JPH101976A - Skid steering type cargo-handling car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the overall height of a cargo-handling car. SOLUTION: A stepping space 13 is formed by expanding the front of a car body frame 4 and a pedal 14 for cargo-handling operation is installed to the bottom section of the stepping space 13, and a sheet 12 is arranged between the stepping space 13 and a static hydraulic driving unit 2 occupying approximately the center of the car body frame 4. A driver's seat 3 is formed in front of the static hydraulic driving unit 2, and the upper section of the driver's seat 3 is covered with a guard 16 in the same height as a pillar 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable displacement hydraulic pump which is driven by utilizing the rotation of an engine, and which is driven by a hydraulic fluid supplied from the hydraulic pump through a fixed displacement fluid motor. The present invention relates to a skid steer type cargo handling vehicle that performs traveling and steering operations simultaneously by independently driving wheels.

[0002]

2. Description of the Related Art A skid steer type shovel loader, which is a typical model of the skid steer type cargo handling vehicle, is used for transporting crops in an orchard, transferring materials in a shipyard, collecting poultry manure in a poultry house, and in a snowfall area. It is used for snow plowing. And the conventional skid steer type shovel loader,
The seat 12 is placed on the hydrostatic drive unit 2 as shown in FIG.
The cargo handling operation pedal 1 is provided at the front lower side of the seat 12.
A unique layout is adopted in which a footrest space 13 in which the driver's seat 4 is disposed and the driver's seat 3 is set at a high position are adopted.

[0003]

Under the above-mentioned use environment, a drooping tree branch of an orchard, a set of legs for shipbuilding,
Although it is possible to move efficiently if you go under a low ceiling or under the eaves of a private house, there is a problem that you cannot go under if the height to pass through is slightly lower than the guard that covers the driver's seat. If the guard is lowered with respect to the driver's seat set at a high position, sufficient head clearance cannot be secured above the operator's head, and if the guard is removed, the essential operator protection function will be lost. Also, if the engine is retracted to the position where it protrudes from the body frame and the hydrostatic drive unit is shifted backward from the seat, there is no obstacle under the seat and the seat can be lowered to a lower position, but the overall load balance will be reduced. It collapses and becomes unstable, and requires significant modifications not only to the body frame but also to cooling, air supply and exhaust, electric systems and hydraulic circuits.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a skid steer-type cargo handling vehicle (hereinafter simply referred to as a cargo handling vehicle) whose overall height can be set low by a slight layout modification. A driver's seat is formed by arranging a seat on a body frame in front of the unit and providing a footrest space in front of the seat.
It is desirable that the guard that covers the upper part of the driver's seat has a height that does not protrude above at least the upper end of the pillar for mounting the lift arm, and the footrest space is within a space generated between the body frame and the cargo handling attachment. It can be formed by enlarging the front part of the frame.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION With regard to a cargo handling vehicle according to the present invention,
An excavator loader of a high dump specification with a longer lift arm set will be described as an example with reference to the drawings. FIG.
Is an engine 1, a hydrostatic drive unit 2, and a driver's seat 3.
The engine 1 is mounted on the rearmost part of the vehicle body frame 4, and a hydrostatic drive unit 2 is assembled in front of the engine 1. The engine 1 and the hydrostatic drive unit 2 The position with respect to the body frame 4 is the same as that of the conventional model. Since the overall configuration of the vehicle is bilaterally symmetric, in the following description, one of the reference numerals for members provided bilaterally is omitted. Pillars 5 for attaching lift arms are provided on both sides at the rear end of the vehicle body frame 4, and base ends of lift arms 6 are respectively pivotally attached to upper ends of both pillars 5 so as to be vertically rotatable. A rear end of the bucket 7, which is widened forward, is rotatably attached to the front end of each of the lift arms 6 that is bent downward. A bracket 8 is pivotally connected to the bent portion of the lift arm 6 in an upward direction. The bracket 8 and the bucket 7 are connected while being pivotally attached.
Are connected to each other by pivotally connecting both ends of the connecting rod 10, and the bucket 7 is vertically rotated by driving the dump cylinder 9. The lower end of the pillar 5 and the intermediate portion of the lift arm 6 are connected by a lift cylinder 11 with both ends pivotally connected to each other. The bucket 7 moves up and down.

A seat 12 is provided at a position lower than the upper surface of the hydrostatic drive unit 2 on the body frame 4 ahead of the hydrostatic drive unit 2, and the seat 12 of the body frame 4 is provided in front of the seat 12. A footrest space 13 is formed by enlarging the lower portion, and the cargo handling operation pedal 1 is provided at the bottom of the footrest space 13.
The operator is seated on the seat 12 disposed in front of the hydrostatic drive unit 2 and rides with his / her feet extended to the cargo handling pedal 14.

The hydraulic drive unit 2 comprises an engine 1
, And right and left independently driven by operation of an operation lever (not shown) provided on the side of the driver's seat 3, and a variable displacement hydraulic pump rotationally driven by And a fixed displacement type fluid motor.

[0008] From the upper part to the rear part of the driver's seat 3, a guard 16 having substantially the same height as the pillar 5 is covered, and a net 17 is provided on both sides to protect the operator from falling objects and the like. However, care is taken to prevent hands and elbows from being inadvertently brought out and to prevent contact with the lift arm.

The shovel loader thus formed has the following features.
The driver's seat is set low by arranging the seat in front of the hydrostatic drive unit, so even if the guard is lowered and the overall height is lowered, sufficient head clearance can be secured above the operator's head, and the guard is the same height as the pillar Or, if it is lower than that, at least under the obstacle above the pillar, it is possible to move under the shortest distance and move without having to detour.

Further, there is no change in the position of the center of gravity or the external dimensions, and it can be dealt with by simple remodeling, and the driver's seat is closer to the front, so that it is easy to check the front, especially the portion immediately before the body frame.

The shovel loader shown in the embodiment has a dead space between the body frame and the bucket because of the high dump specification, and the dead space is enlarged by forming the footrest space in front of the body frame. Effective use of space is planned.

In the present invention, the cargo handling operation may be of a lever type instead of a pedal. In addition to a shovel loader, cargo handling vehicles having different attachments are generally used. Further, the number and types of wheels are not limited to those in the embodiment, and may be applied to, for example, a caterpillar type.

[0013]

According to the present invention, since the substantially central portion of the vehicle body frame is occupied by the hydrostatic drive unit, conventionally, the driver's seat is set at a high position, so that the total height tends to be high in the skid steer type. Since the overall height of the cargo handling vehicle can be reduced, it is possible to go under the place where the conventional model cannot pass, thereby improving workability. When the guard is lower than the pillar, the guard can pass at least as long as the pillar can pass through. Further, if the footrest space is enlarged and formed within the space formed between the body frame and the attachment, the space can be effectively used, and the overall dimensions are not changed, and can be dealt with with only slight improvement. .

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example of an embodiment in which a skid steer type cargo handling vehicle according to the present invention is applied to a shovel loader.

FIG. 2 is an explanatory view showing a conventional shovel loader.

[Explanation of symbols]

1. Engine, 2. Hydrostatic drive unit, 3. Driver's seat, 4. Body frame, 5. Pillar, 6. Lift arm, 7. Bucket, 8, Bracket, 9.
Dump cylinder, 10 connecting rod, 11 lift cylinder, 12 seat, 13 footrest space, 14
Cargo handling pedal, 15 tires, 16 guards,
17. Net.

Claims (3)

[Claims] 1. A skid steer-type cargo handling vehicle in which a seat is arranged on a vehicle body frame in front of an engine and a hydrostatic drive unit, and a footrest space is provided in front of the seat to form a driver's seat. 2. The skid steer-type cargo handling vehicle according to claim 1, wherein the guard covering the upper part of the driver's seat has a height that does not protrude at least above the upper end of the lift arm mounting pillar. 3. A skid-steer type cargo handling device wherein the footrest space is formed by enlarging a front portion of the vehicle body frame within a space generated between a vehicle body frame and a cargo handling attachment disposed in front of the vehicle body frame. Vehicle.