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] This invention relates to a combine harvester that cuts and threshes crops such as rice and wheat from a field.

Background Art

[0002] In a combine harvester that cuts and threshes crops such as rice and wheat, the roof portion (roof 20) of the cabin (8) on which the work vehicle rides extends outside the machine body more than the side window (17), and a work lamp (64) is provided below this extended portion to illuminate the surroundings during work in a dark time zone, thereby maintaining traveling accuracy and work accuracy. This technology is known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technology described in Patent Document 1, the amount of protrusion of the extended portion outside the machine body is ensured to be sufficient for installing the work lamp, and the left and right protrusion amounts are suppressed as much as possible to achieve a compact left and right width of the entire cabin. Therefore, the range in which the cabin roof portion covers the upper part of the machine body like a shelter is kept narrow.

[0005] In the configuration described in Patent Document 1, it is common for the engine to be arranged below the cabin, and there are provided transmission shafts for transmitting drive from the engine to the mowing device, threshing device, and traveling device, pulleys attached to the transmission shafts, belts wound around the pulleys, and the like. In the configuration described in Patent Document 1 where the protrusion amount of the roof of the cabin is small, rainwater and the like easily enter the pulley and belt portions. If rainwater enters, the belt may slip or the belt may fall off, and there is a risk that each working device such as the mowing device may malfunction temporarily or the function may stop.

[0006] The technical problem of the present invention is to suppress the entry of rainwater into the drive transmission part compared to the conventional configuration.

Means for Solving the Problem

[0007] The above problem of the present invention is solved by the following solution means.

[0008] The invention according to claim 1 includes a vehicle body (2) having a cabin (12) on which an operator rides, a traveling device (11) disposed below the vehicle body (2) for traveling the vehicle body (2), a mowing device (13) disposed adjacent to the cabin (12) for mowing cereal straw from a field, a transmission mechanism (76) at least partially disposed between the cabin (12) and the mowing device (13) for transmitting drive from an engine (51) to the mowing device (13), a covering portion (81a) having a cabin roof (81) covering the upper part of the transmission mechanism (76) disposed between the cabin (12) and the mowing device (13), a first transmission member (59) for transmitting drive from the engine (51) to the mowing device (13), a second transmission member (60) for transmitting drive from the engine (51) to the traveling device (11), the covering portion (81a) covering the upper parts of the first transmission member (59) and the second transmission member (60), a cover (101) covering a portion where the cereal straw cut by the mowing device (13) is taken over by a threshing device (16), a headlamp (102) provided on the cover (101), and a support member (103) for supporting the headlamp (102) and capable of adjusting the vertical position of the headlamp (102). The combine (1) is characterized by the above features.

[0009] The invention according to claim 2 includes a central portion (106) in the left - right direction formed linearly, a front - side cover mounting portion (107) for mounting the cover (101), a reinforcing portion (108) connecting the left - and - right front end portions of the cover mounting portion (107), a headlamp mounting portion (112) for mounting the headlamp (102), and a retreat portion (109) provided on both sides in the left - right direction and inclined rearward toward the side. The combine (1) according to claim 1 is characterized by including the support member (103) in which the headlamp mounting portion (112) is disposed in a posture parallel to the retreat portion (109).

Advantages of the Invention

[0010] According to the invention described in claim 1, by covering the upper part of the transmission mechanism (76) with a covering part (81a) arranged between the cabin (12) and the mowing device (13), it is possible to suppress the entry of rainwater into the drive transmission part compared to the conventional configuration.

[0011] Further, according to the invention described in claim 1, in addition to the effect of the invention described in claim 1, by covering the upper part of the second transmission member (60) that transmits drive from the engine (51) to the traveling device (11) with the covering part (81a), the traveling stability is improved.

[0012] Furthermore, according to the invention described in claim 1, in addition to the effect of the invention described in claim 2, by providing a support member (103) that supports the headlight (102) and is capable of adjusting the vertical position of the headlight (102), the position of the headlight (102) can be adjusted according to the position to be illuminated by the headlight (102).

[0013] According to the invention described in claim 2, in addition to the effect of the invention described in claim 3, by arranging the attachment part (112) of the headlight in a posture parallel to the retracted part (109), when attaching the headlight (102), the position of the retracted part (109) can be used as a mark and a reference, and it can be easily attached at the target position and posture.

Brief Description of the Drawings

[0014]

Figure 1

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DETAILED DESCRIPTION OF THE INVENTION

[0015] Embodiments of the present invention will be described below.

[0016] FIG. 1 is a side view of a combine as an example of a work vehicle according to an embodiment of the present invention.

[0017] FIG. 2 is a front view of the work vehicle of FIG. 1.

[0018] Figure 3 is a plan view of the work vehicle of FIG. 1.

[0019] Figure 4 is a rear view of the work vehicle of FIG. 1.

[0020] In FIGS. 1 to 4, as an example of the work vehicle according to the embodiment of the present invention, the combine 1 has a vehicle body 2. A pair of left and right traveling devices 11 are arranged below the vehicle body 2. The traveling device 11 of the embodiment is configured by a so-called crawler of an endless track as an example. In the right front of the vehicle body 2, a cabin 12 is installed as an example of a boarding part where an operator can board. In the front part of the vehicle body 2, a harvesting device 13 (an example of a working machine, an example of a cutting device) for harvesting crops in the field is arranged. Behind the harvesting device 13, a conveying device 14 for conveying the harvested grains is arranged. Behind the conveying device 14, a threshing device 16 for threshing the grains conveyed by the conveying device 14 is arranged. On the right side of the threshing device 16, a grain tank 17 (an example of a container) for storing the grains processed by the threshing device 16 is arranged. At the rear part of the grain tank 17, a discharging device 18 for discharging the grains from the grain tank 17 to a container (not shown) of a truck outside the field is connected.

[0021] At the rear part of the vehicle body 2, a straw discharging device 19 for discharging straw is arranged. The straw discharging device 19 of the embodiment is configured by a so-called dropper, which is a device capable of discharging the straw in a bundled state by temporarily storing the straw. That is, when the dropper function is in operation, the straw can be discharged in a bundled state, and when the dropper function is stopped, the straw after harvesting is discharged as it is without being bundled.

[0022] In the combine 1 of the embodiment, obstacle sensors 31, 32, and 33 are installed at the front part and both left and right sides of the vehicle body 2 as an example of crop detection means. The obstacle sensors 31 to 33 can detect crops and obstacles in front of and on both left and right sides of the vehicle body 2. Although an obstacle sensor is exemplified as an example of the crop detection means, the present invention is not limited thereto, and an imaging device such as a camera can also be used.

[0023] In addition, in the combine 1 of the embodiment, a receiver 41 as an example of the current position measuring means is installed on the upper surface of the cabin 12. The receiver 41 can receive signals from the artificial satellite 42 for GNSS and measure the current position of the combine 1. Therefore, the combine 1 of the embodiment can perform autonomous driving (automatic driving, unmanned driving) using GNSS, and it is also possible for an operator to board the cabin 12 and drive according to the operation (manual driving, manned driving). During autonomous driving, the operator who operates the terminal 46 capable of wireless communication with the combine 1 can be outside the combine 1 (outside or inside the field), or can board the cabin 12 while carrying the terminal 46.

[0024] FIG. 5 is an explanatory diagram of the main parts of the cabin, engine, and transmission mechanism of the embodiment, and is a schematic view of the combine seen from the front.

[0025] FIG. 6 is an explanatory diagram of the main parts of the transmission mechanism of the cabin and engine of the embodiment, and is a schematic view of the combine seen from above.

[0026] FIG. 7 is an explanatory diagram of the main parts of the transmission mechanism of the cabin and engine of the embodiment, and is a schematic view of the combine seen from the side.

[0027] In FIG. 5, in the combine 1 of the embodiment, an engine 51 as an example of a drive source is disposed below the cabin 12.

[0028] An engine output shaft 52 as an example of a transmission member extends from the engine 51. The engine output shaft 52 of the embodiment extends from the cabin 12 side toward the harvesting device 13 side, that is, horizontally to the right. In addition, a first pulley 53 and a second pulley 54 are supported on the engine output shaft 52 of the embodiment.

[0029] In FIGS. 5 to 7, in front of and below the engine 51, a transmission case 56 is disposed as an example of a transmission. Inside the transmission case 56, an HST (Hydraulic Static Transmission) 57 and other gear trains and clutches (not shown) are disposed.

[0030] From the transmission case 56, a transmission input shaft 58 and a harvesting output shaft (an example of a first transmission member) 59, as examples of transmission members, extend toward the left side of the vehicle body, specifically, toward the harvesting device 13 (an example of a harvesting device) side from the cabin 12 side. Further, from the transmission case 56, a traveling output shaft (an example of a second transmission member) 60 that transmits drive to the traveling device 11 extends.

[0031] The transmission input shaft 58 extends from the HST 57, and a third pulley 61 is supported at 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.

[0032] Therefore, the drive 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.

[0033] A fourth pulley 63 is supported at the outer end (left end) of the harvesting output shaft 59.

[0034] A harvesting input shaft 66 extends from the harvesting device 13 toward the cabin 12 side (right side of the vehicle body). A fifth pulley 67 is supported at the outer end (right end) of the harvesting input shaft 66. A second transmission belt 68 is stretched between the fourth pulley 63 and the fifth pulley 67.

[0035] Therefore, the drive shifted in the transmission case 56 is transmitted to the harvesting device 13 via the harvesting output shaft 59, the fourth pulley 63, the second transmission belt 68, the fifth pulley 67, and the harvesting input shaft 66.

[0036] From the threshing device 16 behind the harvesting device 13, a threshing input shaft 71 extends toward the cabin 12 side (the right side of the vehicle body). A sixth pulley 72 is supported at the outer end portion (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.

[0037] 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.

[0038] The engine output shaft 52, the pulleys 53, 54, 61, 63, 67, 72, the belts 62, 68, 73, the transmission input shaft 58, the mowing output shaft 59, the traveling output shaft 60, the mowing input shaft 66, and the threshing input shaft 71 constitute the transmission mechanism 76 of the embodiment.

[0039] In FIGS. 5 to 7, the cabin roof 81 that constitutes the roof of the cabin 12 of the embodiment has an extension portion 81a (an example of a covering portion) that extends to the left side of the machine body (the harvesting device 13 side). The extension portion 81a of the embodiment is formed in a roof shape and is arranged to cover the portion between the cabin 12 and the harvesting device 13 and the conveying device 14. Therefore, the extension portion 81a covers almost all of the upper part of the transmission mechanism 76 arranged between the cabin 12 and the harvesting device 13. Thus, in the combine 1 of the embodiment, the entry of rainwater into the drive transmission portion can be suppressed as compared with the conventional configuration.

[0040] In the 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.

[0041] Therefore, not only the portions of the pulleys 53, 54, 61, 63, 67, 72 and the belts 62, 68, 73 but also the adhesion of rainwater to the traveling output shaft 60 is suppressed. Therefore, rust and corrosion of the traveling output shaft 60 are also suppressed, and a long service life can be expected. Therefore, the traveling stability is also improved, and the occurrence of traveling defects such as speed fluctuations is also suppressed.

[0042] Therefore, as shown in FIG. 6, the extension portion 81a of the embodiment has a front end formed forward of the fourth pulley 63 disposed most forward among the pulleys and forward of the traveling output shaft 60 disposed even further forward than the fourth pulley 63.

[0043] Also, the rear end portion of the extension portion 81a is formed rearward of the sixth pulley 72 disposed most rearward among the pulleys. The extension portion 81a shown in FIG. 6 and the like in the present application covers above the second pulley 54 and the sixth pulley 72. However, since the threshing device 16 is disposed above the second pulley 54 and the sixth pulley 72, it is less likely to be affected by rain. Therefore, compared with a configuration in which the cabin roof 81 does not cover the second pulley 54 and the sixth pulley 72, it is possible to more reliably protect against rain. Note that the front-rear length and the left-right width of the extension portion 81a may be set so that the extension portion 81a does not cover above the second pulley 54 and the sixth pulley 72 covered with information by the threshing device 16.

[0044] Note that, since the traveling output shaft 60 is less likely to slip or the like even if wetted by rain compared with the belts 62, 68, 73, it is also possible to adopt a configuration in which the extension portion 81a does not cover above the traveling output shaft 60. That is, the configuration is not limited to covering all of the transmission mechanism 76, and it is also possible to adopt a configuration that covers at least a part thereof.

[0045] In addition, the slippage of the belts 62, 68, 73 is likely to occur when rainwater enters the contact portions with the pulleys 53, 54, 61, 63, 67, 72. Therefore, when viewed from above, if the range in which the pulleys 53, 54, 61, 63, 67, 72 are covered by the extension portion 81a is wider than the non-covered range, slippage is more likely to be suppressed. Thus, when viewed from above, it is preferable that the extension portion 81a covers the entire pulleys 53, 54, 61, 63, 67, 72, but it is also possible to adopt a form in which it covers more than half of the pulleys 53, 54, 61, 63, 67, 72 (covering the side including the rotation center) and does not cover a part. In particular, it is preferable that the positions of the front end and the rear end of the extension portion 81a are set such that more than half of the most front-side fourth pulley 63 and more than half of the most rear-side sixth pulley 72 are covered.

[0046] In addition, the left end of the extension portion 81a is formed to reach a position corresponding to the right end of the harvesting device 13 and the conveying device 14. Therefore, the upper sides of the cutting 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. are covered by the extension portion 81a.

[0047] Note that the left end of the extension portion 81a does not extend to the left end of the harvesting device 13 and the conveying device 14, and the enlargement of the cabin roof 81 is suppressed.

[0048] Note that in the embodiment, the extension portion 81a is integrally formed with the cabin roof 81, but it is not limited thereto. It is also possible to use a separate part fixed to the cabin roof 81 with bolts or the like.

[0049] FIG. 8 is a perspective view of the cover of the embodiment.

[0050] FIG. 9 is an explanatory view of the headlamp and the adjustment mechanism of the embodiment.

[0051] FIG. 10 is a plan view of the support member of the headlamp.

[0052] FIG. 11 is a component diagram of the support member. FIG. 11(A) is a perspective view, FIG. 11(B) is a view seen from the direction of arrow XIB in FIG. 11(A), FIG. 11(C) is a view seen from the direction of arrow XIC in FIG. 11(B), FIG. 11(D) is a view seen from the direction of arrow XID in FIG. 11(B), and FIG. 11(E) is a view seen from the direction of arrow XIE in FIG. 11(B).

[0053] In FIGS. 1 to 3 and FIG. 8, a cover 101 is disposed above a conveying device 14 that conveys (takes over) the crop straw cut from the harvesting device 13 to the threshing device 16. The cover 101 is provided to prevent fine cuttings of the conveyed crop straw and soil, sand, etc. attached to the crop straw from flying outside, and to suppress rainwater from entering the inside of the conveying device 14.

[0054] A headlight 102 is provided above the cover 101. The headlights 102 in the embodiment are arranged in a pair on the left and right.

[0055] In FIGS. 9 and 10, the 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 and flat main body portion 104. The main body portion 104 is provided in a pair on the left and right corresponding to the pair of headlights 102. The right main body portion 104 (104R) and the left main body portion 104 (104L) are inclined upward as they go outward in the left - right direction with the center line 104a in the left - right direction as a boundary.

[0056] Also, each of the main body portions 104R, 104L has left - right central portions 106, 106 in the vicinity of the center line 104a in a plan view of FIG. 11(B), and the central portions 106, 106 extend linearly outward in the left - right direction in the plan view of FIG. 11(B).

[0057] On the front side of each of the left and right central portions 106, 106, cover attachment portions 107, 107 are integrally formed. The cover attachment portions 107, 107 have extending portions 107a, 107a that extend forward and bending portions 107b, 107b that bend downward from the front ends of the extending portions 107a, 107a. Long hole-shaped attachment holes 107c, 107c that extend in the vertical direction are formed in the lower portions of the bending portions 107b, 107b.

[0058] Between the pair of left and right attachment holes 107c, 107c, they are connected by a reinforcing plate 108 as an example of a reinforcing portion, reinforcing the strength and rigidity of the support bracket 103. Also, the attachment holes 107c, 107c are connected to the cover 101 in a form that sandwiches the reinforcing plate 108 with bolts (not shown). Therefore, the support bracket 103 is supported by the cover 101 at the positions of the attachment holes 107c, 107c, but is configured such that the vertical position can be varied and adjusted with the long holes.

[0059] On the outer sides in the left - right direction of the central portions 106, 106, recessed portions 109, 109 that incline rearward as they go toward the outside (outer sides in the left - right direction) are integrally formed.

[0060] On the outer sides in the left - right direction of the recessed portions 109, 109, outer end portions 111, 111 that extend toward the outer sides in the left - right direction are integrally formed. Headlight attachment holes 111a, 111a for attaching the headlight 102 are formed in the outer end portions 111, 111 via L - shaped brackets 112, 112 as an example of attachment portions for the headlight.

[0061] In the embodiment, the trailing edges 112a, 112a of the L-shaped brackets 112, 112 are attached so as to be arranged in a posture parallel to the trailing edges 109a, 109a of the recessed portions 109, 109. That is, when an operator attaches the headlamp 102 to the support bracket 103 during manufacturing or maintenance, the trailing edges 112a, 112a of the L-shaped brackets 112, 112 may be attached so as to be parallel to the trailing edges 109a, 109a of the recessed portions 109, 109. Therefore, the trailing edges 112a, 112a of the L-shaped brackets 112, 112 and the trailing edges 109a, 109a of the recessed portions 109, 109 function as marks and references. Compared with a configuration without such marks and references, the attachment work, assembly, and maintenance work become easier. Without such marks and references, the headlamp 102 may be attached in a direction different from the intended direction. When the headlamp 102 is lit, there is a problem that light is irradiated at a position deviated from the intended position, resulting in deteriorated workability. However, in the embodiment, this is easily suppressed.

[0062] Adjustment portions 113, 113 that bend downward are integrally formed at 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.

[0063] Adjustment reference portions 114, 114 that extend rearward are fixedly supported on the adjustment portions 113, 113 by welding or the like. Reference holes 114a, 114a are formed at the rear end portions of the adjustment reference portions 114, 114.

[0064] 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 attachment portion. The cover fixing bracket 116 is supported on the inner surface of the cover 101 by screws, bolts, or the like (not shown).

[0065] The support bracket 103 of the embodiment is rotatably supported with respect to the cover fixing bracket 116 at the portions of the reference holes 114a, 114a. And at the portions of the adjustment holes 113a, 113a, fastening bolts 117, 117 having a diameter smaller than the inner diameter of the adjustment holes 113a, 113a are used for fastening. Therefore, the adjustment holes 113a, 113a are constituted by so-called clearance holes. Thus, due to the margin of the clearance holes (113a, 113a), the support bracket 103 can rotate with respect to the cover fixing bracket 116 about the reference holes 114a, 114a. Thus, due to the margin of the clearance holes (113a, 113a), the vertical position of the headlight 102 supported by the support bracket 103 can be adjusted. Thus, fine adjustment can be performed according to the position that the operator wants to illuminate with the headlight 102.

[0066] Note that the adjustment holes 113a, 113a are exemplified as having a configuration of so-called clearance holes, but are not limited thereto. For example, they can be appropriately changed to elongated holes or arc-shaped holes centered on the reference holes 114a, 114a.

[0067] Also, it is preferable to attach cushion rubbers to the fastening bolts 117, 117 during fastening. By attaching the cushion rubbers, even if the fastening loosens over time due to vibrations during use, the support bracket 103 is prevented from slipping off due to the friction of the rubbers. Also, vibration and noise suppression can be expected with the cushion rubbers.

[0068] Furthermore, in the embodiment, corresponding to the provision of a pair of left and right headlights 102, a configuration in which a pair of left and right central portions 106, etc. are also provided is exemplified, but it is not limited thereto. When there is one headlight, one central portion 106, etc. is sufficient. Also, it is possible to provide three or more headlights 102.

[0069] FIG. 12 is an explanatory view of the interior of the cabin of the embodiment, and is a perspective view of a main part cross section in a state where the engine cover is opened.

[0070] FIG. 13 is a view of the engine cover portion of the embodiment as seen from the front, and is an explanatory view of the state in which the engine cover is open.

[0071] FIG. 14 is a view of the engine cover portion of the embodiment as seen from the front, and is an explanatory view of the state in which the engine cover is closed.

[0072] FIG. 15 is a plan view of the engine cover.

[0073] FIG. 16 is an explanatory view of the fixing portion of the engine cover. FIG. 16(A) is an explanatory view of the configuration of the embodiment, and FIG. 16(B) is an explanatory view of another form.

[0074] In FIGS. 12 to 14, inside the cabin 12, there is provided a seat fixing surface 201 to which a seat (not shown) on which an operator sits is fixed. The engine 51 is disposed outside the cabin 12 below the seat fixing surface 201.

[0075] At the front end of the seat fixing surface 201, there is provided a vertically extending vertical plate portion 202. The vertical plate portion 202 of the 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 of the 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.

[0076] Note that the shape of the service hole 203 is not limited to a rectangular opening, and it can also be configured by a circular opening, a hole, or the like. Further, the service hole 203 can be made large enough to allow access to the entire engine 51, or can be made into a small window shape that allows only inspection, or can be made into a small hole through which only tools such as a driver or a wrench can be inserted, and can be appropriately changed according to the design, specifications, etc.

[0077] The service hole 203 is configured to be openable and closable by an engine cover 206 as an example of an opening / closing door. The engine cover 206 is pivotally supported by a hinge portion 207 disposed below the lower edge of the service hole 203 on the vertical plate portion 202. Although the hinge portion 207 can be provided above the service hole 203, when provided above, the lower end of the engine cover 206 will be opened upward, and the engine cover 206 itself will easily interfere with inspection. Therefore, the hinge portion 207 is preferably provided below the service hole 203.

[0078] In FIGS. 12 to 15, the engine cover 206 is formed in a flat plate shape larger than the outer edge of the service hole 203. On the surface of the engine cover 206 on the side of the vertical plate portion 202, an insulator 208 as an example of a heat insulation portion is supported. The insulator 208 is disposed along the outer periphery of the engine cover 206 and is arranged to contact the vertical plate portion 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. In addition to the insulator 208, it is desirable to have a configuration in which a heat insulation material, a heat shielding material, a soundproof material, etc. are also attached to the surface of the engine cover 206.

[0079] In FIGS. 12 to 16, a lock member 211 as an example of a fixing portion is disposed at the upper part of the engine cover 206. In the embodiment, a pair of left and right (a total of two) lock members 211 are arranged and are disposed at both left and right ends of the engine cover 206. Note that the number of lock members 211 is not limited to two, and it is possible to have only one or three or more.

[0080] In FIG. 16(A), the lock member 211 has a knob bolt 212 that penetrates the engine cover 206 and is rotatably supported by the engine cover 206. A knob 213 as an example of a handle portion is disposed inside the cabin 12 on the knob bolt 212.

[0081] Outside the cabin 12 of the knob bolt 212, a hook 214 as an example of a hooking and fixing portion is supported. The hook 214 of the embodiment is supported by the knob bolt 212 in a state of being sandwiched by two nuts 215, 215 attached to the bolt portion of the knob bolt 212. Further, a spacer 216 for gap adjustment is 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 positions of the knob 213 and the hook 214, or improve the sliding to suppress the frictional force and frictional noise during the rotation operation. Note that as the spacer 216, it is possible to use a washer 216a made of metal, or a washer 216b made of fluororesin having low friction and good slidability.

[0082] Also, instead of the washer 216a and the nut 215 on the washer 216a side, as shown in FIG. 16(B), it is also possible to adopt a configuration in which an insulator 208 is provided up to between the hook 214 and the engine cover 206.

[0083] In FIG. 15, on the engine cover 206, adjacent to the lock member 211, a stopper 217 as an example of a stop member is arranged. The position of the stopper 217 is arranged corresponding to the edge of the insulator 208, so that it is easy to use as a mark and a guide when attaching the stopper 217. The stopper 217 restricts the rotation of the lock member 211 so that the lock member 211 does not rotate too much. The stopper 217 of the embodiment is configured such that in a state where the hook 214 is in contact with the lock 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.

[0084] Therefore, by the operator grasping and rotating the knob 213 of the knob bolt 212, the hook 214 can be rotated, and with the tip of the hook 214 moved above the upper edge of the service hole 203, the engine cover 206 can be held (locked) in the closed position. By rotating the knob bolt 212 from this state so that the tip of the hook 214 moves below the upper edge of the service hole 203, the lock is released and the engine cover 206 can be opened and closed about the hinge portion 207.

[0085] In addition, a protrusion on which the hook 214 catches is provided outside the cabin 12 of the vertical plate portion 202, and it is also possible to adopt a configuration in which the hook 214 is hooked on the protrusion to apply a lock.

Explanation of Signs

[0086] 1... Working vehicle, 2... Vehicle body, 11... Travel device, 12... Cabin, 13... Mowing device, 16... Threshing device, 51... Engine, 59... First transmission member, 60... Second transmission member, 76... Transmission mechanism, 81... Cabin roof, 81a... Covering portion, 101... Cover, 102... Headlamp, 103... Support member, 106... Central portion in the left - right direction, 107... Cover mounting portion, 108... Reinforcing portion, 109... Retreating portion, 112... Mounting portion of the headlamp.

Claims

1. A vehicle body (2) having a cabin (12) for an operator to board, A traveling device (11) disposed below the vehicle body (2) for traveling the vehicle body (2), A mowing device (13) disposed adjacent to the cabin (12) for mowing cereal straw from a field, A transmission mechanism (76) at least partially disposed between the cabin (12) and the mowing device (13) for transmitting drive from an engine (51) to the mowing device (13), A cabin roof (81) having a covering portion (81a) covering above the transmission mechanism (76) disposed between the cabin (12) and the mowing device (13) and constituting the roof of the cabin (12), The transmission mechanism (76) having a first transmission member (59) for transmitting drive from the engine (51) to the mowing device (13) and a second transmission member (60) for transmitting drive from the engine (51) to the traveling device (11), The covering portion (81a) covering above the first transmission member (59) and the second transmission member (60), A cover (101) covering a portion where the cereal straw cut by the mowing device (13) is taken over by a threshing device (16), A headlight (102) provided on the cover (101), A support member (103) for supporting the headlight (102) and capable of adjusting the vertical position of the headlight (102), A combine (1) characterized by comprising the above.

2. A support member (103) having a central portion (106) in the left - right direction formed linearly, a front - side cover mounting portion (107) for mounting the cover (101), a reinforcing portion (108) connecting the left and right front - end portions of the cover mounting portion (107), a headlight mounting portion (112) for mounting the headlight (102), and rearward - sloping portions (109) provided on both sides in the left - right direction and sloping rearward toward the side, and the headlight mounting portion (112) is disposed in a posture parallel to the rearward - sloping portions (109), The combine (1) according to Claim 1, characterized by comprising the above.

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