KR102650285B1 - Connecting unit for connecting electric platform - Google Patents

Abstract

The present invention relates to a work machine connection unit that enables the connected use of agricultural machinery work tools, including weeders, etc., an agricultural machine work machine in which horizontally arranged connection fixing bars are located at the top and bottom, and a connecting bracket that is spaced and fixed is located in the center of the rear end. A work machine connection unit used to connect a power platform and an electric platform, and provided to be driven by a driving operation on the electric platform, comprising: a pair of fixing brackets positioned and fixedly installed at the center of the front end of the electric platform and arranged at intervals on the left and right sides; Four connection links, the rear end of which is hinged and supported on the fixing bracket so as to be rotatable in the up and down directions, have a four-way spacing structure to correspond to each other; A support bracket on which the front ends of the four connection links are supported and coupled with a hinge coupling structure; It is a vertical plate that extends and protrudes from the front end surface of the support bracket in the direction intersecting it, is formed as one piece, and is spaced on the left and right sides, and is a pair of work tool hangers equipped with a locking fixture having a U-shaped mounting groove with an upper open structure at the upper and lower ends of the front end. mounting plate; A horizontal plate extending and protruding from the front end surface of the support bracket and integrally formed, the connection support plate connecting and supporting the work machine holder plates disposed at intervals on the left and right sides; A locking and rotating hook member that is fixedly coupled to the upper surface of the connection support plate and is located inside the upper engaging fixture on the work machine holding plate side having a pair structure and provides a holding force by clamping in a locking method using a corresponding arrangement and elastic rotation structure. ; a locking release lever connected to forcibly release the locking force caused by the locking fastening on the locking pivoting hook member side; A cylinder located inside the four connecting links, the cylinder body of which is supported and coupled to the front end of the transport vehicle body, and the end of the cylinder rod whose length is variable on the cylinder body is supported and coupled to the support bracket.
According to the present invention, by organically combining one cylinder, a locking hook with a locking method using an elastic rotation structure, and a lever for unlocking, it is possible to simply connect and use agricultural machinery such as a weeder, and agricultural machinery such as a weeder. Ease, convenience, and efficiency can be pursued through connection use.

Description

Work machine connection unit {CONNECTING UNIT FOR CONNECTING ELECTRIC PLATFORM}

The present invention relates to a work machine connection unit for connecting and using agricultural machinery, such as a weeder, to an electric platform. More specifically, it allows simple and stable connection of agricultural machinery, such as a weeder, and the work machine in a connected and fixed state. It relates to a work machine connection unit that can be lifted and moved or changed.

Electric platforms are generally used in farms to transport cargo or other loads, and can be divided into manual and automatic types. Most conventional electric platforms are manufactured to perform only the transport function.

However, recently, in addition to the transportation function, a configuration including a connection device for connecting and using agricultural machinery such as weeders has been incorporated.

On the other hand, an example of a tractor that is a powered mobile vehicle that can be used in connection with agricultural machinery such as a conventional weeder is one of the most widely used agricultural machines in the agricultural field.

In addition, a tractor is a special agricultural vehicle that can be used by connecting various agricultural machinery, including weeders, etc., and is designed to perform work in a running or stationary state by supplying power, and is equipped with a three-point connection device to connect mowers, etc. It is equipped to connect and use working machines.

However, in the related art, it is used to connect working machines for agricultural machinery such as weeders, and most of the connecting devices mounted on agricultural vehicles or tractors are used to connect the first cylinder used to connect working machines such as weeders and the height of the connected working machine. It has a configuration that includes a second cylinder used for adjustment, and not only are these two cylinders essentially used, but they also show structural complexity, so improvement is required.

Meanwhile, with regard to the prior art literature, Korean Patent Publication No. 10-2021-0091843 (hereinafter referred to as 'Patent Document 1') states, "A main base unit mounted on the rear of the tractor, and a main base unit that can be coupled to the main base unit. A device including a working machine, wherein the main body includes a main body having a bent portion, an upper body coupled to an upper side of the main body and coupled to an end of a hydraulic cylinder connected to a tractor, and a lower side of the main body coupled to the It includes a lower body into which a portion of the lower coupling rod of the working unit is inserted and coupled, wherein the working unit includes an upper coupling bar disposed on the upper side, a lower coupling bar disposed on a lower side of the upper coupling bar, and the upper coupling bar and the lower coupling bar. This can be referred to as it discloses “a work machine connecting device including a support body that connects.”

In addition, Domestic Patent No. 10-1828008 (hereinafter referred to as 'Patent Document 2') states, "A front body through which an input shaft with an input yoke is installed, and a rear body through which an output shaft with an output yoke is installed. In the connection device of the agricultural machinery work machine, which is formed by connecting the upper and lower central parts of the joint to be rotated via a center pin, and each of the input and output yokes and the connection yoke via a cross bearing, the cross bearing The length of the connection yoke fastening axis fastened to the connection yoke is formed to be longer than the length of the input and output yoke fastening axis fastened to each of the input and output yokes, and the outer diameter of the tip of each of the input and output yokes is formed smaller than the inner diameter of the inlet of the connection yoke. When each of the input and output yokes is rotated, a portion of the tip of each input and output yoke is accommodated in the inner entrance of the connection yoke and is easily rotated without friction while forming a large rotation angle. ", so you can refer to it.

However, the technical configuration of Patent Document 1 and Patent Document 2 described above can be said to be different from the technology of the present invention proposed below.

Republic of Korea Patent Publication No. 10-2021-0091843 Republic of Korea Patent Publication No. 10-1828008

The present invention was developed in consideration of the above-mentioned conventional problems and solves the above-mentioned problems. It allows simple and stable connection of agricultural machinery such as a weeder, and allows the agricultural machinery to be moved and changed by lifting the agricultural machinery in a fixed connection state. The purpose is to provide a connection unit.

The present invention organically combines one cylinder, a connecting link, a locking hook with a locking method using an elastic rotation structure, and a lever for unlocking to simply connect agricultural machinery such as a weeder, but also improves the ease of use of the connection. The purpose is to provide a work machine connection unit that pursues convenience and efficiency.

The work machine connection unit to achieve the above purpose is used to connect an agricultural machine work tool and an electric platform with horizontally arranged connection fixing bars located at the top and bottom and a spaced and fixed connection bracket positioned at the center of the rear end. A work machine connection unit provided to be driven by a driving operation, comprising: a pair of fixing brackets positioned and fixed at the center of the front end of the electric platform and arranged at intervals on the left and right sides; Four connection links, the rear end of which is hinged on the fixing bracket and rotatably supported in the up and down directions, are arranged at four-way intervals to correspond to each other; A support bracket on which the front ends of the four connection links are supported and coupled with a hinge coupling structure; It is a vertical plate that extends and protrudes from the front end of the support bracket in the direction intersecting it, is formed as one piece, and is spaced on the left and right, and is a pair of work tool hangers equipped with a locking fixture having a U-shaped mounting groove with an upper open structure at the upper and lower ends of the front end. mounting plate; A horizontal plate extending and protruding from the front end surface of the support bracket and integrally formed, the connection support plate connecting and supporting the work machine holder plates disposed at intervals on the left and right sides; A locking and rotating hook member that is fixedly coupled to the upper surface of the connection support plate and is located inside the upper engaging fixture on the work machine holding plate side having a pair structure and provides a holding force by clamping in a locking method using a corresponding arrangement and elastic rotation structure. ; a locking release lever connected to forcibly release the locking force caused by the locking fastening on the locking pivoting hook member side; A cylinder located inside the four connection links, the cylinder body of which is supported and coupled to the front end of the transport vehicle body, and the end of the cylinder rod whose length is variable on the cylinder body is supported and coupled to the support bracket.

Here, the locking and rotating hook member includes a fixing plate portion fixedly coupled to the upper surface of the connection support plate; a locking part that extends upward from the upper surface of the fixing plate and is integrally provided, and has a U-shaped mounting groove with an open upper structure; It is located on the inner surface of the locking part, but the lower part is rotatably supported and coupled by an elastic hinge, and has a curved body having a hook-type ring at the upper end to provide locking force by locking. It includes a locking hook portion, and has a rotation limiting protrusion protruding from one side of the inner surface of the locking portion, and a slit opening for restricting rotation is formed on the locking hook portion, and the rotation limiting protrusion is formed within the slit opening. By inserting and arranging it, it can be configured to limit the rotation angle of the locking hook side.

Here, the unlocking lever is fixedly coupled to one upper side of the locking hook portion and can be configured to forcibly release the locking state caused by clamping on the work machine side when the unlocking lever is pulled toward the rear.

According to the present invention, agricultural machinery, such as a weeder, can be connected and used by fastening and fixing it to an electric platform with a simple operation operation, and the work of fastening and releasing the fastener, as well as adjusting the height of the connected work machine, can be solved with just one cylinder drive. useful effects can be achieved.

According to the present invention, by organically combining one cylinder, a locking hook with a locking method using an elastic rotation structure, and a lever for unlocking, it is possible to simply connect and use agricultural machinery such as a weeder, and agricultural machinery such as a weeder. Useful effects can be achieved by pursuing ease, convenience, and efficiency through connection use.

Figure 1 is a perspective view showing a state in which the work machine connection unit according to an embodiment of the present invention is mounted on an electric platform and the work machine is connected.
Figure 2 is a perspective view showing a work machine connection unit according to an embodiment of the present invention, showing it mounted on an electric platform.
Figure 3 is a perspective view showing the work machine connection unit according to an embodiment of the present invention from different angles, showing the work machine connection unit mounted on an electric platform.
Figure 4 is a perspective view showing a work machine connection unit and a corresponding work machine side connection bracket according to an embodiment of the present invention.
Figure 5 is a perspective view showing a work machine connection unit and a corresponding work machine side connection bracket from different angles according to an embodiment of the present invention.
Figure 6 is a side view showing a state in which the work machine connection unit according to an embodiment of the present invention is entered into the work machine.
Figure 7 is a side view showing a state in which a work machine is connected and fixed through a work machine connection unit according to an embodiment of the present invention.
Figures 8 and 9 are diagrams showing a state in which the work machine connection unit according to an embodiment of the present invention is mounted on an electric platform.
Figure 10 is a diagram showing a state in which a work machine is lifted by driving a cylinder on the work machine connection unit side according to an embodiment of the present invention.

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.

Among the terms used in the present invention, the terms such as leading end and rear end are based on the configuration shown to improve understanding, and the terms may be modified or changed depending on the direction.

Figures 1 to 10 of the attached drawings are views showing a work machine connection unit according to the present invention.

The work machine connection unit 200 according to an embodiment of the present invention is fixedly installed and mounted on the electric platform 100, and as shown in FIGS. 1 to 10, it connects and fixes the work machine 1 of agricultural machinery such as a weeder. It is used.

The work machine connection unit 200 of the present invention is mounted on the front end of the electric platform 100 and is provided to face the connection bracket 2 mounted on the rear end of the work machine 1.

At this time, the work machine (1) has a connection bracket (2) located at the center of the rear end surface, and a connection fixing bar (3) arranged horizontally on the connection bracket (2) is fixedly coupled, and the connection fixing bar ( 3) are located at the top and bottom and spaced apart.

The electric platform 100 is connected and movable so that the operator can sit and operate using power as well as adjust the drive of the work machine connection unit 200.

The electric platform 100 includes a car body 110, a track-type wheel part 120 with a caterpillar structure so that it is located at the lower part of the car body 110 and on the ground and can be moved, and the car body part 110. A driver's seat 130 formed on (110), a driving control unit 140 installed on the car body 110 and located at the left and right front ends of the driver's seat 130, and the car body 110 It is installed on the top and includes a power unit 150 for generating and supplying power.

At this time, the power unit 150 includes an engine power unit and a hydraulic supply unit.

The work machine connection unit 200, which is mounted at the center of the front end of the car body 110 on the electric platform 100 side, connects and fixes the work machine 1 for agricultural machinery through drive adjustment of one cylinder, and also connects and fixes the work machine 1 connected to the work machine 1. ) is equipped to adjust the height, such as lifting it from the ground.

Specifically, the work machine connection unit 200 according to the present invention includes a fixing bracket 210, a connection link 220, a support bracket 230, a work machine locking support plate 240, a connection support plate 250, and a locking and rotating hook member ( 260), an unlocking lever 270, and a cylinder 280.

The fixing bracket 210 is located at the center of the front end of the electric platform 100, is spaced and fixedly coupled to the left and right sides, and is provided in a pair structure.

The connection link 220 is hinged at its rear end on the fixing bracket 210 and is supported so as to be rotatable in the up and down directions. It consists of four connections having a four-way spacing structure to correspond to each other. It is made up of links.

The connection link 220 is provided in a rod-shaped structure with a certain length.

The support bracket 230 is a component in which the front ends of the four connection links 220 are supported and coupled with a hinge coupling structure.

The work machine holding plate 240 is a vertical plate that protrudes and extends in a direction intersecting the front end surface of the support bracket 230, is formed as one piece, and is spaced on the left and right sides. It is located at the top and bottom of the front end and is U-shaped with an open top structure. A locking fixture 241 having a mounting groove 242 is provided.

The work machine locking support plate 240 is provided in a pair structure.

The connection support plate 250 is a horizontal plate that extends and protrudes from the front end surface of the support bracket 230 and is integrally formed, and is a component that connects and supports the work machine holder plates 240 disposed at intervals on the left and right sides.

The locking and rotating hook member 260 is fixedly coupled to the upper surface of the connection support plate 250, and is located on the inside (inward direction) of the upper locking fixture 241 on the side of the work machine locking plate 240 having a pair structure. It is provided to provide locking force by clamping with a locking fastening method based on the arrangement and elastic rotation structure.

At this time, the locking and rotating hook member 260 is integrally provided with a fixing plate portion 261 fixedly coupled to the upper surface of the connection support plate 250 and protruding upwardly from the upper surface of the fixing plate portion 261 and opening at the top. A locking part 262 having a U-shaped mounting groove in the structure is located on the inner surface of the locking part 262, but the lower part is constantly exerted in one direction by an elastic hinge 267, and elastic tension is constantly applied in one direction and external pressure is not applied. It is supported and coupled so that it can be rotated and includes a locking hook portion 263 of a curved body having a hook-shaped ring 264 at the upper end to provide a locking force by locking.

Here, a rotation limiting protrusion 265 is provided protruding on one side of the inner surface (inner surface) of the locking part 262, and a slit opening of a long hole structure for limiting rotation is provided on the locking hook part 263. (266) is formed, and a rotation limiting protrusion (265) is inserted and disposed within the slit opening (266) to limit the rotation angle when the lock hook portion (263) rotates.

The unlocking lever 270 is a component provided to forcibly release the locking force caused by the locking fastening on the locking pivoting hook member 260 side.

At this time, the unlocking lever 270 is fixedly coupled to one upper side of the locking hook portion 263 and is configured to forcibly release the locking state caused by clamping on the side of the work machine 1 when the unlocking lever is pulled toward the rear.

The cylinder 280 is located inside the four connecting links 220, and the cylinder body 281 is support-coupled to the front end of the transport vehicle body 100 and includes a cylinder rod 282 whose length is variable on the cylinder body 281. The end portion is supported and coupled to the support bracket 230.

Here, the cylinder 280 is provided to operate the cylinder rod 282 by receiving hydraulic pressure from the hydraulic supply unit of the power unit 150, and the body is integrally coupled through the forward and backward movement of the cylinder rod 282. The support bracket 230 and the work machine locking support plate 240 can be moved up and down.

That is, by controlling the driving of the cylinder 280 on the work machine connection unit 200, the work machine 1 for agricultural machinery can be connected and fixed, and in addition, the work machine 1 can be lifted while the work machine 1 is connected and fixed. The back height can be adjusted.

Accordingly, the agricultural work, etc. can be performed by connecting the work machine 1, such as a weeder, through the above-described work machine connection unit 200, and when the location in the field is changed, the work machine 1 can be moved while being lifted. It is possible to pursue ease and convenience as well as efficiency through the connected use of agricultural machinery such as weeders (1).

Meanwhile, the operational relationship for connecting the work machine 1 to the electric platform 100 through the work machine connection unit 200 according to the present invention consisting of the above-described configuration will be described as follows.

The driver sits on the driver's seat 130 on the electric platform 100 and operates the operation control unit 140, and controls the cylinder 280 on the work machine connection unit 200 side to advance the cylinder rod 282. By lowering the distal end of the connecting link 220, the support bracket 230 and the work machine latching plate 240 are lowered to have a U-shaped mounting groove 242 located at the upper and lower ends of the work machine latching plate 240. The locking fixture 241 and the locking and rotating hook member 260 corresponding thereto are positioned in the downward direction.

In this way, while the work machine connection unit 200 is driven and controlled, the electric platform 100 is moved to place the locking fixture 241 of the work machine holding plate 240 below the connection fixing bar 3 on the work machine 1 side. It enters so that the correspondingly arranged locking pivoting hook member 260 is positioned.

Next, the cylinder 280 on the work machine connection unit 200 side is driven and controlled to move the cylinder rod 282 backwards, thereby raising the tip of the connection link 220, so that the connection fixing bar 3 disposed up and down is used to hold the work machine. It is inserted and fixed into the mounting groove 242 of the locking fixture 241 on the side of the plate 240 and is simultaneously fastened to the locking pivoting hook member 260 to be locked by clamping.

To elaborate, the locking pivoting hook member 260 supports and supports the connection fixing bar 3 on the work machine 1 side through the U-shaped mounting groove of the locking fixing part 262, and at the same time, the hook of the locking hook part 263 The connection bar (3) is also fastened and locked through the type ring (264).

At this time, the locking pivoting hook member 260 rotates and opens due to external pressure when it contacts the connection fixing bar 3 by the elastic hinge support structure on the side of the locking hook portion 263, and then returns to its original state, forming a hook-type ring. (264) surrounds and locks the connection fixing bar (3).

Here, the locking hook portion 263 has a slit opening 266 of a long hole structure, and the rotation angle is limited by the rotation limiting protrusion 265 on the locking portion 262 side.

In this way, a work tool (1) such as a weeder can be simply connected to the electric platform 100 through the work machine connection unit 200, and the corresponding work using the work machine (1) can be performed along with the movement of the electric platform 100 (e.g. , weeding work, etc.) can be performed.

In addition, when the position of the work tool 1 is changed while connected and fixed in this way, the work tool 1 can be lifted and easily moved by controlling the driving of the cylinder 280, and the height can be adjusted as necessary.

Furthermore, when releasing the connection fixation state by locking the work machine connection unit 200 and the work machine (1), the lock state can be released by pulling the lock release lever 270 and rotating the lock hook portion 263. At this time, by retracting the cylinder rod 282 on the cylinder 280 side to lower the work machine holding plate 240 and the locking rotation hook member 260, they can be separated from the connection fixing bar 3 and the connection bracket ( The work machine connection unit 200 can be removed from 2).

The embodiments described above merely describe preferred embodiments of the present invention and are not extremely limited to these embodiments, and various modifications and variations may be made by those skilled in the art within the technical spirit and scope of the claims of the present invention. It will be said that this can be achieved, and it will be said that it falls within the scope of the technical rights of the present invention.

200: Work machine connection unit 210: Fixing bracket
220: Connecting link 230: Support bracket
240: Work machine locking support plate 241: Locking fixture
242: Mounting groove 250: Connection support plate
260: Locking pivoting hook member 261: Fixed plate portion
262: Locking part 263: Locking hook part
264: Hook-type ring 265: Rotation limiting protrusion
266: Slit opening 270: Unlock lever
280: cylinder

Claims (3)

A horizontally arranged connection fixing bar is located at the top and bottom to space and fix the connected bracket, which is used to connect an agricultural machine tool and an electric platform located at the center of the rear end, and is equipped to be driven by operation on the electric platform. In
A pair of fixing brackets positioned and fixedly installed at the center of the front end of the electric platform and arranged at intervals on the left and right sides;
Four connection links, the rear end of which is hinged and supported on the fixing bracket so as to be rotatable in the up and down directions, have a four-way spacing structure to correspond to each other;
A support bracket on which the front ends of the four connection links are supported and coupled with a hinge coupling structure;
It is a vertical plate that extends and protrudes from the front end surface of the support bracket in the direction intersecting it, is formed as one piece, and is spaced on the left and right sides, and is a pair of work tool hangers equipped with a locking fixture having a U-shaped mounting groove with an upper open structure at the upper and lower ends of the front end. mounting plate;
A horizontal plate extending and protruding from the front end surface of the support bracket and integrally formed, the connection support plate connecting and supporting the work machine holder plates disposed at intervals on the left and right sides;
A locking and rotating hook member that is fixedly coupled to the upper surface of the connection support plate and is located inside the upper engaging fixture on the work machine holding plate side having a pair structure and provides a holding force by clamping in a locking method using a corresponding arrangement and elastic rotation structure. ;
a locking release lever connected to forcibly release the locking force caused by the locking fastening on the locking pivoting hook member side;
A cylinder located inside the four connecting links, the cylinder body of which is supported and coupled to the front end of the transport vehicle body, and the end of the cylinder rod whose length is variable on the cylinder body is supported and coupled to a support bracket; A work machine connection unit comprising a.
According to clause 1,
The locking pivoting hook member,
A fixing plate portion fixedly coupled to the upper surface of the connection support plate;
a locking part that extends upward from the upper surface of the fixing plate and is integrally provided, and has a U-shaped mounting groove with an open upper structure;
It is located on the inner surface of the locking part, but the lower part is rotatably supported and coupled by an elastic hinge, and has a curved body having a hook-type ring at the upper end to provide locking force by locking. Locking hook part; Includes,
It is provided with a rotation limiting protrusion protruding from one side of the inner surface of the locking part,
A work machine connection unit characterized in that a slit opening for limiting rotation is formed on the locking hook portion, and the rotation angle on the locking hook side is limited by inserting and disposing a rotation limiting protrusion within the slit opening.
According to clause 2,
The unlocking lever is,
A work machine connection unit that is fixedly coupled to one upper side of the locking hook portion and configured to forcibly release the locking state caused by clamping on the work machine side when the lock release lever is pulled in the rear direction.

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