KR102432991B1 - Farm working machinery of center driving type - Google Patents

Abstract

The present invention relates to a center driving-type farm working machinery mounting structure, wherein a farm working machinery is connected to a quick attachment provided in a farm tractor to be able to transmit power. The farm working machinery has a mounting box having mounting pins at an upper part and a lower part, respectively. An input shaft, to which power is input, is provided in a gear box hinge-coupled to the lower part of the mounting box. The quick attachment has rotatable upper and lower links having upper and lower hooks, which are coupled to the upper and lower mounting pins of the mounting box, respectively. An output shaft, from which power of the tractor is output, is provided between the upper hook and the lower hook. When the quick attachment and the farm working machinery are connected, the input shaft and the output shaft are coupled so as to transmit power. The present invention enables the farm working machinery to be simply and firmly mounted to the quick attachment.

Description

Agricultural work machine mounting structure of a central drive type {Farm working machinery of center driving type}

The present invention relates to a centrally driven agricultural work machine, and more particularly, to a centrally driven agricultural work machine mounting structure in which the agricultural work machine can be firmly and conveniently mounted as 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 agricultural work machine can be easily and firmly mounted to the quick attachment. An object of the present invention is to provide a mounting structure for agricultural work equipment of a central drive type.

The central driving type agricultural work machine mounting structure according to the present invention for achieving the above object is an agricultural work machine mounting structure in which the agricultural work machine is connected to a quick attachment provided in the agricultural tractor to transmit power. A mounting box having respective mounting pins is provided on the , and an input shaft to which power is input is provided in the gearbox hinged to the lower portion of the mounting box, and the quick attachment has an upper and lower mounting pins respectively coupled to the upper and lower mounting pins of the mounting box, An upper link and a lower link having a lower hook are rotatably provided, and an output shaft through which the power of the tractor is output is provided between the upper hook and the lower hook. It is characterized by a mounting structure for agricultural work equipment provided so that this is possible.

In addition, the quick attachment includes a frame provided with an upper link hinged, and a slider provided on both sides of the frame while a lower link is hinged, and the slider is provided to enter and exit from both sides of the frame, the width of both sliders It may be provided to adjust the.

In addition, the output shaft is connected to the universal joint with the PTO shaft of the tractor while being elastically supported by the frame, and an elastic member for returning the output shaft to its original position may be provided between the output shaft and the frame.

In addition, the quick attachment is provided with a support plate that protrudes toward the agricultural work machine, a cut coupling groove is formed in the support plate, and a locking protrusion opposite to the support plate protrudes from the mounting box. As it is coupled, it may be provided to block the flow when the quick attachment and the agricultural work machine are connected.

In addition, the support plate may be provided so as to guide the engaging protrusions inserted into the engaging groove of the support plate, the both ends of which are formed with guide protrusions obliquely protruding outward from the engaging groove.

In addition, the slider includes a support frame that enters and exits from its lower surface, and the support frame may be provided to be fixed in position with a fixing pin passing through the slider and the support frame.

According to the central drive type agricultural work machine mounting structure of the present invention, as a quick attachment installed on the three-point link at the rear of the tractor, the agricultural work machine is mounted simply and firmly, thereby improving its workability.

And, according to the present invention, when the quick attachment and the agricultural work machine are coupled, the power transmission unit is provided to be automatically coupled, thereby making power transmission simple.

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.
2 is a view showing a quick attachment according to the present invention.
3 is a view showing an outrigger structure provided in the quick attachment according to the present invention. FIG. 3a is a view of a state in which a support frame is drawn into the slider, and FIG. 3b is a view of a state in which the support frame is withdrawn from the slider. .
Figure 4 is an exploded view of the rotavator and the quick attachment according to the present invention. - Previous 3rd degree
5 is an exploded view of FIG. 4 viewed from another direction.
FIG. 6 is a combined view of FIG. 5 .
7 is a view showing the separation state between the rotavator and the quick attachment according to the present invention from the side.
8 is an exploded view of the rotavator according to the present invention.
9 is a front configuration view of the rotavator according to the present invention.
10 is a separated view of the gearbox and the mounting box configured in the rotavator according to the present invention.
11 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 11 are views showing a centrally driven rotavator and a quick attachment and a mounting 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.

The rotavator 100 is mounted on the rear of the tractor 1 as shown in FIG. 1 .

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 provided on both sides of the frame 210 and the frame 210 to which the upper link 10 of the three-point link of the tractor 1 is rotatably coupled, as shown in FIG. 2 . and a slider 220 to which the lower link 11 of the three-point link is rotatably coupled.

The frame 210 is provided with a hollow square pipe parallel to the rotavator 100 , and an upper hook 211 coupled to a mounting box 130 to be described later is rotatably provided on the side facing the rotovator 100 . do.

In addition, the slider 220 is also formed as a square pipe and is provided orthogonally to the rotavator 100 , and a lower hook 221 coupled to a mounting box 130 to be described later is rotatable on the side facing the rotavator 100 . is provided

The slider 220 is provided to enter and exit from both sides of the frame 210 in the axial direction of the frame 210 , so that the width of both sliders 220 can be adjusted.

In addition, a support frame 222 in the form of a square pipe is provided on the lower surface of the slider 220 to enter and exit, and the support frame 222 to enter and exit from the slider 220 passes through the slider 220 and the support frame 222 . It is provided to be fixed in position by the fixing pin 223 . At this time, a plurality of fixing holes through which the fixing pins 223 are coupled are formed in the slider 220 at upper and lower portions, respectively, and one fixing hole is formed in the support frame 222 corresponding to the fixing holes.

Accordingly, the support frame 222 is drawn out from the slider 220 and grounded to the ground to support the quick attachment 200, so that when connecting the mounting box 130 of the rotavator 100 to the quick attachment 200, the flow is Since it is minimized, it can be easily installed.

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, the power transmission unit 230 is composed of an output shaft 231 provided to be positioned downwardly via the fixing plate 232 to the frame 210 . One side of the output shaft 231 is connected to the PTO shaft of the tractor 1 by a universal joint, the power of the tractor 1 is transmitted to the output shaft 231 and output, and the other side of the output shaft 231 is a gearbox to be described later. It is meshed with the input shaft 121 of 110 and is provided in a state in which power transmission is possible.

The output shaft 231 is provided to be positioned under the frame 210 by the fixing plate 232 , so that it is possible to easily secure an installation space for the universal joint connected thereto.

And, since the upper end of the fixing plate 232 is provided as a fixed end fixed to the frame 210 and the lower end is provided as a free end, it has tension.

In addition, the support pin 233 is provided through the fixed plate 232 on the output shaft 231, and the output shaft 231 that has flowed between the support pin 233 and the fixed plate 232 is returned to the original position. An elastic member for returning is provided.

Therefore, when the teeth do not match with each other in the process of coupling the input shaft 121 of the gearbox 110 to the output shaft 231 , the output shaft 231 is elastically pushed backward by the fixing plate 232 and then the spring 234 . ) is returned to the original state by the restoring force of the input shaft 121 and is engaged again.

At this time, teeth corresponding to each other are formed on the input shaft 121 and the output shaft 231 , and inclined surfaces are formed on one surface of both teeth in contact with each other to induce smooth engagement.

And, the support pin 233 may be composed of a bolt and a nut, and the elastic member may be provided with a compression coil spring 234 (hereinafter referred to as "spring").

On the other hand, when connecting the rotavator 100 to the quick attachment 200 of the tractor 1 as described above, both sides are heavy, so it is possible to prevent a safety accident only when connected in a state in which the flow is suppressed.

Accordingly, a support plate 240 protruding toward the rotavator 100 is provided on the upper surface of the frame 210 , and a plurality of coupling grooves 242 cut toward the tractor 1 are formed in the support plate 240 . A locking protrusion 136 of a mounting bracket 135 to be described later is inserted into the coupling groove 242 of the support plate 240 so that the locking protrusion 136 and the support plate 240 are coupled in a crossed form.

Therefore, since the support plate 240 and the locking projection 136 coupled in a cross form are mutually supported by each other, it is possible to suppress the flow when the quick attachment 200 and the rotavator 100 are connected.

And, the support plate 240 is formed with guide protrusions 241 whose opposite ends protrude outwardly from the coupling groove 242 in an inclined state, so that the support plate 240 is inserted into the coupling groove 242 of the support plate 240 with a locking protrusion ( 136) to induce rapid coupling.

The support plate 240 formed in this way is formed to protrude upward from the frame 210 so that the locking protrusion 136 of the mounting box 130 is inserted into the coupling groove 242 of the support plate 240 and is in a solid locking state. be able to maintain

On the other hand, as described above, the rotavator 100, which is 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. 7 to 9 . 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. 7 , 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. 7 , the power transmission unit 120 has an input shaft 121 protruding 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. 8 , 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. 9 , 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. 9 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. 9 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. 7 and 10 , 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. 3A to 7 .

As shown in FIGS. 7 and 10, 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 the tractor's quick attachment 200 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 engaged and coupled to the cover portion 130a and the extension portion 130b, respectively, as shown in FIGS. 5 and 6 , 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 .

On the other hand, among the above mounting pins, the upper mounting pin 133 is provided to connect between the plurality of mounting brackets 135 protruding upward from the upper surface of the mounting box 130 , and the front of the mounting bracket 135 has a quick A locking protrusion 136 that is inserted into and coupled to the coupling groove 242 formed in the support plate 240 of the attachment 200 is formed to protrude. These locking protrusions 136 are provided in a shape or form that can be inserted into the coupling groove 242 of the support plate 240 to be hooked on the inner end of the coupling groove 242 .

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. 11 , the shock absorber 140 includes a cylinder body 140a to which hydraulic pressure acts therein, and a rod 140b provided to enter and exit 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 between the quick attachment 200 and the rotavator 100 is performed using the three-point link of the tractor 1 in a state in which the gap between the upper hook 211 and the lower hook 221 of the quick attachment 200 is widened. Both lower hooks 221 are coupled by rotating from bottom to top to the lower mounting pins 134 provided in the mounting box 130 of the rotavator 100 .

Thereafter, when the upper hook 211 is coupled to the upper mounting pin 133 of the mounting box 130 by rotating it from top to bottom, the rotavator 100 is rotated counterclockwise by pulling the upper hook 211 in FIG. 7 . is rotated to be pulled toward the quick attachment 200, and in this process, the locking protrusion 136 of the mounting box 130 is inserted into the coupling groove 242 formed in the support plate 240 of the quick attachment 200 and crossed As they are combined in a shape, shaking, that is, flow is suppressed.

In this process, while the rotavator 100 is coupled to the quick attachment 200 in a fixed position, the input shaft 121 of the gearbox 110 is engaged with the output shaft 231 of the quick attachment 200 in the form of a dog clutch to transmit power. This 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. 7, 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 rolling 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, so that the rotavator 100 Regardless of the level of 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: gearbox 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 135: mounting bracket
136: stumbling block 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
222: support frame 223: fixing pin
230: power transmission unit 231: output shaft
232: fixing plate 233: support pin
234: spring 240: support plate
241: guide protrusion 242: coupling groove

Claims (5)

As an agricultural work machine mounting structure in which the agricultural work machine is connected to a quick attachment provided in the agricultural tractor to transmit power,
The agricultural work machine is provided with a mounting box having respective mounting pins on the upper and lower portions, and the gearbox hinged to the lower portion of the mounting box is provided with an input shaft to which power is input,
The quick attachment includes an upper hook and a lower hook opened in opposite directions to be coupled to the upper and lower mounting pins of the mounting box, respectively, rotatably provided, and an output shaft through which the power of the tractor is output is provided between the upper hook and the lower hook When the quick attachment and the agricultural work machine are connected, the output shaft and the input shaft are combined to enable power transmission,
Agricultural work machine mounting structure further provided with a connection means for matching the shaft centers of the input shaft and the output shaft when the mounting box and the quick attachment are connected.
The method according to claim 1,
The quick attachment includes a frame provided by hinged upper hooks, and sliders provided on both sides of the frame while lower hooks are hingedly provided, respectively,
The slider is provided to enter and exit from both sides of the frame so that the width of both sliders can be adjusted.
The method according to claim 1,
The connection means is provided with a support plate protruding toward the agricultural work machine in the quick attachment, and a cut coupling groove is formed in the support plate,
An agricultural work machine mounting structure that can block the flow when the quick attachment and the agricultural work machine are connected as the locking protrusion and the support plate are combined in a cross shape by protruding from the mounting box a locking protrusion opposite to the support plate and inserted into the coupling groove of the support plate.
4. The method of claim 3,
The support plate is formed with guide protrusions whose opposite ends protrude obliquely outward from the coupling groove, and an agricultural work machine mounting structure for guiding the locking protrusions inserted into the coupling groove of the support plate.
3. The method according to claim 2,
The slider includes a support frame that enters and exits from its lower surface, and the support frame is an agricultural work machine mounting structure provided to be fixed in position with a fixing pin passing through the slider and the support frame.

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