JP6217837B2 - Tractor - Google Patents

Description

  The present invention relates to a vehicle such as a work vehicle such as an agricultural tractor in which a fuel tank is disposed at a rear portion in an engine bonnet.

  A power steering specification tractor in which a steering post and a steering handle are provided behind a fuel tank is known (see, for example, Patent Document 1).

  In the bonnet of a tractor, which is an agricultural machine, a resin or sheet metal fuel tank is covered with a gate-type control panel frame that is erected from the vehicle body, supported by left and right tank stays, etc. There is also known a tractor in which a fuel tank is arranged and configured by effectively utilizing the rear part of the bonnet by avoiding direct collision of waste wind from the engine side by installing a heat shield on the front side (for example, , See Patent Document 2).

JP 2003-137116 A JP 2000-318650 A

  An object of this invention is to provide the tractor which can open | release a bonnet widely.

The first aspect of the present invention is
Engine (4),
A bonnet (8) covering the engine (4);
A steering section (2a) provided behind the engine (4);
A partition plate (12) that partitions the engine (4) and the control unit (2a);
A fuel tank (18) disposed behind the partition plate (12);
With
A radiator (28) is provided in front of the engine (4), an air cleaner storage case (17) and a muffler (26) are provided between the radiator (28) and the partition plate (12), and the air cleaner storage case (17) The longitudinal direction is arranged so as to extend from the front side of the bulging portion (12a) toward the outer side in the left-right direction of the airframe, and the storage lid (17b) of the air cleaner storage case (17) is provided on the left and right outer surfaces. A muffler (26) is provided on the left and right sides of 12a)
A battery (29) is provided in front of the radiator (28),
A front plate (44) for mounting the battery (29) is provided;
A bulging portion (12a) is formed at the upper part of the partition plate (12) toward the front side of the fuselage, and the front portion of the fuel tank (18) enters the rear side of the bulging portion (12a). A left turning fulcrum shaft (11L) is provided on the left side of the bulging portion (12a), a right turning fulcrum shaft (11R) is provided on the right side of the bulging portion (12a), and the bulging portion (12a) is seen in plan view. Form a notch (C) in the bonnet (8) to avoid
A spring plate (34) and compression springs (44L, 44R) are attached to the lower part of the front side of the bonnet (8), and a lock bar (35) is attached to the front plate (44) side.
When the bonnet (8) is closed, the spring plate (34) contacts the lock bar (35), and the compression springs (44L, 44R) contact the front plate (44) in the compressed state.
When the bonnet (8) is opened upward about the left and right pivot fulcrum shafts (11L, 11R), the bonnet (8) is configured to be pivotable beyond the vertical direction and rotated beyond the vertical direction (8 ) Is fixed and supported by the fixing rod (16) in a state of being opened in a substantially vertical direction .
The second aspect of the present invention
The bulging part (12a) is formed in the left and right center part of the upper part of the partition plate, and the front part of the fuel tank (18) entering the rear side of the bulging part (12a) is narrower than the rear part. The tractor according to claim 1.
The third aspect of the present invention provides
The left notch (C) is fixed to the left mounting plate (13L) that is pivotably attached to the left pivot point (11L) so as to avoid the bulge (12a) in plan view. A bent portion (C1L) having a bent portion (C1L) and a right-side bent portion (C1R) to which a right mounting plate (13R) rotatably attached to the right rotating fulcrum shaft (11R) is fixed. The tractor according to claim 1 or 2, characterized in that is formed on the bonnet (8) side over the entire circumference .

  By this invention, the tractor which can open | release a bonnet widely can be provided. Moreover, the capacity of the fuel tank can be secured. Further, maintenance of the air cleaner storage case can be easily performed.

The left view of the tractor of Embodiment 1 in this invention The fragmentary perspective view of the tractor front part of Embodiment 1 in this invention FIG. 3 is a partial perspective view around the power steering controller of the tractor according to the first embodiment of the present invention. (A) Partial perspective view of the steering handle lower part of the tractor according to the first embodiment of the present invention, (b) Partial perspective view of the lower part of the manual steering handle of the tractor according to the embodiment related to the present invention. (A) Rear view of lower portion of steering handle of tractor according to embodiment 1 of the present invention, (b) Right side view of lower portion of steering handle of tractor according to embodiment 1 of the present invention. Partial perspective view around the front PTO shaft of the tractor according to the first embodiment of the present invention (No. 1) Partial perspective view around the front PTO shaft of the tractor according to the first embodiment of the present invention (No. 2) Partial perspective view around the front PTO shaft of the tractor according to the first embodiment of the present invention (No. 3) The perspective view of the engine periphery of Embodiment 2 in the invention related to the present invention The top view of the engine periphery of Embodiment 2 in the invention related to the present invention The rear view of the bonnet of Embodiment 2 in the invention relevant to this invention (A) The perspective view of the state which the bonnet of Embodiment 2 in the invention relevant to this invention opened, (b) Sectional drawing of the bonnet front part of Embodiment 2 in the invention relevant to this invention (A) Perspective view of the front part of the tractor according to the second embodiment of the invention related to the present invention, (b) Perspective view of the opening / closing support part of the rear bonnet according to the second embodiment of the invention related to the present invention, (c) Sectional drawing of the opening-and-closing support part of the bonnet rear part of Embodiment 2 in the invention relevant to this invention (A) Right side view of the second embodiment of the invention related to the present invention with the hood closed, (b) Partial enlarged right side view of the second embodiment of the invention related to the present invention with the hood closed. Figure The right view of the state in which the bonnet of Embodiment 2 in the invention relevant to this invention opened The perspective view of the partition plate and fuel tank of Embodiment 2 in the invention relevant to this invention The perspective view of the engine of Embodiment 2 in the invention relevant to this invention. (A) Left side view of partition plate, fuel tank and dashboard of embodiment 2 in invention related to the present invention, (b) Partition plate, fuel tank and dash of embodiment 2 of invention related to the present invention Back view of board The bottom view of the radiator of Embodiment 2 in the invention relevant to this invention The perspective view of the engine periphery of Embodiment 2 in the invention related to the present invention

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
First, the configuration and operation of the tractor 1 of the present embodiment will be specifically described with reference to FIG.

  FIG. 1 is a left side view of the tractor 1 according to the first embodiment of the present invention.

  In the following description, a tractor 1 for agricultural use or various work machine citations is shown as an example of a vehicle such as a work vehicle, and the front-rear direction is the front-rear direction of the tractor 1. Further, the front-rear direction is a traveling direction when the tractor 1 goes straight, and the front side in the traveling direction is referred to as the front side in the front-rear direction, and the rear side is referred to as the rear side in the front-rear direction. The advancing direction of the tractor 1 is a direction from the cockpit 2 of the tractor 1 toward the steering handle 3 when the tractor 1 goes straight. The steering handle 3 side is the front side and the cockpit 2 is the rear side.

  The vehicle width direction is a direction that is horizontally orthogonal to the front-rear direction. Here, the right side is referred to as the right side in the vehicle width direction while the front side in the front-rear direction is viewed, and the left side is referred to as the left side in the vehicle width direction when viewed from the front side in the front-rear direction. Further, the vertical direction is a direction orthogonal to the front-rear direction and the vehicle width direction. The front-rear direction, the vehicle width direction, and the vertical direction are orthogonal to each other.

  FIG. 1 is an overall left side view of the tractor 1 according to the first embodiment. The tractor 1 is a work vehicle such as an agricultural tractor that performs work on a farm field or the like while running on its own by power generated by an engine 4 as a power source. The tractor 1 includes a front wheel 5, a rear wheel 6, the engine 4, and a transmission (transmission) 7. Among these, the front wheel 5 is mainly provided as a steering wheel, that is, a steering wheel. The rear wheel 6 is mainly provided as a driving wheel, that is, a driving wheel. Rotational power generated in the engine 4 mounted in the engine room 4a in the hood 8 at the front of the fuselage can be transmitted to the rear wheel 6 by appropriately decelerating it with a transmission 7 (transmission). The wheel 6 generates driving force by this rotational power. In addition, the transmission 7 can transmit the rotational power generated by the engine 4 to the front wheels 5 as necessary. In this case, the four wheels, the front wheels 5 and the rear wheels 6, serve as driving wheels. Generate driving force.

  That is, the transmission 7 can switch between two-wheel drive and four-wheel drive, and can reduce the rotational power of the engine 4 and transmit the reduced rotational power to the front wheels 5 and the rear wheels 6. Further, the tractor 1 is provided with a connecting device 9 to which a working machine such as a rotary (not shown) can be mounted at the rear of the machine body. The connecting device 9 is configured as a three-point link mechanism including, for example, left and right lower links, a center top link, and the like, and connects the work machine to the rear part of the tractor 1 by the three-point link mechanism.

  Then, by rotating the left and right lift arms (not shown) hydraulically, the work implement can be raised and lowered via a lift rod (not shown), a lower link connected to the lift rod, and the like. .

  The steering handle 3 is erected from the dashboard 10 on the front side of the cockpit 2, and the clutch pedal is provided on the left floor of the dashboard 10, the left and right brake pedals are provided on the right floor of the dashboard 10, and the left and right brakes are provided. An accelerator pedal is arranged on the floor on the right side of the pedal. Various other operation levers such as various other operation pedals and shift levers are arranged around the cockpit 2. A forward / reverse lever is disposed on the lower left side of the steering handle 3, and an accelerator lever or the like is disposed on the lower right side of the steering handle 3.

  Next, the configuration and operation of the tractor 1 of the present embodiment will be described more specifically with reference to FIGS.

  FIG. 2 is a partial perspective view of the front portion of the tractor 1 according to the first embodiment of the present invention.

  FIG. 3 is a partial perspective view around the power steering controller 100 of the tractor 1 according to the first embodiment of the present invention.

  4 (a) is a partial perspective view of the lower part of the steering handle 3 of the tractor 1 according to the first embodiment of the present invention, and FIG. 4 (b) is a manual of the tractor according to the embodiment related to the present invention. It is a fragmentary perspective view of a steering handle lower part. The manual steering post 700 is attached to the manual steering post base 701.

  5A is a rear view of the lower portion of the steering handle 3 of the tractor 1 according to the first embodiment of the present invention, and FIG. 5B is a lower portion of the steering handle 3 of the tractor 1 according to the first embodiment of the present invention. FIG.

  A steering handle 3 is connected to the upper surface of the power steering controller 100. A pipe 200 is connected to the lower surface of the power steering controller 100. A fuel tank 18 is disposed in front of the power steering controller 100. A recess 18p through which the pipe 200 passes is formed on the rear surface of the fuel tank 18.

  The pipe 200 includes a first hose 201, a second hose 202, a third hose 203, fourth hoses 204L and 204R, a fifth hose 205, and a sixth hose 206.

  The second hose 202 is a power steering hose, the third hose 203 is a return hose, and the fourth hoses 204L and 204R are cylinder hoses.

  When the vehicle travels straight, oil from the gear pump 220 passes through the first hose 201, passes through the diversion valve 210, enters the power steering controller 100 through the second hose 202, and passes through the third hose 203 to the gear pump 220. Return to.

  When the right turn is performed, the oil that has come out of the power steering controller 100 enters and exits the right cylinder 230R through the right fourth hose 204R.

  In FIG. 2, the configuration on the right side is clearly visible and the configuration on the left side is hidden. However, the configuration on the left side is the same as the configuration on the right side, and oil left from the power steering controller 100 is left when performing a left turn. The left cylinder (not shown) enters and exits through the fourth hose 204L.

  Further, the oil discharged from the gear pump 220 passes through the first hose 201, passes through the diverter valve 210, passes through the fifth hose 205, and enters the lifting cylinder (not shown) of a working machine such as a rotary, and enters the sixth hose 206. And return to the gear pump 220.

  The rear surface of the fuel tank 18 is formed with a recess 18p in which the second hose 202, the third hose 203, the fourth hoses 204L and 204R, and the like are disposed. Therefore, the position of the steering handle 3 is moved closer to the front side to suppress an increase in the longitudinal length of the fuselage, and the hydraulic hose is intensively arranged to make it easier to accommodate the pipe 200, and the fuel tank 18 has a sufficient capacity. Can be secured.

  The shape of the support pipe member 400 is a substantially U shape having a front-lowering portion that gently curves as will be described later, and the shape of the recess 18p of the fuel tank 18 is not connected to the shape of the support pipe member 400. They are parallel. Therefore, the limited space in the small tractor can be used effectively, and the hydraulic hose arrangement and the steering arrangement can be performed well.

  Next, the support pipe member 400 having the left pipe 401L and the right pipe 401R and having a symmetric configuration will be described in detail with reference mainly to FIGS.

  The left hand-drawn portion of the substantially inverted 8-character shape in the rear view corresponds to the left pipe 401L, and the right hand-drawn portion of the approximately inverted 8-character shape in the rear view corresponds to the right pipe 401R.

  The support pipe member 400 supports the pedestal 300 on which the power steering controller 100 is placed. And the upper end part 400u of the support pipe member 400 is connected with the left side and the right side of the lower surface of the base 300. FIG.

  The lower end portion 400d of the support pipe member 400 is bent. The pipe 200 is in contact with the upper surface of the lower end 400d of the bent support pipe member 400.

  The power steering bracket, which is a mounting portion of the power steering controller 100, is light and has high rigidity and vibration resistance because the inside is hollow, and the volume of the occupied space is small. It is constructed using a pipe frame that is less likely to be damaged. Therefore, it is possible to secure a sufficient tool space when the assembling worker uses the tool for assembling, and to easily attach and detach the piping. The routed hydraulic hose is less likely to be damaged, and the size of the fuel tank 18 can be increased sufficiently to ensure a sufficient capacity without worrying about hose damage. Furthermore, it is possible to reduce adverse effects due to vibrations when the tractor operates.

  The shape of the support pipe member 400 is a substantially inverted octagonal shape having a left and right width W which is large on the upper side and small on the lower side in the rear view, and is substantially U-shaped having a front lowering portion which is gently curved in the side view. It is.

  The reason why a substantially inverted eight-letter shape in the rear view is desirable is as follows. That is, the left-right width W is increased on the upper side where tank accommodation is necessary, and the left-right width W is decreased on the lower side, which is sufficient if the hydraulic hose arrangement can be performed. Then, even if it is difficult to reduce the overall unit size of the support pipe member 400, the capacity of the fuel tank 18 can be sufficiently secured even in a small tractor while suppressing an increase in the overall unit size.

  The reason why the substantially U shape in the side view is desirable is as follows. That is, a bent round pipe is used on the upper surface of the lower end of the pipe frame where the routed hydraulic hose is likely to interfere. Then, there is no need to bother attaching insulators, etc., so that the possibility of damage to the hydraulic hose is reduced, while promoting ease of assembly such as cost reduction, weight reduction, reduction in assembly man-hours, and reduction in the number of parts. Can do.

  It is desirable that the manual steering post 700 is also passed through the recess 18p of the fuel tank 18.

  Next, the diversion valve 210 will be described in detail with reference mainly to FIGS.

  The support 500 supports the lower end 400 d of the support pipe member 400 and is connected to the transmission 7. The diversion valve 210 of the pipe 200 is arranged on the right side of the support body 500.

  Of course, the diversion valve 210 may be disposed on the left side of the support body 500, as long as it is disposed on either the left side or the right side of the support body 500.

  For example, the above-described three-point link mechanism, which is also referred to as a 3P (Points) link mechanism that realizes support at three points of one upper link and two lower links that support the rotary, and the diversion flow to cope with power steering The valve 210 is disposed on either the left side or the right side of the support 500 and is disposed below the fuel tank 18. Therefore, the hydraulic hose is routed through a compact short-distance connection, while ensuring sufficient crew space for workers, improving the ease of assembly, such as weight reduction and reduction in assembly man-hours, and reducing the number of parts. Can do.

  The configuration in which the diverter valve 210 is disposed in the dash cover (not shown) is not a combination of a plurality of gear pumps such as a gear pump for a lifting cylinder of a working machine such as a rotary and a gear pump for a steering. This is particularly effective in a compact tractor configuration where it is desirable to use a single gear pump as in the embodiment.

  Next, the front PTO (Power Take Off) shaft 600 will be described in detail with reference mainly to FIGS.

  6 to 8 are partial perspective views (parts 1 to 3) around the front PTO shaft 600 of the tractor 1 according to the first embodiment of the present invention.

  Here, the bonnet 8 is shown in FIG. 6, but at least a part of the bonnet 8 is not shown in FIGS. 7 and 8 for easier understanding of the internal configuration.

  The front PTO shaft 600 is a shaft for performing transmission to a snow removal machine or a cleaning machine that is a front working machine, and is connected to the crankshaft of the engine 4.

  The front PTO shaft 600 passes under the bracket of the battery 29 and the radiator 28 and protrudes from the notch provided in the bonnet 8 to the front side of the tractor 1.

  Further, not only the cylinder of the power steering controller 100, the crankshaft of the engine 4, the hood of the bonnet 8, the bracket of the battery 29, and the radiator 28, but also the bracket of the front axle, etc., will not interfere with the front PTO shaft 600. Is arranged.

  Therefore, it is possible to connect the front work machine without a large design change involving changes in peripheral parts.

  The configuration of the lower portion of the steering handle 3 of the tractor 1 of the present embodiment (see FIG. 4A) is the configuration of the lower portion of the manual steering handle of the tractor of the embodiment related to the present invention (FIG. 4B). ))), And from the viewpoint of the occupied space called the steering column structure space.

  Therefore, it is possible to easily realize the configuration having the various advantages described above by changing the specification from the manual steering specification to the power steering specification without changing the design of a large current machine with the change of peripheral parts in the dash cover. it can.

(Embodiment 2)
Next, the configuration and operation of the tractor 1 according to the present embodiment will be specifically described with reference mainly to FIGS.

  FIG. 9 is a perspective view of the periphery of the engine 4 according to the second embodiment in the invention related to the present invention.

  FIG. 10 is a plan view of the periphery of the engine 4 according to the second embodiment in the invention related to the present invention.

  FIG. 11 is a rear view of the bonnet 8 according to the second embodiment in the invention related to the present invention.

  FIG. 12 (a) is a perspective view showing a state in which the hood 8 of the second embodiment in the invention related to the present invention is open, and FIG. 12 (b) shows the second embodiment of the invention related to the present invention. It is sectional drawing of the bonnet 8 front part.

  FIG. 13A is a perspective view of the front portion of the tractor 1 according to the second embodiment in the invention related to the present invention, and FIG. 13B is a bonnet 8 according to the second embodiment in the invention related to the present invention. FIG. 13C is a perspective view of the rear opening / closing support part S, and FIG. 13C is a cross-sectional view of the opening / closing support part S at the rear part of the hood 8 according to the second embodiment of the present invention.

  FIG. 14 (a) is a right side view of the second embodiment of the invention related to the present invention with the hood 8 closed, and FIG. 14 (b) is a second embodiment of the invention related to the present invention. It is a partial expanded right view of the state which closed the hood 8.

  FIG. 15 is a right side view showing a state where the bonnet 8 according to the second embodiment in the invention related to the present invention is opened.

  FIG. 16 is a perspective view of partition plate 12 and fuel tank 18 according to the second embodiment of the invention related to the present invention.

  FIG. 17 is a perspective view of the engine 4 according to the second embodiment in the invention related to the present invention.

  18A is a left side view of the partition plate 12, the fuel tank 18 and the dashboard 10 according to the second embodiment of the invention related to the present invention, and FIG. 18B is an invention related to the present invention. FIG. 6 is a rear view of the partition plate, the fuel tank 18 and the dashboard 10 according to the second embodiment.

  FIG. 19 is a bottom view of the radiator 28 according to the second embodiment in the invention related to the present invention.

  FIG. 20 is a perspective view around the engine 4 according to the second embodiment in the invention related to the present invention.

  Now, the configuration of the tractor 1 according to the present embodiment is similar to the configuration of the tractor 1 according to the first embodiment described above. However, for example, there are differences in the configuration related to the bonnet 8. Such differences will be described.

  The supporting structure and opening / closing structure of the bonnet 8 will be described.

  9 is a perspective view with the hood 8 removed, and FIG. 10 is a plan view with the hood 8 removed. The opening / closing support portion S of the bonnet 8 that covers the engine 4 includes a support portion S1 on the airframe side and an attachment portion S2 on the bonnet 8 side. The left and right rotation fulcrum shafts 11L and 11R are provided on the support S1 on the airframe side so as to have a common horizontal axis. Further, a mounting portion S2 that is configured at the rear upper part of the bonnet 8 side is rotatably attached to the left and right rotation fulcrum shafts 11L and 11R, and the front side of the bonnet 8 is opened and closed. The pivot axis is located at the upper part on the rear end side of the bonnet 8.

  And the notch part C is formed in the center part of the rear-end part upper surface of the bonnet 8 so that the support part S1 by the side of the said body may be avoided in planar view. When the bonnet 8 is opened and closed, the rear end portion does not hit the support portion S1 on the airframe side. Thereby, the front side of the bonnet 8 opens greatly.

  A partition plate 12 divides the engine room 4a and the control sections such as the cockpit 2 and the steering handle 3 from each other. The partition plate 12 includes a bulging portion 12a toward the front side of the machine body.

  The bulging portion 12a is integrated with the partition plate 12 and is made of sheet metal. Specifically, the partition plate 12 includes a lower half portion 12d and an upper half portion 12u. Of these, the lower half portion 12d has a flat plate shape, and the upper half portion 12u bulges forward as described above. The bonnet 8 can be stably supported via the rotation fulcrum shafts 11L and 11R by forming a bulging formation of the sheet metal material. By the reinforcement structure by the above-mentioned bulging formation, the number of parts is reduced and the structure becomes inexpensive.

  The bulging portion 12a has a left-right width L1, and a left rotation fulcrum shaft 11L is provided on the left side of the bulging portion 12a, and a right rotation fulcrum shaft 11R is provided on the right side of the bulging portion 12a. Moreover, about the bulging part 12a, you may comprise by the member (left and right plate and convex plate) different from the partition plate 12, and you may make it integral structure by welding etc. When the left and right plates are welded to the partition plate 12, the left and right width L1 is secured, the left rotation fulcrum shaft 11L is provided on the left plate, and the right rotation fulcrum shaft 11R is provided on the right plate. The left and right width L1 is secured also for the convex plate, the left rotation fulcrum shaft 11L is provided on the left side of the convex plate, and the right rotation fulcrum shaft 11R is provided on the right side of the convex plate. As described above, the bulging portion 12a forms the support portion S1 on the airframe side. Thereby, the separate member which supports support part S1 becomes unnecessary.

  On the other hand, since the attachment portion S2 on the bonnet 8 side is configured on the bonnet 8 side, the attachment portion S2 will be described in detail.

  In FIG. 11, the figure which looked at the bonnet 8 from the aircraft body rear side is shown. FIG. 12 shows a state in which the hood 8 is opened as seen from the front side of the machine body, so that the hood 8 itself is seen from the lower side. FIG. 13A shows a perspective view of the bonnet 8 viewed from the front side of the body.

  A notch C is formed at the central rear end of the upper surface 8 a of the bonnet 8. This notch C is formed in a concave shape. FIG. 13B shows an enlarged view of the notch C portion.

  In the cutout C portion formed in a concave shape, the bulging portion 12a is arranged to correspond. That is, the notch C is formed in the bonnet 8 so as to avoid the bulging portion 12a. Furthermore, the bending part C1 is formed over the perimeter of the notch part C currently formed in the concave shape.

  The right mounting plate 13R is fixed to the right bent portion C1R of the bent portion C1 by welding. The right mounting plate 13R is formed with a recess 13Ra for receiving the right rotation fulcrum shaft 11R. In addition, a hole 13Rb is formed in the right mounting plate 13R. After the right turning fulcrum shaft 11R is inserted into the recess 13Ra of the right mounting plate 13R, the hole 14Ra of the right fixing plate 14R is inserted into the right turning fulcrum shaft 11R, and the right mounting plate 13R and the right fixing plate 14R are bolted. The nut 15R is fastened and fixed. FIG. 13C shows a cross-sectional view of this configuration. Since the left rotation fulcrum shaft 11L has the same configuration as the attachment of the right rotation fulcrum shaft 11R described above, the description thereof is omitted.

  As described above, the partition plate 12 is formed with the bulging portion 12a toward the front side of the fuselage, the left rotation fulcrum shaft 11L is provided on the left side of the bulging portion 12a, and the right side of the bulging portion 12a is on the right side. A rotation fulcrum shaft 11R is provided. And the notch C is formed in the bonnet 8 so that the bulging part 12a may be avoided in planar view. Thus, when the bonnet 8 is opened upward with the left and right rotation fulcrum shafts 11L and 11R as the center, the bonnet 8 is opposed to the bulging portion 12a supporting the left and right rotation fulcrum shafts 11L and 11R. Since the rear portion does not hit, it can be rotated until the upper surface portion 8a of the bonnet 8 hits the partition plate 12 beyond the vertical direction. However, as shown in FIG. 15, the hood 8 is fixed and supported by the fixing rod 16 in a state where the bonnet 8 is opened in a substantially vertical direction. FIG. 14 shows a state where the hood 8 is closed.

  As shown in FIGS. 12 and 15, the fixing rod 16 is inserted into a hole 36 formed in the bonnet 8, and a portion 16 a portion facing this insertion portion and the other end side (the front side of the machine body) of the fixing rod 16. By making the angle K1 between and an obtuse angle, the open state of the hood 8 is widened. The fixing rod 16 has a notch 16b. When the fixing rod 16 is inserted into the hole 36 formed in the bonnet 8, the notch 16b engages with the hole 36 so that the fixing rod 16 is fixed. The rod 16 is difficult to come off.

  Since the hole 36 formed in the bonnet 8 is formed in the flange 8f that connects the upper bonnet 8u and the side bonnet 8s constituting the bonnet 8, a separate member for forming the hole 36 in the bonnet 8 becomes unnecessary. .

  Further, the other end side (the front side of the machine body) of the fixing rod 16 is inserted into the hole 31 a of the front partition plate 31. The hole 31 a of the front partition plate 31 is formed in a diameter hole that is about 1.5 times the diameter of the fixing rod 16. This increases the degree of freedom of movement of the fixing rod 16 in the up / down, front / rear, and left / right directions, which facilitates handling. Even in the portion where the fixing rod is inserted into the hole 31a of the front partition plate 31, the fixing rod 16 is bent at an obtuse angle, so that the handling becomes easy.

  Further, the angle when the bonnet 8 is opened can be determined by the angle K2 at which the fixing rod 16 is formed.

The plan view of FIG. 10 also shows the storage state when the fixing rod 16 is not used. Since the fixing rod 16 is accommodated so as to hold the air cleaner duct 37 made of a resin material from above, vibration of the air cleaner duct 37 can be suppressed. Further, since the air cleaner duct 37 is made of a resin material, vibration of the fixing rod 16 itself can be suppressed.
The air cleaner duct 37 sends outside air into the air cleaner storage case 1.

  An annular locking body 38 made of a resin material is attached to the front partition plate 31. The fixing rod 16 is fitted into the annular locking body 38, and the fixing rod 16 is stored and fixed. It is configured.

  Moreover, since the light cover 42 and the light grille 43 are integrally formed of a resin material, the number of parts can be reduced.

  In addition, a spring plate 34 is attached to the lower portion of the front side of the bonnet 8. When the bonnet 8 is lowered and closed, the spring plate 34 is locked to the lock bar 35. FIG. 12B shows a state where the spring plate 34 is locked to the lock bar 35. Since the spring plate 34 always returns in the direction of the arrow Y1, the spring plate 34 does not come off the lock bar 35. When the spring plate 34 is held by hand and a force is applied in the direction of the arrow Y2, the spring plate 34 is detached from the lock bar 35 and the bonnet 8 can be raised.

  Compression springs 44L and 44R are provided on both sides of the spring plate 34. When the bonnet 8 is closed, the left and right compression springs 44L and 44R abut against the front plate 44 (see FIG. 10) and are compressed to some extent. Therefore, the force with which the spring plate 34 is engaged with the lock bar 35 is increased. Thereby, the bonnet 8 is reliably hold | maintained in the closed state.

  FIG. 16 is a view of the fuel tank 18 as viewed from the left rear side. As shown in FIGS. 16 and 9, the fuel tank 18 is attached to the rear side of the partition plate 12. Thereby, a separate member for supporting the fuel tank 18 becomes unnecessary.

  The flange 18 a of the fuel tank 18 and the partition plate 12 are fixed with bolts and nuts 19. This fixed part is comprised in two places on the left side and two places on the right side. FIG. 16 shows two bolts and nuts 19 on the left side. FIG. 9 shows two bolts and nuts 19 on the right side.

  A central front side portion of the fuel tank 18 is configured as a fuel tank convex portion 18b. And the fuel tank convex part 18b which is a part of the fuel tank 18 is set to enter the rear side of the bulging part 12a part of the partition plate 12. This increases the capacity of the fuel.

  As shown in FIG. 16, the partition plate 12 is inserted into bolt fastening holes 50, 50 in the left and right leg-like portions 12e, 12e of the lower half 12d, and is attached to the airframe side plate (not shown). Yes. The left and right ends of the lower half 12d of the partition plate 12 are provided with brackets 12f and 12f for reinforcing fastening and are appropriately fixed. The vehicle body side plate indicates an intermediate plate 51 that rigidly connects the rear portion of the engine 4 frame and the case of the transmission 7.

  In the illustrated example, the bulging portion 12a of the partition plate 12 includes a second bulging portion 12as having a slightly wider width in addition to the first bulging portion 12af for mounting the left and right rotation shafts 11L and 11R. And the lower half 12d is continuous. These particularly bulging shapes are formed so as to secure the capacity of the fuel tank 18 as much as possible in relation to peripheral devices.

  A fuel supply port 18 c is formed on the upper surface of the front convex portion 18 b of the fuel tank 18, and a fuel cap 20 is provided at the mouth portion. A fuel tray 21 is provided around the cylindrical upright portion of the fuel filler opening 18c. The fuel receiving tray 21 is made of rubber, has a double-structured folded groove 21a on the outer periphery, and has upper edges of the first bulging portion 12af and the second bulging portion 12as of the partition plate 12. It is fitted and fixed to. Further, a shallow bottom portion on the outer peripheral side and a portion close to the oil supply port 18c side are formed in the deep bottom portion, so that fuel spilled during fuel supply or fuel overflowing from the oil supply port 18c can be received. In addition to this, the fuel tray 21 can prevent the fuel tank 18 from being directly seen from the notch C of the bonnet 8. The fuel tank 18 may be made of sheet metal or resin.

  As shown in FIGS. 15 and 16, a front support stay 22 is provided between the cylinder head 4 b of the engine 4 and the bulging portion 12 a of the partition plate 12. Thereby, the vibration of the partition plate 12 and the fuel tank 18 is suppressed, and the load when the fuel is fully loaded in the fuel tank 18 is supported.

  As shown in FIG. 16, in the lower part of the partition plate 12, two holes 32 are formed on the left side, and two holes 32 are also formed on the right side. As shown in FIG. 18, the lower part of the partition plate 12 is fixed to the lower part of the dashboard 10 with bolts and nuts 33. Thereby, the support of the partition plate 12 becomes strong.

  As shown in FIG. 15, when the bonnet 8 rotates in a substantially vertical direction, substantially the entire air cleaner storage case 17 becomes visible. As shown in FIGS. 9 and 10, the air cleaner storage case 17 is disposed in front of the bulging portion 12 a of the partition plate 12. And the air cleaner storage case 17 is cylindrical shape, The longitudinal direction is arrange | positioned in the left-right direction of the body. An air cleaner element 17 b is stored in the air cleaner storage case 17. A storage lid 17a is provided on the right side of the air cleaner storage case 17, and the air cleaner element 17b in the air cleaner storage case 17 can be attached and detached from the right side of the machine body by removing the storage lid 17a.

  As described above, when the bonnet 8 rotates in a substantially vertical direction, almost the entire air cleaner storage case 17 can be visually recognized. Therefore, the storage lid 17a of the air cleaner storage case 17 can be attached and detached, and the air cleaner element in the air cleaner storage case 17 can be attached. The attachment / detachment of 17b can be easily performed without being obstructed by the hood 8. Further, since the air inlet 17c of the air cleaner storage case 17 faces the front of the machine body, the connection with the air cleaner duct 37 is facilitated.

  As shown in FIG. 17, the air cleaner storage case 17 is attached to the upper part of the engine 4. FIG. 17 is a view seen from the diagonal right direction in front of the aircraft. An air cleaner support stay 23 is attached to the front side of the air cleaner storage case 17 with a bolt 24. And under the air cleaner support stay 23, it is the structure attached with the volt | bolt 25 with respect to the front side of the cylinder head 4b.

  The air cleaner support stay 23 is formed with a hole 23a. When the air cleaner storage case 17 is removed from the air cleaner support stay 23, the hole 23a of the air cleaner support stay 23 can be used as a hanger when the engine 4 is suspended and moved.

  As shown in FIGS. 9, 10, and 12, a muffler 26 is disposed on the left side of the bulging portion 12 a portion of the partition plate 12, and an exhaust pipe 27 is attached toward the lower side of the fuselage. A radiator 28 is mounted in front of the air cleaner storage case 17 via a front partition plate 31, and a battery 29 is mounted in front of the radiator 28. On the left side of the battery 29, a cooling water sub tank 30 of the engine 4 is mounted.

  FIG. 19 is a view of the radiator 28 as viewed from below. A drain hose 39 is attached to a drain port 41 for discharging the cooling water in the radiator 28. The other end side of the drain hose 39 is inserted into the protrusion 40. Thereby, when the drain hose 39 is removed from the protrusion 40, the cooling water in the radiator 28 can be easily discharged.

  The configuration of the second embodiment in the invention related to the present invention described above is that the support structure of the fuel tank is simplified, and when the fuel tank is arranged and configured by effectively using the rear part of the bonnet, the support structure is a heat shield. It tries to eliminate the disadvantage that it is complicated by overlapping with the board.

That is, the first invention related to the present invention is that the partition plate (12) is erected on the rear part of the bonnet (8) covering the engine (4) via the vehicle body side plate (51),
A bulging portion (12a) is provided in the partition plate (12);
A fuel tank (18) is formed behind the partition plate (12), and a convex portion (18b) bulging forward of the fuel tank (18) enters the bulging portion (12a) of the partition plate (12). A work vehicle in which the fuel tank (18) is fixed to the partition plate (12), and the fuel supply port (18c) is arranged in the convex portion (18b) located at the bulging portion (12a). And

  If comprised in this way, a convex part (18b) can approach a fuel tank (18) toward the bulging part (12a) of a partition plate behind a partition plate (12), and expansion expansion ensuring of a tank capacity is ensured. I can plan.

  According to a second invention related to the present invention, in the first invention related to the present invention, the partition plate (12) is a sheet metal material composed of an upper half (12u) and a lower half (12d), and the upper half A first bulge portion (12af) and a second bulge portion (12as) having a slightly wider width are formed continuously on the portion (12u) and the first bulge portion (12af).

  By bulging and forming the sheet metal material, the support component of the fuel tank (18) can be made rigid.

  According to a third invention related to the present invention, in the first or second invention related to the present invention, a locking groove (21a) formed in the fuel tray (21) is formed on the upper edge of the bulge portion (12a). It is set as the structure supported by fitting. The fuel that has overflowed from the fuel supply port (18c) is received by the fuel tray (21).

  In the first invention related to the present invention, the convex portion (18b) can enter the bulging portion (12a) of the partition plate, and the expansion of the tank capacity can be ensured.

  In the second invention related to the present invention, in addition to the effect of the first invention related to the present invention, the support component of the fuel tank (18) can be made rigid by bulging the sheet metal material. Thus, the reinforcement structure can be reduced and the configuration can be simplified.

  In addition to the effects of the first or second invention related to the present invention, the third invention related to the present invention includes a locking groove (21) formed in the fuel tray (21) on the upper edge of the bulging portion (12a). Since 21a) is fitted and supported, the mounting structure can be simplified.

  The configuration of the present embodiment described above can be used for general vehicles including agricultural machines such as tractors.

  The vehicle according to the present invention can more easily accommodate the power steering pipe. For example, the vehicle is used for a vehicle such as a work vehicle such as an agricultural tractor in which a fuel tank is disposed at the rear part in the engine bonnet. Useful for.

3 Steering handle 4 Engine 8 Bonnet 11L Left rotation fulcrum shaft 11R Right rotation fulcrum shaft 12 Partition plate 12a Expansion portion 12af First expansion portion 12as Second expansion portion 12u Upper half portion 12d Lower half portion 17 Air cleaner storage case 18 Fuel tank 18b Convex portion 18c Refueling port 18p Concavity 21 Fuel receiving tray 21a Locking groove 26 Muffler 28 Radiator 51 Intermediate plate 100 Power steering controller 200 Piping 201 First hose 202 Second hose 203 Third hose 204L, 204R Fourth hose 205 Fifth hose 206 Sixth hose 210 Flow dividing valve 220 Gear pump 230R Cylinder 300 Base 400 Support pipe member 401L, 401R Pipe 500 Support body 600 Front PTO shaft 700 Manual steering post 701 Manifold Pedestal for Al steering post

Claims (3)

Engine (4),
A bonnet (8) covering the engine (4);
A steering section (2a) provided behind the engine (4);
A partition plate (12) that partitions the engine (4) and the control unit (2a);
A fuel tank (18) disposed behind the partition plate (12);
With
A radiator (28) is provided in front of the engine (4), an air cleaner storage case (17) and a muffler (26) are provided between the radiator (28) and the partition plate (12), and the air cleaner storage case (17) The longitudinal direction is arranged so as to extend from the front side of the bulging portion (12a) toward the outer side in the left-right direction of the airframe, and the storage lid (17b) of the air cleaner storage case (17) is provided on the left and right outer surfaces. A muffler (26) is provided on the left and right sides of 12a)
A battery (29) is provided in front of the radiator (28),
A front plate (44) for mounting the battery (29) is provided;
A bulging portion (12a) is formed at the upper part of the partition plate (12) toward the front side of the fuselage, and the front portion of the fuel tank (18) enters the rear side of the bulging portion (12a). A left turning fulcrum shaft (11L) is provided on the left side of the bulging portion (12a), a right turning fulcrum shaft (11R) is provided on the right side of the bulging portion (12a), and the bulging portion (12a) is seen in plan view. Form a notch (C) in the bonnet (8) to avoid
A spring plate (34) and compression springs (44L, 44R) are attached to the lower part of the front side of the bonnet (8), and a lock bar (35) is attached to the front plate (44) side.
When the bonnet (8) is closed, the spring plate (34) contacts the lock bar (35), and the compression springs (44L, 44R) contact the front plate (44) in the compressed state.
When the bonnet (8) is opened upward about the left and right pivot fulcrum shafts (11L, 11R), the bonnet (8) is configured to be pivotable beyond the vertical direction and rotated beyond the vertical direction (8 ) Is fixedly supported by the fixing rod (16) in a state of being opened in a substantially vertical direction .   The bulging part (12a) is formed in the left and right center part of the upper part of the partition plate, and the front part of the fuel tank (18) entering the rear side of the bulging part (12a) is narrower than the rear part. The tractor according to claim 1. The left mounting plate (13L) fixed to the left rotation fulcrum shaft (11L) is fixed to the left side of the notch (C) so as to avoid the bulging portion (12a) in plan view. A bent portion (C1L) having a bent portion (C1L) and a right-side bent portion (C1R) to which a right mounting plate (13R) rotatably attached to the right rotating fulcrum shaft (11R) is fixed. The tractor according to claim 1 or 2, wherein is formed on the bonnet (8) side over the entire circumference .