Work machine

Abstract

To provide a work machine for a backhoe and the like improving support strength of a reserve tank.SOLUTION: A work machine is provided with a machine body, a motor mounted on the machine body, peripheral devices arranged at the periphery of the motor, and a bracket for attachment supporting the peripheral devices, wherein the bracket for attachment comprises a base member supporting the peripheral devices adjacent to a drive part drove through driving force of the motor, and a pressing member connected to the base member and holding the peripheral devices by clamping the peripheral devices between the base member and thereof.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a work machine such as a backhoe. [Background technology]

[0002] In the working machine disclosed in Patent Document 1, peripheral devices such as a reserve tank for storing a coolant for the prime mover are arranged around the prime mover. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-85490 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in this type of work machine, a cover body constituting the outer shell of the machine is configured to be openable and closable, and the cover body can be opened to inspect the prime mover, etc. However, if an operator leans on or strongly touches a peripheral device arranged around the prime mover during the inspection, causing the bracket supporting the peripheral device to deform or the peripheral device to fall off the bracket, there is a risk that the operator will inadvertently come into contact with the driving parts, such as a cooling fan, alternator, or power transmission belt, which are driven by the power of the prime mover.

[0005] The present invention has been made to solve such problems, and has an object to improve the supporting strength of peripheral devices. [Means for solving the problem]

[0006] The present invention employs the following technical means to achieve the above object.

[0007] A work machine according to one embodiment of the present invention comprises a body, a prime mover mounted on the body, a peripheral device arranged around the prime mover, and a mounting bracket supporting the peripheral device, the mounting bracket having a base member supporting the peripheral device near a drive unit driven by the power of the prime mover, and a pressing member connected to the base member and holding the peripheral device by clamping it between the base member and the pressing member. Effect of the Invention

[0008] According to the above-described working machine, the peripheral device can be firmly supported by the base member and the pressing member of the mounting bracket. [Brief description of the drawings]

[0009] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] 1 is a left rear perspective view of the fuselage with the cover body partially separated. FIG. [Figure 4] FIG. 2 is a left rear perspective view showing the internal structure of the aircraft. [Diagram 5] FIG. 2 is a rear view showing the internal structure of the aircraft. [Figure 6] FIG. [Figure 7] FIG. 4 is a partial exploded perspective view of the rear space and its surroundings of the support frame. [Figure 8] FIG. 4 is a partial exploded perspective view of the rear space and its surroundings of the support frame. [Figure 9] FIG. 4 is a partially exploded perspective view of the mounting bracket and the reserve tank. [Figure 10] FIG. 4 is a rear view of the mounting bracket and the reserve tank. [Figure 11] FIG. 4 is a rear perspective view of the mounting bracket and the reserve tank. [Figure 12] FIG. 2 is a front perspective view of the mounting bracket and the reserve tank. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] As shown in Figs. 1 and 2, the working machine 1 of this embodiment is a backhoe equipped with a machine body (swivel base) 2, a traveling device 3, and a working device 4. A canopy 5 is mounted on the machine body 2. A driver's seat 6 in which an operator (driver) sits is provided inside the canopy 5. The canopy 5 is a protection mechanism for protecting the driver's seat 6, and has a roof protector 5A and a roof 5B. The working machine 1 is not limited to a backhoe, and may be another type of working machine. Also, the machine body 2 may be equipped with a cabin surrounding the driver's seat 6 instead of the canopy 5 as a protection mechanism for protecting the driver's seat 6.

[0012] In this embodiment, the direction in which the operator seated in the driver's seat 6 faces (the direction of the arrow X1 in Figs. 1 and 2) is the front of the machine body 2, and the opposite direction (the direction of the arrow X2 in Figs. 1 and 2) is the rear of the machine body 2. The left side of the operator (the direction of the arrow Y1 in Fig. 2) is the left side of the machine body 2, and the opposite direction (the direction of the arrow Y2 in Fig. 2) is the right side of the machine body 2. Furthermore, the upper side of the operator (the direction of the arrow Z1 in Figs. 1 and 2) is the top of the machine body 2, and the opposite direction (the direction of the arrow Z2 in Figs. 1 and 2) is the bottom of the machine body 2.

[0013] The traveling device 3 is a crawler type traveling device that supports the machine body 2 so that it can travel, and includes a traveling frame 3A and a traveling mechanism 3B. The traveling frame (track frame) 3A is a structure to which the traveling mechanisms 3B are attached on the left and right sides and supports the machine body 2 from below. The traveling mechanism 3B is, for example, a crawler. The traveling mechanism 3B is driven by a traveling motor M1 provided on the traveling frame 3A. Note that the traveling device 3 is not limited to a crawler type, and may be a wheel type.

[0014] The traveling device 3 is equipped with a dozer device 7. The dozer device 7 is provided at the front of the traveling frame 3A. The dozer device 7 is connected to a dozer cylinder (hydraulic cylinder) provided on the traveling frame 3A, and is raised and lowered by extending and contracting the dozer cylinder.

[0015] The working device 4 has a boom 4A, an arm 4B, and a bucket 4C. Note that, instead of or in addition to the bucket 4C, the working machine 1 can be equipped with another working tool (hydraulic attachment) that can be driven by hydraulic oil. Examples of the other working tool include a hydraulic breaker, a hydraulic crusher, an angle broom, an earth auger, a pallet fork, a sweeper, a mower, and a snow blower.

[0016] The boom 4A is pivotally mounted to a swing bracket 9 provided at the front of the machine body 2 so as to be swingable about a horizontal axis (an axis extending in the left-right direction). The boom 4A is connected to the swing bracket 9 via a boom cylinder (hydraulic cylinder) C1, and is swung about the horizontal axis by extending and contracting the boom cylinder C1. Swinging the boom 4A refers to the operation of raising the boom 4A above the front of the machine body 2 and tilting it forward of the machine body 2.

[0017] The arm 4B is pivotally attached to the tip of the boom 4A so as to be swingable around a horizontal axis (an axis extending in the left-right direction). The arm 4B is connected to the boom 4A via an arm cylinder (hydraulic cylinder) C2, and is swung around the horizontal axis by extending and contracting the arm cylinder C2. The swinging of the arm 4B refers to the operation of moving the tip of the arm 4B closer to the machine body 2 (crowd) or farther away from the machine body 2 (dump).

[0018] The bucket 4C is pivotally attached to the tip of the arm 4B so as to be swingable around a horizontal axis (an axis extending in the left-right direction). The bucket 4C is connected to the arm 4B via a bucket cylinder (hydraulic cylinder) C3, and is swung around the horizontal axis by extending and contracting the bucket cylinder C3. The swinging of the bucket 4C refers to the operation of moving the tip of the bucket 4C closer to (crowd) the machine body 2 or moving it away from (dump) the machine body 2, for example, the operation of scooping up soil and sand with the bucket 4C and dropping (discharging) the scooped soil and sand from the bucket 4C.

[0019] As shown in FIG. 1, the machine body 2 has a swivel base plate 8 that constitutes the bottom of the machine body 2. The swivel base plate 8 is made of a thick plate material, and is supported on the upper part of the traveling device 3 via a swivel bearing 2J. That is, the machine body 2 is supported rotatably about a pivot axis L1 of the swivel bearing 2J relative to the traveling device 3. The swivel axis L1 is the center of rotation of the swivel bearing 2J. The swivel base plate 8 is driven to rotate about the pivot axis L1 by a swivel motor provided on the traveling device 3.

[0020] A support bracket 8J that supports the working device 4 is provided at the front of the swivel base plate 8. The support bracket 8J is provided so as to protrude forward from the front of the machine body 2, and a swing bracket 9 is connected to its tip. The swing bracket 9 is pivotally attached to the tip of the support bracket 8J so as to be swingable about a vertical axis (an axis extending in the up-down direction). The swing bracket 9 is connected to a swing cylinder (hydraulic cylinder) provided on the machine body 2, and is swung about the vertical axis by extending and contracting the swing cylinder.

[0021] As shown in Figs. 1 to 3, a weight 10F is provided at the rear of the swivel base plate 8. The weight 10F is a member for achieving weight balance with the working device 4, and is disposed at the rear of the machine body 2. The weight 10F is formed in a substantially arc shape, and is provided so as to cover the inside of the machine body 2 from the rear. In other words, the weight 10F constitutes a part of the outer cover (cover body) 10 that constitutes the outer shell of the machine body 2.

[0022] Provided on the upper part of the machine body 2 are a driver's seat 6, a travel lever 11, an operation lock lever (unload lever) 12, control levers 13L, 13R, a dozer lever 14, an operation switch 15, and an armrest 16. The travel lever 11 is an operating member for operating the traveling device 3, and is provided in front of the driver's seat 6. The operation lock lever 12 is an operating member for switching the hydraulic actuator mounted on the work machine 1 between an operable state and an inoperable state, and is provided on the left side of the left console unit 17L provided to the left of the driver's seat 6.

[0023] The control levers 13L, 13R are operating members for operating the machine body 2 and the work device 4, and are provided on a left console section 17L provided to the left of the driver's seat 6, and a right console section 17R provided to the right of the driver's seat 6. The dozer lever 14 is an operating member for operating the dozer device 7, and is provided to the right rear of the control lever (right control lever) 13R on the right console section 17R.

[0024] The operation switches 15 are operation members for operating various devices equipped on the work machine 1, and a plurality of operation switches 15 are provided on the right console section 17R behind the dozer lever 14. The armrests 16 are members on which the operator seated in the driver's seat 6 places his / her elbows, and are provided on the left and right console sections 17L, 17R behind the control levers 13L, 13R, respectively.

[0025] As shown in Figures 3 and 4, a support frame 20 is provided inside the aircraft body 2. The aircraft body 2 also carries devices such as a prime mover 21, a hydraulic pump 22, a radiator 23, an oil cooler 24, a reserve tank 25, a battery 26, an isolator 27, and a control device 28. An outer cover (cover body) 10 constituting the outer shell of the aircraft body 2 includes a bonnet 10T that covers the prime mover 21. The support frame 20 supports the bonnet 10T.

[0026] The prime mover 21 in this embodiment is a diesel engine. As shown in Fig. 1 and Fig. 3, the prime mover 21 is disposed in a space (the inner space of the support frame 20) S1 below the driver's seat 6 and inside the support frame 20. Note that the prime mover 21 is not limited to a diesel engine, and may be a gasoline engine, an electric motor, or a hybrid prime mover having an engine and an electric motor.

[0027] The hydraulic pump 22 is a device that is driven by the power of the prime mover 21 and supplies hydraulic oil (pressurized oil) to hydraulic actuators such as hydraulic motors and hydraulic cylinders (swing cylinder, dozer cylinder, boom cylinder C1, arm cylinder C2, bucket cylinder C3) equipped in the work machine 1. As shown in Figures 4 and 5, the hydraulic pump 22 is connected to the right side of the prime mover 21.

[0028] The radiator 23 is a cooler that cools the coolant that is circulated and supplied to the prime mover 21. The oil cooler 24 is a cooler that cools the hydraulic oil that is supplied to the hydraulic actuator. Both the radiator 23 and the oil cooler 24 are disposed in the space S2 to the left of the support frame 20 inside the outer cover 10.

[0029] Reserve tank 25 is a device that stores coolant for motor 21. As shown in Figures 3 and 4, reserve tank 25 is disposed in space S3 behind support frame 20 within outer cover 10. Reserve tank 25 is attached to the rear of support frame 20 via a mounting bracket 29. The mounting structure of reserve tank 25 will be described later.

[0030] The battery 26 is a storage battery that supplies power to electrical equipment, including a work light, a display device, gauges, and a control device 28 (not shown), that are mounted on the work machine 1. The battery 26 is disposed in the space S2 to the left of the support frame 20. The battery 26 is attached to the upper part of the swivel base plate 8 via a battery bracket 30.

[0031] The isolator 27 is a device that supplies electricity generated by the alternator 31 to the battery 26. The isolator 27 is attached to the rear of the support frame 20 via a mounting bracket 29. The mounting structure of the isolator 27 will be described later.

[0032] The control device 28 is an electronic control unit (ECU) that controls the operation of the prime mover 21, the hydraulic pump 22, and the like mounted on the work machine 1. The control device 28 is disposed in the left space S2 of the support frame 20.

[0033] 5, an alternator 31 is provided at the rear of the prime mover 21. The alternator 31 is connected to the drive shaft 21P of the prime mover 21 via a power transmission belt 32, and is rotationally driven by the rotational power of the prime mover 21 to generate electricity to be stored in the battery 26.

[0034] A cooling fan 33 is provided on the left side of the prime mover 21. The cooling fan 33 is connected to the drive shaft 21P of the prime mover 21 via a power transmission belt 32, and is rotationally driven by the rotational power of the prime mover 21 to generate cooling air F1 that cools the prime mover 21 inside the airframe 2.

[0035] Thus, in addition to the prime mover 21, the inside of the airframe 2 is provided with drive units that are driven by the power of the prime mover 21, such as the cooling fan 33, the alternator 31, and the power transmission belt 32. Also, as shown in Figures 3 and 4, peripheral devices such as the reserve tank 25 and the isolator 27 are arranged in the space S3 behind the support frame 20 inside the airframe 2, i.e., around the prime mover 21.

[0036] 2 and 3, the outer cover 10 has a first cover body 10A arranged on the upper part of the body 2 and below the driver's seat 6, a second cover body 10B arranged on the upper side of the rear part of the body 2, a third cover body 10C arranged on the upper side of the left side of the body 2, a fourth cover body 10D arranged on the upper side of the right side of the body 2, a fifth cover body 10E arranged on the lower side of the left side of the body 2, and a weight 10F arranged on the lower side of the rear part of the body 2. Furthermore, although not shown, the outer cover 10 has a sixth cover body arranged on the lower side of the right side of the body 2 and a seventh cover body arranged on the front part of the body 2.

[0037] A bonnet 10T covering the prime mover 21 includes a first cover body 10A, a second cover body 10B, a third cover body 10C, and a fourth cover body 10D. The first cover body 10A, the second cover body 10B, the third cover body 10C, and the fourth cover body 10D are each supported by a support frame 20 (see FIG. 4).

[0038] As shown in Figures 1 and 3, the first cover body 10A is a cover member that covers the front and upper part of the prime mover 21, and is fixed to the left and right front support portions 20A and the rear upper frame 20E (see Figure 4) of the support frame 20 by bolts or the like.

[0039] The second cover body 10B is a cover member that covers the rear of the prime mover 21 (the upper area of ​​the rear space S3 of the support frame 20), and its right edge is connected and supported by a hinge mechanism to the right rear support column 20B of the support frame 20 (see FIG. 4). That is, the second cover body 10B is pivotally connected to the right rear support column 20B of the support frame 20 so as to be swingable about a vertical axis (an axis extending in the vertical direction). The isolator 27 and the reserve tank 25 are disposed inside (forward) the second cover body 10B. Therefore, by swinging the second cover body 10B to the outside (rear) of the machine body 2 to open it, an operator can access the reserve tank 25, the isolator 27, and the prime mover 21, the alternator 31, the power transmission belt 32, and the like, which are disposed in the rear space S3 of the support frame 20, and which are disposed in the inner space S1 of the support frame 20, from the rear of the machine body 2.

[0040] The third cover body 10C is a cover member that covers the left side of the prime mover 21 (the upper area of ​​the left space S2 of the support frame 20), and its front edge is connected and supported by a hinge mechanism to the left front support column 20A (see FIG. 4) of the support frame 20. That is, the third cover body 10C is pivotally connected to the left front support column 20A of the support frame 20 so as to be swingable about a vertical axis (an axis extending in the vertical direction). The radiator 23 and the oil cooler 24 are disposed inside (to the right) of the third cover body 10C. The battery 26 is disposed inside and below (to the right and below) the third cover body 10C. Therefore, by swinging the third cover body 10C to the outside (to the left) of the machine body 2 to open it, the operator can access the radiator 23, the oil cooler 24, the battery 26, and the like that are disposed in the left space S2 of the support frame 20 from the left side of the machine body 2.

[0041] The third cover body 10C has a first outside air intake 41. The first outside air intake 41 is an air supply port for taking outside air into the interior of the body 2. The first outside air intake 41 is covered with a breathable member such as punched metal, expanded metal, or wire mesh.

[0042] The fourth cover body 10D is a cover member which covers the right side of the prime mover 21, and is fixed by bolts or the like to a side cover 10R (see Figure 1) which is erected on the front right side of the driver's seat 6 (to the right of the feet of the operator seated in the driver's seat 6) on the upper part of the body 2.

[0043] 5, the fourth cover body 10D has an exhaust port 42. The exhaust port 42 discharges outside air (cooling air F1) taken into the interior of the body 2 to the outside. Similar to the first outside air intake 41 of the third cover body 10C, the exhaust port 42 is covered with a breathable member such as punched metal, expanded metal, or wire mesh.

[0044] 1 and 3, the fifth cover body 10E is a cover member that covers the left side of the prime mover 21 (the lower area of ​​the left space S2 of the support frame 20), and is fixed by a bracket member 8C (see FIG. 5) erected on the left side of the swivel base plate 8 and by bolts or the like to the lower part of the swivel base plate 8. The battery 26 and the control device 28 are disposed inside (to the right) of the fifth cover body 10E.

[0045] 6, the support frame 20 is erected on the swivel base plate 8. The support frame 20 has a front support portion 20A, a rear support portion 20B, an upper side frame 20C, a front upper frame 20D, a rear upper frame 20E, a front mounting plate 20F, and a rear mounting plate 20G.

[0046] The front support portions 20A extend vertically in front of the motor 21 and are arranged in a pair with a gap in the left-right direction. The rear support portions 20B extend vertically behind the motor 21 and are arranged in a pair with a gap in the left-right direction.

[0047] The upper side frames 20C are formed to extend rearward from the upper portions of the left and right front support pillars 20A. The upper side frames 20C are formed integrally with the front support pillars 20A. The rear portions of the left and right upper side frames 20C are connected and fixed to the upper portions of the rear support pillars 20B disposed behind them.

[0048] The front upper frame 20D is provided between the upper parts of the left and right front support parts 20A and connects these upper parts and the front parts of the left and right upper side frames 20C. The rear upper frame 20E is provided between the upper parts of the left and right rear support parts 20B and connects these upper parts and the rear parts of the left and right upper side frames 20C.

[0049] The front mounting plate 20F is provided across the lower portions of the left and right front support columns 20A and connects the lower portions together. The front mounting plate 20F is fixed by bolts or the like to the upper portion of a partition wall 8A erected on the swivel base plate 8. That is, the front support column 20A is erected on the upper portion of the partition wall 8A. The partition wall 8A is erected in front of the prime mover 21 on the swivel base plate 8 and separates the inner space S1 of the support frame 20 from the space S4 in front of the support frame 20.

[0050] The rear mounting plate 20G is fixed by bolts or the like to the upper parts of a pair of left and right bracket members 8B erected on the swivel base plate 8. That is, the rear support portion 20B is erected on the upper parts of the pair of bracket members 8B.

[0051] In this manner, the support frame 20 is a structure having four support pillars 20A, 20B standing on the upper part of the swivel base plate 8, and a plurality of frame parts 20C, 20D, 20E connecting the support pillars 20A, 20B approximately horizontally. Note that the support frame 20 is not limited to the configuration of this embodiment, and can be appropriately changed according to the arrangement, size, etc. of each device mounted on the machine body 2.

[0052] 7 and 8, a partition member 44 and a mounting bracket 29 are provided on the left rear support portion 20B of the support frame 20. The partition member 44 extends from the upper part to the lower part of the left rear support portion 20B and is provided so as to protrude leftward from the left rear support portion 20B, separating the left space S2 of the support frame 20 from the rear space S3.

[0053] A seal member 45 is provided on the outer edge of the partition member 44. The seal member 45 contacts along the inner side surface of the outer cover 10 (third cover body 10C). As a result, the partition member 44 and the seal member 45 prevent the outside air (cooling air F1) taken into the inside of the body 2 by the cooling fan 33 from flowing from the left space S2 of the support frame 20 to the rear space S3.

[0054] The mounting bracket 29 is fixed to the rear of the left rear support portion 20B of the support frame 20, and supports the reserve tank 25 and the isolator 27 in the rear space S3 of the support frame 20. That is, the mounting bracket 29 supports the reserve tank 25 and the isolator 27 in the rear vicinity of the drive parts such as the cooling fan 33, the alternator 31, and the power transmission belt 32, which are provided in a position shifted to the left of the inner space S1 of the support frame 20.

[0055] As shown in Figs. 8 to 12, the mounting bracket 29 has a base member 61, a pressing member 62, a connecting bolt (connecting member) 63, a push nut (fall-off prevention device) 64, and a hooking portion 65. The base member 61 is fixed to the rear support portion 20B on the left side of the support frame 20 by a bolt or the like, and supports the reserve tank 25 and the isolator 27 in the vicinity of the drive portion (see Fig. 7). The pressing member 62 is connected to the base member 61 and holds the reserve tank 25 between the base member 61 and the connecting bolt 63. The connecting bolt 63 is screwed to the base member 61, and detachably connects the pressing member 62 to the base member 61. The push nut 64 is fitted onto the bolt shaft of the connecting bolt 63 from the axial direction with the pressing member 62 sandwiched therebetween, and prevents the connecting bolt 63 from falling off the pressing member 62. The engaging portion 65 is provided at a connecting portion between the base member 61 and the pressing member 62 , and removably engages the pressing member 62 with the base member 61 .

[0056] 5 and 7, the base member 61 is disposed at a position overlapping a part or the whole of the driving parts such as the cooling fan 33, the alternator 31, and the power transmission belt 32 when viewed from the rear of the machine body 2. This prevents an operator from accidentally touching the driving parts.

[0057] 10 to 12, the base member 61 has a fixed frame portion 71, a first connecting frame portion 72, a lower frame portion 73, and a holder portion 74. The fixed frame portion 71 is formed in a plate shape that is long in the vertical direction, and is fixed to the rear support portion 20B with its front portion facing the rear surface portion of the rear support portion 20B.

[0058] 9 to 12, the fixed frame 71 has a notch 71A. The notch 71A is formed in a substantially semicircular arc shape that opens upward at the upper end of the fixed frame 71. The isolator 27 is fixed to the fixed frame 71 by bolts or the like in a state where it is inserted into the notch 71A from above. In this manner, the isolator 27 is attached to the upper part of the fixed frame 71, i.e., to the upper part of the mounting bracket 29 (see FIG. 8).

[0059] The first connecting frame portion 72 is connected to the second connecting frame portion 77 of the pressing member 62 by a connecting bolt 63. The first connecting frame portion 72 is formed in a columnar shape that is long in the vertical direction, and extends along the right edge portion of the fixed frame portion 71. The first connecting frame portion 72 is formed in a columnar shape having at least two side surfaces. In this embodiment, the first connecting frame portion 72 has two side surfaces, a first side surface portion 72A and a second side surface portion 72B. In other words, the first connecting frame portion 72 is formed in an L shape when viewed from above.

[0060] The first side surface portion 72A is formed by bending rearward from the right edge of the fixed frame portion 71. The second side surface portion 72B is formed by bending rightward from the rear edge of the first side surface portion 72A. That is, the second side surface portion 72B is provided on the right rear side of the right edge of the fixed frame portion 71. The reserve tank 25 is disposed next to and to the right of the first connecting frame portion 72. In other words, the first connecting frame portion 72 extends along the gap S8 between the rear support portion 20B (support frame 20) and the reserve tank 25 (see FIGS. 9 to 11).

[0061] 9 and 12, the first side surface portion 72A has a hook pin 65A. The hook pin 65A protrudes from a position near the upper end of the first side surface portion 72A, and when the pressing member 62 is connected to the base member 61, a hook portion 65B of the pressing member 62 is hooked onto the hook pin 65A.

[0062] As shown in FIG. 12, the second side portion 72B has a bolt hole 75 and a window hole 76. The bolt hole 75 is provided at a substantially central position between the top and bottom of the second side portion 72B. The connecting bolt 63 is screwed into the bolt hole 75 from the rear. The window hole 76 is a cutout formed in the upper half of the right edge of the second side portion 72B, and connects the inner space S1 of the support frame 20 to the rear space S3 of the support frame 20. That is, the window hole 76 is an opening for making the drive parts such as the power transmission belt 32 in the inner space S1 of the support frame 20 visible from the rear of the aircraft body 2. Note that the window hole 76 may be a through hole provided through the second side portion 72B as long as the drive parts such as the power transmission belt 32 can be visible from the rear of the aircraft body 2.

[0063] As shown in Figures 10 to 12, the lower frame 73 is formed in a plate shape long in the left-right direction, and extends rightward from the lower end of the first connecting frame 72 with its flat surface facing up and down. The holder 74 is erected at a position near the right end on the upper surface of the lower frame 73. The reserve tank 25 is formed in a bottomed cylindrical shape having a liquid supply port 25F on the upper surface 25A, and is supported by the lower frame 73 from below. In other words, the lower frame 73 is disposed facing the bottom surface 25B of the reserve tank 25, and supports the reserve tank 25 from below.

[0064] A neck portion 25G is provided between the upper surface portion 25A and the liquid supply port portion 25F of the reserve tank 25. The neck portion 25G is formed in a generally cylindrical shape that protrudes upward from the upper surface portion 25A of the reserve tank 25, and the liquid supply port portion 25F is provided at its upper end portion. The liquid supply port portion 25F is formed in a generally circular plate shape with a larger diameter than the neck portion 25G.

[0065] The holder section 74 has a holder post 74A, an insertion piece 74B, and a rib 74C. The holder post 74A is formed in a columnar shape that is long in the vertical direction, and is provided extending upward from the upper surface of the lower frame section 73. The insertion piece 74B is formed in a substantially trapezoidal plate shape, and is connected to the upper end of the holder post 74A with its flat surface facing the front-rear direction. The rib 74C is a plate-like member that is provided extending upward from the upper surface of the lower frame section 73, and its side edge portion is connected to the plate surface of the holder post 74A to reinforce the holder post 74A.

[0066] As shown in FIG. 11, the holder portion 74 is inserted into the insertion groove 25S provided in the front portion 25C of the reserve tank 25. The reserve tank 25 is supported on the upper surface portion of the lower frame portion 73 by inserting the insertion piece 74B of the holder portion 74 into the insertion groove 25S of the front portion 25C. In this manner, the reserve tank 25 is attached to the right portion of the mounting bracket 29 (to the right of the left rear support portion 20B) and is disposed at a position overlapping with the alternator 31 when viewed from the rear of the machine body 2 (see FIGS. 5 and 7). This prevents an operator from accidentally coming into contact with the alternator 31 and other drive parts (the cooling fan 33, the power transmission belt 32, etc.).

[0067] 5 and 7, the pressing member 62 is disposed at a position overlapping with the driving parts such as the cooling fan 33, the alternator 31, and the power transmission belt 32 when viewed from the rear of the machine body 2. This prevents an operator from accidentally contacting the driving parts. In this manner, the mounting bracket 29 has both the function of supporting the reserve tank 25 inside the machine body 2 and the function of preventing an operator from accidentally contacting the driving parts such as the power transmission belt 32.

[0068] 9 to 12, the pressing member 62 has a second connecting frame portion 77 and an upper frame portion 78. The second connecting frame portion 77 is connected to the first connecting frame portion 72 of the base member 61 by connecting bolts 63.

[0069] The second connecting frame portion 77 is formed in a columnar shape that is long in the vertical direction, and is provided overlapping the first connecting frame portion 72. That is, the second connecting frame portion 77 is formed in a columnar shape that extends along the first connecting frame portion 72. The second connecting frame portion 77 is formed in a columnar shape having at least two side surfaces. In this embodiment, the second connecting frame portion 77 has two side surfaces, a third side surface portion 77A and a fourth side surface portion 77B. That is, the second connecting frame portion 77 is formed in an L shape when viewed from above.

[0070] The third side surface portion 77A is disposed to the right of the first connecting frame portion 72 and generally parallel to the first side surface portion 72A when the pressing member 62 is connected to the base member 61. The fourth side surface portion 77B is formed by bending the rear edge portion of the third side surface portion 77A to the left. When the pressing member 62 is connected to the base member 61, the fourth side surface portion 77B is disposed overlapping the rear surface portion of the first connecting frame portion 72 (second side surface portion 72B) from the rear.

[0071] The fourth side surface portion 77B has a bolt insertion hole 79. The bolt insertion hole 79 is provided at a position near the lower end of the fourth side surface portion 77B. The connecting bolt 63 is screwed into a bolt hole 75 provided in the first connecting frame portion 72 of the base member 61 through the bolt insertion hole 79. As a result, the first connecting frame portion 72 of the base member 61 and the second connecting frame portion 77 of the pressing member 62 are fixed in a state in which they are overlapped in the front and rear. In this way, the first connecting frame portion 72 and the second connecting frame portion 77 are connected by the connecting bolt 63 to the right of the fixing frame portion 71 to form a substantially rectangular columnar frame body consisting of a left side surface portion (first side surface portion 72A), a rear surface portion (second side surface portion 72B, fourth side surface portion 77B), and a right side surface portion (third side surface portion 77A).

[0072] At this time, the fourth side surface portion 77B of the second connecting frame portion 77 covers the window hole 76 provided in the first connecting frame portion 72 from the rear of the support frame 20. That is, the pressing member 62 has the fourth side surface portion 77B which serves as a lid portion capable of covering the window hole 76 provided in the first connecting frame portion 72. Therefore, when the pressing member 62 is removed from the base member 61, the driving parts such as the power transmission belt 32 can be viewed through the window hole 76.

[0073] The connecting bolt 63 in this embodiment is a hexagonal bolt. Therefore, when removing the holding member 62 from the base member 61, it is necessary to remove the connecting bolt 63 using a tool such as a wrench. As a result, even if an excessive force is applied to the holding member 62 from the outside, the holding member 62 will not easily come off from the base member 61. Also, the connecting bolt 63 is held in a state attached to the holding member 62 by the push nut 64. Therefore, when the holding member 62 is removed from the base member 61, there is no risk of the connecting bolt 63 dropping into or out of the machine body 2. Note that, as long as the connecting bolt 63 can be prevented from dropping into or out of the machine body 2 when the holding member 62 is removed from the base member 61, other fall prevention devices (various fall prevention washers, fall prevention screws, etc.) may be used instead of the push nut 64 to hold the holding member 62 or the base member 61 in a fall-preventing state.

[0074] As shown in Figs. 10 to 12, the upper frame portion 78 is formed in a plate shape long in the left-right direction, and extends rightward from the upper end of the second connecting frame portion 77 with the flat portion facing up and down. The upper frame portion 78 is disposed facing the upper surface portion 25A of the reserve tank 25, and holds the reserve tank 25 from above. In this way, the reserve tank 25 is sandwiched and held from above and below by the lower frame portion 73 and the upper frame portion 78. In this way, the reserve tank 25 is supported by the mounting bracket 29 with at least the rear surface portion 25D not covered. This allows the operator to clearly see the amount of coolant stored in the reserve tank 25 from the rear of the machine body 2.

[0075] As shown in Figs. 9 and 12, the upper frame portion 78 has a hook portion 65B and a notch portion 78A. The hook portion 65B is provided on a bent piece 78B that is bent downward from the left edge of the upper frame portion 78. The hook portion 65B is formed in a substantially U-shape that opens forward at the left edge of the upper frame portion 78, and is engaged with the engagement pin 65A of the base member 61 from the rear when the pressing member 62 is connected to the base member 61. This prevents the pressing member 62 from moving in the vertical direction. The engagement portion 65 includes the engagement pin 65A and the hook portion 65B.

[0076] The cutout portion 78A is formed in a generally quarter-circular arc shape that opens to the right rear at the right end portion of the upper frame portion 78, and is inserted into the neck portion 25G of the reserve tank 25 in a state in which the pressing member 62 is connected to the base member 61. That is, the upper frame portion 78 is disposed facing the periphery of the neck portion 25G on the upper surface portion 25A of the reserve tank 25, and holds the reserve tank 25 from above.

[0077] With the above-described configuration, the mounting bracket 29 has sufficient rigidity to prevent plastic deformation even when the reserve tank 25 is pressed from each direction, such as above, rear, left and right sides, with a force of a predetermined value or less (for example, 250 N or less), and has a holding force that prevents the reserve tank 25 from falling off the base member 61.

[0078] In the above embodiment, the mounting bracket 29 is provided at the rear of the support frame 20, but the mounting bracket 29 may be provided at the side of the support frame 20 as long as it is possible to support peripheral devices such as the reserve tank 25 near the driving parts such as the power transmission belt 32.

[0079] Further, in the above embodiment, the mounting bracket 29 is configured to support the reserve tank 25 and the isolator 27, but it may be configured to support only one of the reserve tank 25 or the isolator 27, or it may support peripheral devices such as a fuel pump, a fuel filter, a fuse box, a battery, etc., arranged around the prime mover 21.

[0080] In addition, in the above embodiment, the driving parts such as the cooling fan 33, the alternator 31, the power transmission belt 32, etc. are provided in a position toward the left of the inner space S1 of the support frame 20, but the above driving parts may be provided in a position toward the right of the inner space S1 of the support frame 20, or may be provided in a position toward the rear in the center between the left and right of the inner space S1 of the support frame 20.

[0081] <Effects> Thus, the work machine 1 of the above embodiment comprises a body 2, a prime mover 21 mounted on the body 2, peripheral equipment arranged around the prime mover 21, and a mounting bracket 29 supporting the peripheral equipment, and the mounting bracket 29 has a base member 61 that supports the peripheral equipment near a drive unit driven by the power of the prime mover 21, and a pressing member 62 that is connected to the base member 61 and holds the peripheral equipment by clamping it between the base member 61 and the base member 61.

[0082] According to this configuration, the peripheral device can be firmly supported by the base member 61 and the pressing member 62 of the mounting bracket 29. In addition, since the peripheral device is firmly supported in the vicinity of the drive unit, it is possible to reliably prevent an operator from accidentally touching the drive unit during inspection.

[0083] The base member 61 also has a first connecting frame portion 72 which serves as a connecting portion for the pressing member 62, and the first connecting frame portion 72 is formed in a columnar shape extending in the up-down direction of the body 2.

[0084] According to this configuration, the force applied to the peripheral device from above and below can be received by the first connecting frame portion 72 extending in the up-down direction of the body 2, further improving the supporting strength of the peripheral device.

[0085] Furthermore, the work machine 1 of the above embodiment comprises a cover body 10 that forms the outer shell of the body 2, and a support frame 20 that is erected inside the body 2 and supports the cover body 10, and the first connecting frame portion 72 extends along the gap S8 between the support frame 20 and the peripheral equipment.

[0086] According to this configuration, the first connecting frame portion 72 serves as a blocking wall for the gap S8 between the support frame 20 and the peripheral device, so that it is possible to more reliably prevent an operator from accidentally touching the drive unit during inspection.

[0087] In addition, the pressing member 62 has a second connecting frame portion 77 connected to the first connecting frame portion 72 , and the second connecting frame portion 77 is formed in a columnar shape extending along the first connecting frame portion 72 .

[0088] With this configuration, forces applied to the peripheral equipment from above and below can be received by the first connecting frame portion 72 and the second connecting frame portion 77 extending in the above and below direction of the body 2, thereby further improving the supporting strength of the peripheral equipment.

[0089] Further, the pressing member 62 has a second connecting frame portion 77 which serves as a connecting portion for the base member 61, and the second connecting frame portion 77 is formed in a columnar shape extending in the up-down direction of the body 2.

[0090] According to this configuration, the force applied to the peripheral device from above and below can be received by the second connecting frame portion 77 extending in the vertical direction of the body 2, further improving the supporting strength of the peripheral device.

[0091] In addition, the base member 61 has a lower frame portion 73 that supports the peripheral device from below, and the pressing member 62 has an upper frame portion 78 that holds the peripheral device from above.

[0092] According to this configuration, the peripheral device can be held in the vertical direction by the lower frame portion 73 of the base member 61 and the upper frame portion 78 of the pressing member 62, so that the supporting strength for the peripheral device is further improved.

[0093] The base member 61 further comprises a first connecting frame portion 72 which is long in the vertical direction and is columnar and made of a plate-like member having a first side portion 72A and a second side portion 72B which are formed in an L-shape when viewed from above, and a lower frame portion 73 which extends laterally from the lower part of the first connecting frame portion 72 so that its plate surface faces in the vertical direction. The holding member 62 further comprises a second connecting frame portion 77 which is long in the vertical direction and is made of a plate-like member having a third side portion 77A and a fourth side portion 77B which are formed in an L-shape when viewed from above, and an upper frame portion 78 which extends laterally from the upper part of the second connecting frame portion 77 so that its plate surface faces in the vertical direction. The peripheral device is held in a state where it is sandwiched from above and below between the lower frame portion 73 and the upper frame portion 78.

[0094] With this configuration, forces applied to the peripheral device from above and below can be received by the first connecting frame portion 72, which is L-shaped when viewed from above and has a vertically long column shape provided on the base member 61, the lower frame portion 73 extending from the lower part of the first connecting frame portion 72, the second connecting frame portion 77, which is L-shaped when viewed from above and has a vertically long column shape provided on the pressing member 62, and the upper frame portion 78 extending from the upper part of the second connecting frame portion 77, thereby further improving the support strength of the peripheral device.

[0095] In addition, the base member 61 further includes a holder portion 74 extending upward from the lower frame portion 73, and the peripheral device is held in a state in which it is sandwiched from above and below between the lower frame portion 73 and the upper frame portion 78, and the surface facing the drive unit is supported by the holder portion 74.

[0096] According to this configuration, the peripheral device is held in the vertical direction by the lower frame portion 73 of the base member 61 and the upper frame portion 78 of the pressing member 62, and the holder portion 74 of the lower frame portion 73 can support the surface of the peripheral device facing the drive unit, thereby further improving the support strength of the peripheral device.

[0097] In addition, holder portion 74 includes a holder post 74A extending upward from lower frame portion 73 and an insertion piece 74B connected to holder post 74A, and the peripheral device includes an insertion groove 25S on the surface facing the drive unit, and the surface facing the drive unit of the peripheral device is supported by holder portion 74 by inserting insertion piece 74B into insertion groove 25S.

[0098] According to this configuration, the peripheral device can be inserted and held in the insertion groove 25S by the insertion piece 74B provided on the holder support 74A of the lower frame portion 73, so that the supporting strength of the peripheral device is further improved.

[0099] Additionally, the upper frame portion 78 has a cutout portion 78A formed in a substantially arcuate shape, and the peripheral device has a neck portion 25G that protrudes upward, and the neck portion 25G is fitted into the cutout portion 78A.

[0100] According to this configuration, the neck portion 25G of the peripheral device can be inserted and held by the notch portion 78A of the upper frame portion 78, so that the supporting strength of the peripheral device is further improved.

[0101] Further, the base member 61 and the pressing member 62 are disposed at positions overlapping a part or the whole of the drive unit when viewed from the rear of the machine body 2.

[0102] According to this configuration, it is possible to reliably prevent an operator from accidentally coming into contact with the drive unit when performing inspection work at the rear of the machine body 2.

[0103] In addition, the base member 61 has a window hole 76 that allows the drive unit to be viewed from the rear of the fuselage 2.

[0104] According to this configuration, the area around the drive unit can be visually observed from the rear of the machine body 2 through the window hole 76 without removing the peripheral device from the mounting bracket 29, improving workability during inspection.

[0105] The mounting bracket 29 also has a connecting member 63 that detachably connects the pressing member 62 to the base member 61, and the pressing member 62 has a lid portion 77B that can cover the window hole .

[0106] According to this configuration, the area around the drive unit can be visually observed through the window hole 76 from the rear of the body 2 by removing the retaining member 62 from the base member 61 without removing the peripheral device from the mounting bracket 29, improving workability during inspection.

[0107] The mounting bracket 29 also has an engagement portion 65 for removably engaging the pressing member 62 with the base member 61 .

[0108] According to this configuration, the pressing member 62 is connected to the base member 61 at multiple points by the connecting members 63 and the hooking portions 65, so that the peripheral device can be more firmly supported by the mounting bracket 29. This more reliably prevents the worker from accidentally coming into contact with the drive unit during inspection.

[0109] The peripheral device is a reserve tank 25 formed in a bottomed cylindrical shape having a liquid supply port 25F on an upper surface 25A and for storing a cooling liquid for the prime mover 21, with the lower frame portion 73 extending along the bottom surface 25B of the peripheral device and the upper frame portion 78 extending along the upper surface 25A of the peripheral device.

[0110] Reserve tank 25 is relatively large due to its role of storing coolant for motor 21, and is likely to be leaned upon or come into strong contact with by an operator during inspection. However, with the above-described configuration, reserve tank (peripheral device) 25 is held from above and below by lower frame portion 73 of base member 61 and upper frame portion 78 of pressing member 62, so that the support strength of reserve tank (peripheral device) 25 is further improved.

[0111] Although the present invention has been described above, the embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present invention is indicated by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

[0112] In addition, in the above-described embodiment, an example was described in which the present invention is applied to a work machine such as a backhoe, but the application of the present invention is not limited to this, and the present invention may be applied to other construction machines such as a wheel loader, a compact track loader, and a skid steer loader, and may be applied to agricultural machines such as a tractor, a combine harvester, a rice transplanter, and a lawn mower. [Explanation of symbols]

[0113] 1 Work equipment 2. Aircraft 3 Running gear 4 Work equipment 10 Outer cover (cover body) 20 Support frame 21 Prime Mover 25 Reserve tank (peripheral device) 29 Mounting bracket 31 Alternator (drive unit) 32 Power transmission belt (drive section) 33 Cooling fan (drive unit) 61 Base material 62 Holding member 63 Connecting bolt (connecting member) 64 Push Nut 65 Engagement part 71 Fixed frame 72 First connecting frame part 73 Lower frame part 74 Holder part 76 Window Hole 77 Second connecting frame part 77B 4th side part (lid part) 78 Upper frame part S8 gap

Claims

1. The aircraft and A prime mover mounted on the airframe; A peripheral device disposed around the prime mover; a mounting bracket for supporting the peripheral device; The mounting bracket is a work machine having a base member that supports the peripheral device near a drive unit that is driven by the power of the prime mover, and a pressing member that is connected to the base member and holds the peripheral device by sandwiching it between the base member and the pressing member.

2. The base member has a first connecting frame portion that serves as a connecting portion of the pressing member, The work machine according to claim 1 , wherein the first connecting frame portion is formed in a columnar shape extending in the up-down direction of the machine body.

3. A cover body that constitutes an outer shell of the aircraft; a support frame that is erected inside the airframe and supports the cover body, The work machine according to claim 2 , wherein the first connecting frame portion extends along a gap between the support frame and the peripheral device.

4. The pressing member has a second connecting frame portion connected to the first connecting frame portion, The work machine according to claim 2 , wherein the second connecting frame portion is formed in a columnar shape extending along the first connecting frame portion.

5. The pressing member has a second connecting frame portion that serves as a connecting portion of the base member, The work machine according to claim 1 , wherein the second connecting frame portion is formed in a columnar shape extending in the up-down direction of the machine body.

6. the base member has a lower frame portion that supports the peripheral device from below, 2. The work machine according to claim 1, wherein the pressing member has an upper frame portion that holds the peripheral device from above.

7. The base member is a first connecting frame portion having a columnar shape that is long in the vertical direction and is made of a plate-like member having a first side portion and a second side portion that are formed in an L-shape when viewed from above; A lower frame portion extending laterally from a lower portion of the first connecting frame portion so that a plate surface faces in the up-down direction, The pressing member is a second connecting frame portion having a columnar shape that is long in the vertical direction and is made of a plate-like member having a third side portion and a fourth side portion that are formed in an L-shape when viewed from above; An upper frame portion extending laterally from an upper portion of the second connecting frame portion so that a plate surface faces in the up-down direction, The work machine according to claim 1 , wherein the peripheral device is held in a state where it is sandwiched from above and below between the lower frame portion and the upper frame portion.

8. The base member further includes a holder portion extending upward from the lower frame portion, The work machine according to claim 7 , wherein the peripheral device is sandwiched between the lower frame portion and the upper frame portion from above and below, and is held in a state in which a surface of the peripheral device facing the drive portion is supported by the holder portion.

9. The holder portion includes a holder support extending upward from the lower frame portion and an insertion piece connected to the holder support, The peripheral device has an insertion groove on a surface facing the driving unit, The work machine according to claim 8, wherein the surface of the peripheral device facing the drive unit is supported by the holder portion by inserting the insertion piece into the insertion groove.

10. The upper frame portion has a notch formed in a substantially arcuate shape, The peripheral device has a neck portion protruding upward, 9. The work machine according to claim 8, wherein the neck portion is inserted into the notch portion.

11. The work machine according to claim 1 , wherein the base member and the pressing member are disposed at positions overlapping a part or all of the drive unit when viewed from the rear of the machine body.

12. The work machine according to claim 11, wherein the base member has a window hole through which the drive unit can be viewed from the rear of the machine body.

13. 13. The work machine according to claim 12, wherein the mounting bracket has a connecting member that detachably connects the pressing member to the base member.

14. The work machine according to claim 13, wherein the mounting bracket has an engagement portion for removably engaging the pressing member with the base member.

15. the peripheral device is a reserve tank formed in a bottomed cylindrical shape having a liquid supply port on an upper surface thereof and configured to store a coolant for the engine; The lower frame portion extends along a bottom surface of the reserve tank, 7. The work machine according to claim 6, wherein the upper frame portion extends along an upper surface of the reserve tank.

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