JP2003047305A - Foldable agricultural implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a part of an implement extended to both left and right sides foldable relatively to the central part in the longitudinal direction of the agricultural implement having the long left and right directions. SOLUTION: This agricultural implement 1 is equipped with shield covers 15, aprons 16 and levelers 17 on the outer peripheries of rotary operating parts 13. Each apron 16a and each leveler 17a in the implement parts can be rotated in a shield cover site to an operating position and a folded position relatively to the apron 16 and leveler 17 in the central part without using a connecting member. A leveler angle regulating mechanism 21 capable of regulating the supporting angle of the leveler 17a is installed between the shield cover site and the leveler 17a. The leveler angle regulating mechanism 21 is a connecting rod capable of regulating the length. The levers 17a and 17 are provided with a recessed part 23 and a protruding part 22 fitting and releasing the fitting at mutually opposite ends of the leveler 17 in the central part and the leveler 17a in the implement part. The agricultural implement 1 is equipped with apron fixing devices 20 and 20a fixing the implement part when the implement part is kept in an operating state and releasing the connection when the implement part is folded in mutual opposite positions of an inner end of the apron 16a in the implement part and the outer end of the apron 16 in the central part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to fold a working machine portion extending on both left and right sides with respect to a central portion in the longitudinal direction of an agricultural working machine such as a rotary scraping working machine having a long horizontal direction. Regarding the farm work machine.

[0002]

2. Description of the Related Art Conventionally, a longitudinal center portion of an agricultural working machine is mounted on a rear portion of a tractor via a connecting device so as to be vertically movable, and power is transmitted from the tractor to the central portion of the agricultural working machine, and at the same time, to the central portion. On the other hand, there is known an agricultural working machine such as a rotary scraping working machine in which working machine parts extending from the central part to the left and right sides are respectively foldable to the central part side.

In the rotary scraping work machine, a shield cover, an apron and a leveler are provided on the outer periphery of the rotary working part, and the left and right scraping work parts are pivotally supported at the shield cover part with respect to the center scraping work part. It is rotatably supported between a working position and a folding position via a member. Further, there is one in which both the left and right ends of the central leveler and the inner ends of the left and right sides are connected via a hinge so that the leveler can be rotated between a working position and a folding position. When the left and right scraping work parts are folded to the center scraping work part side, since the leveler in the center part and the left and right levelers are connected by a hinge, the left and right scraping work parts are folded to scrape the center part. When the work is performed only by the working unit, the leveler is in a fixed state without operating (rotating), and the desired leveling work cannot be performed. In addition, the height of the central leveler and the left and right levelers may not match due to the processing accuracy and assembly accuracy of the parts that make up the scraping work machine, and a level difference is likely to occur between adjacent levelers during work. When a concave portion and a convex portion for connection are provided between the levelers at the time of working, it is difficult to fit the concave portion and the convex portion.

[0004]

SUMMARY OF THE INVENTION As described above, in the conventional rotary scraping working machine, when working in a narrow field,
When the tractor and the working machine leave the field after the work is finished, when the left and right scraping work parts are folded to the center scraping work part side, the leveler in the center part and the left and right levelers are connected by a hinge. Therefore, the leveler will not rotate up and down, the work traces by the center scraping work unit will not be even, and if the height of the center leveler and the left and right levelers do not match, When there is a step between the adjacent levelers at the time of work, and further, if a concave portion and a convex portion for connection are provided between the adjacent levelers,
There is a problem that it is difficult to fit the concave portion and the convex portion.

The present invention allows the apron and the leveler to operate (rotate) independently even when the left and right working machine parts are folded to the central part side, which enables work in a narrow field, and the left and right work. The height of adjacent levelers can be easily adjusted when the machine part is deployed to the working state.Furthermore, when the left and right work machine parts are deployed to the working state, the adjacent aprons and levelers are interconnected, and the center An object of the present invention is to provide a folding agricultural working machine in which the working machine part and the left and right working machine parts are operated in synchronization with each other to improve working accuracy.

[0006]

In order to achieve the above object, the present invention has the following features. A. The lengthwise central portion of the agricultural work machine is attached to the rear part of the tractor via a connecting device so as to be able to move up and down, and power is transmitted from the tractor to the central portion of the agricultural work machine, while the central portion is left and right from the central portion. A work machine portion extending to both sides, which is an agricultural work machine that can be folded toward the central portion side, respectively, wherein the farm work machine is provided with a shield cover, an apron and a leveler on the outer periphery of the rotary working unit, and the apron and the leveler are , The apron and leveler of the working machine part can be rotated between the shield cover part and the working position and the folding position without using a connecting member with respect to the central part of the apron and leveler, and between the shield cover part and the leveler. , A leveler angle adjusting mechanism that can adjust the support angle of the leveler is provided.

B. The leveler angle adjusting mechanism is a connecting rod whose length is adjustable. C. The leveler is provided at the opposite ends of the leveler in the central portion and the leveler in the working machine portion, which are fitted when the leveler is in the working position, and are provided with recesses and protrusions that release the fitting when in the folding position. It was D. At the opposite position of the inner end of the apron of the working machine part and the outer end of the apron of the central part, when the working machine part is in the working state, they are connected and fixed to each other, and when the working machine part is folded, the connection is made. An apron fixing device was provided to release and release the fixation.

[0008]

[Operation] The above A. ~ D. The folding agricultural working machine according to the present invention has a configuration in which the central part and the left and right working machine parts are all worked according to the size and shape of the field, and the left and right working machine parts are folded with respect to the central part to form the central part. It is possible to select a mode in which only the part is used or a mode in which one of the left and right work machine parts is folded with respect to the center part and work is performed in either the center part or the left and right work machine parts. Further, when the left and right working machine parts are deployed to the working state, the height of adjacent levelers can be easily adjusted by the leveler angle adjusting mechanism (connecting rod whose length can be adjusted). Further, when the left and right working machine parts are unfolded into a working state, the adjacent apron and leveler are connected to each other by the concave and convex parts and the apron fixing device, and the central working machine part and the left and right working machine parts are connected. To work in synchronization with each other to improve work accuracy.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 3, reference numeral 1 is a substitute harrow having a long length in the left-right direction and having a function of crushing and scraping. A lower link connecting portion 2 and a top mast 3, which are connected to a well-known three-point link hitch mechanism including a top link and a lower link of a tractor (not shown), are provided at the central portion of the front part of the substitute harrow 1. The scratch harrow 1 is mounted on the rear part of the tractor so as to be able to move up and down. Further, power is transmitted from the PTO shaft of the tractor to the speed change gear box 4 provided in the central portion on the front side of the substitute scratch halo 1 via the universal joint, the transmission shaft, etc., via the input shaft 4a.

The substitute harrow 1 includes a central portion 5 having a working width slightly wider than the tractor tire spacing and left and right working machine portions 6.
L and 6R are divided into three parts, and the left and right end portions of the central portion 5 and the inner end portions of the left and right working machine portions 6L and 6R are provided with a rotary shaft (rotational fulcrum) 7, which is provided in a shield cover portion described later. 7
Thus, the rear surface of the central portion 5 and the rear surfaces of the left and right working machine portions 6L and 6R are overlapped with each other so that they can be folded. Therefore, the central portion 5 has a width capable of erasing the wheel mark attached to the field by the tire of the tractor. As shown in FIG. 1, the lengths of the left and right work machine portions 6L and 6R are approximately half the length of the central portion 5. The work machine parts 6L and 6R are bilaterally symmetric and have substantially the same configuration.

On the left and right sides of the gear box 4, transmission frames 8 and 8a, which also serve as a main body frame and have a transmission shaft, are provided. Chain transmission cases 9, 10 and 10 are vertically provided at the work machine portion 6L side of the transmission frame 8 and the outer ends of the transmission frames 8a and 8a, respectively. Further, side plates 11, 12, 12 are vertically provided at outer ends of the power transmission frame 8 on the side of the working machine portion 6R and inner ends of the working machine portions 6L, 6R. Between the chain transmission case 9 and the side plate 11, and between the chain transmission cases 10 and 10 and the lower end portions of the side plates 12 and 12, crushed and scraped rotors (rotary working units) 13 and 13a are axially mounted.

A clutch 14 is provided at the end portion where the central portion 5 of the transmission shaft mounted in the transmission frames 8 and 8a and the transmission shaft of the working machine portions 6L and 6R face each other. As shown in FIGS. 1 and 2, the clutch 14 is in a connected state when the left and right work machine portions 6L (or 6R) are deployed in the working state with respect to the central portion 5, and as shown in FIG. Machine part 6L (or 6R)
Is rotated about the rotation shaft 7 and folded on the central portion 5 so that it is cut. The upper portions of the crushed soil / scraping rotors 13 and 13a are covered with shield covers 15 and 15a supported by the body frame. The shield covers 15 and 15a have rear end portions and rear end portions provided with levelers 1.
Apron 1 in which 7, 17a is pivotally supported by a pivot 17b
The upper ends of 6, 16a are pivotally attached in a vertically rotatable manner via a pivot shaft 16b.

An apron angle adjusting device 18 with a handle for adjusting the support angle of the apron 16 is interposed between the shield cover 15 portion and both end portions of the apron 16. Further, a fixed rod 19 for keeping the support angle of the leveler 17 constant is interposed between the shield cover 15 part and the leveler 17. As shown in FIGS. 4 to 6, an apron fixing rod 20 and a fixing hole 20a are provided to face each other at both ends of the apron 16 and inner ends of the left and right aprons. The apron fixing rod 20 is axially pressed by a spring, and when the apron 16 is in a working state, it is inserted into the fixing hole 20a to fix both aprons 16 and 16a, and when the apron 16 is folded, the fixation is released. To be done.

Further, the shield cover 15 portion and the leveler 1
7a, a length adjusting screw 21a as a leveler angle adjusting mechanism capable of adjusting the support angle of the leveler 17a.
A connecting rod 21 whose length can be adjusted is interposed. In addition, the levelers 17 and 17a are fitted to their opposite ends when the levelers 17a are in the working position to fix both levelers 17 and 17a.
The concave portion 23 and the convex portion 22 are provided so that the fitting is released when a is in the folded position. Also, the levelers 17 and 1
7a is displaceable between a leveling position for performing normal leveling work and a soil leveling position for scraping soil. Furthermore, an extension leveler may be provided at the outer end of the leveler 17a so that it can be erected.

In the substitute harrow 1 having such a structure, as shown in FIGS. 1 and 2, the central portion 5 and the left and right working machine portions 6L and 6R are all operated, as shown in FIG. , Left and right work machine parts 6L, 6R with respect to the central part 5
Folding and working only in the central part 5, the working part 6R on the right side of the central part 5 is folded and the central part 5 is folded.
And the left working machine portion 6L, the left working machine portion 6L is folded with respect to the central portion 5, and the central portion 5 and the right working machine portion 6R work.
Select and implement according to the size and shape of the field. When the skid harrow 1 is mounted on a tractor and travels on the road, or is stored in a warehouse, the left and right work machine parts 6L and 6R are folded.

When working in a narrow field, the left and right working machine parts 6L and 6R are folded with respect to the central part 5 so that only the central part 5 is worked, or one working machine part 6L or 6R is folded and the central part 5 is folded. By working together, the leveler 17 can freely rotate up and down together with the apron 16, and good crushing and leveling work can be performed. Further, when the work is completed and the tractor and the working machine 1 leave the field, the wheel marks of the tractor are erased by the central portion 5. Furthermore, the apron 16 and the leveler 17 in the central part
And apron 16a and leveler 17a on the left and right working machine parts
Is fixed by the apron fixing rod 20 and the fixing hole 20a and the concave portion 23 and the convex portion 22, so that the working machine portions 6L and 6R work in conjunction with the central portion 5 to ensure accuracy of the working machine as a whole. High crushed soil, scraping, and earth removal work can be performed.

[0017]

As described above, according to the folding agricultural working machine of the present invention, the following effects can be obtained by the constitutions of claims 1 to 4.

.. The agricultural work machine is provided with a shield cover, an apron and a leveler on the outer periphery of the rotary working section, and the apron and the leveler are arranged in a working position without using a connecting member for the apron and the leveler of the central section without using a connecting member. The shield cover part can be rotated to the folding position, and a leveler angle adjustment mechanism that adjusts the support angle of the leveler is provided between the shield cover part and the leveler, so that the size and shape of the field can be adjusted. Together,
A form in which the central part and the left and right work machine parts are all worked, a form in which the left and right work machine parts are folded with respect to the central part and a work is carried out only in the central part, and either the left and right work machine parts are folded with respect to the central part It is possible to select and work in the form of working in the center portion or in either of the left and right working machine portions.
Also, when deploying the left and right work equipment parts to the working state,
The height of the adjacent levelers can be easily adjusted by the leveler angle adjusting mechanism.

Further, the leveler angle adjusting mechanism is a connecting rod whose length is adjustable, and the leveler is fitted to the opposite ends of the leveler in the central portion and the leveler in the working machine portion when the leveler is in the working position. When the mating and folding positions are set, a concave portion and a convex portion that release the fitting are provided, and the inner end portion of the apron of the working machine portion and the outer end portion of the apron in the central portion are opposed to each other.
Since the apron fixing device is provided to connect and fix the working machine parts to each other when the working machine parts are in the working state, and to release the connection when the working machine parts are folded, the left and right working machine parts are in the working state. Apron and leveler, which are adjacent to each other when unfolded, are connected to each other by a concave part, a convex part, and an apron fixing device so that the working machine part in the central part and the working machine parts on the left and right operate in synchronization. The accuracy can be improved. Further, it is possible to easily and smoothly perform the work of folding the working machine portion with respect to the central portion and unfolding it from the folded state to the working state.

[Brief description of drawings]

FIG. 1 is a plan view of an entire folding type scraping harrow according to the present invention.

FIG. 2 is a side view of the left and right working machine parts developed to work.

FIG. 3 is a side view showing a state in which the left and right work machine parts are folded.

FIG. 4 is a partial plan view of a shield cover, an apron and a leveler.

5 is an end view taken along line PP of FIG.

6 is an end view taken along the line QQ in FIG.

[Explanation of symbols]

1st generation harrow 2 Lower link connection 3 top masts 4 Speed change gear box 4a Input shaft The central part of the 5th generation harrow 6L Left working machine part 6R Right working machine part 7 Rotation axis (rotation fulcrum) 8,8a transmission frame 9,10 Chain transmission case 11,12 Side plate 13,13a Crushed soil / scraping rotor (rotary working section) 14 clutch 15,15a Shield cover 16,16a apron 17,17a Leveler 18 Apron angle adjustment device 19 Fixed rod 20 apron fixed rod 21 Connecting rod 21a Length adjusting screw 22 convex 23 recess

Continued front page    F term (reference) 2B033 AA04 AB01 AB11 AC04 DB01                       DB35 DB43                 2B041 AA06 AB05 AC03 BA08

Claims (4)

[Claims] 1. A rear part of a tractor is vertically movably mounted to a central part of a farming machine through a connecting device, and power is transmitted from the tractor to the central part of the farming machine.
An agricultural working machine in which the working machine parts extending from the central part to the left and right sides of the central part are respectively foldable to the central part side, wherein the agricultural working machine has a shield cover on the outer periphery of the rotary working part, An apron and a leveler are provided, and the apron and the leveler are rotatable in the shield cover part between the apron and the leveler in the central part, in the working position and the folding position without using a connecting member. A folding agricultural working machine characterized in that a leveler angle adjusting mechanism capable of adjusting the support angle of the leveler is provided between the shield cover part and the leveler. 2. The folding agricultural working machine according to claim 1, wherein the leveler angle adjusting mechanism is a connecting rod whose length is adjustable. 3. The recessed portion, wherein the leveler is fitted to opposite end portions of the leveler in the central portion and the leveler in the working machine portion when the leveler is in the working position and when the leveler is in the folding position, the fitting is released. The folding agricultural working machine according to claim 1 or 2, further comprising: 4. The working machine portion is connected and fixed to the opposite position of the inner end portion of the apron of the working machine portion and the outer end portion of the apron of the central portion when the working machine portion is in a working state, and the working machine portion is folded. The folding agricultural working machine according to claim 1, 2 or 3, further comprising an apron fixing device for releasing the connection to release the fixing.