JP2001260947A - Hood device for rotary work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hood device for a rotary work machine improving maintainability while preventing the strength deterioration of a hood. SOLUTION: This hood device for a rotary work machine is provided with the hood 40 covering a plurality of apparatuses 25, 26 mounted on a swivel base 3, the inspection windows 41, 42 of the apparatuses 25, 26 formed on the hood 40, and a cover 43 openably closing the inspection windows 41, 42. A plurality of inspection windows 41, 42 are formed correspondingly to the apparatuses 25, 26, and the inspection windows 41, 42 are closed with the common cover 43.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonnet device for a turning machine such as a backhoe.

[0002]

2. Description of the Related Art For example, a turning work machine described in Japanese Patent Application Laid-Open No. 11-81381 is provided with a turning table which is rotatable about a vertical axis above a crawler traveling body. , A radiator, a hydraulic oil tank, a fuel tank and the like are provided, and these devices are covered with a bonnet. Further, the hydraulic oil tank, the fuel tank, the battery, and the radiator are arranged close to each other in the hood, and an inspection window is formed on an upper surface of the bonnet so that all of these devices can be inspected. Open and close freely.

[0003]

The inspection work that is performed on a daily basis in the above-mentioned turning work machine is performed over a plurality of devices. In the above-mentioned prior art, if one cover is opened, the inspection window is opened. This makes it possible to inspect tanks, radiators, and the like at one time, and thus has the advantage of greatly improving maintainability. However, in order to be able to inspect all the devices, a large opening must be formed in the bonnet as an inspection window, and this deteriorates the strength of the bonnet itself.

Particularly, in the prior art, a hydraulic oil tank, a fuel tank, and a radiator are arranged side by side on the right side of a swivel, and these are covered by a long bonnet.
The inspection window is also formed over a wide area before and after. Therefore, the area of the upper wall connecting the upper ends of the left and right side walls of the bonnet to each other becomes small, and the strength of the side walls is reduced, so that not only the function of protecting the internal device is impaired, but also the closure of the cover is deteriorated due to occurrence of distortion or the like. There is fear. It is also conceivable to reinforce the inside of the side wall to compensate for the reduction in strength. However, this causes a problem that the space in the hood is damaged.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bonnet device of a turning work machine that improves maintainability while suppressing a decrease in bonnet strength.

[0006]

The present invention employs the following technical means to achieve the above object. That is, the present invention provides a swivel working machine including a hood covering a plurality of devices mounted on a swivel table, forming an inspection window of the device on the bonnet, and a cover for closing the inspection window so that the inspection window can be opened and closed. In the bonnet device described above, a plurality of the inspection windows are formed corresponding to the respective devices, and the plurality of inspection windows are closed by a common cover.

According to this, a plurality of inspection windows formed in the hood can be formed as small as possible, and it is possible to prevent the strength of the bonnet from being reduced.
Since each inspection window can be opened and closed by a common cover, maintenance of each device can be performed at a time just by opening this cover, thereby improving the maintainability. The present invention mounts a tank and a radiator on one side of a swivel base and covers them with a bonnet. The bonnet has a first inspection window corresponding to the tank, and a first inspection window corresponding to the radiator and the first radiator.
And a second inspection window independent of the inspection window is formed, and the first and second inspection windows are opened and closed by a common cover.

According to this, since the inspection windows for the tank and the radiator are formed independently of each other, each inspection window can be formed as small as possible, and it is possible to prevent the strength of the hood from lowering. In spite of this, maintenance (including refueling and water supply) for the tank and the radiator can be performed at a time simply by opening the common cover, thereby improving the maintainability. The present invention is characterized in that a control valve unit is disposed laterally adjacent to the tank, and a utility space is provided above the control valve unit and in the bonnet, which can be closed and opened by the cover so as to be openable and closable. It is assumed that.

As described above, by arranging the control valve unit horizontally, a space can be formed in the bonnet above the control valve unit. Utility space (multipurpose space) that can be stored or used for other purposes can be provided. Further, by closing the utility space openably and closably using the cover, it is possible to protect the luggage and the like stored inside without providing a special cover. In the utility space, a storage box is preferably provided detachably so that luggage and the like can be easily stored in the hood, and by removing the storage box, maintenance of the control valve unit through the inspection window is also easy. Will be able to do it.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 3 and 4 show a turning work machine 1 of the present invention exemplified by a backhoe. The backhoe 1 has a swivel 3 on an upper part of a crawler-type traveling device 2 around an axis X in a vertical direction. The crawler traveling device 2 is provided with a dozer device 4 in front of the crawler traveling device 2, and the swivel table 3 is provided with an excavating device (working device) 5. Further, the backhoe 1 of the present embodiment includes a swivel 3
Has a substantially circular shape in plan view, the support portion 6 of the excavator 5 is disposed within the plane of the swivel 3, and the swirl locus of the swivel 3 is the front, rear, left and right widths of the traveling device 2. It is a so-called ultra-small swivel type backhoe that is configured to fit almost inside.

The excavator 5 includes a first boom 8 supported by a support portion 6 of the swivel base 3 so as to be swingable back and forth.
A second boom 9 pivotally connected to the upper end of the second boom 9, a connecting bracket 10 pivotally connected to the front end of the second boom 9 so as to be able to swing left and right, and swinging up and down or forward and backward by the connecting bracket 10. The first boom 8, the arm 11, and the bucket 12 each include a hydraulic cylinder, and have an arm 11 freely pivotally connected, and a bucket 12 pivotally movable back and forth or up and down with the arm 11. The swing operation is performed by the cylinder 13, the arm cylinder 14, and the bucket cylinder 15.

The first boom 8 and the connecting bracket 10
Are connected to each other by a link 16, and a parallel quadruple link is formed by the link 16, the first and second booms 8 and 9, and the connection bracket 10, and the link between the first and second booms 8 and 9. The second boom 9 is swung left and right by an offset cylinder 17 formed of a hydraulic cylinder interposed in the second boom 9. The swivel base 3 has a base member 20 made of a thick plate material constituting a bottom portion thereof, and a weight 21 for balancing the weight with the excavator 5 is provided at a rear portion of the base member 20. A cover member 22 is provided on a side portion and a front portion of the base member 20, and constitutes an outer shell of the swivel 3 together with the weight 21.

An engine 24, a radiator 25, a hydraulic oil tank 26, a fuel tank 27, a control valve unit 28, and the like are mounted on a base member 20 via brackets, stays, and the like. I have. The engine 24 is disposed horizontally at the rear of the swivel 3, and a radiator 25 is disposed on one side (right side). In addition, a hydraulic oil tank 26 is disposed on one side (right side) of the swivel 3 and in front of the radiator 25.
A control valve unit 28 is provided in front of the hydraulic oil tank 26.

The control valve unit 28 is formed in a substantially rectangular parallelepiped block shape by connecting and integrating a plurality of control valves for controlling hydraulic equipment such as the excavator 5 and the traveling device 2 with each other. . On the other side (left side) of the swivel 3 in front of the engine 24, a driver seat 32,
A control unit 36 having a step 33 and a control box 35 provided with a control lever 34 and the like is provided.
Is covered by a canopy device 31. Also,
The support unit 6 of the excavator 5 is disposed between the control unit 36 and the left and right sides of the hydraulic oil tank 26 and the control valve unit 28.

The fuel tank 27 is located on the other side (left side) of the swivel 3 opposite to the hydraulic oil tank 26 and substantially below the driver's seat 32. By arranging the fuel tank 27 and the fuel tank 27 in the left and right directions, the left-right balance of the swivel base 3 can be appropriately achieved, and the right space of the swivel base 3 can be secured widely to form a utility space S described later. I have to. The bonnet 30 is formed of a resin or metal plate material, and includes an openable and closable rear hood 38 that covers a rear portion of the engine 24 and the radiator 25.
It has a right bonnet 40 covering the front of the radiator 25, the hydraulic oil tank 26 and the control valve unit 28, and a left bonnet 39 covering the front of the engine 24, the fuel tank 27 and the like. Reference numerals 40 are disposed adjacent to each other on the left and right, and are fixed to the swivel 3. The left and right side bonnets 39, 40 may be formed integrally with each other.

As shown in FIGS. 1 and 2, the right bonnet 40 is formed to be long in the front and rear directions so as to cover substantially the entire area of the right side of the swivel base 3 (the right area of the support portion 6). The upper wall has inspection windows 41 and 4 for inspecting internal devices.
2 are formed. Specifically, the inspection windows 41 and 42
Is a first inspection window 41 formed above and corresponding to the hydraulic oil tank 26 and the control valve unit 28, and corresponds to the radiator 25 and is located above the radiator 25 independently of the first inspection window 41. And a second inspection window 42 formed in the first inspection window.
The two covers 43 are adapted to be opened and closed freely.

The first inspection window 41 is connected to the hydraulic oil tank 2
6 and the control valve unit 28 are formed in a large opening so as to open substantially the entire area thereof. On the other hand, the second inspection window 42 has a minimum necessary range in which the radiator 25 can be inspected, specifically, , At least in a small opening corresponding to a region above the radiator cap (water supply port) 25a. With such a configuration, the upper wall area of the right side hood 40 can be reduced as much as possible in comparison with the case of forming a continuous large opening inspection window corresponding to all the devices in the right side hood 40 as in the related art. And a reduction in strength can be suppressed.

Further, by opening the common cover 43, it is possible to perform lubrication, water supply, inspection, or the like for each of the hydraulic oil tank 26, the control valve unit 28, and the radiator 25 at a time, thereby improving maintainability. It is sufficient if one lock device (not shown) for holding the cover 43 in the closed state is provided. The cover 43 has a left edge on a right side bonnet 40.
The hinge member 4 is attached to the upper edge of the left side wall of the
It is supported so as to be able to swing open and close via 4. Also, the first
A first closing portion 43A that closes the inspection window 41, and a second closing portion 43B that projects rearward from a rear edge of the first closing portion 43A and closes the second inspection window 42, Second
Since the inspection window 42 is formed to the minimum necessary size, the second closing portion 43B can be formed as small as possible, so that the material of the cover 43 can be reduced, and the opening and closing can be performed while suppressing an increase in weight. Can be easily performed.

Further, since the cover 43 is opened and closed with the left and right side edges as swinging fulcrums, the upwardly protruding amount when the cover 43 is opened despite being formed long in the front and rear direction becomes small. Even when the bucket 12 of the excavator 5 is positioned (see FIG. 4), the open cover 43 is prevented from interfering with the bucket 12. FIG.
As shown in the figure, the control valve unit 28 is disposed horizontally with its longitudinal direction facing forward and backward. Above the control valve unit 28 and in front of the hydraulic oil tank 26, a space S opened and closed by the cover 43 is provided. Is formed.

In the present invention, this space S is used as a utility space, and it is possible to store in-vehicle tools, grease guns, worker's luggage, and the like in this space S. The storage box 45 may be configured to be detachably mounted in S. By forming such a utility space S in the hood 40, other spaces on the swivel 3, for example, the space of the control unit 36 and the like are not damaged by on-board tools and luggage, etc. Window 4
By closing with the cover 43 for 1 and 42, it becomes possible to protect luggage and the like from wind and rain, earth and sand, etc. without providing a cover dedicated to the space S separately.

Further, by removing the storage box 45 provided in the space S, the control valve unit 28 is removed.
Inspection can be easily performed through the first inspection window 41. The present invention can be appropriately changed in design without being limited to the above-described embodiment. For example, the first inspection window 41 includes:
Although the openings are relatively large corresponding to both the hydraulic oil tank 26 and the control valve unit 28, two independent inspection windows are formed separately for the hydraulic oil tank 26 and the control valve unit 28. It may be. In this case as well, each inspection window can be opened and closed freely by the common cover 43, thereby preventing the strength of the bonnet 40 from being reduced, and at the same time, each device can be maintained by opening the cover 43.

The turning work machine 1 is not limited to the super turning type backhoe described above.
The left and right swing fulcrum is arranged, and the turning locus drawn by the rear end of the swivel 3 is contained within the left and right front and rear widths of the traveling device 2. A standard backhoe in which the left and right swing fulcrums of the excavator 5 are arranged and the turning locus drawn by the rear end of the swivel 3 projects from the left and right or front and rear widths of the traveling device may be used. Further, another attachment device may be mounted instead of the bucket 12 of the working device 5.

FIG. 5 shows a bonnet device of a turning work machine shown as another disclosure. In this example, a first oil tank 26 and a control valve unit corresponding to a control valve unit are provided on an upper wall of a right bonnet 40. Inspection window 41 and radiator 2
5 is different from the above-described present invention and similar to the prior art in that the second inspection window 42 corresponding to the fifth inspection window 5 is formed continuously. Is formed in a notch so as to cover the minimum area required for the radiator cap 25a, specifically,
It is different from the prior art.

The second closing portion 43B of the cover 43 is also
The second inspection window 42 also differs from the prior art in that the second inspection window 42 is formed to have a minimum necessary size that can be closed.
In the bonnet device of the present example, the upper wall area of the right side bonnet 40 is smaller than that of the bonnet device of the present invention, so that the strength is inferior in terms of strength. This is advantageous in that the cover 43 can be widely secured and the cover 43 can be formed as small and light as possible.

[0025]

As described above in detail, according to the present invention, the inspection window of each device mounted on the swivel table can be formed as small as possible, and it is possible to prevent the strength of the hood from lowering. In addition, since each inspection window can be opened and closed by a common cover, maintenance of each device can be performed at a time just by opening this cover, thereby improving the maintainability.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a swivel according to an embodiment of the present invention.

FIG. 2 is a perspective view of the swivel.

FIG. 3 is a plan view of the turning work machine.

FIG. 4 is a side view of the turning work machine.

FIG. 5 is a perspective view of a swivel table showing another disclosure.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 turning work machine 3 turning table 25 radiator 26 hydraulic oil tank 28 control valve unit 30 bonnet 40 side bonnet 41 first inspection window 42 second inspection window 43 cover 45 storage box S utility space

Claims (4)

[Claims] A plurality of devices (2) mounted on a swivel (3).
A hood (40) for covering the equipment (25, 26).
1, 42) and the inspection windows (41, 4).
2) In a bonnet device of a turning work machine provided with a cover (43) for opening and closing the opening and closing freely, a plurality of the inspection windows (41, 42) are formed corresponding to each device (25, 26). The inspection window (41, 42) is closed by a common cover (43). 2. A tank (2) is provided on one side of the swivel (3).
6) A radiator (25) is mounted, and these are covered with a hood (40).
0), a first inspection window (41) corresponding to the tank (26) and a second inspection window (25) corresponding to the radiator (25) and independent of the first inspection window (41). 4
2) and the first and second inspection windows (41, 4).
A bonnet device for a turning work machine, wherein 2) is configured to be opened and closed by a common cover (43). 3. A control valve unit (28) is disposed laterally adjacent to the tank (26), above the control valve unit (28) and in the hood (40).
The bonnet device for a turning work machine according to claim 2, wherein a utility space (S) closed and opened and closed by the cover (43) is formed. 4. In the utility space (S),
The hood device of a turning work machine according to claim 3, wherein the storage box (45) is detachably provided.