JP2005343347A - Tractor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow performing an easy positioning operation for a stationary side hood forming body. <P>SOLUTION: The tractor is structured so that a prime mover part provided on a machine frame is covered with a hood, which is furnished with the stationary side hood forming body fixed onto the machine frame and covering the lower half of the prime mover part and an opening/closing side hood forming body covering the upper half of the prime mover part in such an arrangement as opening and closing on the stationary side hood forming body, wherein an engaging piece for positioning is installed in the rear over position of the prime mover part, while a piece to be engaged for positioning is installed at the tail of the stationary side hood forming body, and the piece to be engaged is engaged with the engaging piece to allow performing the positioning of the stationary side hood. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tractor.

  Conventionally, as one form of the tractor, the prime mover part provided on the fuselage frame is covered with a bonnet, and the bonnet is fixed on the fuselage frame and covers the lower half of the prime mover part, Some include an opening / closing bonnet forming body that is openable and closable on the fixed bonnet forming body and covers the upper half of the prime mover (see, for example, Patent Document 1).

  The fixed-side bonnet forming body is connected and fixed to the front end edge of the dashboard covering the rear of the prime mover portion in a butted manner, and the fixed-side bonnet forming body and the dashboard A connecting hole is formed in each front end edge, and both connecting holes are aligned in the front-rear direction and connected by a connecting bolt.

At this time, since the prime mover part is provided on the fuselage frame, the operator holds the front part of the fixed bonnet formation body and puts the fixed bonnet formation object on the lower half of the prime mover part from the front of the prime mover part. The connecting hole formed at the rear end edge of the fixed bonnet forming body and the connecting hole formed at the front end edge of the dashboard are aligned in the front-rear direction and connected by a connecting bolt while being arranged at the covering position. I have to.
Japanese Patent No. 3516740

  However, in the tractor described above, since the prime mover portion is provided on the body frame when fixing the fixed side bonnet forming body, the connecting hole formed in the rear end edge portion of the fixed side bonnet forming body and the dash When the connecting hole formed in the front edge portion of the board is aligned in the front-rear direction, there is a problem that the prime mover part is visually obstructed, and the worker cannot easily perform such work alone.

  Therefore, in the present invention, the prime mover part provided on the fuselage frame is covered with a bonnet, and the bonnet is fixed on the fixed bonnet formation body fixed on the fuselage frame and covering the lower half of the prime mover part. In a tractor comprising an open / close side bonnet forming body that is openable and closable on the side bonnet forming body and covers the upper half of the prime mover part, a positioning locking body is provided at the rear upper position of the prime mover part and fixed. The positioning bonnet can be positioned by providing a positioning locked body at the rear end of the side bonnet forming body and locking the positioning locked body to the positioning locking body. The tractor characterized by the above is provided.

  The present invention is also characterized by the following configurations.

  (1) The positioning body is positioned between the upper rising piece formed by raising upward from the rear ends of the left and right side panel forming pieces of the fixed bonnet forming member, and the upper ends of both upper rising pieces. The positioning locking body is provided with a pair of left and right positioning members and a locking recess for locking the left and right extending pieces.

  (2) The pair of left and right positioning locking bodies are provided so as to protrude forward from the partition body disposed behind the prime mover.

  (3) In the prime mover section, an exhaust muffler and an air cleaner are disposed on the left and right side portions of the upper surface of the engine, and a pair of left and right positioning locking bodies are disposed immediately above the exhaust muffler and the air cleaner.

  (1) In the first aspect of the present invention, the prime mover portion provided on the fuselage frame is covered with a bonnet, and the bonnet is fixed on the fuselage frame and covers the lower half of the prime mover portion. In a tractor comprising a forming body and an opening and closing side bonnet forming body that is openable and closable on the fixed bonnet forming body and covers the upper half of the prime mover part, a positioning latch at a position above the prime mover part On the other hand, a positioning-side locked body is provided at the rear end of the fixed-side bonnet forming body, and the positioning-side locked body is locked to the positioning-side locking body, thereby Positioning can be performed.

  In this way, since the positioning locking body is provided at the rear upper position of the prime mover portion, the positioning locked body provided at the rear end portion of the stationary bonnet forming body can be easily provided on the positioning locking body. The fixed-side bonnet forming body can be easily positioned.

  Therefore, the subsequent fixing work of the fixed-side bonnet forming body can be easily performed, and the assembling work can be efficiently performed.

  (2) In the present invention according to claim 2, the locked body for positioning includes an upward rising piece formed by raising upward from the rear end portion of the left / right side panel portion forming piece of the fixed bonnet forming body. The left and right extension pieces formed by extending in the left-right direction between the upper ends of the upper rising pieces, and a pair of positioning locking bodies provided on the left and right sides and locking the left and right extension pieces. A recess is provided.

  In this way, the locked body for positioning is positioned in the left-right direction between the upper ends of the upper rising pieces that are formed by raising the rear bonnet forming body from the rear end of the left and right side panel forming pieces. The left and right extension pieces are formed so as to be locked with the locking recesses of the pair of left and right positioning locking bodies, so that the left and right extension pieces are locked with the locking recesses. When being locked to the motor, the prime mover portion is not visually obstructed, and the fixed bonnet forming body can be easily positioned.

  (3) In the third aspect of the present invention, the pair of left and right positioning locking bodies are provided so as to protrude forward from the partition body disposed behind the prime mover section.

  In this manner, the pair of left and right positioning locking bodies are provided so as to protrude forward from the partition body disposed behind the prime mover portion, and thus a support member for separately supporting the positioning locking body. It is possible to reliably support the positioning locking body without providing the.

  (4) In the present invention as defined in claim 4, the prime mover portion is provided with an exhaust muffler and an air cleaner on the left and right sides of the upper surface of the engine, and a pair of left and right positioning locks at positions immediately above the exhaust muffler and the air cleaner. The body is arranged.

  In this way, since the pair of left and right positioning latches are arranged at positions directly above the exhaust muffler and the air cleaner arranged on the left and right sides of the upper surface of the engine, The exhaust muffler and the air cleaner are not visually obstructed when the provided positioning body is locked to the pair of left and right positioning locking bodies, and the fixed side bonnet forming body can be easily positioned. it can.

  A shown in FIG. 1 is a tractor according to the present invention. The tractor A is provided with a prime mover portion 2 at the front and a driving portion 3 at the rear on the body frame 1 for the same operation. The transmission section 4 is disposed below the driver's seat 94 of the section 3, and a pair of left and right front wheels 6 and 6 are attached to the front section via the front axle case 5 below the fuselage frame 1, and A pair of left and right rear wheels 8 and 8 are attached to the part 4 via a rear axle case 7. 9 is an elevating link mechanism, and 10 is a mower.

  As shown in FIGS. 1 to 3, the fuselage frame 1 is constructed by extending in the left-right direction between a pair of left and right front and rear extension pieces 1a, 1a extending in the front-rear direction and the front ends of both front-rear extension pieces 1a, 1a. The left and right extending pieces 1b are formed.

  As shown in FIGS. 1 to 5, the prime mover portion 2 has engine mounts 11, 11, 12, 12 as vibration-proofing / supporting bodies disposed in front of a pair of left and right front and rear extension pieces 1 a, 1 a. The engine 13 is mounted on the engine mounts 11, 11, 12, and 12, and the engine 13 is supported for vibration isolation.

  Then, the cooling fan shaft 14 is protruded forward from the engine 13, the cooling fan 15 is attached to the cooling fan shaft 14, and the radiator 17 is disposed through the radiator support 16 at a position immediately before the cooling fan 15. At the same time, a cylindrical cooling fan shroud 18 is extended rearward from the radiator 17, and the outer periphery of the cooling fan 15 is covered by the cooling fan shroud 18, and an exhaust muffler 19 is disposed immediately above the engine 13. An air cleaner 20 is arranged. B is a battery, 25 is a fan drive shaft, and 26 is a fan drive belt.

  Here, the radiator support body 16, as shown in FIGS. 2 to 5, stands on the support plate body 27, and a support plate body 27 laid horizontally between the front portions of the pair of left and right front and rear extension pieces 1 a and 1 a. The support frame 28 is provided, and the support frame 28 is disposed at a position immediately before the radiator 17.

  The support frame 28 includes a pair of left and right upper extending support pieces 28a and 28a formed by extending upward from the support plate 27 along substantially the left and right side edges of the radiator 17, and the upper edge of the radiator 17. Are formed to extend in the left-right direction substantially along the left and right sides, and from the left and right extended support pieces 28b horizontally placed between the upper ends of the upper extended support pieces 28a, 28a.

  Moreover, in the present embodiment, the front end edge portion of the support frame body 28 formed in the front view type as described above is used as the seal member support frame piece 29 and is sealed to the peripheral edge portion of the seal member support frame piece 29. The member 30 is attached, and the inner surface of the closed bonnet 39 is in contact with the seal member 30 so that the inside of the bonnet 39 is shielded by the seal member 30 in the front-rear direction.

  Further, as shown in FIGS. 3 to 5, the seal member 30 extends along the peripheral portion of the seal member support frame piece 29 and has a U-shaped cross-section fitting piece 30 a, and the seal member support frame piece 29 extending along the peripheral portion of the fitting piece 30a, and is formed from a sealing member main piece 30b having a ring-shaped cross section provided continuously to the outer surface of the fitting piece 30a. The fitting piece 30a is fitted and attached. 31 is a bonnet lid fixing / releasing mechanism attached to the radiator support 16.

  In this way, the front end edge of the support frame 28 disposed immediately before the radiator 17 is used as the seal member support frame piece 29, and the seal member 30 is attached to the peripheral edge of the seal member support frame piece 29. Thus, the inner surface of the front part of the bonnet 39 closed by the seal member 30 abuts and the inside of the bonnet 39 can be shielded in the front-rear direction by the seal member 30, so that the seal member 30 is supported. Therefore, there is no need to form a high edge portion or to attach an elastic contact material to the inner surface of the bonnet 39.

  Further, a positioning hole 32 as a positioning portion is formed on the right side of the left and right extension support piece 28b, and the tip inlet port 21a of the intake pipe 21 of the air cleaner 20 and the support frame body 28 are formed in the positioning hole 32. By inserting the middle part 34a of the water supply pipe 34 of the cooling water auxiliary tank 33 arranged just before, these can be positioned.

  In this way, the front end inlet 21a of the intake pipe 21 of the air cleaner 20 and the middle part 34a of the water supply pipe 34 of the cooling water auxiliary tank 33 are positioned through the positioning hole 32 formed in the right side of the left and right extension support piece 28b. Therefore, it is not necessary to separately provide a member for positioning and supporting these pipes 21 and 34, and the structure can be simplified and the manufacturing cost can be reduced.

  Here, the intake pipe 21 connects the base end portion to the air cleaner 20 to extend the front intake port portion 21a forward and is inserted into the positioning hole 32 formed in the right side portion of the left and right extension support piece 28b. It is bent downward and opened to the lower right.

  The front edge portion of the support frame 28 disposed immediately before the radiator 17 serves as a seal member support frame piece 29, and the seal member 30 is attached to the peripheral edge of the seal member support frame piece 29. In addition, it is possible to easily avoid the midway portion of the intake pipe 21 from interfering with the seal member 30, and it is possible to ensure good shielding performance by the seal member 30.

  As shown in FIG. 3, the exhaust muffler 19 is formed to extend in the front-rear direction and is arranged at a position directly above the left side of the engine 13. As shown in FIG. A bonnet that covers the engine 13 as shown in FIG. 1 is formed by connecting the base end portion 22a of the exhaust pipe 22 to the end wall 19a and extending the tip exhaust port portion 22b of the exhaust pipe 22 downward. It protrudes outward and downward from the opening 23 formed in the rear lower part of the left side wall of 39.

  Here, a pipe stay 24 protrudes forward from the left rear engine mount 12, and a lower portion of the exhaust pipe 22 is connected to and supported by a front end portion (front end portion) 24a of the pipe stay 24.

  In this way, the base end 22a of the exhaust pipe 22 is connected to the rear end of the exhaust muffler 19 formed by extending in the front-rear direction, and the front exhaust port 22b of the exhaust pipe 22 is directed downward. The fan 17 is driven in the vicinity of the front of the engine 13 and the cooling fan 15 because it is extended and protrudes outward and downward from the opening 23 formed in the rear lower part of the left side wall of the bonnet 39 that covers the engine 13. The exhaust muffler 19 can be separated from the belt 26, and the maintainability of the radiator 17 and the fan drive belt 26 can be improved.

  In addition, since the exhaust port 22b at the front end of the exhaust pipe 22 can be spaced apart from the radiator 17, the exhaust hot air discharged from the exhaust pipe 22 can be prevented from being sucked into the radiator 17 again. be able to.

  Further, a pipe stay 24 is provided on an engine mount 12 as a vibration isolating / supporting body for isolating and supporting the engine 13 on the body frame 1, and a lower portion of the exhaust pipe 22 is supported on a tip 24 a of the pipe stay 24. Therefore, the vibration of the exhaust pipe 22 can be synchronized with the vibration of the engine 13, and in particular, it is possible to prevent the occurrence of a problem that the tip of the exhaust pipe 22 is damaged by the vibration.

  The motor unit 2 described above is covered with a bonnet 39 on the front, left and right sides, and the upper side, and the bonnet 39 is fixed on the machine frame 1 as shown in FIGS. 1 and 2. A fixed bonnet forming body 40 that covers the lower half of the motor, and an open / close bonnet forming body 41 that is openable and closable on the fixed bonnet forming body 40 and covers the upper half of the prime mover 2. ing.

  As shown in FIG. 2, the fixed-side bonnet forming body 40 includes a front grill portion forming piece 42 and left and right side panels having front end portions connected to left and right end portions of the front grill portion forming piece 42, respectively. It is formed from the part forming pieces 43, 43, and a positioning locked body 44 is provided between the rear ends of the left and right side panel part forming pieces 43, 43.

  The positioning body 44 is formed by attaching the lower part of the pair of left and right upper rising pieces 44a, 44a formed by raising upward to the inner rear end of the left and right side panel part forming pieces 43, 43, the attachment pieces 45, It is attached via 45, and between the upper ends of both upward rising pieces 44a, 44a, left and right extension pieces 44b extending in the left-right direction are horizontally mounted to form a frontal portal type. On the side portions, hook-like positioning and lateral slip prevention pieces 46, 46 are provided.

  Here, as shown in FIG. 1, in the state where the fixed-side bonnet forming body 40 is fixed on the machine body frame 1, the left and right extending pieces 44 b are positioned above the upper end of the engine 13. It is formed to be located.

  Further, as shown in FIG. 6, a fuel tank 47 is disposed behind the prime mover unit 2, and the fuel tank 47 is isolated by a partition body 48. As shown in FIG. A pair of left and right positioning latches 49 and 49 are provided to project forward on the left and right sides of the upper front surface of 48 (the rear upper position of the motor unit 2), and the separation prevention body 50 is projected forward at the center. Provided.

  In addition, the pair of left and right positioning locking bodies 49 and 49 are disposed immediately above the exhaust muffler 19 and the air cleaner 20 disposed on the left and right sides of the upper surface of the engine 13.

  Further, as shown in FIGS. 2 and 6, each positioning locking body 49 is formed by a bottom portion forming piece 49a extending in the front-rear direction and a left side edge portion of the bottom portion forming piece 49a. -It is formed in a U-shape in front view from the right side wall forming pieces 49b, 49b, and the left and right extension pieces 44b are locked to the front end portions (front end portions) of the left and right side wall forming pieces 49b, 49b. The locking recesses 49c, 49c for doing so are bent downward.

  As shown in FIG. 6 (b), the detachment preventing body 50 is disposed slightly above the left / right wall forming pieces 49b, 49b.

  Thus, when performing the mounting work of the fixed side bonnet forming body 40, the operator has the front part of the fixed side bonnet forming body 40 and is provided at the rear end portion of the fixed side bonnet forming body 40. The left and right extension pieces 44b of the positioning body 44 are positioned below the detachment preventing body 50, and the locking recesses 49c and 49c formed at the distal ends of the positioning locking bodies 49 and 49 are viewed from above. Lock.

  At this time, hook-like positioning and lateral slip prevention pieces 46, 46 provided on the left and right side portions of the left and right extension pieces 44b are inserted between the left and right side wall forming pieces 49b, 49b of the positioning locking bodies 49, 49. By doing so, it is possible to position the left and right elongated pieces 44b and to prevent lateral displacement.

  Moreover, when the left and right extension pieces 44b are locked to the locking recesses 49c and 49c, the pair of left and right positioning locking bodies 49 and 49 forming the locking recesses 49c and 49c are connected to the exhaust muffler 19. Since the air cleaner 20 is disposed immediately above the air cleaner 20, the exhaust muffler 19 and the air cleaner 20 forming the uppermost portion of the prime mover unit 2 are not visually obstructed. Positioning work can be performed easily.

  In this state, the fixed-side bonnet forming body 40 is mounted on the machine frame 1 by rotating the front portion of the fixed-side bonnet forming body 40 downward with the left and right extending pieces 44b as the rotation fulcrum. Can be assembled efficiently.

  Further, the pair of left and right positioning locking bodies 49, 49 and the detachment preventing body 50 are provided so as to protrude forward from the bulkhead body 48 disposed behind the prime mover unit 2, so that the positioning locking bodies are separately provided. The positioning locking members 49 and 49 and the separation preventing body 50 can be reliably supported without providing a support member for supporting the 49 and 49 and the separation preventing body 50.

  Here, as shown in FIGS. 1 and 2, a dashboard stay 52 to be described later is disposed immediately after the fixed bonnet forming body 40, and the left and right side walls of the dashboard stay 52 are arranged. The rear edge of the left and right side panel forming pieces 43, 43 is brought into contact with the lower part of the front edge of the forming pieces 53, 53, and the fixed bonnet forming body 40 is fixed to the machine frame 1 with a fixing bolt or slit (not shown). It is fixed by etc.

  Further, as shown in FIG. 2, strip-like contact bodies 61, 61 extending in the vertical direction are provided on the front inner side surfaces of the left and right side panel portion forming pieces 43, 43. 61, the seal member main piece 30b of the seal member 30 attached to each of the upward extending support pieces 28a, 28a of the support frame body 28 is in contact with the support frame body 28. In FIG. 2, 62 is a reflector seal affixed to the outer surface of each side panel portion forming piece 43.

  As shown in FIG. 1, the opening / closing bonnet forming body 41 is formed of a front wall forming piece 55, left and right wall forming pieces 56, 56, and a ceiling portion forming piece 57. The base end portion of the open / close support arm 60 is pivotally supported on the inner surface of the ceiling portion forming piece 54 via a pivot pin 59 whose axis is directed in the left-right direction, and the distal end portion of each open / close support arm 60 is connected to the ceiling portion forming piece 57. The opening / closing bonnet forming body 41 is opened and closed freely in the vertical direction with the pivot pin 59 as a center. Reference numeral 63 denotes a rod-shaped open support body, and the open support body 63 is pivotally connected to the distal end portion (front end portion) of the separation preventing body 50 by pivotally supporting the base end portion 63a.

  As shown in FIGS. 2 and 6, the dashboard stay 52 is supported by a fuel tank support 65 standing in the middle of the body frame 1 and a steering post 66 described later. Front view from left and right wall forming pieces 53, 53 extending in the vertical direction, and a ceiling forming piece 54 extending horizontally in the horizontal direction between the upper ends of both left and right wall forming pieces 53, 53 It has a gate shape.

  A dashboard 68 and a steering post 66 of the driving unit 3 to be described later are connected to the rear end edge of the dashboard stay 52.

  As shown in FIGS. 4 to 6, the fuel tank support 65 includes a steering post support base 72 installed between a pair of left and right front and rear extension pieces 1 a, 1 a, and an upper front wall of the steering post support base 72. It is formed from a support body 73 formed to extend horizontally further forward and vertically rise upward, and a fuel tank 47 is placed on the support body 73 and the upper end portion of the support body 73 The lower end portion of the partition wall body 48 is attached to the fuel tank 47 and the fuel tank 47 is isolated from the engine 13 immediately before by the partition wall body 48.

  Further, as shown in FIGS. 6 to 9, at the center of the rear end of the ceiling portion forming piece 54 of the dashboard stay 52, a stay side connection bracket 75 having an L shape in side view is provided to protrude rearward, A post-side connection bracket 76 is provided on the upper part of the steering post 66 standing on the steering post support 72 so as to protrude forward, and the front end portions of both connection brackets 75 and 76 are overlapped in the vertical direction, and from above. They are connected by screwed connection bolts 77 and 77.

  Here, as shown in FIGS. 6 to 10, the partition wall body 48 is supported by a steering post 66 provided in the driving unit 3 via a support body 80, and the fuel tank 47 is also integrated with the support body 80. I support it.

  That is, the support 80 is extended from the left and right extension pieces 81 formed by extending in the left-right direction wider than the left and right widths of the fuel tank 47, and forwardly from the left and right end portions of the left and right extension pieces 81, respectively. A pair of left and right front extending pieces 82 and 82 are formed.

  The support body 80 includes a distal end portion (front end portion) of a post side connection bracket 76 as a fixed piece projecting forward from the steering post 66 and a stay side as a superposition connection piece. The base end portion (front end portion) of the connection bracket 75 is sandwiched and fixed in the vertical direction.

  Moreover, a recess 85 extending in the left-right direction is formed at the tip of the post-side connecting bracket 76, and the center of the left-right extension piece 81 is fitted into the recess 85, and the post side The base end portion of the stay side connection bracket 75 is overlapped with the distal end portion of the connection bracket 76 from above, and the brackets 75 and 76 are connected by connection bolts 77 and 77.

  Further, the pair of left and right front extending pieces 82 and 82 of the support 80 are connected to the connecting protrusions 83 and 83 formed at the left and right side walls 47a and 47a of the fuel tank 47 through the through holes 84 and 84, respectively. And is connected to the partition wall 48. Reference numerals 86 and 87 denote fastening nuts screwed to the front end portions 82a and 82a of the front extending pieces 82 and 82, respectively.

  In this way, the partition wall 48 is supported on the steering post 66 provided in the operating unit 3 via the support 80, and the fuel tank 47 is also integrally supported by the support 80. Maintainability around the tank 47 can be secured well, and the maintenance work can be performed efficiently.

  At this time, the center portion of the left and right extending pieces 81 is fixed to the steering post 66, and the connecting protrusions formed on the left and right side walls 47a and 47a of the fuel tank 47 with the tip portions 82a and 82a of the pair of left and right front extending pieces 82 and 82, respectively. Since it penetrates the pieces 83, 83 through the through holes 84, 84 and is connected to the partition body 48, the structure can be simplified and the partition body 48 and the fuel tank 47 can be reliably supported, Good maintainability around the fuel tank 47 can be secured.

  In addition, the central portion of the left and right extending pieces 81 has a front end portion (front end portion) of a post side connection bracket 76 as a fixed piece projecting forward from the steering post 66 and a base of the stay side connection bracket 75 as a superposition connection piece. The support 80 is attached by tightening or loosening the connecting bolts 77 and 77 because they are clamped from the top and bottom by the end (front end) and connected and fixed by the connecting bolts 77 and 77. The work or the removal work can be easily performed, and the maintainability around the fuel tank 47 can be remarkably improved.

  As shown in FIG. 1, the driving unit 3 has a steering column 91 erected at the front of a step unit 90 that is stretched in the middle of the body frame 1, and a dashboard 68 is provided at the upper end of the steering column 91. The dashboard 68 and the front edge of the steering column 91 are connected to the rear edge of the dashboard stay 52, and the steering post 66 is erected through the steering column 91 and the dashboard 68. A steering handle 93 is attached to the upper end of a steering handle support shaft 92 that is inserted into the steering post 66.

  A driver's seat 94 is disposed behind the steering handle 93, and rear wheel fenders 95 and 95 are disposed at the left and right side positions of the driver's seat 94.

  Further, as shown in FIGS. 6 to 10, the driving unit 3 is erected from a steering post support 72 provided on the fuselage frame 1, and a lever stay 96 is erected on the upper end of the lever stay 96. A lever support shaft 97 having an axis line in the left-right direction is provided, and a base end portion of an accelerator lever 99 is attached to the lever support shaft 97 through a boss portion 98, and an upper end grip 99a of the accelerator lever 99 is attached to a steering handle 93. It is arranged near the right side.

  In addition, as shown in FIG. 6 (b), a base end portion of the wire operating arm 100 is attached to a boss portion 98 attached to the lever support shaft 97 so as to be freely pivotable back and forth. An interlocking wire 102 is interposed between an engine speed adjusting lever (regulator) 101 provided in the engine 13 of the section 2.

  Furthermore, a wire disposition recess 103 extending in the front-rear direction is formed in the lower right portion of the fuel tank 47 disposed immediately in front of the steering post 66, and the interlocking wire 102 is disposed in the front-rear direction in the wire disposition recess 103. It is slidable in the direction. 104 is a clutch operation mechanism.

  In this way, since the accelerator lever 99 and the wire operating arm 100 are attached to the lever support shaft 97 of the lever stay 96 raised from the steering post support 72 via the boss portion 98, the lever support shaft 97 is attached. It can be disposed in the vicinity of the steering handle 93, the accelerator lever 99 itself can be shortened, and the accelerator operation width performed by rotating the accelerator lever 99 in the front-rear direction can be reduced. As a result, the fatigue of the operator who operates the accelerator lever 99 can be reduced.

  At this time, since the interlocking wire 102 is slidably disposed in the front-rear direction in the wire disposition recess 103 formed in the lower right portion of the fuel tank 47, the interlocking wire 102 should be disposed inward of the fuselage. Thus, the airframe can be made compact and the interlocking function of the interlocking wire 102 can be ensured satisfactorily.

  As shown in FIG. 1, a flywheel 110 is interlocked and connected to a drive shaft (not shown) of the engine 13, and an output shaft 111 protrudes rearward from the flywheel 110, while in front of the transmission unit 4. A hydro-hydraulic continuously variable transmission (hereinafter referred to as “HST”) 112 is linked to the section, and an input shaft 113 is projected forward from the HST 112 to connect the input shaft 113 and the output shaft 111 to each other. The gears are linked via a transmission shaft 114. Reference numeral 115 denotes an HST cooling fan.

  Further, the output shaft 116 protrudes forward from the lower front wall of the transmission unit 4, while the input shaft 117 protrudes rearward from the center of the rear wall of the front axle case 5, so that the input shaft 117 and the output are The shaft 116 and the front axle transmission shaft 118 are linked and connected so that the front and rear wheels 6, 6, 8, and 8 can be driven four-wheeled.

The side view of the tractor concerning the present invention. Exploded perspective view of the motor section of the tractor. The top view of the prime mover part. The left view of the motor part. The right view of the motor part. Explanatory drawing of the motor part and the operation part. The top view of the motor | power_engine part and a driving | operation part. FIG. The side view of the steering wheel vicinity. The rear view of the steering wheel vicinity.

Explanation of symbols

A Tractor B Battery 1 Airframe Frame 2 Motor part 3 Driving part 4 Mission part 5 Front axle case 6 Front wheel 7 Rear axle case 8 Rear wheel

Claims (4)

The prime mover part provided on the fuselage frame is covered with a bonnet, and the bonnet is fixed on the fuselage frame to cover the lower half of the prime mover part, and on the fixed bonnet formation part. In a tractor comprising an opening / closing bonnet forming body that is openable and closable and covers the upper half of the prime mover part,
While the positioning locking body is provided at the rear upper position of the prime mover portion, the positioning locked body is provided at the rear end portion of the fixed bonnet forming body, and the positioning locked body is used as the positioning locking body. The tractor is characterized in that the fixed side bonnet can be positioned by being locked to. The positioning body is left and right between the upper rising piece formed by raising upward from the rear end of the left and right side panel forming pieces of the fixed bonnet forming body and the upper ends of both upper rising pieces. While having a left and right distracted piece formed by extending to
2. The tractor according to claim 1, wherein a pair of positioning locking bodies are provided on the left and right sides, and further include a locking recess for locking the left and right extending pieces.   The tractor according to claim 1 or 2, wherein the pair of right and left positioning locking bodies are provided so as to protrude forward from a partition body disposed behind the prime mover section.   The engine unit is characterized in that an exhaust muffler and an air cleaner are arranged on the left and right sides of the upper surface of the engine, and a pair of left and right positioning locking bodies are arranged immediately above the exhaust muffler and the air cleaner. The tractor of any one of 1-3.

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