JP2012245928A - Working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working vehicle with a lifting device capable of easily raising up an oil feeding tank to a level close to a filler opening of a tractor front portion.SOLUTION: The working vehicle includes a filler opening 9 leading to a fuel tank 8 on front portion top of machine body. The working vehicle is equipped with a lifting device 10 located at front portion side of the machine body to place an oil feeding tank T, and raises up and conveys the oil feeding tank T to a level close to the filler opening 9. Further, a configuration of the working vehicle is characterized in that, in the lifting device 10, a cradle 11 that places the oil feeding tank T is located on the front side of the machinery body front portion, a suspension cradle 13 of a lift arm 12 that lifts the cradle 11 is attached and supported to a vehicle body frame 18 of the machine body lateral side portion.

Description

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

  2. Description of the Related Art Conventionally, there is a configuration in which a fueling table on which a fuel tank is placed is installed near a fueling port of a fuel tank provided in an upper bonnet of a tractor front (see, for example, Patent Document 1).

JP 2006-44423 A

Since the fueling stand having the above-described configuration is located at a very high position, it takes a lot of labor to lift the full fueling tank (18).
The subject of this invention is providing the lift apparatus which can lift a fuel tank lightly to a predetermined position.

In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention described in claim 1 is a work vehicle provided with a fuel filler opening (9) communicating with the fuel tank (8) at an upper portion on the front side of the fuselage. The working vehicle is equipped with a lift device (10) for placing and transporting the fuel tank (T) up to the vicinity of the fuel filler port (9).

  According to the above configuration, the fuel tank (T) can be lightly lifted and transported from a low position near the ground to a high position near the fuel filler port (9) with the fuel tank (T) mounted, and the fuel tank (T) is maintained in a stable posture. In this state, the oil can be easily supplied by a pump or the like.

  According to a second aspect of the present invention, in the lift device (10), the cradle (11) on which the fuel tank (T) is placed is located on the front side of the front part of the machine body and lifts the cradle (11). 2. The work vehicle according to claim 1, wherein the suspension base (13) of the arm (12) is attached to and supported by a vehicle body frame (18) on a lateral side of the machine body.

According to the above configuration, the transfer from the front side of the machine body of the fuel tank (T) to the vicinity of the fuel inlet (9) from the rear upper part can be easily performed.
According to a third aspect of the present invention, the lift device (10) includes a cradle (11) on which the fuel tank (T) is placed and a lift arm (12) that raises and lowers the cradle. 12. The work vehicle according to claim 1, wherein lifting means (16) for lifting and lowering a lift arm (12) is provided between the suspension base (12) and the suspension base (13). .

According to the above configuration, the heavy oil tank (T) can be lightly lifted and transported with a light operating force even by using driving means such as an electric motor or a hydraulic cylinder.
According to a fourth aspect of the present invention, the elevating means (16) comprises a rotating handle (15) and a helical shaft (14), and the lift arm (12) is moved by rotating the rotating handle (15). 4. The work vehicle according to claim 3, wherein the work vehicle is configured to be driven up and down.

According to the said structure, a lift arm (12) can be reliably driven up and down with a simple structure, and it can implement at low cost.
The invention according to claim 5 is the work vehicle according to claim 3 or claim 4, wherein the cradle (11) is a box-shaped container.

  According to the said structure, it can utilize also as a conveying apparatus, can put and convey materials, such as a farming tool and a fertilizer used for agricultural work.

  In short, according to the first aspect of the present invention, the fuel tank can be lightly lifted and transported from a low position near the ground to a high position near the fuel filler port with the fuel tank placed thereon, and the fueling operation can be easily performed.

  According to the second aspect of the present invention, while achieving the effect of the first aspect, it is possible to easily lift and convey the fuel tank from the front side of the machine body to the vicinity of the fuel filler port. The platform is located in front of the aircraft, so it will not hinder the operation.

  According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the heavy oil tank can be lightly lifted and transported with a light operating force by using an appropriate driving means.

  According to the fourth aspect of the present invention, the raising / lowering drive configuration by the rotating handle and the helical shaft is simple, and the lifting arm can be reliably driven up and down by a simple operation by simply rotating the rotating handle, and is inexpensive. Can be implemented.

  According to the fifth aspect of the present invention, since the cradle is configured in a box shape, it can also be used as a transport device, and can be transported with materials such as farm tools and fertilizer.

Side view of tractor Perspective view of main part of tractor with lift device Perspective view of the main part Perspective view of essential parts of 2P quick hitch Perspective view of the main part A perspective view of a simple hitch for 2P link type rotary The perspective view of the principal part which shows the raising / lowering apparatus of a rotary cover The perspective view which shows the attachment structure of the safety valve of the cylinder case for 3P raising / lowering The perspective view which shows the mounting structure of the external hydraulic valve of a cylinder case same as the above Perspective view of tow type mud collector for tractor Side view

An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a vehicle body of a tractor as an example of a work vehicle. 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 used to change the speed in a transmission case 3. The rotational power decelerated by the transmission is transmitted to the front wheels 4 and the rear wheels 5. A steering handle 7 for steering the front wheels 4 and 4 is provided in front of the driver's seat 6 installed at the rear of the body. A fuel tank 8 is disposed at the top of the engine E. The fuel tank 8 has a fuel filler opening 9 at the top, and can be refueled from the top of the bonnet 2.

A lift device 10 which is installed on the front side of the machine body and places a fuel tank and lifts and conveys it to the vicinity of the fuel inlet at the top of the hood will be described.
The lift device 10 includes a cradle 11 on which a fuel tank polytank T is placed, a lift arm 12 that raises and lowers the cradle 11, and a suspension base 13 that pivotally supports the lift arm 12 so as to be swingable in the vertical and front-rear directions. A lifting shaft 16 provided between the lift arm 12 and the suspension base 13 and including a helical shaft 14 and a rotating handle 15 for driving the lift arm 12 up and down is provided.

  The cradle 11 is a box-shaped container and can accommodate materials such as farm tools and fertilizer in addition to the oil tank. The cradle is disposed on the front side of the front portion of the tractor, and is lifted along the upper surface of the bonnet from the front side of the bonnet by the lift arm 12.

  The lift arm 12 swings up and down around the support shaft 17 with respect to the suspension base 13. When the rotating handle 15 is turned, the lift arm 12 moves up and down around the support shaft 17 by the rotation of the spiral shaft 14. It is the structure which rocks.

  The suspension base 13 is arranged and configured so that a lift range from the front side of the machine body to the upper rear side by the lift arm can be increased by attaching (supporting bolts detachably) the body frame 18 on the front lateral side of the machine body. Yes. The elevating means 16 may be one that drives the lift arm up and down using an electric motor, a hydraulic cylinder, or the like. However, as shown in the figure, the elevating means 16 is driven up and down by rotating the spiral shaft by manual operation with a rotating handle. Even in this case, the configuration is simple and can be implemented at low cost.

  In FIG. 1, a hydraulic cylinder case 21 is provided in the upper part of the transmission case 3, and a lift operation arm 22 is pivotally attached to the hydraulic cylinder case 21. When the hydraulic oil is supplied into the hydraulic lift cylinder 23 in the hydraulic cylinder case 21, the lift operating arm 22 is turned up, and when discharged, the lift operating arm 22 is lowered. A work machine R such as a rotary mounted on the rear part of the tractor is moved through a three-point link mechanism constituted by a lower link 25 and a top link 26 connected by a lift rod 24 by raising and lowering the lift operating arm 22. It is designed to go up and down.

  4 and 5 show an elastic body 31 that can elastically displace the lower portion of the joint housing portion 30 of the joint 29 supported by the 2P quick hitch 27 in order to stabilize the posture of the joint housing portion when the work machine is not mounted. It is comprised so that it may support in a substantially horizontal attitude | position. According to this, it is possible to prevent the joint from being damaged when the work implement is not mounted by holding the joint housing portion horizontally. Moreover, since it supports with an elastic body, the inclination angle of a joint required at the time of attachment or detachment can be obtained.

  Also, in the illustrated example, left and right hooks 32, 32 provided outside the left and right support frames 28, 28 are connected by a rod 33 and locked through an open groove 34 provided in the joint housing portion through the rod 33. And it is configured to be able to unlock. By making the groove an open type, assembly can be done easily and easily.

  The tractor side mounting portion of the support frame 28 has a U-shaped mounting portion 28a. However, if the mounting portion with the tractor differs depending on the model, a different shape is used in order to provide as much as possible parts sharing. This can be dealt with by welding the mounting portion 28b of FIG.

  The 2P link type rotary employed in a small tractor or the like requires more time for attaching and removing the work implement than the 3P link type rotary. When moving at a sales company or the like, a 2P link type tractor must be prepared when it is desired to move the 2P link type rotary alone.

  In this example, as shown in FIG. 6, a simple hitch 35 including upper and lower lateral engagement members 35a and 35b, left and right vertical connection members 35c and 35d, and connection holding members 35e and 35f is replaced with a 2P link type rotary 36. It can be changed to a simple 3P quick type. Thereby, it is possible to move with a more general 3P quick hitch type 37 tractor without preparing a 2P link type tractor such as during movement. The simple hitch 35 is not only hooked by the upper hook portion 37U of the 3P quick hitch 37 portion but also fixed by the left and right lower hook portions 37L and 37R.

  After the work, the rotary cover has a lot of mud adhering, and a large force is required to lift and fix the rotary cover manually during cleaning, which is difficult for elderly people and women without power. It was.

  In this example, as shown in FIG. 7, by configuring the rotary cover 38 to be lifted and lowered using a damper 39 that can be expanded and contracted by air pressure, even an elderly person can easily perform cleaning work such as mud dropping. . In the above-described rotary cover lifting / lowering control configuration, it is convenient that the lifting / lowering control switch is of a remote control type so that it can be used outside the driver's seat.

  The example of FIG. 8 shows the mounting structure of the safety valve of the cylinder case 21 for raising and lowering the tractor 3P. The safety valve safety valve 40 is arranged behind the horizontal cylinder valve 41 on the side of the main cylinder hydraulic raising and lowering cylinder 23. Thus, the cylinder case oil passage processing is simplified.

  Further, when the external hydraulic valve is mounted on the right side surface of the cylinder case 21, it is difficult to directly mount the external hydraulic valve because the mounting area on the right side surface is small. Therefore, in this example, as shown in FIG. 9, an external hydraulic valve (two stations) 43 is attached with a spacer metal 42 interposed therebetween.

  The cylinder case has different lifts depending on the size of the class, so the cylinder diameter is different. However, the bolt part attached to the rear transmission case and the mounting surface are the same so that it can be attached to the common rear transmission case. .

  The embodiment shown in FIG. 10 embodies a device (mud collector) that sets up behind a tractor or rotary work machine and picks up mud that has fallen on the road while driving on the road after tractor work in the field. It has become.

  The mud collector includes a towing unit 45, a mud collecting unit 46, and wheels 47. The towing unit 45 includes a tow hook, 45a, and a tow bar 45b, and is configured to be pulled by being hooked on an upper portion of the tractor or the work machine R. A trap body 48 for scooping up mud is provided at the tip of the mud collecting section 46 that picks up and collects mud.

  In addition, it is desirable that the width of the mud collector be set wider than the width at which the tractor drops mud after work.

8 Fuel tank 9 Refueling port 10 Lifting device 11 Receiving base 12 Lift arm 13 Suspension base 14 Helical shaft 15 Rotating handle 16 Lifting means 18 Body frame T Fueling tank

Claims (5)

  In a work vehicle provided with a fuel filler port (9) communicating with a fuel tank (8) at an upper part on the front side of the machine body, the fuel tank (T) is placed on the front part side of the machine body to place the fuel filler port (T 9) A work vehicle equipped with a lift device (10) that lifts and conveys a fuel tank (T) to the vicinity of 9).   In the lift device (10), the cradle (11) on which the fuel tank (T) is placed is located on the front side of the front of the machine body, and the suspension arm (12) of the lift arm (12) that lifts the cradle (11). 2. A work vehicle according to claim 1, wherein said work vehicle is mounted and supported on a body frame (18) on a lateral side of the machine body.   The lift device (10) includes a cradle (11) on which a fuel tank (T) is placed, and a lift arm (12) that raises and lowers the cradle. The lift arm (12) and the suspension base (13) The work vehicle according to claim 1 or 2, further comprising lifting means (16) for driving the lift arm (12) to move up and down.   The elevating means (16) includes a rotating handle (15) and a helical shaft (14), and is configured to drive the lift arm (12) up and down by rotating the rotating handle (15). The work vehicle according to claim 3.   The work vehicle according to claim 3 or 4, wherein the cradle (11) is a box-shaped container.

Images