JPS6025565Y2 - 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, a vehicle placement position detector 33 is provided at a predetermined position of the turntable 3, and an indicator 34 is provided that operates based on a detection signal from the placement position detector 33;
Further, an auxiliary rotation mechanism including a motor 27 for rotationally driving the return table is provided between the turntable 3 and the fixed body 1 so that the upper vehicle body C can be connected to the fixed body 1.
Since the lower traveling body B can be fixed to the upper vehicle body C together with the turntable, the turning performance can be tested without rotating the upper vehicle body, and the mounting position detector 3
3, the vehicle placement position can be detected and the vehicle placed correctly on the turntable 3, and the turntable 3 can be rotated with the auxiliary rotation mechanism in contact to correctly align the placement position detector 33 with the direction of vehicle entry. , vehicles can enter from the same position.

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 via a support shaft 3a, the top surface 3b of the turntable is at the same height as the floor surface 1a, and a jack 4 serving as a lower fixing mechanism is fixed. It is set up.

The jack 4 has a structure in which a pair of movable pieces 4b, 4b are telescopically provided opposite to each other on a pair of main bodies 4a fixed to the upper surface 3b of the turntable.
A weight 5 is provided at c.

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,
It has a structure in which 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 a cylinder 15.

16 is a guide roller. 17 is the first upper fixing mechanism 6
A second upper fixing mechanism is installed at the opposite position with respect to the turntable rotation center 3d, and the carriage 1 is installed in the recess 18 of the floor 1.
9 is provided so as to be freely movable, and a stopper 21 having a V-shaped notch 20 is fixed to the trolley 19.

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

A roller 24 is provided on the outer peripheral side of the lower surface 3c of the turntable 3.
The rollers 24 are supported in sliding contact with an annular rail 25 so that the turntable 3 rotates smoothly.

A large-diameter gear 26 is rotatably provided on the support shaft 3a, and a gear 28 provided on an output shaft 27a of a motor 27 meshes with the large-diameter gear 26. bottle holes 29 are bored opposite each other in the diametrical direction,
A pin 31 pivotally attached to one end of a pair of swing levers a6 supported on the turntable 3 so as to be vertically swingable is fitted into each pin hole 29, and the other end of each swing lever 30 is fitted into each pin hole 29. There is a vertical member 32 provided on the turntable 3 so as to be able to move vertically.
When the upper and lower members 32 are pivoted and protrude upward from the upper surface 3b of the turntable, the pin 31 fits into the bottle hole 29, and when pushed down, the pin 31 is pulled out from the bottle hole 29. be.

On the top surface of the turntable 3b, there is a placement position detector 33 that comes into contact with the vehicle and issues a signal when the vehicle enters a predetermined position.
is provided facing upward, and when the mounting position detector 33 issues a signal, a signal light 34 is provided at the upper position connecting the turntable center 3d on the floor 1 and the mounting position detector 33.
The pair of upper and lower members 32.32 are located on both sides of the straight line A, and the distance between them is approximately equal to the distance between the pair of crawler tracks described later. It's a big deal.

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.
b, and the upper body C is provided with a working machine consisting of a boom C, an arm CF, and a packet C//.

When the vehicle A is not placed on the turntable 3, the pin 31 is moved to the large diameter gear 26 by its own weight or a spring.
Since the upper and lower members 32 are fitted into the bottle holes 27 and project upwardly from the upper surface 3b of the turntable, the large diameter gear 26 and the turntable 3 are in a connected state.

When the motor 27 is driven in this state, the large-diameter gear 26 and the turntable 3' rotate together, making it possible to align the straight line A with the vehicle entry direction opening.

Next, the vehicle A is driven from the direction of the arrow and enters onto the turntable 3.

When it comes into contact with the placement position detector 33, the signal light 34 lights up and it can be sensed that the device has been placed in a predetermined position, so that it can be correctly placed in the predetermined position.

On the other hand, since the pair of crawler tracks step on the upper and lower members 32 and push them down, the swing lever 30 rotates and the pin 31 moves into the bottle hole 2.
9, so the turntable 3 and large diameter gear 26 are discontinuous.

- Then, the pair of clamp pieces 4b, 4b of the lower fixing mechanism 4 are extended and pressed against the inner surfaces of the pair of crawler tracks b of the lower traveling body B to fix the lower traveling body B to the turntable 3.

Next, the main body 8 of the first upper fixing mechanism 6 is moved to approach the upper body C, and the two pairs of lateral clamp pieces 12 and 12 clamp the upper 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 respect to the upper vehicle body C together with the turntable 3, so that the rotation sensor 2
, 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.

□If the first upper fixing mechanism 6 is not used, the work equipment's packet C"
By engaging with the notch 20 of the stopper 21 of the upper fixing mechanism 17, 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 at the same time, the cable (wiring) can be directly connected to the measuring instrument on the floor, simplifying its operation.

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 car body C is clamped from the side by a pair of lateral clamp pieces 12.12 provided in the upper car body C, the upper car body C can be moved so that its center is the same as the turning center of the turntable 3, and the movement of both can be controlled. Upper swivel vehicle A
The center of the turntable 3 can be made the same as the center of rotation of the turntable 3.

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 vehicle body C with the first upper fixing mechanism 6, the work implement can be operated freely and the performance of the work implement 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 cockpit is stationary, and the operator is not required to turn, which reduces fatigue and facilitates test automation.

(2) Since it is possible to detect whether the vehicle is placed in a predetermined position using the placement position detector 33 and the signal light 34, it is possible to correctly place the vehicle in the predetermined position.

(2) Since the turntable 3 can be rotated by the motor 27, the position detector 33 can be correctly aligned with the entrance direction of the vehicle, and the vehicles can be sequentially driven from the same position and placed on the turntable 3.

- The large-diameter gear 29 and the turntable 3 are always connected and automatically become discontinuous when the vehicle is placed on the turntable 3, so there is no need for any operation.

Note that the first and second upper fixing mechanisms 6 and 17 may be provided with only one of them, or a clutch may be provided between the motor 27 and the small diameter gear 28, and the large diameter gear 26 may be fixed to the turntable 3. The configuration may be such that the clutch is controlled to be engaged or disengaged.

That is, an auxiliary rotation mechanism including a motor 27 for rotating the turntable may be provided between the fixed body and the turntable 3 so as to be able to connect and disconnect.

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.

Moreover, the vehicle can be placed correctly on the turntable 3, and the vehicle can be placed while traveling from the same direction of approach.

[Brief explanation of the drawing]

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, 33 is a mounting position detector, 34 is a display, A is an upper rotating vehicle, and B is a lower part. The traveling body, C is the upper vehicle body, and D is the working machine.

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. an upper fixing mechanism 6 for fixing the upper vehicle body C to the fixed body 1;
17, a vehicle placement position detector 33 is provided at a predetermined position of the turntable 3, and an indicator 34 is provided that operates based on a detection signal from the placement position detector 33;
A turning test device for an upper swing type vehicle, further comprising an auxiliary rotation mechanism including a motor 27 for rotationally driving a return table, which is connected and disconnected between the turntable 3 and the fixed body 1.