JPH10113004A - Hitch device for farm work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To selectively attach and detach a hitch for work time and the hitch for moving time provided in a farm work machine to/from the connector of a tractor and to improve the hitch for the moving time. SOLUTION: This hitch device is constituted of the hitches 6a and 6b for the work time shifted to one left or right side of the farm work machine and provided and the hitches 7a and 7b for the moving time provided on the horizontal center part of the farm work machine. The base part of the hitches 7a and 7b for the moving time is supported freely turnably back and forth by a pin to a main body frame 2, made turnable and fixable to a using position to be projected to the front side of a machine body and a housing position to be housed in the rear part of the machine body and made detachable by pulling out the pin. At the time of turning the hitches 7a and 7b for the moving time to the using position or the housing position, the pin is inserted and fixed between the side of the main body frame 2 and a hitch frame 7c. At the time of turning the hitches 7a and 7b for the moving time to the using position or the housing position, a turning lock pin 11 is inserted, disposed and fixed between the side of the main body frame 2 and the hitch frame 7c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work machine which is detachably mounted on a tractor connector through a hitch device having a working hitch and a moving hitch.

[0002]

2. Description of the Related Art Conventionally, a hitch provided on a main body frame is detachably attached to a rear portion of a tractor via a connecting member, and a ridge and a pretreatment body are offset to one of left and right sides of the main body frame. The provided furrowing machine (agricultural work machine) is described in, for example, Japanese Patent Application Laid-Open No. Hei 8-9706.

As an offset type hitch,.
Multiple sets of hitches are provided integrally on the body frame,
Selected to be connected to the tractor connector,. With a hitch slidable left and right with respect to the body frame,. A hitch provided rotatably in a left-right direction with respect to a main body frame is known.

[0004]

In the former ridge coating machine, when traveling on a road or entering or exiting a field, the ridge and the pretreatment body are offset to the left and right sides of the rear part of the traveling machine. The right and left balance is poor, and there is a danger of falling, and there is a possibility that the connection support portion of the working machine and the tractor may be damaged due to an unbalanced load.

In the latter case, the problem of damage to the connection support portion of the working machine and the tractor due to the offset load due to the offset is reduced, but the weight of the body is increased and the structure is complicated. Higher production costs,
There was a problem. The present invention has been made to solve the above problems.

[0006]

In order to achieve the above object, the present invention provides: In an agricultural work machine detachably mounted via a hitch device to a connector of a tractor, the above-mentioned hitch device is provided with a working hitch provided to be biased to one side of the left and right sides of the farm work machine, and a left and right center of the agricultural work machine. And a moving hitch provided at a portion thereof, and a base of the moving hitch is supported by a pin so as to be able to rotate back and forth with respect to a main body frame, and is projected to the front side of the fuselage to be connected to a connecting tool of a tractor. Use position,
Can be rotated and fixed to the storage position stored behind the aircraft,
In addition, the pin is detachably provided by extracting the pin.

B. When the hitch for movement is rotated to the use position or the storage position, a pin is inserted between the main body frame side and the hitch frame to be fixed at each position.

C. When the moving hitch is rotated to the use position or the storage position, a rotation lock pin is inserted and bridged between the main body frame side and the hitch frame to be fixed at each position. And

[0009]

According to the above construction, the hitch device of the agricultural working machine of the present invention comprises: a. The hitch device is composed of a working hitch provided to be biased to one of the left and right sides of the agricultural working machine, and a moving hitch provided at the left and right central portions of the farm working machine, and the base of the moving hitch is formed as a main body. It is pivotally supported by a pin with respect to the frame, and can be rotated and fixed to a use position where it projects to the front of the fuselage and is connected to the tractor connector, and a storage position where it is stored behind the fuselage, and By detachably providing by pulling out the pin, when attaching a farm work machine to the tractor and traveling on the road or going in and out of the field, by connecting the connecting tool of the tractor to the moving hitch,
The left and right balance of the farm work machine is improved and the vehicle can run safely. Also, when working in the field, the tractor connection tool is connected to the work hitch. When not using the moving hitch, secure it in the storage position or remove it.

B. When the moving hitch is rotated to the use position or the storage position, the pin is inserted between the main frame and the hitch frame and fixed at each position, so that the moving hitch is used or stored. The position can be easily changed to a stable operation.

C. When the moving hitch is rotated to the use position or the storage position, a turning lock pin is inserted and erected between the body frame side and the hitch frame and fixed at each position, so that the moving hitch is moved. It is stably held in a state where it is easily switched to the use position or the storage position.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the accompanying drawings. In the figure, reference numeral 1 denotes a ridge coating machine (agricultural work machine) that is connected to a connecting tool composed of a top link and a lower link provided at a rear portion of a tractor (not shown) and that performs a levee work. This ridge coater 1
At the rear end of the main body frame 2 also serving as a transmission case, a ridge body 3 and a pretreatment body 4 are provided in a working state offset to one of the left and right (lower in FIG. 1, left in front view).

A hitch device 5 is provided at the front of the ridge coating machine 1 so as to be detachably connected to a connecting tool of the tractor. The hitch devices 5 are provided at the left and right sides of the furrowing machine 1 (the right side in this embodiment), and are provided at the work-side hitches 6a, 6b, 6b, and at the left and right central portions of the furrowing machine 1. It comprises a moving hitch 7a, 7b, 7b. The operation hitches 6a and 6b are fixed to the main body frame 2, and the moving hitches 7a and 7b are provided so as to be pivotable back and forth and detachable as described later.

The bases of the moving hitches 7b, 7b are:
A use position where a pair of left and right brackets 8, 8 projecting upward from the main body frame 2 is supported by a pivot pin 9 so as to be able to rotate back and forth, and projects toward the front side of the fuselage to be connected to a tractor connector. (Shown by a solid line) and a storage position (shown by an imaginary line) that is stored behind the machine. Further, the fixed pin 10 or the rotation lock pin 11
By this, it is possible to fix and release. The moving hitches 7a, 7b, 7b can be removed from the brackets 8, 8 by pulling out the pivot pins 9.

When the moving hitches 7a, 7b, 7b are pivoted about the pivot pins 9 to a use position or a storage position, the brackets 8, 8 and the moving hitches 7b, 7b are rotated.
The fixing pin 10 is inserted between the hitch frames 7c, 7c and fixed at respective positions.
Numeral 0 denotes a spring type, which has a conventionally well-known structure that can be easily inserted into and removed from the fixing hole.

When the moving hitch 7a, 7b, 7b is turned to the use position or the storage position about the pivot pin 9, one of the brackets 8 and the moving hitch 7b are moved.
Between the fixing pin 1 and one of the hitch frames 7c.
The rotation lock pin 11 is inserted and bridged in place of 0 and fixed at each position.
The structure is such that it can be easily inserted into and removed from the fixing holes of the bracket 8 and the hitch frame 7c by a simple operation.

An input shaft 12 protrudes forward from the front of the body frame 2 on the side of the work hitches 6a, 6b, 6b, and a PTO of a tractor (not shown) is attached to the input shaft 12.
Rotational power is transmitted from the shaft via the universal joint and the transmission shaft. The rotational power input from the input shaft 12 is changed in speed by a gear box 13 provided on the main body frame 2, transmitted through the main body frame 2, and drives the ridge 3 and the pretreatment body 4.

The hitches 6a, 6 for working the body frame 2
A gauge wheel 15 is provided at an end of the b, 6b side via a vertical adjustment support portion 14 so as to be vertically adjustable. In addition, a working unit vertical adjustment handle 16 is provided on a portion of the main body frame 2 that supports the ridge body 3 and the pretreatment body 4,
The working depth of the ridge body 3 and the pretreatment body 4 is adjusted. Reference numerals 17, 17 are detachably provided on the left and right end portions of the main body frame 2, and are used when connecting the ridge coating machine 1 to the tractor or when moving the ridge coating machine 1 in a grounded state. It is.

As shown in FIG. 2, the ridge body 3 has a polygonal cone-shaped drum eccentrically fixed thereto. The polygonal cone-shaped drum 3 has a large number of ridge lines and flat portions, and At the same time, the soil excavated by the pretreatment body 4 is applied to the inclined surface of the original ridge by the polygonal conical drum 3, and the horizontal of the original ridge is provided by the horizontal cylindrical body 3a provided at the rotation center of the polygonal conical drum 3. The top is painted and the ridges are arranged.

The pretreatment body 4 comprises a rotary tilling device having a large number of excavating claws mounted on the outer periphery of a horizontal rotating shaft via a large number of claw mounting boxes. The excavation claw is composed of a vertical blade part that excavates the former ridge and the rice field in the vertical direction, and a horizontal blade part that bends to one side from the vertical blade part. The former ridge side is shallower than the former ridge and the rice field, and the rice field side is deeper. The length (rotation radius) of the vertical blade portion is varied so that the horizontal blade portion excavates in a stepwise manner. The excavation claw forms a substantially horizontal staircase in which the former ridge side is shallower and the rice field side is deeper.

Then, the excavation claw excavates the original ridge and the rice field, and the soil excavated by the excavation claw is applied to the rear side of the pretreatment body 4 against the horizontal step surface formed on the rice field side of the original ridge. Is applied by the polygonal conical drum and the horizontal cylindrical body 3a of the ridges 3 provided on the ridges, or the surface is beaten, and the new ridges are overlaid on the original ridges to form new ridges.

Between the ridge body 3 and the pretreatment body 4, the pretreatment body 4 extends from the rear part of the pretreatment body 4 to the outer periphery of the ridge body 3.
A soil flow guide 18 made of an elastic plate that guides the soil plowed toward the ridge body 3 by fixing the base end portion to the rear portion of the pretreatment body 4 and the tip end portion as a free end is provided. . The soil flow guide 18 guides the soil excavated by the excavation claw toward the polygonal conical drum 3 and the horizontal cylindrical body 3a, and is applied to the original ridge by the polygonal conical drum 3 and the horizontal cylindrical body 3a. It is tied. Ridge 3 and pretreatment 4
Is covered by a ridge cover 19 and a pretreatment cover 20.

In the ridger 1 having the above structure,
When the tractor is mounted with the ridge coater 1 to travel on the road or enter or leave the field, the connecting tool of the tractor is fixed to the fixing pin 10.
Alternatively, a moving hitch 7a, 7b, 7b fixed to a state protruding toward the front side of the fuselage by a rotation lock pin 11 is provided.
, The left-right balance of the ridge coater 1 is good, and the ridge coater 1 can travel safely. As a result, the connecting parts of the tractor, the connecting parts of the moving hitches 7a, 7b, 7b, the brackets 8, 8 and the body frame 2 are not damaged.

When the tractor is mounted on the ridge coating machine 1 and the work is performed in the field, the connecting tool of the tractor is connected to the working hitch 6.
a, 6b, and 6b are connected to perform the levee work. At this time, the moving hitches 7a, 7b, 7b are not used, and the moving hitches 7a, 7b, 7b are fixed to the fixing pin 1.
It is fixed to the storage position rotated backward by the zero or the rotation lock pin 11. This way, you won't get in the way. By removing the pivot pin 9, the moving hitches 7a, 7b, 7b are removed from the brackets 8, 8.
By removing, the weight of the ridge coater 1 is reduced, the weight balance is improved, and the load on the tractor is reduced.

[0025]

As described above, according to the hitch device for an agricultural work machine of the present invention, the following effects can be obtained.

The hitch device connected to the connecting tool of the tractor is constituted by a working hitch provided on one side of the left and right sides of the agricultural working machine and a moving hitch provided on the left and right central portions of the farm working machine. Then, the base of the moving hitch is supported by a pin so as to be able to rotate back and forth with respect to the main body frame, and is projected to the front side of the fuselage to be connected to the connecting member of the tractor, and is stored behind the fuselage. It can be rotated and fixed to the storage position and detachable by removing the pin, so when attaching a farm work machine to the tractor and traveling on the road or going in and out of the field, move the coupling of the tractor By connecting to the time hitch, the left and right balance of the agricultural work machine is improved, and the vehicle can travel safely. Further, when the agricultural work machine works in the field, the connecting tool of the tractor may be connected to the working hitch. When the moving hitch is not used, the load on the tractor can be reduced by fixing to the storage position or removing the hitch without disturbing the work.

When the moving hitch is rotated to the use position or the storage position, a pin is inserted between the body frame side and the hitch frame to be fixed at each position. Can be easily switched to the use position or the storage position, and stable work can be performed.

When the moving hitch is turned to the use position or the storage position, a turning lock pin is inserted between the body frame side and the hitch frame and fixed at each position. The moving hitch can be stably held in a state where it is easily switched to the use position or the storage position.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a ridge coater (agricultural work machine) to which the present invention is applied.

FIG. 2 is a side view of the same.

[Explanation of symbols]

Reference Signs List 1 ridge coater 2 main body frame 3 ridged body (polygonal conical drum) 3a horizontal cylindrical body 4 pretreatment body (rotary tilling device) 5 hitch device 6a, 6b, 6b working hitch 7a, 7b, 7b When moving Hitch for hitch 7c Hitch frame 8 Bracket 9 Pivot pin 10 Fixing pin 11 Rotation lock pin 12 Input shaft 13 Gear box 14 Up / down adjustment support section 15 Gauge wheel 16 Work section up / down adjustment handle 17 Stand with casters 18 Soil flow guide 19 Leveling ridge Body cover 20 Pretreatment body cover

Claims (3)

[Claims] An agricultural work machine removably attached to a connecting tool of a tractor via a hitch device, wherein the hitch device is provided with a work hitch provided to be biased to one of the left and right sides of the agricultural work machine. A moving hitch provided at the left and right central portion of the agricultural work machine, a base of the moving hitch is supported by a pin with respect to a main body frame so as to be able to rotate back and forth, and protrudes to the front side of the body to connect a tractor. A hitch device for an agricultural work machine, wherein the hitch device is provided so as to be rotatable and fixable between a use position connected to a tool and a storage position stored behind the machine body and to be removable by extracting the pin. 2. When the moving hitch is turned to a use position or a storage position, a pin is inserted between the main body frame and the hitch frame to fix the hitch at each position. The hitch device for an agricultural work machine according to claim 1, wherein 3. When the moving hitch is turned to a use position or a storage position, a turning lock pin is inserted between the body frame and the hitch frame so as to be fixed at each position. The hitch device for an agricultural work machine according to claim 1, wherein the hitch device is provided.