JPH01269683A - Ground working car - Google Patents

Abstract

PURPOSE:To make a working device larger and make the whole of a vehicle compact by supporting front and rear travelling wheels in the front and rear of the working device through front and rear supporting frames, and allowing the front supporting frames to be freely and vertically moved to relatively lift and lower the working device. CONSTITUTION:A working device 1 for scavenge, etc., is comprised of a driver's cab 2 located in the front, and a driving apparatus chamber 3 located in the rear, and front and rear travelling wheels 19, 19 are supported so as to be protruded from the working device in the front and rear of the working device 1 through front and rear supporting frames 10, 10. Each front and rear supporting frame 10,10 are then supported so that they may be freely and vertically moved relative to the working device 1, and are adapted to relatively lift and lower the working device 1 by the operation of lifting-lowering devices including hydraulic cylinders 25 located in the supporting frames 10. Further, a driving-braking device 30 and a steering device 40 are attached to each front and rear travelling wheels 19, 19. The driving braking device 30 consists of a propeller shaft 33 connected to a hydraulic motor, a disc brake located in the middle of the propeller shaft, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is applicable to road cleaning vehicles, stabilizers, etc.
This relates to ground work vehicles such as the Sunalto Katsuta.

(Prior Art) To explain a conventional example of a cleaning work vehicle, it has front and rear running wheels and is equipped with a drive/brake device, a steering device, a drive source, etc.1. A working device for cleaning is installed on the car body so that it can be moved up and down using a vehicle frame, etc., and a lifting device dedicated to the working device is provided. The cleaning work is performed by setting the pusher on the finger surface, and the working device is raised and stored in the vehicle body.

(H, title to be solved by the invention) Conventional ground work vehicles, like the above-mentioned cleaning work vehicles, are equipped with a drive source, a drive/braking device, a steering device, etc. on the vehicle body, and a work device is mounted on the vehicle body. It is necessary to equip the vehicle with a vehicle frame and a dedicated lifting device, etc., and as the mechanism becomes more complex, the work equipment becomes relatively smaller due to constraints such as space for installation on the vehicle body and layout. There are problems such as the large size and the large oscillation caused by the influence from the ground, making it difficult to set the working equipment on the ground and causing low working efficiency and efficiency.

The present invention was developed to address the above-mentioned problems, and its purpose is to significantly simplify the mechanism, make it possible to reduce the number of computers, and increase the size of the working device. The object of the present invention is to provide a ground work vehicle that has improved ground work performance and efficiency by improving the ground setting performance and vehicle handling performance of work equipment.

(Means for Solving the Problem) The present invention provides front and rear running wheels protruding through front and rear support frames in front and rear of the working device, and reduces the distance between the front support frame and the working device. The front support frame is arranged to be movable up and down, and a lifting device is attached to the front support frame to relatively raise and lower the working device, set it on the ground, and switch to lifting support;
It is characterized by a configuration in which at least one of the front and rear running wheels is equipped with a trap drive/braking device and a steering device, and a running mechanism is provided protrudingly in front and behind the working device, and the running mechanism is equipped with a lifting device, a drive/braking device, and a steering device. By adding a braking device and a steering device, the work equipment becomes larger as a vehicle body, making the vehicle simpler and more compact, and the performance of setting the work equipment on the ground and maneuvering performance is improved.

(Function) Before, after, and before the working equipment. Front through rear support frame,
Protruding installation of rear running wheels - 5 At least the front support frame is arranged to be movable up and down with respect to the working device, a lifting device is attached to at least the front support frame, and at least one of the front and rear running wheels is provided with a driving/lowering device. A braking device and a steering device are attached, the working device is enlarged as the vehicle body, and the vehicle is made more compact.At the same time, the front running wheels are raised by raising at least the front support frame by the lifting device, and the working device is directly moved. It can be relatively lowered and set on the ground easily, and the driving/braking device and steering device allow for smooth running and maneuvering, allowing ground work to be carried out efficiently.

(Embodiment) An embodiment of the present invention is shown in FIGS. 1 to 9, and (
1) is a work device for cleaning etc., (2) is a work device (1)
(3) is a drive machine room provided at the rear of the working device (1), and (3) is a driving machine room provided at the rear of the working device (1). The front and rear running wheels a9α9 are protruded through i, and at least the front support frame 11 is arranged so as to be vertically movable relative to the working device (1), so that the working device (1) is relative to the front supporting frame αQ. Lifting and lowering I
- [Set on the ground and cut to support the rise! ′! Replaceable elevator @
In addition to installing C2 (g), the front and rear running wheels a9α
A ground work vehicle equipped with a drive/brake device (to) and a steering device (4rJ) is installed on at least one of the 9 and 9.

In the illustrated embodiment, the front and rear support frames al (11,
The front and rear running wheels (19a'l have the same configuration and L/, and the front and rear sides are provided with a lifting device (2), a drive/braking device, and a steering device (40), respectively.

The front and rear support frames α1)Ql are 1.2 and 4.5
As shown in the figure, the fixed bracket αB provided at the front and rear lower parts of the working device (1) and the fixed bracket αV are connected to pins (l).
A pair of 7 frames αJαJ protruding from z and a frame α
Between Ja3 (C connected cross member α4, placket α
As shown in Figure 2.3.4.6, there is a pin (1) in the center of the bracket α9α fixed on the tip side.
At 5a), pivot the bracket αe on the axle box (17) side,
Attach the front and rear running wheels (tires) α9α9 to the left and right end sides of the axle box (17), and install the hydraulic cylinder plane (c) of the lifting device ■ connected between the fixed bracket αυ and the frame α3) (13). Before.

Raise and lower the front and rear running wheels Q!3 (19) by raising and lowering the front end of the rear support frame (11Ql), then raise and lower the working device (1) relatively by its own weight, set it on the ground, and set it on the ground for lifting support. It has a switchable structure, with front and rear support frames α
The axle box αη is attached to the tip of the 1G in a center-pivot manner, and the left and right running wheels al are vertically mounted as shown in Figure 6.
9) to ψ'), making it easy to overcome unevenness on the ground side.

As shown in Fig. 1.2.4, the elevating device (2) includes a fixed bracket αV and front and rear support frames Ql (1111
A pair of hydraulic cylinders (c) □ which are pivotally connected with a pin @ between brackets Q1) CI) of the frame α3α3 of
□□, and as shown in Fig. 7, each of the front and rear hydraulic cylinder planes is connected to a hydraulic pressure generating device (3) installed in the drive machine room (3).
A circuit-controlled pulp (3e) connected to a hydraulic unit consisting of a tank (3b), a safety valve (3C), etc., and operated by a control lever (2c) (2c') installed in the operator's cab (2). It is expanded and contracted by a hydraulic circuit equipped with
Each hydraulic cylinder (to) is controlled by switching the circuit control pulp (3G) using the control levers (2e) (2c').
The front is telescopic.

The rear support frame αIQI is lowered around the pin α2, and the front and rear running wheels a3 are at the raised position shown in Figure 1 (
19') and the lowered position (19), the working device (1) is relatively raised and lowered by its own weight, and set on the ground or raised and supported.

As shown in Fig. 2.4.5, the drive/brake device includes a hydraulic motor Gυ, a reducer C32, and a reducer mounted on the cross member α of the front and rear support frames α. c32
Proiler shaft (to), differential shaft (to) connected to
b), the brake attached to the differential shaft (b) (35
a), each cylinder connected via a hydraulic butt (35b), a brake (35a), and a differential gear (7), and a rear running wheel (1).
As shown in Fig. 8, each of the front and rear hydraulic motors Gυ is connected to a hydraulic generator (3a) and a tank (3b) installed in the drive machine room (3).
, is connected to a hydraulic unit consisting of a safety valve (3c), etc.
A circuit control valve operated by a hydraulic circuit equipped with a circuit control valve (3f), etc., which is operated by a forward/reverse switching lever (2a) provided in the driver's cab (2), and operated by a forward/reverse switching lever (2&). (3f) drives the hydraulic motor C31) with high pressure hydraulic oil discharged from the hydraulic pressure generator (3a),
Each front and rear running wheel (19) rotates and travels through the reducer C33, proiler shaft (G), differential shaft (B), differential gear (to), axle shaft C37), etc., and the driver's cab (2) ) by operating the brake pedal (2d) installed on the brake cylinder (3g).
' (35b) and brake with the brake key (35a).

The above-mentioned steering device [(The difference is that, as shown in Figure 2+4+6, there are a pair of knuckle arms (4υG411 and
(Tie rod $G12 pivotally connected between 4B,
It consists of a steering cylinder G49 (acting as a booster) which is pivotally connected between the central part of the axle box an (platon) (43) and the central part of one of the knuckle arms (41), as shown in Fig. 9. so that each steering cylinder (45
i is a hydraulic generator (3a) installed in the drive machine room (3);
A control unit (3) is connected to a hydraulic unit consisting of a tank (3b), a safety valve (3C), etc., and is operated by a steering cylinder (2b) installed in the driver's cab (2).
h) is telescopically operated by a hydraulic circuit interposed in the steering cylinder (2b), and the control unit (3h) is operated by the steering cylinder (2b). The wheels are extended and contracted to turn and steer each running wheel (l!lI left and right).

As shown in Figure 4, 5 shows the front and rear support frames (1 (1 (1
(Platform 7 installed protrudingly on the lower side of 1) 5] Pivot the stopper bracket to J 1-1 Lock the tip claw part (52a) of the stopper 62 to the platen (53) on the working device (1) side It is removably attached to the hole, and when each running wheel (L9) is in the downward direction ftQq, the working device (1) is fixed to the upward support, improving running safety during forwarding.

The embodiment of the present invention has the above-mentioned structure, and its functions will be explained as follows: 1. ．． 4. As shown in Figure 7, when the circuit control valve (3θ) is operated by the control lever (2c') K by the operator in the driver's cab (2), hydraulic pressure is generated at 5 as shown in Figure 7. High-pressure hydraulic oil discharged from the device (3a) is supplied to each hydraulic cylinder (c) through a hydraulic circuit, causing it to expand and contract.

The rear support frame α (IQI is moved up and down and each front and rear running wheel (1!J) can be raised and lowered within the range of (19') to (19'') shown in Figure 1. When the front and rear running wheels Q9 are placed in the raised position (19'), the working device (1)
is relatively lowered by its own weight, and the lower part is set on the ground, and the drive/brake device rotates each front and rear running wheel 0 to drive the vehicle, and the steering device (41) allows the vehicle to be steered. For example, when the work device (1) is a cleaning device, a claw for taking in empty cans on the ground, an intake port, etc. (not shown) are provided at the front lower part of the work device, and when moving forward, the work device ft. , (The front side of 11 is set on the ground and moves forward to automatically collect and store empty cans, etc. on the ground from the intake opening into the working device (1) with the intake claw, and also allows free running, braking and Cleans the ground with high efficiency by steering.

During the above-mentioned cleaning work, by raising and lowering the height of each front and rear travel @Kan as needed in response to softness, unevenness, etc. on the ground,
The setting position of work equipment #(1) on the ground can be freely adjusted, and the front and rear support frames (11 (1) (i) have an axle box (1B attached to the center pivot 2) , as shown in Figure 6, in front of each other depending on the unevenness of the ground, etc.
The rear running wheel (1!J) easily overcomes the slope (β'), unevenness, etc., and the tilting of the working device (1) is significantly reduced, resulting in smooth running movement.

When the work is completed, move each front and rear wheel housing 9 to the lowered position (
19) The working device (1) is supported relatively upwardly, allowing high-speed forwarding movement.

The running drive and braking of the ground work vehicle are controlled by the hydraulic pressure generator ( The high-pressure hydraulic oil discharged from 3a) is supplied to the front and rear hydraulic motors Gυ0υ to operate them, and the hydraulic pressure G11C3υ drives the reducer, propeller shaft (c), differential shaft (b), differential gear, The front and rear running wheels 0 are rotationally driven through the axle C3η to drive the vehicle, and when the brake pedal (2d) is depressed, the brake cylinder (3g) is activated.

The brake (35a) is actuated via the hydraulic pressure (35b) and can be braked at any time, allowing free and smooth running. Furthermore, forward, reverse, and speed control are also possible using conventional technology.

Steering is done using the steering wheel (2
For example, when the steering handle (sha) is rotated in the direction of the arrow as shown in Fig. 9, the hydraulic pressure generator (3a) is
) The high-pressure hydraulic fluid discharged from the front and rear steering cylinders (c) (extend 451, knuckle arm 0υ, tie lock) passes through the hydraulic circuit as shown by the arrow and connects the front and rear steering cylinders (c) to the front and rear steering cylinders (43). Wheel 0 turns as shown by the arrow and is operated with an extremely small turning radius, making left and right turns easy and quick.

Front, rear, and rear support frames 01Q of work equipment (1)
The front and rear running wheel housings 9 are suddenly installed through the front and rear support frames Ql, the front and rear running wheels α9 are equipped with a lifting device ■, a driving/braking device and a steering device (40). Since the work equipment # (1) itself is the main body of the vehicle, the work equipment (11) is significantly larger and the work function is significantly improved, and the vehicle is also significantly more compact and has front and rear support. Frame (10) Above and below Ql, that is, in front.

The working device (1) is directly moved by raising and lowering the rear running wheel H.
In addition to being relatively set on the ground or elevated and supported, the work equipment (1) can be easily set on the ground, and the lifting/lowering operation performance by the lifting device (■), driving/braking device (q)
Coupled with the driving, control performance, and steering performance of the steering system (41), ground work performance and work efficiency are significantly improved.

The work equipment (1) can be set on the ground by providing an elevating device (2) at least on the front support frame aQ side. The purpose can be achieved by providing it on either one of the side running wheels α9.

(Effect of the invention) The present invention has the above-mentioned configuration, and the front of the working device,
Front after back, front through the rear support frame.

A rear running wheel is provided protrudingly, and at least a front support frame is attached. By installing the drive/braking device and steering device on both sides, it is possible to increase the size of the work equipment and make the vehicle more compact, improving the ability to set the work equipment on the ground and improving running and maneuvering performance. This greatly improves ground work performance and efficiency.

Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to these five embodiments, and the design of the seed cage may be modified within the scope of the spirit of the present invention. It is something that can be done.

[Brief explanation of the drawing]

FIG. 1 is a side view showing one embodiment of the present invention, and FIG. 2 is a side view showing one embodiment of the present invention.
Figure 3 is a sectional view of the ■-■ section in Figure 2, Figure 4 is an enlarged sectional view of the IV- and R' portions in Figure 2, and Figure 5 is a plan view of Figure 4. , Fig. 6 is a right side view of Fig. 5, Fig. 7 is a hydraulic circuit diagram for driving the lifting device, Fig. 8 is a hydraulic circuit diagram for driving the drive/braking device 1, and Fig. 9 is a hydraulic circuit diagram for driving the steering device. FIG.

Claims (1)

[Claims] In front of the work equipment, in front after, in front through the rear support frame,
A lifting device in which a rear running wheel is provided protrudingly, at least a front support frame is arranged to be movable up and down with respect to a working device, and the working device is raised and lowered relative to the front support frame, set on the ground, and switched to elevated support. What is claimed is: 1. A ground work vehicle characterized by being equipped with a drive/braking device and a steering device on at least one of the front and rear running wheels.