JPS6366095A - Drum breaking type service car - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention comprises a front vehicle body provided with an arm having a moving tool at its tip that can swing vertically, and a rear vehicle body provided with an engine.
The present invention relates to a folding-body work vehicle that is connected to be relatively swingable about a vertical axis and is provided with a drive device that relatively swings the two vehicle bodies.

[Conventional technology]

Conventionally, in the above-mentioned work vehicle, the overall balance has been maintained using the respective gravity forces of both vehicle bodies.

[Problem that the invention seeks to solve]

Therefore, even if a load is placed on the transport tool and the two vehicle bodies are operated relative to each other, the arm must be made short so that the entire working force does not roll. .

An object of the present invention is to make the arm long.

[Means for solving problems]

The characteristic configuration of the folding body type working vehicle of the present invention is that a balance weight that can be freely displaced in the left and right direction is provided on the rear vehicle body, and a steering detecting means for detecting the relative rocking direction of both vehicle bodies is provided, and the steering detecting means A moving operation means is provided for automatically displacing the balance weight in a direction opposite to the direction of rocking of the front vehicle body relative to the rear vehicle body, based on information from the rear vehicle body. It is as follows.

[For production]

In other words, as the two vehicle bodies are relatively swung, the balance weight is automatically displaced by the steering detection means and the movement operation means in a direction opposite to the direction in which the front vehicle body swings relative to the rear vehicle body. The load placed on the fat removal tool and the balance weight are located in opposite directions with the rear car body as the center, making it easier to maintain overall balance. This makes it easier to avoid falling.

〔Effect of the invention〕

Therefore, it is now possible to lengthen the arm and increase the lifting height of the load when the arm is raised, while safely transporting the load without overturning it.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

As shown in Figure 2, the left and right front wheels (1) are rotatable.
, (1), an arm (2) that can be operated to swing vertically relative to the vehicle body using a hydraulic cylinder (2a), and a pallet fork (3) that can be operated vertically and swingably relative to the arm using a hydraulic cylinder (3a). Front loader device (4
) is provided with a front body (10), which is equipped with rotatable left and right rear wheels (5), (5), and an engine (7) mounted below the driver's seat (6). A transmission case (8) is connected to the front of the engine (7), a rear body (11) equipped with a radiator (9) is provided at the rear of the engine (7), and the front body (10) and The rear body (11) is connected to the rear body (11) so as to be relatively swingable around the vertical axis (X) and relatively rotatable around the front and rear axis (Y). A hydraulic cylinder (15) for swinging operation is installed between both vehicle bodies, and a steering valve (15) for telescopically operating the hydraulic cylinder (15) is provided.
A steering handle (17) for rotating the transmission case (16) is provided on the rear vehicle body (11), and
), the driving force of the engine (7) is applied to the front wheels (1).
and a transmission shaft (L2) that transmits power to the rear wheels (5), respectively.
(13), which constitutes a foldable-body type wheel loader that lifts, lowers, and transports loads.

As shown in Fig. 1, a balance weight (18) that moves in the left and right direction is connected to the rear body (11) in conjunction with the expansion and contraction of a slide cylinder (14) attached to the rear body (11).
When the steering handle (17) is rotated, the balance is slidably attached to the rear vehicle body (11) in a direction opposite to the rocking direction of the front vehicle body (10). Slide cylinder (14) on steering valve (16) to automatically displace weight (18)
are connected to the oil passage, and while loading the load on the bullet fork (3) at the end of the arm (2), both the front and rear vehicle bodies (10), (
11) is constructed so that even when the vehicle body is subjected to a relative rocking operation, the gravity balance of the entire vehicle body is stable and it is difficult to overturn.

Note that the slide cylinder (14) is a hydraulic cylinder (
15), and when the steering handle (17) is rotated, the slide cylinder (14) expands and contracts as the steering valve (16) rotates, moving the balance weight (18) to either the left or right side. The hydraulic cylinder (15) is configured so that the expansion and contraction of the hydraulic cylinder (15) is completed after the entire gravity balance is stabilized by moving the hydraulic cylinder (15) in this direction.

[Another example]

The balance weight (18) is moved to the slide cylinder (1
In addition to moving left and right in step 4), other operating devices such as motors may be used for moving, and these are collectively referred to as moving operating means.

In addition, with the operation of the steering handle (17),
In place of the steering valve (16) that expands and contracts the slide cylinder (14), the relative rocking direction of both vehicle bodies (10) and (11) accompanying the operation of the steering handle (17) is electrically detected to perform the movement operation. A detector may be provided that provides a signal to drive the means, and these are collectively referred to as steering detection means.

Pallet fork (3) provided at the tip of the arm (2)
Alternatively, a bucket may be used, and these are collectively referred to as a transportation device.

[Brief explanation of drawings]

The drawings show an embodiment of a foldable working vehicle according to the present invention, and FIG. 1 is a schematic plan view showing an operating structure for the working vehicle in a folded-body state, and FIG. 2 is an overall side view of the wheel loader. (2)...Arm, (3)...Carrier, (7)...Engine, (10)...
・Front body, (11)... Rear body, (14)
...Movement operation means, (15) ... Drive device, (16) ... Steering detection means, (18)
...Balance weight, (X) ...Vertical axis center.

Claims (1)

[Claims] The front body (10), which has an arm (2) with a carrying tool (3) at its tip that can swing up and down, and the rear body (11), which has an engine (7), are connected to the vertical axis (X ), and the two vehicle bodies (10) and (11)
This is a folding-body work vehicle equipped with a drive device (15) for relative rocking operation of the rear vehicle body (11), and a balance weight (18) displaceable in the left-right direction is provided on the rear vehicle body (11). 10), a steering detection means (16) for detecting the relative rocking direction of (11) is provided, and the steering detection means (16) is provided.
movement operation means (14) for automatically displacing the balance weight (18) in a direction opposite to the rocking direction of the front vehicle body (10) relative to the rear vehicle body (11) based on information from the rear vehicle body (11); ) is a folding-body type work vehicle.