JPS6251192B2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to vehicles such as tractors.

(Prior art) For example, in a tractor, a steering handle and a
The driving system gear shift lever and the seat are in the above order,
Generally, they are arranged in a so-called series toward the rear and are operated in the above-mentioned driving position.

(Problems to be Solved by the Invention) Recently, there has been a demand for tractors to be able to be operated not only in a forward driving position but also in a backward driving position so that they can handle a wide variety of tasks. .

Therefore, it is conceivable to configure the tractor so that it can be operated in either a forward driving position or a backward driving position, but in this case, how can the structure be simplified and the work when changing the driving position be made easy? The question is whether to make it a reality.

An object of the present invention is to provide a vehicle such as a tractor that can solve the above problems.

(Means for Solving the Problems) In order to solve the above problems, the present invention employs a bonnet arranged at the front of the vehicle body to cover the engine, a pair of left and right rear wheel fenders, and a pair of left and right rear wheel fenders. It is equipped with a floor seat that connects the wheel fender,
A seat attachment part for forward-facing driving is provided on the floor seat, located between the rear wheel fenders, and a seat attachment part for rearward-facing driving is provided on the vehicle body, located on the upper side of the rear of the bonnet. The seat is selectively detachable at the mounting part, and the vehicle body has a handle mounting part for forward driving located corresponding to the rear side of the bonnet, and a handle for rearward driving located between the rear wheel fenders. A handle device is selectively and detachably provided on both handle device attachment portions, the rear side of the bonnet is connected to one rear wheel fender, and both seat attachment portions are connected to this connection portion. An operating lever located on the side of the intermediate position of the seat is provided in a manner that projects upward from the top surface of the connection part, and instruments are provided on the top surface of the connection part that is located on the side of the intermediate position of both seat attachment parts. At the point.

(Function) When the vehicle is placed in a forward driving position, the seat is provided at the seat mounting portion for forward driving, and the handle device is provided at the handle device mounting portion for forward driving.

Further, when the vehicle is placed in a backward driving position, the seat is provided at the seat attachment portion for rearward driving, and the handle device is provided at the handle device attachment portion for rearward driving, respectively.

(Embodiment) An embodiment in which the present invention is applied to a vehicle such as a tractor will be described below with reference to the drawings. Reference numeral 1 denotes a tractor body, and the vehicle body 1 is composed of an engine 2, a transmission case 3, etc. . On the front side of the engine 2 is a radiator 5 equipped with a fan 4.
Fuel tanks 9 are provided on the rear side.

Reference numeral 6 denotes a bonnet, which includes a bonnet main body 41 constituting the main part of the bonnet 6, and a bonnet main body 4.
1 and a cover 8 that closes the rear end opening of 1. The bonnet body 41 covers the front side of the engine 2, the radiator 5, and the fuel tank 9, and the cover 8 covers the rear side of the fuel tank 9.

A pair of dustproof nets 7 which also serve as safety covers are removably provided on both sides of the rear side of the bonnet 6, and as shown by the arrows in FIG. Cooling air is taken in, and after cooling the radiator 5, the cooling air is discharged from the front side of the bonnet 6. Therefore, straw, dry grass, etc. will not get caught in the dustproof net 7 and reach the radiator 5, and the engine cooling function of the radiator 5 will not be degraded. In addition, since the dustproof net 7 is placed outside the tractor, it is easy to clean the dustproof net 7, and the cooling air that has become high temperature after cooling the radiator 5 is transferred to the center of the tractor or the rear side of the tractor. It will never reach the level of the driver who does.

10 and 11 are the front and rear wheels for a pair of left and right wheels,
Reference numeral 12 denotes a pair of left and right steps fixedly installed in the middle of the vehicle body 1 in the longitudinal direction.

At the rear of the vehicle body 1, a hydraulic system 14 for lifting and lowering the work machine is mounted, which has a pair of left and right lift arms 13, and a three-point link mechanism 17 consisting of a top link 15 in the center and a pair of left and right lower links 16.
is equipped with. A working device 18, such as a blade, is attached to the three-point link mechanism 17.

A floor seat 19 connects the left and right rear wheel fenders 20 and includes a hydraulic system 14 therein.

Both rear wheel fenders 2 are mounted on the underside of the floor seat 19.
A rear holder 22 shown as a seat attachment part for forward driving located between 0 and 3 is provided, and a front holder 21 shown as a seat attachment part for rearward driving is provided on the lower surface of the cover 8 or the fuel tank 9. It is being

The insertion holes 21 of these holders 21 and 22
By removably inserting pins 24 fixed to the lower surface of the seat 23 into the holders 21 and 22a, the seat 23 can be selectively attached to and detached from the holders 21 and 22 so as to face forward or backward.

By the way, the right (or left) rear wheel fender 20 and the cover 8 are connected and integrated, and the right side between the cover 8 and the floor sheet 19 is closed by this connection part 42, and the tractor is You can only get on and off from the left side.

The connecting portion 42 includes an instrument panel 25 and an operating lever 26 located on the side of the intermediate position between both the holders 21 and 22.
It is equipped with the equipment necessary for the operation of the group, etc.

The instrument panel 25 is provided on the upper surface of the connecting portion 42, and the instrument panel 25 is provided with the minimum number of instruments 27 required during operation, such as a speedometer and a fuel gauge. Note that the remaining instruments 28 are provided on the instrument panel 29 provided on the cover 8 as in the conventional case, but the instrument panel 29 on the left rear wheel fender 20 is
All the instruments may be arranged centrally at 5.

The group of operating levers 26 protrudes upward from the upper surface of the connecting portion 42, and is composed of the minimum operating levers required by the driver, such as various speed change levers and accelerator levers for the travel system and PTO system. .
The remaining operating levers are arranged on the vehicle body 1 in the same manner as before, but the operating lever 26 is
The group may be made up of all the operating levers etc. provided on the vehicle body 1.

Next, if I explain the steering relationship,
Reference numerals 30 and 31 denote a pair of front and rear gearboxes, and the front gearbox 30 is fixedly installed on the transmission case 3 below the fuel tank 9. The front gearbox 30 is equipped with a pitman arm 32 connected to an interlocking mechanism within the box 30, and the arm 32 steers the front wheels 10 via a drag link 33, a steering arm 34, a tie rod 35, etc. Ru. The rear gearbox 31 is fixedly installed on the transmission case 3 below the floor seat 19.
The interlocking mechanism inside the box 31 is connected to the interlocking mechanism inside the front gearbox 30 via an interlocking shaft inside the cover cylinder 36.

The front gearbox 30 and the interlocking mechanism therein constitute a handle device attachment section for forward driving, which is located below the seat 23 on the front holder 21. Further, the rear gearbox 31 and the interlocking mechanism therein constitute a handle device mounting portion for backward driving, which is located below the seat 23 on the rear holder 22.

37 is the handle post, each gearbox 3
The post 37 is rotatably provided with a handle shaft with a handle 38 attached thereto, and the post 37 is attached to each gear box 30, 31 in a backward or forward tilted manner. When installed, the handle shaft is attached to each gear box 3.
It is configured to be connected to the interlocking mechanism in 0,31. The handle post 37, the handle 38, and the handle shaft constitute a handle device.

Note that the cover 8 and the floor sheet 19 are formed with cutouts and the like for attaching the handle post 37 to each gearbox 30 and 31.

According to the embodiment configured as described above, when the driver operates the tractor in a forward driving position and performs work, etc., the driver performs forward driving as shown by the solid line in FIGS. 1 and 2. The seat 23 is mounted forward on the upper side of the floor seat 19 via the rear holder 22, which serves as a seat attachment part for the handlebar post 37.
is attached to the front gear box 30 of the handle device attachment part for forward driving, and the interlocking mechanism in the box 30 and the handle shaft are interlocked.

As a result, the driver who is in the forward driving position on the seat 23 can move the instrument panel 2 on the connecting part 42 and the cover 8.
While checking the gauges 27 and 28 of 5 and 29, press the steering wheel 38 and the operating lever 26 on the side of the seat 23.
By operating the tractor in the same manner as before, the tractor can be operated safely and efficiently.

Next, when the three-point linkage mechanism 17 is equipped with a work implement 18 such as a blade, and the driver drives the tractor in a backward driving position to perform work, etc., the imaginary line in FIGS. As shown in , the seat 23 is provided rearward on the upper side of the cover 8 via the front holder 21 which is a seat attachment part for rearward driving, and the handle post 37 is attached to the handle device for rearward driving. It is attached to the rear gear box 31 of the attachment part, and the interlocking mechanism in the box 31 and the handle shaft are interlocked.

As a result, the driver who is in the rearward driving position on the seat 23 can operate the steering wheel 38 and the operating lever 26 on the side of the seat 23 while checking the instruments 27 on the instrument panel 25 on the connecting part 42. Therefore, the tractor can be operated safely and favorably while fully confirming the work situation, and the work can be performed easily.

(Effects of the Invention) According to the present invention, a seat mounting portion for forward driving located between both rear wheel fenders is provided on the floor seat, and a seat mounting portion for backward driving located on the upper side of the rear part of the bonnet is provided on the vehicle body. The vehicle body is equipped with a seat mounting section for forward driving, and a seat is selectively attached and detached on both seat mounting sections, and a handle device mounting section for forward driving located on the vehicle body corresponds to the rear side of the bonnet, and a seat mounting section for both rear wheels is provided on the vehicle body. A handle device mounting portion for rearward driving is located between the fenders, and both handle device mounting portions are selectively and detachably provided with handle devices, and the rear side of the bonnet and one rear wheel fender are connected. This connecting part is provided with an operating lever located on the side of the intermediate position of both seat attaching parts and protruding upward from the upper surface of the connecting part. Since instruments are installed on the side, you can easily change the position of the tractor between a forward driving position and a rearward driving position by simply changing the mounting position of the seat and handle system. etc., only one set is required, and the structure is simple.

In addition, the seat attachment part for rearward driving is located on the upper side of the bonnet, and when driving backwards, the seat is in a high position, so even if there are left and right rear wheel fenders, it will not work when driving backwards. Sufficient visibility is ensured, making it easy and reliable to check the work status.

Further, the connecting portion that connects the rear side of the bonnet and the rear wheel fender on one side is provided with an operating lever located on the side at an intermediate position between the two seat mounting portions and protruding upward from the upper surface of the connecting portion. on the top of the section.
Since the instruments are located on the side of the intermediate position between the seat attachment parts, it is easy to operate the operating levers and visually check the instruments both when driving forward and when driving backwards. protrudes upward from the top surface of the connecting portion, so the driver's foot space will not become narrow during each drive.

Furthermore, since the position of the operating lever and instruments is not changed when changing the driving position, the mechanism that interlocks with the operating lever and the wiring of the instruments can be simplified.

Furthermore, since the rear side of the bonnet and the rear wheel fender on one side are connected, their strength can also be improved.

The present invention has the above advantages and is of great practical benefit.

[Brief explanation of the drawing]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a plan view of the same. 1... Tractor body, 6... Bonnet, 19
...Floor seat, 20...Rear wheel fender, 21
...Front holder (seat mounting part for rearward driving), 2
2...Rear holder (seat attachment part for forward-facing driving),
23... Seat, 30, 31... Front/rear gearbox, 37... Handle post, 38... Handle.

Claims (1)

[Claims] 1. A bonnet placed at the front of the vehicle body to cover the engine, a pair of left and right rear wheel fenders, and a floor sheet that connects the two rear wheel fenders, and is located on the floor sheet between the two rear wheel fenders. A seat attachment part for forward-facing driving is provided, a seat attachment part for rearward-facing driving is provided on the vehicle body, which is located on the upper side of the rear part of the bonnet, and a seat is provided in both seat attachment parts in a selectively detachable manner. , the vehicle body is provided with a handle device mounting portion for forward driving located corresponding to the rear side of the hood, and a handle device mounting portion for backward driving located between both rear wheel fenders, and both handle device mounting portions are provided. A handle device is selectively detachable, the rear side of the bonnet is connected to the rear wheel fender on one side, and an operating lever located on the side of the intermediate position between the seat attachment portions is connected to this connection portion. 1. A vehicle such as a tractor, characterized in that instruments are provided in an upwardly protruding manner from an upper surface of a connecting portion and are located on the upper surface of the connecting portion at a side of an intermediate position between both seat attachment portions.