KR102597614B1 - Power transfer unit of agricultural machine and working machinery - Google Patents

Abstract

The present invention relates to a power transmission device for agricultural machinery and work equipment, and includes an input yoke connected to agricultural machinery, an output yoke connected to a work machine, a connection yoke connecting the input yoke and the output yoke, and a connection yoke between the input and output yokes and the connection yoke. It is a power transmission device for agricultural machinery and work equipment that includes a cross bearing that connects the input and output yokes and the connection yoke. The cross bearing is provided so that the two coupling axes respectively coupled to the input and output yokes and the connection yoke are offset from each other and are eccentric. Provides power transmission devices for agricultural machinery and work equipment.

Description

Power transfer unit of agricultural machine and working machinery}

The present invention relates to a power transmission device for agricultural machinery and work equipment. More specifically, the present invention relates to a power transmission device for agricultural machinery and work equipment. More specifically, the present invention relates to a power transmission device that is connected to and towed by agricultural machinery, such as a tractor, so that a work machine that is towed by agricultural machinery such as a tractor can not only stably receive power from the agricultural machinery but also be rotated at the maximum rotation angle from the agricultural machinery. It concerns the power transmission system of agricultural machinery and work equipment.

In general, when you want to transfer the power of agricultural machinery (tractors, cultivators, managers, etc.) to working machines (balers, compost spreaders, mowers, lawn mowers, etc.) to drive the working machines,

As disclosed in the attached drawing FIG. 1 (Korea Public Utility Model No. 20-2000-0018046, agricultural implement connection device), the power of the agricultural machinery is transmitted to the output shaft 12 installed on the implement through the input shaft 11, and the output shaft ( The power transmitted to 12) drives the work machine and performs the relevant work on the work machine.

At this time, a yoke 13 is installed at each end of the input shaft 11 and the output shaft 12 facing each other, and a connecting yoke 15 is provided between each yoke 13, and the connecting yoke 15 and Each yoke 13 is interconnected using a “+” shaped bearing 14, so that the power of the input shaft 11 is transmitted to the output shaft 12.

The interconnection relationship between the input shaft, output shaft, connecting yoke, yoke, and "+"-shaped bearing is explained with reference to Figure 2 (Korea Public Utility Model No. 20-2009-0007111, tractor work machine traction link device) as follows. same.

As shown in Figure 2, each spline joint (62, 62a) is link coupled to both sides of the double yoke universal joint (60) in which each cross bearing (61, 61a) is hinged on both sides, and a flange type bearing unit is formed. The power input/output spline shaft 64 is slidably coupled to (63, 63a) to transmit the power of the agricultural machine to the work machine through the power input/output spline shaft 64.

In addition, each cross bearing (61, 61a) has the same longitudinal/lateral axis length, and the inlet diameters on both sides of the double yoke universal joint (60) and the inlet diameters of each spline joint (62, 62a) are the same. Due to this, when each of the spline joints (62, 62a) is rotated via each of the cross bearings (61, 61a), the rotation angle cannot be rotated more than 50°, so it is difficult to change direction on a narrow farm road or to change the work angle at a work site. When working on these sharp corners, there was the cumbersome problem of not being able to turn smoothly and having to go forward/backward and change direction several times.

In addition, as the area of the unworked area at the corner with a large working angle increases, work efficiency decreases, and the unworked area requires separate work using manpower, causing waste of manpower.

Republic of Korea Public Utility Model No. 20-2000-0018046 Republic of Korea Public Utility Model No. 20-2009-0007111

Therefore, the present invention was developed to solve the problems of the prior art as described above. In connecting agricultural machinery and work equipment, the work machine towed by the agricultural machinery receives power stably from the agricultural machinery and operates, thereby maximizing rotation from the agricultural machinery. The purpose is to provide a power transmission device for agricultural machinery and work equipment that can be rotated at an angle.

The power transmission device for agricultural machinery and work equipment according to the present invention for achieving the above-described purpose includes an input yoke connected to the agricultural machinery, an output yoke connected to the work machine, a connection yoke connecting the input yoke and the output yoke, input and It is a power transmission device for agricultural machinery and work equipment that includes a cross bearing provided between the output yoke and the connection yoke to connect the input and output yokes and the connection yoke. The cross bearing is a double coupling shaft that is respectively coupled to the input and output yoke and the connection yoke. It is characterized in that it is provided eccentrically and offset from each other.

In addition, among the two eccentric coupling shafts of the cross bearing, the input and output yoke coupling shafts coupled to the input and output yokes are provided to protrude toward the input and output yokes, and the connection yoke coupling shafts coupled to the connection yokes are provided to protrude toward the connection yoke. You can.

Additionally, among the two eccentric coupling axes of the cross bearing, the input and output yoke coupling axes coupled to the input and output yokes may be provided to have a shorter length than the connection yoke coupling axes coupled to the connection yoke.

According to the power transmission device for agricultural machinery and work machines of the present invention, the work machine towed by the agricultural machine is operated by stably receiving power from the agricultural machine and rotated at the maximum rotation angle from the agricultural machine, thereby changing direction even on narrow farm roads with a large direction change angle. It can be done simply and easily, has the effect of being able to work deep into the work area of corners with a large work radius, and has the effect of maintaining stable power transmission from the input shaft to the output shaft even when the rotation angle of the work machine is large. there is.

1 is a cross-sectional configuration diagram of a universal joint according to a first embodiment of the related art.
Figure 2 is a partially separated perspective view of the universal joint of the second embodiment of the related art.
Figure 3 is an exploded perspective view of a power transmission device connecting agricultural machinery and work equipment according to the present invention.
Figure 4 is a configuration diagram of a cross bearing included in the power transmission device according to the present invention.
Figure 5 is a cross-sectional configuration diagram of a cross bearing according to the present invention.
Figure 6 is a front and side view of the cross bearing according to the present invention.
Figure 7 is a plan cross-sectional view showing the coupled state of the power transmission device according to the present invention.
Figure 8 is a separated plan cross-sectional view of the input yoke, output yoke, and connection yoke of the power transmission device according to the present invention.
Figure 9 is a cross-section showing the maximum rotation angle of a work machine rotated from an agricultural machine by the power transmission device according to 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.

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.

3 to 9 are diagrams showing the power transmission device according to the present invention and the input yoke, output yoke, connection yoke, cross bearing, etc. comprised therein.

The power transmission device for agricultural machinery and work equipment according to the present invention is a power transmission device that transmits the power of the agricultural machinery through the input shaft to the output shaft on the work machine side. The rotation angle is large at the connection portion of the input shaft and the output shaft, so that the direction change angle is narrow and severe. Not only can you easily and conveniently change direction on a single farm road, but you can also work deep into the work area of a corner with a tight work radius, allowing agricultural machinery and work equipment to enter and work efficiently even in places with poor working conditions, and the rotation This is a device that maximizes the output of the work machine by stably transmitting power from the input shaft to the output shaft even when the angle is large.

As shown in FIG. 3, the power transmission device of such agricultural machinery and work machines includes an input yoke 200 splined and connected to the input shaft 100 on the agricultural machine side, and an output shaft 300 on the work machine side and connected by splines. The output yoke 400, the connection yoke 500 connecting the input yoke 200 and the output yoke 400, and the input and output yokes 200 and 400 are respectively provided between the connection yoke 500 and the input yoke 500. and a cross bearing 600 connecting the output yoke 200, 400 and the connection yoke 500.

In particular, the cross bearing 600 has two coupling axes that are respectively coupled to the input and output yokes 200 and 400 and the connecting yoke 500, that is, the input and output yoke coupling axis 620 and the connecting yoke coupling axis 610. They are arranged eccentrically and offset from each other.

In addition, among the two eccentric coupling axes of the cross bearing 600, the input and output yoke coupling axes 620, which are respectively coupled to the input and output yokes 400, are provided to protrude toward the input and output yokes 200 and 400. , the connecting yoke coupling shaft 610 coupled to the connecting yoke 500 is provided to protrude toward the connecting yoke 500.

This means that the input and output yokes (200) (400) and the connecting yoke (500), which are respectively hinged to the input and output yoke coupling shaft 620 and the connecting yoke coupling shaft 610 of the cross bearing 600, are cross bearings ( 600), as shown in Figures 5 and 6, the lubricating oil passages 611 and 621 of each coupling shaft 610 and 620 are eccentrically offset from each other by a distance (O.C.) that allows them to communicate with each other. In addition, as the input and output yokes (200) (400) and the connection yoke (500) are positioned away from each other through the cross bearing (600), the input and output yoke (200) is hinged to the cross bearing (600). ) It is possible to form a large rotation angle between (400) and the connection yoke (500).

In addition, the cross bearing 600 can be reinforced by having a protruding structure protruding on both sides in the central portion of the cross bearing 600 by an eccentric length where the two coupling axes 610 and 620 are offset from each other.

In addition, among the two eccentric coupling axes of the cross bearing 600, the input and output yoke coupling axis 620 coupled to the input and output yokes 200 and 400 is the connection yoke coupling axis coupled to the connection yoke 500 ( It is desirable to have a relatively short length compared to 610).

The reason why the length of the input and output yoke coupling shaft 620, where the input and output yokes 200 and 400 are coupled, is shorter than the length of the connection yoke coupling shaft 610, which is coupled with the connection yoke 500, is , When the input and output yokes (200) (400) are rotated while connected via the connecting yoke (500) and the cross bearing 600, the distal ends of the input and output yokes (200) (400) are shown in Figure 9. As shown, by being accommodated and rotated within the connection yoke 500, the rotation angle of the input and output yokes 200 and 400 is formed to be large, making it possible to change direction in a narrow farm road with a large direction change angle or in a work space with a large work angle. This is to enable agricultural machinery and work equipment to enter and work effectively even in places with poor working conditions, such as being able to enter deep into corners and work.

In addition, as shown in FIG. 5, the configuration of the cross bearing 600 as described above is connected to the input and output yoke coupling shaft 620 and the connecting yoke 500, which are coupled to the input and output yokes 200 and 400. Inside the coupled connecting yoke coupling shaft 610, lubricating oil paths 611 and 621 are formed orthogonally along the longitudinal direction of each axis, and the ends of each coupling shaft 610 and 620 rotate via a thrust bearing. Possibly coupled bearing caps 630 are installed, and an oil inlet communicating with the lubricating oil passages 611 and 621 is formed in one of the bearing caps 630 or both bearing caps 630 orthogonal to each other.

At this time, the lubricating oil path 611 formed on the input and output yoke coupling shaft 620 and the lubricating oil path 621 formed on the connecting yoke coupling shaft 610 are both misaligned and orthogonal to each other as shown in FIG. 5. ) are provided to communicate with each other in the central part where 621 intersect.

Meanwhile, the outer diameter (T) of the input and output yoke coupling shaft 620, which is coupled with the input and output yoke 200 and 400 in the cross bearing 600 as described above, is connected to the connection yoke 500 as shown in FIG. 6. It may be formed to be larger than the outer diameter (t) of the connecting yoke coupling shaft 610 to be coupled.

This is an input for transmitting and receiving power from the input shaft 100 and the output shaft 300 with each input yoke 200, output yoke 400, and connection yoke 500 connected via the cross bearing 600. Because the yoke 200 and the output yoke 400 rotate and change angles from time to time, more load is applied to the input and output yoke coupling shaft 620 of the cross bearing 600.

As a result, the outer diameter (T) of the input and output yoke coupling shaft 620, which is coupled to the input yoke 200 and the output yoke 400, is formed to be larger than the outer diameter (t) of the connection yoke coupling shaft 610, thereby reinforcing strength. This made it possible to withstand the load.

In addition, as shown in FIG. 8, with respect to the rotation angle of the input and output yokes 200 and 400, the outer diameter (R) of the tip of the input yoke 200 and the output yoke 400 is the inner diameter of the inlet of the connection yoke 500. It is formed smaller than (r) so that when the input yoke 200 and output yoke 400 are rotated, the front ends of the input yoke 200 and output yoke 400 are easily accommodated inside the connection yoke 500 without friction. By being formed to rotate so that the input yoke 200 and the output yoke 400 can form a large rotation angle from the connection yoke 500. As shown in FIG. 9, the maximum rotation angle can be rotated up to 75° on both sides about the longitudinal axis of the connection yoke 500.

The tip of the input yoke 200 and the output yoke 400 can be rotated while accommodated in the inlet of the connection yoke 500 to form a large rotation angle (up to 75° or less on both left and right sides with respect to the axis). The length (L) of the connection yoke coupling shaft 610 coupled with the connection yoke 500 in the cross bearing 600 is determined by measuring the length (L) of each input and output yoke coupling shaft coupled with the input yoke 200 and the output yoke 400 ( This is possible because in addition to forming it longer than the length (l) of 620), the outer diameter (R) of the tip of each input yoke (200) and output yoke (400) is formed smaller than the inlet inner diameter (r) of the connection yoke (500). .

Meanwhile, as described above, the input and output yokes (200) (400) are rotated up to 75° from the connecting yoke (500), and at the same time, the overall length (W) of the power transmission device, that is, between the input shaft (100) and the output shaft (300), is rotated up to 75°. The structures of the input and output yokes (200) (400) and the connection yoke (500) were improved for length.

If this is explained with reference to FIGS. 7 and 8, the outer diameter (R) of the tip of the input yoke (200) and the output yoke (400) is formed to be smaller than the inlet inner diameter (r) of the connection yoke (500), so that the input yoke (200) And by securing a spaced gap (G) between the outer side of the tip of the output yoke (400) and the top of the inlet inner diameter (r) of the connection yoke (500), when the input yoke (200) and the output yoke (400) are rotated, the connection yoke ( 500) is delayed as much as possible so that the input yoke 200 and output yoke 400 can be rotated up to 75° from the longitudinal axis (center line) of the connection yoke 500, as shown in FIG. 9.

In addition, in order to reduce the overall length (W) of the power transmission device, the gap between both ends of the body portion 510, which constitutes the connection yoke 500, and the outer periphery of the coupler (H) of each connection side yoke portion 520. (D) was shortened to form the input yoke 200 and output yoke 400 to be as close as possible to the body portion 510 of the connection yoke 500, and each input yoke 200 and output yoke 400 The outer diameter (R) of the tip is formed to be smaller than the inner diameter (r) of the inlet of the connection yoke (500).

As the connection structure of the input yoke 200, the output yoke 400, and the connection yoke 500 is improved, the input yoke 200 and the output yoke 400 are directed on both sides of the longitudinal axis of the connection yoke 500. Not only can it be rotated up to 75°, but it also has the advantage of reducing the volume as the overall length (W) of the power transmission device is reduced.

And, as shown in FIG. 3, the connection yoke 500 has a ring-shaped hollow body portion 510 formed in the center, and a pair of pairs protruding from the body portion 510 on both sides of the body portion 510. The connection side yoke parts 520 are provided to face each other, and the inner peripheral surface of the body part 510 is formed in an arc shape with the inner diameter gradually decreasing from the entrance ends of both sides to the center of the inner side, as shown in FIGS. 7 and 8. As a result, when the input yoke 200 and the output yoke 400 are rotated, the front ends of the input yoke 200 and the output yoke 400 rotate smoothly without friction occurring within the body portion 510 of the connection yoke 500. It will come true.

In addition, the input yoke 200 has a pair of input sides coupled to the input yoke coupling shaft 620 of the cross bearing 600 as shown in FIG. 5 at one end (rear part) facing the cross bearing 600. The yoke portions 220 are protruded to face each other, and an input side coupling portion 210 spline coupled to the input shaft 100 is formed at the opposite end (front portion).

In addition, the output yoke 400 also has a pair of output side yoke parts 420 coupled to the output yoke coupling shaft 620 of the cross bearing 600 at one end (front part) facing the cross bearing 600. They are formed to protrude to face each other, and an output side coupling portion 410 splined to the output shaft 300 is formed at the other end (rear portion) on the opposite side.

Meanwhile, the input shaft coupling portion 210 spline coupled to the input shaft 100 is provided to move back and forth along the axial direction, and the output shaft coupling portion 410 spline coupled to the output shaft 300 is a fixing member such as a pin. It is fixedly coupled to the output shaft 300 via a , but if necessary, the output shaft coupling portion 410 may also be provided to be movable back and forth on the output shaft 300.

And, as shown in FIG. 8, the input yoke 200 is formed such that the length of the input shaft coupling portion 210 of the input yoke 200 is longer than the length of the output shaft coupling portion 410 of the output yoke 400. This can be done because the input shaft coupling portion 210 must be moved in the forward and backward directions on the input shaft 100 according to the rotation of the input yoke 200 and the output yoke 400, thereby securing the moving distance. This is to do so.

As a result, the input shaft 100 and the input shaft coupling portion 210 are provided only in a splined state, so that the input shaft coupling portion 210 can be moved forward and right on the input shaft 100, and the output shaft 300 and the output It is preferable that the shaft coupling portion 410 is fixed with a separate fixing member after spline coupling so that the output shaft 300 and the output shaft coupling portion 410 cannot be moved forward or backward.

The power transmission device between the agricultural machinery and the work machine according to the present invention as described above is provided between the agricultural machine and the work machine, and can stably transmit the power of the agricultural machine to the work machine.

In addition, the rotation angle is maximized in the power transmission device that connects the input shaft 100 on the agricultural machinery side and the output shaft 300 on the work machine side, so that direction change can be easily and easily achieved even on narrow farm roads with severe direction change angles. In addition, it is possible to enter and work efficiently with agricultural machinery and work equipment even in places with poor working conditions, such as being able to smoothly enter and work deep into work areas in corners with sharp working angles.

In addition, even when the rotation angle of the agricultural machinery and the working machine is large, power is transmitted stably from the input shaft 100 to the output shaft 300, making it possible to maximize the output of the working machine.

Although the present invention has been described in detail through specific examples, this is for detailed explanation of 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.

100: input shaft 200: input yoke
210: input side coupling part 220: input side yoke part
300: output shaft 400: output yoke
410: output side coupling part 420: output side yoke part
500: Connection yoke 510: Body part
520: Connection side yoke part 600: Ten (+) bearing
610: Connection yoke coupling axis 620: Input and output yoke coupling axis
611,621: Lubricating oil 630: Bearing cap
D: Gap G: Gap
H: Connector of the yoke part on the connection side of the connection yoke
OC: Eccentric distance between both coupling axes of cross bearings
L: Length of connection yoke coupling axis
l: Length of input and output yoke combination axis
R: Outer diameter of the tip of the input and output yoke r: Inlet inner diameter of the connection yoke
T: Outer diameter of input and output yoke coupling shaft t: Outer diameter of connection yoke coupling shaft
W: Total length of power transmission device

Claims (3)

An input yoke connected to agricultural machinery, an output yoke connected to a work machine, a connection yoke connecting the input yoke and the output yoke, and a cross provided between the input and output yokes and the connection yoke to connect the input and output yoke and the connection yoke. As a power transmission device for agricultural machinery and work equipment including bearings,
A cross bearing is a power transmission device for agricultural machinery and work equipment in which the input and output yoke coupling shafts coupled to the input and output yokes and the connecting yoke coupling shafts coupled to the connecting yoke are eccentrically aligned with each other.
In claim 1,
Among the two eccentric coupling axes of the cross bearing, the input and output yoke coupling axes coupled to the input and output yokes are provided to protrude toward the input and output yokes, and the connection yoke coupling shafts coupled to the connection yokes are provided to protrude toward the connection yoke. Power transmission device for work machines.
In claim 1,
Among the two eccentric coupling axes of the cross bearing, the input and output yoke coupling axes coupled to the input and output yokes are a power transmission device for agricultural machinery and work equipment that is provided to have a shorter length than the connecting yoke coupling axis coupled to the connecting yoke.

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