Abstract: A roof panel of a cab installed on a work vehicle includes a planar portion and a plurality of bent portions. The planar portion serves as the roof surface of the work vehicle cab. The bent portions are formed on the outer periphery of the planar portion. The bent portions are bent at a predetermined angle with respect to the planar portion toward an external side of the roof surface of the work vehicle cab.

Abstract: A wheel loader includes a rear frame having left and right plate-shaped main beams. A reinforcing bracket is provided at an upper position substantially in a middle of a front-and-rear direction of the rear frame, and the reinforcing bracket bridges between the main beams. A substantially middle position of the rear frame exhibits a closed-section structure that includes the reinforcing bracket. The closed-section structure at the main beams specifically includes an axle support, a reinforcing plate, a reinforcing rib and the reinforcing bracket in the order from a lower side to an upper side.

Abstract: A rear limiting mechanism (35) for limiting a moving range in a vertical direction, a front-rear direction and a lateral direction of the cab frame (24) is arranged immediately below a rear pillar (30) of the cab frame, between the vehicle body frame (21) and both right and left end portions of the higher portion of the cab frame (24). The rear limiting mechanism (35) includes a limitation member (36), limiting members (37, 38) and a limiting pin (40). Gaps (S1a, S1b) are provided between the limiting pin (40) and the limitation member (36), gaps (S2a, S2b) are provided between the limitation member (36), and the front limiting member (37) and the rear limiting member (38). Gaps (S3a, S3b) are provided between the limiting pin (40) and the limitation member (36). A movement of the cab frame (24) is limited within the ranges of the gaps.

Abstract: A cab frame (14) is supported on brackets (12, 13) provided at a plurality of positions of a vehicle body frame (11) with dampers (15). Movement limiting mechanisms (30) for limiting a movement at least in a vertical direction of the cab frame (14) are provided between the brackets (12, 13) and the cab frame (14). Further, the movement limiting mechanisms (30) are provided at least at two positions. Each movement limiting mechanism (30) includes a lower limiting portion (31) arranged close to the brackets (12, 13) and constituted by a plate member, and an upper limiting portion (32) arranged close to the cab frame (14) and constituted by a plate member in the same manner. The lower limiting portion (31) is integrally structured with the brackets (12, 13). Recesses (33, 34) are formed in a side edge of at least one of the lower limiting portion (31) and the upper limiting portion (32), and the limiting portion in the other limiting portion is positioned within the recesses (33, 34).

Abstract: A cab reinforcement structure for reinforcing a cab by a gusset disposed in a corner at which a right rear pillar and a hollow rear lateral beam member joined to the right rear pillar meet each other is formed such that a gusset retaining member for sustaining a load from a gusset side is disposed within the rear lateral beam member in relation to the rear lateral beam member side end of the gusset and the gusset retaining member is composed of a plate-like member for blocking up the inside of the rear lateral beam member at a position corresponding to the rear lateral beam member side end of the gusset.

Abstract: A rear end small revolving type hydraulic shovel (tight tail revolving hydraulic excavator) that can improve maintainability of an engine and secures a wide foot space of an operator's cab is provided. In order to achieve this, the engine (13) is arranged below an operator's seat (21). Additionally, a floor frame (30) supporting the operator's seat (21) defines a front partition wall (33b) and an upper partition wall (33a) of the engine. Further, the floor frame (30) is configured so as to be tilt-up. Furthermore, a piping (42) and a wiring (46) connected to an equipment (41) on the floor frame (30) side are arranged so as to pass through the vicinity of an axis line of a tilt-up supporting point.

Abstract: An air conditioning apparatus for a hydraulic shovel with which a wide space in a cab can be secured and a placement operation of ducts for distributing wind to each important point in the cab is facilitated. For this purpose, in the air conditioning apparatus, an air-conditioning unit (21) is placed at a front portion of a right side in a cab (10). The air-conditioning unit (21) is mounted to a front portion of a right side wall surface (51) of the cab (10). The air-conditioning unit (21) is mounted to the right side wall surface (51) of the cab (10) to be capable of being taken in and out from an inside and an outside of the cab (10).

Abstract: An air conditioning apparatus for a hydraulic shovel with which a wide space in a cab can be secured and a placement operation of ducts for distributing wind to each important point in the cab is facilitated. For this purpose, in the air conditioning apparatus, an air-conditioning unit (21) is placed at a front portion of a right side in a cab (10). The air-conditioning unit (21) is mounted to a front portion of a right side wall surface (51) of the cab (10). The air-conditioning unit (21) is mounted to the right side wall surface (51) of the cab (10) to be capable of being taken in and out from an inside and an outside of the cab (10).