Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door stopper 12 and an opened door stopper 11. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 comprises a bumper 6a, which is provided at the rear end of the door 2, and a rocker 6b, which is connected pivotally to the bumper 6a so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, and a slide rail 5. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door lock 7, an opened door lock 9 and a handle 13. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1. The closed door lock 7, which is provided at the front end of the door 2, engages with a closed door striker 8, which is provided on the cab box 1, when the door 2 is closed.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door lock 7, an opened door lock 9 and a handle 13. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1. The closed door lock 7, which is provided at the front end of the door 2, engages with a closed door striker 8, which is provided on the cab box 1, when the door 2 is closed.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, and a slide rail 5. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 is connected pivotally to the rear end of the door 2 and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: An operator cab 53, which is mounted rotatable on the vehicle body 51 of a hydraulic mini-shovel 50, comprises a cab box 1, a door 2, upper and lower link members 3 and 4, a slide member 6, a closed door stopper 12 and an opened door stopper 11. The cab box 1 has an internal cab room 1a and an entrance 15, which leads into the cab room 1a. The door 2 closes and opens the entrance 15 when it is moved forward and rearward, respectively. The upper and lower link members 3 and 4 have fixed ends 3a and 4a, each of which is connected pivotally to the cab box 1, and moving ends 3b and 4b, each of which is connected pivotally to the front end of the door 2. The slide member 6 comprises a bumper 6a, which is provided at the rear end of the door 2, and a rocker 6b, which is connected pivotally to the bumper 6a so as to swing freely and slides along a slide rail 5, which is provided externally on the cab box 1.

Abstract: A door opening of an operator cab for a construction machine is enlarged so that protrusion of the door beyond a turning radius can be avoided when the door is fully opened and so that the operator cab can have a wide indoor space. Therefore, a side wall (2a) of the operator cab (2) at an opposite side to a boom of a working-machine installed on a swivel base (1) is formed to have an outer convex surface, including the door; rails (4, 5 and 6) are provided on the side wall (2a) of the operator cab (2); the door (3) is provided with rollers (7, 8 and 9) which are always engaged with the rails to slide the door for easy opening and closing operation, and the position of the door (3) when the door is locked fully open is set to be within a range of turning radius (R) of the swivel base (1) along the outer surface of side wall (2a) of the operator cab (2).

Abstract: The present invention provides a spacious operation cabin of a construction machine which has a large opening for a door, and which prevents the door from jutting out of the turning radius of the cabin when the door is opened. The outer side (2a) of the operation cabin (2) opposite to a working equipment boom installed on a turntable (1) is formed into an outwardly curved arc including the door (3), and the door (3) is adapted to be freely slidable with rails and rollers which are appropriately positioned. The position of the door (3) when it is opened is controlled to be within the turning radius (R) of the turntable.

Abstract: A suspension assembly for suspending a vehicle body between track frames located at both sides of the vehicle body comprises a pair of movable links each having one end pivotally connected to each of pivot shafts horizontally extending outwards from both sides of the vehicle body and the other end pivotally connected to a rear or intermediate portion of the track frame and an equalizer bar. Each end of the equalizer bar is provided with a spherical bearing into which a pivot shaft connected to the track frame on the slightly front side from the intermediate portion thereof is slidably inserted. The suspension assembly further comprises shock absorber means pivotally connected between both side of the rear part of the vehicle body and the respective rear parts of the track frames.

Abstract: A coupling arrangement for rotating shafts using a leaf spring as a coupler. The arrangement includes a first and a second shaft disposed in alignment with each other. The first shaft has formed therein at one end face thereof a slit extending at right angles with the axis thereof and the second shaft has formed thereon at one end face thereof a tongue which is adapted to be inserted into the slit when mounted in place. The leaf spring is inserted into the slit for clamping the tongue against rotation.