Work machine

Abstract

To provide a work machine which can arrange a liquid filter and a controller at positions close to each other.SOLUTION: A work machine 100 includes: fuel filters 30a, 30b; a controller 52; a filter bracket 48 interposed between the fuel filters 30a, 30b and the controller 52. Thereby, while allowing the fuel filters 30a, 30b and the controller 52 to be close to each other, the fuel filters 30a, 30b and the controller 52 can be arranged in a space partitioned by the filter bracket 48.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present disclosure relates to a work machine including a fluid filter and a controller. [Background technology]

[0002] Work machines are equipped with various devices that require maintenance, including periodic inspection and replacement. These various devices include, for example, a fuel filter, a fuel pre-filter, and a controller, which is an electronic control device. Patent Document 1 discloses a work machine (construction machine) having a structure in which a main fuel filter and a fuel pre-filter are attached to a support frame via separate brackets. Patent Document 2 discloses a work machine (construction machine) in which a controller is located near the top of a storage box. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-83090 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-31693 [Patent Document 3] Japanese Patent Application Laid-Open No. 2002-88818 [Patent Document 4] Patent No. 6098585 Summary of the Invention [Problem to be solved by the invention]

[0004] In a work machine, from the viewpoint of workability, it is desirable to position the liquid filter and the controller, for example, in close proximity to each other. However, the controller is vulnerable to oil and water, so it is necessary to prevent the controller from being exposed to oil or water. For this reason, it has been necessary to position the liquid filter and the controller in positions distant from each other. However, Patent Documents 3 and 4 do not mention the above problem at all.

[0005] The present disclosure has been made to solve the above-mentioned problems, and has an object to provide a work machine in which a liquid filter and a controller can be disposed in close proximity to each other. [Means for solving the problem]

[0006] A work machine according to a first aspect includes a liquid filter, a controller, and a shielding member interposed between the liquid filter and the controller.

[0007] According to the first aspect, by providing a shielding member interposed between the liquid filter and the controller, the liquid filter and the controller can be placed close to each other and in a space separated by the shielding member.

[0008] In a second aspect, it is desirable that the work machine according to the first aspect further comprises the following feature: That is, the work machine according to the second aspect further comprises a work aisle for an operator, and the work aisle, the liquid filter, the shielding member, and the controller are arranged in one direction in this order, and the liquid filter is attached to the shielding member, and the shielding member is configured to be detachable from the structure to which the shielding member is attached. According to this second aspect, by removing the shielding member from the structure, the liquid filter is removed together with the shielding member, making it possible to inspect and maintain the controller adjacent to the shielding member.

[0009] A third aspect is preferably the work machine according to the second aspect, further comprising the following feature: That is, in the work machine according to the third aspect, the controller is housed in a box-shaped member with one open side, and the shielding member covers the open side of the box-shaped member when attached to the structure. According to this third aspect, because the controller is housed in a space surrounded by the box-shaped member and the shielding member, the effect of preventing the controller from becoming covered in water or oil can be further enhanced. Furthermore, because the shielding member functions as part of the section surrounding the controller, an increase in the number of parts can be suppressed and space can be saved.

[0010] A fourth aspect is preferably the work machine according to the second or third aspect, further comprising the following feature: That is, in the work machine according to the fourth aspect, the structure includes a pair of legs, and the liquid filter is disposed between the pair of legs. According to this fourth aspect, since the liquid filter is disposed between the pair of legs, space can be saved.

[0011] A fifth aspect is preferably the work machine according to the fourth aspect, further comprising the following feature: In other words, in the work machine according to the fifth aspect, the shielding members are connected to the pair of legs, respectively. According to this fifth aspect, connecting the shielding members to the pair of legs, respectively, can increase the rigidity of the pair of legs. In connection with this, the weight of the pair of legs can also be reduced. [Effects of the Invention]

[0012] According to the present disclosure, a work machine can be provided in which the liquid filter and the controller can be disposed in close proximity to each other. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 2 is a perspective view of the work machine as seen from the left front. [Figure 2] FIG. 2 is a perspective view of the upper rotating body of FIG. 1 as seen from the left side. [Figure 3]FIG. 2 is a perspective view of the rear of the upper rotating body as seen from the left front. [Figure 4] FIG. 4 is an enlarged perspective view of a portion of the machine room facing the maintenance passage in FIG. 3. [Figure 5] FIG. 2 is a perspective view showing the structure around the fuel filter. [Figure 6] FIG. 6 is a perspective view of FIG. 5 with the fuel filter, hoses, and the lower plate of the maintenance passage removed. [Figure 7] FIG. 2 is a view of the fuel filter and the stand as seen from the vertical direction. [Figure 8] FIG. 4 is a perspective view of the cover bracket as seen from the opposite side to the fuel filter. [Figure 9] FIG. 9 is a further enlarged perspective view of the upper part of FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0014] [Embodiment Mode] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. FIG. 1 is a perspective view of a work machine 100 according to an embodiment of the present disclosure, as viewed from the left front. The work machine 100 includes a lower traveling body 1 including a traveling device, an upper rotating body 2 supported on the lower traveling body 1 so as to be rotatable relative to the lower traveling body 1, and a work device 3 mounted on the upper rotating body 2. The work device 3 includes, for example, a boom, an arm, and a bucket. The work machine 100 according to this embodiment is a hydraulic excavator, but the work machine in the present disclosure is not limited to hydraulic excavators and may be other work machines such as a crane or a bulldozer. The traveling device may be, for example, a crawler-type traveling device or a traveling device having tires.

[0015] The upper rotating body 2 includes a rotating frame 2a, a cab 11 supported by the rotating frame 2a, and a machine room 12 disposed at the rear of the upper rotating body 2. A counterweight is provided at the rear of the machine room 12.

[0016] The cab 11 is mounted at the front of the revolving frame 2a on the left side in the left-right direction of the revolving frame 2a, and constitutes a driver's cab equipped with operating devices consisting of levers, pedals, etc. for maneuvering to operate the work machine 100. In other words, in response to operations performed by an operator inside the cab 11 via the operating devices, the work machine 100 performs operations such as traveling of the lower traveling body 1, rotation of the upper revolving body 2, and work operation of the work implement 3.

[0017] The machinery room 12 is disposed behind the cab 11. Inside the machinery room 12, an engine (not shown) which is the power source and various devices attached to the engine (for example, a hydraulic circuit device, a radiator, a fuel filter, etc.) are housed.

[0018] The upper rotating body 2 is provided with a maintenance passage 20 (see FIG. 2 ) that is adjacent to the front side of the machine room 12 and extends in the left-right direction of the upper rotating body 2. The maintenance passage 20 is a passage through which workers can inspect and maintain various devices. Under normal conditions, the maintenance passage 20 is hidden by being covered with a cover 22 and a top plate 24. When inspecting or maintaining the various devices, the maintenance passage 20 is exposed by removing the cover 22 and the top plate 24, allowing workers to enter the maintenance passage 20. The maintenance passage 20 is an example of a work passage in the present invention.

[0019] 2 is a perspective view of the upper rotating body 2 as seen from the left side, showing the state in which the above-mentioned cover 22 and top plate 24 have been removed. When the cover 22 and top plate 24 are removed, the maintenance passage 20 is exposed, allowing workers to pass through the maintenance passage 20. The top plate 24 may be configured to be rotatable about its front edge, so that the maintenance passage 20 can be exposed by rotating the top plate 24.

[0020] The maintenance passage 20 is set to a width that allows workers to enter, and extends in the left-right direction from the left side to the right side of the upper rotating body 2. In addition, various devices that require inspection and maintenance are located in the part of the machine room 12 facing the maintenance passage 20.

[0021] FIG. 3 is a perspective view of the rear of the upper rotating body 2 as seen from the left front, illustrating the structure around the machine room 12. Note that FIG. 3 illustrates a state in which the cover 22 and the top plate 24 have been removed, exposing the maintenance passage 20. As shown in FIG. 3, on the left side of the upper rotating body 2, multiple support plates 26 are arranged in a row along the front-to-rear direction. These support plates 26 form a transfer passage 28 along which workers can move. The transfer passage 28 is connected to the maintenance passage 20. The maintenance passage 20 includes multiple lower plates 20a arranged in a row along the left-to-right direction. In the portion of the machine room 12 adjacent to the maintenance passage 20, various devices that require inspection and maintenance are arranged along the maintenance passage 20.

[0022] FIG. 4 is an enlarged perspective view of the area of ​​the machinery compartment 12 adjacent to the maintenance passage 20 in FIG. 3. As shown in FIG. 4, a pair of fuel filters 30a, 30b, a pair of oil filters 32a, 32b, and a pair of fuel pre-filters 34a, 34b are arranged along the maintenance passage 20, starting from the left side (entrance) of the maintenance passage 20. Arranging these various devices along the maintenance passage 20 makes it easy for workers to perform maintenance on these devices. Furthermore, the position of the machinery compartment 12 along the maintenance passage 20 is located away from the alternator and starter of the engine, ensuring safety. Furthermore, an exhaust gas aftertreatment device 36 that purifies exhaust gas emitted from the engine is installed above the machinery compartment 12. The exhaust gas aftertreatment device 36 is supported by a stand 38. The fuel filters 30a, 30b are an example of a liquid filter of the present invention.

[0023] Fig. 5 is a perspective view showing the structure around the pair of fuel filters 30a, 30b. Fig. 5 shows the state in which the decorative panel 37 (see Fig. 4) and the like arranged in front of the mount 38 have been removed. The pair of fuel filters 30a, 30b are arranged adjacent to each other on the left and right along the maintenance passage 20. The pair of fuel filters 30a, 30b are supported by mounts 38 that support the exhaust gas aftertreatment devices 36, respectively. The mounts 38 are an example of the structure of the present invention.

[0024] The pair of fuel filters 30a, 30b are devices that filter out foreign matter such as dust and dirt contained in the fuel. Each fuel filter 30a, 30b is formed in a cylindrical shape and is disposed with the longitudinal direction of the cylindrical shape aligned vertically. In this embodiment, each fuel filter 30a, 30b has the same shape, but each fuel filter 30a, 30b may have a different shape. One end of a hose 39a is connected to the upper end of the fuel filter 30a, and one end of a hose 39b is connected to the upper end of the fuel filter 30b. In addition, a fuel cooler (not shown) may be provided upstream of each fuel filter 30a, 30b, and fuel pre-cooled by the fuel cooler may be supplied to each fuel filter 30a, 30b.

[0025] The platform 38 includes a top plate 40 on which the exhaust gas aftertreatment device 36 is installed, and a pair of left and right legs 42, 44 extending downward from both left and right ends of the top plate 40 on the front side of the top plate 40. The leg 42 is located on the right side of the upper rotating body 2 in the left-right direction, and the leg 44 is located on the left side of the upper rotating body 2 in the left-right direction. A space 46 is formed between the legs 42 and 44, and at least a portion of each fuel filter 30a, 30b is disposed in this space 46. The platform 38 may further include a pair of legs (not shown) behind the top plate 40. The legs 42 and 44 are an example of a pair of legs according to the present invention.

[0026] [About the fuel filter fixing structure] Each fuel filter 30a, 30b is attached to a pair of legs 42, 44 of the mount 38 via a filter bracket 48. That is, the filter bracket 48 is a member that supports each fuel filter 30a, 30b. FIG. 6 is a perspective view showing the pair of fuel filters 30a, 30b, hoses 39a, 39b, and the lower plate 20a that forms the maintenance passage 20 in FIG. 5, with the pair of fuel filters 30a, 30b, hoses 39a, 39b, and the lower plate 20a that forms the maintenance passage 20 removed. FIG. 7 is a vertical view of the fuel filters 30a, 30b, mount 38, and the like, with the top plate 40 of the mount 38 removed. In FIG. 7, the X direction corresponds to the front-to-rear direction of the upper rotating body 2, and the bottom of the page corresponds to the front side. The Y direction corresponds to the left-to-right direction of the upper rotating body 2, and the left side of the page corresponds to the right side of the upper rotating body 2. The Z direction corresponds to the vertical direction. Hereinafter, the front-to-rear direction refers to the front-to-rear direction of the upper rotating body 2, and the left-to-right direction refers to the left-to-right direction of the upper rotating body 2.

[0027] Each fuel filter 30a, 30b is disposed between the leg 42 and the leg 44 in the left-right direction. In this regard, the fuel filters 30a, 30b and the legs 42, 44 at least partially overlap each other when viewed in the left-right direction. Furthermore, at least a portion of each fuel filter 30a, 30b may be disposed rearward of the front surface 42a of the leg 42 and the front surface 44a of the leg 44 in the front-rear direction. For example, as shown in FIG. 7 , substantially the entire fuel filter 30a, 30b may be disposed rearward of the front surface 42a of the leg 42 and the front surface 44a of the leg 44. Alternatively, substantially half of each fuel filter 30a, 30b in the front-rear direction, i.e., a portion rearward of the center of the cylindrical shape of each fuel filter 30a, 30b, may be disposed rearward of the front surface 42a of the leg 42 and the front surface 44a of the leg 44.

[0028] The filter bracket 48 has a shape (tray shape) that is recessed rearward in the front-rear direction so that at least a portion of each fuel filter 30a, 30b is disposed rearward in the front-rear direction of the front surfaces 42a of the legs 42 and the front surfaces 44a of the legs 44. The filter bracket 48 is an example of a shielding member of the present invention.

[0029] The filter bracket 48 includes a bottom plate 48a to which the fuel filters 30a, 30b are attached, a pair of side plates 48b and 48c extending forward from both left and right ends of the bottom plate 48a, and a lower plate 48d extending forward from the lower end. The filter bracket 48 also includes a fixing plate portion 48e bent rightward from the leading edge of the side plate 48b, and a fixing plate portion 48f bent leftward from the leading edge of the side plate 48c. The bottom plate 48a, the pair of side plates 48b, 48c, the lower plate 48d, and the fixing plate portions 48e, 48f of the filter bracket 48 may be formed by bending a single flat plate.

[0030] The bottom plate 48a is a flat plate formed in a generally rectangular shape that extends vertically, and is disposed rearward of the front surfaces 42a of the legs 42 and the front surfaces 44a of the legs 44 in the front-to-rear direction. The fuel filters 30a, 30b are attached to the bottom plate 48a with a plurality of bolts 55. Both left and right ends of the bottom plate 48a are located near the legs 42 and 44 when viewed from the front-to-rear direction. The upper end of the bottom plate 48a is located near the top plate 40 of the frame 38. The lower end of the bottom plate 48a is located below the lower ends of the fuel filters 30a, 30b and near the lower plate 20a of the maintenance passage 20.

[0031] The side plate 48b is formed, for example, by bending a flat plate forward relative to the bottom plate 48a, and stands upright from the right end of the bottom plate 48a toward the front in the front-to-rear direction. The side plate 48b is formed continuously from the upper end to the lower end of the bottom plate 48a in the up-down direction. The front end of the side plate 48b in the front-to-rear direction extends to the same position as the front surface 42a of the leg 42.

[0032] The side plate 48c is formed, for example, by bending a plate forward relative to the bottom plate 48a and extending from the left end of the bottom plate 48a toward the front in the front-to-rear direction. The side plate 48c is formed continuously along the bottom plate 48a from the upper end to the lower end in the up-down direction. The front end of the side plate 48c in the front-to-rear direction extends to the same position as the front surface 44a of the leg 44.

[0033] The lower plate 48d is formed, for example, by bending a flat plate forward relative to the bottom plate 48a and standing upright from the lower end of the bottom plate 48a toward the front in the front-to-rear direction. The lower plate 48d is formed continuously to both left and right ends of the bottom plate 48a in the left-to-right direction. As a result, the right end of the lower plate 48d abuts against the lower end of the side plate 48b, and the left end of the lower plate 48d abuts against the lower end of the side plate 48c.

[0034] The fixing plate portion 48e is formed, for example, by bending a flat plate to the right from the front end of the side plate 48b. The fixing plate portion 48e is formed longitudinally along the leg 42 extending in the vertical direction. The fixing plate portion 48e is formed parallel to the front surface 42a of the leg 42, and is fixed to the leg 42 with three bolts 50 aligned vertically while overlapping the front surface 42a.

[0035] The fixing plate portion 48f is formed by bending a flat plate to the left from the front end of the side plate 48c. The fixing plate portion 48f is formed longitudinally along the leg 44 extending in the vertical direction. The fixing plate portion 48f is formed parallel to the front surface 44a of the leg 44, and is fixed to the leg 44 with three bolts 50 aligned vertically while overlapping the front surface 44a.

[0036] As described above, the fixing plate portion 48e located at the right end of the filter bracket 48 in the left-right direction is connected to the leg 42 with three bolts 50, and the fixing plate portion 48f located at the left end in the left-right direction is connected to the leg 44 with three bolts 50. In this manner, each fuel filter 30a, 30b is attached to the mount 38 via the filter bracket 48. Furthermore, by removing the six bolts 50 on the left and right sides from this state, the filter bracket 48 can be removed together with each fuel filter 30a, 30b from the mount 38. In this state, inspection and maintenance of a device (a controller 52, described below) located behind the filter bracket 48 becomes possible. Furthermore, as shown in FIG. 7 , when viewed vertically, the filter bracket 48 is formed in a generally U-shape that is recessed rearward. This allows at least a portion of each fuel filter 30a, 30b to be located rearward of the front faces 42a of the legs 42 and 44a of the legs 44 in the front-to-rear direction.

[0037] A controller 52, which is an electronic control device, is disposed behind each of the fuel filters 30a, 30b across the filter bracket 48. The controller 52 may be an ECU (engine controller unit) that controls the engine, or may be a main controller that controls the aircraft. The filter bracket 48 is disposed between each of the fuel filters 30a, 30b and the controller 52, thereby separating a space 46 in which each of the fuel filters 30a, 30b is disposed from a space 74 in which the controller 52 is disposed. In addition, in FIG. 7 , a maintenance passage 20 is formed below the pair of fuel filters 30a, 30b. Therefore, the maintenance passage 20, the pair of fuel filters 30a, 30b, the filter bracket 48, and the controller 52 are disposed in line in one direction, in that order from front to rear in the fore-and-aft direction.

[0038] [About the controller's fixed structure] The controller 52 is attached to a cover bracket 54 disposed rearward of the filter bracket 48 in the front-to-rear direction. Figure 8 is a perspective view of the cover bracket 54 as seen from the opposite side of the pair of fuel filters 30a, 30b. Figure 9 is an enlarged perspective view of the upper part of Figure 8.

[0039] The cover bracket 54 is a box-shaped member with an opening on one side facing the bottom plate 48a. Specifically, the cover bracket 54 includes a bottom plate 54a to which the controller 52 is attached, a pair of side plates 54b and 54c extending forward from both left and right ends of the bottom plate 54a, a first top plate 54d extending forward from the upper end of the bottom plate 54a, a second top plate 54e disposed below the first top plate 54d, and a lower plate 54f extending forward from the lower end of the bottom plate 54a. The bottom plate 54a, the pair of side plates 54b and 54c, the first top plate 54d, and the lower plate 54f may be formed by bending a single flat plate. The cover bracket 54 is an example of a box-shaped member of the present invention.

[0040] The bottom plate 54a is a flat plate formed in a generally rectangular shape that extends vertically. The upper end of the bottom plate 54a is located near the top plate 40. The lower end of the bottom plate 54a is located near the lower end of the filter bracket 48. Furthermore, both left and right ends of the bottom plate 54a are located near both left and right ends of the bottom plate 48a of the filter bracket 48. A recess 58 is formed at the upper end of the bottom plate 54a to avoid interference with a pair of beam members 56a, 56b that are formed on the underside of the top plate 40 and extend in the front-to-rear direction.

[0041] The side plate 54b is formed, for example, by bending a flat plate forward relative to the bottom plate 54a and is erected forward from the right end of the bottom plate 54a. The front end of the side plate 54b in the front-to-rear direction extends to the vicinity of the bottom plate 48a of the filter bracket 48. A weatherstrip 60a made of an elastic material such as rubber is interposed between the front end of the side plate 54b and the bottom plate 48a. The weatherstrip 60a is formed longitudinally along the front end of the side plate 54b. The weatherstrip 60a is compressed between the side plate 54b and the bottom plate 48a and elastically deforms, thereby preventing oil and water from entering between the side plate 54b and the bottom plate 48a.

[0042] An opening 62 is formed in the lower portion of the side plate 54b in the vertical direction. The opening 62 is formed to allow a plurality of wires 64a, 64b connected to the controller 52 to pass through. A U-shaped weatherstrip 60b that conforms to the shape of the opening 62 is also attached to the opening 62. The weatherstrip 60b is provided to prevent damage to the wires 64a, 64b due to contact between the edge of the opening 62 and the wires 64a, 64b.

[0043] The side plate 54c is formed, for example, by bending a flat plate forward relative to the bottom plate 54a and extending forward from the left end of the bottom plate 54a. The side plate 54c is formed continuously from the upper end to the lower end of the bottom plate 48a in the up-down direction. The front end of the side plate 54c in the front-to-rear direction extends to a position near the bottom plate 48a of the filter bracket 48. A weatherstrip 60c is interposed between the front end of the side plate 54c and the bottom plate 48a. The weatherstrip 60c is formed longitudinally along the front end of the side plate 54c. The weatherstrip 60c is compressed between the side plate 54c and the bottom plate 48a and elastically deforms, thereby preventing oil and water from entering between the side plate 54c and the bottom plate 48a.

[0044] The first upper plate 54d forms the upper end of the cover bracket 54. The first upper plate 54d is formed, for example, by bending a flat plate forward relative to the bottom plate 54a and standing upright from the upper end of the bottom plate 54a. In this embodiment, the first upper plate 54d is formed from two separate flat plates to avoid interference with the pair of beam members 56a, 56b. The first upper plate 54d is fixed to the top plate 40 of the rack 38 by, for example, three bolts 66 shown in FIG. 9. The left end of the first upper plate 54d abuts against the upper end of the side plate 54c with no gap. Similarly, the right end of the first upper plate 54d abuts against the upper end of the side plate 54b with no gap.

[0045] The second upper plate 54e is positioned below the first upper plate 54d and slightly above the upper end of the controller 52. The second upper plate 54e is erected vertically relative to the bottom plate 54a. The second upper plate 54e abuts the bottom plate 54a and the pair of side plates 54b, 54c without any gaps. The front end of the second upper plate 54e extends to the vicinity of the bottom plate 48a of the filter bracket 48. A weatherstrip 60d is interposed between the front end of the second upper plate 54e and the bottom plate 48a. The weatherstrip 60d is formed longitudinally along the front end of the second upper plate 54e. The weatherstrip 60d is compressed between the second upper plate 54e and the bottom plate 48a and elastically deforms, thereby preventing oil and water from entering between the second upper plate 54e and the bottom plate 48a.

[0046] The lower plate 54f is disposed at the lower end of the cover bracket 54. The lower plate 54f is formed, for example, by bending a flat plate forward relative to the bottom plate 54a and extending forward in the front-to-rear direction from the lower end of the bottom plate 54a. The front end of the lower plate 54f in the front-to-rear direction extends to the vicinity of the bottom plate 48a of the filter bracket 48. A weatherstrip 60e is interposed between the front end of the lower plate 54f and the bottom plate 48a. The weatherstrip 60e is formed longitudinally along the front end of the lower plate 54f. The weatherstrip 60e is compressed between the lower plate 54f and the bottom plate 48a and elastically deforms, thereby preventing oil and water from entering between the lower plate 54f and the bottom plate 48a. The lower plate 54f is also formed continuously from the left end to the right end of the bottom plate 48a in the left-to-right direction. This allows the right end of the lower plate 54f to abut against the lower end of the side plate 54b without any gap. Similarly, the left end of the lower plate 54f and the lower end of the side plate 54c abut against each other without any gap.

[0047] The lower plate 54f is supported by the legs 44 of the stand 38 via an L-shaped angle member 68. Specifically, one end of the L-shape of the angle member 68 is fixed to the leg 44 with a bolt 70, and the other end of the L-shape is fixed to the lower plate 54f with a bolt 72.

[0048] As described above, the first upper plate 54d of the cover bracket 54 is fixed to the top plate 40 of the stand 38 with the bolts 66, and the lower plate 54f is fixed to the legs 44 of the stand 38 via the angle members 68, so that the cover bracket 54 is supported by the stand 38. Furthermore, when the filter bracket 48 is supported by the stand 38, the open side of the cover bracket 54 is covered by the bottom plate 48a. As a result, the controller 52 is housed in a space 74 surrounded by the cover bracket 54 and the filter bracket 48.

[0049] The controller 52 is composed of a first controller 52a and a second controller 52b. The first controller 52a is formed in a rectangular shape with a predetermined thickness. The first controller 52a is disposed in the space 74 adjacent to the second upper plate 54e in the up-down direction and adjacent to the side plate 54b in the left-right direction. That is, the first controller 52a is disposed in the upper right portion of the space 74. The right side of the first controller 52a is directly fixed to the side plate 54b by two bolts 76. The left side of the first controller 52a is fixed to the bottom plate 54a via an L-shaped angle member 78. Specifically, one end of the L-shape of the angle member 78 is fixed to the bottom plate 54a by two bolts 80, and the other end of the L-shape is fixed to the left side of the first controller 52a by a bolt (not shown). The wiring 64a connected to the first controller 52a is routed to the outside of the cover bracket 54 through the opening 62.

[0050] The second controller 52b is disposed diagonally below the first controller 52a, i.e., at the lower left within the space 74. The second controller 52b is formed in a hexagonal shape with a predetermined thickness. The second controller 52b is fixed directly to the bottom plate 54a with two bolts 82. A wiring 64b connected to the second controller 52b passes through the opening 62 and is routed to the outside of the cover bracket 54.

[0051] [Effects, etc.] The pair of fuel filters 30a, 30b and the controller 52 are devices that require periodic inspection and maintenance. Therefore, it is desirable to position these devices close to each other so that an operator can inspect and maintain them in the same location. However, because the controller 52 is prone to malfunction when exposed to oil or water, the fuel filters 30a, 30b and the controller 52 must be located in different spaces, and the controller 52 must be located in a space that is less likely to come into contact with oil or water. In contrast, the fuel filters 30a, 30b and the controller 52 are arranged side by side in the front-to-rear direction, with the filter bracket 48 interposed between them. That is, the fuel filters 30a, 30b and the controller 52 are respectively located in spaces partitioned by the bottom plate 48a. Therefore, the fuel filters 30a, 30b and the controller 52 can be arranged close to each other while being separated by the filter bracket 48.

[0052] Furthermore, the controller 52 is housed in a box-shaped cover bracket 54, and one open surface of the cover bracket 54 is covered by the bottom plate 48a of the filter bracket 48. As a result, the controller 52 is housed in a space 74 surrounded by the cover bracket 54 and the bottom plate 48a, which prevents the controller 52 from becoming covered with oil or water. Furthermore, the bottom plate 48a also serves as a portion of the area surrounding the filter bracket 48 and the controller 52, which prevents an increase in the number of parts and contributes to space savings in the front-to-rear direction.

[0053] Furthermore, because the filter bracket 48 is detachably connected to the legs 42, 44 of the mount 38 by the bolts 50, for example, removing the bolts 50 allows the filter bracket 48 to be removed from the pair of legs 42, 44 together with the pair of fuel filters 30a, 30b. At this time, the space 74 that houses the cover bracket 54 is exposed, making it possible to perform maintenance on the controller 52 housed within the space 74 of the cover bracket 54.

[0054] Furthermore, since the pair of fuel filters 30a, 30b are disposed between the pair of legs 42, 42, arranging them so that they overlap in the front-to-rear direction makes it possible to save space in the front-to-rear direction. Furthermore, workers passing through the maintenance passage 20 are less likely to interfere with the pair of fuel filters 30a, 30b.

[0055] Furthermore, by connecting the fixing plate portion 48e of the filter bracket 48 to the leg 42 and the fixing plate portion 48f to the leg 44, the area between the pair of legs 42, 44 is reinforced by the filter bracket 48, thereby increasing the rigidity of the pair of legs 42, 44. In connection with this, the weight of the pair of legs 42, 44 can also be reduced.

[0056] Furthermore, because the opening 62 is formed below the first controller 52a, even if oil or water enters the space 74 through the opening 62, the oil or water is less likely to reach the first controller 52a. Moreover, because the opening 62 is formed at a position away from the second controller 52b in the left-right direction, even if oil or water enters the space 74 through the opening 62, the oil or water is less likely to reach the second controller 52b.

[0057] Furthermore, if a fuel cooler (not shown) is provided upstream of each fuel filter 30a, 30b, the fuel supplied to each fuel filter 30a, 30b is cooled in advance by the fuel cooler. Furthermore, since the filter bracket 48 is interposed between each fuel filter 30a, 30b and the controller 52, the controller 52 is even less susceptible to the effects of heat.

[0058] [Variations] In the above embodiment, the pair of fuel filters 30a, 30b are arranged rearward of the front surfaces 42a, 44a of the legs 42, 44 in the front-to-rear direction, but this requirement is not necessarily required. That is, the pair of fuel filters 30a, 30b may be arranged forward of the front surfaces 42a, 44a of the legs 42, 44.

[0059] In the above embodiment, the filter bracket 48 is fixed to each of the legs 42, 44 by three bolts 50 on each of the left and right sides, but the number of bolts 50 is not limited to three. For example, one left-right end of the filter bracket 48 may be fixed by two or four or more bolts 50, and the other left-right end of the filter bracket 48 may be fixed by two or four or more bolts 50. Furthermore, the fixing structure between the filter bracket 48 and the legs 42, 44 is not necessarily limited to fixation by the bolts 50. In other words, as long as the filter bracket 48 is configured to be detachable from the legs 42, 44, the structure for fixing the filter bracket 48 to the legs 42, 44 may be changed as appropriate.

[0060] In the above embodiment, the controller 52 is composed of the first controller 52a and the second controller 52b, but the configuration of the controller 52 is not limited to this. For example, the controller 52 may be composed of one controller, or may be composed of three or more controllers.

[0061] In the above embodiment, the right side of the first controller 52a is fixed to the bottom plate 54a via an angle member 78, and the left side is directly fixed to the side plate 54b with a bolt 76. However, the fixing structure of the first controller 52a is not limited to this. For example, the left side of the first controller 52a may be fixed to the bottom plate 54a via an angle member. Furthermore, the upper and lower parts of the first controller 52a in the vertical direction may be fixed to the cover bracket 54. Similarly, the structure for fixing the second controller 52b to the cover bracket 54 is not limited to the above embodiment. For example, the second controller 52b may be fixed to the cover bracket 54 via an angle member or the like.

[0062] In the above embodiment, the bottom plate 48a, the pair of side plates 48b, 48c, the lower plate 48d, and the fixing plate portions 48e, 48f of the filter bracket 48 are formed by bending a single flat plate, but this is not necessarily limited to this. For example, the filter bracket 48 may be formed by connecting multiple flat plates together by welding or the like.

[0063] In the above embodiment, the portions of the cover bracket 54 excluding the second upper plate 54e are integrally formed by bending a single flat plate, but the structure of the cover bracket 54 is not necessarily limited to this. For example, the cover bracket 54 may be formed by connecting a plurality of flat plates together by welding or the like.

[0064] In the above embodiment, the fuel filter is composed of a pair of fuel filters 30a, 30b arranged side by side in the left-right direction, but the configuration of the fuel filter is not limited to this. For example, the fuel filter may be composed of a single filter. Alternatively, the fuel filter may be composed of three or more filters.

[0065] In the above embodiment, the cover bracket 54 includes two upper plates, the first upper plate 54d and the second upper plate 54e, but it does not necessarily have to include two upper plates. For example, one upper plate may be fixed to the top plate 40, and the upper plate may abut against the bottom plate 48a of the filter bracket 48 without any gap via the weatherstrip 60d.

[0066] In the above embodiment, the first upper plate 54d of the cover bracket 54 is fixed to the top plate 40, and the lower plate 54f is fixed to the leg 44 via the angle member 68, but the structure for supporting the cover bracket 54 by the mount 38 is not limited to this. For example, the side plate 54c of the cover bracket 54 may be fixed to the leg 44 via a bracket or the like, and the side plate 54b may be fixed to the leg 42 via a bracket or the like.

[0067] In the above embodiment, the filter bracket 48 serving as a shielding member is interposed between the pair of fuel filters 30a, 30b and the controller 52. However, the present disclosure is not limited to the fuel filters 30a, 30b. For example, the filter bracket 48 may be interposed between the controller 52 and fuel pre-filters 34a, 34b, which are disposed upstream of the fuel filters. Alternatively, the filter bracket 48 may be interposed between the controller 52 and oil filters 32a, 32b, which remove foreign matter contained in engine oil. In other words, the present disclosure can be applied as appropriate to any liquid filter that removes foreign matter contained in liquid.

[0068] In the above embodiment, the thickness of the bottom plate 48a of the filter bracket 48 may be increased so that the controller 52 is less susceptible to the effects of heat from the fuel filters 30a, 30b. Alternatively, a highly insulating member may be attached to the bottom plate 48a. Alternatively, the bottom plate 48a may have an uneven shape so that heat transferred to the filter bracket 48 can easily escape into the air. Alternatively, a member that forms an additional space may be added between the space 46 that houses the fuel filters 30a, 30b and the space 74 in which the controller 52 is used. By forming the above space, the thermal insulation between the fuel filters 30a, 30b and the controller 52 is further improved. [Explanation of symbols]

[0069] 20: Maintenance passage (work passage) 30a, 30b: Fuel filter (liquid filter) 38: Frame (structure) 42, 44: Legs (pair of legs) 48: Filter bracket (shielding member) 52: Controller 54: Cover bracket (box-shaped component) 100:Work machinery

Claims

1. A liquid filter; A controller; a shielding member interposed between the liquid filter and the controller.

2. Further provided with a work aisle for workers, the working passage, the liquid filter, the shielding member, and the controller are arranged in this order along one direction; the liquid filter is attached to the shielding member; The work machine according to claim 1 , wherein the shielding member is configured to be detachable from a structure to which the shielding member is attached.

3. The controller is housed in a box-shaped member having an opening on one side, The work machine according to claim 2 , wherein the shielding member covers the open side of the box-shaped member when attached to the structure.

4. The structure includes a pair of legs; The work machine according to claim 2 or 3, wherein the liquid filter is disposed between the pair of legs.

5. The work machine according to claim 4 , wherein the shielding members are connected to the pair of legs, respectively.

Images