JP2001288777A - Construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the ease of inspection and maintenance and efficiency by arranging auxiliary equipment or the like requiring daily inspection and maintenance at a position so that it can be inspected and maintained easily. SOLUTION: This building machine can be inspected and maintained while a door 51 is open by mounting such auxiliary equipment as filters 61 and 64D to the inside of an opening/closing door 51 that is provided at a building 5 of this construction machine, thus performing inspection and maintenance efficiently in a wide and easy posture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to improvement of maintenance and maintenance of a construction machine having an engine, a hydraulic pump, various actuators, and the like. .

[0002]

2. Description of the Related Art A hydraulic excavator will be described as an example of a construction machine and will be described with reference to FIGS. FIG. 6 is a perspective view of the revolving structure of the hydraulic excavator. In FIG. 6, some devices such as an engine and a pump provided in the building 5 described later and auxiliary devices such as a filter are indicated by solid lines. Others are 2
Indicated by the dotted line.

In FIG. 6, reference numeral 2 denotes a revolving unit which is mounted on a running body (not shown) so as to be revolvable. 11, and other components such as the above-mentioned devices and auxiliaries.

[0004] The building 5 covers a part of the above-mentioned equipments and auxiliaries, and has a part of the surface thereof, for example, a part of the hydraulic oil tank 7 or the fuel tank 8 which may appear on the outer surface. In combination, they are formed so as to be as desirable as possible in view of the field of view and the overall shape. Inside the building 5, for example, an engine 60, a fuel filter 61 as an auxiliary device provided in the middle of a fuel pipe of the engine 60, and a pressure oil which is attached to the engine 60 and operates various actuators of a hydraulic shovel are supplied. The pump device 63 is supported by a frame such as the main frame 11, a bracket, or the like.

[0005] The building 5 is provided with directional control valves and the like (not shown) for controlling various actuators for driving the hydraulic excavator in addition to the above-mentioned devices. It is connected by a pipe such as a hose so that hydraulic oil and the like from the pump device are circulated. In FIG. 6, a pilot pipe 64 is shown as a part of the pipe that is piped as a hydraulic pilot system for controlling a directional control valve and a pump device.

Further, in the building 5, doors 51, 52 and the like necessary for performing maintenance and inspection of the equipment and its auxiliary equipment provided in the building 5 are provided at appropriate positions. I have.

[0007] As an example of the above-mentioned various devices and auxiliaries,
This will be described in detail below with reference to FIGS.

FIG. 7 is a perspective view showing a part of the engine 60 shown in FIG. In FIG. 7, a fuel filter 61 is attached to an engine 60 via a bracket 62, and a fuel tank 8 (FIG.
A pipe 61A for supplying fuel to the injection pump of the engine 60 is connected to a pipe 61A for supplying the fuel from the fuel supply pipe 61A. The filter 61 is configured to filter impurities in the fuel supplied from the fuel tank 8 by an element provided therein, or to separate water and accumulate it at a lower portion of the filter. Therefore, it is necessary to remove the accumulated water or replace the element in the filter at regular intervals to check and maintain the fuel so that good fuel can always be supplied.

FIG. 8 is a perspective view showing in detail a portion of the pilot pipe 64 shown in FIG. 6 as a part of the hydraulic pilot system, and the pump device 63 is shown by a two-dot chain line.

In FIG. 8, a hose 64A is connected to the hydraulic oil tank 7 (see FIG. 6) and the gear pump 64B. From the gear pump 64B, hydraulic oil for hydraulic pilot is discharged, and a hose 64C, a filter 64
Through D, it is further connected to an operation valve (not shown) provided in the cab through a hose 64E. Further, it is connected to a regulator of a variable displacement hydraulic pump constituting the pump device 63 via one hose 64F. Here, the pilot hydraulic oil filter 64 </ b> D is appropriately mounted in the building 5, such as on the bracket 111 supported by the main frame 11.

The filter 64D has an element therein and purifies the pressure oil from the gear pump 64B to supply the purified oil to the operation valve and the regulator. Therefore, with respect to the filter 64D as well, every predetermined time, the accumulated water and dust are removed, and the elements in the filter are replaced.
Inspection and maintenance must be performed so that good hydraulic oil can always be supplied.

Here, the above-described fuel filter 61 is provided with the configuration shown in FIG.
As shown in (1), it is mounted facing the counterweight 10 side below the engine 60, and inspection and maintenance are performed from the lower surface side of the revolving unit 2.

A pilot operating oil filter 64 is also provided.
D is appropriately attached to a bracket 111 or the like supported by a frame member (not shown) of the building 5 supported by the main frame 11. When the user enters the building 5 through appropriate doors such as the doors 51 and 52 and the doors are opened, for example, the operator puts his body inside so that the operator can get on and perform inspection and maintenance.

[0014]

The above has described a part of the equipment and accessories in the building 5, but inside the building 5 of the revolving unit 2, the above-mentioned various equipment and accessories are also provided. Provided. However, the height and width of the building 5 need to be such that the operator in the cab 4 does work while checking obstacles and other workers behind and on the sides, so that the visibility is not obstructed. Limited by width. In addition, various devices must be arranged in the building 5 subject to such restrictions, and in many cases, various arrangements are required, but as a result, they must be arranged in a narrow space. As described above, it is difficult to arrange various devices and accessories in the building 5 whose size is limited, and it is difficult to secure a space for easy inspection and maintenance. .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to arrange at least auxiliary equipment requiring daily inspection and maintenance at a position where inspection and maintenance can be easily performed, and to facilitate inspection and maintenance and improve efficiency. It is.

[0016]

A revolving body, a revolving body pivotally mounted on the traveling body, a working machine mounted on the revolving body so as to be able to ascend and descend, and provided on the revolving body. A building provided with a hinge on one side and rotatably supporting a door that opens outward, equipment such as an engine, a hydraulic pump, a directional control valve, and various piping provided in the building, and such equipment. Auxiliary equipment such as various filters provided along with it,
This is achieved by attaching at least one of the auxiliary devices inside the door of the building.

Also, a traveling body, a revolving body pivotally mounted on the traveling body, a working machine mounted on the revolving body so as to be able to move up and down, and a hinge provided on one side of the revolving body. A building that rotatably supports a door that is provided and opens outwardly, equipment such as an engine, a hydraulic pump, a directional control valve, and various pipes provided in the building, and equipment that is provided in association with the equipment. And at least one auxiliary device among the auxiliary devices, the inside of the door of the building and one side is hinged to a support member in the building. This can be achieved by attaching to a mounting member that is rotatably supported and that rotates outside the building.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same components as those in the prior art are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 shows the entire configuration of a hydraulic excavator provided with an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a traveling body, which includes a drive wheel 1A, an idle wheel 1B, a track frame 1C, a crawler belt 1D, and the like.

Reference numeral 2 denotes a revolving unit provided on the traveling unit 1 so as to be revolvable, and is roughly composed of a driver's cab 4, a building 5, a side walk 9, and the like.

Reference numeral 3 denotes a working machine which is attached to the revolving unit 2 so as to be able to move up and down, and includes a boom 3A, an arm 3B, and a bucket 3
C, and boom cylinder 3D, arm cylinder 3E,
It is composed of a bucket cylinder 3F and the like.

As described above, the building 5 includes devices such as an engine, a radiator, a hydraulic pump and a hydraulic tank, directional control valves for controlling the driving of various actuators, various piping, and the like, which are not shown. Auxiliary devices such as various filters are provided in association with. These various devices are appropriately mounted and supported on a frame, a bracket, or the like. Further, in the building 5 provided so as to surround the various devices, doors 51, 52 and the like necessary for inspection and maintenance of the various devices inside are provided at appropriate places.

FIG. 2 is a plan view taken along line II-II in FIG. 1, and FIG. 3 is a front view taken along line III in FIG. 2 and 3, the door 51 has a hinge 51A fixed to one side, and the hinge 51A is fixed to a bracket 51B supported by a frame (not shown). On the opposite side of the door 51 from the hinge 51A, a grip portion 51E for opening and closing and for holding the door 51 in a closed state is provided, and is opened to the outside of the building 5 using the hinge 51A as a rotation axis. It has become. Here, in FIG. 2, a solid line indicates a state where the door 51 is open, and a two-dot chain line indicates a state where the door 51 is closed.

Reference numeral 51C denotes a screw seat fixed to the door 51 by, for example, welding, and a fuel filter 61 and a filter 64D for hydraulic oil are fixed by bolts 51D. The fuel filter 61 includes a fuel supply hose 61AA, one side of which is connected to a fuel tank, and a hose 6A, one side of which supplies fuel to an injection pump of the engine.
1BB is connected.

The filter 64D is connected to a hose 64CC, one side of which is connected to a gear pump and into which pilot hydraulic oil discharged from the gear pump flows, and a hose 64EE, one side of which is connected to an operation valve in the cab. I have. The hose 64EE is branched at a position (not shown), and the hose is connected to a regulator of a variable displacement hydraulic pump.

Here, the hoses 61AA, 61BB,
The lengths of 64CC and 64EE are set such that the hoses can move following the opening and closing of the door 51 because the hoses are connected to the filters 61 and 64D fixed to the door 51.

With the above-described configuration, when inspecting and maintaining the fuel filter 61 and the hydraulic oil filter 64D, the operator gets on the crawler belt of the traveling body or on the sidewalk and opens the door 51. Can be done in a state. Therefore, inspection and maintenance such as drainage and replacement of the filter element can be efficiently performed with a wide and easy posture.

Next, another embodiment of the present invention will be described with reference to FIGS. FIG. 4 shows in FIG.
FIG. 5 is a plan view taken along the line II-II, and FIG. 5 is a front view taken along the line IV in FIG. 4 and 5,
The door 51 has a hinge 51A fixed to one side, and the hinge 51A is a bracket 51 supported by a frame (not shown).
B is fixed. The door 51 is opened to the outside of the building 5 as indicated by an arrow B using the hinge 51A as a rotation axis.

Reference numeral 70 denotes a fuel filter 61 and a filter 6
A bracket as a support member for mounting 4D is fixed on one side to a hinge 70A, and the hinge 70A is fixed to a bracket 70B fixed to a frame (not shown) or the like. The bracket 70 is stored inside the door 51 when the door 51 is closed, that is, inside the building 5, and when the door 51 is opened, the hinge 7 is closed.
It is configured to be able to rotate outside the building 5 as indicated by an arrow A with 0A as a rotation axis. 4, a solid line indicates a state where the door 51 is opened and the bracket 70 is also exposed to the outside, and a two-dot chain line indicates a state where the bracket 70 is stored inside the door 51 and the door 51 is closed. When the bracket 70 is stored, it is preferable that the bracket 70 is further held by a holding portion in the building 5.

Reference numeral 70C denotes a screw seat fixed to the bracket 70B by welding or the like, and the fuel filter 61 and the filter 64D are mounted by bolts 70D. The fuel filter 61 is connected to a fuel supply hose 61AA, one side of which is connected to a fuel tank, and a hose 61BB, one side of which supplies fuel to an injection pump of the engine.

The filter 64D is connected to a hose 64CC, one side of which is connected to a gear pump, into which pilot operating oil discharged from the gear pump flows, and a hose EE, one side of which is connected to an operation valve in the cab. I have. The hose 64EE is branched at a position (not shown) and connected to the regulator of the variable displacement hydraulic pump.

Here, the hoses 61AA, 61BB,
The length of 64CC and 64EE is due to the fact that the respective hoses are connected to the fuel filter 61 and the filter 64D attached to the bracket 70,
The length is set to have a margin so as to be able to move following the rotation of.

With the above-described structure, when checking and maintaining the fuel filter 61 and the hydraulic oil filter 64D, the operator rides on the crawler belt of the traveling body or on the sidewalk, and also uses the small hydraulic excavator. If so, the user can stand on the ground, open the door 51, and pull out the bracket 70 to the outside of the building 5. Therefore, inspection and maintenance such as drainage of water accumulated in the fuel filter 61 and the filter 64D and replacement of the filter element can be efficiently performed with a wide and easy posture.

In the above-described embodiment, the fuel filter and the pilot oil filter have been described. However, the present invention can be applied to a water separator and other auxiliaries. In addition, although an example has been described in which two auxiliary devices are mounted on one door, auxiliary devices that are close to separate doors may be mounted. Furthermore, the hydraulic excavator has been described as an example, but the present invention can also be applied to other construction machines and industrial machines.

[0035]

As described in detail above, an auxiliary device such as a filter is mounted inside an opening / closing door provided in a building such as a construction machine, so that inspection and maintenance can be performed with the door opened. With this configuration, inspection and maintenance can be performed efficiently with a wide and easy posture. In addition, a bracket is provided inside the door and separate from the door, and accessories are attached to the bracket, and the bracket is rotated outside the building so that it can be pulled out. It can be performed efficiently with a proper posture.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an overall configuration of a hydraulic shovel including an embodiment of the present invention.

FIG. 2 is a plan view taken along line II-II of FIG. 1 according to the embodiment of the present invention.

FIG. 3 is a view III of FIG. 2 in one embodiment of the present invention.
FIG.

FIG. 4 is a view showing another embodiment of the present invention, and FIG.
FIG. 2 is a plan view as viewed in the direction of arrows II-II.

FIG. 5 is a view showing another embodiment of the present invention, and FIG.
FIG. 4 is a front view as viewed from an arrow IV in FIG.

FIG. 6 is a perspective view of a swing body of a hydraulic excavator showing a conventional technique.

FIG. 7 is a perspective view of the engine part shown in FIG. 6 showing the prior art.

FIG. 8 is a perspective view showing in detail a portion of the pilot pipe shown in FIG. 6 showing the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running body 1D Track 2 Revolving structure 5 Building 7 Fuel tank 9 Side walk 51 Door 51A Hinge 51B Bracket 51C Screw seat 51D Bolt 61 Fuel filter 61AA, 61BB Hose 64D Filter 64CC, 64EE Hose 70 Bracket 70A Hinge 70B Bracket bolt

Claims (2)

[Claims] 1. A traveling body, a revolving body pivotally mounted on the traveling body, a working machine mounted on the revolving body to be able to move up and down, and a hinge provided on one side of the revolving body. A building rotatably supporting a door provided and opening outward,
In a construction machine composed of equipment such as an engine, a hydraulic pump, a directional control valve and various pipes provided in the building, and auxiliary equipment such as various filters provided in association with the equipment. A construction machine, wherein at least one of the auxiliary devices is mounted inside a door of the building. 2. A traveling body, a revolving body pivotally mounted on the traveling body, a working machine mounted on the revolving body so as to be able to move up and down, and a hinge provided on one side of the revolving body. A building rotatably supporting a door provided and opening outward,
In a construction machine composed of equipment such as an engine, a hydraulic pump, a directional control valve and various pipes provided in the building, and auxiliary equipment such as various filters provided in association with the equipment. At least one of the auxiliaries is attached to a mounting member that is rotatably supported on a support member in the building by a hinge on one side inside the door of the building and is rotatable outside the building. A construction machine.