JP3146153B2 - Backhoe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control box provided with a control device on a side of a turntable on a lateral side of a control seat, and a hood mounted behind the control seat and the control box. The present invention relates to a backhoe in which a driving unit is arranged in a state where the driving unit is disposed.

[0002]

2. Description of the Related Art Conventionally, in a backhoe of this type, a control box is made to be able to change its posture by a swing operation around a horizontal axis so as not to hinder the operator from getting on and off, or is completely fixed. Is well known.

[0003]

However, in the above-mentioned conventional structure, when performing maintenance work on various devices installed in the hood behind the control box, the work is performed from the swivel base. The operator had to get off and turn around behind the hood to open the entire hood, which made the operation cumbersome. Further, since the control box and the like are provided relatively close to the hood, the control box tends to be an obstacle to maintenance of the driving unit.

[0004] The present invention has been made in view of the above circumstances, and has as its object to provide a backhoe that can easily perform maintenance work on a prime mover with relatively little effort.

[0005]

[Means for Solving the Problems]

(Structure) The backhoe according to claim 1 of the present invention is arranged such that a bonnet is disposed at a position extending from the rear of the pilot seat to the side, and a front wall part facing the rear of the pilot seat and a side wall facing the lateral of the pilot seat. And a control box is arranged between the side wall and the control seat, and at a position rearward of the control box, near a boundary between the front wall and the side wall. An opening for inspecting the inside of the hood is formed at the position, and a lid-like portion for opening and closing the opening is provided.

(Operation) According to the structure of the first aspect of the present invention, an opening for inspection in the hood is provided at a position near the boundary between the front wall portion and the side wall portion at a position rearward of the steering box. The inspection and maintenance work on the inside of the hood can be performed from the cockpit side through the opening provided in the hood by opening the lid.

(Effects) Therefore, according to the configuration of the first aspect of the present invention, when performing inspection and maintenance work on the rear side portion of the control box in the bonnet, it is not necessary to open the entire bonnet. Therefore, the troublesome opening work and the like can be eliminated to improve the workability.

(Structure) A backhoe according to a second aspect of the present invention is the backhoe according to the first aspect, wherein a portion facing the opening of the steering box located in front of the opening is positioned with respect to the opening. And is configured to be displaceable in the near and far directions.

(Operation) According to the configuration of the second aspect of the present invention, the portion facing the opening of the control box located in front of the opening is configured to be displaceable in the perspective direction with respect to the opening. Therefore, when performing the maintenance work through the opening, the portion facing the opening of the control box is separated from the opening so that the control box does not interfere with the opening.

(Effects) Therefore, according to the configuration of the second aspect of the present invention, the inspection and maintenance work for the prime mover can be easily performed through the opening in a state where the control box is not obstructed. It becomes easy,
Work has also progressed, and workability has been further improved.

(Structure) A backhoe according to a third aspect of the present invention is the backhoe according to the second aspect, wherein the front end of the control box swings and displaces around a horizontal axis set at the front of the control box. In this case, a portion of the control box facing the opening is configured to be displaceable in the near and far directions with respect to the opening.

(Operation) According to the configuration of the third aspect of the present invention, in performing inspection and maintenance work on the inside of the hood through the opening, a simple operation of only swinging the control box around the horizontal axis. The work can keep the maneuvering box out of the way when working through the opening.

(Effects) Therefore, according to the structure of the third aspect of the present invention, the operation box can be simply operated by swinging the operation box around the horizontal axis, and the operation box can be operated through the opening. Can be kept out of the way, so that workability can be greatly improved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the backhoe. The backhoe is provided with a swivel 3 which is rotatable around a vertical axis on a machine base 2 supported by a pair of left and right crawler traveling devices 1 and 1, and a backhoe working device 4 is mounted on the swivel 3 Control unit 5, Engine 6 as prime mover
And so on.

As shown in FIGS. 3 to 6, the engine 6 and the like are housed in a bonnet 7 made of sheet metal, and the bonnet 7 is provided with a control seat 8 in the boarding control section 5 and a control seat 8 of the control seat 8. It is provided on the swivel 3 over the rear of the control boxes 9 and 10 disposed on both left and right sides and the right side of the control seat 8. Therefore, the front wall portion 7F is formed on the bonnet 7 in a state facing the control boxes 9, 10 and the control seat 8, and the side wall portion 7S is formed in the bonnet 7 in a state facing the right side of the right control box 10. Is formed. A cross control lever for operating the backhoe operating device 4 and the like is installed in the left control box 9 of the left and right control boxes 9 and 10, and the left control box 9 is operated. Is provided so as to be vertically swingable and displaceable around a horizontal axis P1 set on the rear side. The vertical swing displacement prevents the operation box 9 from hindering the operator from getting on and off the operation seat 8 of the left operation box 9, and also enables proper operation during the operation. Further, as shown in FIG. 4, the right control box 10 includes a cross control lever for operating the backhoe operating device 4 and the like, and the display panel unit 1.
The dozer operation lever 12 and the accelerator operation lever 13 are disposed at the front and rear of the display panel 11 at the side thereof, and the main key is disposed at the rear of the display panel 11. A switch operation unit 14 is provided. As shown in FIGS. 5 (a) and 5 (b), the control box 10 is attached to the side wall 7S of the bonnet 7.
While being provided to be able to swing around the horizontal axis P2,
The normal use posture and the retractable posture in which the rear end of the control box 10 is separated upward and forward from the bonnet 7 are switchable and position-fixable. That is, the control box 10 is pivotally mounted around a horizontal axis P2 set near the front end of the control box 10, and is configured to be displaceable in the perspective direction with respect to the front side 7F of the bonnet 7. I have.
Then, in each of the use posture and the evacuation posture, the posture can be fixed to the side wall portion 7S by the set bolt 16.

FIGS. 3, 4 and 5 (a),
As shown in (b), in the bonnet 7, near the boundary between the front wall portion 7F and the side wall portion 7S, immediately after the right control box 10, a front wall facing the control box 10 is provided. An opening 17 is formed in the portion 7F, and a lid 18 is provided as a lid-like portion for closing the opening 17 so that the opening 17 can be opened and closed. The lid 18 is manufactured in conformity with the shape of the opening 17 and is bent and formed in accordance with the shape of the front wall 7F, and is pivotally supported by a hinge so as to be swingable around the horizontal axis P3. In the closed state, it is configured to be freely fixed and released by a simple fixing structure. An alternator 19 is provided at a position facing the opening 17 in the hood 7. Inspection and maintenance such as adjustment of the belt tension of the belt transmission mechanism 20 for linking the alternator 18 and the engine output shaft can be performed through the opening 17.

Therefore, according to the above configuration, during normal work, the opening 17 is closed by the lid 18 and
The right control box 10 is fixedly held at the normal use position. In this case, the rear end of the right control box 10 is close to the front wall 7F of the hood 7. On the other hand, when the alternator 19 in the bonnet 7 is adjusted, the right control box 10 is swung around the horizontal axis P2 so that the rear end is separated upward and forward from the front end of the bonnet 10. Change to the posture, fix and hold it with the set bolt 16, and open the opening 17,
The maintenance work is performed from the cockpit 8 side. Thus, a desired maintenance operation can be performed without the need to open the entire hood 7 and the operator can easily work from the cockpit 8 without the operator getting off the machine.

[Other Embodiments] In the above embodiment, the entire control box is displaced in the perspective direction by displacing the whole of the control box. The front part of the control box may be fixed to the front part of the control box by dividing the front and rear parts into two parts, and only the rear part of the control box may be configured to be displaceable in the perspective direction with respect to the front part of the hood. By providing the whole of the control box or the rear part facing the front side of the bonnet detachably on a swivel or the like, the rear part of the control box is far from the maintenance opening on the front part of the bonnet. You may comprise so that displacement is possible in a direction. In other words, the control box is usually installed so that its rear end is located near the opening, and when performing maintenance or the like, the entire control box or the rear side portion facing the front side of the hood is removed from its mounting location. It is designed to be able to do that.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a backhoe.

FIG. 2 is an overall plan view showing a backhoe.

FIG. 3 is a partially broken front view showing a pilot seat and the like.

FIG. 4 is a partially broken plan view showing a swivel table.

FIG. 5 is a longitudinal side view showing a control box and the like in a use posture (a), and a longitudinal side view showing a control box and the like swung forward (b).

FIG. 6 is a side view showing a right-hand steering box and the like in a use posture (a), and a side view showing a right-hand control box and the like in a retreat posture (b)

[Explanation of symbols]

 Reference Signs List 7 bonnet 7F front wall part 7S side wall part 8 pilot seat 10 pilot box 17 opening 18 lid part P2 horizontal axis

Claims (3)

(57) [Claims] 1. A hood is disposed at a position extending from the rear of a pilot seat to a side, and a front wall part facing the rear of the pilot seat and a side wall part facing the lateral of the pilot seat are formed in the bonnet. An operation box is disposed between the side wall and the control seat, and an opening for inspection in the hood is provided at a position near the boundary between the front wall and the side wall at a position rearward of the operation box. And a lid having a lid for opening and closing the opening. 2. The backhoe according to claim 1, wherein a portion facing the opening of the steering box located in front of the opening is configured to be displaceable in a near-far direction with respect to the opening. 3. A portion of the control box that faces the opening by swingingly displacing the control box around a horizontal axis set at the front of the control box to form the opening facing the opening. 3. The backhoe according to claim 2, wherein the backhoe is configured so as to be displaceable in a near-far direction relative to the backhoe.