KR102435093B1 - Farm working machinery of center driving type - Google Patents

Abstract

The present invention relates to a farm working machinery connection structure of a central drive type. As the farm working machinery connection structure which is connected to a farm tractor to enable transmission of a power, a farm working machinery is equipped with a mounting box having respective mounting pins at an upper part and a lower part.

Description

Connection structure of a central driving type agricultural work machine

The present invention relates to a central drive type agricultural work machine, and more particularly, to a central drive type agricultural work machine connection structure in which the agricultural work machine can be easily attached and detached using a quick attachment to the rear of the agricultural tractor.

BACKGROUND ART In general, a rotavator, which is one of agricultural work machines, is an agricultural machine used to till the land for sowing or transplanting crops.

In other words, the rotavator is mounted on a tiller or tractor, and a plurality of tillage blades provided on a tillage shaft that receives power from the engine of the tiller or tractor rotate, so that the farmland can be tilled to an appropriate depth to sow or transplant crops. will be.

Such a rotovator has been proposed in the Republic of Korea Registered Utility Model No. 20-0492282 (hereinafter referred to as 'prior art literature').

The conventional rotavator disclosed in the prior art document has a main body in which a power transmission unit to which the power of the tractor is transmitted is provided in the upper central region, both ends of which are closed with respective side plates, and both sides of the power transmission unit and both side plates respectively installed between the side plates. A support frame, a gear coupling shaft provided rotatably through a side plate on the left side through a support frame, that is, a left support frame, with the other end connected to one end of the power transmission unit, and fixed to the left end of the gear coupling shaft A gearbox is configured including a first sprocket wheel rotated in a fixed state and a second sprocket wheel connected by a chain while being coupled and fixed to a tillage shaft.

At this time, a plurality of tillage blades are installed on the tillage shaft in a coupled and fixed state, and the farmland is tilled to an appropriate depth while being rotated by the tillage shaft.

That is, when the power of the tractor is transmitted to the power transmission unit, its power is transmitted to the gear coupling shaft connected to the power transmission unit to rotate the gear coupling shaft in the support frame, and the first sprocket wheel coupled and fixed to the gear coupling shaft is The second sprocket wheel connected to the chain rotates as it rotates along with the gear coupling shaft, and as the tillage shaft is rotated by the rotation of the second sprocket wheel, a plurality of tillage blades till the farmland.

However, when installing a working machine such as a rotavator on the rear of the tractor, the operator manually inserts a connecting pin into the connection between the three-point link and the rotavator while the rotavator is positioned on the three-point link at the rear of the tractor and fixes it. It is necessary to connect the PTO shaft of the tractor to the rotavator, and this series of connection work is very difficult and cumbersome, which has an inconvenient disadvantage that it can only be connected only with the cooperation of two or more skilled workers.

Republic of Korea Registered Utility Model No. 20-0492282

Therefore, the present invention has been devised to solve the problems of the prior art as described above, and a quick attachment is provided on the three-point link at the rear of the agricultural tractor, and the center of the quick attachment to be able to easily detach and attach the agricultural work machine. An object of the present invention is to provide a connection structure for a driving type agricultural work machine.

The central driving type agricultural work machine connection structure according to the present invention for achieving the above object is an agricultural work machine connection structure that is connected to a farm tractor to transmit power, and the agricultural work machine has mounting pins at the upper and lower sides respectively. A box is provided, and a quick attachment having an upper link and a lower link coupled to the upper and lower mounting pins of the mounting box, respectively, is characterized in that the agricultural work machine connection structure is provided in the tractor.

And, the quick attachment includes a frame provided with an upper link of the three-point link of the tractor hinged, and a slider provided on both sides of the frame and provided with a lower link of the three-point link hinged, and the frame has an upper link on the upper link. An upper hook coupled to the upper mounting pin of the mounting box may be rotatably provided to the slider, and a lower hook coupled to the lower mounting pin of the mounting box by a lower link may be rotatably provided to the slider.

In addition to this, the quick attachment may be provided so that the sliders are provided in and out of both sides of the frame so that the width of both sliders can be adjusted.

In addition, the agricultural work machine may be provided with a gearbox driven by receiving the power of the tractor in the center thereof, and a mounting box is hinged to the gearbox so that the gearbox is rolled based on the hinge with the mounting box.

In addition, a front hinge plate and a rear hinge plate are formed to protrude from the mounting box, and the gearbox is provided with an input shaft that is coupled through the front hinge plate and can rotate relatively, and a hinge plate that is hinged to the rear hinge plate with a pin and a rollable hinge plate is provided, the rear The hinge plate may be provided with a plurality of long holes through which a pin passing through the hinge plate of the gearbox is coupled to flow up and down, and a stop hole through which another pin passing through the hinge plate is coupled to block the flow.

In addition, a shock absorber may be provided between the mounting box and the gearbox to cushion the gearbox being rolled in the mounting box.

According to the central drive type agricultural work machine connection structure of the present invention, since the agricultural work machine can be easily and quickly attached to and detached from the quick attachment installed on the three-point link at the rear of the agricultural tractor, the workability thereof is improved.

1 is a view of a state in which a rotavator exemplified as an example of an agricultural work machine according to the present invention is connected to a tractor by a quick attachment.
Figure 2 is a view showing a quick attachment according to the present invention.
Figure 3 is an exploded view of the rotavator and the quick attachment according to the present invention.
4 is an exploded view of FIG. 3 viewed from another direction.
FIG. 5 is a combined view of FIG. 4 .
6 is an exploded view of the rotavator according to the present invention.
7 is a front configuration view of the rotavator according to the present invention.
FIG. 8 is a side configuration view of FIG. 7 .
9 is a separate view of the gearbox and the mounting box configured in the rotavator according to the present invention.
10 is a view showing a shock absorber configured between the rotavator and the mounting box according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The terms used in the present invention are terms defined in consideration of the functions in the present invention, which may vary depending on the intention or custom of the user or operator, so the definitions of these terms correspond to the technical matters of the present invention and should be interpreted as a concept.

In addition, the embodiments of the present invention do not limit the scope of the present invention, but are merely exemplary matters of the constituent elements presented in the claims of the present invention, and are included in the technical spirit throughout the specification of the present invention and the scope of the claims. It is an embodiment including a substitutable component as an equivalent in the component.

In addition, optional terms in the examples below are used to distinguish one component from other components, and the components are not limited by the terms.

Accordingly, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention will be omitted.

1 to 10 are views showing a centrally driven rotavator, a quick attachment, and a connection structure thereof according to the present invention.

As shown in the drawing, the agricultural work machine according to the present invention is connected and mounted to the rear of the agricultural tractor so as to transmit power.

Here, the agricultural work machine includes a harvester, a rotavator, a plow, a planter, a mower, a cover machine, a trailer, a baler, a compost spreader, and the like, but in this embodiment, the rotavator 100 is illustrated as an example of an agricultural work machine as shown in the drawing. to explain

And, the agricultural work vehicle to which the rotavator 100 is mounted will be described by taking the agricultural tractor as an example.

As shown in FIG. 1 , the rotavator 100 is mounted on the rear of the tractor.

A three-point link consisting of an upper link 10 and a lower link 11 is provided at the rear of the tractor 1, and a quick attachment 200 is coupled and mounted to the three-point link of the tractor 1, and the quick attachment ( 200) is coupled to the rotavator 100 is mounted.

On the other hand, the quick attachment 200 is a frame 210 to which the upper link 10 of the three-point link of the tractor 1 is rotatably coupled, and the frame 210 as shown in FIGS. 2 and 3 . It is provided on both sides and includes a slider 220 to which the lower link 11 of the three-point link is rotatably coupled.

The frame 210 is provided in parallel with the rotovator 100, and an upper hook 211 coupled to a mounting box 130 to be described later is rotatable on the upper link 10 on the side facing the rotovator 100. is provided

In addition, the slider 220 is provided orthogonally to the rotavator 100, and the lower link 11 on the side facing the rotavator 100 has a lower hook 221 coupled to a mounting box 130 to be described later. It is provided rotatably.

In addition, the slider 220 as described above is provided to enter and exit from both sides of the frame 210, so that the width of both sliders 220 can be adjusted.

On the other hand, the upper hook 211 on the side of the frame 210 is formed in a hook shape with an opening facing downward at the tip end thereof, and the upper mounting pin 133 of the mounting box 130 configured in the rotavator 100 to be described later. is coupled to

A power transmission unit 230 for transmitting the power of the tractor 1 to the rotavator 100 is provided on the lower surface of the frame 210, and is coupled with the power transmission unit 120 of the gearbox 110 to be described later. do.

In addition, the lower hook 221 on the slider 220 side is formed in a hook shape facing upward so that the opening is opposite to the opening of the upper hook 211 at the tip end thereof, and the lower mounting pin ( 134).

Accordingly, the upper hook 211 of the quick attachment 200 is fitted and coupled to the upper mounting pin 133 of the mounting box 130 configured in the rotavator 100 from top to bottom, and the lower part of the quick attachment 200 The hook 221 is fitted and coupled to the lower mounting pin 134 of the mounting box 130 from the bottom to the top so that the upper and lower hooks 211 and 221 are rotated in a direction facing each other, and the upper and lower mounting pins ( 133 and 134 are defective, the rotavator 100 is mounted to the quick attachment 200 with a strong coupling force.

On the other hand, as described above, the rotavator 100 detachably attached to the quick attachment 200 of the tractor 1 is driven by receiving the power of the tractor 1 in its central part, as shown in FIGS. 6 to 8 . The gearbox 110 is provided integrally, and the left and right sides of the rotavator 100 are balanced based on this gearbox 110 .

In particular, a hollow mounting frame 113 is provided on both upper sides of the gearbox 110 to protrude, and the mounting frame 113 has a center back plate covering the main shaft 111 or the tillage shaft 190 ( 150) is provided, and both sides of the center back plate 150 are provided with side back boards 160 coupled thereto. At this time, the side back plate 160 may be provided to be in and out between the center back plate 150 and the mounting frame 113 so as to extend the rotovator 100 .

And, at the rear end of the center back plate 150, a central door leaf 170 extending toward the ground to cover the main shaft 111 or the tilling shaft 190 is rotatably provided, and also at the rear end of the side back plate 160. A side door leaf 180 extending toward the ground is rotatably provided.

In particular, the side door leaf 180 is provided so as to be able to enter and exit from both sides of the central door leaf 170 , so that the overall length of the door leaf can be extended like the upper center back plate 150 and the side back plate 160 .

In addition, the gearbox 110 on the mounting frame 113 is provided with a power transmission unit 120 connected to the power transmission unit 230 of the quick attachment 200 to receive the power of the tractor 1, As shown in FIG. 8 , the power transmission units 120 and 230 may be provided to transmit power through coupling by corresponding dog clutches.

In addition, as shown in FIG. 8 , the power transmission unit 120 has an input shaft 121 to protrude toward the quick attachment 200 of the tractor 1 , and a dog clutch is provided at the tip of the protruding input shaft 121 . is provided to be fixed, and a first sprocket wheel 124 is connected to the rear end of the input shaft 121 to transmit power.

The first sprocket wheel 124 is connected to the second sprocket wheel 112 of the main shaft 111 to be described later through the chain 125 to enable power transmission.

In addition, the main shaft 111 is provided on both sides of the lower portion of the gearbox 110 to protrude from both sides of the gearbox 110 as shown in FIG. 6 , and the second sprocket wheel 112 is fixed to the main shaft 111 . It is provided so that the second sprocket wheel 112 and the main shaft 111 are simultaneously rotated in the gearbox 110 .

Accordingly, the power of the tractor 1 is input to the input shaft 121 through the power transmission units 120 and 230, and the input power is the first sprocket wheel 124, the chain 125, and the second sprocket wheel ( 112) to the main shaft 111 and output.

Each tillage shaft 190 on which the tillage blade 191 is installed is provided on the main shaft 111 in a state in which relative rotation is impossible, and the tillage shaft 190 on both sides rotates like the main shaft 111 in farmland. will cultivate

On the other hand, as shown in FIG. 7 , the main shaft 111 or the tillage shaft 190 or the main shaft 111 and the tillage shaft 190 provided as described above by removing weeds from the soil cultivated while rotating like the shaft. A lug bar 116 that blocks weeds from being wound around the shaft is provided.

The lug bar 116 is provided in the axial direction between the shaft and the tiller blade 191 to remove weeds not removed by the tiller blade 191, thereby preventing weeds from being wound around the shaft in advance.

In addition, although the lug bar 116 is exemplified as being provided only on the main shaft 111 in FIG. 7 of this embodiment, it is preferable to be provided on the main shaft 111 as well as the tillage shaft 190 .

In particular, when the lug bar 116 is provided on the main shaft 111 , a bearing is provided between the gearbox 110 and the main shaft 111 , and a tilling blade 191 is provided on the inner ring rotating like the main shaft 111 among the bearings. ) is fixed, and the tilling blade 191 may be provided with a lug bar 116 to protrude in the axial direction. It is preferable that the lug bar 116 provided in this way is provided to face the gearbox 110 to prevent weeds from being wound around the output end of the gearbox 110 .

On the other hand, the lug bars 116 as described above are provided on both sides of the gearbox 110, respectively, and the lug bars 116 on both sides of the gearbox 110 are provided symmetrically to each other by 180 degrees. As such, when the lug bars 116 on both sides of the gearbox 110 are symmetrically provided by 180 degrees with respect to the gearbox 110, the balance can be maintained when the main shaft 111 is rotated, and when the balance of the main shaft 111 is maintained, vibration and operation noise can be reduced.

The gearbox 110 as described above is mounted to and detached from the quick attachment 200 by the mounting box 130 , and the mounting box 130 is hinged to the upper portion of the mounting frame 113 .

Such a mounting box 130 is hinge-coupled to the front and rear hinge portions of the gearbox 110, respectively, and the front hinge portion of the gearbox 110 is configured at the front end of the input shaft 121, and the gearbox 110 of the rear hinge portion is configured at the rear end of the mounting frame 113 .

In particular, the front hinge portion of the gearbox 110 includes a hinge bushing 123 coupled to the front end of the input shaft 121 to be rotatably coupled to the front end of the input shaft 121 via a bearing 122, and the outer surface of the hinge bushing 123 is described later. The front hinge plate 131 of the mounting box 130 to be fitted is hinged.

And, the rear hinge portion of the gearbox 110 includes a plurality of hinge plates 114 formed on the upper surface of the rear end of the mounting frame 113, and the hinge plate 114 has a coupling hole 114a of the hole in a triangular shape. It is provided to be spaced apart. A rear hinge plate 132 of the mounting box 130 to be described later is sandwiched between the plurality of hinge plates 114 and is hinge-coupled.

Therefore, the rotavator 100 is rotated left and right up and down based on the front and rear hinges of the mounting box 130 to be described later coupled and fixed to the quick attachment 200, and the rotor is rotated by rolling. The baiter 100 can always till the farmland in a state maintained horizontally, regardless of the smoothness of the farmland.

In addition, as the gearbox 110 is provided in the central part of the rotavator 100, there is uncultivated land W that has not been cultivated as much as the width of the gearbox 110 as shown in FIG. 7 in farmland under the gearbox 110. will do

Accordingly, the lower surface of the gearbox 110 is provided with a plow protrusion 115 protruding downward as shown in FIGS. 8 and 9 , and the plow protrusion 115 is an uncultivated area W corresponding to the width of the gearbox 110 . ) is excavated.

In particular, during the tillage operation of the rotavator 100, the soil of farmland is transferred to the lower part of the central lower part of the rotavator 100, that is, the gear box 110, by the tillage operation of the tillage blade rotated on both sides of the gearbox 110. This is accumulated, the plow protrusion 115 disperses the accumulated soil in this way and at the same time removes the weeds of the uncultivated land W.

On the other hand, the upper portion of the gear box 110 as described above is provided with a hinged mounting box 130 as shown in FIGS. 3 to 8 .

As shown in FIGS. 8 and 9, the mounting box 130 includes a cover part 130a that covers the upper surface of the gearbox 110, that is, the power transmission part 120, and a quick attachment 200 of the tractor and It includes a “∧”-shaped extension 130b extending downward from one end of the adjacent cover portion 130a.

Mounting pins 133 to which the upper hook 211 and the lower hook 221 of the quick attachment 200 are respectively caught and coupled to the cover portion 130a and the extension portion 130b, as shown in FIGS. 4 and 5 , respectively. ) (134) is provided.

Among these mounting pins, the upper mounting pin 133 is fixedly formed on the upper surface of the cover portion 130a, the upper hook 211 of the quick attachment 200 is coupled, and the lower mounting pin 134 is formed with both extension portions 130b. ) is formed to be fixed to the lower end of the quick attachment 200, the lower hook 221 is coupled.

At this time, the upper hook 211 and the lower hook 221 coupled to the upper and lower mounting pins 133 and 134 are formed in a hook shape, and the openings of the upper and lower hooks 211 and 221 face each other. It is provided in the direction and coupled to the upper and lower mounting pins 133 and 134 , so that the rotavator 100 can be firmly mounted on the quick attachment 200 .

In addition, the cover portion 130a of the mounting box 130 is provided with front and rear hinge portions hingedly coupled to the front and rear hinge portions of the gearbox 110 .

The front hinge portion of the mounting box 130 includes a front hinge plate 131 protruding downward from the front end of the lower surface of the cover portion 130a, and the front hinge plate 131 has a hinge bushing 123 of the input shaft 121. A through hole 131a through which the through hole is coupled is formed.

Accordingly, the hinge bushing 123 coupled through the through hole 131a of the front hinge plate 131 is provided to rotate (rotate) in place in the front hinge plate 131 . At this time, the front hinge plate 131 may be provided as a front coupling plate and a rear pipe part, in this case the front coupling plate is fixed to the outer ring of the bearing interposed between the input shaft 121 and the hinge bushing 123 . may be, and the rear tube portion may be provided by being fitted on the outer surface of the hinge bushing 123 .

In addition, the rear hinge portion of the mounting box 130 includes a rear hinge plate 132 protruding downward from the rear end of the lower surface of the cover portion 130a, and the rear hinge plate 132 has one stop hole 132a and The plurality of long holes 132b are formed in a triangular shape.

In particular, the stop hole 132a is formed in the upper portion of the rear hinge plate 132 , and the plurality of long holes 132b are formed to be spaced apart from each other in the same line at the lower portion of the rear hinge plate 132 , and are vertically elongated at the same time.

The coupling pins are respectively coupled to both long holes 132b of the rear hinge plate 132, and the coupling pins pass through the long holes 132b and are formed as a bottom coupling hole in the hinge plate 114 of the gearbox 110 ( It is provided to be coupled through 114a). Accordingly, the gearbox 110, that is, the rotavator 100 is provided to be rolled up and down by the vertical length of the long hole 132b in the mounting box 130, and the rolling rotavator 100 is always maintained horizontally with respect to the farmland. be able to

In addition, a coupling pin is selectively coupled to the stop hole 132a of the rear hinge plate 132 . This coupling pin also penetrates through the stop hole 132a and is coupled through the upper coupling hole 114a formed as a hole in the hinge plate 114 of the gearbox 110 to fix the rotovator 100 to the mounting box 130 . to block rolling. In this way, in the state in which the rolling of the rotavator 100 is blocked, the tractor can be safely moved.

On the other hand, between the mounting box 130 and the rotavator 100 as described above, a plurality of shock absorbers 140 for buffering the rolling of the rotavator 100 are provided on both sides, respectively.

As shown in FIG. 10, the shock absorber 140 includes a cylinder body 140a to which hydraulic pressure acts therein, and a rod 140b provided to be in and out from one end of the cylinder body 140a.

The lower end of the cylinder body 140a is hinged to the lower end of the extension 130b of the mounting box 130, and the rod 140b that enters and exits from the upper end of the cylinder body 140a has its front end (upper end) of the gearbox. (110) is hinged to the mounting frame (113).

Therefore, when both ends of the rotavator 100 are rolled up and down in the mounting box 130, the rods 140b on both sides that are rolled up and down like the rotavator 100 are buffered while entering and leaving each cylinder body 140a. it will work

On the other hand, in this embodiment, in constituting the shock absorber 140, the cylinder body 140a is positioned downward, coupled to the lower end of the extension portion 130b of the mounting box 130, and the rod 140b is positioned upward. It exemplifies a structure coupled to the mounting frame 113 of the gearbox 110, which is a cylinder body (with a rod 140b) for preventing damage to the rod 140b by foreign substances splashing upward during tillage work of farmland. It is located on the upper portion of the 140a), it is possible to prevent the malfunction of the shock absorber 140 as the damage to the rod (140b) is prevented.

In addition, on the rear surface of the extension portion 130b of the mounting box 130 (the surface facing the rotavator 100), the shock absorber 140 during tillage work by the rotavator 100 blocks foreign substances from splashing toward the A guard 141 to protect the shock absorber 140 is provided.

At this time, the guard 141 is not only formed of a plate having an area sufficient to cover the rear surface of the shock absorber 140 , but also may be inclined to correspond to the inclination of the shock absorber 140 . In this way, when the guard 141 is provided inclined to correspond to the shock absorber 140, the area that can cover the shock absorber 140 is secured to the maximum compared to the same area, so that the shock absorber 140 can be protected more safely. there will be

The rotavator 100 of the central driving method according to the present invention as described above is connected and mounted to the quick attachment 200 at the rear of the tractor 1 in a state in which power transmission is possible.

That is, the connection of the rotovator 100 is performed using the three-point link of the tractor 1 in a state where the gap between the upper hook 211 and the lower hook 221 of the quick attachment 200 is widened, and both lower hooks 221 ) After rotating from bottom to top to the lower mounting pin 134 provided in the mounting box 130 of the rotavator 100 and coupling the upper hook 211 to the upper mounting pin 133 of the mounting box 130 Rotating the rotavator 100 to the quick attachment 200 side by the three-point link and the upper hook 211 while rotating it from top to bottom and pulling it counterclockwise in FIG. 200) and is coupled.

At this time, in the process in which the rotavator 100 is positioned in the quick attachment 200 , the power transmission unit 230 of the quick attachment 200 is provided in the power transmission unit 120 of the gearbox 110 , the input shaft 121 ) and combined in the form of a dog clutch, power transmission becomes possible.

Accordingly, the rotavator 100 receives the power of the tractor 1 through the power transmission unit 120 coupled to the power transmission unit 230 of the tractor (1).

As shown in FIG. 8, the transmitted power is input to the input shaft 121 of the power transmission unit 120 configured on the upper portion of the gearbox 110, and the input power is the first sprocket wheel connected to the input shaft 121 ( 124) is transmitted to the second sprocket wheel 112, and the power transmitted to the second sprocket wheel 112 is output through the main shaft 111 provided on both sides of the second sprocket wheel 112, respectively.

As described above, the power output to the main shaft 111 rotates the main shaft 111, and the tillage shaft coupled thereto is rotated by the rotation of the main shaft 111 to till farmland.

On the other hand, since the rotavator 100 as described above is provided with a gearbox 110 in the center thereof, the left and right sides are always operated in a state in which the left and right sides are always horizontal around the gearbox 110, so that the farmland can be cultivated evenly. do.

In addition, the rotavator 100 is the gearbox 110 provided therein by being rolled up and down by the length of the long hole 132b in the fixed mounting box 130 attached to the quick attachment 200 of the tractor. Regardless of the smoothness of the farmland, it is possible to cultivate the farmland in a state that is always maintained horizontally.

Although the present invention has been described in detail through specific examples, it is intended to describe the present invention in detail, and the present invention is not limited thereto, and by those of ordinary skill in the art within the technical spirit of the present invention. It is clear that the modification or improvement is possible.

All simple modifications and variations of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

1: tractor 10: upper link
11: lower link 100: rotovator
110: gear box 111: main shaft
112: second sprocket wheel 113: mounting frame
114: hinge plate 114a: coupling hole
115: plow stone 116: rug bar
120: power transmission unit 121: input shaft
122: bearing 123: hinge bushing
124: first sprocket wheel 125: chain
130: mounting box 130a: cover part
130b: extension 131: front hinge plate
131a: through hole 132: rear hinge plate
132a: stop hole 132b: long hole
133,134: mounting pin 140: shock absorber
140a: cylinder body 140b: rod
141: guard 150: center back
160: side back 170: central door
180: side door leaf 190: tillage shaft
191: tillage day 200: quick attachment
210: frame 211: upper hook
220: slider 221: lower hook
230: power transmission unit

Claims (6)

As an agricultural work machine connection structure that is connected to an agricultural tractor to transmit power,
The agricultural work machine is provided with a mounting box having respective mounting pins on the upper and lower sides, and quick attachments having upper hooks and lower hooks respectively coupled to the upper and lower mounting pins of the mounting box are provided in the agricultural tractor. connected to the tractor,
The mounting box is hinged to the gearbox while covering the power transmission part of the gearbox at the top of the gearbox provided in the central part of the agricultural work machine, and the gearbox is provided to be rolled based on the hinge with the mounting box,
A shock absorber is provided between the mounting box and the gearbox to cushion the gearbox rolling in the mounting box, and the mounting box is equipped with a guard to protect the shock absorber from foreign substances.
The method according to claim 1,
The quick attachment includes a frame to which an upper hook coupled to an upper mounting pin of a mounting box is hinged, and a slider provided on both sides of the frame and a lower hook coupled to the lower mounting pin of the mounting box is hinged. .
3. The method according to claim 2,
The quick attachment is provided so that the sliders are in and out from both sides of the frame, so that the width of both sliders can be adjusted.
delete The method according to claim 1,
In the mounting box, a front hinge plate and a rear hinge plate are formed to protrude,
The gearbox is provided with an input shaft that is coupled through the front hinge plate to be able to rotate relatively, and a hinge plate that is hinged to the rear hinge plate with a pin and can be rolled;
Agricultural work machine connection structure provided with a plurality of long holes through which a pin penetrating the hinge plate of the gearbox is coupled to the rear hinge plate to flow up and down, and a stop hole through which other pins passing through the hinge plate are coupled to block the flow . delete

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