JPS6025564Y2 - Swivel test equipment for top-swivel vehicles - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a turning test device for an upper swing type vehicle.

When testing the turning performance of a top-swing type vehicle such as a power shovel, the upper body is driven to swing relative to the traveling object, but in this way, the distance (turning radius) of the upper body from the center of rotation is large. Therefore, a large space is required, making indoor testing extremely difficult.

The present invention has been developed in view of the above circumstances, and has a structure in which a turn test device for an upper swing type vehicle A is provided with an upper vehicle body C rotatably provided on a lower traveling body B, and a turntable 3 is mounted on a fixed body 1. is rotatably provided, and the turntable 3
a lower fixing mechanism 4 for fixing the lower traveling body B to the fixed body 1, and an upper fixing mechanism 6 for fixing the upper vehicle body C to the fixed body 1;
17, and according to this configuration, the lower body traveling body B, which is fixed to the fixed body 1, can be rotated with the turntable relative to the upper body C, so that the upper body C can be turned without turning the upper body. Performance can be tested.

Embodiments of the present invention will be described below with reference to the drawings.

A turntable 3 is rotatably provided in the recess 2 of the floor 1, and the top surface 3a of the turntable is at the same height as the floor surface 1a. .

The jack 4 has a structure in which a main body 4a is fixed to the upper surface 3a of the turntable, and a pair of movable pieces 4b, 4b are extendably and retractably provided facing each other, and a weight 5 is provided on the lower surface 3b of the turntable.

Reference numeral 6 denotes a first upper fixing mechanism provided near the turntable 3, in which a main body 8 is movably provided with a cylinder 9 on a guide 7 fixed on the floor 1a, and a pair of horizontal clamp pieces are provided on both sides of the main body 8. Approaching 12.12 with cylinder 13.13,
In addition, a vertical clamp 14 is provided at the center of the upper part of the main body 8 so as to be movable up and down by cylinders 1 and 5.

16 is the hydra roller.

-17 is a second upper fixing mechanism provided opposite to the first upper fixing mechanism 6 around the turntable rotation center 3c; It has a structure in which a stopper 21 having a letter-shaped notch of 2° is fixed.

22 is a rotation sensor provided on the pivot shaft of the turntable 3, and 23 is a load sensor provided on the outer periphery of the turntable 3.

Next, the operation will be explained.

The upper swing type vehicle A has a structure in which an upper body C is provided on a lower body B so that the upper body C can rotate freely, and the lower body B has a pair of tracks.
The upper vehicle body C is equipped with a boom c1, an arm C', and a working machine attached to the packet C''.

The pair of clamp pieces 4b of the lower fixing mechanism 4 are moved while the vehicle A is self-propelled and stopped on the turntable 3.

The lower traveling body B is fixed to the turntable 3 by extending the lower traveling body B and pressing it against the inner surface of the pair of crawler tracks b of the lower traveling body B.

Next, the main body 8 of the first upper fixing mechanism 6 is moved to approach the upper vehicle body C, and the pair of lateral clamp pieces 12 and 12 clamp the upper vehicle body C from the lateral direction, and the vertical clamp pieces 14 are lowered. and press it against the upper vehicle body C to fix the upper vehicle body C to the floor 1.

When a turning operation is performed in this state to cause the lower traveling body B and the upper vehicle body C to rotate relative to each other, the lower traveling body B turns with the turntable 3 relative to the upper vehicle body C, so the rotation sensor 22
, the turning performance can be tested using the load sensor 23.

Further, the moment of inertia can be changed by increasing or decreasing the weight 5.

Note that when the first upper fixing mechanism 6 is not used, the packet C" of the working machine is attached to the stopper 2 of the second upper fixing mechanism 17.
By engaging with the notch 20 of 1, the upper vehicle body C can be fixed to the floor 1.

As described above, it has the following advantages.

■ The upper vehicle body C, which has a large turning radius, stops and the lower vehicle body B, which has a small turning radius, turns, so the turning radius becomes small and the turning performance can be easily tested even in a narrow indoor space.
When testing other performances simultaneously, the cable (wiring) can be connected directly to the measuring instrument on the floor, making operation easier.

In particular, when testing the performance of working equipment at the same time, many cables are required, so the operation is significantly simplified.

That is, when the upper vehicle body turns, a measuring instrument must be mounted directly on the upper vehicle body or wirelessly used, making the operation complicated and cumbersome and reducing reliability.

(2) Since the turntable 3 rotates together with the lower traveling body B, there is no need to rotate the turntable 3 using another power source during testing.

■ A pair of clamp pieces 4b, 4b of the jack 4 fixed to the turntable 3, which serves as the lower part fixing mechanism, are attached to the lower traveling body B.
Since the pair of crawler tracks B is pressed against the inner surface of
Since the upper vehicle body C is laterally clamped by a pair of lateral clamp pieces 12.12 provided in the upper vehicle body C,
It can be moved so that its center is the same as the turning center of the turntable 3, and the center of the upper swing vehicle A and the turning center of the turntable 3 can be made the same by the operation of both.

As a result, when the top-swivel vehicle A runs on the turntable 3 and stops, there is no need to operate the top-swivel vehicle A so that the center of the top-swivel vehicle A is the same as the turning center of the turntable 3. The operation of stopping the vehicle A from running becomes easy.

- By fixing the upper body C with the first upper fixing mechanism 6, the working machine can be operated freely and the performance of the working machine can be tested at the same time.

■ The moment of inertia can be changed by increasing or decreasing the weight 5.

(2) Same as (2), but since the upper vehicle body C is stationary, the operator's seat is stationary, and the operator is not required to turn, which reduces fatigue and facilitates test automation.

Since the present invention is configured as described above, it is possible to easily test the turning performance in a narrow indoor space, reduce operator fatigue, and furthermore, the test can be easily automated.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a sectional front view and FIG. 2 being a plan view. 1 is a fixed body (floor), 3 is a turntable, 4 is a lower fixing mechanism, 6 and 17 are upper fixing mechanisms, A is an upper rotating vehicle,
B is the lower traveling body, C is the upper vehicle body, and D is the work equipment.

Claims (1)

[Scope of utility model registration request] In a turning test device for an upper swing type vehicle A in which an upper vehicle body C is rotatably provided on a lower traveling body B, a turntable 3 is rotatably provided on a fixed body 1, and a lower traveling body B is fixed to the turntable 3. and an upper fixing mechanism 6,1 for fixing the upper vehicle body C to the fixed body 1.
7. A swing test device for an upper swing type vehicle, characterized in that a swing test device is provided with a swing test device for an upper swing type vehicle.