JP2535092B2 - Carrier - Google Patents

Description

Description: [Industrial field of application] The present invention relates to a transport vehicle having an all-terrain traveling device.

[Conventional technology]

In the above-mentioned transport vehicle, conventionally, the engine and the operating unit are arranged side by side in the lateral direction of the machine body, and the engine and the operating unit and the carrier are arranged side by side in the longitudinal direction of the machine body.

[Problems to be Solved by the Invention]

Conventionally, the engine is located so as to project to the front or rear of the machine from the traveling device in a side view of the machine, and due to this, the mission for traveling is also located, especially in the case of a small transport vehicle, the cargo bed is empty. The weight balance between the front and rear of the aircraft tended to be poor, and the stability when the aircraft leaned back and forth tended to be particularly poor.

The object of the present invention is to prevent an increase in overall length and height,
An object of the present invention is to provide a transport vehicle that can maintain a good weight balance between the front and rear of the vehicle when the vehicle is loaded and unloaded.

[Means for solving the problem]

In the carrier according to the present invention, in order to achieve the purpose,
A traveling machine having a pair of left and right rough terrain traveling devices is provided with an operating unit and a loading platform in parallel in the longitudinal direction of the fuselage, and the engine is moved closer to the loading platform side from the input shaft of the rough terrain traveling device to run left and right. With the arrangement between the devices, the traveling mission for transmitting the output of the engine to the rough terrain traveling device is juxtaposed in the longitudinal direction of the engine with the engine in a tilted posture toward the engine side toward the upper end side in the side view of the vehicle body, A recess into which the upper portion of the engine is inserted is provided at an end of the cargo bed on the side of the operation unit. The action and effect are as follows.

[Work]

According to the arrangement configuration of the engine, the traveling mission and the luggage carrier, the center of gravity of each of the engine, the traveling mission and the luggage carrier is located in the grounding range of the traveling device in a side view of the aircraft or at a position as close as possible to the grounding range of the entire vehicle. The center of gravity can be positioned as close to the center of the ground contact range as possible with or without the load weight. Moreover, the lower part of the engine and the traveling device overlap in the side view of the aircraft, and
The upper part of the engine and the bed part can be overlapped so that the bed is located at the lowest level and the moving part is brought as close as possible.

〔The invention's effect〕

Therefore, regardless of whether or not there is a load, and whether or not the running ground is inclined forward or backward or whether or not there is unevenness, it is possible to travel stably and safely, such as with difficulty in pitching.

In addition, the overall height and overall length were made as small as possible to make it compact and easy to operate and store.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 1, on a front end side of a crawler type traveling machine body having a driving section (1) on a rear end side, a loading platform (2) arranged in parallel with the driving section (1) in the longitudinal direction of the machine body is provided. A dump truck (3) is mounted so as to be capable of swinging up and down around a front end side axis (X), thereby forming a transport vehicle capable of dumping a platform.

In order to enable the aircraft to travel, the center of gravity of the engine (E) should be located within the ground contact range of the left and right traveling devices (4) and (4) as shown in FIGS. 1 and 2. And, the left and right traveling devices (4) are moved closer to the cargo bed side from the input shaft (4a) of the left and right traveling devices (4) and (4) so that the lower part of the engine (E) overlaps with the traveling device (4). The engine (E) arranged between the (4) and the left and right traveling devices (4), (4)
Attached to the engine mounting frame (5) installed on the truck frames (4b) and (4b) of the vehicle, and the traveling mission (M) located on the rear side of the engine (E) is moved closer to the engine side toward the upper end side. The left and right traveling devices (4) are arranged in parallel with the engine (E) in the front-back direction of the body in an inclined posture.
In addition to being attached to (4), the rotational output of the engine (E) is based on the transmission structure shown in FIG.
It is configured to be transmitted to (4). That is, the rotation output of the engine (E) is input to the hydraulic continuously variable transmission portion (8) via the transmission belt (6) and the input shaft (7), and the rotation output of this transmission portion (8) is also input. It is input to a gear type transmission mission portion (10) capable of changing between high and low speed two stages via an input shaft (9), and the turning power of a forward output gear (11) of this transmission transmission portion (10) is paired with a steering clutch. One of the members (12a) and (12b) is connected to the input shaft (4a) of the one traveling device (4), and the other of the traveling device (4) is disposed via the other steering clutch member (12b). One of the traveling powers of one of the reverse output gears (13a) and (13b) of the speed change transmission part (10) is transmitted to the input shaft (4a) via the steering clutch member (12a) so as to be transmitted to the other. Rotation of the reverse output gear (13b) on the input shaft (4a) of the device (4) and on the other side The is arranged to respectively transmitted to the input shaft (4a) of the other of the traveling device through the steering clutch member (12b) (4).

One reverse clutch (14) and brake (15) are attached to the reverse output gear (13) in the gear type transmission (10).
It is attached to act on a) and (13b). Operate the reverse rotation clutch member (14) with the reverse rotation cylinder (C ₁ ),
The traveling brake (15) is operated by the brake cylinder (C ₂ ), and the pair of steering clutch members (12 a) and (12 b) are operated separately by the pair of traveling cylinders (C ₃ ), (C ₃ ). With the construction, these cylinders (C ₁ ) to (C ₃ ) are operated by one steering lever (16) based on the operation structure shown in FIG. 3, and the left and right traveling devices (4), (4) are operated.
It is configured to perform the airframe steering operation by performing the respective stop, braking and reverse rotation operations.

That is, one control valve (V) for the pair of steering cylinders (C ₃ ) and (C ₃ ), the reverse rotation cylinder (C ₁ ) and the brake cylinder (C ₂ ) are connected to the operation oil passage (17) and switched. The mode switching valve (18) and the variable relief valve (19) that changes the relief pressure of the operating oil passage (17) to switch between the reverse cylinder (C ₁ ) and the brake cylinder (C ₂ ) by operating wire etc. The steering mechanism (20) is linked to the steering lever (16). When the steering lever (16) is oscillated in the lateral direction of the body to move it to the straight-ahead position (S), the control valve (V) becomes the neutral position (N), and the steering cylinder (C ₃ ), (C ₃ ) is on the forward side, the reverse cylinder (C ₁ ) is on the clutch disengagement side, and the brake cylinder (C ₂ ) is on the brake disengagement side. When the steering lever (16) is operated to the first left turning position (L ₁ ) or the first right turning position (R ₁ ), the control valve (V) becomes the turning position (A ₁ ) or (A ₂ ). One steering cylinder (C ₃ ) is on the forward side and the other steering cylinder (C ₃ ) is on the reverse side, and the variable relief valve (19) is low pressure and the reverse cylinder (C ₁ ) and brake cylinder (C ₂₎ ) Is the cut side. When the steering lever (16) is operated to the second left turning position (L ₂ ) or the second right turning position (R ₂ ), the control valve (V)
Is in the swivel position (A ₁ ) or (A ₂ ) and one steering cylinder (C ₃ ) is on the forward side and the other steering cylinder (C ₃ ) is on the reverse side, and the variable relief valve (19) is At medium pressure, the mode switching valve (18) is in the brake position (B), the reverse cylinder (C ₁ ) is on the open side, and the brake cylinder (C ₂ ) is on the open side. When the steering lever (16) is moved to the 3rd left turning position (L ₃ ) or 3rd right turning position (R ₃ ), the control valve (V) becomes the turning position (A ₁ ) or (A ₂ ). One steering cylinder (C ₃ ) is on the forward side and the other steering cylinder (C ₃ ) is on the reverse side. The variable relief valve (19) is at high pressure and the mode switch (18) is in the reverse position (R). Then, the brake cylinder (C ₂ ) is on the cutting side and the reverse cylinder (C ₁ ) is on the entering side.

The rear end of the platform (2) is provided with a recess (2a) into which the upper part of the engine (E) enters when the platform (2) is in the lowered traveling position. That is, regardless of whether the upper part of the engine projects upward from the traveling body, the engine (E) and the carrier (2) are positioned so that the carrier (2) is located at a level as low as possible and close to the operating part (1). ), Interference is avoided by the recess (2a).

[Other Embodiments] As shown in FIG. 5, the operation unit (1) may be arranged on the front end side of the traveling machine body and the loading platform (2) may be arranged on the rear end side of the traveling machine body. Therefore, the end portion provided with the recessed portion (2a) of the loading platform (2) is referred to as the operation unit side end portion.

Instead of the crawler traveling device (4), a traveling device in which three or more tire wheels are arranged side by side in the machine longitudinal direction may be adopted. Therefore, these are used as the rough terrain traveling device (4).
Called.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a carrier according to the present invention. Fig. 1 is a partially cutaway side view of the entire carrier, Fig. 2 is a plan view of the entire carrier, Fig. 3 is a hydraulic circuit diagram, and Fig. 4 FIG. 5 is a schematic view of a traveling mission, and FIG. 5 is a partially cutaway side view of a differently implemented transport vehicle. (1) …… Operating section, (2) …… Bag, (2a) …… Concave,
(4) …… Rough terrain traveling device, (4a) …… Input shaft, (E)
…… Engine, (M) …… Mission mission.

Claims (1)

(57) [Claims] 1. A pair of left and right rough terrain traveling devices (4), (4)
A traveling machine body having a driving section (1) and a loading platform (2) are provided in parallel with each other in the longitudinal direction of the machine body, and an engine (E) is provided with an input shaft () of the rough terrain traveling apparatuses (4) and (4). 4a) is arranged closer to the cargo bed side and arranged between the left and right traveling devices (4), (4), and transmits the output of the engine (E) to the rough terrain traveling devices (4), (4). The engine (E) is closer to the upper end of the traveling mission (M) in a side view of the machine body.
The engine (E) is juxtaposed in the longitudinal direction with the engine (E) in an inclined posture toward the side, and the cargo bed (2) is provided with a recessed portion (2a) into which the upper portion of the engine (E) is inserted at an end of the operating section side. car.