Work machine and method for fixing cover member

Abstract

To provide a dust-prevention cover configured of a base member and a resin cover member.SOLUTION: A combine 1 includes a dust-prevention cover 20 for covering a side part of a machine body 10. The dust-prevention cover 20 includes a base member 30 and a resin cover member 40. The base member 30 includes a base panel 31 having a first face 31a and a second face 31b, and a first fixing part 32. The cover member 40 includes an external panel 41 facing the second face 31b, a side panel 42, and a second fixing part 43. The first fixing part 32 has a first fixing face 33 for fixing the second fixing part 43. The second fixing part 43 has a second fixing face 44 facing the first fixing face 33. The side panel 42 includes a curved part 42a having a curved shape. In the curved face 42a, the second fixing face 44 is provided apart from an inner face 42d of the side panel 42, and a vertical line L2 of the second fixing face 44 is perpendicular to a vertical line L0 of the first face 31a.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a method for fixing a working machine and a cover member.

Background Art

[0002] For example, as shown in Patent Document 1, a working machine provided with a dust cover that covers the side portion of the machine body is known. The working machine is a combine. In a conventional working machine, the dust cover includes a base member attached to a frame constituting the machine body and a cover member constituting an outer surface. In a conventional working machine, both the base member and the cover member are made of metal and are generally manufactured by methods such as press working and spot welding. When both the base member and the cover member are made of metal, the cover member can be easily fixed to the base member by appropriately providing metal stays (fixing members) on both members.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, in order to reduce the weight of the dust cover, suppress rust generated on the dust cover, and improve the designability of the combine, etc., changing the cover member to resin has been considered. However, it has been difficult to provide a metal stay as in the conventional case for a resin cover member. For this reason, when the cover member is made of resin, it has been difficult to fix the cover member to the base member in the same manner as in the conventional case.

[0005] An object of the present disclosure is to provide a dust cover composed of a base member and a resin cover member.

Means for Solving the Problem

[0006] The working machine of the present disclosure includes a dust-proof cover that covers the side portion of the machine body. The dust-proof cover includes a base member attached to a machine body frame constituting the machine body, and a resin cover member fixed to the base member. The base member includes a base plate having a first surface facing the machine body frame and a second surface formed on the back side of the first surface, and a first fixing portion provided on the second surface side of the base plate. The cover member includes an outer plate facing the second surface, a side plate extending from the outer plate toward the base member side, and a second fixing portion provided on the side plate. The first fixing portion has a first fixing surface for fixing the second fixing portion, and the second fixing portion has a second fixing surface facing the first fixing surface. A perpendicular line of the second fixing surface is orthogonal to a perpendicular line of the first surface. The side plate includes a curved portion having a curved shape when viewed from a direction orthogonal to the first surface. In the curved portion, the second fixing surface is provided spaced apart from the inner surface of the side plate.

Advantages of the Invention

[0007] According to the present disclosure, it is possible to provide a dust-proof cover constituted by a base member and a resin cover member.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0009] <Summary of Embodiments of the Present Disclosure> Hereinafter, a summary of embodiments of the invention of the present disclosure will be listed and described. (1) The working machine of the present disclosure includes a dust-proof cover that covers the side portion of the machine body. The dust-proof cover includes a base member attached to a machine body frame constituting the machine body, and a resin cover member fixed to the base member. The base member includes a base plate having a first surface facing the machine body frame and a second surface formed on the back side of the first surface, and a first fixing portion provided on the second surface side of the base plate. The cover member includes an outer plate facing the second surface, a side plate extending from the outer plate toward the base plate side, and a second fixing portion provided on the inner surface side of the side plate. The first fixing portion has a first fixing surface for fixing the second fixing portion, and the second fixing portion has a second fixing surface facing the first fixing surface. The side plate includes a curved portion having a curved shape when viewed from a direction orthogonal to the first surface. In the curved portion, the second fixing surface is provided spaced apart from the inner surface of the side plate, and a perpendicular line of the second fixing surface is orthogonal to a perpendicular line of the first surface.

[0010] According to the above configuration, a dust-proof cover constituted by the base member and the resin cover member can be provided.

[0011] (2) In the working machine according to the form of (1) above, the side plate further includes a straight portion having a straight shape when viewed from a direction orthogonal to the first surface. In the straight portion, it is preferable that the second fixing surface is the inner surface of the side plate. According to the above configuration, for the curved portion and the straight portion, the cover member can be fixed to the base member by an operation in a direction orthogonal to the thickness direction of the dust cover. Thereby, for substantially the entire dust cover, it becomes possible to fix the resin cover member to the base member by an operation in a direction orthogonal to the thickness direction of the dust cover. Thereby, the assembly work of the dust cover can be facilitated.

[0012] (3) In the working machine according to the form of (1) or (2) above, in the curved portion, it is preferable that the second fixing portion is provided to extend in a direction orthogonal to the first surface. According to the above configuration, the second fixing portion can be given a function as a reinforcing rib. Thereby, the rigidity of the resin cover member can be increased. Thereby, for the resin cover member, it becomes possible to fix it to the base member.

[0013] (4) In the working machine according to the forms of (1) to (3) above, it is preferable that the curved portion further includes an opening formed at a position facing the first fixing portion. According to the above configuration, for the curved portion, it becomes possible to fix the resin cover member to the base member by an operation from the outer side in the circumferential direction. Thereby, the assembly work of the dust cover becomes easy.

[0014] (5) In the working machine according to the form of (4) above, it is preferable that the dust cover further includes a sealing member for sealing the opening. According to the above configuration, for the dust cover with the cover member made of resin, the aesthetics can be ensured.

[0015] (6) In the working machine according to the forms of (1) to (5) above, it is preferable that the perpendicular to the first fixing surface is orthogonal to the perpendicular to the first surface. According to the above configuration, a dust cover composed of a base member and a resin cover member can be provided.

[0016] (7) In the working machine according to the forms (1) to (6) above, the dust cover further includes a fixing member for fixing the second fixing portion to the first fixing portion, and the fixing member is preferably a fastening member for fastening the first fixing portion and the second fixing portion. According to the above configuration, the base member and the resin cover member can be easily fixed by the fastening member.

[0017] (8) The method for fixing the cover member of the present disclosure is a method for fixing the cover member to the base member in a dust cover including a base member including a base plate having a first surface and a second surface formed on the back side of the first surface, and a resin cover member including an outer plate facing the second surface and a side plate extending from the outer plate toward the base plate side. The method for fixing the cover member of the present disclosure includes providing a first fixing portion on the second surface side of the base plate, providing a second fixing portion on the inner surface side of the side plate, providing a first fixing surface for fixing the second fixing portion in the first fixing portion, providing a second fixing surface facing the first fixing surface in the second fixing portion, in the curved portion, making the perpendicular line of the second fixing surface orthogonal to the perpendicular line of the first surface and separating the second fixing surface from the inner surface of the side plate, and fixing the second fixing portion to the first fixing portion.

[0018] According to the above configuration, a dust cover composed of a base member and a resin cover member can be provided.

[0019] (9) In the method for fixing the cover member according to the form (8) above, it is preferable to fix the second fixing portion to the first fixing portion with the inner surface of the side plate as the second fixing surface in the straight portion. According to the above configuration, for the curved portion and the straight portion, the cover member can be fixed to the base member by an operation from a direction orthogonal to the thickness direction of the dust cover. Thereby, for substantially the entire dust cover, it becomes possible to fix the resin cover member to the base member by an operation from a direction orthogonal to the thickness direction of the dust cover. Thereby, the assembly work of the dust cover can be facilitated.

[0020] (10) In the case of the method for fixing the cover member according to the form of (8) or (9) above, it is preferable that in the curved portion, the second fixing portion is provided so as to extend in a direction orthogonal to the first surface. According to the above configuration, the second fixing portion can be made to have a function as a reinforcing rib, and thereby, the rigidity of the resin cover member can be improved. Thereby, it becomes possible to fix the resin cover member to the base member.

[0021] (11) In the case of the method for fixing the cover member according to the forms of (8) to (10) above, it is preferable that in the curved portion, the first fixing portion and the second fixing portion are fastened by a fastening member in a direction orthogonal to the perpendicular to the first surface. According to the above configuration, the base member and the resin cover member can be easily fixed by a fastening member.

[0022] (12) In the case of the method for fixing the cover member according to the forms of (8) to (11) above, it is preferable that in the straight portion, the first fixing portion and the second fixing portion are fastened by a fastening member in a direction orthogonal to the perpendicular to the first surface. According to the above configuration, the base member and the resin cover member can be easily fixed by a fastening member.

[0023] <Details of Embodiments of the Invention of the Present Disclosure> Hereinafter, with reference to the drawings, details of embodiments of the present disclosure will be described. Note that at least a part of the embodiments described below may be arbitrarily combined.

[0024] 〔Overall Configuration of Combine〕 FIG. 1 is a right side view showing a working machine according to an embodiment of the present disclosure. FIG. 1 shows a combine (working machine) 1 according to an embodiment of the working machine of the present disclosure. The combine 1 shown in FIG. 1 is a working machine for harvesting rice, wheat, etc. As shown in FIG. 1, the combine 1 includes a machine body 10, a traveling device 12, a cutting device 13, a threshing device 14, a grain tank 15, an auger 16, a straw processing device 17, and an operation unit 18.

[0025] In the following description, based on the operator seated in the operation unit 18, the direction toward the front side of the operator is referred to as the front of the machine body 10, and the direction toward the rear side is referred to as the rear. Also, in the following description, the direction toward the left side of the operator seated in the operation unit 18 is referred to as the left side of the machine body 10, and the direction toward the right side is referred to as the right side of the machine body 10. Note that the left-right direction of the machine body 10 is also referred to as the width direction. Furthermore, in the following description, the direction toward the upper side of the operator is referred to as the upper side of the machine body 10, and the direction toward the lower side is referred to as the lower side. The up-down direction of the machine body 10 is orthogonal to the front-rear direction and the left-right direction. Note that the up-down direction of the machine body 10 is also referred to as the height direction.

[0026] The machine body 10 includes a machine body frame 11 that constitutes the skeleton. The traveling device 12 includes a pair of left and right crawlers 12a, 12b. The operation unit 18 includes a cabin 19 disposed on the right front side of the machine body 10. The cabin 19 includes a door 19a provided on the right side surface.

[0027] In the combine 1, the grain straw cut by the cutting device 13 is conveyed to the threshing device 14 for threshing, and the threshed grains are stored in the grain tank 15. In the combine 1, the straw after threshing is delivered to the straw processing device 17. The straw delivered to the straw processing device 17 is cut by a cutter part (not shown) and discharged from the lower part of the straw processing device 17 to the outside (field) of the machine body 10. The grains stored in the grain tank 15 are discharged outside the machine via the auger 16.

[0028] 〔Regarding the engine room〕 FIG. 2 is a partially enlarged right side view showing the internal structure of a working machine according to an embodiment of the present disclosure. As shown in FIGS. 1 and 2, the combine 1 includes an engine room ER below and rearward of the operator's cab 18 in the machine body 10. The engine room ER is a space surrounded by the machine frame 11 on the upper, front, and lower sides. Note that the rear of the engine room ER is open toward the grain tank 15. At the right end of the engine room ER, the machine frame 11 has an opening 11a.

[0029] The combine 1 includes an engine E housed in the engine room ER. The combine 1 further includes a radiator C for cooling the engine E and a fan F for sending cooling air to the radiator C in the engine room ER. The fan F is disposed between the engine E and the radiator C. By driving the fan F, outside air is introduced into the engine room ER through the opening 11a, and the radiator C and the engine E are cooled. The cooling air after cooling the radiator C and the like is exhausted to the outside from the rear side of the engine room ER.

[0030] The combine 1 further includes a dust cover 20 that covers the right side surface of the machine body 10 behind the door 19a. The dust cover 20 covers the opening 11a at the right end of the engine room ER. The dust cover 20 of the present embodiment constitutes a part of the right side portion of the machine body 10.

[0031] The dust cover 20 has an opening 21 with a dust screen 22 stretched thereacross. The dust cover 20 allows ventilation to the engine room ER through the opening 21 and prevents dust from entering the engine room ER by means of the dust screen 22. In other words, the dust cover 20 allows the air introduced into the engine room ER from the opening 11a to pass through and removes the dust contained in the air.

[0032] 〔Regarding the dust cover〕 FIG. 3 is a right side view (outer view) showing the dust cover. FIG. 4 is a left side view (inner view) showing the dust cover. FIG. 5 is an exploded perspective view of the dust cover as viewed from the right rear side. FIG. 6 is an exploded perspective view of the dust cover as viewed from the left rear side. As shown in FIGS. 3 to 6, the dust cover 20 is composed of a base member 30 and a cover member 40. The base member 30 is made of metal, and the cover member 40 is made of resin. In the dust cover 20, the base member 30 is attached to the body frame 11, and the cover member 40 is fixed to the base member 30. The dust cover 20 has a thickness in the left-right direction of the body 10. The dust cover 20 has a hollow shape with a space between the base member 30 and the cover member 40 in the thickness direction.

[0033] The base member 30 includes a base plate 31 and a first fixing portion 32. The base plate 31 is composed of a metal plate material. The base plate 31 has a first surface 31a facing the engine room ER (body frame 11) and a second surface 31b formed on the back side of the first surface 31a. The base plate 31 has an opening 31c penetrating the base plate 31 in the plate thickness direction. The first fixing portion 32 is provided on the second surface 31b side of the base plate 31. The first fixing portion 32 is a metal stay and is provided by a method such as press working or spot welding. The first fixing portion 32 has a first fixing surface 33 to which the cover member 40 (a second fixing portion 43 described later) is fixed.

[0034] The base member 30 is disposed at the right end portion of the body frame 11 constituting the engine room ER and is supported by the body frame 11. The base member 30 is rotatably supported with respect to the body frame 11 via a rotation axis 23 in the front-rear direction of the body 10. The dust cover 20 is configured to be swingable around the rotation axis 23. When the dust cover 20 is swung outward, the right side of the engine room ER is opened. The thickness direction of the dust cover 20 coincides with the direction orthogonal to the first surface 31a.

[0035] The cover member 40 includes an outer plate 41, a side plate 42, and a second fixing portion 43. The cover member 40 is made of resin and is created by an existing resin molding method (for example, injection molding). In the cover member 40, the outer plate 41, the side plate 42, and the second fixing portion 43 are integrally molded. The cover member 40 is disposed on the right side lateral side of the base member 30 attached to the body frame 11. The cover member 40 is fixed to the base member 30.

[0036] The outer plate 41 faces the second surface 31b of the base plate 31. The outer plate 41 constitutes the outermost right side of the body 10. The outer plate 41 includes an opening 41a that penetrates the outer plate 41 in the plate thickness direction. The opening 41a constitutes the opening 21 in the dust cover 20. The side plate 42 is provided to extend from the peripheral edge of the outer plate 41 toward the base plate 31. The second fixing portion 43 is provided inside the side plate 42. The second fixing portion 43 has a second fixing surface 44 to which the base member 30 is fixed. The second fixing surface 44 faces the first fixing surface 33.

[0037] 〔Regarding the detailed configuration of the cover member〕 FIG. 7 is a schematic diagram showing the fixing status of the first fixing portion and the second fixing portion in the curved portion. FIG. 8 is a cross-sectional arrow view taken along line A-A in FIG. 7. FIG. 9 is a schematic diagram showing the fixing status of the first fixing portion and the second fixing portion in the straight portion. As shown in FIGS. 3 to 6, the side plate 42 includes a curved portion 42a having a curved shape and a straight portion 42b having a straight shape when viewed from the direction orthogonal to the first surface 31a (the thickness direction of the dust cover 20).

[0038] As shown in FIGS. 7 and 8, the second fixing portion 43 in the curved portion 42a has a second fixing surface 44 at a position separated from the inner surface 42d of the side plate 42. As shown in FIG. 8, in the curved portion 42a, the perpendicular line L2 of the second fixing surface 44 is orthogonal to the perpendicular line L0 of the first surface 31a. With such a configuration, the dust cover 20 fixes the side plate 42 in the curved portion 42a to the linear first fixing portion 32.

[0039] As shown in FIG. 7, the second fixing portion 43 in the curved portion 42a has a substantially U-shaped form when viewed from a direction orthogonal to the first surface 31a. As shown in FIG. 8, the second fixing portion 43 in the curved portion 42a is provided to extend from the outer plate 41 toward the base plate 31 and connects the outer plate 41 and the side plate 42. The second fixing portion 43 having such a rib-like form functions as a fixing portion for fixing the cover member 40 to the base member 30 and also functions to increase the rigidity of the curved portion 42a of the cover member 40.

[0040] As shown in FIG. 9, the second fixing portion 43 in the straight portion 42b is the side plate 42. The second fixing surface 44 in the straight portion 42b is the inner surface 42d of the side plate 42. Note that the second fixing surface 44 in the straight portion 42b may be provided at a position separated from the inner surface 42d, similarly to the second fixing portion 43 in the curved portion 42a. As shown in FIG. 9, in the straight portion 42b, a perpendicular line L2 of the second fixing surface 44 is orthogonal to a perpendicular line L0 of the first surface 31a. With such a configuration, the dust cover 20 fixes the side plate 42 in the straight portion 42b to the linear first fixing portion 32.

[0041] As shown in FIGS. 7 to 9, the dust cover 20 further includes a fixing member 50 that fixes the first fixing portion 32 and the second fixing portion 43. In the dust cover 20 of the present disclosure, the fixing member 50 is composed of a bolt 51 and a nut 52. The nut 52 is provided on the first fixing portion 32 by welding. Note that the fixing member 50 shown in the present embodiment is composed of a bolt and a nut, but the fixing member constituting the dust cover of the present disclosure is not limited thereto, and for example, an adhesive may be used.

[0042] As shown in FIG. 8, the side plate 42 in the curved portion 42a has an opening 42c. The opening 42c is provided at a position facing the first fixing portion 32. The opening 42c is provided at a position facing the second fixing portion 43. The opening 42c enables the bolt 51 for fixing the first fixing portion 32 and the second fixing portion 43 in the curved portion 42a to be inserted inside the cover member 40 (side plate 42).

[0043] The dust cover 20 further includes a sealing member 45 that seals the opening 42c. The sealing member 45 is a resin plate and has an area larger than the opening area of the opening 42c. The sealing member 45 of the present embodiment is attached to the side plate 42 around the opening 42c by an adhesive member (double-sided tape). By sealing the opening 42c with the sealing member 45, the dust cover 20 ensures its aesthetic appearance.

[0044] (Regarding the fixing method of the cover member to the base member) As shown in FIGS. 7 and 8, in the curved portion 42a, the second fixing portion 43 is fixed to the first fixing portion 32 by a fixing member 50. The second fixing portion 43 in the curved portion 42a includes a notch portion 43a at the end on the base member 30 side. The notch portion 43a functions as a hole (bolt hole) for inserting the bolt 51 in the second fixing portion 43. Since the end on the base member 30 side of the notch portion 43a which is a bolt hole is open, the cover member 40 can be attached to and detached from the base member 30 by simply loosening the bolt 51 without completely removing it from the notch portion 43a.

[0045] In a state where the cover member 40 is fixed to the base member 30, the perpendicular line L2 of the second fixing surface 44 in the curved portion 42a is perpendicular to the perpendicular line L0 of the first surface 31a. In other words, the first fixing portion 32 and the second fixing portion 43 are fixed to each other with the perpendicular line L2 of the second fixing surface 44 perpendicular to the perpendicular line L0 of the first surface 31a. At this time, the perpendicular line L1 of the first fixing surface 33 fixed to the second fixing surface 44 is perpendicular to the perpendicular line L0 of the first surface 31a. With such a configuration, it is possible to fix the dust cover 20 provided with the resin cover member 40 having the curved portion 42a to the base member 30.

[0046] As shown in Fig. 9, in the straight portion 42b, the second fixing portion 43 is fixed to the first fixing portion 32 by a fixing member 50. The second fixing portion 43 in the straight portion 42b is provided with a notch portion 43b at the end on the base member 30 side. The notch portion 43b functions as a hole (bolt hole) for inserting the bolt 51 in the second fixing portion 43. Since the end on the base member 30 side of the notch portion 43b, which is a bolt hole, is open, the cover member 40 can be attached to and detached from the base member 30 simply by loosening the bolt 51 without completely removing it from the notch portion 43b.

[0047] In a state where the cover member 40 is fixed to the base member 30, a perpendicular line L2 to the second fixing surface 44 in the straight portion 42b is orthogonal to a perpendicular line L0 to the first surface 31a. At this time, a perpendicular line L1 to the first fixing surface 33 fixed to the second fixing surface 44 is orthogonal to the perpendicular line L0 to the first surface 31a. With such a configuration, the fixing directions by the fixing member 50 in the curved portion 42a and the straight portion 42b can be aligned in a direction orthogonal to the thickness direction of the dust cover 20. Therefore, the workability of the operation of fixing the cover member 40 to the base member 30 can be improved.

[0048] (Regarding the method of attaching the dust screen) Fig. 10 is a perspective view showing the fixing state of the dust screen in the cover member. As shown in Fig. 10, the cover member 40 includes a column 41b protruding from the outer plate 41. The column 41b supports a dust screen 22 that covers the opening 21 of the dust cover 20. The dust screen 22 is supported by the cover member 40 by inserting the column 41b through a hole (not shown) opened corresponding to the arrangement of the column 41b. After the column 41b is inserted through the hole (not shown), a washer-shaped fastener 46 is fitted onto the column 41b, and the dust screen 22 is fixed to the cover member 40. With such a configuration, the dust screen 22 can be quickly attached to the cover member 40. Also, with such a configuration, the dust screen 22 can be easily replaced.

[0049] [Regarding the operation and effects of this embodiment] (1) The combine 1 of the above embodiment includes a dust-proof cover 20 that covers the side portion of the machine body 10. The dust-proof cover 20 includes a base member 30 attached to the machine body frame 11 that constitutes the machine body 10, and a resin cover member 40 fixed to the base member 30. The base member 30 includes a base plate 31 having a first surface 31a facing the machine body frame 11 and a second surface 31b formed on the back side of the first surface 31a, and a first fixing portion 32 provided on the second surface 31b side of the base plate 31. The cover member 40 includes an outer plate 41 facing the second surface 31b, a side plate 42 extending from the outer plate 41 toward the base plate 31 side, and a second fixing portion 43 provided on the inner surface 42d side of the side plate 42. The first fixing portion 32 has a first fixing surface 33 for fixing the second fixing portion 43, and the second fixing portion 43 has a second fixing surface 44 facing the first fixing surface 33. The side plate 42 includes a curved portion 42a having a curved shape when viewed in a direction orthogonal to the first surface 31a. In the curved portion 42a, the second fixing surface 44 is provided spaced apart from the inner surface 42d of the side plate 42, and a perpendicular line L2 of the second fixing surface 44 is orthogonal to a perpendicular line L0 of the first surface 31a.

[0050] According to the above configuration, it is possible to provide a combine 1 including a dust-proof cover 20 constituted by the base member 30 and the resin cover member 40. In other words, according to the above configuration, with respect to the dust-proof cover 20 including the base member 30 and the cover member 40, the cover member 40 can be made of resin and fixed to the base member 30.

[0051] (2) In the combine 1 of the above embodiment, the side plate 42 further includes a straight portion 42b having a straight shape when viewed in a direction orthogonal to the first surface 31a. In the straight portion 42b, the second fixing surface 44 is the inner surface 42d of the side plate 42. According to the combine harvester 1 of the present embodiment, with respect to the curved portion 42a and the straight portion 42b, the cover member 40 can be fixed to the base member 30 by working from a direction orthogonal to the thickness direction of the dustproof cover 20. Thereby, with respect to substantially the entire dustproof cover 20, the resin cover member 40 can be fixed to the base member 30 by working from a direction orthogonal to the thickness direction of the dustproof cover 20. Thereby, the assembly work of the dustproof cover 20 can be facilitated.

[0052] (3) In the curved portion 42a of the combine harvester 1 of the above embodiment, the second fixing portion 43 is provided so as to extend in a direction orthogonal to the first surface 31a. According to the combine harvester 1 of the present embodiment, the second fixing portion 43 can be given a function as a reinforcing rib. Thereby, the rigidity of the resin cover member 40 can be increased. Thereby, the resin cover member 40 can be fixed to the base member 30.

[0053] (4) In the combine harvester 1 of the above embodiment, the curved portion 42a further includes an opening 42c formed at a position facing the first fixing portion 32. According to the combine harvester 1 of the present embodiment, with respect to the curved portion 42a, the resin cover member 40 can be fixed to the base member 30 by working from the outer side in the circumferential direction. Thereby, the assembly work of the dustproof cover 20 becomes easy.

[0054] (5) In the combine harvester 1 of the above embodiment, the dustproof cover 20 further includes a sealing member 45 for sealing the opening 42c. According to the combine harvester 1 of the present embodiment, the appearance can be ensured for the dustproof cover 20 having the cover member 40 made of resin.

[0055] (6) In the combine harvester 1 of the above embodiment, the perpendicular line L1 of the first fixing surface 33 is orthogonal to the perpendicular line L0 of the first surface 31a. According to the configuration of the above embodiment, a dustproof cover 20 composed of the base member 30 and the resin cover member 40 can be provided.

[0056] (7) In the combine 1 of the above embodiment, the dust cover 20 further includes a fixing member 50 that fixes the second fixing portion 43 to the first fixing portion 32, and the fixing member 50 is a fastening member (bolt and nut) that fastens the first fixing portion 32 and the second fixing portion 43. According to the combine 1 of the present embodiment, the base member 30 and the resin cover member 40 can be easily fixed by the fastening member.

[0057] (8) The fixing method of the cover member 40 of the above embodiment is a fixing method of the cover member 40 to the base member 30 in the dust cover 20 including a base member 30 including a base plate 31 having a first surface 31a and a second surface 31b formed on the back side of the first surface 31a, and a resin cover member 40 including an outer plate 41 facing the second surface 31b and a side plate 42 extending from the outer plate 41 toward the base plate 31 side. The side plate 42 includes a curved portion 42a having a curved shape and a straight portion 42b having a straight shape when viewed in a direction orthogonal to the first surface 31a. The fixing method of the above embodiment includes providing a first fixing portion 32 on the second surface 31b side of the base plate 31, providing a second fixing portion 43 on the inner surface 42d side of the side plate 42, providing a first fixing surface 33 for fixing the second fixing portion 43 in the first fixing portion 32, providing a second fixing surface 44 facing the first fixing surface 33 in the second fixing portion 43, and in the curved portion 42a, making the perpendicular L2 of the second fixing surface 44 orthogonal to the perpendicular L0 of the first surface 31a and separating the second fixing surface 44 from the inner surface 42d of the side plate 42, and fixing the second fixing portion 43 to the first fixing portion 32.

[0058] According to the above fixing method, a dust cover 20 composed of the base member 30 and the resin cover member 40 can be provided. In other words, according to the above fixing method, for the dust cover 20 including the base member 30 and the cover member 40, the cover member 40 can be made of resin and can be fixed to the base member 30.

[0059] (9) In the fixing method of the above embodiment, in the straight portion 42b, the second fixing portion 43 is fixed to the first fixing portion 32 with the inner surface 42d of the side plate 42 as the second fixing surface 44. According to the above fixing method, for the curved portion 42a and the straight portion 42b (that is, for the entire dust cover 20), it is possible to fix the resin cover member 40 to the base member 30 by working from the outer side in the circumferential direction. Thereby, the assembly work of the dust cover 20 becomes easier.

[0060] (10) In the fixing method of the above embodiment, in the curved portion 42a, the second fixing portion 43 is provided by extending it in a direction orthogonal to the first surface 31a. According to the above fixing method, the second fixing portion 43 can be made to have a function as a reinforcing rib, and thereby the rigidity of the resin cover member 40 can be improved. Thereby, it becomes possible to fix the resin cover member 40 to the base member 30.

[0061] (11) In the fixing method of the above embodiment, in the curved portion 42a, the first fixing portion 32 and the second fixing portion 43 are fastened in a direction orthogonal to the perpendicular line L0 of the first surface 31a by bolts and nuts which are fastening members. According to the above fixing method, the base member 30 and the resin cover member 40 can be easily fixed by the fastening members.

[0062] (12) In the fixing method of the above embodiment, in the straight portion 42b, the first fixing portion 32 and the second fixing portion 43 are fastened in a direction orthogonal to the perpendicular line L0 of the first surface 31a by the fastening members. According to the above fixing method, the base member 30 and the resin cover member 40 can be easily fixed by the fastening members.

[0063] The above embodiments are illustrative in all respects and not restrictive. The scope of the rights of the present invention is shown not by the above embodiments but by the scope of the claims, and includes all modifications within the scope equivalent to the configurations described in the claims.

Explanation of Reference Numerals

[0064] 1 Combine (working machine) 10 Machine body 11 Machine body frame 20 Dust cover 30 Base member 31 Base plate 31a First surface 31b Second surface 32 First fixing part 33 First fixing surface 40 Cover member 41 Outer plate 42 Side plate 42a Curved part 42b Straight part 42c Opening 42d Inner surface 43 Second fixing part 44 Second fixing surface 45 Sealing member 50 Fixing member L0 Perpendicular line to the first surface L1 Perpendicular line to the first fixing surface L2 Perpendicular line to the second fixing surface

Claims

1. A working machine comprising a dust cover that covers a side portion of the machine body, wherein the dust cover comprises: a base member attached to a machine body frame constituting the machine body; and a resin cover member fixed to the base member, wherein the base member comprises: a base plate having a first surface facing the machine body frame and a second surface formed on the back side of the first surface; and a first fixing portion provided on the second surface side of the base plate, wherein the cover member comprises: an outer plate facing the second surface; a side plate extending from the outer plate toward the base plate; and a second fixing portion provided on the inner surface side of the side plate, wherein the first fixing portion has a first fixing surface for fixing the second fixing portion; the second fixing portion has a second fixing surface facing the first fixing surface; the side plate includes a curved portion having a curved shape when viewed in a direction perpendicular to the first surface; and in the curved portion, the second fixing surface is provided spaced apart from the inner surface of the side plate, and a perpendicular to the second fixing surface is perpendicular to a perpendicular to the first surface, the working machine.

2. The side plate further includes a straight portion having a straight shape when viewed in a direction perpendicular to the first surface, and in the straight portion, the second fixing surface is the inner surface of the side plate, the working machine according to claim 1.

3. In the curved portion, the second fixing portion is provided to extend in a direction perpendicular to the first surface, the working machine according to claim 1 or claim 2.

4. The curved portion further includes an opening formed at a position facing the first fixing portion, the working machine according to claim 1 or claim 2.

5. The dust cover further includes a sealing member for sealing the opening, the working machine according to claim 4.

6. A perpendicular to the first fixing surface is perpendicular to a perpendicular to the first surface, the working machine according to claim 1 or claim 2.

7. The dust cover further includes a fixing member for fixing the second fixing portion to the first fixing portion, and the fixing member is a fastening member for fastening the first fixing portion and the second fixing portion, the working machine according to claim 1 or claim 2.

8. A base member including a base plate having a first surface and a second surface formed on the back side of the first surface; and a resin cover member including an outer plate facing the second surface and a side plate extending from the outer plate toward the base plate, A method for fixing the cover member to the base member in a dust cover including a curved portion having a curved shape and a straight portion having a straight shape, as viewed from a direction orthogonal to the first surface, providing a first fixing portion on the second surface side of the base plate and providing a second fixing portion on the inner surface side of the side plate, providing a first fixing surface for fixing the second fixing portion in the first fixing portion, providing a second fixing surface facing the first fixing surface in the second fixing portion, In the curved portion, a perpendicular line of the second fixing surface is made orthogonal to a perpendicular line of the first surface, and the second fixing surface is provided so as to be separated from the inner surface of the side plate, and the second fixing portion is fixed to the first fixing portion. A method for fixing a cover member.

9. The method for fixing a cover member according to claim 8, wherein in the straight portion, the inner surface of the side plate is used as the second fixing surface, and the second fixing portion is fixed to the first fixing portion.

10. The method for fixing a cover member according to claim 8 or claim 9, wherein in the curved portion, the second fixing portion is provided to extend in a direction orthogonal to the first surface.

11. The method for fixing a cover member according to claim 8 or claim 9, wherein in the curved portion, the first fixing portion and the second fixing portion are fastened in a direction orthogonal to a perpendicular line of the first surface by a fastening member.

12. The method for fixing a cover member according to claim 11, wherein in the straight portion, the first fixing portion and the second fixing portion are fastened in a direction orthogonal to a perpendicular line of the first surface by a fastening member.

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