WO2024048853A1

WO2024048853A1 - Rollable and automatically extendable agricultural work machine

Info

Publication number: WO2024048853A1
Application number: PCT/KR2022/019060
Authority: WO
Inventors: 김중호
Original assignee: 김중호
Priority date: 2022-08-31
Filing date: 2022-11-29
Publication date: 2024-03-07
Also published as: KR20240030623A

Abstract

The present invention relates to a rollable and automatically extendable agricultural work machine. The agricultural work machine is mounted to a farm tractor, so as to be able to transmit power thereto, while being towed by an attachment/detachment part of the farm tractor. A mounting box is hinge-coupled to a central portion of the agricultural work machine. The attachment/detachment part is coupled and fixed to the mounting box, and both sides of the work machine can be rolled so as to be diagonally inclined with respect to the hinge coupling the work machine and the mounting box. A connecting link for preventing the agricultural work machine from shaking back and forth while rolling is provided between the agricultural work machine and the mounting box.

Description

Rollable, automatically expandable agricultural implement

The present invention relates to a rollable, automatically extendable agricultural implement, and more specifically, to a rollable, automatically extendable agricultural implement that prevents the back and forth rocking of the agricultural implement when it is rolled or swung so that both sides of the agricultural implement are inclined diagonally based on the connection connected to the tractor. It is about agricultural work equipment.

In general, a Rotavator, 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 tractor, an agricultural work vehicle, and rotates a plurality of tillage blades mounted on a knife shaft that receives power from the tractor's engine, tilling farmland to an appropriate depth so that crops can be sowed or transplanted. .

This rotavator has been proposed in Korea Registered Utility Model No. 20-0492282 (hereinafter referred to as 'prior art document').

The conventional rotavator disclosed in the prior art literature includes a power transmission unit through which the power of the tractor is transmitted in the upper central area, a main body with both ends finished with respective side plates, and two sides installed between the power transmission unit and both side plates. A gear coupling shaft that is rotatably provided to penetrate the left side plate through one side of the support frame, i.e. the left support frame, with one end connected to the support frame and the power transmission unit, and the other end is coupled and fixed to the left end of the gear coupling shaft. A gearbox is composed of a first sprocket wheel that rotates in a fixed state and a second sprocket wheel that is connected to a chain and rotates in a fixed state coupled to a knife shaft.

At this time, a plurality of tillage blades are installed in a coupled and fixed state on the knife axis, and are rotated by the knife axis to till the farmland to an appropriate depth.

In other words, when the power of the tractor is transmitted to the power transmission unit, the power is transmitted to the gear coupling shaft connected to the power transmission unit, causing the gear coupling shaft to rotate within the support frame, and the first sprocket wheel coupled and fixed to the gear coupling shaft As it rotates with the gear coupling shaft, the second sprocket wheel connected to the chain rotates, and as the knife shaft rotates due to the rotation of the second sprocket wheel, a plurality of tillage blades till the farmland.

However, since the conventional rotavator is mounted in a fixed state at the rear of the tractor, it is difficult to maintain levelness on irregularly uneven farmland due to the nature of the farmland. As a result, if the rotavator is not maintained horizontally on the farmland, the rotatorvator Since the tillage blade of the farmland is tilled at an angle to the farmland, the tillage depth of the farmland varies, which has the disadvantage of not being able to till the farmland evenly.

In addition, even if the rotavator is connected to the tractor in a rolling manner, when the rotavator in contact with irregular farmland rolls along the surface of the farmland, the gap generated at the connection between the rotavator and the tractor causes the rotavator to rock back and forth in the forward and backward directions, making it difficult to till. Because it can deviate from its correct position and roll backwards and forwards, part of the farmland remains uncultivated, and the overall tillage area for the farmland is distorted, which has the disadvantage of being.

(patent literature)

Republic of Korea Registered Utility Model No. 20-0492282

Therefore, the present invention was developed to solve the problems of the prior art as described above, and both sides of the agricultural implement are connected to the tractor to be rolled so that they can be inclined diagonally, while the agricultural implement is rolled to be inclined diagonally from the tractor. The purpose is to provide a rolling, automatically extendable agricultural implement that blocks and prevents the forward and backward shaking of the agricultural implement.

The rollable, automatically extendable agricultural implement according to the present invention for achieving the above-described object is an agricultural implement that is mounted to transmit power to an agricultural tractor while being towed by a detachable part of the agricultural tractor. The agricultural implement has a mounting box in its center. is provided in a hinged manner, and a detachable part is fixedly connected to the mounting box, so that both sides of the implement are rolled so that they can be inclined diagonally based on the hinge with the mounting box, and between the agricultural implement and the mounting box, an agricultural implement is provided. It is characterized in that it is provided with a connecting link that prevents the back and forth rocking of the wheel when rolling.

In addition, the front hinge plate and the rear hinge plate are formed to protrude in the mounting box, and the input shaft of the work machine through which the power of the agricultural tractor is input is coupled to the front hinge plate so that it can be relatively rotated. The rear hinge plate is provided with a hinge of the work machine. There is a long hole where the pin fixed to the plate is movably coupled, so that the work machine can roll in the mounting box, and a fixing pin that penetrates the hinge plate of the work machine is coupled to the rear hinge plate to block the rolling of the work machine. A stop hole may be provided.

In addition, the agricultural implement is equipped with a main shaft that is rotated by receiving the power of the tractor at its center, and each side of the main shaft is coupled to move in the axial direction, so that it is pulled out and expanded or retracted and contracted from the main shaft, while rotating along with the main shaft. A knife axis for tilling work is provided, hydraulic means is provided to move the knife axis from the main axis, and a back plate can be provided to cover the main axis and the knife axis by moving with the knife axis and expanding or contracting by the hydraulic means for moving the knife axis. there is.

In addition, the back panel includes a central back panel that is provided on the upper part of the main axis and covers the main axis, and side back boards that are movably coupled to each side of the central back board and are provided to expand or contract from the central back board, and the side back boards are operated by hydraulic means. It may be provided to move along with the knife axis.

In addition, the side light panel may be further provided with a connecting plate that connects the side light panel to the knife axis so that the side light panel and the knife axis are moved simultaneously by hydraulic means.

Specifically, the connecting plate is fixed to the side back plate, and the knife axis is rotatable on the connecting plate. The knife axis is provided with an end block that finishes the inside of the knife axis, and the connecting plate is provided with a seal on the end block protruding from the knife axis. A bearing housing is provided that is coupled to the bearing, and a bearing is provided between the bearing housing and the end block to allow the end block to rotate with the knife axis. The bearing housing has a bearing housing that blocks exposure of the bearing and the end block while supplying lubricant to the bearing. A cap nut having a work tool may be provided in combination.

In addition, the hydraulic means includes a slide tube fixed to the center back plate; A plurality of slide pipes are each fixed to both side lights and are provided to enter and exit the slide pipe, and a port through which hydraulic pressure enters and exits is formed on one side; It is fixed in a state that penetrates the slide pipe, and both ends are inserted into and moveable in both slide pipes. It includes a connecting rod that has ports through which hydraulic pressure enters and exits on both sides, and hydraulic pressure is supplied to the port of the slide pipe on one side. Accordingly, the connecting rod and both slide tubes may be provided to extend and expand.

In addition, the knife axis includes a fixed knife axis fixed to the main axis, and a movable knife axis movable from the main axis. Between the fixed knife axis and the movable knife axis, the length of the movable knife axis increases or decreases as it moves to prevent foreign matter from wrapping. A bar may be provided.

In addition, the fixed knife shaft between the two foreign material prevention bars may be provided with a lug bar that rotates along with the shaft to remove foreign materials and prevent foreign materials from becoming entangled in the shaft.

Additionally, a shock absorber may be provided between the agricultural implement and the mounting box to cushion the implement rolling in the mounting box.

According to the rolling, automatically extendable agricultural working machine of the present invention, both sides of the agricultural working machine connected to the tractor are rolled diagonally along the irregular farmland with respect to the connection portion, while the forward and backward shaking of the rolling agricultural working machine can be effectively blocked and prevented, As a result, farmland can be tilled without exception, which has the advantage of improving tillage efficiency.

Figure 1 is a diagram showing a rotavator as an example of an agricultural work tool according to the present invention.

Figure 2 is a side configuration diagram showing a central drive type driving unit for driving the rotavator according to the present invention.

Figure 3 is an exploded view showing a structure in which the gearbox included in the rotavator according to the present invention is connected to the mounting box in a rollable state.

Figure 4 is a diagram showing the shock absorber and connecting link configured between the rotavator and the mounting box according to the present invention.

Figure 5 is a front cross-sectional diagram showing the expansion and contraction structure of the rotavator according to the present invention.

FIG. 6A is an enlarged view of part A of FIG. 5, and FIG. 6b is an enlarged view of part B of FIG. 6A.

Figure 7 is an enlarged view of part C of Figure 5.

Figure 8 is an exploded view of the rotavator according to the present invention.

Figure 9 is a cross-sectional configuration diagram of the cylinder means configured on the back plate of the rotavator according to the present invention.

Figures 10 and 11 are views showing the rotavator according to the present invention in an expanded state and a collapsed state, respectively.

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

The terms used in the present invention are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator, so the definitions of these terms are defined in accordance with the technical details of the present invention. It 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 illustrative of the components presented in the claims of the present invention, and are included in the technical idea throughout the specification of the present invention and are included in the claims. This is an embodiment that includes components that can be replaced as equivalents in the components.

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

Accordingly, when describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention are omitted.

1 to 11 are diagrams showing a centrally driven rotavator, an expansion structure, and a support structure of the rotavator as an example of a rollable automatically extendable agricultural work machine according to the present invention.

As shown in the drawing, the rollable, automatically extendable agricultural implement according to the present invention is connected and mounted to enable power transmission to the rear of the agricultural tractor, and both sides of the agricultural implement mounted on the agricultural tractor are rolled obliquely and the length thereof is is provided to expand to the left and right.

Here, agricultural work machines include harvesters, rotavators, plows, seeders, mowing machines, mulching machines, trailers, balers, and compost spreaders. However, in this embodiment, the rotavator 100 is exemplified as an example of agricultural work machines as shown in the drawing. Let me explain.

In addition, an agricultural tractor equipped with the rotavator 100 will be described as an example of an agricultural work vehicle.

Meanwhile, as shown in FIG. 1, the rotavator 100 as described above is connected to the detachable part 200 mounted on the rear of the tractor (not shown).

First, as shown in FIGS. 1 and 2, the detachable part 200 includes a frame 210 provided in parallel with the rotavator 100, and a slider 220 provided to be accessible at both ends of the frame 210. ) includes.

The frame 210 is provided with an upper link 10 hinged on its upper surface, and an upper hook 211 with an open lower surface is rotatably coupled to the front end of the upper link 10, forming a rotator 100 to be described later. ) is coupled to the upper mounting pin of the mounting box 126 configured in ).

In addition, a power transmission unit 230 is provided on the lower surface of the frame 210 to transmit the power of the tractor to the rotavator 100, and is coupled to the power transmission unit 120 of the gearbox 110, which will be described later.

In addition, the slider 220 is provided with a lower link of the three-point links provided in the tractor at the lower end, and a lower hook 221 with an upper surface is rotatably coupled to the distal end of the lower link, respectively, as described later. It is coupled to the lower mounting pin of the mounting box 126.

Accordingly, the upper hook 211 of the detachable part 200 is coupled to the upper mounting pin of the mounting box 126 included in the rotator 100 by being inserted from the top down, and the lower hook 221 of the detachable part 200 ) is fitted and coupled to the lower mounting pin of the mounting box 126 from bottom to top, so that the upper and

lower hooks

211 and 221 are rotated in the direction facing each other and are attached to the upper and lower mounting pins of the mounting box 126. Accordingly, the rotator 100 is mounted on the detachable part 200 with a firm coupling force.

On the other hand, as shown in FIGS. 1 to 3 and 5, the rotator 100, which is detachable and attached to the detachable part 200 of the tractor as described above, has a gearbox in its center that is driven by receiving power from the tractor. (110) is provided, and the left and right sides can be balanced based on the gearbox 110 to maintain levelness.

This gearbox 110 is provided to be mounted on and detachable from the detachable portion 200 by a mounting box 126. The mounting box 126 attaches the gearbox 110 to the upper part of the slide pipe 161, which will be described later. It is provided in a covered state.

This mounting box 126 is hinged to the front and rear hinge parts of the gearbox 110, respectively. The front hinge part of the gearbox 110 is formed at the front end of the input shaft 121, and the gearbox 110 The rear hinge portion is formed at the rear end of the slide tube (161).

In particular, the front hinge portion of the gearbox 110 includes a hinge bushing 123 coupled to the distal end of the input shaft 121 to enable relative rotation via a bearing 122, and the outer surface of the hinge bushing 123 is described later. The front hinge plate 128 of the mounting box 126 is inserted and hinged.

In addition, the rear hinge portion of the gearbox 110 includes a plurality of hinge plates 127 formed on the upper surface of the rear end of the slide pipe 161, and the hinge plate 127 has a connecting hole 127a of the regular hole having a triangular shape. It is provided in a separate state. The rear hinge plate 129 of the mounting box 126, which will be described later, is inserted and hinged between the plurality of hinge plates 127.

Accordingly, the rotator 100 is coupled to the detachable part 200 and rolls so that the left and right sides are inclined in opposite directions based on the front and rear hinge parts of the towed mounting box 126, and the rotator 100 is coupled to the detachable part 200 and rolls with the left and right sides inclined in opposite directions. The rotavator 100 can always be provided in a horizontal state with respect to the farmland regardless of the flatness of the farmland, and since the farmland is tilled in this state, the tillage depth can be maintained at a constant level.

That is, when the tractor is tilted to the left due to irregular farmland, the rotavator 100 may be tilted relatively to the right according to the farmland. Conversely, when the tractor is tilted to the right, the rotavator 100 may be tilted relatively to the right according to the farmland. There is a rolling effect that can cause it to tilt to the left.

In addition, the gearbox 110 is equipped with a power transmission unit 120 that is connected to the power transmission unit 230 of the tractor, that is, the detachable part 200 and inputs the power of the tractor. The power transmission unit 120 is detachable. It may be coupled to the power transmission unit 230 of the unit 200 as a dog clutch structure to transmit power.

In addition, as shown in FIG. 2, the power transmission unit 120 is provided with an input shaft 121 to protrude toward the detachable part 200 of the tractor, and a dog clutch is fixed to the front end of the protruding input shaft 121. A first sprocket wheel 124 is connected to the rear end of the input shaft 121 to enable power transmission.

This first sprocket wheel 124 is connected to the second sprocket wheel 112 of the main shaft 111, which will be described later, via a chain 125 to enable power transmission.

In addition, a main shaft 111 is provided at the lower part of the gearbox 110 to protrude on both sides of the gearbox 110, and a second sprocket wheel 112 is fixedly provided at the outer center of the main shaft 111. 2 The sprocket wheel 112 and the main shaft 111 are provided to rotate simultaneously.

As a result, the power of the tractor is input to the input shaft 121 through the power transmission unit 120, and the input power is transmitted to the main shaft ( 111) and output.

Meanwhile, as the gearbox 110 is provided in the center of the rotavator 100 as described above, uncultivated land exists in the farmland below the gearbox 110 as much as the width of the gearbox 110.

Accordingly, the lower end of the gearbox 110 is provided with a plow protrusion 110a protruding downward as shown in FIGS. 2 and 3, and the plow protrusion 110a covers uncultivated land corresponding to the width of the gearbox 110. It becomes cave-in.

In particular, during the tilling operation of the rotavator 100, the tilling operation of the tilling blade 151 rotated on both sides of the gearbox 110 moves to the lower center of the rotavator 100, that is, the lower part of the gearbox 110. Soil from excavated farmland may accumulate, and the plow protrusions (110a) disperse the accumulated soil to both sides and simultaneously remove weeds from uncultivated land.

As shown in FIGS. 1 and 8, a mounting box 126 is provided in a hinged manner on the upper part of the gear box 110.

This mounting box 126 has a box-shaped cross-sectional structure with an open lower surface, and includes a cover part 126a that covers the upper surface of the gearbox 110, that is, the power transmission part 120, a detachable part 200 of the tractor, and It includes a “∧” shaped extension portion 126b extending downward from one end of the adjacent cover portion 126a.

The cover portion 126a and the extension portion 126b are provided with mounting pins that engage and engage the upper and

lower hooks

211 and 221 of the detachable portion 200, respectively. Among the mounting pins, the upper mounting pin is It is formed to be fixed to the upper surface of the cover part 126a and is coupled to the upper hook 211 of the detachable part 200, and the lower mounting pin is formed to be fixed to the lower ends of both extension parts 126b to form the detachable part 200. The lower hook 221 is provided to be coupled.

Meanwhile, a hollow main shaft 111 penetrates the lower part of the gearbox 110 and is provided to protrude on both sides of the gearbox 110, and a hollow knife shaft 150 is provided on both sides of the main shaft 111 ( 150a), as shown in FIG. 7, is formed in a square shape or other polygonal shape and is joined by shape fitting so that relative rotation is not possible.

In addition, the upper part of the gearbox 110 is provided with a back panel whose length is adjusted according to the length of the knife axis 150 (150a), which is expanded or contracted by moving from the main axis 111, and the back panel includes a central back panel 160 and a side back panel. It is provided including (170).

First, the knife axis 150 (150a) provided on the main axis 111 includes a movable knife axis 150 that slides in the axial direction of the main axis 111 and a fixed knife axis 150a that is coupled and fixed to the main body 111. In addition, both

knife axes

150 and 150a are coupled to the main shaft 111 in a polygonal shape.

These

knife shafts

150 and 150a are provided with a plurality of tillage blades 151 installed at regular intervals for tillage work.

In particular, the movable knife axis 150 is provided to slide and protrude while being shape-fittedly coupled to the main axis 111, and the main axis 111 is provided with hydraulic means for sliding and moving the movable knife axis 150 on the main axis 111. It is provided.

This hydraulic means slides and moves the movable knife axis 150 on the main axis 111, while simultaneously sliding and moving the side back panel 170 along with the movable knife axis 150 on the central back plate 160, which will be described later. This will be explained in detail in the description of the back plate that will be described later.

On the other hand, as shown in FIG. 5, the fixed knife shaft (150a) among the above knife axes has a bracket (hereinafter collectively referred to as "fixed knife shaft") for mounting the tilling blade 151 on the fixed knife shaft (150a) on the center side. That is, a lug bar 152 is provided that protrudes toward the gearbox 110 and rotates with the fixed knife shaft 150a to remove weeds from the soil being tilled and prevent the weeds from being wrapped around the shaft.

This lug bar (152) is provided to protrude in the axial direction between the shaft and the tilling blade (151) and can prevent weeds from being wrapped around the shaft by removing weeds dug up from the soil by the tilling blade (151). There will be.

And, as described above, both lug bars 152 located on both sides of the gearbox 110 with the gearbox 110 in between may be provided symmetrically at 180 degrees. That is, if both lug bars 152 are provided symmetrically by 180 degrees with respect to the gearbox 110, balance can be maintained when the main shaft 111 rotates, and if the balance of the main shaft 111 is maintained, vibration and operating noise are reduced. It is possible to reduce the occurrence of.

In addition, both lug bars 152 have front ends protruding toward the gearbox 110 from both sides of the gearbox 110 inclined in the outer direction of the fixed knife shaft 150a, which is formed by the lug bar 152. The removed weeds are wound around the lug bar 152. At this time, the removed weeds are moved to the outer end (fixed end) of the lug bar 152, which is far away from the gearbox 110.

As a result, even if the weeds removed by the lug bar 152 are wrapped around the lug bar 152, it is possible to prevent the weeds from being wrapped around and entangled in the gearbox 110 and its output stage, thereby preventing malfunction. do.

In addition, a foreign matter wrapping prevention bar 153 is further provided between the fixed knife axis 150a and the movable knife axis 150, the length of which increases or decreases as the movable knife axis 150 moves.

As shown in Figures 10 and 11, the foreign matter winding prevention bar 153 is provided by combining multi-stage bars with different diameters in a telescopic structure, so that foreign matter such as weeds can be moved by rotating and expanding together with the knife axis 150 (150a). It is possible to prevent winding around the knife axis 150 and the main axis 111 in advance.

Like the lug bar 152, the foreign matter prevention bar 153 can also be provided symmetrically at 180 degrees on both sides of the gearbox 110, and the effect of this is that the lug bar 152 and Since it has the same effect, it is replaced with the explanation of the lug bar 152.

In addition, as described above, the movable knife axis 150 that protrudes and extends from the main axis 111 is preferably provided in a state that overlaps the main axis 111 by more than 40%, and in this area, covering or using the extended knife axis 150 Since clearance that may occur between the movable knife shaft 150 and the main shaft 111 can be eliminated during rotary work such as tilling, work can be performed stably.

Meanwhile, as shown in FIGS. 6A and 6B, the main shaft 111 connected to both sides of the gearbox 110 is provided with a sealing portion to block leakage of oil for lubrication.

This sealing part is provided in the gearbox cover 130 formed as a hollow cylinder that is respectively coupled and fixed to both sides of the gearbox 110, and the gearbox cover 130 and the main shaft 111 are located at the outer end of the gearbox cover 130. ) is provided with a support plate 131 that covers the sealing portion provided between them.

This support plate 131 covers the gap between the outer end of the gear box cover 130 and the main shaft 111, and is bolted to and fixed to the bearing fixing member 133 of the sealing portion, which will be described later.

As a result, a space is provided between the gearbox cover 130 and the main shaft 111 by the gearbox cover 130 and the support plate 131, and sealing parts are installed at both ends of this space.

As shown in Figure 6b, the sealing part is provided on the bearing 132 provided inside the space spaced apart from the gearbox cover 130 and the main shaft 111, and on the outside of the space spaced apart from the bearing 132. A bearing fixing member 133 that supports and fixes the bearing 132 with one end in contact with the bearing 132, a group seal 134 provided between the bearing fixing member 133 and the bearing 132 to maintain airtightness, and , It includes a group seal support member 135 that is provided between the group seal 134 and the bearing 132 and supports the group seal 134.

The bearing 132 is a typical ball bearing with a plurality of balls rolling between the inner and outer rings. The inner ring of the bearing 132, which is coupled and fixed on the outer circumference of the main shaft 111, supports the outer peripheral surface of the main shaft 111. It is provided to rotate with the main shaft 111, and the outer ring of the bearing 132 is supported in contact with the inner surface of the gearbox cover 130.

The bearing fixing member 133 is a ring-shaped sealing member provided with an O-ring 136 interposed on the inner peripheral surface in contact with the main shaft 111 and the outer peripheral surface in contact with the inner surface of the gearbox cover 130, and a support plate ( Bolts for fastening the support plate 131 are fastened to the outer surface opposite to 131).

The group seal 134 is a ring-shaped sealing material whose cross-section is formed in the shape of an "ㅗ" shape, and the partition wall protruding vertically from its center is located between the bearing fixing member 133 and the group seal support member 135 for sealing. It is provided. This group seal 134 is also provided with an O-ring 136 interposed on one surface in contact with the bearing fixing member 133 and the group seal support member 135 to be sealed.

Therefore, the bearing 132 provided between the gearbox cover 130 and the main shaft 111 is not only firmly kept airtight by the group seal 134 and the group seal support member 135, but also the bearing fixing member 133. ) and the support plate 131, so that the position can be maintained in the correct position.

Meanwhile, along with the

knife shafts

150 and 150a that are expanded as described above, the back plate and the door panel are also provided to be expanded (extended) as shown in FIGS. 1 and 8.

For this purpose, a central light plate 160 is fixedly provided on the upper part of the gear box 110, a central door panel 180 is hingedly provided at the rear end of the central light plate 160, and both sides of the central light plate 160 Each part is provided with a side light panel 170 that is slidably coupled to expand or contract from the central light panel 160, and a side door panel 190 is hinged to the rear end of the side light panel 170 to form a side light panel 170. It is provided to move as shown, and hydraulic means is provided to expand or contract the side back panel 170 by sliding it on the central back panel 160.

The central light plate 160 protrudes from the upper part of the gearbox 110 to both sides and is provided in a covered state to cover the gearbox 110, and the side light plates 170 are located on both sides of the central light plate 160 in the axial direction ( It is provided to be able to slide in the longitudinal direction. These side lights 170 are provided to move simultaneously on both sides of the central light plate 160 by hydraulic means, and when the side light plates 170 are reduced, the side lights 170 are inserted into the lower part of the central light plate 160 and overlap. It is provided in ready-made condition.

In addition, the hydraulic means for moving the side lights 170 from the central light plate 160 are respectively fixed to the slide pipe 161 fixed to the central light plate 160 and both side lights 170, while the slide pipes ( A plurality of slide main pipes 171 are provided to enter and exit 161 and are formed with a port 171a through which hydraulic pressure enters and exits on one side, and are fixed in a state penetrating the slide main pipe 161, while both ends are connected to both slide main pipes ( 171), and includes a connecting rod 173 that is provided to be moved and has

ports

173a and 173b through which hydraulic pressure enters and exits, respectively, on both sides, and hydraulic pressure is supplied to the port 171a of the slide pipe 171 on one side. As it is supplied, the connecting rod 173 and both slide tubes 171 are provided to be extended and expanded.

The slide main tube 161 is a hollow tube and is installed on the upper surface of the central back panel 160 in the longitudinal direction of the central back panel 160, that is, in the left and right directions. The corresponding slide main tube 171 is also a hollow tube and the side back panel 170 ) is installed on the upper surface of the side light panel 170 in the left and right directions. This slide main tube 171 is provided with an outer diameter that can be inserted into and out of the slide main tube 161.

In addition, one port (171a) through which hydraulic pressure enters and exits is formed in the slide pipe (171) on one side of the two slide pipes, as shown in FIG. 9, and inside the slide pipe (171) on one side where the port (171a) is located, A stopper 172 is formed to protrude in contact with the connecting rod 173 to stop movement between the slide tube 171 and the connecting rod 173.

At this time, the port 171a of the slide main tube 171 is provided at a position corresponding to the distal end of the stopper 172, so that when the slide main tube 171 and the connecting rod 173 are reduced and moved, the connecting rod 173 is connected to the stopper 172. Because it comes into contact with, the connecting rod 173 does not pass through the port 171a of the slide pipe 171.

Meanwhile, the connecting rod 173 is also provided as a hollow tube with an empty interior, and pistons 174 closing the openings of the connecting rod 173 are fixed to each other at both ends, and both pistons 174 have both slides. It is provided to be moved while being inserted into each main pipe 171.

In addition, first and

second ports

173a and 173b through which hydraulic pressure enters and exits are formed on the connecting rod 173 in front of the piston 174, respectively. Accordingly, when hydraulic pressure is supplied to the first port 173a (the left port with respect to FIG. 9), both slide tubes 171 on both sides of the connecting rod 173 are moved toward the center and reduced, and the second port 173b ) When hydraulic pressure is supplied to (right port in Figure 9), both slide pipes 171 are drawn outward from both sides of the connecting rod 173 and expanded.

The hydraulic means operated in this way is provided so that the slide pipes 171 on both sides move simultaneously on one connecting rod 173 provided through the slide pipe 161, thereby simplifying the structure of the hydraulic means and providing a central back plate ( In 160), both side lights 170 are moved simultaneously, making it possible to precisely control the expansion or contraction operation.

In addition, the

back panels

160 and 170 as described above are provided with doors that cover and cover the rear of the rotator 100, and at the rear end of the central back panel 160, the central door panel 180 is positioned at right angles downward. It is hinged so that it can be rotated, and the side door panel 190 is provided at the rear end of the side light panel 170 by being hinged so that it can be rotated in a downward orthogonal state.

As such, the central door panel 180 and the side door panel 190 are moved together with the

back panel

160 and 170 to expand or contract, respectively, and both side door panels 190 are inserted into the central door panel 180 to allow entry and exit. It is provided. Accordingly, the

door panels

180 and 190, like the upper central back panel 160 and the side back panel 170, are provided to be expanded or contracted by adjusting their length.

Meanwhile, the side back panel 170, which is moved from the central back panel 160 by hydraulic means, is provided to move simultaneously with the movable knife axis 150.

For this purpose, the side light plate 170 is provided with a connecting plate 175 that connects the side light plate 170 to the outer end of the movable knife axis 150, and the side light plate 170 and the movable knife shaft 150 are connected by this connecting plate 175. The knife axis 150 is integrated and moves simultaneously to expand or contract.

This connection plate 175 is fixed to the side light plate 170, and the movable knife axis 150 is rotatably coupled to the connection plate 175.

In this way, if the coupling structure between the movable knife shaft 150 and the connection plate 175 is explained in detail, as shown in FIGS. 5 and 7, the outer end of the movable knife shaft 150 has the inside of the movable knife shaft 150. A finishing end block 154 is provided, and the connection plate 175 is provided with a bearing housing 176 that is sealed and coupled to the end block 154 protruding from the movable knife shaft 150. The bearing housing 176 and A bearing 177 is provided between the end blocks 154 to allow the end block 154 to rotate with the movable knife axis 150, and the bearing 177 and the end block 154 are exposed in the bearing housing 176. A cap nut 179 is provided coupled with a work tool 179a that can supply lubricant to the bearing 177 while blocking it.

The end block 154 is inserted into the outer end of the movable knife shaft 150 and has a finishing portion 154a that closes the opening of the movable knife shaft 150, and is formed to protrude from the finishing portion 154a to form an outer end of the movable knife shaft 150. It includes a protrusion 154b provided to protrude.

The finishing portion 154a of the end block 154 is fixed by welding while inserted into the movable knife shaft 150, and the protrusion 154b is provided to protrude to the outside of the movable knife shaft 150. The protrusion 154b A sealing groove 155 for sealing is formed between the and the finishing portion 154a and is recessed toward the finishing portion 154a.

This sealing groove 155 is provided with a group seal 156. One end of the group seal 156 is inserted into the sealing groove 155, and the other end is connected to the bearing housing 176 and the end block 154. It is provided by being inserted between the protrusions 154b.

This group seal 156 is a ring-shaped sealing material whose cross-section is formed in a "ㅗ" shape, and the partition wall protruding vertically from the center is between the finishing portion 154a of the end block 154 and the bearing housing 176. It is located and sealed.

In addition, O-rings 157 are provided on both sides of the center of the group seal 156 to contact and seal the finish portion 154a of the end block 154 and the bearing housing 176, respectively.

In addition, the bearing housing 176 is formed of a hollow tube with its interior penetrated, and the inside of the bearing housing 176 is stepped so that one end coupled to the finishing portion 154a of the end block 154 has a narrowing inner diameter. It is formed, and a bearing 177 is provided in contact with its step portion 176a.

At this time, the bearing 177 is a normal ball bearing with a plurality of balls rolling between the inner ring and the outer ring. The inner ring of the bearing 177 is fixed to the outer peripheral surface of the protrusion 154b of the end block 154, and the bearing ( The outer ring of 177) is inserted and fixed to the inner peripheral surface of the bearing housing 176, so that the end block 154 is rotatable within the bearing housing 176 by the bearing 177.

This bearing 177 is provided to be fixed in position by a lock nut 178 composed of a plurality of nuts each fastened to the protrusion 154b of the end block 154.

The cap nut 179 is coupled to the outer end of the bearing housing 176 to block exposure of the bearing 177 and the lock nut 178 within the bearing housing 176.

At this time, a plurality of work tools 179a are formed through the surface of the cap nut 179, that is, the outer surface, and the work tools 179a formed in this way can be combined with tools for mounting and detaching the cap nut 179. On the other hand, lubricant may be injected and supplied to the bearing 177 through the work tool 179a.

Meanwhile, between the above-mentioned mounting box 126 and the rotavator 100, a plurality of shock absorbers 140 are provided on both sides to cushion the rolling of the rotavator 100.

As shown in FIG. 4, the shock absorber 140 includes a cylinder body 140a on which hydraulic pressure acts, and a rod 140b provided to be inserted and exited 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 part 126b of the mounting box 126, and the tip (upper end) of the rod 140b that enters and exits the upper end of the cylinder body 140a is a gearbox. It is hinged to the slide pipe 161 of (110).

Therefore, when both ends of the rotator 100 are rolled obliquely in the mounting box 126, the rods 140b on both sides, which are obliquely rolled like the rotator 100, enter and exit each cylinder body 140a. It acts as a buffer.

Meanwhile, in this embodiment, in constructing the shock absorber 140, the cylinder body 140a is positioned at the bottom and coupled to the bottom of the extension portion 126b of the mounting box 126, and the rod 140b is positioned at the top. A structure coupled to the slide tube 161 of the gearbox 110 is illustrated, which is to prevent damage to the rod 140b by foreign substances flying upward during farmland tillage work, and the rod 140b is installed in the cylinder body ( It is located at the upper part of 140a), and damage to the rod 140b is prevented, thereby preventing malfunction of the shock absorber 140.

In addition, the rear side of the extension part 126b of the mounting box 126 (the side facing the rotavator 100) blocks foreign substances splashing toward the shock absorber 140 during the tilling operation by the rotavator 100, thereby protecting the rear surface from foreign substances. A guard 141 is provided to protect the shock absorber 140.

At this time, the guard 141 is not only formed as a plate having an area that sufficiently covers the rear of the shock absorber 140, but may also be provided at an angle corresponding to the inclination of the shock absorber 140. In this way, if the guard 141 is provided at an angle corresponding 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 the shock absorber 140 can be protected more safely. There will be.

Additionally, a connecting link 142 is provided between the extension portion 126b of the mounting box 126 and the central back plate 160 to prevent the rotator 100 from rocking back and forth when rolling.

As shown in FIG. 4, one end of the connecting link 142 is hinged to the extension portion 126b of the mounting box 126, and the other end is hinged to the upper surface of the central back plate 160. In addition, a bent portion 142a is formed on one side of the connecting link 142 to avoid interference with the slide tube 161 provided on the upper surface of the central light plate 160.

As a result, when both sides of the rotavator 100 are rolled obliquely in the diagonal direction in the detachable part 200 by the connecting link 142, the rotation (swing) of the rotavator 100 in the forward and backward directions is blocked, thereby cultivating farmland. Both sides of the rotavator 100 are rolled in place at an incline only in the vertical direction according to the smoothness of the farmland, so that all farmland can be tilled without exception.

The rotavator 100 according to the present invention as described above receives the power of the tractor through the power transmission unit 120 coupled with the power transmission unit 230 of the tractor.

As shown in FIG. 2, the power transmitted in this way is input to the input shaft 121 of the power transmission unit 120 formed on the upper part of the gearbox 110, and the input power is connected to the input shaft 121 and the first sprocket wheel ( 124), 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.

In this way, the power output to the main axis 111 rotates the main axis 111, and the rotation of the main axis 111 causes the knife axis 150 (150a), which is coupled to the shape of the main axis 111, to rotate simultaneously, and the knife axis 150 As (150a) rotates, the tillage blades (151) fixed thereto are rotated as one unit to excavate and till the farmland.

In particular, the length, or width, of the tillage blade 151 for tilling farmland can be expanded or reduced depending on the performance of the tractor.

That is, when the performance of the tractor to which the rotavator 100 is connected is high output, the movable knife axis 150 is pulled out and expanded from the main axis 111 as shown in FIG. 10, and at the same time, the side light plate 170 connected to the movable knife axis 150 ) is also drawn out and expanded from the central back plate 160.

This expansion of the movable knife shaft 150 and the side light plate 170 is achieved by hydraulic means. As shown in the lower drawing of FIG. 9, the port 171a of the slide main pipe 171 provided on one side light plate 170 When hydraulic pressure is supplied, one side of the slide main pipe 171 is pulled out from the connecting rod 173 and expanded, and in this process, the piston 174 of the connecting rod 173 and the tip of the slide main pipe 171 are supplied. Hydraulic pressure flows into the second port (173b) of the connecting rod 173, and the hydraulic pressure flowing into the second port (173b) is discharged to the first port (173a) of the connecting rod 173 on the opposite side, and the other side slides. It flows into the main pipe 171 and pushes and withdraws the other slide main pipe 171 outward from the connecting rod 173, thereby forming the side back plate 170 and the movable knife axis 150 on the central back plate 160 and the main shaft 111, respectively. It is drawn out and expanded as shown in Figure 10.

Conversely, as shown in the upper drawing of FIG. 9, when hydraulic pressure is discharged through the port 171a of one side slide main pipe 171, one side slide main pipe 171 is moved toward the connecting rod 173 by vacuum pressure, and this In the process, the hydraulic pressure in the connecting rod 173 is discharged into the space between the piston 174 of the connecting rod 173 and the tip of the slide pipe 171 through the second port 173b, and at the same time, the connecting rod 173 As the hydraulic pressure in the other slide tube 171 flows into the first port (173a) due to the vacuum pressure acting inside, the other slide tube 171 also moves to the connecting rod 173 side, and the side back plate 170 and the movable type that were drawn out. The knife axis 150 is retracted into the central back plate 160 and the main axis 111, respectively, and is reduced as shown in FIG. 11.

In this way, as the length of the knife shaft 150 (150a) is extended or reduced, the work area of the rotavator 100 can be expanded or reduced according to the performance of the agricultural tractor to enable quick and efficient tillage work, and the knife shaft 150 As the length of (150a) is adjusted, the lengths of the

back plates

160 and 170 are simultaneously adjusted.

In addition, as the

back panels

160 and 170 expand or contract, the

door panels

180 and 190 hinged to each

back panel

160 and 170 are also moved and expanded or contracted at the same time.

As a result, the length between the central spine 160 and the side spine 170 is adjusted according to the length of the knife shaft 150 (150a) that is extended or contracted from the main shaft 111, thereby preventing soil from splashing upward or backward during tillage. You can do it.

Meanwhile, the rotavator 100 as described above can cultivate farmland with both left and right sides remaining horizontal around the gearbox 110 in the center.

In addition, the rotavator 100 is provided so that the gearbox 110 provided therein is rolled so that both left and right sides are inclined up and down as much as the length of the long hole 129b in the mounting box 126 mounted on the detachable part 200 of the tractor. As a result, the rotavator 100 remains level with the farmland regardless of the smoothness of the farmland, making it possible to evenly till the farmland at a constant depth.

On the other hand, since the rotator 100 rolled in this way is prevented from rocking back and forth by the connecting rod 142, the rotavator 100 for cultivating farmland rolls in an exact up-and-down direction without any back-and-forth rocking on both sides. All farmland can be cultivated without exception.

Although the present invention has been described in detail through specific examples, this is for the purpose of specifically explaining the present invention, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

(Explanation of symbols)

100: Rotator 110: Gearbox

110a: Plow protrusion 111: Main shaft

112: second sprocket wheel 120: power transmission unit

121: input shaft 122: bearing

123: Hinge bushing 124: First sprocket wheel

125: Chain 126: Mounting box

126a: cover part 126b: extension part

127: hinge plate 127a: coupling hole

128: front hinge plate 128a: through hole

129: rear hinge plate 129a: stop hole

129b: Long hole 130: Gearbox cover

131: Support plate 132: Bearing

133: Bearing fixing member 134: Group seal

135: Group seal support member 136: O-ring

140: Shock absorber 140a: Cylinder body

140b: Piston rod 141: Guard

142: Connecting link 142a: Bend portion

150,150a: Blade axis 151: Tillage blade

152: Lug bar 153: Foreign matter prevention bar

154: End block 154a: Closing part

154b: Protrusion 155: Sealing groove

156: Group seal 157: O-ring

160: Central back plate 161: Slide rental

170: side back plate 171: slide main tube

171a: Port 172: Stopper

173: connecting

rod

173a, 173b: port

174: piston 175: connection plate

176: Bearing housing 176a: Step portion

176b: O-ring 177: Bearing

178: lock nut 179: cap nut

179a: Work tool 180: Central door panel

190: side door 200: detachable part

210: Frame 211: Upper hook

220: Slider 221: Lower hook

230: Power transmission unit

Claims

It is an agricultural work machine that is mounted on a detachable part of an agricultural tractor and is capable of transmitting power to the agricultural tractor while being towed,

The agricultural implement is equipped with a mounting box hinged at its center, and a detachable part is fixedly connected to the mounting box, so that both sides of the implement are rolled so that they can be inclined diagonally based on the hinge with the mounting box,

An agricultural implement equipped with a connecting link between the agricultural implement and the mounting box to prevent the agricultural implement from moving back and forth when it is rolled.
In claim 1,

The mounting box has a protruding front hinge plate and a rear hinge plate. The input shaft of the implement through which the power of the agricultural tractor is input is coupled to the front hinge plate so that it can rotate relative to the other. The rear hinge plate is attached to the hinge plate of the implement. A long hole through which the fixing pin is movably coupled is provided so that the work machine can roll in the mounting box, and the rear hinge plate has a stop hole that blocks the rolling of the work machine by combining a fixing pin that penetrates the hinge plate of the work machine. Agricultural work equipment equipped with this.
In claim 1,

The agricultural implement is equipped with a main shaft that is rotated by receiving power from the tractor at its center,

On both sides of the main shaft, there is a knife shaft that is coupled to move in the axial direction and is pulled out from the main shaft to expand or retracted and contracted, while rotating along with the main shaft to perform a tilling operation,

Hydraulic means are provided to move the knife axis from the main axis,

An agricultural work tool that is provided with a back plate that covers the main axis and the knife axis by moving with the knife axis and expanding or contracting by hydraulic means for moving the knife axis.
In claim 3,

The back panel includes a central back panel that is provided on the upper part of the main axis and covers the main axis, and a side back board that is movably coupled to each side of the central back board and is provided to expand or contract from the central back board,

An agricultural work tool equipped with a side light panel that moves along with the knife axis by hydraulic means.
In claim 3 or claim 4,

An agricultural work machine further provided with a connecting plate on the side light panel that connects the side light panel to the knife axis so that the side light panel and the knife axis can be moved simultaneously by hydraulic means.
In claim 5,

The connecting plate is fixed to the side back plate, while the knife axis is rotatable on the connecting plate,

The knife shaft is provided with an end block that finishes the inside of the knife shaft,

The connection plate is equipped with a bearing housing that is sealed and coupled to the end block protruding from the knife axis.

A bearing is provided between the bearing housing and the end block to allow the end block to rotate with the knife axis,

An agricultural work tool equipped with a bearing housing coupled with a cap nut that blocks exposure of the bearing and end block and has a work tool that can supply lubricant to the bearing.
In claim 4,

The hydraulic means includes a slide tube fixed to the center back plate;

A plurality of slide pipes are each fixed to both side lights and are provided to enter and exit the slide pipe, and a port through which hydraulic pressure enters and exits is formed on one side;

It includes a connecting rod that is fixed in a state of penetrating the slide pipe, and has both ends inserted into and moved in both slide pipes, and has ports through which hydraulic pressure enters and exits, respectively, on both sides,

An agricultural work tool in which the connecting rod and both slide pipes are extended and expanded as hydraulic pressure is supplied to the port of the slide pipe on one side.
In claim 3 or claim 4,

The knife axis includes a fixed knife axis fixed to the main axis, and a movable knife axis movable on the main axis,

An agricultural work tool provided between a fixed knife axis and a movable knife axis with a foreign material wrapping prevention bar whose length expands or contracts as the movable knife axis moves.
In claim 8,

An agricultural work tool equipped with a lug bar on the fixed knife shaft between the two foreign material prevention bars that rotates along with the shaft to remove foreign materials and prevent foreign materials from becoming entangled in the shaft.
In claim 1,

An agricultural implement equipped with a shock absorber between the agricultural implement and the mounting box to cushion the implement rolling in the mounting box.