JP2011234653A - Cover mounting structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a failure generated between a cover member and a boarding operation part due to production errors or attachment errors without deterioration of productivity.SOLUTION: Mounting of a grain tank 9 on the cover member 45 is performed by engagement between front and rear engagement pieces 48, 49 equipped on the bottom of the cover member 45 and front and rear support shafts 46, 47 longitudinally arranged in the grain tank 9, and locking between front and rear locking tools 50 equipped on the top of the cover member 45 and front and rear locking shafts 36A longitudinally arranged in the grain tank 9. The front support shaft 46 includes a screwing shaft 46 in which a circular engagement groove with which the engagement piece 48 is engaged is formed at the end. A screwing part for enabling position adjustment of the engagement groove in a longitudinal direction by screwing of the screwing shaft 46 is equipped in the grain tank 9. An adjustment mechanism 55 for enabling adjustment of mounting positions in the longitudinal direction of the cover member 45 on the grain tank 9 includes the screwing shaft 46 and the screwing part.

Description

  The present invention enables a swinging operation in the left-right direction with a grain tank as a fulcrum provided at the rear end of the grain tank at a position behind the boarding operation part in the body frame. A cover member that covers the lower space portion of the space secured between the boarding operation part and the grain tank in order to allow the grain tank to swing. It is related with the cover attachment structure of the combine attached to the lower part of a grain tank so that attachment or detachment is possible.

  As the above-described combine cover mounting structure, a pair of front and rear grips for the rotation of the Glen tank are provided on the side plate inclined portion of the Glen tank (grain tank), and the lower reinforcement plate on the front plate and the rear plate of the Glen tank. Each of the joint portions is provided, and a lower cover engaging portion that engages with the lower engaging portion is provided at each of the lower portions of the front and rear sides of the tank lower cover (corresponding to the cover member) provided with the lower space cover. An operation handle for the cover-side upper engagement portion that engages with the rotation handle is provided in the part corresponding to the rotation handle on both the front and rear sides of the side cover, and the cover-side lower engagement portion is used as the lower engagement portion. By engaging the upper engaging part with the turning handle, the space for turning the Glen tank between the Glen tank and the control part (equivalent to the boarding operation part) by the lower space cover provided in the tank lower cover. The lower part of As enclose there is configured to attach the tank lower cover the bottom of the grain tank (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 2002-281819 (paragraph numbers 0007 to 0009, FIGS. 2 to 5)

  In the above configuration, it may be caused by manufacturing errors such as the tank lower cover or the lower space cover, the rotation handle assembly error for the Glen tank, or the cover side upper engagement part assembly error for the tank lower cover. When the tank lower cover is attached to the lower part of the Glen tank, there is a large gap between the lower space cover and the control part, or the front end of the lower space cover overlaps with the control part. If such a problem occurs, a considerable amount of labor and time will be spent on the correction work for eliminating such a problem.

  In addition, in order to avoid the occurrence of such problems, it is necessary to improve manufacturing accuracy and assembly accuracy, and it is necessary to spend time to improve accuracy, so it is improved in terms of productivity. There is room for.

  An object of the present invention is to be able to eliminate a problem that occurs between a cover member and a boarding operation unit due to a manufacturing error or an assembly error without causing a decrease in productivity.

In the first problem solving means of the present invention,
In a position behind the boarding operation part in the vehicle body frame, a swinging operation in the left-right direction with the grain tank as a fulcrum and a vertical support shaft provided at the rear end part of the grain tank is enabled. A cover member that covers and covers a lower space portion of the space secured between the boarding operation unit and the grain tank in order to allow swinging operation of the grain tank. In the cover mounting structure of the combine that is detachably attached to the lower part,
The attachment of the cover member to the grain tank includes a front and rear engagement piece provided at a lower portion of the cover member, and a front and rear support shaft disposed in a front-rear direction at a position opposite to the engagement piece in the grain tank. Engagement, or engagement between front and rear support shafts arranged in the front-rear direction at the lower part of the cover member, and front and rear engagement pieces provided at locations opposite to the support shaft in the grain tank, and the cover member The front and rear locking tools provided on the top of the grain tank and the front and rear locking shafts arranged in the front-rear direction at the opposite locations of the locking tools in the grain tank,
Any one of the front and rear support shafts is configured by a screw shaft formed at an end portion of an annular engagement groove with which the engagement piece engages, and the engagement groove formed by screwing of the screw shaft. The grain tank or the cover member is equipped with a screwing part that enables position adjustment in the front-rear direction, and the cover member is attached to the grain tank in the front-rear direction by the screw shaft and the screwing part. An adjustment mechanism that enables position adjustment is configured.

  According to this problem solving means, when the cover member is attached to the lower part of the grain tank, a large gap is generated between the cover member and the boarding operation part, or the front end of the cover member is superposed on the boarding operation part. In the case where troubles due to manufacturing errors or assembly errors occur, the adjustment mechanism is used to adjust the screwed state of the screw shaft with respect to the screwed portion, so that the cover member is moved in the front-rear direction with respect to the grain tank. The mounting position of the cover can be easily fine-tuned, and problems such as a large gap between the cover member and the boarding operation part, or the front end of the cover member overlapping the boarding operation part can be easily done. Can be resolved.

  And after adjusting the attachment position in the front-rear direction with respect to the grain tank of the cover member using the adjusting mechanism, even if the cover member is removed from the grain tank again for maintenance or the like, Since the screwed state of the screw shaft does not change, when attaching the cover member to the grain tank, a large gap is generated between the cover member and the boarding operation unit without performing fine adjustment by the adjustment mechanism. Alternatively, the cover member can be easily attached at an appropriate position without causing a problem such as the front end portion of the cover member overlapping the boarding operation portion.

  Therefore, problems that occur between the cover member and the boarding operation part due to manufacturing errors and assembly errors can be easily eliminated without causing a decrease in productivity. Even if the cover member is removed, the cover member can be easily and reliably attached to an appropriate position where the gap generated between the cover member and the boarding operation section is sufficiently small.

In the second problem solving means of the present invention, in the first problem solving means,
The adjusting mechanism is arranged on the front side of the cover member.

  According to this problem solving means, since the adjustment mechanism is located at a position close to the location where the trouble occurs between the cover member and the boarding operation part due to the production error or the assembly error, the grain by the adjustment mechanism Adjustment of the attachment position of the cover member in the front-rear direction with respect to the tank can be performed while visually recognizing the positional relationship between the cover member and the boarding operation unit.

  Therefore, it is possible to more quickly and appropriately solve the problem that occurs between the cover member and the boarding operation unit due to the manufacturing error or the assembly error.

It is a whole right side view of a self-desorption combine. It is a whole top view of a self-detaching combine. It is a right view of the principal part which shows a grain tank periphery structure. It is a front view of the principal part which shows the structure of a grain tank. It is a rear view of a grain tank. It is a left view of a grain tank. It is a right view of a grain tank. It is a top view of a grain tank. It is a vertical front view of the principal part which shows the attachment structure of a cover member. It is a vertical rear view of the principal part which shows the attachment structure of a cover member. It is a vertical right view of the principal part which shows the structure of an adjustment mechanism.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which a cover mounting structure for a combine according to the present invention is applied to a self-removable combine that is an example of a combine will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the self-removing combine exemplified in this embodiment is configured by connecting a plurality of steel materials such as a square pipe material to form a body frame 1. A pair of left and right crawlers 2 is provided at the lower part of the body frame 1. A diesel engine (hereinafter referred to as an engine) 3 is mounted on the right front portion of the vehicle body frame 1 and a boarding operation unit 4 is formed. At the left front end of the vehicle body frame 1, a cutting and conveying unit 5 that harvests and conveys the crop culm to be harvested that is located in front of the vehicle body during work traveling is connected to be swingable up and down around a horizontal axis. It is. The left half of the vehicle body frame 1 receives the harvested grain cocoon (hereinafter referred to as the harvested grain cocoon) conveyed by the harvesting and conveying unit 5 and conveys it backward to the grain part on the tip side of the harvested corn grain. A threshing device 6 is provided which performs a threshing process and performs a sorting process on a processed product obtained by the threshing process. The rear portion of the threshing device 6 is connected to a waste straw processing device 7 that enables shredded discharge of the waste straw that is the harvested cereal meal after the threshing processing. On the right rear part of the vehicle body frame 1, a grain tank 9 for storing single-grained grains carried out by the lifting screw 8 from the threshing device 6 is mounted. The grain tank 9 is equipped with a screw-conveying type grain discharging device 10 that makes it possible to carry out single grains stored in the grain tank 9 to the outside of the vehicle.

  Although illustration is omitted, the power from the engine 3 is transmitted to the left and right crawlers 2 through a traveling transmission system, is transmitted to the threshing device 6 through a transmission system for threshing sorting, and is used for grain discharge. It transmits to the grain discharging apparatus 10 via a transmission system. Then, the power branched from the traveling transmission system is transmitted to the cutting and conveying unit 5 via the cutting and conveying transmission system. Moreover, the power branched from the transmission system for threshing is transmitted to the waste straw treatment device 7.

  As shown in FIGS. 1 to 3, an engine cover 11 that covers the engine 3 and the like is disposed at the rear of the boarding operation unit 4. A driver seat 12 is mounted on the upper part of the engine cover 11. The engine cover 11 can be pivoted in the left-right direction with the connecting pins 13 as fulcrums on the vehicle body frame 1 via the front and rear connecting pins 13 having front and rear ends at the right lower end. It is connected as follows. In other words, the engine cover 11 covers the engine 3 and the like so that it can be seated on the driver's seat 12 and the maintenance position that opens the periphery of the engine 3 and facilitates maintenance of the engine 3 and the like. Equipped to be able to swing and displace in the direction.

  As shown in FIGS. 1 to 10, the grain tank 9 includes a sheet metal bottom plate member 14 that forms the bottom surface of the grain tank 9, a sheet metal front plate member 15 that forms the front surface of the grain tank 9, and a grain. A sheet metal rear plate member 16 that forms the back surface of the tank 9, a sheet metal front left plate member 17 and a rear left plate member 18 that form the left side surface of the grain tank 9 adjacent to the threshing device 6, and a grain tank. The right plate member 19 made of sheet metal that forms the right side surface 9 and the upper plate member 20 made of sheet metal that forms the upper surface of the grain tank 9 are connected by bolts. Although the reference numerals are omitted, a reinforcing member such as a strip steel plate is attached to each of the plate members 14 to 20 to increase the rigidity.

  The bottom plate member 14 is formed in a substantially V shape when viewed in the front-rear direction provided with left and right inclined surfaces 14A and 14B inclined at an angle larger than the repose angle. In addition, the lower surface of the front left plate member 17 and the lower portion of the rear left plate member 18 are inclined at the same angle as the left inclined surface 14A of the bottom plate member 14 and continue to the left inclined surface 14A of the bottom plate member 14. 17A and 18A are provided. Thereby, the single-grained grain stored in the grain tank 9 can be smoothly flowed down to the bottom of the grain tank 9.

  The front plate member 15 and the rear plate member 16 are bolted to support members 21 and 22 configured to function as legs of the grain tank 9 from a sheet metal material or the like at the lower part thereof. These support members 21 and 22 are configured to be received and supported by the body frame 1 from below.

  In the rear upper part of the front left plate member 17 and the front upper part of the rear left plate member 18, a grain receiving port 9A of the grain tank 9 communicating with the grain discharge port 8A formed in the upper end part of the lifting screw 8 is provided. Notches 17B and 18B for forming in the upper left part of the grain tank 9 are formed. At the rear end portion of the front left plate member 17, a vertically long recess 17 </ b> C for allowing the lifting screw 8 to enter the grain tank 9 is formed. Thereby, while arrange | positioning the lifting screw 8 between the threshing apparatus 6 and the grain tank 9, the left side of the grain tank 9 can be made to approach the threshing apparatus 6, and the capacity | capacitance of the grain tank 9 can be increased. Can be bigger.

  As shown in FIGS. 1 and 3, at the bottom of the grain tank 9, a bottom screw 23 is disposed in the front-rear direction to carry out the single-grained grains stored in the grain tank 9 to the rear of the grain tank 9. It is. A bottom case 24 that covers the rear end portion of the bottom screw 23 that protrudes backward from the grain tank 9 and is exposed is bolted to the lower portion of the rear plate member 16 together with the support member 22 described above.

  The bottom case 24 is integrally formed with a cylindrical support shaft portion 24A extending downward from the bottom portion. At the right rear end of the vehicle body frame 1, there is provided a shaft support portion 1 </ b> A that supports the shaft portion 24 </ b> A of the bottom case 24 so as to be relatively rotatable. The grain tank 9 is mounted on the vehicle body frame 1 so as to be able to swing in the left-right direction with the support shaft portion 24A of the bottom case 24 serving as a support shaft facing upward and downward.

  From this configuration, the grain tank 9 has the support shaft 24A of the bottom case 24 located at the rear end thereof as a fulcrum, and the left side surface of the grain tank 9 is adjacent to the threshing device 6 and the grain of the grain tank 9 The working position where the receiving port 9A communicates with the grain discharge port 8A of the lifting screw 8 and the front side of the grain tank 9 are separated from the threshing device 6 to open the rear side of the engine 3 and the right side of the threshing device 6. It can be swung and displaced in the left-right direction over the maintenance position (see FIG. 2).

  As shown in FIGS. 9 and 11, the front support member 21 is provided with an upside-down L-shaped lock pin 25 having a horizontal gripping portion 25 </ b> A at the top thereof so as to be slidable up and down. The lock pin 25 is biased downward by a compression spring 26. And when the grain tank 9 is located in a work position, it arrange | positions so that the insertion part 25B with which the lower part of the lock pin 25 was equipped will penetrate the engagement hole 1B formed in the vehicle body frame 1. FIG.

  From this configuration, after the grain tank 9 is positioned at the working position, the grain tank 9 is inserted by inserting the insertion portion 25B of the lock pin 25 into the engagement hole 1B of the body frame 1 by the urging force of the compression spring 26. Can be fixed in the working position. Further, by pulling out the insertion portion 25B of the lock pin 25 from the engagement hole 1B of the vehicle body frame 1 against the urging force of the compression spring 26, the fixation at the work position of the grain tank 9 can be released. A swing operation in the left-right direction of the grain tank 9 using the support shaft portion 24A of the bottom case 24 as a fulcrum can be made possible.

  The support member 21 on the front side receives the holding portion 25A of the lock pin 25 that has been pulled up from below, so that the lock pin 25 is unlocked when the insertion portion 25B is extracted from the engagement hole 1B of the body frame 1. 21A is provided with a pin receiving portion.

  As shown in FIGS. 1 to 3, the bottom case 24 is provided with a screw conveying type lifting conveyor 27 that lifts the single-grained grains carried out by the bottom screw 23. Connected to the upper end of the lifting conveyor 27 is a screw transfer type discharge conveyor 28 that transfers the single-grained grains lifted by the lifting conveyor 27 and discharges them to the outside.

  Although illustration is omitted, the transporting conveyor 27 is linked to the bottom screw 23 via a bevel gear. The discharge conveyor 28 is linked to the transporting conveyor 27 via a bevel gear and a laterally linked shaft. Further, the lifting conveyor 27 is configured to be capable of rotating around the screw axis of the lifting conveyor 27 by the operation of an electric motor with a speed reducer.

  As shown in FIGS. 1 to 3, the discharge conveyor 28 pivots and swings in the left-right direction around the screw axis of the lifting conveyor 27 by the turning operation of the lifting conveyor 27. Further, it is configured to be able to perform an up-and-down swinging operation with a horizontal interlocking shaft by a telescopic operation of the hydraulic cylinder 29 as a fulcrum. A discharge port 28 </ b> A that allows the conveyed single-grained grains to be discharged to the outside is formed in the transfer end portion of the discharge conveyor 28.

  That is, the grain discharging device 10 is constituted by the bottom screw 23, the bottom case 24, the lifting conveyor 27, the discharging conveyor 28, the electric motor, the hydraulic cylinder 29, and the like. And by the action | operation of an electric motor and the hydraulic cylinder 29, the discharge position of a single grain can be changed arbitrarily.

  As shown in FIGS. 4 to 6 and 8, the front left plate member 17 and the rear left plate member 18 are rectangular inspection ports that allow an operator to enter and look into the grain tank 9. 17D and 18C are formed. In addition, sheet metal lid members 30 and 31 for closing the inspection ports 17D and 18C are detachably bolted.

  That is, by removing the lid members 30 and 31, it becomes possible to enter the inside of the grain tank 9 from the inspection ports 17D and 18C and to remove the inside of the grain tank 9, and each plate member 14 to 20 The caulking process that fills the gaps at the joints of the plate members 14 to 20 generated by the bolt connection with a material such as silicone, and the painting work that applies a rust inhibitor or paint to the inner surface of the grain tank 9 are facilitated. It can be carried out. Also, maintenance work such as internal cleaning of the grain tank 9 can be easily performed. Then, by forming the inspection ports 17D and 18C in the front left plate member 17 and the rear left plate member 18, the lid members 30 and 31 can be hidden in a state where the grain tank 9 is located at the working position.

  As shown in FIGS. 2 and 4 to 8, the upper plate member 20 is formed with a rectangular inspection port 20A, and a lid member 32 with a handle made of a sheet metal material for opening and closing the inspection port 20A is connected to the front and rear hinges 33. It is connected via. That is, by opening the lid member 32, the grain storage amount in the grain tank 9 can be easily recognized.

  As shown in FIGS. 5, 6, and 8, the grain receiving port 9 </ b> A of the grain tank 9 is provided at the peripheral edge of the grain receiving port 9 </ b> A in the grain tank 9. A seal member 34 made of sponge that fills a gap generated between the peripheral edge of the grain receiving port 9A in the grain tank 9 and the peripheral edge of the grain discharge port 8A in the lifting screw 8 when communicating with each other. It is pasted. That is, by sticking the sealing member 34 to the peripheral edge of the grain receiving port 9A that is recessed toward the inside of the grain tank 9, the grain discharge port 8A that bulges toward the inside of the grain tank 9 is provided. Compared to the case where the seal member 34 is attached to the peripheral edge, it is possible to prevent the seal member 34 from being peeled off due to the restoring force that the seal member 34 tries to restore linearly.

  As shown in FIGS. 3 to 5, 7, and 9 to 10, a rectangular kernel for enabling the removal of residual kernels is provided at the front and rear intermediate positions of the right inclined surface 14 </ b> B in the lower portion of the kernel tank 9. An outlet 9B is formed. In addition, a sheet metal opening / closing member 35 for opening / closing the grain outlet 9B is provided so as to be attachable / detachable by sliding up and down. At both front and rear end portions on the upper side of the right inclined surface 14B, there are provided handles 36 that are used when the grain tank 9 is oscillated and displaced. Each handle 36 is made of a round bar steel material bent into a U-shape having a front and rear gripping portion 36A.

  1-4 and FIGS. 6-11, between the grain tank 9 and the engine cover 11, the rocking displacement to the left-right direction of the grain tank 9 which made the support shaft part 24A a fulcrum is accept | permitted. A space 37 is secured. In this space 37, a belt tension type discharge clutch 38 in a transmission system for discharging a grain, and a discharge clutch operation spanning the discharge clutch 38 and a discharge clutch lever 39 provided at the rear upper part of the engine cover 11 are provided. A linkage mechanism 40 is provided.

  The right plate member 19 of the grain tank 9 is extended so that the front end portion 19 </ b> A is positioned forward of the front plate member 15. The vertical length of the extended front end portion 19A is set to a length extending from the upper end portion of the right plate member 19 to the lower end portion. Thereby, the front end 19 </ b> A of the right plate member 19 is an upper space portion 37 </ b> A located between the right plate member 19 and the engine cover 11 in the space 37 secured between the grain tank 9 and the engine cover 11. It functions as a cover which covers a part (rear part) from the lateral outer side.

  An upper cover member 41 made of a sheet metal extending from the front end portion 19 </ b> A of the right plate member 19 toward the engine cover 11 is attached to the front end portion 19 </ b> A of the right plate member 19. The upper cover member 41 is formed in a vertically long shape extending from the upper end portion of the engine cover 11 to the lower end portion of the right plate member 19. In other words, the upper cover member 41 is configured to cover a part (front side portion) of the upper space portion 37A in the space 37 secured between the grain tank 9 and the engine cover 11 from the lateral outer side.

  From this configuration, the upper space portion 37A of the space 37 secured between the grain tank 9 and the engine cover 11, the linkage mechanism 40 for operating the discharge clutch located in the upper space portion 37A, etc. 19 can be covered by the front end portion 19 </ b> A and the upper cover member 41.

  The upper cover member 41 is screwed into a plurality of (for example, four) bolts 42 and four corresponding bolts 42 that are fixed to the inner surface side of the front end portion 19 </ b> A of the right plate member 19 in the vertical direction at a predetermined interval. The right plate member includes a plurality of (four examples) nuts 43 and a plurality of (four examples) longitudinal holes 41A formed in the rear portion of the upper cover member 41 at predetermined intervals in the vertical direction. It is attached to the front end 19A of the right plate member 19 so that the extension length from 19 to the front can be adjusted.

  As a result, the grain between the right plate member 19 of the grain tank 9 and the engine cover 11 is sandwiched between the engine cover 11 and the upper cover member 41 by the upper cover member 41 regardless of manufacturing errors or assembly errors. The grain tank 9 and the engine cover 11 can be closed in a state where a slight gap that allows the rocking displacement is secured. As a result, the upper space portion 37A of the space 37 between the grain tank 9 and the engine cover 11, the linkage mechanism 40 for operating the discharge clutch located in the upper space portion 37A, and the like are obscured in a good manner. Can do.

  As shown in FIGS. 1, 3, and 9 to 11, a space between the right inclined surface 14 </ b> B in the lower part of the grain tank 9 and the vehicle body frame 1 is positioned at the right side in the lower part of the grain tank 9. 44, the opening / closing member 35 provided on the right inclined surface 14B, the front and rear handles 36, the bottom plate member 14 of the grain tank 9 and the engine cover 11 in the space 37 secured between the grain tank 9 and the engine cover 11. And a lower cover member 45 made of a sheet metal that is formed in a horizontally long shape to cover the lower space portion 37B located between the lower space portion 37B and the lock pin 25 and the discharge clutch 38 located in the lower space portion 37B. is there.

  The lower cover member 45 includes a cover main body 45A that covers the space 44 between the front and rear support members 21 and 22 between the right inclined surface 14B and the vehicle body frame 1 at the lower part of the grain tank 9, and the grain. A front cover portion 45B extending forward from the cover main body portion 45A so as to cover the lower space portion 37B of the space 37 secured between the tank 9 and the engine cover 11 from the lateral outer side, and a rear lower portion of the grain tank 9 It is formed in a single plate shape that is long before and after the bottom case 24 that is connected is continuously connected to the rear cover portion 45C that extends rearward from the cover main body portion 45A so as to cover the bottom case 24 from the lateral outer side.

  In the lower part of the lower cover member 45, front and rear engagements are formed with recesses 48 </ b> A and 49 </ b> A that engage with front and rear support shafts 46 and 47 provided in the lower right part of the support members 21 and 22 in the grain tank 9. Pieces 48 and 49 are provided. At the upper part of the lower cover member 45, front and rear locking tools 50 that are locked to the grip portions 36A of the respective grips 36 provided on the upper side of the right inclined surface 14B are attached. That is, the grip portion 36A of each handle 36 is also used as a locking shaft for attaching the lower cover member.

  Each locking tool 50 is configured by fitting a resin hook member 52 into a resin engagement member 51 formed with a recess 51A that engages with the grip portion 36A of the handle 36 so as to be swingable up and down. It is. The engaging member 51 is locked and fixed in a rectangular attachment hole (not shown) formed in the lower cover member 45. The engaging member 51 is formed with an elastically deformable tongue (not shown). The hook member 52 automatically returns to the closed position where the recess 51A of the engaging member 51 is closed by the elasticity of the tongue piece. When the grip portion 36A of the handle 36 is engaged with the concave portion 51A of the engagement member 51, the contact portion 44A is engaged with the grip portion 36A engaged with the concave portion 51A. As the gripping portion 36A reaches the concave insertion end of the concave portion 51A, it is automatically returned to the closed position and the separation of the gripping portion 36A from the concave portion 51A is prevented. Further, it is configured such that the swinging displacement to the opening position for opening the recess 51A of the engaging member 51 by manual operation is possible.

  With this configuration, the lower cover member 45 engages with the front and rear support shafts 46 and 47 provided on the support members 21 and 22 of the grain tank 9 with the engagement pieces 48 and 49 provided at the front and rear of the lower cover member 45. After that, the lower cover member 45 is swung to the grain tank side with the respective support shafts 46 and 47 as fulcrums, so that the front and rear locking tools 50 provided on the upper portion of the lower cover member 45 are placed in the grain tank 9. By engaging with the front and rear grips 36 provided on the right inclined surface 14B, the space 44 between the right inclined surface 14B and the vehicle body frame 1 is positioned on the right side in the lower part of the grain tank 9 and the right side. The opening / closing member 35 provided on the inclined surface 14B, the front and rear grips 36, the lower space portion 37B of the space 37 secured between the grain tank 9 and the engine cover 11, and the lower space portion 37B. Lock pin 25 located, discharge clutch 38, etc. It can be attached so as to cover. Further, after manually swinging the hook member 52 of each locking tool 50 to the open position, the lower cover member 45 is swung to the side away from the grain tank 9 with the respective support shafts 46 and 47 as fulcrums. Then, after releasing the gripping portion 36A of the handle 36 from the concave portion 51A of each locking tool 50, the engagement between the engaging pieces 48 and 49 and the support shafts 46 and 47 is released, whereby the grain tank 9 can be removed from the position on the right side at the bottom.

  As shown in FIGS. 3 and 9 to 11, the front support shaft 46 is formed with a screw having an annular engagement groove 46 </ b> A that engages with the front engagement piece 48 of the lower cover member 45 at the rear end. The shaft is adopted. The front support shaft 46 is screwed into a welding nut 53 welded to the front support member 21 as a screwed portion so that the position of the engagement groove 46A in the front-rear direction can be adjusted. Further, it can be fixed in an arbitrary adjustment state by a nut 54 screwed to the front support shaft 46.

  That is, by adjusting the position of the engagement groove 46A with which the front engagement piece 48 of the lower cover member 45 is engaged by the front support shaft 46, the welding nut 53, and the nut 54 in the front-rear direction, the lower side An adjustment mechanism 55 that adjusts the attachment position of the cover member 45 to the grain tank 9 in the front-rear direction is configured.

  The rear support shaft 47 shifts the position of the rear engagement piece 49 in the front-rear direction relative to the rear support shaft 47 when the adjustment mechanism 55 adjusts the mounting position of the lower cover member 45 in the front-rear direction. It is welded to the rear support member 22 so as to extend forward from the rear support member 22 with an allowable longitudinal length.

  The grip portion 36A of each handle 36 has a front / rear length that allows a displacement of the locking member 50 in the front / rear direction with respect to the grip portion 36A accompanying adjustment of the attachment position of the lower cover member 45 in the front / rear direction by the adjustment mechanism 55. Is formed.

  From this configuration, regardless of manufacturing errors, assembly errors, and the like, between the inclined surface 14B on the lower right side of the grain tank 9 and the vehicle body frame 1, and between the bottom plate member 14 of the grain tank 9 and the engine cover 11 The lower cover member 45 secures a slight gap between the engine cover 11 and the lower cover member 45 that permits the rocking displacement of the engine cover 11, in other words, the engine cover 11 and the lower cover. The gap formed between the member 45 and the member 45 can be closed in a sufficiently small state. As a result, the space 44 between the inclined surface 14B on the lower right side of the grain tank 9 and the vehicle body frame 1, the opening / closing member 35 provided on the inclined surface 14B on the right side, the front and rear handles 36, the grain tank 9 and the engine cover 11 are provided. The lower space portion 37B of the space 37 between and the lock pin 25, the discharge clutch 38, and the like located in the lower space portion 37B can be covered with good looks.

  Then, the adjustment operation of the position of the engagement groove 46A in the adjustment mechanism 55 is such that the adjustment amount of the engagement groove 46A is visually recognized from the position on the right side of the grain tank 9 by removing the lower cover member 45 from the grain tank 9. It can be done easily.

  The reference numeral 56 shown in FIGS. 1 to 3 is a rear cover member provided at the right rear portion of the combine so as to cover the electric motor and the like provided around the lifting conveyor 27.

    [Another embodiment]

[1] The combine may be configured as a whole-pile-feeding type in which the whole of the harvested cereal straw is put into the threshing device 6. Further, the boarding operation unit 4 may be configured to be covered with a cabin.

[2] The grain tank 9 may be configured by welding the plate members 14 to 20. Further, it may be configured by connecting a resin tank body to a sheet metal bottom.

[3] The adjusting mechanism 55 may be arranged on the rear side of the cover member 45.

[4] The cover member 45 is attached to the grain tank 9 at the opposite positions of the front and rear support shafts 46, 47 arranged in the front-rear direction at the lower portion of the cover member 45 and the support shafts 46, 47 in the grain tank 9. Engagement with the front and rear engagement pieces 48, 49, and before and after the front and rear locking tools 50 provided on the upper part of the cover member 45 and the front and rear of the grain tank 9 facing the locking tools 50. You may comprise so that it may carry out by latching with the latching shaft 36A. In this case, a screw shaft is employed as one of the front and rear support shafts 46 and 47 provided in the cover member 45, and the position of the engagement grooves 46A and 47A in the front-rear direction is adjusted by screwing of the screw shafts 46 and 47. The adjusting mechanism 55 is configured by mounting the screwing portion 53 to be enabled on the cover member 45.

[5] The cover member 45 covers only the lower space portion 37 </ b> B of the space 37 secured between the boarding operation unit 4 and the grain tank 9 in order to allow the swing operation of the grain tank 9. It may be formed so as to be hidden.

[6] As the cover mounting structure for the combine, the front end 19A is extended so as to be positioned in front of the front plate member 15, and the front end 19A is secured between the grain tank 9 and the engine cover 11. The right plate member 19 is formed so as to function as a cover that covers a part (rear side portion) of the upper space portion 37A located between the right plate member 19 and the engine cover 11 in the space 37. A cover main body 45 </ b> A that covers the space 44 extending from the lateral outer side to the front and rear support members 21, 22 between the right inclined surface 14 </ b> B and the vehicle body frame 1 at the lower part of the grain tank 9, The front cover portion 45 extending forward from the cover main body portion 45A so as to cover the lower space portion 37B of the space 37 secured between the grain tank 9 and the engine cover 11 from the lateral outer side. The lower cover member 45 having a preparative, or may be configured as detachably attaching without an adjustment mechanism 55. In addition to this configuration, a sheet metal upper cover member 41 extending from the front end portion 19A of the right plate member 19 toward the engine cover 11 is attached to the front end portion 19A of the right plate member 19. It may be. Further, in addition to these configurations, a rear cover part 45C that covers the bottom case 24 connected to the rear lower part of the grain tank 9 from the lateral outer side is formed on the lower cover member 45 so as to extend rearward from the cover main body part 45A. It may be as described above.

  The cover mounting structure for a combine according to the present invention is in a left-right direction with a grain tank as a fulcrum provided at a rear end portion of the grain tank at a position behind the boarding operation unit in the body frame. A cover that covers the lower space part of the space secured between the boarding operation part and the grain tank to allow the grain tank to be swung and to allow the grain tank to swing. The present invention can be applied to a self-removing combine and a full-pile throwing combine in which members are detachably attached to the lower part of the grain tank.

DESCRIPTION OF SYMBOLS 1 Body frame 4 Boarding operation part 9 Grain tank 24A Support shaft 36A Locking shaft 37 Space 37B Lower space part 45 Cover member 46 Support shaft (screw shaft)
46A Engagement groove 47 Support shaft 48 Engagement piece 49 Engagement piece 50 Locking tool 53 Screwing part 55 Adjustment mechanism

Claims (2)

In a position behind the boarding operation part in the vehicle body frame, a swinging operation in the left-right direction with the grain tank as a fulcrum and a vertical support shaft provided at the rear end part of the grain tank is enabled. A cover member that covers and covers a lower space portion of the space secured between the boarding operation unit and the grain tank in order to allow swinging operation of the grain tank. A cover mounting structure for a combine that is detachably attached to the lower part,
The attachment of the cover member to the grain tank includes a front and rear engagement piece provided at a lower portion of the cover member, and a front and rear support shaft disposed in a front-rear direction at a position opposite to the engagement piece in the grain tank. Engagement, or engagement between front and rear support shafts arranged in the front-rear direction at the lower part of the cover member, and front and rear engagement pieces provided at locations opposite to the support shaft in the grain tank, and the cover member The front and rear locking tools provided on the top of the grain tank and the front and rear locking shafts arranged in the front-rear direction at the opposite locations of the locking tools in the grain tank,
Any one of the front and rear support shafts is configured by a screw shaft formed at an end portion of an annular engagement groove with which the engagement piece engages, and the engagement groove formed by screwing of the screw shaft. The grain tank or the cover member is equipped with a screwing part that enables position adjustment in the front-rear direction, and the cover member is attached to the grain tank in the front-rear direction by the screw shaft and the screwing part. A cover mounting structure for a combine that has an adjustment mechanism that enables position adjustment.   The combine cover mounting structure according to claim 1, wherein the adjustment mechanism is disposed on a front side of the cover member.

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