JPH0674456U - Mounting structure of work machine lifting operation part in agricultural tractor - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a structure for mounting an elevator lifting operation unit in an agricultural tractor in which a rotary operation unit for lifting and lowering a working machine and adjusting a depth is integrally provided in a driver's seat. [Constitution] In the present invention, a working machine such as a tilling rotary (2) is interlockingly connected to the rear part, and a working machine lifting operation section (9) is provided near the driver's seat (5) of the machine body (1). Lifting operation section
In the agricultural tractor in which a position lever (17) for adjusting the plowing depth is provided in (9),
(9) is arranged integrally with the driver's seat (5), and the mounting position of the working machine lifting operation section (9) can be changed with respect to the driver's seat (5).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure of an elevator lifting / lowering operation unit in an agricultural tractor in which a rotary operation unit for lifting / lowering a working machine and adjusting a depth is integrally arranged in a driver's seat.

[0002]

[Prior art]

 Conventionally, in agricultural tractors, a working machine such as a tilling rotary is connected, and power is taken out by a PTO shaft to drive the tilling rotary.

Further, in order to perform the raising / lowering operation of the above-mentioned tilling rotary and the adjustment of the tilling depth, an operating machine raising / lowering operation portion is arranged on the machine body side.

As shown in FIGS. 5 and 6, the working machine lifting / lowering operation unit 50 normally includes a vertical lifting / lowering switch 56 for lifting and lowering the tilling rotary, and a position lever 57 for adjusting the tilling depth of the tilling rotary. In general, the driver's seat 55 is arranged in parallel with the driver's seat 55 at a position where the driver can easily operate it, for example, on the right side of the driver's seat 55, such as the right-side fan 59.

Then, the operator performs a work by selecting a desired plowing depth while sliding the position lever 57 in the front-back direction with the right hand. 5 and 6, reference numeral 58 is a safety frame.

[0006]

[Problems to be solved by the device]

 However, in the above-mentioned attachment structure of the working machine lifting operation unit in the agricultural tractor, the following problems to be solved still remain.

That is, the position lever 57 is provided with a multi-step depth switching position so that the depth of the tilling rotary can be finely adjusted, and the lever 57 slides from the shallowest side 50a to the deepest side 50b. The quantity L is often large.

Therefore, when operating in a shallow direction, the driver had to twist his arm, which made it very difficult to operate.

In particular, there is a problem that the operation may not be in time when it is desired to set the tilling rotary shallowly during work at high speed operation.

In addition, in recent years, in agricultural tractors (especially in large machines), it is general that the driver's seat 55 can be shifted back and forth according to the physique of the operator (driver). 5 and 6, depending on the position, the driver's arm may contact the backrest 55b of the driver's seat 55 or the safety frame 51 when the position lever 57 is operated. This makes the above problems more prominent.

An object of the present invention is to provide a mounting structure for a working machine raising / lowering operation unit in an agricultural tractor that can solve the above problems.

[0012]

[Means for Solving Problems]

 According to the present invention, a working machine such as a tilling rotary is interlockedly connected to the rear part, a working machine lifting operation section is provided in the vicinity of the operating seat of the machine body, and a position lever for adjusting the tilling depth is arranged in the working machine lifting operation section. In the installed agricultural tractor, the working machine lifting operation section is arranged integrally with the driver's seat, and the mounting position of the working machine lifting operation section can be changed with respect to the driver's seat. The purpose of the invention is to provide a mounting structure for the work machine lifting / lowering operation section of an agricultural tractor.

[0013]

【Example】

Hereinafter _, embodiments of the present invention will be specifically described with reference to _the drawings.

FIG. 1 is an overall side view of an agricultural tractor having a working machine lifting / lowering operation section according to the present invention, FIG. 2 is an explanatory view showing the same part, and FIG. 3 shows a structure for mounting the working machine lifting / lowering section. It is an explanatory diagram shown.

As shown in FIG. 1, an agricultural tractor A according to the present embodiment has a rear part of a machine body 1 and a tilling rotary 2 as a working machine, which are interlocked with each other.

An engine 3 is mounted on the front part of the machine body 1, and the engine 3 is covered with a hood 4.

A driver's seat 5 is provided at the rear of the machine body 1, and is attached to the machine body 1 via a slide mechanism 18 as shown in FIG.

Further, in front of the driver's seat 5, there is provided a dashboard 6 connected to the rear part of the hood 4, and a steering handle 7 is arranged on the dashboard 6.

Further, on the right side of the driver's seat 5, a main gear shift lever 8 and a working machine lifting operation section 9 are arranged in parallel.

In the present embodiment, as shown in FIG. 2, the working machine lifting / lowering operation unit 9 includes a vertically moving up / down switch 16 for vertically moving the tilling rotary 2 and a position lever 17 for adjusting the tilling depth in a casing 9a. It is arranged in the.

The casing 9a is attached to the right side of the driver's seat 5 via a casing mounting stay 23, which will be described later, and has a hole 19 for an up / down lifting switch on the front side of the casing 9a and a front / rear side on the outside of the switch 16. An elongated slide groove 20 is provided.

Then, the vertical lift switch 16 is attached to the hole 19, and the position lever 17 is provided in the slide groove 20 so as to project.

The position lever 17 is slidable from the shallowest side 20a regulated by the slide groove 20 to the deepest side 20b, and can be arbitrarily operated by the driver. In addition, the type is shorter than before and has a reduced operating force.

Further, an accelerator lever 10 for the hand is provided under the steering handle 7, and a clutch pedal 12 and left and right brake pedals 13, 13 are provided on the step 11.

In FIG. 1, 14 is a front wheel for driving, 15 is a rear wheel for driving, 35 is a right rear fender, and f is a safety frame (with a sun visor).

The agricultural tractor A according to the present embodiment is configured as described above, and the driver sits on the driver's seat 5 while driving and operates the work implement lifting operation unit 9 to cultivate the field. It is possible to perform 耘 work etc.

The gist of the present invention is that, in addition to the basic configuration described above, the working machine lifting operation section 9 is disposed integrally with the driver's seat 5, and the working machine lifting operation section 9 is attached. The position can be changed with respect to the driver's seat 5.

Here, the mounting structure of the working machine lifting operation section 9 will be described below.

In FIG. 3, reference numeral 24 denotes an operation portion mounting stay, which is formed in an L-shaped cross section, and is provided between the seat portion 5 a of the driver seat 5, the right side rail 32 of the slide mechanism 18, and the driver seat bracket 33. It is sandwiched (see Fig. 2).

A pair of mounting elongated holes 25, 25 are formed in the rising portion 24a of the operating portion mounting stay 24, and fixing holes 26, 26 are formed in the bottom portion 24b.

The mounting long holes 25, 25 are formed obliquely with the front side facing upward and the rear side facing downward.

The casing 9a of the working machine lifting operation unit 9 is provided with a pair of mounting bolts 27, 27 on the side surface on the driver's seat 5 side, and the mounting bolts 27, 27 are provided on the casing mounting stay 23. It is designed so that it can be inserted into the mounting position adjustment slots 28, 28.

By the way, the mounting position adjusting elongated holes 28, 28 are formed in a shape and at a position corresponding to the mounting elongated holes 25, 25 of the operation portion mounting stay 24, and the pair of casing 9a are formed. By inserting the mounting bolts 27, 27 of these into the mounting position adjusting long holes 28, 28 and the mounting long holes 25, 25 and fixing them with nuts 29, the working machine elevating part 9 is integrated with the driver's seat 5. You will be able to do it.

Therefore, for example, even if the driver's seat 5 is slid to the desired position in the front-rear direction, the working machine elevating part 9 moves together with the driver's seat 5, so that the driver's hand and the working machine The relative positional relationship between the traveling unit 9 (the vertical lifting switch 16 and the position lever 17) does not change, and the operability is significantly improved.

Further, as shown in FIGS. 2 and 3, an armrest portion 30 is provided on the upper portion of the casing mounting stay 23.

Therefore, the driver (worker) can operate the up / down lift switch 16 and the position lever 17 in a natural and comfortable posture while placing his right hand on the armrest portion 30.

When the working implement operating portion 9 of this embodiment is used for an existing agricultural tractor, and if an armrest is already set, the armrest portion 30 is cut to remove the existing armrest. Can also be used.

Further, the casing 9a of the working machine operation portion 9 is attached to the pair of attachment position adjusting elongated holes 28, 28 and the attaching elongated holes 25, 25 provided in the casing attaching stay 23 and the operating portion attaching stay 24, respectively. Since the bolts 27, 27 are inserted and fastened with the nut 29 for fixing, the position of the casing 9a can be appropriately changed by loosening the nut 29 according to the physique of the driver.

That is, since the mounting long holes 25, 25 and the mounting position adjusting long holes 28, 28 are formed with the front side facing upward and the rear side facing downward, the casing 9a is positioned in front. When moved in the direction, the casing 9a (working machine operation part 9) is located above the original position, and when moved backward, it is located below.

With the above-described configuration, a driver of any physique can move up and down the work machine at a position commensurate with the physique and comfortably with his / her hand on the armrest 30. The portion 9 can be operated, the operability can be improved, and the driver's fatigue can be reduced.

In particular, in the scratching work, which is a work in which the position lever 17 is always held in the hand, an unnatural posture is not forced, and the operating force can be transmitted to the position lever 17 without waste. Therefore, the work efficiency can be remarkably improved.

In FIG. 3, reference numeral 22 is a driver's seat slide lever, 31 is a left rail, 34 is a driver's seat lower cover, and 37 is a hinge pin, and together with the right rail 32 and the driver's bracket 33, the driver's seat 5 The slide mechanism 18 is configured to allow the slide in the front-back direction.

As another embodiment, the one shown in FIG. 4 will be described. This is provided with a microcomputer-controlled one-touch lifting switch S instead of the vertical lifting switch 16 provided in the working machine operating section 9 in the previous embodiment.

In this case, as shown in FIG. 4, only the position lever 17 is arranged in the previous casing 9a, and the one-touch lift switch S instead of the up / down lift switch 16 is a microcomputer for controlling the operation of the tiller rotary 2. It is installed in the microcomputer controller C that is automatically operated by and is installed in the right rear fender 35.

The right rear fender 35, which is the installation location, is located at a position where it is easy for the driver to operate, and the driver's hand can be operated smoothly and can be operated smoothly.

Note that, for example, in an agricultural tractor with a cabin, it may be arranged inside the cabin of the cabin support.

[0047]

[Effect of device]

 In the present invention, the working machine lifting operation unit is arranged integrally with the driver's seat, and the mounting position of the operating unit can be changed relative to the driver's seat, so that the driver's seat can be moved back and forth to a desired position. Even if it is slid in the same direction, the work implement lift section moves together with the driver's seat, so the relative positional relationship between the driver's hand and the work implement travel section does not change, and operability is improved. Remarkably improved.

In addition, since a driver of any physique can change the work implement operating unit to a position corresponding to the physique, the operator can operate the work implement raising / lowering unit with his / her hand resting on the armrest. Therefore, it is possible to improve operability and reduce driver fatigue.

In particular, in a scratching work or the like in which the position lever is always held in hand, an unreasonable posture is not forced, and moreover the operating force can be transmitted to the position lever without waste. Therefore, the work efficiency can be remarkably improved.

[Brief description of drawings]

FIG. 1 is an overall side view of an agricultural tractor including a working machine lifting operation unit according to the present invention.

FIG. 2 is an explanatory diagram showing the same main part.

FIG. 3 is an explanatory view showing a mounting structure of a working machine lifting operation unit.

FIG. 4 is an explanatory diagram showing another embodiment.

FIG. 5 is an explanatory diagram showing an example of an operation state of a conventional work machine operation unit.

FIG. 6 is an explanatory diagram showing an example of an operation state of a conventional work machine operation unit.

[Explanation of symbols]

 1 Airframe 2 Tillage rotary 5 Driver's seat 9 Work implement operation part 17 Position lever

Claims (1)

[Scope of utility model registration request] 1. A work implement such as a tilling rotary (2) is interlockingly connected to the rear part, and a work implement lifting operation section (9) is provided near the driver's seat (5) of the fuselage (1) to raise and lower the work implement. In an agricultural tractor in which a position lever (17) for adjusting the plowing depth is arranged in the section (9), the working machine lifting operation section (9) is arranged integrally with the driver's seat (5) and The mounting structure of the working machine lifting operation unit in an agricultural tractor, wherein the mounting position of the working machine lifting operation unit (9) can be changed with respect to the driver's seat (5).