JP2015065920A - Cockpit of work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cockpit of a work vehicle in which a front cover for covering the front side of a seat is attached and supported to a support frame installed upright from a chassis frame side, attachment work of the front cover is easy, and attachment strength is excellent.SOLUTION: A front cover 21 for covering the front side of a seat 19 is attached and supported to a support frame 78 installed upright from a chassis frame 2a side, a columnar attachment part 78b extending in the vertical direction is formed in the support frame 78, an engaging groove 93 whose rear side is opened so that the peripheral surface of the attachment part 78b is engaged therewith in a fitting state is formed in the front cover 21, and a range at least from a middle part to a lower end of the engaging groove 93 is made to be an enlarged part 93a formed in such a tapered shape that a space in the groove is gradually enlarged downward.

Description

  The present invention relates to a cockpit of a work vehicle.

  2. Description of the Related Art A cockpit for a work vehicle is known in which a front cover that covers the front of the seat is attached to and supported by a support frame that is erected upward from the chassis frame side.

Japanese Patent Laid-Open No. 2006-340631

  In the cockpit of a work vehicle described in the above document, it is necessary to align the front cover when attaching it to the support frame, which takes time and labor, and depending on the position of the front cover attached to the support frame, The strength may be insufficient.

  The present invention supports a front cover that covers the front of a seat on a support frame that is erected upward from the chassis frame side, so that the front cover can be easily attached and has a good installation strength. It is an issue to provide.

  In order to solve the above-described problem, first, a front seat 21 that covers the front of the seat 19 is a cockpit of a work vehicle in which the front cover 21 is mounted and supported on a support frame 78 that is erected upward from the chassis frame 2a side. The support frame 78 is formed with a column-shaped mounting portion 78b extending in the vertical direction, and the rear side is opened to the front cover 21 so that the peripheral surface of the mounting portion 78b is engaged in a fitted state. The engagement groove 93 is formed, and at least the range from the middle part to the lower end of the engagement groove 93 is an enlarged part 93a formed in a tapered shape in which the space in the groove gradually expands downward. It is a feature.

  Second, the flat cross-sectional shape of the engagement groove 93 is formed into a semicircular shape in which the front half of the peripheral surface of the attachment portion 78b is fitted and accommodated.

  Third, a notification device 91 that performs notification by sound is installed on the back side of the front cover 21, and the sound from the notification device 91 is output to the front of the front cover 21 at a portion of the front cover 21 on the notification device 91 side. An output hole 86b is formed, and on the inner surface side of the front cover 21, a rib-shaped wall portion 92 that covers at least a part of the periphery of the notification device 91 is formed so as to prevent water from the output hole 86b. The wall 92 functions as a soundproof wall that prevents sound leakage from the notification device 91 to the surroundings and promotes sound output to the front.

  The front cover can be mounted and supported on the support frame by engaging the peripheral surface of the columnar mounting portion formed on the support frame in the engaged state in the engagement groove of the front cover. The mounting operation of the cover to the support frame is simplified and the mounting strength is improved, and the mounting operation is further simplified by the tapered enlarged portion of the engaging groove, so that the manufacturing cost can be easily kept low. Become.

  According to the flat cross-sectional shape of the engagement groove formed into a semicircular shape in which the front half of the peripheral surface of the attachment portion is fitted and accommodated, the attachment portion is more stably engaged in the engagement groove. It becomes possible to make it.

  A notification device for performing sound notification is installed on the back side of the front cover, and an output hole for outputting sound from the notification device to the front of the front cover is formed in the notification device side portion of the front cover. On the inner surface side of the cover, a rib-like wall portion that covers at least a part of the periphery of the notification device is formed so as to prevent water from entering from the output hole, and the wall portion prevents sound leakage from the notification device to the surroundings. According to what also functions as a soundproof wall that promotes sound output to the front, the rib-like wall part contributes to the improvement of the waterproofing effect and the sound quality, so the number of parts is reduced. It becomes easy to keep the manufacturing cost low.

It is a side view of a combine to which the present invention is applied. It is a top view of a combine to which the present invention is applied. It is a front view of a combine to which the present invention is applied. It is a principal part perspective view of a cockpit. It is a principal part top view of a cockpit. (A), (B) is the upper surface side perspective view and lower surface side perspective view of a side panel, respectively. It is a right view which shows the structure of the grip part of a main transmission lever. It is explanatory drawing of the display panel which is a panel member installed in the integral part upper surface of an extension part. (A) is an external view of the operation panel which is a panel member installed on the detachable body upper surface of the extension part, (B) is an external view of the substrate for the operation panel of (A), (C) It is an external view of an auger remote control. It is a perspective view which shows the frame structure of a cockpit. It is a principal part side view which shows the support structure of a side panel. It is a principal part perspective view which shows the support structure of a side panel. It is a perspective view which shows the main wiring structures of a cockpit. It is a perspective view of the lower surface side of a front cover. (A) is a rear view of a front cover, (B) is a perspective view which shows the principal part structure of (A). (A), (B) is a side view which respectively shows the attachment structure to the front side support frame of a front panel according to the order of an attachment operation | work. It is a principal part perspective view which shows the structure of an exterior cover and an operation panel. (A), (B) is the front side perspective view and rear side perspective view of an exterior cover and an operation panel. FIG. 2 shows the configuration of the Glen tank side, (A) is a perspective view with a lower cover removed, and (B) is a perspective view with a lower cover attached. It is a principal part perspective view of the cockpit seat switched to the shortened state. It is explanatory drawing of the panel member installed in the upper surface of the extension part shown in FIG.

  1 to 3 are a side view, a plan view, and a front view of a combine to which the present invention is applied. A combine that is a type of work vehicle shown in the drawing (more specifically, a self-removable combine) includes a traveling machine body 2 having a pair of left and right crawler traveling devices 1L and 1R, and a front portion of the traveling machine body 2 And a pre-processing unit 3 that is connected so as to be able to be lifted and lowered and performs a grain reaping operation.

  The traveling machine body 2 is installed on a chassis frame (airframe frame) 2a supported by the left and right crawler type traveling devices 1L and 1R, and a left side (hereinafter, simply “left”) side portion on the chassis frame 2a. The threshing device 5, the grain tank 4 installed on the right side (hereinafter simply “right”) side portion on the chassis frame 2 a, and the grain tank 4 on the chassis frame 2 a are disposed in front of the grain tank 4. A cockpit 6 and an auger 7 disposed on the rear side of the Glen tank 4 are provided.

  A feed chain 8 in the front-rear direction is disposed on the left and right outer side portions (specifically, the left side portion) of the threshing device 5, and a portion located on the left and right inner sides of the feed chain 8 in the threshing device 5 is not illustrated. A threshing chamber is formed, and a sorting chamber (not shown) is arranged and formed immediately below the threshing chamber in the threshing device 5, and a part of the outer side (specifically, the left side) of the threshing chamber and the upper part are the threshing cover 9. The cover is openable and closable. Incidentally, the threshing cover 9 is supported so as to be pivotable up and down with the right end, which is its left and right inner end, as a fulcrum, and the handling chamber is opened and closed by this up and down rotation.

  The Glen tank 4 is a container for storing grains such as straw obtained by the threshing process and the sorting process of the threshing device 5.

  The auger 7 includes a vertical cylinder 11 that protrudes directly above the chassis frame 2a and rotates about its own axis, and a discharge cylinder 12 that is supported on the upper end of the vertical cylinder 11 so as to be swingable up and down. A discharge port 7 a that is opened downward is formed at the tip of 12. The middle part of the auger 7 has a foldable structure, and the foldable structure allows the discharge tube 12 to be switched between a stored state in which it is folded in two and a discharged state that extends in a straight line. Configured to be possible.

  The auger 7 with the discharge cylinder 12 in the discharge state is turned horizontally by turning the vertical cylinder 11 about the axis, and moved up and down by the vertical swing of the discharge cylinder 12 so that the discharge port 7a has front and rear left and right positions and upper and lower positions. The position is adjusted, and the grains conveyed from the Glen tank 4 through the vertical cylinder 11 and the discharge cylinder 12 are discharged to the outside through the discharge port 7a.

  The said pre-processing part 3 occupies the range from the left end of the traveling body 2 to the middle part of the cockpit 6 in front view. The pre-processing unit 3 has a plurality of pulling devices 13 arranged side by side so as to pull up the cereals in the field, and projects forward from the lower end side of the pulling device 13 to the pulsators on the side of the pulling devices 13. A divider 14 for weeding, a regipro-type cutting blade 16 that reciprocates in the left-right direction so as to cut the stocker side of the grain straw, and a transport device 17 that transports the harvested grain straw backward. ing.

  In the pre-processing unit 3, while the traveling machine body 2 travels forward, the culm in the field is pulled up by the pulling device 13, and the pulled culm is pulled toward the pre-processing unit 3 by the transport device 17 and the cutting blade 16. Thus, the root side is cut and harvested, and the harvested corn straw is conveyed backward to the threshing device 5 side of the traveling machine body 2 by the conveying device 17.

  In the combine having the above configuration, the traveling machine body 2 is moved forward while being driven in a state in which the preprocessing unit 3 is lowered, and the cereal harvesting operation in the field is performed. The stocker side of the cereal that has been cut and transported backward by the preprocessing unit 3 is passed to the feed chain 8. The cereal with the stock side held by the feed chain 8 is conveyed rearward by the feed chain 8 with the tip side inserted into the threshing chamber.

  In this rear transfer process, the cereals that have been handled and shed (threshing processing) by a handling cylinder that is rotationally driven around a longitudinal axis in the handling chamber are discharged out of the machine from the rear as they are. Or after being cut and discharged from behind the machine,

  In addition, the processed product separated from the cereal by the threshing process falls into the sorting room directly below. The fallen processed material is subjected to oscillating selection and wind selection in the sorting room, and is separated into grains such as straw and other discharges, and the grains are transported and accommodated in the glen tank 4 while being discharged. The object is discharged from the rear end side of the traveling machine body 2 to the outside of the machine.

  In addition, in the said process, the insertion amount to the threshing room of a cereal is changed by changing the stock position at the time of delivering a cereal to the feed chain 8, and the treatment depth of a handling cylinder changes by changing the amount of insertion. To do. For this reason, the handling depth conveyance body 18 which performs the change of the position where the said corn flour is hold | maintained by rocking | fluctuation operation | movement is provided in the conveyance downstream of the conveying apparatus 17. FIG.

  Next, the configuration of the cockpit 6 will be described with reference to FIGS.

  4 and 5 are a perspective view and a plan view of main parts of the cockpit. The cockpit 6 includes a seat 19 on which an operator is seated, a front cover 21 that covers the front of the seat 19, a side cover 22 that covers the left and right sides of the seat 19 (left side in the illustrated example), and a seat. 19 is formed by opening a horizontal floor floor step 23 located between the front cover 21 and the lower end side of the front cover 21 and the left and right sides of the seat 19. And a front panel 24 formed at the upper end of the front cover 21, and a side panel 26 formed at the upper end of the side cover 22.

  The front processing unit 3 is moved up and down by swinging back and forth, and the steering operation (turning operation) of the traveling machine body 2 is performed by swinging left and right at the left and right outer portions of the front front portion of the front panel 24. A lever operating tool (elevating lever, steering lever, multi-lever) 27 is installed in a state of protruding upward. On the other hand, an operation tool 28 that is installed at the center of the front cover 21 to turn on and off the front light 25 that illuminates the front is also installed in the left and right inward portions of the front front portion of the front panel 24.

  Further, the rear part of the upper surface of the front panel 24 is an arcuate surface inclined downward to the rear and raised upward in a mountain shape, and the respective parts are driven in the left and right outer parts (the parts closer to the entrance / exit 6a) of the arcuate surface. A key switch 29 that is an engine start / stop operation tool that starts and stops the driving of the engine (see FIG. 19) that generates the power to be driven is disposed so as to be capable of key operation in a state of projecting obliquely upward rearward. Yes.

  With the above arrangement, the key switch 29 can be operated by an operator outside the machine, is easily visible from the cockpit 6 side, and the operability is improved. Further, when it is provided on the right side of the front cover 21, the inserted key moves due to the wind or the like and the front cover 21 is scratched. In this case, this problem is also prevented.

  Incidentally, the engine 31 (see FIG. 18) is accommodated immediately below the seat 19 in the traveling machine body 2. The engine power drives the left and right crawler type traveling devices 1L and 1R, the preprocessing unit 3, the threshing device 5, the auger 7, and the like.

  6A and 6B are a top side perspective view and a bottom side perspective view of the side panel, respectively. The side panel 26 is formed separately from the front panel 24. The side panel 26 is located on the side of the seat 19 and is formed in the front-rear direction, and from the front end of the main body 32 to the front panel 24 in the left-right direction (right side in the illustrated example). And a wall portion 34 that covers a part of the main body portion 32 and the extending portion 33 on the side and the front side that are separated from the seat 19. For this reason, the entire side panel 26 has an L shape in plan view, and the cross-sectional shape is formed in an angle shape with respect to the entire length of the L shape, so that necessary strength is ensured.

  The main body portion 32 of the side panel 26 described above has a horizontal surface with a flat upper surface, and its front half is formed slightly narrower toward the front. A main transmission lever (transmission lever) 36, an auxiliary transmission lever (transmission lever) 37, and an accelerator lever 38 that can be swung are installed on the main body 32 in a state of protruding upward. The main body 32 is provided with guide holes 32a, 32b, and 32c through which the main speed change lever 36, the sub speed change lever 37, and the accelerator lever 38 are individually inserted and oscillated. Incidentally, a working clutch lever 39 that can swing back and forth is provided further rearward of the side panel 36.

  The power from the engine 31 is transmitted in the order of HST → traveling transmission (not shown) and transmitted to the crawler traveling devices 1L and 1R. The main transmission lever 36 is a traveling transmission operating tool for performing a traveling transmission operation via the HST. The auxiliary transmission lever 37 is a type of travel speed changer that performs a travel speed change operation via a travel transmission.

  The main transmission lever 36 is disposed near the seat 19 on the left and right sides of the main body 32 of the side panel 26. When the main transmission lever 36 is positioned at the neutral position in the front-rear direction, the HST is in a neutral state and the left-right swing operation is performed. It becomes possible.

  When the main transmission lever 36 is tilted to the left or right side (right side in the illustrated example), the swing operation can be performed in the forward range, which is the range located in front of the neutral position. When tilted, the swing operation in the reverse range, which is a range located behind the neutral position, is possible. The main speed change lever 36 performs forward / backward swing operation in the forward range to increase / decrease during forward travel, while the main speed shift lever 36 performs forward / backward swing operation in the reverse range to increase / decrease in reverse travel.

  FIG. 7 is a right side view showing the configuration of the grip portion of the main transmission lever. A pair of upper and lower installation holes 41a and 41a for installing a switch operating tool are formed in the seat 19 side side (right side) of the grip 41 formed at the upper end of the main transmission lever 36. One of the installation holes 41a is provided with a forced scratching switch 42 which is a momentary-type pushing operation tool, while the other is provided with nothing, so that this portion is covered with a synthetic resin cover. It is blocked by the member 43 to prevent water from entering the grip portion 41.

  In this combine, vehicle speed interlocking control is performed to increase / decrease the driving speed of the pre-processing unit 3 and the feed chain 8 in conjunction with the increase / decrease of the traveling speed, but the forced push-in switch 42 which is a momentary push button switch is provided. During the pushing operation, forced scraping control is executed, and the pre-processing unit 3 and the feed chain 8 are driven at a predetermined speed regardless of the vehicle speed. On the other hand, when the pushing operation is released, the vehicle speed interlocking control is performed. Automatically return to.

  In addition, it is possible to execute the lodging trimming control for trimming the grains that have fallen in the field with the driving speed of the preprocessing unit 3 and the feed chain 8 with respect to the traveling speed being higher than that of the normal vehicle speed interlocking control. A fall switch (not shown), which is an alternate push button switch for switching between execution and stop of cutting control, may be provided in the installation hole 41a in the grip portion 41 where the forced take-in switch 42 is not provided. The cover member 43 is removed. Thereby, it is possible to deal with both cases where the lodging switch is provided and when the lodging switch is not provided with a single member, and the versatility is high and the waterproofness is not sacrificed.

  As shown in FIGS. 4 and 5, the auxiliary transmission lever 37 is disposed in a portion far from the seat 19 on the left and right sides of the main body 32, and performs a shift switching operation of the traveling transmission by swinging back and forth.

  The accelerator lever 38 is disposed directly behind the auxiliary transmission lever 37 in the main body 32, and adjusts the rotational speed of the engine 31 by swinging back and forth.

  The work clutch lever 39 performs an intermittent operation of power transmission (power transmission to the work system) from the engine 31 to the threshing device 5, the feed chain 8, or the pretreatment unit 3 by swinging back and forth. In this example, the threshing clutch (not shown) for intermittently transmitting power from the engine 31 to the auger 7, the threshing device 5 and the feed chain 8 by swinging the work clutch lever 39 back and forth, and the threshing device 5 to the preprocessing unit 3. Intermittently operate a cutting clutch (not shown) that intermittently transmits power to the

  The extension portion 33 of the side panel 26 described above is continuously formed up to a position reaching the front panel 24 and connected to the front panel 24 as shown in FIGS. The extending portion includes an integrated portion 44 integrally formed at the front end portion of the main body portion 32, and a detachable body 46 that extends further from the integrated portion 44 toward the front panel 24 and is formed separately from the main body portion 32. The integrated portion 44 and the detachable body 46 are arranged side by side and are connected to each other so as to be freely disengaged from each other, and the upper surfaces thereof are smoothly connected to each other to form a single upper surface of the extending portion 33. The single upper surface forms an inclined surface that is inclined downward to the rear. In addition, since the inclined upper surface of the extending portion 33 is smoothly connected to the flat upper surface of the main body portion 32, the design is good, and there is no foreign matter between the main body portion 32 and the extending portion 33. Can be prevented from accumulating.

  Further, panel members 47 and 48 made of an operation panel, a display panel, or the like are installed on the upper surface of the integral part 44 and the detachable body 46. Due to the inclined upper surface of the extending portion 33, the panel members 47 and 48 installed on the integrated portion 44 and the detachable body 46 are also inclined downward, so that the operator standing on the cockpit 6 or the seat 19 In addition to improving the visibility from the seated operator, when water or dust adheres, the water or dust slides backward due to the inclination and falls. Incidentally, wiring to the panel members 47 and 48 is performed from the lower surface side of the side panel 26.

  The end of the detachable body 46 that is connected to the front panel 24 is integrally formed with a reinforcing wall 46a that extends downward from the upper surface side, thereby improving strength and increasing the contact area with the front panel 24. Yes.

  In the cockpit 6 of the present invention, the extending portion 33 may be configured by only the integral portion 44 without providing the detachable body 46. In this case, the integral portion 44 is directly attached to the front panel 24. It is connected (see FIG. 20), and can be used for a cockpit 6 that has a shorter left and right width than that of FIGS.

  That is, the extending portion 33 has an extended state in which the left and right lengths are extended by attaching the detachable body 46 that further extends the extending portion 33 to the front panel 24 side, and the left and right long side without attaching the detachable body 46. Since it can be switched to a shortened state in which it is shortened, and it can be used for a combine of two different sizes, it is highly versatile. In other words, the detachable body 46 functions as a nesting of a member (specifically, a member made up of the main body portion 32, the integral portion 44, and the wall portion 34) that is integrally formed with a mold.

  The wall portion 34 of the side panel 26 described above rises right above the upper surfaces of the main body portion 32 and the integral portion 44, and from the rear end of the side end portion of the main body portion 32 on the side far from the seat 19, It is continuously formed in an L-shaped range in plan view that reaches the front end portion of the integrated portion 44. A space is provided between the wall portion 34 and the accelerator lever 38, the auxiliary transmission lever 37, and the main transmission lever 36 provided on the side panel 26 so as not to interfere with the swinging operation.

  The cross-sectional shape of the wall portion 34 is a U-shaped groove-shaped cross section with the lower part open, and the inside is formed on a hollow. In the range from the rear end of the wall portion 34 to the midway portion, a hook-shaped mounting seat 49 that protrudes toward the side away from the seat 19 and extends in the front-rear direction is integrally formed in a state of being located on the lower end side of itself. Has been. In addition, a pair of left and right mounting seats 51, 51 are integrally formed at the rear end of the main body 32.

  A rib-shaped reinforcing portion 34a that increases its own strength is integrally formed in a portion (specifically, a rear portion and a midway portion) adjacent to the mounting seat 49 in the front-rear direction within the groove-shaped cross section of the wall portion 34. Has been. In addition, the rear end portion of the wall portion 34 is integrally formed with an enlarged portion 34b that enlarges the left-right width and forms a square shape in plan view. The enlarged portion 34b is configured to smoothly separate the threshing device 5 and the cockpit 6 from the front end portion of the wide front-rear partition wall 52 (see FIGS. 1 and 3) located behind the side cover 22. Connected to improve strength and maintain good design.

  Further, at least a part of the side and front of the panel members 47 and 48 installed in the extending portion 33 is covered by the wall portion 34, and the visibility of the panel member may be lowered by light such as the sun. Is prevented.

  FIG. 8 is an explanatory diagram of a display panel which is a panel member installed on the upper surface of the integral part of the extending part. The panel member 47 shown in the figure installed on the upper surface of the integral part 44 has a meter 53 for displaying the engine speed disposed near the lever operating tool 27, and lamps such as a left turn lamp 47a and a right turn lamp 47b are meters. 53 is disposed near the portion. By the way, the right end of the above-mentioned preprocessing unit 3 reaches the vicinity of the left end of the front panel 24, and there is a possibility of interference, but the lever which is the side away from the center of the preprocessing unit 3 is the meter 53 and the lamps. Since it arrange | positions at the operation tool 27 side, mutual interference is suppressed.

  Further, the panel member shown in FIG. 8 is a plan view in which the seat 19 and the leftmost divider 14 are connected by a virtual line, or the middle part of the virtual line, or the seat 19 and the handling depth carrier 18 are connected. It is arranged in the middle of the virtual line when connected by a virtual line (see FIG. 2). Thereby, the visibility of the panel member 47 at the time of confirmation of the pre-processing part 3 or the handling depth conveyance body 18 improves.

  FIG. 9A is an external view of an operation panel which is a panel member installed on the upper surface of the detachable body of the extending portion, and FIG. 9B is an external view of the operation panel substrate of FIG. ) Is an external view of an auger remote control. The panel member 48 shown in the figure installed on the upper surface of the detachable body 46 has a push button type operation tool 54 for operating on / off of the depth control that automatically changes the depth of treatment according to the length of the culm. A notification lamp 56 for notifying execution and stop of the handling depth control, a pair of push button type operating tools 57 and 58 for manually operating the handling depth transport body 18, and automatically stopping the preprocessing unit 3 when it is raised. The push button type operation tool 59 for operating on / off of the stop control to be performed, the notification lamp 61 for notifying the execution and stop of the stop control, and the feed chain 8 and the threshing device 5 in a state in which the preprocessing unit 3 is stopped. A push button type operating tool 62 for operating on / off of the handling control for driving the handling operation by driving, and a notification lamp 63 for notifying the execution and stop of the handling control are provided.

  Detection switches 54 a, 57 a, 58 a, 59 a, 62 a are individually arranged directly below the push button type operation tools 54, 57, 58, 59, 62, and LEDs are also provided directly below the notification lamps 56, 61, 63. The detection switches 54a, 57a, 58a, 59a, 62a and the light sources 56a, 61a, 63a are arranged on the substrate 64.

  The substrate 64 can also be applied as a substrate for an auger remote controller 66 for remotely operating the auger 7. The auger remote controller 66 includes a pair of push button type operating tools 67 and 68 for turning the auger 7 left and right, a pair of push button type operating tools 69 and 71 for swinging the auger 7 up and down, and the auger 7 in a predetermined manner. When the auger 7 can be expanded and contracted, the pair of push button type operating tools 73 and 74 for expanding and contracting the auger 7 and the auger 7 are automatically swung. And a notification lamp 76 indicating that the vehicle is in the middle of being in operation.

  On the substrate 64, detection switches 67a, 68a, 69a, 71a, 72a, 73a, 74a for individually detecting the operations of the push button type operating tools 67, 68, 69, 71, 72, 73, 74, a notification lamp The light source 76a of 76 is provided, and this arrangement position is set to be substantially the same as the installation position of the push button type operation tools 54, 57, 58, 59, 62 and the notification lamps 56, 61, 63 of the panel member 48. The substrates 64 are highly versatile because they are also used in common.

  Further, the panel member shown in FIG. 9A is disposed in the middle of the virtual line when the seat 19 and the rightmost divider 14 are connected by a virtual line in plan view (see FIG. 2). ). Thereby, the visibility of the panel member 48 at the time of confirmation of the pre-processing part 3 improves.

  Next, the support structure for the side cover 22 and the side panel 26 will be described in detail with reference to FIGS. 4, 5, and 10 to 12.

  FIG. 10 is a perspective view showing a frame structure of a cockpit, and FIGS. 11 and 12 are a side view and a perspective view of a main part showing a support structure of a side panel. The right side portion of the chassis frame 2a protrudes further forward than the left side portion to form a pilot side frame 77, and the pilot seat 6 is erected on the pilot side frame 77 constituting a part of the chassis frame 2a. .

  A front side support frame (support frame) 78 having a reverse U-shape when viewed from the front is disposed on the front end side of the control side frame 77 where the front panel 24 and the front cover 21 are provided. On the side end side where the front cover 21 is provided, a side-side support frame (support frame) 79 that is linear in the front-rear direction is arranged in plan view. The two support frames 78 and 79 are arranged on the back side of the front cover 21. Are connected and fixed by a front frame 81 in the left-right direction that is in close proximity to each other.

  The front support frame 78 is configured by bending a metal round pipe. The lower end side of the front side support frame 78 is directly attached and fixed to the chassis frame 2a. Between the pair of left and right columnar portions 78a and 78b extending in the vertical direction of the front side support frame 78, a front side bracket 82 for connecting the two at intermediate positions in the vertical direction is installed and fixed. It is a channel-shaped member with the rear opened. The front panel 24 is housed and supported on the inner surface side of the front side bracket 82, and the front frame 81 is fixed to the front side support frame 78 via the front side bracket 82.

  Of the pair of left and right columnar portions 78a and 78b of the front side support frame 78, the columnar portion 78b on the entrance / exit 6a side is inclined forward at the lower portion thereof, and the middle portion and upper portion thereof are directed upward. It becomes the attachment part of the shape of a dogleg shape which inclines back. A part of the front cover 21 is attached to the attachment portion 78b. Details will be described later.

  In addition, the inverted U-shaped upper portion of the front support frame 78 serves as a grip portion 78c gripped by the operator of the cockpit 6, and holds the lever operation tool 27 when the lever operation tool 27 is swung. It also serves as an armrest for placing the arm on the side to be used. The grip / armrest 78c may be formed in the entire range above the front cover 21 (the entire width of the cockpit 6), but avoids interference with the preprocessing unit 3 when it is lifted. For this purpose, it is formed only in the lever operation tool 27 side range (specifically, the range directly behind the upper part of the lever operation tool 27).

  Further, when viewed from the upper side, the grip portion 78c has the lever operating tool 27 positioned in the front and the key switch 29 positioned in the rear, so that it can be easily seen by the operator standing at the cockpit 6. If the lever operating tool 27 is held with the left hand and the holding part 78c is held with the right hand, the posture can be stabilized and the operation can be executed smoothly.

  The side support frame 79 has a front end attached and fixed to the chassis frame 2 a via a vertical stay 83 and a rear end attached and fixed to the threshing frame 5 a which is a frame of the threshing device 5. The side-side support frame 79 is configured to support and support the side panel 26, in addition to the side cover 22 being attached and supported, as well as being positioned directly below the side panel 26. Specifically, the rear end portion of the mounting seat 49 on the side 34 of the side panel 26 and the pair of left and right mounting seats 51, 51 of the main body 32 are detachably attached to the side support frame 79 side. In addition to being fixed, the front side of the side panel 26 is also detachably attached to the front frame 81 and the like.

  And the rear part of the wall part 34 in which such high strength is directly attached and fixed to the support frames 78 and 79 and the strength of the reinforcing part 34a is improved, the threshing device 5 and the pretreatment part 3 side are connected. It can also function as a part to be grasped when peeping.

  FIG. 13 is a perspective view showing the main wiring structure of the cockpit. As shown in the figure, through a gap formed between the side panel 26 and the side support frame 79, various operating tools installed on the side panel 26 and the front panel 24 and operations of the operating tools are detected. Wiring of various electrical components such as various sensors and notification lamps. In the example shown in the figure, a harness 84 that electrically connects them to necessary portions is wired directly below the side panel 26 and on the flat upper surface side of the side support frame 79.

  With such a wiring structure, the harness 84 can be stably wired, and the positional shift of the harness 84 is prevented, and the wiring location is clarified, so that the wiring work is also made efficient.

  Next, the configuration of the front cover 21 will be described in detail with reference to FIGS. 3 to 5 and FIGS. 14 to 16.

  FIG. 14 is a perspective view of the lower surface side of the front cover, FIG. 15A is a rear view of the front cover, FIG. 14B is a perspective view showing the main configuration of FIG. (A), (B) is a side view which respectively shows the attachment structure to the front side support frame of a front panel according to the order of an attachment operation | work. The front cover 21 has a main body cover portion 86 formed in an arc shape that bulges in a front shape in a plan view, and a rib shape outward from the side edge portion of the main body cover portion 86 on the entrance / exit 6a side. A side-side mounting seat portion 87 projecting from the side, a sub-cover portion 88 projecting in a rib shape from the side edge of the main body cover portion 86 on the side opposite to the entrance 6a to the front side of the extension portion 33, and the main body cover portion A lower end side mounting seat 89 extending rearward from the lower end of 86 is integrally provided.

  The front surface of the main body cover portion 86 is raised in a mountain shape in front as viewed from the side, and the whole protrudes forward with respect to the side portion side mounting seat portion 87 and the sub cover portion 88. In the central portion of the main body cover portion 86, an installation hole 86a for installing the above-described front light 25 by fitting is formed, and a buzzer sound or the like is formed near the upper portion of the installation hole 86a in the main body cover portion 86. The output hole 86b for outputting the notification sound to the front of the front cover 21 is formed. The output hole 86b is configured by arranging a plurality of slit-like holes in the left-right direction vertically.

  The front light 25 is fitted into the installation hole 86 a from the back surface side of the main body cover portion 86 and faces the front surface side of the front cover 21. At this time, the formation of a gap between the installation hole 86a and the front light 25 is prevented as much as possible, and the risk of flooding or the like is reduced.

  A notification device 91 that performs various notifications using a notification sound such as a buzzer sound is attached and supported on the output hole 86 a side on the back surface of the main body cover portion 86. In the range from the lower side to the side surface around the notification device 91, a wall portion 92 that protrudes rearward from the back side (inner surface side) of the front cover 21 in a rib shape and separates the notification device 91 from the front light 25. Is formed.

  The wall portion 92 has a waterproof function for receiving foreign matter such as muddy water that has entered the inner surface side of the front cover 21 from the outer surface side of the front cover 21 through the output hole 86a and preventing the foreign matter from being immersed in the front light 25 side. In addition, the sound output to the front side from the notification device 91 is also exhibited as a soundproof wall that guides the sound forward without causing the sound to leak downward or sideward to the surroundings, thereby improving the sound.

  The side surface shape of the side portion side mounting seat portion 87 has a dogleg shape along the mounting portion 78b described above, and the flat cross-sectional shape thereof is a mounting portion having a cylindrical shape in which the outer peripheral cross-sectional shape is formed in a circle. Along the outer periphery of 78b, it is raised in the shape of a mountain and is formed in an arc shape. Due to the arc shape, the side-side mounting portion 87 is formed with a concave engagement groove 93 that is open at the rear side over the entire range in the vertical direction.

  The inside of the engagement groove 93 is formed in a semicircular shape so that the front half periphery on the outer peripheral surface of the mounting portion 78b is fitted and engaged. In other words, the space inside the engagement groove 93 has a semicircular shape for accommodating in a sectional view. In addition, the range from the midway part to the lower end of the engaging groove 93 is an enlarged part 93a in which the space in the groove gradually expands downward.

  Specifically, a range of about 1/3 from the bent portion to the lower end of the side-side mounting seat portion 87 becomes an enlarged portion, and in the enlarged portion 93a, the front and rear groove depths gradually increase in a tapered shape. It is molded into a shape that In addition, you may shape | mold in the shape which groove width expands in taper shape with groove depth.

  The lower end side mounting seat portion 89 is formed in a horizontal plane extending rearward from the lower end portion of the main body cover portion 86, and the rearmost end portion reaches the left and right mounting seat portions 87 and 88. A pair of left and right mounting holes 89a and 89a are formed in the lower end side mounting seat portion 89, and a guide groove 89b is recessed forward from the mounting hole 89a.

  The mounting operation of the front cover 21 will be described. First, the left and right guide grooves 89b and 89b are moved upward from the front end of the upper surface of the control side frame 77 with the front cover 21 inclined forward with respect to the mounting portion 78b. Are engaged with a pair of left and right mounting pins 94 projecting from each other.

  When the front cover 21 in a state in which the lateral movement is restricted in this way is moved back and forth and the mounting pins 94 engaged with the guide grooves 89b are inserted into the mounting holes 89a in the guide grooves 89b, The front side of the outer peripheral surface of the portion 78 b is in a state of being accommodated on the enlarged portion 93 a side in the engagement groove 93.

  When the front cover 21 with the lower end side locked to the steering side frame 77 is tilted rearward toward the mounting portion 78b, the mounting is performed in the entire engagement groove 93 formed in the front cover 21. The front half of the outer peripheral surface of the portion 78b is fitted and accommodated and engaged.

  In this state, the sub-cover portion 88 is fixed to the front frame 81 with bolts, and the other portions are also attached and fixed to the front support frame 78 and the front frame 81, and the mounting operation of the front cover 21 is completed. The mounting operation is performed quickly and smoothly by engaging the guide groove 89b with the mounting pin 94, inserting the mounting pin 94 into the mounting hole 89a, engaging the mounting portion 78b with the engaging groove 89b, and the like. It becomes possible.

  Further, due to the enlarged portion 93a of the engagement groove 93, a positional shift during the attachment work is allowed to some extent, and the work efficiency is further improved. In addition, the external appearance is also satisfactorily held by the side-side mounting seat portion 87 along the outer peripheral surface of the mounting portion 78b.

  In the illustrated example, the right end portion of the preprocessing unit 3 is arranged and formed so as to reach the front side of the sub cover unit 88 but not to the front side of the main body cover unit 86. The extended portion 33 of the side panel 26 is disposed and formed on the upper surface of the sub cover portion 88.

  Next, the other structure of this combine is demonstrated based on FIGS.

  FIG. 17 is a main part perspective view showing the configuration of the exterior cover and the operation panel, and FIGS. 18A and 18B are a front perspective view and a rear perspective view of the exterior cover and the operation panel. An exterior cover 96 is provided on the front side of the threshing cover 9 and the end of the grain tank 4 side. The exterior cover 96 is provided with a lever guide hole 96a through which a discharge lever 97 for vertically swinging operation is inserted to guide the vertical swing, and adjacent to the lever guide hole 96a in the exterior cover 96 on the left and right. A panel installation hole 96b is formed in the portion to be performed.

  As the discharge lever 97 swings up and down, the transmission of engine power to the auger 7 is interrupted, and switching between a discharge state in which the grains in the grain tank 4 are discharged via the auger 7 and a non-discharge state in which the grain is not discharged is performed. Do.

  An operation panel 101 in which a left / right turning operation tool 98 which is a seesaw switch for performing a left / right turning operation of the auger 7 and a lifting / lowering operation tool 99 which is a seesaw switch for performing an up / down swing operation are installed on the front side includes the panel installation hole. The outer cover 96 is positioned from the front side so as to close the cover 96b.

  That is, the operation panel 101 serves as an attachment plate for attaching the left / right turning operation tool 98 and the lifting / lowering operation tool 99 to the exterior cover 96. The operation panel 101 can be fixed from the back side (inner surface side) of the exterior cover 96, and wiring from the back side of the exterior cover 96 to the back side of the operation panel 101 via the panel installation hole 96b. I do.

  Specifically, after positioning the operation panel 101 on the exterior cover 96, the threshing cover 9 is opened to expose the back side of the exterior cover 96, and the wiring harness 102 is connected to the operation panel from the back side. Connect to the back side of the. The harness 102 is wired along the inner surface side of the threshing cover 9.

  According to this configuration, it is possible to perform the wiring work to the operation panel 101 and the attaching / detaching work of the operation panel 101 without removing the outer cover 96, and the maintainability and convenience are improved. Conversely, when the operation panel 101 is removed from the exterior cover 96 and the discharge lever 97 is removed from the lever guide hole 96a, the wiring to the operation panel 101 is completed and the discharge lever 97 is installed. The exterior cover 96 can be removed, and the threshing cover 9 can be opened and closed in this removed state, which is highly convenient.

  FIG. 19 shows a configuration on the side of the Glen tank, (A) is a perspective view with the lower cover removed, and (B) is a perspective view with the lower cover attached. The side of the lower end portion of the Glen tank 4 disposed behind the engine 31 is covered with a detachable lower cover 103. The lower cover 103 extends to the rear side of the Glen tank 4, and the Glen tank 4 The battery 104 disposed behind the lower end of the battery and the outer side of the wiring cord 106 to the battery are also covered.

  Next, the structure of the combine switched to the shortened state will be described with reference to FIGS.

  FIG. 20 is a perspective view of the main part of the cockpit seat switched to the shortened state, and FIG. 21 is an explanatory view of the panel member installed on the upper surface of the extending part shown in FIG. The extending portion 33 shown in the figure is configured only by the integral portion 44 shown in FIGS. 4 and 5.

  On the lever operation tool 27 side half of the panel member 47 installed in the extension 33, the same push button type operation tools 54, 57, 58, 59, 62 and notification as shown in FIG. The lamps 56, 61, and 63 are installed in the same arrangement, and the same board can be used, and the parts can be shared, thereby further reducing the manufacturing cost. Is possible.

  In addition, a plurality of notification lamps for notifying various states are arranged on the half of the panel member 47 opposite to the lever operation tool 27. Specifically, a notification lamp 107 for notifying the high load of the preprocessing unit 3, the high load of the threshing device 5, the notification lamp 108 for notifying the start of the engine 31 and the high load of the engine 31, and the battery 104 are provided. A notification lamp 109 that notifies that charging is in progress, a notification lamp 111 that notifies that dredging is being performed, a notification lamp 112 that notifies that the Glen tank 4 is full, and the like are provided. .

  Thus, by appropriately changing the type of the panel member 47 provided on the extending portion 33 side, it becomes possible to appropriately cope with the size of the combine and the required function.

2a Chassis frame 19 Seat 21 Front cover 78 Front support frame (support frame)
78b Mounting portion 86b Output hole 93 Engaging groove 93a Enlarged portion 91 Notification device 92 Wall portion

In this rear transfer process, the cereals that have been handled and shed (threshing processing) by a handling cylinder that is rotationally driven around a longitudinal axis in the handling chamber are discharged out of the machine from the rear as they are. Alternatively, after being cut, it is discharged out of the machine from the rear .

Claims (3)

  A control seat of a work vehicle in which a front cover (21) that covers the front of a seat (19) is attached to and supported by a support frame (78) that is erected upward from the chassis frame (2a) side. In (78), a columnar mounting portion (78b) extending in the vertical direction is formed, and the peripheral surface of the mounting portion (78b) is engaged with the front cover (21) in a fitted state. An engagement groove (93) having a rear opening is formed in the groove, and at least a range from the middle portion to the lower end of the engagement groove (93) is formed in a tapered shape in which the space in the groove gradually expands downward. A pilot seat of the work vehicle as the enlarged portion (93a).   The cockpit of the work vehicle according to claim 1, wherein the engaging groove (93) has a flat cross-sectional shape formed into a semicircular shape in which a front half of the peripheral surface of the mounting portion (78b) is fitted and accommodated.   A notification device (91) for performing notification by sound is installed on the back side of the front cover (21), and the sound from the notification device (91) is transmitted to the notification device (91) side portion of the front cover (21). An output hole (86b) for outputting to the front of the front cover is formed, and at least the periphery of the notification device (91) is provided on the inner surface side of the front cover (21) so as to prevent water from entering the output hole (86b). A rib-shaped wall portion (92) that covers a part is formed, and the wall portion (92) prevents sound leakage from the notification device (91) to the surroundings and promotes sound output to the front. The cockpit of the work vehicle according to claim 1, which also functions as a wall.

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