JP2013006567A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a distance between a power steering control and a steering handle, reduce the number of bent joints of a steering shaft and improve the operability by arranging the power steering controller near a connection part of an engine to a mission case and at an almost intermediate position between a starter cell motor on the left side of a vehicle and an exhaust manifold.SOLUTION: In a working vehicle, the power steering controller 16 for steering/control of right-and-left front wheels 4, 4 through a power steering by operating a steering wheel 6 is arranged near the connection part of the engine E to the mission case 3 and at the intermediate position between the starter cell motor 12, which is positioned on the left side of the working vehicle, and the exhaust manifold 13.

Description

  The present invention relates to a work vehicle such as a tractor.

  Patent Document 1 discloses a configuration in which a power steering valve is continuously arranged on a steering shaft extending from a steering handle.

JP 2007-331638 A

  In the case of the present invention, the power steering controller is disposed in the vicinity of the matching portion between the engine and the transmission case, and is disposed at a substantially intermediate portion between the starter cell motor and the exhaust manifold on the left side of the vehicle, thereby The object is to improve the operability by shortening the distance and reducing the number of breaks in the joint portion of the steering shaft.

In order to solve the above problems, the present invention has taken the following technical means.
That is, according to the present invention, the power steering controller (16) that controls the steering of the left and right front wheels (4) and (4) via the power steering by the operation of the steering handle (6) is provided with the engine (E) and the mission. The work vehicle is characterized in that it is disposed in the middle in the vertical direction of the starter cell motor (12) and the exhaust manifold (13) located on the left side of the vehicle in the vicinity of the mating portion of the case (3).

  According to the said structure, the steering shaft which connects a power steering controller (16) and a steering handle (6) can be shortened, and the bending point of a joint can be comprised by two points. This reduces the cost and improves the operability of the steering wheel.

  According to a second aspect of the present invention, in the first aspect, the controller (16) is set at a predetermined angle (P) so that the front is outward and the rear is inward in plan view. Work vehicle.

  According to the said structure, the angle of the joint breakage point of the steering shaft (10) which connects a power steering controller (16) and a steering handle (6) can be made small, and an operation feeling improves.

  According to a third aspect of the present invention, in the first or second aspect, the bracket (17) for fixing the power steering controller (16) is a DPF (14) support bracket (15) disposed on the upper part of the engine (E). The work vehicle is characterized in that the bracket (17) of the controller (16) and the shaft holder (18) are integrated.

  According to the above configuration, a special support member for attaching the bracket (17) of the power steering controller (16) is not required, and the controller bracket (17) and the shaft holder (18) are integrated, so that the number of parts is increased. As much as possible, the cost can be reduced.

  According to a fourth aspect of the present invention, in the first, second, or third aspect, the hydraulic pipe mounting surface (19) of the power steering controller (16) is configured to overlap the DPF (14). The working vehicle is a feature.

  According to the above configuration, the hydraulic pipe mounting surface (19) of the power steering controller (16) overlaps the DPF (14), so that the amount of pipe jumping out to the vehicle outer side can be minimized.

  In short, according to the first aspect of the present invention, the distance between the power steering control and the steering handle can be shortened, and hence the effective length of the steering shaft can be shortened. Can be implemented in a simple and inexpensive manner.

  According to the second aspect of the present invention, in addition to the effect of the first aspect, the bending angle of the joint portion connecting the power steering controller and the steering handle can be reduced, and the operational feeling can be improved. .

According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the number of parts can be reduced as much as possible, and the cost can be reduced.
According to the fourth aspect of the present invention, in addition to the effect of the first aspect, the second aspect, or the third aspect, it is possible to reduce the amount of the hydraulic pipe that protrudes outward from one vehicle as much as possible.

Side view of tractor Side view showing engine, mission, power steering mechanism, etc. Rear view of the main part Perspective view of essential parts including engine, gear pump, power steering controller, etc. Side view of the main part Plan view of the main part of the tractor body Side view of the main part Perspective view of engine hood (bonnet) and perspective view of each part flowchart Top view of meter panel Top view of the monitor panel

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a tractor. An engine E is mounted inside a bonnet 2 at the front of the traveling vehicle body 1, and the rotational power of the engine E is transmitted to a transmission in the transmission case 3 and is decelerated by the transmission. The generated rotational power is transmitted to the front wheel 4 and the rear wheel 5. A steering handle 6 for steering the front wheels 4, 4 is provided behind the engine E, and a driver's seat 7 is installed behind the steering wheel 6, and the steering handle 6 and the driver's seat 7 are covered with a cabin 8.

On the rear side of the vehicle body 1, a rotary work machine R that is lifted and lowered by a lift arm 9 is provided.
On the left side of the engine E, a starter cell motor 12 and an exhaust manifold 13 are installed. A DPF (soot removal device) 14 of the engine E is mounted and supported by a support bracket 15 protruding from the transmission case.

  A power steering controller 16 that controls steering of the left and right front wheels 4 and 4 through power steering (power steering) by operating the steering handle 6 is connected to the starter cell motor 12 and the exhaust on the left side of the vehicle in the vicinity of the joint between the engine E and the transmission case 3. It is arranged at a substantially middle part with the manifold 13.

  Further, the power steering controller 16 is set at a predetermined angle so that the front is outward and the rear is inward in plan view, whereby the joint portions 10a and 10b of the steering shaft 10 connecting the power steering controller 16 and the steering handle 6 are bent. The corner is made small.

  The controller bracket 17 that fixes and supports the power steering controller 16 is attached to the DPF support bracket 15. The controller bracket 17 and the shaft holder 18 are integrated so as to be composed of one component.

  Further, the hydraulic pipe mounting surface 19 of the power steering controller 16 is configured to be an inclined surface (approximately 45 degrees) obliquely downward when viewed from the back, so that the hydraulic pipe 20 can be easily coupled from below.

  Moreover, since the hydraulic piping mounting surface (19) of the power steering controller (16) overlaps the DPF (14), the amount of piping protruding to the outside of the vehicle can be minimized.

  4 and 5, in the configuration in which the gear pump 21 and the distributor 22 are arranged on the left side surface of the engine E, the power steering controller 16 is arranged at the rear position thereof, so that the hydraulic equipment is connected to the engine. It can be arranged compactly.

  The embodiment shown in FIGS. 6 and 7 will be described. In the tractor in which the left and right tanks 24L and 24R are arranged below the floor, the mounting position of the under frame 26 connecting the front portion 27 and the rear mount portion 28 of the loader is conventionally determined. It is comprised so that arrangement | positioning space of the connection hose 25 of a right-and-left tank can be ensured by comprising so that it may attach to the attachment position B of the lower side from the attachment position A. Further, by configuring the underframe 26 so as to pass below the tanks 24L and 24R, the tank shape is not restricted by the underframe, and the tank capacity can be largely secured.

The engine hood (bonnet) of the tractor shown in the example of FIG. 8 (FIGS. 8-1 to 8-9) will be described.
The engine hood 2 shown in FIG. 8 is assembled with the grill 35 in FIG. 8-6, the upper net 36 in FIG. 8-7, the headlamp 37 in FIG. 8-8, and the lower net 38 in FIG. 8-9. Consists of. Further, the engine hood 2 includes an upper hood 30 of FIG. 8-1, a side frame 31 of FIG. 8-2, a front hood 32 of FIG. 8-3, a rear frame 33 of FIG. 8-4, and a front of FIG. 8-5. It is configured by welding each part of the part frame 34.

  In the shape matching portions of the left and right side hoods 31 and the headlamps 37, the side hoods 31 are included in one stage, and the lenses of the headlamps 37 are overlapped, so that it is possible to avoid deterioration in appearance due to variations in component shapes.

  Further, in the welding of the upper hood 30 and the front hood 32, spot welding is prevented from remaining on the hood surface by performing spot welding using a bent flange portion. Further, the flange portion subjected to spot welding can be used for mounting the upper net 36 and the headlamp 37, which is advantageous in terms of strength.

A bracket shape for fixing the grill 35 of FIG. 8-6 to the grill mounting portion 35a of the front frame 34 of FIG. 8-5 is integrated.
A bracket shape for fixing the upper net 36 (FIG. 8-7) to the upper net attachment portion 36a of the front frame 34 of FIG.

A bracket shape for fixing the headlamp 37 (FIGS. 8-8) to the headlamp mounting portion 37a of the front frame 34 of FIG.
A bracket shape for fixing the lower net 38 (FIG. 8-9) to the lower net attachment portion 38a of the front frame 34 in FIG.

In addition to the above, the front frame 34 of FIG. 8-5 is provided with a horn attachment portion and a hood lock hook attachment portion.
In a tractor equipped with a seat switch that detects when the operator is seated in the driver's seat and can monitor the water temperature and the mission oil temperature, when the operator is not seated during warm-up operation, When the oil temperature exceeds the set temperature, a buzzer for notifying that is sounded and the engine is stopped (see the flowchart of FIG. 9). By providing such energy saving means in the tractor, it is possible to suppress the fuel consumption of the engine due to being left over.

  Furthermore, in the tractor having the above configuration, when the water temperature and the oil temperature are lower than the set temperature, the warning buzzer is intermittently sounded for a certain period of time to notify the operator to prevent the warm-up effect from being lost. Good (see FIG. 9).

  An image captured from the outside can be displayed on the liquid crystal display screen of the meter panel 40 shown in FIG. For example, a grandchild image is displayed as shown in the figure. A USB terminal or the like may be provided for image capture.

  In addition, when an image captured from the outside can be displayed on the liquid crystal display screen, the sound captured from the outside can also be output from the speaker at regular intervals. For example, if the grandchild's image is displayed and the grandchild's voice is registered, the voice can be output periodically.

In the embodiment shown in FIG. 11, the tractor usage history is displayed as the content to be displayed on the tractor monitor panel 41 to help determine the farming policy.
In addition, the state of the field will be photographed with a digital camera mounted on the tractor so that it can be displayed along with past logs on the monitor.

  According to such a monitor panel, it is possible to display the tractor usage history and display the state of the farm field photographed at that time on the monitor panel, which can be used for determining the farming policy. Photographing can be performed while looking at the monitor while sitting on the seat of the tractor.

E Engine 3 Mission case 4 Front wheel 6 Steering handle 10 Steering shaft
10a Joint 10b Joint 12 Starter Cell Motor 13 Exhaust Manifold 14 DPF
15 DPF support bracket 16 Power steering controller 17 Controller bracket 18 Shaft holder 19 Hydraulic piping mounting surface 20 Hydraulic piping
21 Bracket 22 Battery 23 Battery support member

Claims (4)

  A power steering controller (16) for steering control of the left and right front wheels (4), (4) through the power steering by operating the steering handle (6) is installed in the vicinity of the joint of the engine (E) and the transmission case (3). A work vehicle characterized in that it is arranged in the middle in the vertical direction between the starter cell motor (12) and the exhaust manifold (13) located on the left side.   The work vehicle according to claim 1, wherein the controller (16) is set at a predetermined angle (P) so that the front is outward and the rear is inward in plan view.   The bracket (17) for fixing the power steering controller (16) is configured to be attached to the DPF (14) support bracket (15) disposed on the upper part of the engine (E), and the bracket (17) of the controller (16) and the shaft The work vehicle according to claim 1 or 2, wherein the holder (18) is integrally formed.   The work vehicle according to claim 1, 2 or 3, wherein the hydraulic pipe mounting surface (19) of the power steering controller (16) is configured to overlap the DPF (14).

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