Power output coupling device of tractor

Abstract

The present invention relates to a power take-off coupling device of a tractor, which can quickly couple coupling parts for transmitting power of a power take-off to a machine behind the tractor to each other, the device comprising: a first coupling part which is connected to a power take-off shaft of the tractor and receives the power; and a second coupling part which is coupled to the first coupling part, is connected to a power transmission shaft of the machine, and supplies power transmitted from the first coupling part to the machine, the first coupling part having a housing part in which a housing space is formed, and one or more openings formed in a front surface portion of the housing part and communicating with the housing space, a power output connecting part combined with a power output shaft of the tractor is fixed on the rear surface part of the main body, and the second coupling part comprises more than one insertion part which can be inserted into the opening part and is inserted into the accommodating space through the opening part; and a power transmission connection portion fixed to a rear surface portion of the insertion member and connected to a power transmission shaft of the machine.

Description

Technical Field

[0001] This invention relates to a power take-off (PTO) coupling device for a tractor, and more particularly to a power take-off coupling device for a tractor that enables the coupling parts for transmitting power from the power output to a machine at the rear of the tractor to be quickly connected to each other.

[0002] Furthermore, the present invention relates to a power take-off coupling device for a tractor, wherein, in order to transmit the power output to a machine at the rear of the tractor, a first coupling part is directly connected and fixed to the power take-off shaft, and a second coupling part is integrally fixed to a universal joint connected to the power transmission shaft of the machine. Therefore, it is not only easy to manufacture, but also significantly reduces manufacturing costs. Background Technology

[0003] Tractors are typically used for large-scale cultivation of paddy fields or farmland. Most tractors are equipped with plows, harrows, rotary tillers, or other machines attached to the rear to operate the tractor, thereby performing various agricultural operations such as tilling, soil breaking, pest and disease control, water pumping, and threshing. These machines connected to the tractor receive power generated by the tractor's engine through power output (PTO) to operate.

[0004] Therefore, the tractor's power take-off shaft and the machine's power input shaft are interconnected to transmit power. As an example of such a connection device, U.S. Patent No. 11,313,417 (TRACTOR PTO QUICK-CONNECT DEVICE AND METHOD OF USE) describes... Figure 1 and Figure 2 As shown, a receiver 207 is provided at the rear center of the first plate 209 in the shape of a disc. The receiver 207 is provided with a connecting hole 205 for inserting the power output shaft of the tractor so as to be fixed by gear engagement. On the first plate 209, a plurality of opening holes 210a are formed at equal intervals around the receiver 207. Furthermore, small opening holes 210b with a diameter smaller than that of the opening hole 210a are continuously formed on the side of each opening hole 210a.

[0005] On the front surface of the second plate 211 in the shape of a disc, a connector 213 for insertion into the opening 210a is formed in a T-shape, corresponding to the opening 210a.

[0006] That is, connector 213 includes: connector shaft 213b, which is cylindrical; and connector upper part 213a, which is disc-shaped and has a diameter larger than that of connector shaft 213b, and is formed at the upper end of connector shaft 213b. The diameter of this connector upper part 213a is smaller than that of opening hole 210a and larger than that of small opening hole 210b.

[0007] Furthermore, a shaft 223 for connecting to the power transmission shaft of the machine is formed at the rear center of the second plate 211, and gear teeth 402 are formed on the outer surface of the shaft 223, thereby engaging with the power connection shaft gear of the machine.

[0008] Therefore, after clamping each connector 213 of the second plate 211 into the opening hole 210a of the first plate 209, and then rotating it towards the small opening hole 210b to prevent the connector 213 from disengaging from the opening hole 210a, the locking safety pin 215 is formed through the through hole 216 of the first plate 209 and the second plate 211 and tightened, thereby having a structure that fixes the first plate 209 and the second plate 211 to each other to transmit the power output to the power shaft of the machine.

[0009] However, according to this existing technology, after clamping multiple connectors 213 one by one into the opening hole 210a, the operator can only make them fit by rotating the second plate 211, and the operation of inserting multiple connectors 213 one by one into the opening hole 210a is not easy.

[0010] That is, although the existing technology can quickly connect the power output, it is not so easy to fasten the first plate 209 and the second plate 211 because it is inconvenient to pull and move the second plate 211 in the direction of the first plate 209 fixed to the power output shaft, and multiple connectors 213 need to be clamped one by one in the opening hole 210a, and the second plate 211 needs to be rotated in the direction of the small opening hole 210b. Therefore, it has the disadvantage of reduced operability.

[0011] Furthermore, if the connector 213 is rotated toward the opening 210a in such a way that the second plate 211 is separated from the first plate 209, the connector shaft 213b contacts the inner wall of the opening 210a and the upper part 213a of the connector is stuck on the outer part of the opening 210a, making it difficult to detach.

[0012] Therefore, the upper part 213a of the connector must be aligned with the opening hole 210a in order for the upper part 213a of the connector to disengage from the opening hole 210a, thereby separating the first plate 209 and the second plate 211. As a result, this structure has the disadvantage of being difficult to separate quickly.

[0013] Furthermore, when the connector 213 of the second plate 211 is inserted into the small opening 210b through the opening 210a of the first plate 209 to transmit power, if a large or instantaneous force is applied, the following disadvantages occur: damage such as bending or breakage of the cylindrical connector shaft 213b may occur.

[0014] Meanwhile, in order to connect with the universal joint set on the power transmission shaft of the machine, gear teeth 402 need to be formed on the outer surface of the shaft 223 of the second plate 211. Therefore, there is a problem that the manufacturing cost increases and the productivity decreases due to the machining of gear teeth 402.

[0015] Existing technical documents

[0016] 1. U.S. Patent No. 11,313,417

[0017] (TRACTOR PTO QUICK-CONNECT DEVICE AND METHOD OF USE) Summary of the Invention

[0018] The present invention addresses this existing problem by providing a power output coupling device for a tractor that enables faster and more convenient coupling by simply retracting the coupling part connected to the power output and the coupling part connected to the power transmission shaft of the machine.

[0019] Furthermore, another object of the present invention is to provide a power output coupling device for a tractor, wherein the device is fixed by clamping a coupling part provided with a machine for transmitting power output to the rear of the tractor and rotating it, thereby enabling quick connection and quick and easy separation.

[0020] Furthermore, another objective of the present invention is to provide a power output coupling device for a tractor in which a first coupling part is directly fixed to the power output shaft, and a second coupling part is integrally fixed to a universal joint connected to the power transmission shaft of the machine.

[0021] To achieve the above objectives, a tractor power output coupling device according to an embodiment of the present invention includes: a first coupling portion connected to the tractor's power output shaft to receive power; and a second coupling portion detachably connected to the first coupling portion and connected to the machine's power transmission shaft to provide the machine with power transmitted from the first coupling portion. The tractor power output coupling device is characterized in that the first coupling portion includes: a storage portion, which is a box-shaped structure with an open upper portion forming an internal storage space; and a power output connection portion fixed to the rear surface of the storage portion and combined with the tractor's power output shaft. The second coupling portion includes: an insertion member, formed to be housed in the storage portion and inserted into the storage portion; and a power transmission connection portion fixed to the rear surface of the insertion member and connected to the machine's power transmission shaft.

[0022] Furthermore, in another embodiment of the present invention, the tractor power output coupling device includes: a first coupling portion connected to the tractor's power output shaft to receive power; and a second coupling portion detachably connected to the first coupling portion and connected to the machine's power transmission shaft to provide the machine with power transmitted from the first coupling portion. The tractor power output coupling device is characterized in that the first coupling portion has a disc-shaped storage portion with an internal storage space, and one or more openings are formed on the front surface of the storage portion and communicate with the storage space, while the rear surface of the main body... The second connection portion is fixedly provided with a power output connection part that is combined with the power output shaft of the tractor. The second connection part includes: one or more insertion parts formed in such a way that they can be inserted into the opening and inserted into the storage space through the opening; and a power transmission connection part fixed to the rear surface of the insertion parts and connected to the power transmission shaft of the machine. The storage space allows the insertion parts inserted through the opening to be stored in a lateral rotation manner. An anti-rotation part is provided in the storage space, which contacts the side part of the insertion parts and restricts rotation while transmitting power.

[0023] Furthermore, the present invention also includes a power output coupling device for a tractor, characterized in that it comprises: a first coupling portion, the rear surface portion of which is integrally formed on a power output connection portion for connecting with a power output shaft to receive power; and a second coupling portion, which is detachably connected to the first coupling portion to receive power, and a universal joint is integrally fixed on the rear surface portion, the universal joint being provided with a shaft connection portion for connecting with the power transmission shaft of the machine.

[0024] An embodiment of the power output coupling device for a tractor of the present invention, configured as described above, has the following advantages: since the second coupling part fixed to the power transmission shaft of the machine can be snapped into the first coupling part, which is in the form of a housing fixed to the power output shaft of the tractor, or can be directly detached, the connection operation of the machine is very convenient and the operability is excellent.

[0025] Furthermore, it has the following advantages: since the second connecting part is guided and inserted along the tapered slope of the first connecting part, the connection operation of the first connecting part and the second connecting part can be completed very easily even if the operator does not align precisely.

[0026] Moreover, according to another embodiment of the present invention, the following advantages are available: after clamping the second connecting part fixed to the power transmission shaft of the machine into the first connecting part fixed to the power output shaft of the tractor, and fixing it by rotating it, not only can it be quickly connected, but it can also be quickly separated. At the same time, the first connecting part and the second connecting part can have a large contact area to transmit power, thereby preventing damage caused by large power or instantaneous power.

[0027] Furthermore, according to another embodiment of the present invention, the following advantages are achieved: the first connecting part is directly connected to the power output shaft of the tractor and fixed with a pin, and the second connecting part is directly connected to the universal joint provided on the power transmission shaft of the machine and fixed, so that at least the gear teeth are removed at the connection between the second connecting part and the universal joint, thereby reducing manufacturing costs and increasing productivity. Attached Figure Description

[0028] Figure 1 and Figure 2 A diagram illustrating the structure of a power output connection device based on existing technology.

[0029] Figure 3 A diagram illustrating the structure of the power take-off coupling device for the tractor according to the present invention.

[0030] Figure 4 for Figure 3 Combined sectional view.

[0031] Figure 5 A diagram showing the detailed structure of the first and second connecting parts.

[0032] Figure 6 for Figure 5 The combined diagram.

[0033] Figure 7 for Figure 6 Combined sectional view.

[0034] Figure 8 A diagram illustrating other forms of the first connecting part.

[0035] Figure 9 The figure illustrates another embodiment of the first connecting part and the second connecting part.

[0036] Figure 10 To show Figure 9 A diagram of the combined states.

[0037] Figure 11 For illustrative purposes Figure 9 A diagram of the internal structure of the first connecting part.

[0038] Figure 12 for Figure 9 A cross-sectional view showing the combination of the first and second connecting parts.

[0039] Figure 13 and Figure 14 The figure shows another embodiment of the first connecting part and the second connecting part.

[0040] Figure 15 A diagram illustrating another embodiment of the locking unit applying the present invention.

[0041] Figure 16 for Figure 15 The combined diagram.

[0042] Figure 17 This diagram illustrates the structure of a power output coupling device for a tractor, according to another embodiment of the first and second coupling parts of the present invention. Detailed Implementation

[0043] The above-described objectives, features, and advantages will be explained in detail with reference to the accompanying drawings, thus enabling those skilled in the art to easily implement the technical concept of this invention. In describing this invention, detailed descriptions of related known technologies will be omitted if it is determined that such specific descriptions may unnecessarily obscure the main points of the invention. The terminology used in this invention has been selected from a pool of general terms that are used as broadly as possible while considering the functions of this invention; however, this may vary depending on the intent of those skilled in the art, precedents, the emergence of new technologies, etc. Furthermore, in certain cases, terms may be arbitrarily chosen by the applicant; in such cases, their meanings will be detailed in the description of the relevant invention. Therefore, the terminology used in this invention should be defined based on the meaning of the terms and the full text of this invention, rather than simply based on the names of the terms.

[0044] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0045] However, the embodiments of the present invention illustrated below can be modified into various other implementations, and the scope of the present invention is not limited to the embodiments detailed below.

[0046] The embodiments of the present invention provided are intended to explain the invention more fully to those skilled in the art.

[0047] Figure 3 The diagram showing the exploded structure of the power output coupling device of the tractor of the present invention includes: a first coupling portion 300, the rear surface of which is integrally formed with a power output connection portion 370 for connecting with a power output shaft 800 and for receiving power; and a second coupling portion 400, which is detachably connected to the first coupling portion 300, and a universal joint 600 is integrally fixed on the rear surface, the universal joint 600 being provided with a shaft connection portion 610 for connecting with the power transmission shaft 900 of the machine.

[0048] The first connecting part 300 can be quickly fastened to the second connecting part 400 through a snap-fit ​​structure. The power output connection part 370 is formed integrally on the rear surface of the first connecting part 300 by welding or the like. The power output connection part 370 is a tubular body with a structure that allows the power output shaft 800 to be inserted into the inside for fastening.

[0049] In this case, in addition to structures that are fixed or connected by spring pins or bolts, fastening structures can also adopt various forms of connection structures.

[0050] The second connecting part 400 has a universal joint 600 integrally fixed on one side of its rear surface via a power transmission connecting part 440. The universal joint 600 is connected to the power transmission shaft 900 of the machine. On the other side of the universal joint 600, a shaft connecting part 610 is integrally provided. The shaft connecting part 610 is inserted into the power transmission shaft 900 of the machine and meshes with the gear teeth 630.

[0051] In this case, the aforementioned power transmission connection 440 can be formed as a whole with the second connection 400, or it can be formed as a whole by various fastening methods such as welding, pins, and bolts.

[0052] Furthermore, the aforementioned power transmission connection 440 can be configured to have gear teeth formed on the outer side, depending on the shape of the power transmission shaft 900.

[0053] Therefore, as Figure 4 As shown, a power output shaft 800 is inserted into the power output connection 370 of the first connection part 300 and fixedly connected by inserting a pin or bolt into the pin hole 371. A power transmission shaft 900 of the machine is inserted into and engaged with the shaft connection part 610 of the second connection part 400. Therefore, when the second connection part 400 is connected to the first connection part 300, the power of the tractor is transmitted to the machine.

[0054] This structure allows for quick assembly and disassembly of the power transmission structure during power output via the first connecting part 300 and the second connecting part 400. Furthermore, the removal of some gear teeth makes it easier to manufacture and reduces manufacturing costs.

[0055] That is, in the structure of the present invention, gear teeth 620 are formed only in the shaft connection portion 610 of the universal joint 600, while in the structure of the prior art, gear teeth 205 are formed on the first plate 209, gear teeth 402 are formed on the outer surface of the shaft 223 of the second plate 211, and gear teeth are also required to be formed in the universal joint that connects the shaft 223, so a machining process for three gear teeth is required.

[0056] It should be understood that the first connecting part 300 and the second connecting part 400 can be used Figure 17 The first connecting part 300 and the second connecting part 400 shown in the diagram are replaced.

[0057] Figures 5 to 8 The figure shows an example of the first connecting part 300 and the second connecting part 400. The first connecting part 300 is provided with a housing part 310 in the shape of a box. A power output connection part 370 for connecting with the power output shaft of a tractor is fixed on the rear surface of the housing part 310. This power output connection part 370 is structured such that after the existing power output shaft of the tractor is inserted, a connecting pin is inserted into the pin hole 371 for fastening, so that the power output shaft can be connected with the power output connection part 370 to transmit power.

[0058] Of course, when fixing the power output shaft and the power output connection 370, not only pins, but also various other pin fixing methods or bolt fixing methods can be used.

[0059] Furthermore, the power output connection portion 370 is preferably located at the center of the rear surface of the aforementioned storage portion 310, but it does not necessarily have to be formed at the center and can be fixed in any position.

[0060] The aforementioned storage section 310 has a storage space 311 inside and is in the form of a box with an upper opening 320. For this purpose, it includes: a rear surface plate for fixing the power output connection section 370; a front surface plate separated from the rear surface plate by the size of the storage space 311; side walls for forming two side surfaces between the rear surface plate and the front surface plate; and a bottom plate.

[0061] The second connecting part 400 will be formed in the size and shape of the storage space 311 that can be accurately inserted into the first connecting part 300. The insertion part 410 is formed in the size and shape corresponding to the width and length of the storage space 311. At the same time, the thickness is equal to the gap between the rear surface plate and the front surface plate of the storage space 311.

[0062] Furthermore, a power transmission connection part 440 is fixedly provided on the rear surface of the insertion part 410. The power transmission connection part 440 is used to connect to the power transmission shaft of the machine through a universal joint. Gear teeth are formed around the outer surface of the power transmission connection part 440. The gear teeth are used to insert into one side of the universal joint and mesh. When the insertion part 410 is inserted into the receiving part 310 to engage, the power transmission connection part 440 is preferably located on the same straight line as the power output connection part 370. Even if they are not located on the same straight line, it is not a problem.

[0063] That is, since a universal joint is provided on the power transmission shaft of the machine, power transmission can be achieved without the power output connection 370 and the power transmission connection 440 being on the same straight line.

[0064] Therefore, after lifting the insertion member 410 of the second connecting part 400 upward, its lower side is clamped from the top through the open upper opening 320 of the storage part 310. Due to its own weight, the insertion member 410 naturally descends to the inside of the storage part 310, and the insertion member 410 is accurately stored inside the storage part 310. The storage part 310 and the insertion member 410 are locked by the locking pin 380.

[0065] Therefore, pin fixing holes 360 and 430 are respectively formed through corresponding positions in the storage part 310 and the insertion part 410, such as... Figure 6 As shown, when the insertion part 410 is housed in the housing part 310, the locking pin 380 can be inserted into the pin fixing holes 360, 430 to achieve fastening.

[0066] Furthermore, the aforementioned locking pin 380 can be set independently, such as... Figure 5 and Figure 6 As shown, a structure can be formed that is fixed to the storage section 310.

[0067] For this purpose, the locking pin 380 fixes the straight tube-shaped fixing part 381 to the outside of one side wall of the storage part 310 by welding or the like. The pin 382 is inserted through the fixing part 381. A stop 384 is provided on one side of the pin 382. A spring 383 is inserted between the stop 384 and the fixing part 381 on the outside of the pin 382 to elastically support the pin 382. The other side is formed into a shape that bends toward the pin fixing holes 360 and 430.

[0068] Therefore, the insertion part 410 is inserted into the receiving part 310 to align with the pin fixing holes 360 and 430. Then, the other side of the pin 382 is pulled to rotate the bent part towards the pin fixing holes 360 and 430 and insert it. Figure 7 As shown, the elastic support force of the spring 383 can keep the bent part of the pin 382 inserted into the pin fixing holes 360 and 430, thereby fixing the storage part 310 and the insertion part 410. This prevents the storage part 310 and the insertion part 410 from disengaging when rotated by power, and makes it very easy to connect them.

[0069] Therefore, the storage section 310 rotates by the rotation of the power output shaft, and this rotational force is transmitted to the insertion part 410 and then to the power transmission shaft of the machine through the power transmission connection part 440.

[0070] When separating the insertion part 410 from the storage section 310, it is very easy to separate by simply pulling the pin 382 and rotating it laterally toward the storage section 310, and then lifting the insertion part 410.

[0071] On the other hand, in order to facilitate the insertion of the insertion component 410 into the storage portion 310, the two side walls of the storage space 311 are preferably formed with inclined portions 330 and 330'. The inclined portions 330 and 330' are tapered in shape and their width gradually narrows towards the lower side. Preferably, the insertion component 410 is also formed with a corresponding inclined portion 420 and 420' that is tapered towards the lower side.

[0072] Therefore, if the narrower lower part of the insertion member 410 is inserted into the upper part through the wider upper opening 320 of the storage part 310, the insertion member 410 will be guided by the inclined parts 330, 330' of the storage part 310, thereby achieving a precise connection.

[0073] In this case, since a front opening 340 that opens to the upper part, i.e., to the upper opening 320, is formed on the front surface of the storage part 310, the power transmission connection part 440 will be inserted through the front opening 340 when the insertion part 410 is inserted. This structure is preferably formed.

[0074] Furthermore, in order to discharge foreign objects such as soil, water, grass clippings, and grass that flow into the storage space 311 to the outside, a lower opening 351 is formed at the bottom part, which is part of the bottom 350. This bottom 350 can be formed into a stopper shape, so that when the insertion part 410 is inserted into the storage part 310, the weight applied to the inclined parts 330 and 330' is distributed, thereby preventing the storage part 310 from being damaged, and at the same time, the pin fixing holes 360 and 430 can be accurately aligned.

[0075] Furthermore, the aforementioned inclined portions 330, 330' and inclined portions 420, 420' are preferably formed on both sides of the storage portion 310 and the insertion member 410, but it is also acceptable for them to be formed on only one side.

[0076] That is, any shape in which the width of the lower part of the insertion member 410 is smaller than the width of the open upper part of the storage space 311 is acceptable.

[0077] For example, the storage section 310 and the insertion member 410 can be formed form, form, Various forms, including shapes.

[0078] Furthermore, although the storage section 310 is illustrated and explained in a manner similar to a plate with a storage space 311 inside, it can be formed into various three-dimensional shapes such as an open hemispherical shape or an open triangular pyramid shape, and is not limited to a plate shape.

[0079] Figure 8 As shown in the figure, another form of the storage section 310 is formed, extending inward from the front side of the storage section 310 to form an anti-disengagement locking section 341, that is, a front opening 340 is formed between the anti-disengagement locking sections 341 on both sides.

[0080] Of course, this anti-disengagement locking part 341 can also be formed in a structure that extends from the bottom front part to the inside, depending on the situation. Preferably, the anti-disengagement locking part 341 is formed in such a way that the two side edges are locked or the two side edges and the lower edge are locked when the insertion part 410 is inserted into the storage part 310.

[0081] Therefore, in order to make the lower part of the insertion member 410 higher than the upper part of the storage part 310, the insertion member 410 can be stored in the storage space 311 through the front opening 340 without lifting the insertion member 410.

[0082] When the structure is located above the power take-off shaft of the tractor, if the insertion part 410 is raised above the storage part 310, interference may occur between the structure and the insertion part 410, thus making storage impossible. However, according to other embodiments of the storage part 310 of the present invention, it is possible to connect with the storage part 310 while avoiding interference with other structures.

[0083] Furthermore, the storage part 310 and the insertion part 410 can be secured by forming a pin fixing hole 360 ​​in the anti-disengagement locking part 341.

[0084] Figures 9 to 12As shown in the figure, another embodiment of the first connecting portion 300 and the second connecting portion 400 is illustrated. The first connecting portion 300 has a disc-shaped storage portion 310 that forms a storage space 311 inside. Its structure includes: a disc-shaped rear surface plate; a disc-shaped front surface plate that is spaced apart from the rear surface plate and located at the front part; and a side surface plate that is disposed around the outer periphery of the rear surface plate and the front surface plate to fix the rear surface plate and the front surface plate, thereby forming a storage space 311 between the rear surface plate and the front surface plate inside.

[0085] A power output connection 370 for engaging with the power output shaft of a tractor is fixed on the rear surface of the aforementioned storage part 310. The structure of this power output connection 370 is as follows: after inserting a conventional tractor power output shaft, a connecting pin is inserted into the pin hole 371 to secure it, so that the power output shaft can engage with the power output connection 370 to transmit power.

[0086] Of course, when fixing the power output shaft and the power output connection 370, not only pins but also bolts can be used, and various types of pin fixing or bolt fixing methods can be used.

[0087] Furthermore, on the front surface of the aforementioned storage portion 310, a plurality of openings 340 are formed in a radial pattern at predetermined intervals on the front surface plate. The openings 340 are formed such that the width of the opening gradually increases from the middle of the front surface portion along the outward direction, and a structure is formed in which the plurality of openings 340 are interconnected at the center of the main body 310.

[0088] And, as Figure 11 As shown, in the lateral direction of the opening 340 of the storage space 311, an anti-rotation part 312 is preferably formed in the opposite direction of the rotation of the storage part 310. Preferably, this anti-rotation part 312 is close to an adjacent opening or located between adjacent openings.

[0089] That is, a stop-type anti-rotation part 312 is formed at the same position in the storage space 311 between the openings. The anti-rotation part 312 restricts the rotation of the insertion member 450 of the second connection part 400 and transmits power through surface contact.

[0090] Most preferably, the size and shape of the opening 340 and the storage space between the openings are the same as those of the insertion member 450. Furthermore, anti-rotation portions 312 are formed on the side portions of adjacent openings, i.e., on the side portion facing the rotation direction of the storage portion 310. The storage space 311 connects the other side portion of the opening 340, so that the insertion member 450 inserted into the opening 340 can rotate in the lateral direction to be stored in the storage space 311 between the openings.

[0091] Preferably, the anti-rotation part 312 is formed with the same shape as the side part of the insertion member 450, thereby maximizing the contact surface.

[0092] The second connecting part 400 is provided with a plurality of insertion parts 450, which can be inserted into the storage space 311 through the opening 340 of the first connecting part 300.

[0093] That is, multiple insert parts 450 in the shape of blades are provided, and the multiple insert parts 450 are arranged radially with intervals to be inserted into the multiple openings 340 respectively. A power transmission connection part 440 is fixedly provided on the rear surface of the insert part 450. The power transmission connection part 440 is used to connect to the power transmission shaft of the machine through a universal joint. The power transmission connection part 440 has gear teeth formed around its outer surface to be inserted into one side of the universal joint and mesh. When the insert part 410 is inserted into the receiving part 310 and engaged, the power transmission connection part 440 is preferably located on the same straight line as the power output connection part 370, but it is not a problem even if they are not located on the same straight line.

[0094] That is, a universal joint is provided on the power transmission shaft of the machine, so power transmission can be achieved without the power output connection 370 and the power transmission connection 440 being on the same straight line.

[0095] Therefore, after the insertion member 450 of the second connecting part 400 is clamped through the opening 340 of the storage part 310, if it is rotated in the opposite direction of the rotation of the storage part 310, the insertion member 450 will rotate and move to the storage space 311 between the openings, and the side part in the direction of rotation will come into face-to-face contact with the anti-rotation part 312 to prevent rotation.

[0096] This anti-rotation part 312 can be formed in the position where the entire insertion part 450 is inserted into the storage space 311, or it can be formed in the position where only a part of the insertion part 450 is inserted into the storage space 311.

[0097] Meanwhile, since the width of the insertion member 450 is smaller than the width of the opening 340, the insertion member 450 can be easily inserted into the opening 340, and it is preferable that the length of the insertion member 450 is also slightly smaller than the length of the opening 340.

[0098] An insertion member 450 is inserted into the storage section 310. The storage section 310 and the insertion member 450 are locked by a locking pin 380, which serves as a locking unit, at the position where the side portion of the insertion member 450 contacts the anti-rotation part 312.

[0099] Therefore, corresponding positions of the storage section 310 and the insertion member 450 are respectively provided with pin fixing holes 360 and 430 as locking units, such as... Figure 10 As shown, when the main body 410 is stored in the storage part 310, it can be fastened by inserting the locking pin 380 into the pin fixing holes 360, 430.

[0100] In this case, preferably, fixing holes 430 are formed in each insertion member 450.

[0101] Furthermore, the aforementioned locking pin 380 can be set independently, such as... Figure 9 As shown, a structure can be formed that is fixed to the storage section 310.

[0102] For this purpose, the locking pin 380 fixes the straight tube-shaped fixing part 381 to the outside of one side wall of the storage part 310 by welding or the like. The pin 382 is inserted through the fixing part 381. A stop 384 is provided on one side of the pin 382. A spring 383 is inserted between the stop 384 and the fixing part 381 on the outside of the pin 382 to elastically support the pin 382. The other side is formed into a shape that bends toward the pin fixing holes 360 and 430.

[0103] Therefore, after inserting the insertion part 450 into the storage part 310, as... Figure 10 As shown, rotate the pin 382 towards the storage space 311 to align it with the pin fixing holes 360 and 430. Then, pull the other side of the pin 382, ​​rotate the bent part towards the pin fixing holes 360 and 430, and insert it. Figure 12 As shown, the bent portion of the pin 382 can remain inserted into the pin fixing holes 360 and 430 by the elastic support force of the spring 383, thereby fixing the storage part 310 and the insertion part 450, and thus achieving the connection between the storage part 310 and the insertion part 450 in a way that prevents them from disengaging when rotating based on power.

[0104] Therefore, the storage section 310 rotates by the rotation of the power output shaft, and this rotational force is transmitted to the insertion part 450 and then to the power transmission shaft of the machine through the power transmission connection part 440.

[0105] When the insertion part 450 is separated from the storage section 310, simply pull the pin 382 to rotate it in the side direction of the storage section 310, and the insertion part 450 will rotate in the rotation direction to be placed in the opening section 340, thereby making it very easy to detach.

[0106] On the other hand, the above description describes a structure in which a plurality of openings 340 are formed in the storage section 310 and a plurality of insertion members 450 are formed accordingly. However, in other forms, one or more openings 340 may be formed, and one or more insertion members 450 may be formed corresponding to the openings 340.

[0107] Furthermore, preferably, a centering member is provided to fix the center of the insertion member 450 to the center of the storage portion 310 when the insertion member 450 is inserted into the opening 340, so as to prevent the outer edge of the insertion member 450 from contacting the inner surface of the storage portion 310 when it rotates toward the storage space 311, thereby making rotation very easy. For this purpose, a centering protrusion 313 in the form of a protrusion is formed at the center of the rear surface plate of the storage portion 310, and a centering groove 451 is formed at the center of the insertion member 450, so that the protrusion 313 and the groove 451 are combined and centered, thereby preventing the edge of the insertion member 450 from interfering with the inner surface of the storage portion 310 and allowing it to rotate toward the storage space 311.

[0108] Of course, a centering groove can be formed at the center of the rear surface plate of the storage section 310, and a centering protrusion can be formed at the center of the insertion part 450.

[0109] Figure 13 As shown in another embodiment of the present invention, the first connecting portion 300 is formed with a first body 390 in the shape of a disc, and a power output connection portion 370 for engaging with the power output shaft of a tractor is fixed to the rear surface of the first body 390, while one or more slots 391 are formed around it.

[0110] Furthermore, the second connecting part 400 also forms a second main body 460 in the shape of a disc. In front of the first main body 390, that is, in the part facing the first main body 390, one or more hooks 461 are formed protruding in the circumferential direction according to the position and number corresponding to the slot 391, so as to be fastened into the slot 391.

[0111] Preferably, the hook 461 includes: a protruding portion 461-1 protruding forward; and a curved portion 461-2, which is bent to one side at the front end of the protruding portion 461-1 so that the hook 461 forms a "┓" shape, and the groove 391 forms a curved surface shape in the rotation direction when the hook 461 is inserted and rotated.

[0112] Meanwhile, preferably, referring to Figure 9 and Figure 10 The first body 390 and the second body 460 are respectively provided with pin fixing holes and locking pins, such as Figure 12As shown, a connecting component is provided at the center of the first body 390 and the center of the second body 460.

[0113] Therefore, if the hook 461 is inserted into the slot 391, the bent part 461-2 will protrude through the slot 391 toward the rear surface of the first body 390, the first connecting part 300 will rotate in the direction of rotation for power transmission or the second connecting part 400 will rotate in the opposite direction, and the slot 391 and the hook 461 will lock and fasten each other, thereby realizing power transmission.

[0114] Figure 14 As shown in the figure, another embodiment of the present invention is provided. The first connecting part 300 is formed with a first body 390 in the shape of a disc. A power output connection part 370 for connecting with the power output shaft of a tractor is fixed on the rear surface of the first body 390. At the same time, one or more hooks 392 in the shape of "┗" and protruding forward are formed around the front surface, that is, in the part facing the second connecting part 400.

[0115] Furthermore, the second connecting part 400 also forms a second main body 460 in the shape of a disc, and according to the position and number corresponding to the hooks 392 of the first main body 390, one or more latches 462 in the shape of "┓" and protruding outward are formed around the outer periphery.

[0116] Therefore, the first connecting part 300 will rotate in the direction of rotation for power transmission or the second connecting part 400 will rotate in the opposite direction, and the hook 392 and the lock 462 will lock and fasten each other in a hook-lock form, thereby realizing power transmission.

[0117] Similarly, preferably, the first body 390 and the second body 460 are respectively provided with pin fixing holes and locking pins, and connecting components are provided at the center of the first body 390 and the center of the second body 460.

[0118] The present invention may provide a locking unit with a grabbing structure to replace the pin fixing holes 360, 430 and locking pin 380 formed in the first body 390 and the second body 460. For example, Figure 15 and Figure 16 As shown, a hook 393 is formed on the hook 392 of the first body 390, and a rotating gripper 463 is provided on the lock 462 of the second body 460 to lock the first body 390 and the second body 460.

[0119] Of course, a gripping part can be formed in the first body 390 and a gripping hook can be formed in the second body 460. This gripping structure can also be applied to other embodiments of the present invention.

[0120] That is, it is equipped with a latch at any of the connecting parts as a locking unit, and when the other connecting parts have hooks that are combined with each other, it can achieve locking.

[0121] The above details the specific aspects of the present invention. Obviously, for those skilled in the art, this specific technique is only a preferred embodiment, and the scope of the present invention is not limited thereto.

[0122] Therefore, the actual scope of this invention should be defined according to the appended claims and their equivalents.

Claims

1. A power take-off (PTO) coupling device for a tractor, comprising: The first connecting part is connected to the tractor's power take-off shaft to receive power; and the second connecting part is detachably connected to the first connecting part and to the machine's power transmission shaft to provide the machine with the power transmitted from the first connecting part. The power take-off coupling device of the tractor is characterized in that... The aforementioned first connecting part includes: The storage section is a box-shaped structure that creates internal storage space through an open upper section; and The power take-off connection is fixed to the rear surface of the aforementioned storage section and is coupled to the power take-off shaft of the aforementioned tractor. The aforementioned second connecting part includes: An insertion component, sized and shaped to be housed in the aforementioned storage portion and inserted into the aforementioned storage portion; and The power transmission connection is fixed to the rear surface of the aforementioned insertion component and connected to the power transmission shaft of the aforementioned machine.

2. The power output coupling device for a tractor according to claim 1, characterized in that, The storage space of the first connecting part is formed such that the width of the two side walls or one side wall gradually decreases towards the lower side. The insertion component of the second connecting part is formed such that the two side portions or one side portion are inclined in a manner corresponding to the storage space.

3. A power take-off (PTO) coupling device for a tractor, comprising: The first connecting part is connected to the tractor's power take-off shaft to receive power; and the second connecting part is detachably connected to the first connecting part and to the machine's power transmission shaft to provide the machine with the power transmitted from the first connecting part. The power take-off coupling device of the tractor is characterized in that... The aforementioned first connecting part has a disc-shaped storage part with an internal storage space. One or more openings are formed on the front surface of the storage part and communicate with the storage space. A power output connection part that connects to the power output shaft of the tractor is fixed on the rear surface of the main body. The aforementioned second connecting part includes: One or more insertable parts are formed in such a way that they can be inserted into the opening and then inserted into the storage space through the opening; and The power transmission connection is fixed to the rear surface of the aforementioned insertion component and connected to the power transmission shaft of the aforementioned machine. The aforementioned storage space allows the insertion component inserted through the aforementioned opening to be stored in a laterally rotating manner. An anti-rotation part is provided in the aforementioned storage space, which contacts the side portion of the aforementioned insertion component to transmit power and restrict rotation.

4. The power output coupling device for a tractor according to claim 3, characterized in that, The aforementioned openings are arranged radially at prescribed intervals, forming multiple openings that connect with the aforementioned storage space. The aforementioned insertion components are arranged radially spaced apart so that they can be inserted into the aforementioned plurality of openings respectively, and the aforementioned anti-rotation part is provided between the opening of the aforementioned storage space and the adjacent opening.

5. The power output coupling device for a tractor according to claim 3, characterized in that, Pin fixing holes are formed at corresponding positions of the aforementioned storage part and the aforementioned insertion part, and locking pins are inserted into the pin fixing holes to prevent the insertion part from disengaging from the aforementioned storage part.

6. The power output coupling device for a tractor according to claim 3, characterized in that, A centering component is provided at the center of the insertion component and at the center of the storage part to center them together.

7. A power take-off (PTO) coupling device for a tractor, comprising: The first connecting part is connected to the tractor's power take-off shaft to receive power; and the second connecting part is detachably connected to the first connecting part and to the machine's power transmission shaft to provide the machine with the power transmitted from the first connecting part. The power take-off coupling device of the tractor is characterized in that... The aforementioned first connecting part has a first main body in the shape of a disc, and a power output connection part for engaging with the power output shaft of the tractor is fixed on the rear surface of the first main body, with one or more slots formed around it. The second connecting part has a second main body in the shape of a disc. In order to be locked in the slot, one or more hooks are formed protruding in the circumferential direction on the part facing the first main body, depending on the position and number corresponding to the slot.

8. A power take-off (PTO) coupling device for a tractor, comprising: The first connecting part is connected to the tractor's power take-off shaft to receive power; and the second connecting part is detachably connected to the first connecting part and to the machine's power transmission shaft to provide the machine with the power transmitted from the first connecting part. The power take-off coupling device of the tractor is characterized in that... The aforementioned first connecting part has a first main body in the shape of a disc, a power output connection part for engaging with the power output shaft of a tractor is fixed on the rear surface of the first main body, and one or more hooks are formed protruding forward along the circumference on the front surface. The aforementioned second connecting part has a second main body in the shape of a disc, and along the outer periphery, one or more latches protruding outward are formed according to the position and number corresponding to the latches of the aforementioned first main body.

9. The power take-off coupling device for a tractor according to any one of claims 1, 3, 7, and 8, characterized in that, The rear surface portion of the first connecting part is integrally formed in the power output connection part for engaging with the power output shaft to receive power. The second connecting part is detachably connected to the first connecting part to receive power. A universal joint is integrally fixed on the rear surface, and the universal joint is provided with a shaft connecting part for connecting to the power transmission shaft of the machine.

10. A power take-off coupling device for a tractor, characterized in that, include: The first connecting part, the rear surface portion is integrally formed in the power output connection part for connecting with the power output shaft to receive power; as well as The second connecting part is detachably connected to the first connecting part to receive power, and a universal joint is integrally fixed on the rear surface. The universal joint is provided with a shaft connecting part for connecting to the power transmission shaft of the machine.

11. The power take-off coupling device for a tractor according to any one of claims 1, 3, 7, 8, and 10, characterized in that, The first and second connecting parts are locked by a locking unit to prevent them from disengaging from each other.

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