JPH0533359A - Small-sized back hoe of full swing type - Google Patents

Abstract

PURPOSE:To enable swing work to be executed in a narrow area by fitting the base end of an excavating device, roughly near a swing base provided with no riding and operating section, and by working a running device the swing base, and the excavating device with remote control. CONSTITUTION:On the upper section of a running machine body 3 provided with a pair of left and right hydraulic driving type crawler running-devices 1 and a sludge withdrawal plate 2 which can be hydraulically moved up and down, a swing base 4 for enabling the swing locus to be limited within a vehicle width is fully rotatably mounted. Then, the boom base section of an excavating device 5 is connected to the roughly central section of the swing base 4, and the rear section of the swing base 4 is provided with an engine 6 and a balance weight 7. Besides, an operating board 14 is provided with joy stick type levers 16 for operating the boom cylinder 8 of the excavating device 5, an arm cylinder 8, a bucket cylinder 10, and a swing hydraulic motor, remotely. Besides, the operating board 14 is provided with a running speed change lever 17 and a switch 18 for moving the sludge withdrawal plate 2 upward and downward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small backhoe mounted on a traveling vehicle body so that a swivel base equipped with an excavator can be fully swung.

[0002]

2. Description of the Related Art Conventionally, a full turn type backhoe has been constructed as a riding type regardless of its capacity.

[0003]

In the all-return type backhoe of the riding type, the boarding control unit provided on the swivel needs to be arranged so that the excavator can be seen well, and the engine and the excavator are weighed in the front-rear direction. It is necessary to provide a well-balanced structure, and for such a request, a boarding control unit is provided near the one side of the front half of the swivel base, and the base of the excavator is set near the other side of the swivel base. Generally, the engine is mounted in the second half. According to the basic arrangement configuration of the all-turning backhoe as described above, the smaller the aircraft is, the larger the proportion of the boarding maneuvering section on the turntable becomes, and the excavator has to be provided at a position far from the turning center. .. As a result, the turning space required to turn the excavator when it is folded and stored becomes larger as it exceeds the lateral width of the traveling vehicle body, and excavation work including turning cannot be performed in a small work site where the traveling body can enter. The excavation work was limited to the forward and backward movement. Further, the smaller the rut distance of the traveling device and the lower the stability of the machine body, the smaller the size of the machine is. The present invention has been made by paying attention to such an actual situation, and it is an object of the present invention to provide a small-sized backhoe of all-turning type which is capable of turning work in a narrow area and is also excellent in stability. is there.

[0004]

In order to achieve the above-mentioned object, a small-sized all-back type backhoe according to the present invention has a base end of an excavator mounted near the center of a turntable having no boarding control section. , Operation of traveling equipment, turning operation of swivel base,
And the operation of the excavator is configured to be performed by remote control.

[0005]

According to the above structure, for example, as shown in FIG.
By mounting the engine 6 on the rear part of the swivel 4 and disposing devices such as control valves on the left and right sides of the excavator 5, the excavator 5 can be folded and stored small near the swivel center of the swivel 4. It will be possible. Further, since this backhoe is a remote control type, the operator may issue an operation command from a safe place away from the machine body.

[0006]

As described above, according to the present invention, the excavation device can be stored near the center of the swivel base by removing the boarding maneuvering unit which occupies a large space on the swivel base for a small machine. As a result, the turning space can be accommodated within the width of the machine, and excavation work including all turns can be performed well even in a narrow work area. Moreover, since the user does not board the aircraft, it is now possible to safely perform work under adverse conditions in which the attitude of the aircraft is difficult to stabilize.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the entire side surface of a fully swivel type backhoe according to the present invention, and FIG. 2 shows the plane thereof. In this backhoe, a swivel base 4 having a swirl locus within the width of the vehicle body is mounted on the upper part of a traveling machine body 3 including a pair of left and right hydraulically driven crawler traveling devices 1 and an earth-draining plate 2 that can be hydraulically moved up and down. In addition, the structure is such that the swivel base 4 is provided with the excavation device 5, the engine 6, and the like. The excavator 5
The boom base is connected to the substantial center of the swivel base 4, the engine 6 and the balance weight 7 are provided at the rear part of the swivel base 4, and the excavator 5 is excavated on both left and right sides of the base. A boom cylinder 8, an arm cylinder 9, a bucket cylinder 10, a hydraulic motor that drives the crawler traveling device 1, and a hydraulic motor that drives the swivel base 4 in the forward and reverse directions; Control valve 11 for each hydraulic actuator such as a hydraulic cylinder
A group, a fuel tank 12 and a hydraulic oil tank 13 are provided. The control valve 11 is an on / off type or a proportional type solenoid valve, and a controller (not shown) for operating the control valve 11 and a remote control operation panel 14 are connected to the cable 1.
Connected with 5. The operation panel 14 has two joystick-type levers 1 for operating the three hydraulic cylinders 8, 9, 10 of the excavator 5 and the hydraulic motor for turning.
6, a pair of left and right traveling speed change levers 17, a switch 18 for raising and lowering the soil discharge plate 2, and the like are provided so that the vehicle body can be operated, the excavator 5 can be operated, and the turning can be remotely controlled.

A wireless operation (radio control) type can also be adopted as the remote operation means.

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

[Brief description of drawings]

1] Overall side view

[Fig. 2] Overall plan view

[Explanation of symbols]

 1 traveling device 4 swivel 5 excavator

Claims (1)

Claims: 1. A base end of an excavation device (5) is mounted near the center of a swivel base (4) not equipped with a boarding maneuvering section, and the traveling device (1) is steered and swiveled ( A small-sized all-back type backhoe configured to perform the turning operation of 4) and the operation of the excavating device (5) by remote control.