Quick docking structure of wheeled tractor hitch

Abstract

The utility model discloses a quick butt joint structure of wheeled tractor traction device belongs to tractor accessory technical field, including mutually coordinated connecting block one and connecting block two, the sliding setting of connecting block one has L type block and connecting plate, is fixed with the card post and slide column on the connecting plate, when butt joint, the insertion block on connecting block two pushes L type block and moves to release the card post, make the card post under the driving of connecting plate automatic slip into the limiting slot on connecting block one and complete locking, when dismounting, through pulling connecting plate, drive slide column and push L type block reset, and the card post is ejected limiting slot to realize unlocking. The utility model discloses through the ingenious mechanical linkage, has realized the automatic butt joint and quick locking of traction device, and the operation is simple, and has good dustproof and shock attenuation effect simultaneously, has effectively improved the reliability of connection and operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tractor parts technology, and in particular to a quick docking structure for wheeled tractor traction devices. Background Technology

[0002] As a core power machine in modern agricultural production, wheeled tractors achieve their diverse functions by connecting with different agricultural implements or trailers. The traction device, as a key component for achieving this connection, directly affects the overall operating efficiency and safety of the tractor in terms of its ease of connection and reliability.

[0003] Currently, the connection between wheeled tractors and agricultural implements is a relatively traditional pin-type connection structure. This method requires the driver to reverse the tractor to the vicinity of the implement's drawbar and then visually inspect and repeatedly adjust it to align the connection hole at the rear of the tractor with the drawbar hole of the implement.

[0004] However, in actual operation, due to the large size and weight of the tractor and farm equipment, and the uneven ground of the work site, it is extremely difficult to achieve precise alignment of the two holes. The driver needs to get off the vehicle multiple times to observe and adjust, or rely on the assistance and guidance of others. The whole process is not only time-consuming and laborious, greatly reducing work efficiency, but also places high demands on the physical strength of the operator when aligning and inserting and removing the heavy locking pins, posing certain safety hazards.

[0005] Therefore, this utility model proposes a wheeled tractor traction device to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the prior art of wheeled tractor traction devices, such as complete reliance on manual alignment during docking, cumbersome and laborious locking process, and connection reliability being easily affected by on-site working conditions, this utility model aims to provide a fast docking structure for wheeled tractor traction devices with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a quick docking structure for a wheeled tractor traction device, comprising: a first connecting block, a second connecting block that can dock with the first connecting block, a connecting plate slidably connected to the first connecting block, a locking post and a sliding post fixedly connected to the connecting plate, and a sliding groove formed on the first connecting block for the sliding post to slide; it also includes an L-shaped block slidably disposed within the first connecting block.

[0008] The L-shaped block has a limiting position to block the movement of the locking pin and an unlocking position to release the locking pin.

[0009] Furthermore, the second connecting block is equipped with an insertion block, and the first connecting block has a limiting groove for receiving and locking the locking pin. The end of the sliding pin abuts against the L-shaped block. When the first connecting block and the second connecting block are connected, the insertion block pushes the L-shaped block from the limiting position to the unlocking position. At this time, the locking pin automatically slides into the limiting groove under the action of the connecting plate to achieve locking. When unlocking is required, the connecting plate is pulled in the opposite direction, causing the sliding pin to slide in the sliding groove and push the L-shaped block back to the limiting position, thereby pushing the locking pin out of the limiting groove.

[0010] Preferably, in order to achieve accurate guidance and alignment in the initial stage of docking, a positioning groove is provided on the first connecting block; a positioning block for inserting into the positioning groove is correspondingly fixedly connected on the second connecting block. The priority cooperation between the positioning block and the positioning groove provides a reliable alignment basis for the subsequent automatic locking action.

[0011] Preferably, in order to enhance the stability of the connecting plate during the sliding process and provide auxiliary guidance, a slider is also fixedly connected to the connecting plate; a corresponding fixing groove 2 is provided on the connecting block 1 for the slider to slide into, which ensures the smooth and stable movement trajectory of the connecting plate during the automatic locking process.

[0012] Preferably, in order to further enhance the overall connection strength and impact resistance, a fixing block is also fixedly connected to the second connecting block; the first connecting block is provided with a fixing groove for the fixing block to be inserted into, which forms an additional rigid support point while the main locking mechanism is locked, effectively sharing the complex stress in the traction operation.

[0013] Preferably, the present invention also includes a dustproof and shock-absorbing mechanism, which includes a box body. The box body covers the core connection and locking part between the connecting block and the connecting plate, forming a sealed protective space to prevent dust, mud and other impurities from entering and causing the internal moving parts to jam or wear.

[0014] Preferably, as a further improvement to the dustproof and shock-absorbing mechanism, the dustproof and shock-absorbing mechanism also includes a pneumatic shock absorber rod. One end of the pneumatic shock absorber rod is fixed to the bottom of the housing, and the other end is fixed to the connecting block. This is used to effectively absorb and buffer impact vibrations when the tractor is traveling on bumpy roads or performing field operations, thereby protecting the stability and service life of the connecting structure and related components.

[0015] Preferably, in order to achieve reliable closure of the box, a locking block is provided on the box, and a second locking slot is provided on the connecting block for the locking block to be inserted. The two are engaged to complete the initial closure and positioning of the box.

[0016] Preferably, as a specific implementation of the box locking method, the box body is also provided with a sliding groove and a locking slot 1; the dustproof and shock-absorbing mechanism also includes a connecting rod and a locking button fixedly connected to the connecting rod. The locking button passes through the sliding groove. By manually sliding the connecting rod, the locking button can be moved along the sliding groove trajectory and finally locked into the locking slot 1, thereby firmly locking the box body and preventing the box body from accidentally opening under severe vibration.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of manual alignment and cumbersome operation required for docking tractor traction devices in the prior art by setting up a mechanical linkage structure in which the L-shaped block is moved by the insertion block to automatically release the locking column and the locking is completed by the limiting groove. It achieves automatic docking and fast locking, significantly improves work efficiency and reduces labor intensity.

[0018] 2. This utility model solves the problem in the prior art that the connecting mechanism is easily corroded by dust and subjected to vibration impact due to exposure to harsh working conditions, which can lead to jamming or loosening. By setting up a box body that covers the core locking mechanism and a pneumatic shock-absorbing rod assembled between the box body and the connecting block, it achieves dust prevention and shock absorption, ensuring the long-term stability and reliability of the device.

[0019] 3. This utility model solves the problems of difficult alignment and insufficient connection strength of a single locking point when docking traction devices in the prior art by setting positioning blocks and positioning grooves for initial guidance, and coordinating the setting of fixing blocks, sliders and corresponding fixing grooves to form multi-point locking. It achieves precise guidance and multi-point coordinated locking, and significantly enhances the firmness and impact resistance of the connection. Attached Figure Description

[0020] Figure 1 A perspective view of the front side of the connecting block of the quick docking structure of the wheeled tractor traction device proposed in this utility model. Figure 2 This is a partial structural exploded view of the connecting plate of the quick docking structure of the wheeled tractor traction device proposed in this utility model; Figure 3 This is a partial structural diagram of the positioning block of the quick docking structure of the wheeled tractor traction device proposed in this utility model; Figure 4 This is a partial structural diagram of the box body of the quick docking structure of the wheeled tractor traction device proposed in this utility model.

[0021] Legend: 1. Connecting block one; 2. Dustproof and shock-absorbing mechanism; 201. Locking block; 202. Locking slot one; 203. Connecting rod; 204. Box body; 205. Slide groove; 206. Locking button; 207. Locking slot two; 208. Air pressure shock-absorbing rod; 3. Locking column; 4. Slide column; 5. Moving groove; 6. Insertion block; 7. Limiting groove; 8. Positioning groove; 9. Connecting plate; 10. Connecting block two; 11. Fixing block; 12. Slider; 13. L-shaped block; 14. Fixing groove two; 15. Positioning block; 16. Fixing groove one. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Example

[0023] Please refer to Figures 1 to 4 This utility model provides a quick docking structure for a wheeled tractor traction device, which aims to solve the problems in the prior art such as difficulty in aligning the tractor and the agricultural implement traction device, cumbersome and laborious locking operation, and connection reliability being easily affected by working conditions.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, the quick docking structure of the wheeled tractor traction device includes a connecting block 1 that cooperates with each other and a connecting block 2 10 that can dock with the connecting block 1. A connecting plate 9 is slidably connected inside the connecting block 1. A locking post 3 and a sliding post 4 are fixedly connected to the upper surface of the connecting plate 9. A sliding groove 5 for the sliding post 4 to slide is correspondingly opened on the connecting block 1.

[0025] An L-shaped block 13 is slidably disposed within connecting block 1, having a limiting position for blocking the movement of the locking pin 3 by its own structure, and an unlocking position where it no longer blocks the locking pin 3 after its own displacement. To achieve automatic locking, an insertion block 6 is fixedly connected to connecting block 2 10. When connecting block 1 1 and connecting block 2 10 approach each other for mating, the insertion block 6 first inserts into connecting block 1 1 and pushes the L-shaped block 13, causing the L-shaped block 13 to move from the limiting position to the unlocking position; to achieve a fixed locked state... A limiting groove 7 is also provided on the connecting block 1. When the L-shaped block 13 is pushed to the unlock position, the originally blocked locking pin 3 can slide smoothly into the limiting groove 7 under the action of the connecting plate 9, thereby locking the connecting block 1 and the connecting block 2 10. In order to achieve the unlocking operation, the end of the sliding pin 4 abuts against the L-shaped block 13. When it is necessary to disassemble the device, by pulling the connecting plate 9 upward in the opposite direction, the connecting plate 9 drives the sliding pin 4 to slide in the sliding groove 5. The sliding pin 4 then pushes the L-shaped block 13 to reset from the unlock position to the limiting position, preparing for the next docking.

[0026] Please refer to Figure 3 A positioning block 15 is fixedly connected to the second connecting block 10, and a positioning groove 8 is provided on the first connecting block 1 for the positioning block 15 to be inserted. In the initial stage of the docking operation, the positioning block 15 is inserted into the positioning groove 8 first, realizing the initial alignment between the first connecting block 1 and the second connecting block 10, and providing reliable guidance for the smooth insertion of the subsequent insertion block 6 and the precise triggering of the L-shaped block 13.

[0027] Please refer to Figure 2 and Figure 3 A slider 12 is fixedly connected to the upper surface of the connecting plate 9, and a fixing block 11 is fixedly connected to the connecting block 10. The connecting block 11 has a fixing groove 2 14 for the slider 12 to slide into, and a fixing groove 16 for the fixing block 11 to be inserted into. When the connecting plate 9 drives the locking post 3 to slide into the limiting groove 7, the slider 12 also slides into the fixing groove 2 14 at the same time, which plays an auxiliary guiding role in the sliding process of the connecting plate 9. The fixing block 11 on the connecting block 10 is inserted into the fixing groove 16, forming an additional mechanical lock, which effectively shares the shear force and tensile force borne by the main locking structure, thereby greatly improving the firmness and impact resistance of the entire traction device connection.

[0028] As a preferred embodiment, in order to protect the internal precision automatic locking structure from dust corrosion under the harsh working conditions of tractor operation, and to effectively buffer the impact vibration during travel and operation, please refer to... Figure 4The wheeled tractor traction device also includes a dustproof and shock-absorbing mechanism 2. The dustproof and shock-absorbing mechanism 2 includes a housing 204. The housing 204 covers the core connection and locking part between the connecting block 1 and the connecting plate 9, forming a closed protective space. The dustproof and shock-absorbing mechanism 2 also includes a pneumatic shock absorber 208. One end of the pneumatic shock absorber 208 is fixed to the bottom of the housing 204, and the other end is fixed to the connecting block 1, which is used to absorb and dissipate vibration energy from the ground.

[0029] As a further optimization of the housing 204, to achieve convenient opening and secure locking of the housing 204, please refer to... Figure 1 and Figure 4 The box body 204 is integrally formed with a locking block 201, and the connecting block 1 is provided with a corresponding locking groove 207 for the locking block 201 to be engaged. The cooperation of the two achieves the initial closing and positioning of the box body 204. In order to prevent the box body 204 from accidentally opening during vibration, the box body 204 is also provided with a sliding groove 205 and a locking groove 202. The dustproof and shock-absorbing mechanism 2 also includes a connecting rod 203 and a locking button 206 fixedly connected to the connecting rod 203. The locking button 206 passes through the sliding groove 205. The operator can slide the connecting rod 203 to drive the locking button 206 to slide along the track of the sliding groove 205 and finally engage in the locking groove 202, thereby securely locking the box body 204 in the closed state.

[0030] Working principle: When installing, first align the second connecting block 10 with the first connecting block 1. The positioning block 15 on the second connecting block 10 will be inserted into the positioning groove 8 of the first connecting block 1, completing the initial alignment and guidance of the two parts. As they continue to approach each other, the insertion block 6 on the second connecting block 10 will push the L-shaped block 13 inside the first connecting block 1, forcing the L-shaped block 13 to slide from the default limit position to the unlock position. This action removes the physical obstruction of the locking post 3 by the L-shaped block 13. After the locking post 3 is released, the connecting plate 9 will automatically slide forward, driving the locking post 3 to slide in and be firmly locked by the limit groove 7. At the same time, the slider 12 on the connecting plate 9 will also slide into the second fixing groove 14, and the fixing block 11 on the second connecting block 10 will be locked into the first fixing groove 16. Through multi-point locking, fast and reliable automatic locking installation is achieved. When disassembly and separation are required, the operator pulls the connecting plate 9 upwards. The connecting plate 9 drives the sliding column 4 to slide in the sliding groove 5. The sliding column 4 then pushes the L-shaped block 13 to slide in the opposite direction, so that the L-shaped block 13 is reset from the unlocked position to the limit position. During the reset process, the L-shaped block 13 will push the locking column 3 out of the limit groove 7, thereby releasing all locking states. The connecting block 1 and the connecting block 2 can be easily separated. The whole process is simple to operate and does not require the use of additional tools. During tractor operation, to protect the internal structure, the housing 204 is placed over the connecting part and positioned by the cooperation of the locking block 201 and the second locking slot 207. Then, the sliding connecting rod 203 is slid to make the locking button 206 slide along the sliding groove 205 and lock into the first locking slot 202, locking the housing 204 and achieving the dustproof function. At the same time, the air pressure shock absorber 208 fixed between the housing 204 and the first connecting block 1 will continuously absorb the vibration generated during operation, protecting the stability and life of the connecting structure.

Claims

1. A quick docking structure for a wheeled tractor traction device, comprising a first connecting block (1) and a second connecting block (10) that can dock with the first connecting block (1), wherein a connecting plate (9) is slidably connected to the first connecting block (1), a locking pin (3) and a sliding pin (4) are fixedly connected to the connecting plate (9), and a sliding groove (5) for the sliding pin (4) is correspondingly provided on the first connecting block (1); characterized in that, The quick docking structure of the wheeled tractor traction device also includes an L-shaped block (13) that is slidably disposed within the connecting block (1). The L-shaped block (13) has a limiting position for blocking the movement of the locking pin (3) and an unlocking position for releasing the locking pin (3).

2. The quick-connection structure of the wheeled tractor traction device according to claim 1, characterized in that, The second connecting block (10) is provided with an insertion block (6) for pushing the L-shaped block (13) from the limiting position to the unlocking position when the first connecting block (1) and the second connecting block (10) are connected. The first connecting block (1) is also provided with a limiting groove (7) for receiving and locking the locking post (3) when the L-shaped block (13) is in the unlocking position. The end of the sliding post (4) abuts against the L-shaped block (13) for sliding along the sliding groove (5) and pushing the L-shaped block (13) back to the limiting position when the connecting plate (9) is pulled in the opposite direction.

3. The quick-connection structure of the wheeled tractor traction device according to claim 1, characterized in that, The first connecting block (1) is provided with a positioning groove (8), and the second connecting block (10) is fixedly connected with a positioning block (15) for inserting into the positioning groove (8).

4. The quick-connection structure of the wheeled tractor traction device according to claim 1, characterized in that, A slider (12) is also fixedly connected to the connecting plate (9), and a fixing groove (14) is also provided on the connecting block (1) for the slider (12) to slide into.

5. The quick-connection structure for the wheeled tractor traction device according to claim 1, characterized in that, A fixing block (11) is also fixedly connected to the second connecting block (10), and a fixing groove (16) is also provided on the first connecting block (1) for the fixing block (11) to be inserted.

6. The quick-connection structure of the wheeled tractor traction device according to claim 1, characterized in that, The wheeled tractor traction device also includes a dustproof and shock-absorbing mechanism (2), which includes the connecting block (1) and the housing (204).

7. The quick-connection structure for a wheeled tractor traction device according to claim 6, characterized in that, The dustproof and shock-absorbing mechanism (2) also includes a pneumatic shock-absorbing rod (208), one end of which is fixed to the bottom of the box (204), and the other end is fixed to the connecting block (1).

8. The quick-connection structure of the wheeled tractor traction device according to claim 6, characterized in that, The box body (204) is provided with a locking block (201), and the connecting block (1) is provided with a second slot (207) for the locking block (201) to be inserted into, for closing the box body (204).

9. The quick-connection structure for a wheeled tractor traction device according to claim 8, characterized in that, The box body (204) is also provided with a sliding groove (205) and a first slot (202). The dustproof and shock-absorbing mechanism (2) also includes a connecting rod (203) and a snap button (206) fixedly connected to the connecting rod (203). The snap button (206) passes through the sliding groove (205) and is used to slide along the sliding groove (205) under the drive of the connecting rod (203) and snap into the first slot (202) to lock the box body (204).

Images