JPS5926495B2 - Sliding door correction fastening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rear sliding door correction and fastening device for tightening a rear sliding door of a dump vehicle while automatically correcting its position.

If the rear sliding door of a dump vehicle's loading platform is supported without sufficient rigidity in a direction perpendicular to its opening/closing direction, conventional sliding door fastening devices cannot correct the position of the sliding door in that direction. Since there is no function for tying the parts together, if there is a misalignment between the fastening parts, there are inconveniences such as the tying becoming impossible or the tying being done with the parts deviated from each other.

The present invention has been made with the aim of solving these problems, and its gist is that the upper end of the rear sliding door 6 of a dump vehicle is provided with a loading platform 2 that is tiltably provided on an underframe 1 with a dump hinge 3. A latch is detachably and rotatably connected to the upper end of the side sliding door 4 provided in the rear sliding door 6, and has an inclined side 9 that engages with a shaft portion 11 and a hook 10 facing each side on both sides of the rear sliding door 6. 1
2, a hook 10 that is rotatable on a receiver 14 provided on the loading platform 2 and detachable on the shaft portion 11, and a connecting rod 15 connected to the hook 10 is pivoted on the loading platform 2. This device is characterized in that the lower end of the arm rod 17 is engaged with a guide piece 19 provided on the underframe 1 so as to be engaged with or detached from the guide piece 19 provided on the underframe 1. .

An embodiment of the present invention will be described below based on the drawings.

1 is the underframe of the dump vehicle, 2 is a loading platform attached to the underframe 1 via a dump hinge 3, 4 is a side fan door provided on both sides of the loading platform 20 via a hinge 5, and 6 is provided at the rear end of the loading platform 2. It is a rear fan door.

As shown in FIG. 1, the rear fan door 6 is attached to the rear upper ends of the both side fan doors 4 via removable hinges 8 with hinge pins 7 provided at the upper ends of both sides thereof, and the rear fan door 6 As shown in FIG. 2, a latch 12 is fixed to both sides or one side of the lower end of the hook 12, which shares the opposing inclined sides 9 and a locking shaft portion 11 that is slightly longer than the width of a hook 10, which will be described later.

On the other hand, at the rear end of the loading platform 2, a locking piece 13 that supports the locking shaft portion 11 on the loading platform 2 side is fixedly installed, and on the rear side, the locking shaft portion 11 is attached rearwardly and upwardly through a holder 14. A supporting hook 10 is rotatably provided.

The locking piece 13 has a diameter corresponding to the diameter of the locking shaft portion 11 and has a diameter of 120°.
A connecting rod 15 of an operating mechanism is rotatably connected to the inner end of the hook 10.

The operating mechanism includes the connecting rod 15 and the return spring 1 described above.
6. Consisting of an arm rod 17, a roller 18, and a guide piece 19, the return spring 16 is interposed between the support 14 and the connecting rod 15 to apply backward moving force to the connecting rod 15, and the front end of the connecting rod 15 is connected to the loading platform. A pin 21 is used to rotatably connect the upper end of an arm rod 17 that is rotatably provided on the side of the arm rod 17 with a shaft 20, and the roller 18 is rotatably attached to the lower end of the arm rod 17.
The guide piece 19 is fixed to the side of the underframe 1, and as the loading platform 2 changes from an inclined state to a non-inclined state, the rollers 18 come into contact with the guide piece 19 and then roll backward. It is something.

In the drawing, reference numeral 22 indicates a shaft on which the hook 10 is rotatably attached to the receiver 14, and reference numeral 23 indicates a shaft on which the inner end of the hook 10 is attached to the rear end of the connecting rod 15.

Since this embodiment is configured as described above, when the loading platform 2 is rolled backwards to be in an inclined state, the connecting rod 15 is given a backward moving force by the return spring 16, so that the □ arm rod 17 is Pulling the upper end backward, the rollers 18 are rolled forward on the guide piece 19, and when the roller 18 leaves the guide piece 19 as the loading platform 2 tilts upward, the arm rod 17 is free to rotate backwards, and the connecting rod 15 is allowed to move backward and rotates the hook 10 in the opening direction.

The lower end edge of the hook 10 is opened, and the rear fan door 6 opens around the hinge pin 7 to enable unloading, and the load loaded on the loading platform 2 falls to the ground.

Next, when the loading platform 2 is returned to a non-tilting state (almost horizontal state), the rollers 18 first come into contact with the guide piece 19 and roll backwards, rotating the arm rod 17 forward, and the return spring 1
6, the connecting rod 15 is moved forward, and the hook 10 is rotated in the closing direction.

At this time, the rear fan door 6 rotates around the hinge pin 7 and is in contact with the loading platform 2, so the tip of the hook 10 engages with the locking shaft 11, and the rear fan door 6 Fasten in the closed state.

When the rear fan door 6 is fastened as described above, since the side fan door 4 is pivotally connected to the loading platform 2 by the hinge 5, it bends to the side, and as a result of this bending, the rear fan door 6 bends as shown in FIG. As shown by the dotted chain line, the hook 10 may deviate to the side, but even in this case, when the hook 10 rotates in the closing direction as described above, the rear fan door 6 moves in the direction opposite to the direction in which it deviates. The corner of the hook 10 comes into contact with the inclined side 9 of the latch 12, rotates in the closing direction, and moves the latch 12 along the inclined side 9 in the opposite direction to the shift, thereby opening the rear fan door 6, which is the same unit. Hook 1 while correcting the misalignment
0 engages and fastens the locking shaft portion 11.

Therefore, even in such a case, it is possible to prevent the rear sliding door 6 from being unable to be fastened or from being fastened in a sloppy state.

Furthermore, since a locking piece 13 is provided at the rear end of the loading platform 2 to support the locking shaft 11 from the loading platform 2 side, the locking shaft 11 can be supported 360° in conjunction with the hook 10 that supports from the rear and above. Therefore, if you pull out the hinge pin 7 of the hinge 8,
The lower end of the rear fan door 6 can be opened easily.

At this time, the locking piece 13 must not have a shape that prevents the latch 12 from moving in the lateral direction.

As can be understood from the description of the above embodiments, according to the present invention, not only can the intended purpose be fully achieved, but also it is possible to open the lower end of the rear sliding door.

[Brief explanation of drawings]

FIG. 1 is a partial schematic side view showing an example in which the present invention is applied to a dump vehicle, and FIG. 2 is an enlarged view taken in the direction of arrow A of the same. 1 is the underframe, 2 is the loading platform, 4 is the side sliding door, 5 and 8 are the hinges,
6 is a rear fan door, 7 is a hinge pin, 9 is an inclined side, 10 is a hook, 11 is a locking shaft portion, 12 is a latch, 13 is a locking piece, 1
4 is a receiver, 15 is a connecting rod, 16 is a return spring,
17 is the arm rod, 18 is the roller, and 19 is the guide piece.

Claims (1)

[Claims] 1. The upper end of the rear sliding door of a dump vehicle, in which the loading platform is tiltably installed on the underframe with a dump hinge, is removably and rotatably connected to the upper ends of the side sliding doors provided on the loading platform, and the A latch is provided that has a shaft portion facing the direction and an inclined side that engages with the hook, a hook that can be rotated on a receiver provided on the loading platform and is detachable on the shaft portion, and a connecting rod connected to the hook is attached to the loading platform. A sliding door, which is connected to the upper end of an arm rod pivoted on the frame, and the lower end of the arm rod is engaged with a guide piece provided on the underframe so as to be engaged or disengaged according to the tilt movement of the loading platform. Corrective fastening device.