protrudes above the top of the tower 2; or an alternative wire routing with a winch with a wire arranged external to the crane where the wire is fed to a first sheave arranged at an upper end of the tower 2 so that the upper rim of the sheave protrudes above the top of the tower 2; a main boom 14 which is at its first end is pivotally connected to the tower 2 at its second end the main boom 14 is pivotally connected with a first end of a knuckle boom 12, the second end of the knuckle boom is provided with at least one second sheave 10, where the main boom 14 is provided with an aperture 7 proximate to its first end.

Abstract: A hard top structure for a vehicle having a roll-bar cage is provided. In one exemplary embodiment, the hard top structure may include a frame adapted to overlay on and attach to the roll-bar cage. The frame may include an upper frame member that defines one or more upper frame openings. Further, the upper frame member may have a channel member that extends around at least a portion of each upper frame opening. The hard top structure may also include one or more upper frame panels with each corresponding to one of the upper frame openings. Each upper frame panel may have an insert member that extends around at least a portion of a perimeter of that panel. Also, each upper frame panel may be positioned in one of the upper frame openings so that the corresponding insert and channel members form a seal joint.

Abstract: Counterweight device in which an accumulator is disposed inside a counterweight, the work machine connecting the accumulator to piping at the machine body side and capable of moving a machine body or work device even though the counterweight is not attached to the body. A counterweight is fixed to a mount base at the rear end part of a swinging frame, an accumulator installed inside the counterweight by means of a temporary placing support structure. The temporary placing support structure can be temporarily placed on and attached to the end plate at the swinging frame side before attaching the counterweight.

Abstract: Suspension unit, comprising a control unit, for a utility vehicle, wherein the utility vehicle has a body floor, to which a first and a second axle are connected, wherein the utility vehicle comprises at least one vehicle seat and/or a vehicle cab that can be suspended by a suspension device relative to the body floor, wherein the vehicle seat and/or the vehicle cab is arranged substantially above the second axle seen in a vertical direction, wherein, when driving over a bump with the first axle, a value of a deflection of the first axle by the disturbance can be determined by at least one sensor, and wherein the suspension device of the vehicle seat and/or vehicle cab can be varied by the control unit before or upon driving over the disturbance with the second axle.

Abstract: A system for level regulation of a driver's cab of a commercial vehicle relative to a chassis of the vehicle includes a spring-loaded bearing in order to support the driver's cab in a sprung manner on the chassis of the vehicle; a distance sensor device arranged to record relative movements and/or a distance between the driver's cab and the chassis of the vehicle; and a control device that is arranged for variable control of the spring-loaded bearing, wherein signals of the distance sensor device are used to control the spring-loaded bearing. The spring-loaded bearing can be adjusted to a first height position (h1), so that the distance between the driver's cab and the chassis of the vehicle is controlled by the control device to a first target distance. The spring-loaded bearing can be adjusted to at least one second height position (h2), so that the distance between the driver's cab and the chassis of the vehicle is controlled by the control means to a second target distance.

Abstract: The configuration of a vehicle side structure according to the present invention is characterized by including an upper pillar reinforcing member that forms an upper edge of a front door opening of a vehicle, a pillar hinge reinforcing member that forms a front edge of the front door opening, and a side sill strengthening member that forms a lower edge of the front door opening, wherein the pillar hinge reinforcing member has a hinge bulged portion that is bulged toward the vehicle exterior, along a vertical direction, the hinge bulged portion has at least one ridge line that is curved so as to protrude toward the vehicle front side, and the at least one ridge line links a joining point between the pillar hinge reinforcing member and the upper pillar reinforcing member and a joining point between the pillar hinge reinforcing member and the side sill strengthening member.

Abstract: Suspension system for vehicle seats, in particular for utility motor vehicle seats, comprising at least a first and a second part, the two parts being mounted oscillatorily movable and spring-loaded with respect to one another, wherein a closed hydropneumatic circuit is provided which comprises at least one control element, connected to at least one of the two parts, and at least one first hydropneumatic spring connected in series therewith, a hydraulic pressure of a hydraulic medium in the circuit being convertible into a force acting between the two parts by means of an action surface arranged in the control element, the pressure being dependent on a gas pressure in a gas volume of the first spring.

Abstract: A cradle assembly includes a body having a front end, a rear end, a first side, a second side, and a length defined between its front end and rear end. The body has a first elongated member disposed along the first side of the body between its front and rear ends and a second elongated member disposed along the second side of the body between its front and rear ends. The body has a pump mount positioned at the front end and coupled between the first member and the second member. A flywheel cover is coupled between the first member and the second member at a location between the front end and rear end. The body also has a coupling mechanism disposed at its rear end and coupled between the first member and the second member, the coupling mechanism adapted to be coupled to a chassis of a work machine.

Abstract: A floor member includes a floor plate extending in a length direction along a front-rear direction of a cab. The floor plate includes front-left corner portion, front-right corner portion, rear-left corner portion, and rear-right corner portion; a first vertical beam member; a second vertical beam member; and a plurality of support members which support the first vertical beam member, the second vertical beam member, and the floor plate in respective regions including a region where the front-left corner portion and a first front end overlap each other, a region where the rear-left corner portion and a first rear end overlap each other, a region where the front-right corner portion and a second front end overlap each other, and a region where the rear-right corner portion and a second rear end overlap each other.

Abstract: A coupling plate is arranged below an attaching member. A vibration suppressing member is mounted between the attaching member and the coupling plate. The first controller main body is arranged above the attaching member. A coupling member connects the coupling plate and the first controller main body.

Abstract: Provided is a working machine including a console box restrained from wobble. The working machine includes a machine body having an operator's seat and a console box at a side of the operator's seat. The console box includes a box body and a box cover covering the box body. The box cover internally includes a first cover half installed on the box body with first fitting portions and a second cover half internally including second fitting portions fitted with the respective first fitting portions. The second cover half abuts on the first cover half and coupled to the first cover half by respective interfittings of the first and second fitting portions. The box body includes a support portion making contact with an inner surface of the second cover half to support the second cover half.

Abstract: An industrial truck has a canopy with two columns arranged laterally on the vehicle, which support a crown equipped with one or more belts. The one or more belts are connected with an assembly plate having an opening for a glass roof, which is glued in a circumferential profile frame. The profile frame is thereby connected with at least one belt and/or support profiles extending between the belts.

Abstract: A construction machine comprising an undercarriage designed as a running gear and an upper carriage with a housing having side walls, wherein for access to the housing at least one housing opening with an access wall is provided, which is adjustable into an open position, and in an area in front of the housing opening a horizontal gangway is formed. At least one pull-out element is provided which can be pulled out horizontally between a retracted position and a pulled out position, in which the pull-out element projects horizontally from the housing, and in order to form the gangway a base plate is provided on the pull-out element.

Abstract: A refuse compactor, comprising a machine frame, transportation devices, a drive motor, a driver's cab which is arranged on the machine frame, and an air intake device with at least one intake opening, wherein the air intake device is arranged in the forward direction behind the driver's cab and extends at least partly over the rear side of the driver's cab up to the roof of the driver's cab in the vertical direction.

Abstract: A cabin is disclosed for use with a mobile machine. The cabin may have a floor and a roof. The cabin may also have at least one A-post located at a leading end relative to a forward travel direction of the mobile machine, and a C-post located at a trailing end opposite the at least one A-post. The C-post may have two terminal ends located at the floor, and a single terminal end located at the roof.

Abstract: A working machine includes: a right side panel; a left side panel; and a joint structure configured to joint an upper portion of an intermediate portion of the right side panel and an upper portion of an intermediate portion of the left side panel to each other. The joint structure includes: a lower member configured to joint upper portions of the right side panel and the left side panel to each other; a upper member arranged above the lower member with a clearance kept from the lower member; a front joint member configured to joint a side of a front end of the upper member and a side of a front end of the lower member to each other; a rear joint member configured to joint a side of a rear end of the upper member and a side of a rear end of the lower member to each other.

Abstract: An operator cab for an operator of heavy equipment, the cab including a first opening and a second opening through which an operator can enter or exit the cab. The cab is mounted on the heavy equipment next to an implement for performing work. The first opening and the second opening of the cab are not generally parallel to each other. The cab is operable to rotate to a first position with respect to the deck of the heavy equipment, such that the operator can exit through the first opening and onto the deck. The cab is also operable to rotate to a second position with respect to the deck of the heavy equipment, such that the operator can exit through the second opening and onto the deck. The multiple openings in the cab assist the operator in safe ingress and egress to and from the deck and cab.

Abstract: A cabin system to be mounted on a vehicle body includes a driver's seat, an air conditioner body for indoor air conditioning disposed downwardly of the drive's seat, a plurality of support pillars constituting a cabin framework, a ceiling portion, and a main duct having a hollow tubular construction, the main duct forming therein an air passageway for the indoor air conditioning. The main duct includes, at a lower portion thereof, a duct connecting opening to be connected to the air conditioner body and also includes, at a lateral portion thereof, a support pillar engaging face. The main duct is attached through the support pillar engaging face to one of the support pillars along an indoor side peripheral face of the one support pillar. The support pillar engaging face of the main duct and the indoor side peripheral face of the one support pillar have profiles complementary with each other.

Abstract: Provided is a construction machine capable of easy removal of an electric-component box for maintenance of a maintenance-requirement device, including a seat stand, a partition wall provided in an under-seat space under the seat stand to define a front space, an electric-component box installed in the front space, a maintenance-requirement device rearward of the front space, and a harness connecting an electric component in the electric-component box to an external device and including a downward-extending portion extending downward from the height of a wiring port in the seat stand and an upward-extending portion extending upward from the height of a lower end of the downward-extending portion, thus routed in a devious path including allowance for allowing removal of the electric-component box between a position for closing a rear opening in the partition wall and a position for allowing maintenance work for the maintenance-requirement device through the rear opening.

Abstract: A bulldozer includes a blade, an engine, a first exhaust treatment device, a second exhaust treatment device, a relay connection pipe, and an engine cover. The first exhaust treatment device is disposed in front of the engine and lower than the upper surface thereof. The second exhaust treatment device is disposed above the first exhaust treatment device. The relay connection pipe is disposed above the first exhaust treatment device and below the second exhaust treatment device. The longitudinal directions of the first and second exhaust treatment devices extend along the vehicle lateral direction. As seen from the top of the vehicle, the second exhaust treatment device overlaps at least a part of the first exhaust treatment device. As seen from the side of the vehicle, the front edge of the first exhaust treatment device is positioned forward of the front edge of the second exhaust treatment device.

Abstract: A window protection apparatus on a working machine features a reel rotatably supported at an exterior of the operator cabin in a position proximate a top end of the window for rotation about a horizontal axis and a flexible window covering wound on the reel such that rotation of the reel in a first direction deploys a free end of the window covering from the reel, and rotation of the reel in an opposite second direction retracts the free end of the window covering back toward said reel. A retaining member is mounted at the exterior of the operator cabin in a position proximate a bottom end of the window, and a retaining element is attached to the window covering proximate the free end thereof for engagement with the retaining member to secure the window covering in a closed position spanning downwardly from the reel over the window.

Abstract: [Problem] To provide a construction machine with a step arranged in an operator's cab, which makes it possible to enlarge the shape or dimensions of the step without increasing a swing radius. [Solution] In a compact excavator provided with a step that facilitates ingress to and egress from the operator's cab (6), the step is provided at a part thereof with an outwardly-extending edge portion (12a) that extends out beyond an opening plane (16) forming an ingress/egress opening (20), and a door (5) is provided at a part thereof with a convex part (5a) that covers the outwardly-extending edge portion (12a) of the step when the door (5) is in a closed position.

Abstract: A truck includes a frame, an operator cab on the frame and a drive axle having a differential. The differential can be connected to a drive shaft. A fairing for directing air flow around the differential is attached to the frame forward of the drive axle and forward of the differential. The fairing can have a non-deflected position and a deflected position.

Abstract: A first blowing section is arranged inside a cab body on a right side, and blows cool air or warm air. A second blowing section is arranged inside a cab body on a left side, and blows cool air or warm air. An inlet, a first vent, and a second vent are formed in a box body of a distribution box. The inlet opens toward the left side and introduces cool air or warm air from an air-conditioning unit. The first vent opens toward the right side. The second vent opens downward. A first duct, which is connected to the first vent, supplies the first blowing section with cool air or warm air. A second duct, which is connected to the second vent and extends beneath a seat, supplies the second blowing section with cool air or warm air.

Abstract: A right front housing cover is arranged in the right side of a working mechanism, and a first control valve is arranged in a front portion side of a valve accommodation room that is covered with the right front housing cover. Further, a signal control valve block is arranged in the back side of the first control valve and in the upper side of the first control valve, and a solenoid valve is arranged in the back side of the signal control valve block. A front surface plate forming part of the right front housing cover has a lower side is inclined in an oblique downward direction toward the forward side, and is arranged along a virtual line that extends in an oblique downward direction through a front end portion of the first control valve and a front end portion of the signal control valve block.

Abstract: A cab suspension and repositioning system (110) for a truck includes a control arm assembly (130) having two control arms (134, 136) with distal ends pivotably attached to a truck chassis (112) and proximal ends pivotably attached to a cab (102), and one or more follower control arms (144, 146) having a distal end pivotably attached to the chassis (112) and a proximal end pivotably attached to the cab (102). Cab suspension assemblies (114, 170) releasably lock the cab (102) to the chassis (112) during operation. The control arm assembly (130) further provides motion control to the cab (102). Hydraulic cylinders (140) engage the control arm assembly (130) and are operable to move the cab (102) between an operating position adjacent the chassis and an access position away from the chassis (112) substantially without rotating the cab (102). A control system (200) powers the cylinders (140) and controls the transition between the operating and access positions.

Abstract: To make it possible to arrange an engine control unit in a narrow arrangement space by, for multiple purposes, using a support member for attaching an operation device. On a machine base supported by a traveling unit, an engine is mounted and a controlling part having an operator's seat is arranged; on one of left and right sides of the controlling part, a vehicle accessory is mounted and covered with an accessory cover; and on a front side of the operator's seat of the controlling part, and near the accessory cover, a support member is provided upright to provide an operation device. Between the accessory cover and the operation device, an engine control unit that controls the engine is arranged, and the engine control unit is attached to the support member.

Abstract: Disclosed is a safety bar having a resiliently flexible neck connecting a shaft to a head. The head includes a surface connected to at least one pair of spaced apart opposing legs. The surface and the spaced apart opposing legs define a passage and a channel intermediate the surface and the passage. Also disclosed is a method of making such a safety bar. The safety bar can be installed in a reach lift truck for protecting an operator of the reach lift truck from injury due to accidental impact.

Abstract: An operator's cab for a shuttle car including a cab frame, a window assembly, and a pressurization system. The cab frame defines an interior chamber and an opening. The window assembly includes a pane and a pane seal. The pane is coupled to the cab frame such that the pane covers the opening and encloses the interior chamber. The pane seal is positioned between the pane and the cab frame. The pressurization system provides a positive pressure in the interior chamber relative to the surrounding environment. The pressurization system includes a blower and a motor for driving the blower. The blower is in fluid communication with the interior chamber.

Abstract: A compact excavator includes an operator's cab with a door capable of opening and closing an opening surface forming a boarding port. The door includes one door piece, and has a flexing portion which is closer to a front pillar than the central portion of the door when the door is in a closed state. The flexing portion is shaped to have a first area so formed that when the door is in a closed state, the first area approaches the opening surface as the first area approaches the front pillar, and a second area arranged continuously with the first area and nearer the front pillar than the first area and being formed so that the second area draws away from the opening surface as the second area approaches the front pillar.

Abstract: The present invention provides a working vehicle, including a power source unit, an air intake passage, and an air exhaust passage all of which are arranged inside a roof portion, wherein the power source unit is disposed in a portion close to a center in a vehicle body width direction, the air intake passage guides air taken from an air intake port that is provided in a center portion in the vehicle body width direction, to the power source unit, and the air exhaust passage is bent in a planar view such that air supplied to the power source unit flows in a bent manner toward an air exhaust port that is provided in one end portion in the vehicle body width direction.

Abstract: An arrangement, comprising a bearing support (1), a mass to be supported (2) and a support (3), which is connected with the mass to be supported (2) and supports itself on the bearing support (1), wherein the mass to be supported (2) is movable relative to the bearing support (1) and wherein a linkage element (4) is provided, which ties the bearing support (1) onto the mass to be supported (2), in consideration of the problem, an arrangement is to be indicated in which a support is easily and permanently connected with a bearing support in a stable manner, wherein the linkage element (4) includes a disk-shaped section (5) and a bolt-shaped section (6), which are designed as one piece together.

Abstract: A cab (8) is provided with a cab box (13) in which a space between each of pillars (14 to 18) is covered by each of surfaces (13A to 13F) and the inside becomes an operator's room (13G) and a door (24) mounted on the left intermediate pillar (16). On a rear surface portion (14D) of the left front pillar (14), a protruding portion (23A1) of a mounting plate (23A) is provided in a state protruding to the door (24) side. On a mounting opening (24E) on the inner surface side of the door (24), a door holding member (28) engaged with an engaging member (23) and holding the door (24) at a closed position is provided. On the door (24), a retreating recessed portion (29) for avoiding interference with the protruding portion (23A1) of the mounting plate (23A) is provided on the front side from the door holding member (28).

Abstract: A first blowing section is arranged inside a cab body on a right side, and blows cool air or warm air. A second blowing section is arranged inside a cab body on a left side, and blows cool air or warm air. An inlet, a first vent, and a second vent are formed in a box body of a distribution box. The inlet opens toward the left side and introduces cool air or warm air from an air-conditioning unit. The first vent opens toward the right side. The second vent opens downward. A first duct, which is connected to the first vent, supplies the first blowing section with cool air or warm air. A second duct, which is connected to the second vent and extends beneath a seat, supplies the second blowing section with cool air or warm air.

Abstract: A mount structure for a control valve unit is provided to permit selective mounting of a small first control valve unit or a large second control valve unit on bodies of construction machines of different models the same family without incurring an increase in the number of kinds of parts or components. The control valve unit may be a small first control valve unit or a large second control valve unit. The mount structure is constructed such that upon mounting the first or second control valve unit on a bracket on which the first or second control valve unit may be selectively mounted, a barycentric position of the bracket with the first control valve unit mounted thereon and a barycentric position of the bracket with the second control valve unit mounted thereon are located on an imaginary line connecting paired hanging-member fixing portions of the bracket.