CN220586790U - Connecting device for agricultural machinery - Google Patents
Connecting device for agricultural machinery Download PDFInfo
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- CN220586790U CN220586790U CN202322265425.2U CN202322265425U CN220586790U CN 220586790 U CN220586790 U CN 220586790U CN 202322265425 U CN202322265425 U CN 202322265425U CN 220586790 U CN220586790 U CN 220586790U
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- connecting piece
- piece
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- limiting
- locking pin
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- 230000000670 limiting effect Effects 0.000 claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims description 17
- 239000000725 suspension Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000003637 basic solution Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a connecting device for an agricultural machine, which comprises a first connecting piece, a second connecting piece and a locking mechanism, wherein the first connecting piece and the second connecting piece are detachably connected through the locking mechanism; the first connecting piece is provided with a locking pin, the second connecting piece is provided with a locking groove matched with the locking pin in a clamping way, and the second connecting piece is movably connected with a limiting piece used for limiting the locking pin to be separated from the locking groove. The problem of easy emergence relative movement when machines and plants and agricultural machinery organism connection among the prior art has been solved to this scheme.
Description
Technical Field
The utility model relates to a suspension connection device specially suitable for an agricultural machine body and an agricultural machine tool, in particular to a connection device for an agricultural machine.
Background
The connecting device for agricultural machinery is a device for connecting an operating tool with an agricultural machinery body (an agricultural machinery chassis) so that the agricultural machinery body can drive the tool to carry out cultivation movement. The existing agricultural machinery is generally provided with a plurality of machines with different functions, so that the machines are required to be detached and replaced frequently when in use. The existing connecting device for the machine tool and the agricultural machine body generally adopts a three-point suspension connecting rod type structure.
Chinese patent document CN214155306U discloses a multifunctional suspension device for a tractor, comprising: the device comprises an upper pull rod, a left pull rod, a right pull rod, a left limit rod, a right limit rod, a left lifting rod and a right lifting rod, wherein one ends of the left lifting rod and the left limit rod are respectively arranged on the left pull rod, one ends of the right limit rod and the right lifting rod are respectively arranged on the right pull rod, the suspension device further comprises a hinged ball head, two pin holes with different diameters are designed on the hinged ball head, the hinged ball head is pressed into the holes at the end parts of the upper pull rod and the lower pull rod by adopting a rolling method, the hinged ball head can flexibly rotate in the holes, and the corresponding pin holes on the hinged ball head are connected with a matched farm tool or a test frame according to the requirements of a tractor or an agricultural machine.
In practical use, the connecting device with the three-point suspension connecting rod structure is adopted to connect, so that the relative position between the machine tool and the machine body is difficult to maintain stable, and the connecting device with the three-point suspension connecting rod structure is not suitable for some situations in which the displacement between the machine tool and the machine body needs to be limited. It is therefore necessary to design a new connection device.
Disclosure of Invention
The utility model aims to provide a connecting device for an agricultural machine, which solves the problem that in the prior art, relative movement is easy to occur when an implement is connected with an agricultural machine body.
In order to achieve the above object, a basic solution of the present utility model provides a connection device for an agricultural machine, including a first connection member and a second connection member, and further including a locking mechanism, where the first connection member and the second connection member are detachably connected through the locking mechanism; the first connecting piece is provided with a locking pin, the second connecting piece is provided with a locking groove matched with the locking pin in a clamping way, and the second connecting piece is movably connected with a limiting piece used for limiting the locking pin to be separated from the locking groove.
The beneficial effect of this basic scheme lies in: when the device is used, the first connecting piece is connected and fixed with the machine body, the second connecting piece is connected and fixed with the machine body, the first connecting piece and the second connecting piece are connected together through the combined action of the locking mechanism, the locking pin, the locking groove and the limiting piece, so that the mutual fixation of the first connecting piece and the second connecting piece is realized, the connection and fixation of the machine body and the agricultural machine body can be realized, and compared with the connecting device adopting the connecting rod type structure of three-point suspension in the prior art, the situation of relative movement between the machine body and the agricultural machine body can be greatly reduced, and the connection requirement of displacement between the machine body and the machine body can be further met.
Preferably, the stopper has a blocking portion for restricting the removal of the locking pin from the opening of the locking groove. By adopting the arrangement, the blocking part is used for blocking the locking pin to move out of the opening of the locking groove, so that the limiting part is simpler in structure for limiting the separation of the locking pin and the locking groove, and the reliability of the limiting part is improved.
Preferably, a guide surface for guiding the locking pin when the locking pin is locked in the locking groove is arranged at the end part of the blocking part, and a guide opening is formed between one side edge of the opening of the locking groove and the guide surface. By adopting the arrangement, when the locking pin is clamped into the locking groove, the limiting piece is pushed to move to give way through contact with the guide surface, so that the clamping operation of the locking pin is facilitated, and the convenience of operation is improved.
Preferably, the movable connection mode between the limiting piece and the second connecting piece is hinged. By adopting the arrangement, the limiting piece can change the position of the blocking part by swinging around the hinge point to realize whether the locking pin is limited or not, so that the operation convenience of the limiting piece is improved.
Preferably, a reset elastic piece is connected between the limiting piece and the second connecting piece. By adopting the arrangement, after the limiting piece moves from the position for limiting the separation of the locking pin and the locking groove, the limiting piece has a trend of restoring to the original position under the action of the restoring elastic piece, so that after the acting force for enabling the limiting piece to move disappears, the limiting piece can be restored in time, and the blocking part of the limiting piece automatically returns to the position for limiting the separation of the locking pin and the locking groove, thereby being beneficial to improving the operation convenience.
Preferably, the return elastic member is a torsion spring. The torsional spring is convenient to install and set, and especially when the limiting piece is hinged, the torsional spring can enable the swing of the limiting piece to be more reliable, so that the reliability of the limiting piece is improved.
Preferably, the second connecting piece is connected with an operating mechanism for releasing the limiting effect of the limiting piece on the locking pin. By adopting the arrangement, the limiting effect of the limiting piece on the locking pin is relieved through the operating mechanism, so that the operation convenience is improved, and a user can conveniently operate when the tool is replaced.
Preferably, the operating mechanism comprises an operating rod, the middle part of the operating rod is hinged with the second connecting piece, one end of the operating rod is in sliding fit with the limiting piece, and an unlocking positioning groove in concave-convex fit with the end part of the operating rod is formed in the limiting piece. By adopting the arrangement, the operation rod is rotated to push the limiting piece to move, and when the end part of the operation rod is inserted into the unlocking positioning groove, the limiting piece is in a completely unrestricted state for the locking pin, and the limiting piece is in a stable state under the combined action of the elastic resetting piece and the operation rod, so that the locking pin can be conveniently moved out of the locking groove for operation.
Preferably, the locking mechanism comprises a pin shaft connected between the first connecting piece and the second connecting piece, a protruding part protruding towards the direction of the pin shaft is arranged at the opening of the locking groove, and the minimum distance from the edge of the protruding part to the center of the pin shaft is smaller than the maximum distance from the edge of the locking pin to the center of the pin shaft. By adopting the arrangement, when the first connecting piece and the second connecting piece are connected by the pin shaft, the locking pin is also clamped in the locking groove, and at the moment, even if the limiting piece loses the limiting effect on the locking pin, the locking pin cannot be moved out of the locking groove due to the existence of the protruding part, so that the first connecting piece and the second connecting piece are prevented from being accidentally disconnected when the limiting piece fails.
The utility model has the following beneficial effects:
1. the utility model can greatly reduce the relative movement between the machine tool and the machine tool, and does not need to use a universal joint, thereby simplifying the structure; during connection operation, the limiting piece is pushed away by the locking pin directly and clamped into the locking groove, and the limiting piece automatically returns under the action of the reset elastic piece, so that the step of aligning the locking pin with the corresponding hole is omitted, and further, the quick connection between the machine tool and the agricultural machine body is realized.
2. When the machine tool is taken down from the agricultural machine body, the limiting effect of the limiting piece on the locking pin is released, so that the locking pin is conveniently moved out of the locking groove, and the convenience in operation when the machine tool is taken down from the agricultural machine body is improved. The utility model can also prevent the accidental disengagement in case of failure of the limiting member.
Drawings
FIG. 1 is a schematic view of an embodiment of a coupling device for an agricultural machine according to the present utility model in a locked state;
FIG. 2 is an axial view of the locking pin of FIG. 1;
FIG. 3 is a schematic view of an embodiment of a coupling device for an agricultural machine according to the present utility model in an unlocked state;
FIG. 4 is an axial view of the locking pin of FIG. 3;
fig. 5 is a cross-sectional view A-A of fig. 4.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: the locking device comprises a first connecting piece 1, a second connecting piece 2, a pin shaft 3, a handle 4, an operating rod 5, a reset elastic piece 6, a limiting piece 7, an unlocking positioning groove 71, a locking positioning groove 72, a blocking part 73, a guide surface 74, a locking pin 8, a locking groove 9 and a protruding part 10.
An embodiment is substantially as shown in figures 1 to 5: a connecting device for agricultural machinery, includes first connecting piece 1 and second connecting piece 2, and first connecting piece 1 is used for being connected fixedly with the machines, and second connecting piece 2 is used for being connected fixedly with the organism, can realize the connection of machines and organism through the connection of first connecting piece 1 and second connecting piece 2. In this embodiment, the first connector 1 and the second connector 2 are each plate-shaped. The connection device further comprises a locking mechanism by means of which the first connection piece 1 and the second connection piece 2 are detachably connected. In this embodiment, the locking mechanism includes a pin 3, and the first connecting piece 1 and the second connecting piece 2 are respectively provided with a connecting hole in clearance fit with the pin 3, and the pin 3 is inserted into the connecting hole to connect the first connecting piece 1 and the second connecting piece 2. When the pin shaft 3 is a cylindrical pin shaft 3, the first connecting piece 1 and the second connecting piece 2 can be hinged with each other through the pin shaft 3.
The first connecting piece 1 is provided with a locking pin 8, the second connecting piece 2 is provided with a locking groove 9 which is matched with the locking pin 8 in a clamping way, and the second connecting piece 2 is movably connected with a limiting piece 7 which is used for limiting the locking pin 8 to be separated from the locking groove 9. In this embodiment, the locking pin 8 has a cylindrical shape, and the bottom surface of the locking groove 9 has an arc surface, so that the locking pin 8 can smoothly rotate in the locking groove 9. In this embodiment, the movable connection manner between the limiting member 7 and the second connecting member 2 is hinged. Of course, in other embodiments, the movable connection between the limiting member 7 and the second connecting member 2 may be a sliding connection. In this embodiment, the stopper 7 has a blocking portion 73 for restricting the removal of the locking pin 8 from the opening of the locking groove 9, and when the locking pin 8 is located in the locking groove 9, the blocking portion 73 is located at the opening of the locking groove 9 with the movement of the stopper 7, thereby blocking the removal of the locking pin 8 from the locking groove 9. A reset elastic piece 6 is connected between the limiting piece 7 and the second connecting piece 2. In this embodiment, the reset elastic member 6 is preferably a torsion spring, and the limiting member 7 hinged by the torsion spring resets after displacement, so that the torsion spring is simpler and more convenient to set, and the reliability is improved.
In order to further facilitate the replacement operation, the end of the blocking portion 73 is provided with a guide surface 74 for guiding the locking pin 8 when it is caught in the locking groove 9, and a guide opening is formed between a side edge of the opening of the locking groove 9 and the guide surface 74. When the locking pin 8 is clamped into the locking groove 9, the locking pin 8 moves along the guide opening to push the blocking part 73 to move, so that the limiting piece 7 is pushed to deflect to be away, and then the operation can be completed without moving the limiting piece 7 when the locking pin 8 is clamped into the locking groove 9, and the operation convenience is improved.
In order to further facilitate the replacement operation, an operation mechanism for releasing the restriction of the lock pin 8 by the stopper 7 is connected to the second connector 2. In this embodiment, the operating mechanism includes an operating lever 5, the middle part of the operating lever 5 is hinged with the second connecting piece 2, one end of the operating lever 5 is in sliding fit with a limiting piece 7, and an unlocking positioning groove 71 which is in concave-convex fit with the end of the operating lever 5 is arranged on the limiting piece 7. The operating rod 5 forms a lever connected with the second connecting piece 2, and the handle 4 is connected with one end of the operating rod 5 far away from the limiting piece 7 to facilitate pulling of the operating rod 5. The operation lever 5 is rotated by pulling one end of the operation lever 5 away from the limit piece 7, so that the operation lever 5 pushes the limit piece 7 to rotate, and the limit piece 7 drives the blocking portion 73 to be away from the position of the limit locking pin 8, until the operation lever 5 is inserted into the unlocking positioning groove 71, the limit piece 7 is in a state of completely losing the limit of the locking pin 8. The limiting piece 7 can be further provided with a locking positioning groove 72, when the limiting piece 7 is in a state of limiting the locking pin 8, the operating rod 5 is also inserted into the locking positioning groove 72, so that the limiting piece 7 is in a relatively stable state under the combined action of the reset elastic piece 6 and the operating rod 5. When the locking pin 8 is not clamped into the locking groove 9, the limiting piece 7 is still in the limiting position, so that the position of the limiting piece 7 when the locking pin 8 is not clamped into the locking groove 9 is kept consistent, and the locking pin 8 is conveniently clamped into the locking groove 9 by pushing the limiting piece 7 to move.
In order to prevent accidental disengagement, the opening of the locking groove 9 is provided with a protrusion 10 protruding towards the direction of the pin shaft 3, and the minimum distance L from the edge of the protrusion 10 to the center of the pin shaft 3 is smaller than the maximum distance M from the edge of the locking pin 8 to the center of the pin shaft 3. When the limiting piece 7 loses the limiting effect on the locking pin 8, the locking pin 8 and the pin shaft 3 of the locking mechanism are connected between the first connecting piece 1 and the second connecting piece 2 together, and when the locking pin 8 slides along the locking groove 9 by taking the pin shaft 3 as the center, the locking pin 8 is blocked by the protruding part 10 and is difficult to move out of the locking groove 9 due to the existence of the protruding part 10, so that the occurrence of accidental disengagement is avoided.
The specific implementation process is as follows: the first connecting piece 1 is fixedly connected with the machine tool, the second connecting piece 2 is fixedly connected with the machine body of the agricultural machine, and a specific fixed connection mode can adopt a welding mode, a bolt connection mode or an integrated forming mode and the like.
When the machine tool and the agricultural machine body are required to be connected, the locking pin 8 is clamped into the locking groove 9 from the opening end of the locking groove 9. In the process of clamping the locking pin 8 into the locking groove 9, the locking pin 8 passes through a guide hole formed by the guide surface 74 and one side edge of the opening of the locking groove 9, so that the locking pin 8 pushes the limiting piece 7 to rotate through the guide surface 74 to move for abdication. When the locking pin 8 is completely clamped in the locking groove 9, the limiting piece 7 is reset under the action of the reset elastic piece 6, so that the blocking part 73 is blocked at the opening of the locking groove 9 to limit the locking pin 8 to be moved out of the locking groove 9. And then the positions of the first connecting piece 1 and the second connecting piece 2 are adjusted to align the connecting holes of the pin shafts 3 for connecting the locking mechanism, and finally the pin shafts 3 are inserted into the connecting holes, so that the first connecting piece 1 and the second connecting piece 2 are connected, and the machine is connected with an agricultural machine body.
When the machine tool and the agricultural machine body need to be disassembled, one end, which is in contact with the limiting piece 7, of the operating rod 5 slides into the unlocking positioning groove 71 from the locking positioning groove 72 by pulling the operating rod 5, and the limiting piece 7 rotates to drive the blocking part 73 to leave the opening end of the locking groove 9 in the rotating process of the operating rod 5, so that the limiting piece 7 loses the limiting effect on the locking pin 8. The pin shaft 3 of the locking mechanism is removed from between the first connecting piece 1 and the second connecting piece 2, and then the locking pin 8 is moved out of the locking groove 9, so that the first connecting piece 1 and the second connecting piece 2 can be separated, and the implement and the agricultural machine body can be separated.
The connecting device solves the problems of inconvenient connection between the machine and the agricultural machine body and low replacement speed in the prior art.
The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent.
Claims (9)
1. A connecting device for agricultural machinery, includes first connecting piece and second connecting piece, its characterized in that: the first connecting piece and the second connecting piece are detachably connected through the locking mechanism; the first connecting piece is provided with a locking pin, the second connecting piece is provided with a locking groove matched with the locking pin in a clamping way, and the second connecting piece is movably connected with a limiting piece used for limiting the locking pin to be separated from the locking groove.
2. A connection device for an agricultural machine according to claim 1, wherein: the limiting piece is provided with a blocking part for limiting the locking pin to move out of the opening of the locking groove.
3. A connection device for an agricultural machine according to claim 2, wherein: the end of the blocking part is provided with a guide surface for guiding the locking pin when the locking pin is clamped into the locking groove, and a guide opening is formed between one side edge of the opening of the locking groove and the guide surface.
4. A connection device for an agricultural machine according to claim 3, wherein: the movable connection mode between the limiting piece and the second connecting piece is hinged.
5. A connection device for an agricultural machine according to any one of claims 1 to 4, wherein: and a reset elastic piece is connected between the limiting piece and the second connecting piece.
6. A connection device for an agricultural machine according to claim 5, wherein: the reset elastic piece is a torsion spring.
7. A connection device for an agricultural machine according to claim 6, wherein: and an operating mechanism for releasing the limiting effect of the limiting piece on the locking pin is connected to the second connecting piece.
8. A connection device for an agricultural machine according to claim 7, wherein: the operating mechanism comprises an operating rod, the middle part of the operating rod is hinged with the second connecting piece, one end of the operating rod is in sliding fit with the limiting piece, and an unlocking positioning groove which is in concave-convex fit with the end part of the operating rod is formed in the limiting piece.
9. A connection device for an agricultural machine according to claim 8, wherein: the locking mechanism comprises a pin shaft connected between the first connecting piece and the second connecting piece, a protruding part protruding towards the direction of the pin shaft is arranged at the opening of the locking groove, and the minimum distance from the edge of the protruding part to the center of the pin shaft is smaller than the maximum distance from the edge of the locking pin to the center of the pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322265425.2U CN220586790U (en) | 2023-08-23 | 2023-08-23 | Connecting device for agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322265425.2U CN220586790U (en) | 2023-08-23 | 2023-08-23 | Connecting device for agricultural machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220586790U true CN220586790U (en) | 2024-03-15 |
Family
ID=90174874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322265425.2U Active CN220586790U (en) | 2023-08-23 | 2023-08-23 | Connecting device for agricultural machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220586790U (en) |
-
2023
- 2023-08-23 CN CN202322265425.2U patent/CN220586790U/en active Active
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