combine

Abstract

To suppress invasion of rain water into a drive transmission part as compared with a conventional configuration.SOLUTION: A space above a transmission mechanism (76) is covered with a covering part (81a) arranged between a cabin (12) and a reaping device (13) for the transmission mechanism (76) arranged between the cabin (12) and the reaping device (13) for transmitting the drive from an engine (51) to the reaping device (13) so that invasion of rain water to a drive transmission part can be suppressed as compared with a conventional configuration.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a combine harvester that harvests and threshes crops such as rice and wheat from a farm field. [Background technology]

[0002] In a combine harvester that harvests and threshes crops such as rice and wheat, the roof portion (roof 20) of the cabin (8) in which the work vehicle sits extends further outward than the side window (17) of the vehicle body. A technique is known in which a work light (64) is provided below this extended portion to illuminate the surroundings when working in dark hours, thereby maintaining driving and work accuracy (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-225014 A (particularly, FIG. 17) Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in Patent Document 1, the amount of protrusion of the extension part to the outside of the aircraft is secured to be necessary and sufficient for installing a work light, and the amount of protrusion to the left and right is kept as small as possible to achieve a compact width of the entire cabin. Therefore, the range that the cabin roof covers like a canopy above the aircraft is kept narrow. In the configuration described in Patent Document 1, the engine is generally disposed below the cabin, and a transmission shaft that transmits drive from the engine to the harvesting device, threshing device, and traveling device, a pulley attached to the transmission shaft, a belt stretched around the pulley, and the like are provided. In the configuration described in Patent Document 1, in which the cabin roof protrudes only slightly, rainwater and the like easily gets into the pulleys and belts. If rainwater gets in, there is a risk that the belt will slip or fall off, and each working device, such as the harvesting device, may temporarily malfunction or stop functioning.

[0005] The present invention has a technical object to prevent rainwater from entering the drive transmission parts in comparison with the conventional configuration. [Means for solving the problem]

[0006] The above-mentioned problems of the present invention are solved by the following means. The invention described in claim 1 includes a vehicle body (2) having a cabin (12) in which an operator rides, a traveling device (11) disposed under the vehicle body (2) and driving the vehicle body (2), a harvesting device (13) disposed adjacent to the cabin (12) and harvesting stalks from a field, a transmission mechanism (76) disposed at least partially between the cabin (12) and the harvesting device (13) and transmitting drive from an engine (51) to the harvesting device (13), a cabin roof (81) having a cover portion (81a) that covers the upper part of the transmission mechanism (76) disposed between the cabin (12) and the harvesting device (13) and constituting a roof of the cabin (12), the transmission mechanism (76) having a first transmission member (59) that transmits drive from the engine (51) to the reaping device (13) and a second transmission member (60) that transmits drive from the engine (51) to the traveling device (11); the cover portion (81a) that covers the first transmission member (59) and the second transmission member (60) from above; a cover (101) that covers a portion where the stalks harvested by the reaping device (13) are transferred to a threshing device (16); a headlight (102) provided on the cover (101); and a support member (103) that supports the headlight (102) and is capable of adjusting the vertical position of the headlight (102); The present invention relates to a combine harvester (1).

[0009] Claim 2 the invention described in is characterized in that the support member (103) has a straight-lined central portion (106) in the left-right direction, a front cover mounting portion (107) to which the cover (101) is attached, a reinforcing portion (108) connecting the left and right front end portions of the cover mounting portion (107), a headlamp mounting portion (112) to which the headlamp (102) is attached, and recessed portions (109) provided on both left-right sides and inclined rearward as they extend to the sides, the headlamp mounting portions (112) being disposed in a position parallel to the recessed portions (109). Claim 1 The present invention relates to a combine harvester (1) as described above. Effect of the Invention

[0010] According to the invention described in claim 1, by covering the upper part of the transmission mechanism (76) with the cover portion (81a) arranged between the cabin (12) and the harvesting equipment (13), it is possible to prevent rainwater from entering the drive transmission part compared to the conventional configuration.

[0011] Also, claim 1 According to the described invention 、 The second transmission member (60), which transmits driving force from the engine (51) to the traveling device (11), is also covered from above with the cover portion (81a), thereby improving the stability of traveling.

[0012] Furthermore, claim 1 According to the described invention 、 By providing a support member (103) that supports the headlight (102) and enables adjustment of the vertical position of the headlight (102), the position of the headlight (102) can be adjusted to match the position to be illuminated by the headlight (102).

[0013] Claim 2 According to the described invention, Claim 1 In addition to the effects of the invention described above, by arranging the headlamp mounting portion (112) in a position parallel to the receding portion (109), the position of the receding portion (109) can be used as a landmark or guide when mounting the headlamp (102), making it easy to mount the headlamp in the desired position and position. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a side view of a combine harvester as an example of a work vehicle according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the work vehicle of FIG. [Diagram 3] FIG. 3 is a plan view of the work vehicle of FIG. [Figure 4] FIG. 4 is a rear view of the work vehicle of FIG. [Diagram 5] FIG. 5 is a diagram illustrating the main parts of the cabin, engine, and transmission mechanism of the embodiment, and is a schematic diagram of the combine harvester as seen from the front. [Figure 6] FIG. 6 is a diagram illustrating a main part of a transmission mechanism between the cabin and the engine according to the embodiment, and is a schematic diagram of the combine harvester as viewed from above. [Figure 7] FIG. 7 is a diagram illustrating a main part of a transmission mechanism between the cabin and the engine according to the embodiment, and is a schematic diagram of the combine harvester as seen from the side. [Figure 8] FIG. 8 is a perspective view of the cover according to the embodiment. [Figure 9] FIG. 9 is an explanatory diagram of a headlamp and an adjustment mechanism according to the embodiment. [Figure 10] FIG. 10 is a plan view of the headlamp support member. [Figure 11] Figure 11 is a component diagram of the support member, with Figure 11(A) being an oblique view, Figure 11(B) being a view from the direction of arrow XIB in Figure 11(A), Figure 11(C) being a view from the direction of arrow XIC in Figure 11(B), Figure 11(D) being a view from the direction of arrow XID in Figure 11(B), and Figure 11(E) being a view from the direction of arrow XIE in Figure 11(B). [Figure 12] FIG. 12 is an explanatory diagram of the interior of the cabin according to the embodiment, and is a cross-sectional perspective view of a main part with the engine cover open. [Figure 13] FIG. 13 is a front view of the engine cover according to the embodiment, illustrating a state in which the engine cover is open. [Figure 14] FIG. 14 is a front view of the engine cover according to the embodiment, illustrating the state in which the engine cover is closed. [Figure 15] FIG. 15 is a plan view of the engine cover. [Figure 16] FIG. 16 is an explanatory diagram of a fixing portion of an engine cover, FIG. 16(A) being an explanatory diagram of the configuration of an embodiment, and FIG. 16(B) being an explanatory diagram of another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of the present invention will be described below. FIG. 1 is a side view of a combine harvester as an example of a work vehicle according to an embodiment of the present invention. FIG. 2 is a front view of the work vehicle of FIG. FIG. 3 is a plan view of the work vehicle of FIG. FIG. 4 is a rear view of the work vehicle of FIG.

[0016] 1 to 4, a combine harvester 1 as an example of a work vehicle according to an embodiment of the present invention has a vehicle body 2. A pair of left and right traveling devices 11 are arranged under the vehicle body 2. The traveling device 11 according to the embodiment is, as an example, configured by a so-called crawler of an endless track. A cabin 12 as an example of a riding section in which an operator can ride is installed on the right front side of the vehicle body 2. A harvesting device 13 (an example of a working machine, an example of a reaping device) that harvests crops in a field is arranged on the front side of the vehicle body 2. A transporting device 14 that transports harvested grains is arranged behind the harvesting device 13. A threshing device 16 that threshes the grains transported by the transporting device 14 is arranged behind the transporting device 14. A grain tank 17 (an example of a container) in which grains processed by the threshing device 16 are stored is arranged on the right side of the threshing device 16. A discharge device 18 is connected to the rear of the grain tank 17 for discharging grain from the grain tank 17 into a container (not shown) of a truck outside the field. A straw discharge device 19 for discharging straw is disposed at the rear of the vehicle body 2. The straw discharge device 19 in the embodiment is configured as a device capable of temporarily storing straw and discharging it in a bundle, that is, a dropper. That is, while the dropper function is in operation, the straw can be discharged in a bundle, and while the dropper function is stopped, the straw after harvesting is discharged as it is without being bundled.

[0017] In the combine harvester 1 of the embodiment, obstacle sensors 31, 32, and 33 as an example of crop detection means are installed on the front and both the left and right sides of the vehicle body 2. The obstacle sensors 31 to 33 are capable of detecting crops and obstacles in front of and on both the left and right sides of the vehicle body 2. Note that, although the obstacle sensors have been exemplified as an example of crop detection means, this is not limiting, and an imaging device such as a camera can also be used. In the combine harvester 1 of the embodiment, a receiver 41 as an example of a current position measuring means is installed on the upper surface of the cabin 12. The receiver 41 can receive a signal from a GNSS satellite 42 to measure the current position of the combine harvester 1. Therefore, the combine harvester 1 of the embodiment can run autonomously (automatic running, unmanned running) using GNSS, and can also run according to the operation of an operator who gets into the cabin 12 (manual running, manned running). During autonomous running, the operator who operates a terminal 46 capable of wireless communication with the combine harvester 1 can be outside the combine harvester 1 (outside or inside the field), or can get into the cabin 12 while carrying the terminal 46.

[0018] FIG. 5 is a diagram illustrating the main parts of the cabin, engine, and transmission mechanism of the embodiment, and is a schematic diagram of the combine harvester as seen from the front. FIG. 6 is a diagram illustrating a main part of a transmission mechanism between the cabin and the engine according to the embodiment, and is a schematic diagram of the combine harvester as viewed from above. FIG. 7 is a diagram illustrating a main part of a transmission mechanism between the cabin and the engine according to the embodiment, and is a schematic diagram of the combine harvester as seen from the side.

[0019] In FIG. 5, in the combine harvester 1 of the embodiment, an engine 51 as an example of a drive source is disposed below the cabin 12. An engine output shaft 52, which is an example of a transmission member, extends from the engine 51. In the embodiment, the engine output shaft 52 extends from the cabin 12 side to the harvesting device 13 side, that is, horizontally toward the right side. In addition, a first pulley 53 and a second pulley 54 are supported on the engine output shaft 52 in the embodiment.

[0020] 5 to 7, a transmission case 56, which is an example of a speed change device, is disposed in front of and below the engine 51. Inside the transmission case 56, an HST (Hydraulic Static Transmission) 57 and other gear trains, clutches, etc. (not shown) are disposed. A speed change input shaft 58 (an example of a transmission member) and a reaping output shaft (an example of a first transmission member) 59 extend from the transmission case 56 to the left side of the vehicle body, specifically, from the cabin 12 side toward the harvesting device 13 (an example of a reaping device). In addition, a traveling output shaft (an example of a second transmission member) 60 that transmits drive to the traveling device 11 extends from the transmission case 56.

[0021] The transmission input shaft 58 extends from the HST 57, and a third pulley 61 is supported on the outer end of the transmission input shaft 58. A first transmission belt 62 is stretched between the third pulley 61 and the first pulley 53. Therefore, the drive force of the engine 51 is transmitted to the HST 57 of the transmission case 56 via the first pulley 53, the first transmission belt 62, the third pulley 61, and the transmission input shaft 58. A fourth pulley 63 is supported on the outer end (left end) of the mowing output shaft 59.

[0022] A reaping input shaft 66 extends from the harvesting device 13 toward the cabin 12 (the right side of the vehicle body). A fifth pulley 67 is supported on the outer end (right end) of the reaping input shaft 66. A second transmission belt 68 is stretched between the fourth pulley 63 and the fifth pulley 67. Therefore, the driving force changed in speed by the transmission case 56 is transmitted to the harvesting device 13 via the cutting output shaft 59, the fourth pulley 63, the second transmission belt 68, the fifth pulley 67, and the cutting input shaft 66.

[0023] A threshing input shaft 71 extends from the threshing device 16 behind the harvesting device 13 toward the cabin 12 (the right side of the vehicle body). A sixth pulley 72 is supported on the outer end (right end) of the threshing input shaft 71. A third transmission belt 73 is stretched between the sixth pulley 72 and the second pulley 54. Therefore, the drive of the engine 51 is transmitted to the threshing device 16 via the second pulley 54, the third transmission belt 73, the sixth pulley 72, and the threshing input shaft 71. The engine output shaft 52, the pulleys 53, 54, 61, 63, 67, 72, the belts 62, 68, 73, the speed change input shaft 58, the reaping output shaft 59, the traveling output shaft 60, the reaping input shaft 66, and the threshing input shaft 71 constitute a transmission mechanism 76 in this embodiment.

[0024] 5 to 7, the cabin roof 81 constituting the roof of the cabin 12 in the embodiment has an extension 81a (one example of a covering portion) extending to the left side of the machine body (the harvesting device 13 side). The extension 81a in the embodiment is formed in an eave shape and is arranged so as to cover the portion between the cabin 12 and the harvesting device 13 or the transporting device 14. Therefore, the extension 81a covers almost the entire upper part of the transmission mechanism 76 arranged between the cabin 12 and the harvesting device 13. Therefore, in the combine harvester 1 in the embodiment, it is possible to suppress the intrusion of rainwater into the drive transmission portion, compared to the conventional configuration.

[0025] In this embodiment, most of the traveling output shaft 60 is covered on the upper side by the cabin 12 and the harvesting device 13, and the exposed portion between the cabin 12 and the harvesting device 13 is covered by the extension portion 81a. This prevents rainwater from adhering not only to the pulleys 53, 54, 61, 63, 67, 72 and the belts 62, 68, 73, but also to the traveling output shaft 60. This also prevents rust and corrosion of the traveling output shaft 60, and is expected to extend its life. This improves the stability of the traveling, and also prevents the occurrence of traveling problems such as speed fluctuations.

[0026] Therefore, as shown in FIG. 6, the front end of the extension portion 81a in the embodiment is formed forward of the fourth pulley 63, which is the forwardmost of the pulleys, and the front end of the extension portion 81a is formed forward of the traveling output shaft 60, which is positioned even further forward than the fourth pulley 63. In addition, the rear end of the extension 81a is formed further rearward than the sixth pulley 72, which is the rearmost pulley among the pulleys. The extension 81a shown in FIG. 6 and other figures in this application covers the second pulley 54 and the sixth pulley 72 from above, but is less susceptible to rain because the threshing device 16 is disposed above the second pulley 54 and the sixth pulley 72. Therefore, compared to a configuration in which the cabin roof 81 does not cover the second pulley 54 and the sixth pulley 72, the extension 81a can be more reliably protected from rain. It is also possible to set the front-rear length and left-right width of the extension 81a so that the extension 81a does not cover the second pulley 54 and the sixth pulley 72 from above, which are covered by the threshing device 16.

[0027] In addition, since the traveling output shaft 60 is less likely to slip even when wet with rainwater compared to the belts 62, 68, and 73, it is also possible to configure the extension 81a not to cover the upper part of the traveling output shaft 60. In other words, it is not limited to a form that covers the entire transmission mechanism 76, and it is also possible to configure it to cover at least a part of it. In addition, slippage of the belt 62, 68, 73 is likely to occur when rainwater enters the contact portion with the pulleys 53, 54, 61, 63, 67, 72. Therefore, if the range of the pulleys 53, 54, 61, 63, 67, 72 covered by the extension 81a is wider than the uncovered range when viewed from above, slippage is likely to be suppressed. Therefore, it is preferable that the extension 81a covers the entire pulleys 53, 54, 61, 63, 67, 72 when viewed from above, but it is also possible to cover more than half of the pulleys 53, 54, 61, 63, 67, 72 (covering the side including the rotation center) and not cover a part of them. In particular, it is preferable that the positions of the front end and the rear end of the extension 81a are set so that more than half of the fourth pulley 63, which is the foremost side, is covered and more than half of the sixth pulley 72, which is the rearmost side, is covered.

[0028] In addition, the left end of the extension 81a is formed to a position corresponding to the right end of the harvesting device 13 and the conveying device 14. Therefore, the extension 81a covers the upper parts of the reaping input shaft 66, the fifth pulley 67, the second transmission belt 68, the threshing input shaft 71, the sixth pulley 72, the third transmission belt 73, etc. Furthermore, the left end of the extension portion 81a does not extend to the left ends of the harvesting device 13 and the transporting device 14, thereby preventing the cabin roof 81 from becoming larger. In the embodiment, the extension 81a is formed integrally with the cabin roof 81, but the present invention is not limited to this. It is also possible to form the extension 81a as a separate part fixed to the cabin roof 81 with bolts or the like.

[0029] FIG. 8 is a perspective view of the cover according to the embodiment. FIG. 9 is an explanatory diagram of a headlamp and an adjustment mechanism according to the embodiment. FIG. 10 is a plan view of the headlamp support member. Figure 11 is a component diagram of the support member, with Figure 11(A) being an oblique view, Figure 11(B) being a view from the direction of arrow XIB in Figure 11(A), Figure 11(C) being a view from the direction of arrow XIC in Figure 11(B), Figure 11(D) being a view from the direction of arrow XID in Figure 11(B), and Figure 11(E) being a view from the direction of arrow XIE in Figure 11(B).

[0030] 1 to 3 and 8, a cover 101 is disposed on the top of the conveying device 14 that conveys (takes over) the harvested culms from the harvesting device 13 to the threshing device 16. The cover 101 is provided to prevent small pieces of the conveyed culms and soil and sand attached to the culms from flying outside and to prevent rainwater from entering the inside of the conveying device 14. Headlights 102 are provided on the upper portion of the cover 101. In this embodiment, a pair of headlights 102 are provided on the left and right sides.

[0031] 9 and 10, a pair of left and right headlights 102 are supported by a support bracket 103 as an example of a support member. In Figs. 9 to 11, the support bracket 103 has a linear, flat body portion 104. A pair of body portions 104 are provided on the left and right corresponding to the pair of headlights 102. The right body portion 104 (104R) and the left body portion 104 (104L) are inclined upward as they go outward in the left-right direction, with a center line 104a in the left-right direction as a boundary.

[0032] In addition, each main body portion 104R, 104L has a central portion 106, 106 in the left-right direction near the center line 104a in a plan view of Figure 11(B), and the central portions 106, 106 extend linearly outward in the left-right direction in a plan view of Figure 11(B). A cover mounting portion 107 is integrally formed on the front side of each of the left and right central portions 106. The cover mounting portion 107 has an extension portion 107a extending forward and a bent portion 107b bent downward from the front end of the extension portion 107a. An elongated mounting hole 107c extending in the vertical direction is formed at the lower portion of the bent portion 107b.

[0033] A pair of left and right mounting holes 107c, 107c is connected between them by a reinforcing plate 108, which is an example of a reinforcing portion, and reinforces the strength and rigidity of the support bracket 103. The mounting holes 107c, 107c are connected to the cover 101 by a bolt (not shown) in a manner that sandwiches the reinforcing plate 108. Therefore, the support bracket 103 is supported by the cover 101 at the position of the mounting holes 107c, 107c, but the vertical position is configured to be variable and adjustable by the long hole.

[0034] Receding portions 109, 109 that are inclined rearward as they approach the sides (outside in the left-right direction) are integrally formed on the outer sides of the central portions 106, 106 in the left-right direction. Outer end portions 111, 111 extending outward in the left-right direction are integrally formed on the outer left-right direction sides of the receding portions 109, 109. Headlamp mounting holes 111a, 111a are formed in the outer end portions 111, 111 to mount the headlamp 102 via L-shaped brackets 112, 112 as an example of a mounting portion for the headlamp.

[0035] In the embodiment, the rear edges 112a, 112a of the L-shaped brackets 112, 112 are attached so as to be disposed in a position parallel to the rear edges 109a, 109a of the receding portions 109, 109. That is, when an operator attaches the headlamp 102 to the support bracket 103 during manufacturing or maintenance, the rear edges 112a, 112a of the L-shaped brackets 112, 112 can be attached so as to be parallel to the rear edges 109a, 109a of the receding portions 109, 109. Therefore, the rear edges 112a, 112a of the L-shaped brackets 112, 112 and the rear edges 109a, 109a of the receding portions 109, 109 function as marks and guides, and the attachment, assembly, and maintenance work are easier than in a configuration without such marks and guides. Without such marks or guidelines, headlight 102 may be installed in a direction different from the intended direction, and when headlight 102 is turned on, light may be emitted to a position other than the intended position, resulting in poor workability; however, the embodiment tends to prevent this from happening.

[0036] Adjustment portions 113, 113 that are bent downward are formed integrally with the outer ends of the outer end portions 111, 111. Adjustment holes 113a, 113a are formed in the lower portions of the adjustment portions 113, 113. Adjustment reference portions 114, 114 extending rearward are fixedly supported by welding etc. on the adjustment portions 113, 113. Reference holes 114a, 114a are formed in the rear end portions of the adjustment reference portions 114, 114. The adjustment portions 113, 113 and the adjustment reference portions 114, 114 are supported by a cover fixing bracket 116 (only the left side is shown in FIG. 9) as an example of a second cover mounting portion. The cover fixing bracket 116 is supported on the inner surface of the cover 101 by screws, bolts, etc. (not shown).

[0037] The support bracket 103 of the embodiment is supported rotatably at the reference holes 114a, 114a with respect to the cover fixing bracket 116. The adjustment holes 113a, 113a are fastened using fastening bolts 117, 117 having a diameter smaller than the inner diameter of the adjustment holes 113a, 113a. Therefore, the adjustment holes 113a, 113a are so-called drill holes. Therefore, the support bracket 103 can rotate around the reference holes 114a, 114a with respect to the cover fixing bracket 116 by the margin of the drill holes (113a, 113a). Therefore, the vertical position of the headlight 102 supported by the support bracket 103 can be adjusted by the margin of the drill holes (113a, 113a). Therefore, the operator can make fine adjustments according to the position he or she wants to illuminate with the headlight 102.

[0038] The adjustment holes 113a, 113a are exemplified as so-called drilled holes, but are not limited to this. For example, they can be elongated holes, or arc-shaped holes centered on the reference holes 114a, 114a, or other suitable modifications. In addition, it is preferable to attach cushion rubber to the fastening bolts 117, 117 when fastening them, because by attaching the cushion rubber, even if the fastening loosens over time due to vibrations during use, the friction of the rubber prevents the support bracket 103 from slipping off. The cushion rubber is also expected to suppress vibrations and noise. Furthermore, in the embodiment, a configuration in which a pair of left and right central portions 106 and the like are provided in correspondence with the pair of left and right headlights 102 is illustrated, but this is not limiting, and when there is one headlight, one central portion 106 and the like is sufficient. It is also possible to provide three or more headlights 102.

[0039] FIG. 12 is an explanatory diagram of the interior of the cabin according to the embodiment, and is a cross-sectional perspective view of a main part with the engine cover open. FIG. 13 is a front view of the engine cover according to the embodiment, illustrating a state in which the engine cover is open. FIG. 14 is a front view of the engine cover according to the embodiment, illustrating the state in which the engine cover is closed. FIG. 15 is a plan view of the engine cover. FIG. 16 is an explanatory diagram of a fixing portion of an engine cover, FIG. 16(A) being an explanatory diagram of the configuration of an embodiment, and FIG. 16(B) being an explanatory diagram of another embodiment.

[0040] 12 to 14, a seat fixing surface 201 to which a seat (not shown) on which an operator sits is fixed is provided inside the cabin 12. An engine 51 is disposed outside the cabin 12 below the seat fixing surface 201. A vertical plate portion 202 extending downward is provided at the front end of the seat fixing surface 201. The vertical plate portion 202 in this embodiment constitutes a part of the outer wall of the cabin 12. A service hole 203 as an example of an inspection portion is formed in the vertical plate portion 202. The service hole 203 in this embodiment is formed as a rectangular opening. Through the service hole 203, an operator can inspect and repair the engine 51 from inside the cabin 12.

[0041] The shape of the service hole 203 is not limited to a rectangular opening, and may be a round opening, hole, etc. The service hole 203 may be large enough to access the entire engine 51, or may be a small window-like hole that allows only inspection, or a small hole that only allows the insertion of tools such as a screwdriver or wrench, and may be modified as appropriate according to the design and specifications.

[0042] The service hole 203 is configured to be openable and closable by an engine cover 206, which is an example of an openable and closable door. The engine cover 206 is supported by the vertical plate portion 202 so as to be openable and closable by a hinge portion 207 disposed below the lower edge of the service hole 203. The hinge portion 207 can be provided above the service hole 203, but if provided above, the lower end of the engine cover 206 will be opened toward the upper side, and the engine cover 206 itself will likely become an obstacle to inspection. Therefore, it is preferable to provide the hinge portion 207 below the service hole 203.

[0043] 12 to 15, the engine cover 206 is formed in a flat plate shape larger than the outer edge of the service hole 203. An insulator 208 as an example of a heat insulating part is supported on the surface of the engine cover 206 on the vertical plate part 202 side. The insulator 208 is arranged along the outer periphery of the engine cover 206 so as to contact the vertical plate part 202 outside the outer edge of the service hole 203 when the engine cover 206 is closed. The insulator 208 suppresses the transmission of heat, noise, vibration, etc. from the engine 51 into the cabin 12. Note that in addition to the insulator 208, it is preferable that a heat insulating material, a heat shielding material, a soundproofing material, etc. are attached to the surface of the engine cover 206.

[0044] 12 to 16, a locking member 211 as an example of a fixing portion is disposed on the upper portion of engine cover 206. In the embodiment, a pair of locking members 211 (a total of two) are disposed on the left and right ends of engine cover 206. The number of locking members 211 is not limited to two, and it is possible to provide only one, or three or more. 16(A), a lock member 211 has a knob bolt 212 that penetrates an engine cover 206 and is rotatably supported by the engine cover 206. A knob 213 as an example of a handle portion is disposed on the knob bolt 212 on the inside of the cabin 12.

[0045] A hook 214 as an example of a hook fixing part is supported on the outside of the cabin 12 of the knob bolt 212. The hook 214 of the embodiment is supported on the knob bolt 212 in a manner sandwiched between two nuts 215, 215 attached to the bolt part of the knob bolt 212. In addition, a spacer 216 for adjusting a gap may be installed between the nut 215 and the engine cover 206 or between the knob 213 and the engine cover 206 to adjust the gap, adjust the position of the knob 213 or the hook 214, or improve the sliding to suppress frictional force and frictional noise during a rotation operation. The spacer 216 may be a metal washer 216a or a fluororesin washer 216b with low friction and good sliding properties. Also, instead of the washer 216a or the nut 215 on the washer 216a side, it is also possible to provide an insulator 208 between the hook 214 and the engine cover 206 as shown in FIG. 16(B).

[0046] 15, a stopper 217 as an example of a stopping member is disposed adjacent to the locking member 211 on the engine cover 206. The position of the stopper 217 is disposed corresponding to the edge of the insulator 208, which makes it easy to use as a mark or guide when attaching the stopper 217. The stopper 217 regulates the rotation of the locking member 211 so that the locking member 211 does not rotate too much. The stopper 217 of the embodiment is configured such that, when the hook 214 is in contact with the locking member 211, the upper end of the hook 214 protrudes above the upper edge of the service hole 203, that is, the hook 214 is hooked on the upper edge of the service hole 203, and the engine cover 206 is held in a closed state.

[0047] Therefore, by an operator grasping and rotating knob 213 of knob bolt 212, hook 214 can be rotated, and engine cover 206 can be held (locked) in the closed position by moving the tip of hook 214 above the upper edge of service hole 203. By rotating knob bolt 212 from this state to move the tip of hook 214 below the upper edge of service hole 203, the lock is released and engine cover 206 can be opened and closed around hinge portion 207. It is also possible to provide a protrusion on which the hook 214 can be caught on the outside of the cabin 12 of the vertical plate portion 202, and to lock the cabin 12 by catching the hook 214 on the protrusion. [Explanation of symbols]

[0048] 1...Work vehicle, 2…Car body, 11...running gear, 12…cabin, 13...Reaping device, 16…threshing equipment, 51…Engine, 59...first transmission member, 60...second transmission member, 76...Transmission mechanism, 81…Cabin roof, 81a...Covering part, 101…Cover, 102...Headlight, 103...support member, 106…Center in the left-right direction, 107...Cover mounting portion, 108…reinforcement part, 109…Retreat, 112...Headlight mounting part.

Claims

1. A vehicle body (2) having a cabin (12) in which an operator rides; A traveling device (11) arranged under the vehicle body (2) and configured to cause the vehicle body (2) to travel; a harvesting device (13) arranged adjacent to the cabin (12) and configured to harvest stalks from a field; a transmission mechanism (76) at least a portion of which is disposed between the cabin (12) and the reaping device (13) and which transmits driving force from the engine (51) to the reaping device (13); a cabin roof (81) that includes a cover portion (81a) that covers an upper portion of the transmission mechanism (76) disposed between the cabin (12) and the harvesting device (13) and that constitutes a roof of the cabin (12); the transmission mechanism (76) including a first transmission member (59) that transmits driving force from the engine (51) to the harvesting device (13) and a second transmission member (60) that transmits driving force from the engine (51) to the traveling device (11); The cover portion (81 a) that covers the first transmission member (59) and the second transmission member (60) from above; A cover (101) that covers the portion where the stalks harvested by the harvesting device (13) are transferred to the threshing device (16); A headlamp (102) provided on the cover (101); A support member (103) that supports the headlight (102) and is capable of adjusting the vertical position of the headlight (102); A combine harvester (1), comprising:

2. the support member (103) having a straight-line central portion (106) in the left-right direction, a front cover mounting portion (107) to which the cover (101) is attached, a reinforcing portion (108) connecting the left and right front end portions of the cover mounting portion (107), a headlamp mounting portion (112) to which the headlamp (102) is attached, and recessed portions (109) provided on both left-right sides and inclined rearward as they extend to the sides, the headlamp mounting portions (112) being disposed in an orientation parallel to the recessed portions (109); A combine harvester (1) according to claim 1, characterized in that it comprises:

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