JPH09294401A - Controlling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a controlling machine capable of easily making a turn at the edge part of a field, improving operating property, handling property and working efficiency thereof and useful a walking type mobile agricultural machine, etc., by arranging a reverse rotating device in a power transmission route between an engine and a plow working machine and projecting a tool for a reverse rotation device in front of the machine body. SOLUTION: This controlling machine mounting a plow working machine B at the rear part of a travelling wheel 25, projecting a handle 32 forward and performing the work while walking backward, is obtained by arranging a reverse rotating device on a power transmission route between an engine E and a plow working machine B and projecting a tool for a reverse rotation 42 in front of the machine body. Further, it is preferable to arrange the tool for the reverse rotation 42 at further front part of the traveling wheel 25 and joining the tool for the reverse rotation 42 with an operating clutch and a main crutch as interlocked.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a walking type mobile agricultural machine,
Mainly at the rear of the management machine, a working machine such as a rotary tiller and a ridger is installed, and the handle is turned forward to allow work to be performed backwards. Technology for making it possible to lift.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a working machine such as a rotary tiller B and a ridger C or a mulching machine is mounted on the rear part of a management machine A, and a handle 32 is turned forward. , It has been traditional to work backwards. When performing ridge raising work while cultivating with this management machine, when reaching the end of the field, the work clutch is set to "off", the handle is pushed down, the work machine is lifted around the running wheels, and the steering clutch is opened. It was turning around while cutting.

[0003]

When the handle is turned over in the forward direction and the management machine equipped with the working machine is rotated, the handle is pushed downward to lift the working machine. When the clutch is turned off,
The tilling claw of the rotary tiller penetrates into the soil, and depending on the shape of the forming plate of the ridger, it penetrates into the soil. In this state, pushing down the handle required a great deal of force and was a heavy labor task.

[0004]

The present invention uses the following means in order to solve the above problems. That is, a cultivator is attached to the rear part of the traveling wheels, a handle is projected forward, and a management machine that performs work while walking backward, with a reversing device in the power transmission path between the engine and the cultivator. The reversing operation tool is disposed in front of the machine body, and the reversing operation tool is interlocked with the steering clutch and the main clutch.

[0005]

The problems and means to be solved by the present invention are as described above, and one embodiment of the present invention shown in the accompanying drawings will be described below. 1 is a side view of a management machine adopting the present invention, FIG. 2 is a side view of a power transmission section from an engine to a transmission case, FIG. 3 is a side view of the same when reversing, FIG. 4 is an enlarged side view of the same, and FIG. Is a plan sectional view of the same.

As shown in FIG. 1, a walk-behind mobile agricultural machine is called a management machine A,
Explaining from the overall configuration of the management machine A in which the rotary type tiller B and the ridger C are installed as working machines at the rear of the machine,
An engine E is mounted on the engine frame 20, and a fuel tank 21 is mounted on top of the engine E. The output shaft 3 is projected into the transmission case 22 on the side of the engine E, the belt tension type main clutch and the reversing device of the present invention are housed in the transmission case 22, and the transmission is performed via the main clutch and the reversing device. Power is transmitted to the case 23 to change the speed.

The transmission case 23 has a chain case 33 extending downward, and an axle 24 is laterally mounted below the chain case 33, and traveling wheels 25 are axially supported by the axle 24. Further, a cultivating chain case 34 is projected from a rear portion of the mission case 23, a cultivating claw shaft 26 is horizontally installed at a lower portion of the cultivating chain case 34, and the cultivating claws 30, 30 ... Are mounted on the cultivating claw shaft 26. Radially planted. The tilling nail 3
The upper part of the rotation locus of 0 ... 30 is covered with a tilling cover 35, and constitutes a rotary tilling device B. The cultivating cover 35 is fixed to the rotary frame 27, and the rotary frame 27 has the cultivating chain case 34.
Is projected rearward from the upper part of. An attachment fixing boss 29 is provided at the rear end of the rotary frame 27, and the ridger C is attached to the attachment fixing boss 29.

On the upper part of the mission case 23, 3
A handle base 31 is provided so as to be rotatable by 60 °, and a handle 32 is placed and fixed on the handle base 31. In this embodiment, the handle 32 is provided so that an operator can work forward while facing backward. Is rotated forward and fixed. A main clutch lever 1, a steering clutch lever 2, an accelerator lever (not shown), etc. are arranged at the tip of the handle 32.

The structure of the reversing device in the transmission case 22 according to the present invention is as shown in FIGS. 2, 3, 4 and 5.
The output pulley 4 is fixedly installed on the output shaft 3 of the engine E,
On the other hand, an input pulley 7 is fixedly mounted on the input shaft 6 of the mission case 23, and as shown in FIG. 5, the output pulley 4 includes forward rotation output pulleys 4a and 4b, reverse rotation output pulley 4c, and input pulley 7. Forward rotation input pulley 7a
7b and a reverse rotation input pulley 7c, each of which is composed of three trains. A V belt 5.5 is wound between two of the forward rotation output pulleys 4a and 4b and the forward rotation input pulleys 7a and 7b, and tension is provided in the middle thereof. The pulley 9 is arranged so that power can be transmitted. The tension pulley 9
Is rotatably supported at one end of the tension arm 10,
A base end side of the tension arm 10 is rotatably supported by a pivot shaft 11, a midway portion of the tension arm 10 is connected to a wire 12 via a spring, and the other end of the wire 12 is the main clutch. It is connected to an arm 13 provided on the base side of the lever 1 (Fig. 2). The pivot shaft 11 is pivotally supported by a support pipe fixed to the body side.

A reversing tension arm 14 and an operating arm 15 are fixedly mounted on the pivot shaft 11, and a central portion of a swing arm 16 is rotatably supported by a shaft 19 at the other end of the reversing tension arm 14. The swing arm 16 is supported.
The reverse rotation tension pulleys 17, 17 are rotatably supported on both sides of the output pulley 4, and the reverse rotation tension pulleys 17, 17 are arranged below the reverse rotation output pulley 4c of the output pulley 4. On the pivot shaft 11 side of the swing arm 16, an arc-shaped elongated hole 16 centered on the shaft 19 is provided.
a is opened, and a pin 36 protruding from the reversing tension arm 14 is inserted into the elongated hole 16a to regulate the swing of the swing arm 16.

Then, the reversing tension pulley 1
The reverse rotation belt 18 is wound between the 7/17 and the reverse rotation input pulley 7c. The reverse rotation belt 18 has a hexagonal cross section as shown in FIG.
The inner side of 8 is fitted to the tension pulleys 17 for reverse rotation and the input pulley 7c for reverse rotation to transmit power, and the outer side of the belt 18 for reverse rotation is fitted into the output pulley 4c for reverse rotation of the output pulley 4 and can be driven in reverse. I am trying.

A connecting rod 37 is pivotally connected to the tip of the operating arm 15, the other end of the connecting rod 37 is pivotally connected to connecting links 38 and 39, and the other side of the connecting link 38 is connected to an arm 40. The arm 40 is fixed, and the base of the arm 40 is fixed to a shaft 41 pivotally supported by the engine frame 20.
1, a rotation pedal 42 as a reverse operation tool is fixedly installed,
Its tip extends to the front of the front of the engine frame 20 and below the handle 32.

A spring 43 interposed between the arm 40 and a body is connected to the tip of the arm 40, and a wire 44 is connected to the arm 40. The other end of the wire 44 is an arm 45 provided on the base side of the main clutch lever 1. It is connected. Also, a long hole 39a is opened at the other end of the connecting link 39, and a pin 47 projecting from one end of a bell crank arm 46 fixed to a steering clutch operating shaft 49 projecting to the side surface of the chain case 33 is provided. A wire 48 is inserted into the long hole 39a, and a wire 48 is locked to the other end of the bell crank arm 46, and the other end of the wire 48 is connected to the steering clutch lever 2.

In such a structure, when performing the ridge work, as shown in FIG. 2, the main clutch lever 1 is tilted rearward to be in the "on" state, and the wire 12 is pulled, whereby the tension is increased. When the arm 10 is rotated, the tension pulley 9 applies tension to the V belt 5, transmits the power from the output shaft 3 of the engine E to the mission case 23, and drives the rotary tiller B while traveling to drive the ridges. Perform upright work. At this time, the wire 44 is also pulled, but the arm 40 and the connecting link 3
8. Tension arm 1 for reverse rotation via operation arm 15
4 is lowered downward, and the reverse rotation belt 18 is not tensioned.

When the work is advanced to the end of the field, the main clutch lever 1 is tilted forward to put it in the "off" state, the wire 12 is extended, the tension arm 10 is rotated downward, and the V-belt 5 is moved. No tension is applied to the transmission case 23 and the power is not transmitted to the transmission case 23, and the traveling and the rotary are stopped. However, although the wire 44 is also returned, the arm 40 is pulled by the spring 43. And in order to go around from this state,
It is necessary to lower the handle 32 and lift the rotary tiller B and the ridger C, but the tiller 30 is digging into the soil, and when the cultivating plate or forming plate of the ridger C is digging into the ridge. In the past, this lifting work was a heavy labor.

According to the present invention, when the main clutch lever 1 is "disengaged" at the end of the field and then the depressing pedal 42 is depressed, the arm 40 is pivoted about the shaft 41 to pivot the connecting link 38 and the coupling. The operation arm 15 is rotated via the rod 37, the reverse rotation tension arm 14 is rotated upward, and the reverse rotation belt 18 wound around the reverse rotation tension pulley 17 is pressed against the reverse rotation output pulley 4c side. Then, the swing arm 16 swings and is pressed uniformly.
Therefore, the power is transmitted from the output pulley 4 to the reversing belt 18, and the input pulley 7 is reversed as shown in FIG. At the same time, by pulling the connecting link 39, the bell crank arm 46 is rotated and the steering clutch actuating shaft 49 is also rotated to disengage the steering clutch. Further, by pulling the wire 44,
Even when the main clutch lever 1 is not operated to the "off" side, it is forcibly turned to the "off" side.

In this way, the input pulley 7 is reversely rotated and the reverse driving force is input to the transmission case 23, so that the traveling wheels 25 are reversely rotated and try to back, but the steering clutch is disengaged. , It does not move back, and the tiller claw shaft 26 is rotated in the reverse direction, whereby the tiller claw 30 is rotated in the direction of pulling out from the soil, and further, the front part of the body is lowered by the operation of depressing the rotation pedal 42, A force for rotating the handle 32 downward is also applied, so that the handle 32 can be easily lowered and the rotary tiller B and the ridger C can be easily lifted.

[0018]

The present invention, which is configured as described above, provides the following effects. That is, as in claim 1, the reversing device is arranged in the power transmission path between the engine and the tilling implement, and the reversing device is operated by the rotation pedal protruding from the machine body to reverse the rotation. By reaching the end and stepping on the reversing operation tool when turning,
By rotating the tiller in the opposite direction, you can easily pull out the tiller that has digged into the soil.In addition to the operation of stepping on the reversing operation tool, it can be lowered to the bottom of the handle to facilitate the rotary tiller and ridger. Can be lifted to.

According to a second aspect of the present invention, a reverse rotation device for reverse rotation is arranged in the power transmission path, the reverse rotation operation tool is arranged in front of the running wheels, and the reverse rotation operation tool is interlocked with the steering clutch and the main clutch. Therefore, it becomes possible to operate the steering wheel operation and the reverse rotation operation tool while moving backward, and the steering clutch and the main clutch can be turned off by operating the reverse rotation operation tool, and the rotary tiller and the ridger can be turned. When lifting the machine, you can operate it in a stable posture without traveling.

[Brief description of drawings]

FIG. 1 is a side view of a management machine adopting the present invention.

FIG. 2 is a side view of a power transmission unit from the engine to the transmission case.

FIG. 3 is a side view of the same in reverse rotation.

FIG. 4 is an enlarged side view of the same.

FIG. 5 is a plan sectional view of the same.

FIG. 6 is a side view showing a conventional state during turning.

[Explanation of symbols]

 A management machine B rotary tiller 4 output pulley 4c reverse rotation pulley 7 input pulley 17 reverse rotation tension pulley 18 reverse rotation belt 22 transmission case 23 mission case 25 running wheel 32 handle 42 traveling pedal

Claims (2)

[Claims] 1. A management machine in which a tilling implement is mounted on a rear portion of a traveling wheel, a handle is projected forward, and a worker walks backward to perform work, and a power transmission path between an engine and the tiller is provided. A management machine characterized by having a reversing device installed and protruding a reversing operation tool in front of the machine. 2. A management machine in which a tilling implement is mounted on a rear portion of a traveling wheel, a handle is projected forward, and work is performed while walking backward, which is provided in a power transmission path between an engine and the tiller. A management machine characterized in that a reversing device is arranged, a reversing operation tool of the reversing device is arranged in front of a traveling wheel, and the reversing operation tool is interlocked with a steering clutch and a main clutch.