Abstract: The present disclosure relates to a vibro-hammer 1 connected to heavy construction equipment, and more particularly, a vibro-hammer 1 having a side grip in which vibrations are prevented from being transmitted to a connected heavy equipment machine to avoid a problem such as a change in a perforation position, the vibro-hammer 1 is firmly connected to a perforated pile to transmit vibrations generated in a gear box to the perforated pile through the side grip and improve workability, arms are gear-coupled to each other to prevent the arms and the side grip from being released from each other due to frequent vibrations, a pair of arms and the side grip can come into close contact with the perforated pile or separated from the performed pile by a single cylinder, the side grip can be easily replaced according a shape of the perforated pile, and applicability and workability is improved.

Abstract: An electric tool includes a gripping portion, a working portion rotatably connected to the gripping portion about an axis, an output shaft moving in a reciprocating manner and accommodated in the working portion, and a gear box accommodated in the gripping portion for driving the output shaft. The gear box has an opening so that the output shaft is moveable from one end to the other end of the opening when the working portion is rotated relative to the gripping portion about the axis. A leakage-preventing device, such as a bushing, is arranged at the opening so that the lubricating grease can be avoided from leaking.

Abstract: A method and apparatus for angularly drilling during a tapping procedure into a pressurized multiple strings of coaxially situated tubulars for wells and/or platforms which have overturned wherein the tapping occurs underwater via a diver or remotely operated vehicle.

Abstract: The object of the invention is to provide a telescopic feeder which is easier to handle. A first beam is intended to be used in sliding cooperation with a second beam in a telescopic feeder for a rock drilling machine. The first beam comprises at least one guiding stud intended to be guided into a recess in the second beam as the second beam and the first beam are retracted to an end position. The guiding stud is used for locking the first beam in relation to the second beam in a fixed position as the telescopic feeder is fully retracted to an end position.

Abstract: A deep-hole boring machine (100) includes a base (11) to be fitted to an upper face of a floor, a pillar (14), a fixing mechanism (40), a guide member (15), a rotary tool (17), a tool rotation driving section (16), a rising/descending mechanism (50), a guide base (60) and a tool guide mechanism (30). The deep-hole boring machine 100 can be used to bore a vertical hole or an inclined hole in a concrete in a construction site.

Abstract: A hand-held power tool for driving a working tool (1) includes a drive belt (3), first and second arms (5a, 5b) longitudinally displaceable relative to each other and carrying respective deflection rollers (6) of the drive belt (3), a belt tensioning device (4) located between the first and second arms (5a, 5b) and including a spring (8) preloaded against the first arm (5a), and a displaceable pressure piston (9) located between the spring (8) and the second arm (56).

Abstract: A self-supporting pneumatic hammer positioner for effortless command and control by an operator of a pneumatic hammer. The positioner comprises a rigid elongated template having a handle at a first end portion thereof, a saddle mount for a pneumatic hammer at a second end portion thereof, and a 3-axes pivotal mount integral to an intermediate section of the elongated template. An articulated boom member is provided, having an inner end portion and an outer end portion, its inner end portion pivotally mounted to the 3-axes pivotal mount. The boom member outer end portion is pivotally mounted about a one-axis mount to a ground anchor base.

Abstract: A self-supporting pneumatic hammer positioner for effortless command and control by an operator of a pneumatic hammer. The positioner comprises a rigid elongated template having a handle at a first end portion thereof, a saddle mount for a pneumatic hammer at a second end portion thereof, and a 3-axes pivotal mount integral to an intermediate section of the elongated template. An articulated boom member is provided, having an inner end portion and an outer end portion, its inner end portion pivotally mounted to the 3-axes pivotal mount. The boom member outer end portion is pivotally mounted about a one-axis mount to a ground anchor base.

Abstract: The present disclosure provides a coring guide for converting a mine roof bolter into apparatus suitable for guiding a coring rod, or drill, into a mine roof, as well as a method for obtaining a geological core from the mine roof using the guide. The guide includes a pair of jaws, wherein each jaw has an adapter end and a pivotable end. The adapter end of each jaw includes a cavity that faces a cavity included in the adapter end of the other jaw, such that the closed jaws form at least a major portion of a cylindrical coring cavity that accommodates a coring rod. Each jaw includes means for fixing the rod guide within a mine roof bolter apparatus such that when the coring guide is positioned between the jaws and the jaws are partially closed such that they enclose the coring rod, the roof bolter causes the coring rod to penetrate the mine roof and obtain a core sample.

Abstract: A rock bolter has a drill and a bolt driver, both mounted to a turret that rotates relative to a base to align either the drill or the bolt driver with a work axis. A stinger/centralizer has two head elements, each advanced along a curvilinear path. When advanced, the head elements mate to provide a centralizer passage on the work axis. A supplementary stinger affixed to the base extends to engage the rock surface and provide stability as the head elements are retracted. The drill and the bolt driver are mounted on carriages activated by a common mechanism. A drill carriage disabling surface is affixed to the base to block the drill carriage when the drill is off the work axis, and a bolt driver carriage disabling surface is affixed to the base to block the bolt driver carriage when the bolt driver is off the work axis.

Abstract: In the arrangement, a feed beam made of an aluminum profile comprises a slide guide frame, whereby the outer surface of the slide guide frame and respectively, the inner surface of the slide guide are shaped and dimensioned in such a manner that when the slide guide is on the slide guide frame, they are tight against one another. The other edge of the slide guide flame and respectively, the corresponding edge of the slide guide are shaped in such a manner that when the slide guide is mounted in place, its edge is shape-locked relative to the slide guide frame. The slide guide is also secured by separate securing mechanism to the feed beam in such a manner that it cannot move either in the cross or longitudinal direction relative to the feed beam.

Abstract: A direction boring machine is disclosed having elongated boom carried on a utility truck along which a drill head in longitudinally moved by a drive chain. The drill head is adapted to receive a plurality of drill stems, the outermost of which carries a drill bit. The boom is split at a predetermined longitudinal point to define first and second boom sections with the first boom section mounted on the utility truck. The second boom section is connected to the first boom section through a mechanical pivot that permits the second boom section to be pivoted between an operating position in which it is co-linear with the first boom section and a transport position in which the second boom section is upwardly pivoted or folded to overlie the first boom section. The mechanical pivot defines a pivot point between the boom sections that is disposed longitudinally inward of the boom split and above the longitudinal axis of the boom.

Abstract: The apparatus comprises a mine shaft roof bolting machine for drilling holes in a mine shaft roof in combination with an apparatus for controlling the thrust applied to the drill rod, commonly known as a pinning rod, to ensure that a buckling failure of the pinning rod will not occur. The thrust is controlled by a computer in conjunction with a solenoid controlled relief valve which is actuated by commands from the computer. The computer determines the length of the pinning rod exposed below the mine shaft roof from data received from one or more of the following sensors: an electronic device for measuring hydraulic cylinder rod extension, contact switches, rotary encoders, proximity switches, and ultrasonic transceivers and associated circuitry.

Abstract: Apparatus for manipulating a tool which is particularly suited for use in drilling and inserting bolts into thin seams of mine workings. The apparatus (100) comprises a reaction support member (4) to support the tool, a chuck (1) for holding the tool, mounting member (12) in which the chuck (1) is mounted, and a lever linkage (13) connected between the mounting member (12) and the support member (4). The lever linkage (13) comprises parallel chuck orienting members (5, 10) connecting the mounting member to a control member (9), said control member being adapted to manipulate the chuck orienting members and to control the orientation of the chuck. The lever linkage further comprises first and second links (14, 15) each having first and second ends. The links are pivotally attached to each other at the first ends thereof. The first link is pivotally attached at the second end thereof to the mounting member and the second link is pivotally attached at the second end thereof to the support member.

Abstract: Ground piercing attachment for a tractor comprising a bracket which is adapted to be mounted to the lower end of the bucket of a tractor, an elongated bar and connector means for mounting the bar on the bracket so that the longitudinal axis of the bar assumes a vertical position irrespective of the orientation of the tractor so that raising of the bucket enables the bottom end of the bar to be positioned above the ground and subsequent lowering of the bucket causes the bar to be driven into the ground.

Abstract: A rock drilling machine is swingably carried on a pivotable drill boom. The rock drilling machine is fed along a drilling axis in response to a feeding movement applied by the drill boom. A set angle value is fed to a servo control system. During drilling, an actual angle value in the form of the angular position in space of the rock drilling machine is fed to the servo control system. The servo control system governs continuously a positioning motor which positions the rock drilling machine relative to the drill boom in such a way that the actual and set values coincide, thereby causing the rock drilling machine to follow the drilling axis.

Abstract: A rock drilling machine is swingably carried on a pivotable drill boom. The rock drilling machine is fed along a drilling axis in response to a feeding movement applied by the drill boom. A set angle value is fed to a servo control system. During drilling, an actual angle value in the form of the angular position in space of the rock drilling machine is fed to the servo control system. The servo control system governs continuously a positioning motor which positions the rock drilling machine relative to the drill boom in such a way that the actual and set values coincide, thereby causing the rock drilling machine to follow the drilling axis.

Abstract: The invention comprises generally apparatus for use with an underground mine-shaft roof-bolting machine having a torque motor, a pinning rod held for rotation by the torque motor, a controllable arrangement for exerting upward thrust on the torque motor to force the pinning rod upwardly into the roof of a mine shaft, and a manual control for the upward thrust arrangement. An infrared source is held stationary with respect to the rod, and a detector moves upwardly with the rod. The detector receives radiation from the source and emits a signal which varies in accordance with the source to detector distance. This signal is used to control the upward thrust applied to the torque motor in accordance with the length of a pinning rod exposed below the roof being bolted. In one embodiment, the detector produces a signal based on the intensity of the received light.

Abstract: Roof bolter and process for resin bolting a mine roof. The roof bolter comprises combined means for drilling and resin inserting in one position, means for bolt inserting in a second position, and means for positioning the roof bolter first into one and then into its second positions. The process comprises drilling a hole in the mine roof and inserting in tandem resin into the hole and, inserting into and securing a bolt within the hole. Preferably, the roof bolter and the process are automated and remotely controlled.The invention further includes a device designed for attachment to a three-position resin type roof bolter and for converting it to a two-position resin type roof bolter.

Abstract: The invention comprises generally apparatus for use with an underground mine-shaft roof-bolting machine having a torque motor, a pinning rod held for rotation by the torque motor, a controllable arrangement for exerting upward thrust on the torque motor to force the pinning rod upwardly into the roof of a mine shaft, and a manual control for the upward thrust arrangement. In a first embodiment, a contoured cam rotates in dependence on the elevation of the torque motor, while a valve controlled by the cam limits the maximum upward thrust applied to the torque motor such that the maximum upward thrust on the torque motor is reduced when the torque motor is at a comparatively low elevation and is increased when the torque motor is at a comparatively higher elevation. Variations of the cam arrangement permit adjustment for use in mine shafts having different roof heights, and permit use with different types of roof-bolting machines.

Abstract: A mining vehicle has a body with a center boom extending forwardly from the body. A temporary roof support is mounted on the outer end of the center boom. The roof support has a base, a telescopic column, and a cross beam on top of the column with auxiliary beams pivotally connected to the cross beam to engage the roof. Hydraulic jacks are connected between the base and the outer ends of the beams, respectively. A pedestal is pivotally mounted on the front end of the body, on each side of the center boom, to support a drill boom. A drill head is pivotally mounted at the outer end of the drill boom and is vertically movable by the drill boom for roof drilling. Each drill boom has the end opposite the drill head received in a track on the pedestal which serves to maintain the drill head on a vertical axis in any position of the drill boom. Each pedestal, at its inner end, has a laterally extending arm, the outer end of which is pivotally connected to the body at a pivot joint.

Abstract: A drill boom arrangement comprises a boom proper that is universally pivotably carried by a boom support. The boom carries a feed beam for a rock drill. The boom is swingable on the support by means of two hydraulic cylinders forming a tripod and the feed beam is swingable on the boom by means of two hydraulic cylinders forming another tripod. One of the boom swinging cylinders (17) is coupled in series with one of the feed beam swinging cylinders (28) and these two cylinders are actuated by means of a common direction control valve (58). The boom swinging cylinder (17) can be short-circuited so that the feed beam can be swung upon actuation of the direction control valve (58) while the boom is arrested. The other boom swinging cylinder (16) is coupled in series with the other feed beam swinging cylinder (29) to a common direction control valve (57) in the same way. A joy-stick (59) is coupled to the two direction control valves (57, 58) through pilot valves and pilot lines (64-67).

Abstract: An operator cab and drilling assembly for a roof drilling and bolting device. The cab comprises a floor and a canopy having extensible hydraulic means for adjusting the distance between the cab floor and at least the front edge of the canopy. A horizontal rail extends along the entire length of the front edge of the floor and is spaced therefrom. A roof bolting and drilling apparatus slidably engages the horizontal rail. The rail is mounted by swinging arms to always be parallel to the cab floor.

Abstract: Rock drilling equipment includes a boom carrying an extensible beam arrangement supporting a drilling mast, the extensible beam arrangement comprising a support pivotally mounted on the boom, a first elongated element slidably mounted on the support for movement longitudinally of the first element, a second elongated element slidably mounted on the first element for movement longitudinally of the first element, and drive transmission means sensitive to movement of the first element and adapted to move the second element relative to the support upon sensing relative movement between the support and first element.

Abstract: Apparatus for drilling a pier hole under the ledge of a building foundation to permit lifting the foundation for relevelling of the building, the apparatus having an adjustable drill support frame to drill downwardly. A transmission and drill bit depending from said drill support frame and a crowd bar adapted to move the drill bit under the foundation once the top of the drill bit is has passed the bottom of the foundation. By moving the drill bit under the foundation this permits a more vertical shaft providing better support for the foundation.

Abstract: A roof-drilling system for use in subterranean mining applications and the like in which the drill head of a roof drilling machine is arranged such that the receiving cavity of its chuck is configured having a lost motion association with the drive-in portion of starter and driver drill steel rods. The lower surface of a retainer fixed to the drill head and having a non-circular aperture formed therein serves to define one bearing surface for utilizing the drill head itself to pull the assemblage of drill steel from a completed bore. To remove the drill steel driver component from the drill head chuck, the miner grasps the lowermost portion and rotates it a relatively small amount, for example about 1/8 turn. To provide for interlocking of the various components of the drill steel, i.e.

Abstract: A mine roof bolter is described which has a rotary drill head with: (1) sufficient rotative mass that breakage of bits and steel is minimized, (2) a dual drive assembly that provides balanced side thrusts against the bearings so that wear thereof is minimized, (3) a sealing assembly that protects the lubricating oil from contamination by dust and mud under very adverse conditions, (4) circulatory lubricating devices that provide oil to the sealing assembly and drive assembly, and (5) a dust collecting assembly which is suitable for fast and simple cleaning. The mine roof bolter additionally has a lift arm which is constructed with three parallelograms providing useful spatial advantages and a panic bar assembly which enables an operator to stop all hydraulic and electrical systems from two sides of the machine.

Abstract: A support and positioner for a rock drill has an extendable and retractable feed boom pivoting about a pivotal support arranged laterally below the axis of the feed boom, so that when the boom is swung downwardly to maintain a desired line of advance of the drill, the boom rocks forwardly so as to increase axial drilling thrust and the extent of forward movement of the drill, and reduce the bending stresses imposed on the drill steel.

Abstract: A self-contained, portable, extensible boom assembly for detachable mounting on a vehicle such as on the open top box body of a truck has power driven boom actuating mechanism and downcrowding storage mechanism activated by said power driven mechanism for maintaining a downcrowding load on a driver tool suspended from the boom together with mechanism for controlling the extension of the boom to maintain a straight line alignment of the tool as it advances under the downcrowding load. The portable with mechanism for controlling the extension of the boom to maintain a straight line alignment of the tool as it advances under the downcrowding load. The portable self-contained assembly can carry its own power source such as a battery or can be driven through a power take-off from the engine of the truck on which it is mounted. The assembly is unitary, relatively light in weight, easily transported, and is easily mounted on and removed from a truck vehicle without altering the construction of the vehicle.

Abstract: A drill pot for rotating a drill steel is supported at the front end portion of a drill boom that extends forwardly from a self-propelled frame. The drill boom raises the drill pot in a straight line to advance the rotating drill steel into the mine roof and drill a bore hole for the installation of a roof bolt. A drill guide carriage is supported at the front end portion of a drill guide boom that also extends forwardly from the machine frame. The drill guide boom is positioned in overlying relation with the drill boom and is raised to move the drill guide carriage in vertical alignment with the drill pot. A pair of drill guide members is pivotally connected to the drill guide carriage for movement into a closed drill guide position surrounding the drill steel.

Abstract: A drill boom is connected at its rear end portion to a mobile body and supports at its front end portion a drill pot for rotating a drill steel. The drill boom raises the drill pot along a predetermined straight-line path to advance the rotating drill steel into the mine roof to form a bore hole for insertion of a roof bolt assembly. An operator's compartment is slidably mounted on the front end of the mobile body laterally of the drill boom. A hydraulic cylinder positioned on the mobile body raises the operator's compartment along a plane aligned with the plane of movement of the drill pot. A protective canopy overlies and is movable with the operator's compartment. A drill steel guide is secured to the canopy and includes movable guide portions that extend into surrounding relation with the drill steel. The drill steel guide is elevated with the canopy to a position adjacent the mine roof.

Abstract: A horizontal deck extends forwardly from a self-propelled body portion. An elevating mechanism pivotally connects the deck to the body portion for vertical movement of the deck into and out of position on the mine floor. A mast-type roof drilling unit is mounted on the front of the deck and includes a vertically movable drill pot for advancing a rotating drill rod into the mine roof for drilling a bore hole therein. The deck is positioned on the mine floor during the drilling operation. During tramming of the body portion the deck is raised to an elevated position above the mine floor. A roof support assembly is supported by telescoping devices above the deck to provide overhead protection for the machine operator during the drilling and tramming operations. During drilling the roof support assembly is raised to abut the mine roof and support the mine roof above the operator on the deck.

Abstract: A hydraulically driven post hole auger apparatus for attachment to implement lifting mechanism of a vehicle. The apparatus includes a cylindrical housing having a speed-reducing gear box therein. The gear box has an output shaft extending through an opening in an end wall of the housing and adapted to have the auger attached thereto. A hydraulic motor in the housing is operatively coupled to the gear box. A universal joint mechanism couples the housing to a support member. The support member may be one end of a boom having its other end pivotally connected to the rear end of a tractor. Linkage connects the boom to the power-actuated lifting levers at the rear of the tractor for selectively raising and lowering the boom and the auger apparatus. The support member alternatively may be a bracket assembly adapted to be removably clamped to an arm of front end loader apparatus, the arm being pivotally connected to a tractor.

Abstract: A drilling machine is disclosed for use in providing bolt holes in concrete stadium riser steps and the like. The drilling machine includes a relatively stationary base plate, and a foot plate slideable upon the base plate along a predetermined path. The foot plate carries drill mounting means for mounting a plurality of commercially available drills. An operating lever moves the foot plate, drill mounting device and drills toward and away from a vertical drilling face over the base plate.

Abstract: A mobile vehicle is disclosed having a boom pivotally mounted thereon for slewing about a vertical axis and a work head attached to the free end of the boom by a universal mounting. The universal mounting consists of a first housing having a base attached to the boom and a power driven worm in drive relation with a worm gear in the housing. The worm gear has a central hub to which is connected a second housing and which in turn has a driven worm in drive relation with a worm gear mounted therein. The worm gear in the second housing has a central hub and to which is attached a support carrying the work head.

Abstract: Disclosed is a digger attachment for a tractor including a frame having at one end of a frame arm a three-point mount for securing the digger to the tractor. The opposite end of the frame arm supports an auger for pivotal movement about a transverse axis. Attached to the head of the auger is a shaft which extends through a bracket mounted on the frame arm. Coil springs are provided about the shaft on opposite sides of the bracket with the opposite ends of the springs butting against nuts threaded on the shaft. To utilize the digger, the nuts on the opposite ends of the shaft are threaded such that the springs displace the shaft in a manner displacing the auger about its transverse pivotal axis such that its rotational axis is slightly rearwardly inclined relative to a vertical through the auger's pivot. That is, the nuts are respectively threaded and unthreaded to achieve the desired inclination of the auger with the spring forces acting on the shaft in balance.

Abstract: A known extendable and retractable mounting for rock drills is described comprising a drill feed leg, a vertical support, which may be mounted on a truck and a counter-balancing device for counterbalancing the drill during movement vertically from one drilling position to another. The new feature described consists in applying a turning moment to the vertical support by means of a spring, two springs or a fluid cylinder and piston arrangement. The turning moment counteracts a resultant force tending to move the feed leg sideways.

Abstract: According to the present invention, an articulated support arrangement for carrying a tool comprises a support member, a turret pivotally attached thereto, means to rotate the turret with respect to the support member, link means pivotally connected between one part of the turret and one part of a boom, at least one ram pivotally connected between another part of the turret and another part of the boom, means to rotate the link means about the pivotal connection thereof at the turret, the boom comprising a rear portion having a part capable of rotation about the longitudinal axis of the boom, means to effect such rotation, and a front portion attached at one end to that part and at the other end pivotally attachable to a tool or mounting thereof, with a ram pivotally attached at one end to the front portion of the boom and the other end being operable on the tool.

Abstract: A device for applying the drill tool displaceably carried by the feed beam of a vehicle supported drilling machine to a rock surface located at a distance from the feed beam. The drill tool is held in position during the collaring of the drill hole by a drill guide carried by a maneuverable arm mounted on the vehicle separately from the feed beam, and which drill guide is moved into engagement with the drill tool in close proximity to the rock surface. After the drill tool has penetrated into the rock surface a distance sufficient to be supported by the drill hole, the drill guide is released by a hydraulic device and withdrawn from the drill tool by the maneuverable arms.