JP2019203333A - Construction machine - Google Patents

Abstract

To provide a construction machine in which a space necessary to dispose a filter for purifying fuel is secured and fuel supply work is easy.SOLUTION: A hydraulic shovel 1 includes a lower traveling body 2, a revolving superstructure 3, and a filter 71 for purifying fuel to be supplied to a fuel tank that is disposed on the revolving superstructure 3. The hydraulic shovel 1 includes a filter accommodation case 6 and a hinge 82. The filter accommodation case 6 has a body 61 that is attached to a side of the lower traveling body 2 and accommodates the filter 71 inside, and a lid 62 that is openably and closably attached to an upper section of the body 61. The hinge 82 moves the filter accommodation case 6 between a stored position at a side of the lower traveling body 2 within the vehicle width range, and a work position out of the vehicle width range of the lower traveling body 2.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a construction machine provided with a fuel supply device.

  Conventionally, in a swivel type construction machine such as a hydraulic excavator, a fuel tank for storing fuel and a fuel supply device for supplying fuel to the fuel tank are both mounted on an upper swing body. Are known. However, since many devices are arranged on the upper swing body, it is difficult to secure a sufficient space on the upper swing body for arranging the fuel supply device. Therefore, for example, in Patent Document 1, a fuel supply device in which a fuel supply pump and a hose for fuel supply are housed in a storage case to form a unit structure is a narrow space located in front of a fuel tank installed on a swivel frame. Placed in the department.

JP 2002-266377 A

  Depending on the site where a construction machine such as a hydraulic excavator is used, there is a possibility that bad fuel may be used. To cope with this, it is necessary to mount a filter for purifying bad fuel in the fuel supply device. However, in the fuel supply device described in Patent Document 1, it is difficult to secure a sufficiently large space for arranging a filter having a size necessary for purification of poor fuel. In addition, since all the devices constituting the fuel supply device are arranged on the upper revolving structure, the fuel supply operation is performed at a high place and is difficult to work.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a construction machine that facilitates a fuel supply operation while ensuring a space of a size necessary for arranging a filter for purifying fuel.

  In order to achieve the above object, the present invention provides a lower traveling body, an upper revolving body that is pivotably provided above the lower traveling body, and a fuel supplied to a fuel tank disposed on the upper revolving body. And a fuel supply device having a filter for purifying the fuel, and a main body that is attached to a side of the lower traveling body and accommodates the filter therein, and is attached to the upper portion of the main body so as to be openable and closable. A filter housing case having a lid, a storage position where the filter housing case is located on the side of the lower traveling body and included in a vehicle width range, and a vehicle width range of the lower traveling body And a moving mechanism for moving between the outside working positions.

  According to the present invention, it is easy to perform fuel supply work while securing a space of a size necessary for disposing a filter for purifying fuel. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

1 is a perspective view showing an external appearance of a hydraulic excavator according to an embodiment of the present invention. It is a perspective view which shows a lower traveling body. It is a perspective view which shows the filter storage case attached to a raising / lowering apparatus and its inside. It is a figure which expands and shows a filter storage case and its periphery. It is the figure which shows the attachment structure of a filter storage case, and shows in the direction looked up from the downward direction of a lower traveling body. It is a figure which shows the state by which the filter storage case was arrange | positioned in the working position.

  Hereinafter, as one aspect of the construction machine according to the embodiment of the present invention, a wheel-type hydraulic excavator will be described with reference to FIGS.

  FIG. 1 is a perspective view showing an appearance of a hydraulic excavator 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the lower traveling body 2. FIG. 3 is a perspective view showing the filter housing case 6 attached to the lifting device 5R and the inside thereof. FIG. 4 is an enlarged view showing the filter housing case 6 and its periphery. FIG. 5 shows the attachment structure of the filter housing case 6, and is a view shown in a direction looking up from below the lower traveling body 2. FIG. 6 is a diagram illustrating a state in which the filter housing case 6 is disposed at the work position.

  As shown in FIG. 1, the hydraulic excavator 1 includes a lower traveling body 2 for traveling on a road surface, and an upper revolving body 3 which is provided above the lower traveling body 2 so as to be able to swivel via a swivel device. ing.

  As shown in FIG. 2, the lower traveling body 2 includes a chassis frame 20, a pair of left and right front wheels 21 </ b> L and 21 </ b> L and rear wheels 22 </ b> L and 22 </ b> R, and a blade for earth removal work attached to a rear end portion of the chassis frame 20. And a device 23. The hydraulic excavator 1 is a wheel-type hydraulic excavator, and travels when the driving force of a traveling motor is transmitted to a pair of left and right front wheels 21L, 21R and rear wheels 22L, 22R via a propeller shaft and an axle and rotates.

  As shown in FIG. 1, the upper-part turning body 3 includes a turning frame 30, a driver's cab 31 in which an operator is boarded, a counterweight 32 for keeping balance so that the vehicle body does not tilt, and various types of engines, controllers, and the like. It has a machine room 33 in which equipment is housed and a utility room 34 in which tools for maintenance work such as a fuel tank for storing fuel are housed.

  The cab 31 is arranged on the left side of the front part of the revolving frame 30, the utility room 34 is arranged on the right side of the front part of the revolving frame 30, and the counterweight 32 is arranged on the rear part of the revolving frame 30. The machine room 33 is disposed between the cab 31 and the utility room 34 and the counterweight 32. Of the vehicle width direction (left-right direction) of the excavator 1, the left hand side of the operator seated in the driver's seat (not shown) provided in the cab 31 is defined as "left direction", and the right hand side is defined as "right direction". And

  A front work machine 4 for excavating earth and sand is attached between the front center of the swivel frame 30, that is, between the cab 31 and the utility room 34. The front work machine 4 includes a boom 41 that is rotatably attached to the revolving frame 30, a boom cylinder 410 that connects the revolving frame 30 and the boom 41, and an arm that is rotatably attached to the tip of the boom 41. 42, an arm cylinder 420 that connects the boom 41 and the arm 42, a bucket 43 that is rotatably attached to the tip of the arm 42, a bucket cylinder 430 that connects the arm 42 and the bucket 43, and And a plurality of pipes 44 for guiding hydraulic oil to the cylinders 410, 420, and 430.

  The boom 41 is driven by the expansion and contraction of the rod by the boom cylinder 410, and is rotated (elevated) in the vertical direction with respect to the upper swing body 3. The arm 42 is driven by the arm cylinder 420 extending and contracting the rod, and rotates in the front-rear direction with respect to the boom 41. The bucket 43 is driven by the bucket cylinder 430 extending and contracting the rod, and rotates in the front-rear direction with respect to the arm 42.

  The bucket 43 lifts and loads a load such as earth and sand, and lowers the load to a predetermined position. For example, the bucket 43 is changed to an attachment such as a grapple for grasping wood, rocks, waste, or a breaker for excavating a rock. Is also possible. Thereby, the hydraulic excavator 1 can perform various operations including excavation and crushing using an attachment suitable for the work content.

  As shown in FIG. 2, the hydraulic excavator 1 includes a pair of lifting devices 5L and 5R between front wheels 21L and 21R and rear wheels 22L and 22R on the side of the lower traveling body 2 in the vehicle width direction. . The pair of lifting devices 5L and 5R are used when an operator gets into the cab 31 or when a worker performs maintenance work on the vehicle body.

  Each of the pair of lifting devices 5L and 5R includes first to third lifting steps 51 to 53 arranged at intervals in the up and down direction, and a front connecting portion that connects the first to third lifting steps 51 to 53 on the front side. 54A, and a rear connection part 54B that connects the first to third elevating steps 51 to 53 on the rear side. In the present embodiment, each of the pair of lifting devices 5L and 5R has three lifting steps 51 to 53, but the number of steps of the lifting steps is not particularly limited.

  In the following description, of the pair of lifting devices 5L and 5R, the lifting device disposed on the right side of the lower traveling body 2 is referred to as a “right lifting device 5R”, and the lifting device disposed on the left side of the lower traveling body 2 Is referred to as “left lifting device 5L”.

  As shown in FIGS. 1, 2, and 4, a filter housing case 6 formed in a rectangular parallelepiped shape that is elongated in the front-rear direction of the vehicle body is attached to the right elevating device 5 </ b> R. Specifically, as shown in FIG. 5, the filter housing case 6 has bolts (not shown) between the first to third elevating steps 51 to 53 between the chassis frame 20 and the first to third elevating steps 51 to 53. The connection member 610 extends from the rear end portion 61B and is connected to the rear connection portion 54B.

  Further, the filter housing case 6 is attached to the chassis frame 20 on the front side and the rear side. As shown in FIG. 5, the chassis frame 20 extends outward from the right edge surface (on the first to third elevating steps 51 to 53 side), and a pair of extension lines aligned in the front-rear direction of the lower traveling body 2. It has the extension parts 200A and 200B (the front side extension part 200A and the rear side extension part 200B). A locked member 810 to which the latch 81 provided on the connection member 610 described above is locked is fixed to the rear extension 200B.

  The filter housing case 6 is attached to the front extension portion 200A via a hinge 82 at the front end portion 61A, and is detachably attached to the locked member 810 via a latch 81. The hinge 82 includes a shaft portion 820 along the vertical direction of the lower traveling body 2, a first fixing portion 821 fixed to the front end portion 61A of the filter housing case 6, and a second fixing fixed to the front extension portion 200A. Part 822.

  When the latch 81 in the locked state is released, as shown in FIG. 6, the filter housing case 6 attached to the right elevating device 5 </ b> R rotates horizontally around the shaft portion 820 of the hinge 82, and the lower traveling body 2. The vehicle moves from the position between the front wheel 21R and the rear wheel 22R on the right side to the position rotated 90 ° outward and forward.

  As shown in FIG. 3, the filter housing case 6 includes a main body 61 having an upper opening, and a lid 62 attached to the upper portion of the main body 61 through a hinge so as to be opened and closed in the vertical direction. Inside the main body 61, a part of equipment constituting a fuel supply device for supplying fuel to the fuel tank accommodated in the utility chamber 34 is accommodated.

  The fuel supply device includes a fuel pump that sucks fuel from an external tank in which fuel supplied to the fuel tank is stored and discharges the fuel toward the fuel tank, a filter 71 for purifying the fuel, a fuel pump and the filter 71. A connecting hose 72 for connecting, and a connecting hose 73 for connecting the external tank and the filter 71 are provided.

  In the present embodiment, among these devices, the filter 71, the connecting hose 72, and the connecting hose 73 are accommodated in the main body 61 of the filter housing case 6. In the present embodiment, each of the connecting hose 72 and the connecting hose 73 is housed inside the main body 61 with one end fixed to the filter 71 in advance. The fuel pump is accommodated in the utility chamber 34.

  If the filter 71 is housed in the utility chamber 34 together with the fuel pump, it is difficult to secure a space having a size necessary for disposing the filter 71, so the size of the filter 71 must be reduced. However, for example, when using poor fuel, there is a possibility that the problem of insufficient purification occurs.

  However, in the present embodiment, since the filter 71 is accommodated in the filter accommodation case 6, it is possible to secure a space having a size necessary for arranging the filter 71. Thereby, for example, even when poor fuel is used, it is possible to mount the filter 71 having a size necessary for fuel purification on the excavator 1.

  When performing an operation of supplying fuel to the fuel tank, first, an operator releases the latch 81 in the locked state and hinges the right elevating device 5R from the position on the right side of the lower traveling body 2 toward the front outside. It is rotated by 90 ° about the shaft portion 820 of 82.

  Thereby, as shown in FIG. 6, the filter housing case 6 attached to the right elevating device 5R is located on the right side of the lower traveling body 2 from the storage position included in the range of the vehicle width from the lower traveling body 2. Move to a work position that is outside the range of the vehicle width. The hinge 82 is an aspect of a moving mechanism that moves the filter housing case 6 between the storage position and the work position.

  Next, the worker opens the cover 62 of the filter housing case 6 upward, connects the connecting hose 72 accommodated in the main body 61 to the fuel pump accommodated in the utility chamber 34, and connects the connecting hose 73 to the outside. Connect to the tank. Then, by operating the fuel pump, the fuel stored in the external tank is sucked up and discharged to the fuel tank, and the fuel is supplied to the fuel tank.

  Since the filter housing case 6 can be moved from the storage position to the work position in this way, the worker can perform fuel supply work while standing on the ground in a wide place outside the vehicle width direction of the vehicle body. It can be carried out. Thereby, since the worker can perform the fuel supply work in a stable posture, the work becomes easy. Further, since the filter housing case 6 has the lid 62 opened upward, the worker can access the inside of the filter housing case 6 from above, and can work while standing on the ground. Improves.

  Further, although the filter 71 needs to be periodically replaced, it is not housed in the upper swing body 3 at a position higher than the ground, but is housed in the filter housing case 6 at a position relatively close to the ground. Compared to the case where the filter is housed inside the upper swing body 3, the filter can be replaced easily.

  The utility chamber 34 is provided on the side where the filter housing case 6 is disposed in the vehicle width direction (the right side of the upper swing body 3), and all the devices constituting the fuel supply device are gathered on the right side of the vehicle body. Has been placed. This improves the efficiency of the fuel supply operation.

  In the present embodiment, the filter housing case 6 is attached to the right lifting device 5R, and the right lifting device 5R moves together when the filter housing case 6 is moved from the storage position to the working position. The problem that the right elevating device 5R gets in the way when the case 6 is moved is solved.

  Furthermore, in this embodiment, since one end of each of the connection hose 72 and the connection hose 73 is fixed to the filter 71 in advance, the connection between the connection hose 72 and the filter 71 is performed each time fuel is supplied. There is no need to perform the work and the connection work between the connection hose 73 and the filter 71, and the work efficiency is improved.

  The embodiment of the present invention has been described above. In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. In addition, a part of the configuration of the present embodiment can be replaced with the configuration of the other embodiment, and the configuration of the other embodiment can be added to the configuration of the present embodiment. Furthermore, it is possible to add, delete, and replace other configurations for a part of the configuration of the present embodiment.

  For example, in the above embodiment, in the upper swing body 3, the cab 31 is arranged on the left side and the utility room 34 is arranged on the right side with the front work machine 4 interposed therebetween. The positional relationship in the vehicle width direction between 31 and the utility room 34 may be opposite to the left and right. Note that, unlike the present embodiment, when the utility chamber 34 is disposed on the left side of the front portion of the revolving frame 30, it is preferable that the filter housing case 6 is also attached to the left side of the lower traveling body 2.

  In the above embodiment, the hydraulic excavator 1 is a wheel-type hydraulic excavator having a pair of front wheels 21L and 21R and rear wheels 22L and 22R. However, the excavator 1 is not necessarily a wheel-type, and is a crawler-type hydraulic excavator. It may be.

  In the above embodiment, the filter housing case 6 is attached to the chassis frame 20 via the hinge 82 at the front end 61A. However, the present invention is not limited to this, and for example, the chassis frame via the hinge 82 at the rear end 61B. 20 may be attached. That is, the filter housing case 6 may be attached to the chassis frame 20 through the hinge 82 so as to be openable.

  Moreover, in the said embodiment, although the hinge 82 was used as one aspect | mode of a moving mechanism, it is not restricted to this, For example, a rail etc. are used as a moving mechanism so that the filter storage case 6 may be pulled out from a storage position to a working position. It may be moved.

  Moreover, in the said embodiment, although the filter storage case 6 was attached to the chassis frame 20 with the latch 81, it is not restricted to this, For example, you may attach to the chassis frame 20 with the volt | bolt.

  Moreover, in the said embodiment, since the filter storage case 6 was attached to the 1st-3rd raising / lowering steps 51-53, although the raising / lowering apparatus 5R also moved from the storage position to the working position with the filter storage case 6, at least filter accommodation Only the case 6 needs to move from the storage position to the work position.

1: Hydraulic excavator (construction machine)
2: Lower traveling body 3: Upper revolving body 6: Filter housing cases 51-53: First to third lifting steps (multiple lifting steps)
61: Body 62: Lid 71: Filter 72: Connecting hose 73: Connecting hose 82: Hinge (moving mechanism)
820: Shaft

Claims (5)

A lower traveling body, an upper revolving body provided so as to be capable of swiveling above the lower traveling body, and a fuel supply device having a filter for purifying fuel supplied to a fuel tank disposed in the upper revolving body; In construction machinery with
A filter housing case attached to a side of the lower traveling body and having a main body that houses the filter therein, and a lid that is openably and closably attached to an upper portion of the main body;
Movement for moving the filter housing case between a storage position that is on the side of the lower traveling body and is included in the vehicle width range, and a work position that is outside the vehicle width range of the lower traveling body. A construction machine comprising a mechanism. The construction machine according to claim 1,
Elevating step disposed on the side of the lower traveling body,
The filter housing case is attached to the lifting step between the chassis frame of the lower traveling body and the lifting step,
The construction machine, wherein the moving mechanism moves the lifting step together with the filter housing case. The construction machine according to claim 1,
The filter housing case is attached to the chassis frame of the lower traveling body via a hinge having a shaft portion along the vertical direction of the lower traveling body,
The construction machine according to claim 1, wherein the moving mechanism is the hinge that rotates the filter housing case in a horizontal direction around the shaft portion. The construction machine according to claim 1,
A connecting hose for connecting a fuel pump for discharging fuel to the fuel tank and the filter, an external tank storing fuel to be supplied to the fuel tank, and the filter are connected to the inside of the main body. A construction machine, further comprising a connection hose for carrying out the operation. The construction machine according to claim 4,
The construction machine according to claim 1, wherein each of the connecting hose and the connecting hose is housed in the main body in a state in which one end is fixed to the filter in advance.