Agricultural machinery traction device with limiting function

Abstract

The utility model discloses a traction device for agricultural machinery with limiting function, including the traction hook, the traction hook is provided with the limiting mechanism, the limiting mechanism includes the spacing clamp and the clamping mechanism, and the spacing clamp rotatory installation is in the traction hook top, the clamping mechanism includes the plug -in rod and the fixed cover, the plug -in rod is inserted in the traction hook with the spacing clamp, and the fixed cover is inserted in the plug -in rod top, the plug -in rod outer wall is seted up with the movable slot, the movable slot is provided with a plurality of groups, and the movable slot in a plurality of groups all are equipped with the clamping block of sliding, and the inner wall of a plurality of groups clamping block and movable slot all are connected with the push spring of being equipped with, the fixed cover inner wall is fixed with the snap ring, and the combination design of traction device through the traction hook and spacing clamp, and the clamping mechanism that forms the combination of plug -in rod and fixed cover, effectively solved the problem that the rope is easy to fall off in the traditional agricultural machinery traction process.

Description

Technical Field

[0001] This utility model relates to the technical field, and more specifically, to a traction device for agricultural machinery with a limiting function. Background Technology

[0002] In modern agricultural production, various agricultural machines need to be frequently moved and adjusted in the field. An efficient and safe traction system is the fundamental guarantee for ensuring the normal operation of agricultural machinery. Traditional agricultural machinery traction mainly relies on a simple hook and rope structure for connection. This connection method can meet basic needs for short-distance movement on flat roads, but as agricultural machinery develops towards larger and more multifunctional sizes, the limitations of this simple connection method are becoming increasingly apparent.

[0003] Currently, most common traction devices on the market use a combination of a metal hook structure and a flexible rope. They are easy to operate and have low cost. However, these devices generally lack an effective limiting mechanism, which makes it easy for the rope to slip laterally or even completely detach from the hook structure when working on uneven farmland. This not only affects work efficiency but may also cause safety hazards. Existing traction connection methods are prone to instability under such complex stress conditions. Specifically, the position of the rope on the hook structure changes constantly, and in severe cases, it may suddenly fall off, causing work interruption or damage to the connecting parts. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a traction device for agricultural machinery with a limiting function to solve the technical problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a traction device for agricultural machinery with a limiting function, comprising a traction hook, wherein the traction hook is provided with a limiting mechanism, the limiting mechanism comprising a limiting clamp and a locking mechanism, the limiting clamp being rotatably mounted on the top of the traction hook, the locking mechanism comprising an insert rod and a fixing sleeve, the insert rod being inserted into the traction hook and the limiting clamp, the fixing sleeve being inserted into the top of the insert rod, the outer wall of the insert rod having a movable groove, the movable groove having multiple sets, each set of the movable groove having a sliding block slidably disposed therein, each set of the sliding block having a push spring connected between its inner wall and the movable groove, the inner wall of the fixing sleeve having a retaining ring fixedly disposed therein, the outer wall of the fixing sleeve having a sliding groove, a sliding sleeve slidably disposed therein, an unlocking sleeve fixedly disposed on the inner side of the sliding sleeve, and a limiting mechanism being provided on the outer side of the sliding sleeve, the limiting mechanism comprising a limiting sleeve and a rotating sleeve.

[0008] The present invention is further configured such that the limiting sleeve is fixed to the bottom surface of the sliding sleeve, the rotating sleeve rotates outside the fixed sleeve and is fixedly provided with a support rod on its top surface, the support rod is provided in multiple sets and each of the support rods is fixedly provided with a limiting block at its top, the limiting sleeve is provided with an unlocking hole, the unlocking hole is provided in multiple sets and each of the unlocking holes is provided with a limiting hole on its outer side. This structure realizes the ingenious cooperation between the unlocking mechanism and the limiting mechanism. The support rod and the limiting block can be precisely positioned to the unlocking hole position by rotation, and the limiting hole ensures that the limiting block can firmly lock the limiting sleeve when needed, forming a reliable mechanical braking system.

[0009] The present invention is further configured such that the top of the multiple sets of card blocks and the inner side of the retaining ring are provided with inclined surfaces. The inclined surface design allows the card block to be gradually pressed into the movable groove along the inclined surface when it contacts the retaining ring, reducing the insertion resistance. At the same time, it ensures that the card block can firmly lock the retaining ring under the action of the push spring after passing through the inclined surface, thereby improving the reliability and service life of the connection.

[0010] The present invention is further configured such that both the traction hook and the limiting clamp are provided with insertion holes, and the outer sides of the multiple sets of insertion holes are provided with rounded corners. The rounded corner design provides a progressive entry guide for the insertion rod, reduces insertion resistance, avoids jamming and wear caused by sharp edges, eliminates stress concentration points, extends the service life of the insertion holes, and improves the smoothness of the assembly process.

[0011] The present invention is further configured such that a tension spring is connected to the bottom surface of the limiting sleeve, and a thrust bearing is connected between the bottom end of the tension spring and the rotating sleeve. The tension spring provides a constant downward tension force to the limiting sleeve to maintain the stability of the unlocked state, while the thrust bearing allows the rotating sleeve to rotate freely under the action of the tension spring, reducing frictional resistance and realizing interference-free collaborative work between the rotating component and the tensioning component.

[0012] The present invention is further configured such that the limiting blocks are provided in multiple sets and are respectively fixed to the top of the multiple sets of support rods and the outer wall. The distribution design of multiple sets of limiting blocks increases the number and distribution range of limiting points, improves the reliability of limiting, and the dual fixing method of the top of the support rod and the outer wall enhances the structural strength and prevents loosening or breakage during long-term use.

[0013] The present invention is further configured such that a pressing block is fixedly provided on the bottom surface of the rotating sleeve, and multiple sets of pressing blocks are provided. A baffle is fixedly provided on the outer wall of the fixed sleeve. A return spring is connected between the multiple sets of pressing blocks and the baffle. This structure allows the rotating sleeve to automatically return to its original position after rotation by relying on the elastic force of the return spring. The cooperation between the pressing block and the baffle provides a stable support point for the return spring, ensuring that the system can reliably reset after use and can be ready for the next use without additional operation.

[0014] The present invention is further configured such that each of the multiple sets of extrusion blocks has an arc-shaped rod fixedly provided on its outer wall, and the multiple sets of arc-shaped rods are slidably connected to multiple sets of baffles respectively. The design of the arc-shaped rods allows the extrusion blocks to slide along a predetermined arc during rotation, avoiding direct impact and irregular movement. At the same time, the sliding connection with the baffles provides stable guidance and support, reduces shaking and friction during movement, and extends the service life of the mechanism.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a traction device for agricultural machinery with a limiting function, which has the following beneficial effects:

[0017] 1. The traction device, through the combination design of the traction hook and the limiting clamp, combined with the locking mechanism formed by the insert rod and the fixing sleeve, effectively solves the problem of rope easy to fall off during the traction process of traditional agricultural machinery. After the traction rope is installed in the traction hook, the limiting clamp can firmly abut against the top surface of the traction hook and be fixed by the insert rod, so that the traction rope is completely covered and restricted in the internal space, preventing it from sliding laterally or falling off under complex terrain and severe vibration conditions, which significantly improves the traction stability and safety of agricultural machinery when operating in the field.

[0018] 2. The locking mechanism of multiple sets of locking blocks and rings, combined with the elastic reset function of the push spring, realizes quick locking and release between the fixed sleeve and the insertion rod. Under the action of the push spring, the locking block can automatically form a reliable connection with the ring. At the same time, the top of the locking block and the inner side of the ring are designed with a beveled structure, which not only facilitates the smooth pressing of the locking block during assembly, but also ensures a firm abutment in the locked state, thereby improving the connection stability and service life of the entire traction system.

[0019] 3. The limiting mechanism, consisting of a limiting sleeve, a rotating sleeve, a support rod, and a limiting block, along with the setting of unlocking holes and limiting holes, achieves precise control of the sliding sleeve position. The operator only needs to rotate the rotating sleeve to drive the support rod to rotate, and through the synergistic action of the squeezing block and the return spring, the quick transition from locking to unlocking can be completed. At the same time, the cooperation of the tension spring and the thrust bearing ensures the smoothness and reliability of the operation process, greatly improving the working efficiency and convenience of agricultural machinery in frequent traction operations. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a traction device for agricultural machinery with a limiting function according to this utility model.

[0021] Figure 2 This is a schematic diagram of the insertion hole in this utility model;

[0022] Figure 3 This is a schematic diagram showing the disassembled structure of the insert rod and the fixing sleeve in this utility model;

[0023] Figure 4 This is a cross-sectional view of the fixing sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the fixing sleeve and the insertion rod in this utility model.

[0025] In the diagram: 1. Traction hook; 2. Limiting clamp; 3. Insert rod; 4. Fixed sleeve; 5. Movable groove; 6. Locking block; 7. Push spring; 8. Snap ring; 9. Slide groove; 10. Slide sleeve; 11. Unlocking sleeve; 12. Limiting sleeve; 13. Rotating sleeve; 14. Support rod; 15. Limiting block; 16. Unlocking hole; 17. Restricting hole; 18. Insertion hole; 19. Tension spring; 20. Thrust bearing; 21. Pressing block; 22. Baffle; 23. Return spring; 24. Arc rod. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A traction device for agricultural machinery with a limiting function includes a traction hook 1 and a limiting mechanism. The limiting mechanism includes a limiting clamp 2 and a locking mechanism. The limiting clamp 2 is rotatably mounted on the top of the traction hook 1. The locking mechanism includes an insert rod 3 and a fixing sleeve 4. The insert rod 3 is inserted into the traction hook 1 and the limiting clamp 2. The fixing sleeve 4 is inserted into the top of the insert rod 3. The outer wall of the insert rod 3 has a movable groove 5. Multiple sets of movable grooves 5 are provided. Each set of movable grooves 5 has a sliding block 6. Each set of locking blocks 6 has a push spring 7 connected between its inner wall and the movable groove 5. The inner wall of the fixing sleeve 4 is fixedly provided with a retaining ring 8. The outer wall of the fixing sleeve 4 has a sliding groove 9. A sliding sleeve 10 is slidably provided in the sliding groove 9. An unlocking sleeve 11 is fixedly provided on the inner side of the sliding sleeve 10. The outer side of the sliding sleeve 10 is provided with a limiting mechanism, which includes a limiting sleeve 12 and a rotating sleeve 13.

[0030] The limiting sleeve 12 is fixed to the bottom surface of the sliding sleeve 10. The rotating sleeve 13 rotates outside the fixed sleeve 4 and has a support rod 14 fixed on its top surface. The support rod 14 is provided in multiple sets and each of them has a limiting block 15 fixed at its top. The limiting sleeve 12 has an unlocking hole 16. The unlocking hole 16 is provided in multiple sets and each of them has a limiting hole 17 on its outer side. The rotation of the rotating sleeve 13 drives the support rod 14 to move, so that the limiting block 15 is precisely aligned with the unlocking hole 16. The limiting hole 17 provides a fixing point to ensure the system locks stably.

[0031] The top of the multiple sets of locking blocks 6 and the inner side of the locking ring 8 are all provided with inclined surfaces. The inclined surfaces guide the locking blocks 6 to be gradually pressed into the movable groove. When they have completely passed through the inclined surface area, the locking blocks 6 pop out under the action of elasticity, forming a firm lock, which takes into account both smooth insertion and reliable locking.

[0032] Both the traction hook 1 and the limiting clamp 2 are provided with insertion holes 18. The outer sides of the multiple sets of insertion holes 18 are provided with rounded corners. The rounded corner design creates a progressive entry, reduces the insertion resistance of the insertion rod, avoids sharp edges causing jamming and wear, eliminates stress concentration points, and improves the durability of the components.

[0033] A tension spring 19 is connected to the bottom surface of the limiting sleeve 12. A thrust bearing 20 is connected between the bottom end of the tension spring 19 and the rotating sleeve 13. The tension spring 19 provides a stable downward pulling force, and the thrust bearing 20 allows the rotating sleeve 13 to rotate freely under the force, so as to achieve the coordinated cooperation between linear tension and rotational motion.

[0034] The limiting blocks 15 are provided in multiple sets and are respectively fixed to the top and outer wall of multiple sets of support rods 14, which increases the number and distribution range of limiting points and improves the reliability of the system. The double fixing of the top and outer wall enhances the structural strength and prevents loosening or breakage caused by long-term use.

[0035] A pressing block 21 is fixedly provided on the bottom surface of the rotating sleeve 13. Multiple sets of pressing blocks 21 are provided. A baffle 22 is fixedly provided on the outer wall of the fixed sleeve 4. A return spring 23 is connected between the multiple sets of pressing blocks 21 and the baffle 22 respectively. When the rotating sleeve 13 rotates, the pressing block 21 compresses the return spring 23. After release, the return spring 23 pushes the system to automatically return to the initial position without manual reset operation.

[0036] Each of the multiple sets of extrusion blocks 21 has an arc-shaped rod 24 fixedly installed on its outer wall. The multiple sets of arc-shaped rods 24 are slidably connected to multiple sets of baffles 22. The arc-shaped rods 24 guide the extrusion blocks 21 to move along a predetermined trajectory. The sliding connection with the baffles 22 provides stable guidance and support, reducing shaking and friction during the movement.

[0037] In this embodiment, during use, the traction rope is installed inside the traction hook 1, and then the limiting clamp 2 is rotated to abut against the top surface of the traction hook 1. At this time, the multiple sets of insertion holes 18 are aligned, and the insertion rod 3 is inserted into the multiple sets of insertion holes 18. Then, the fixing sleeve 4 is inserted into the top of the insertion rod 3, and the inclined surface provided on the inner side of the retaining ring 8 abuts against the outer wall of the multiple sets of retaining blocks 6, so that the multiple sets of retaining blocks 6 slide into the movable groove 5 and squeeze the multiple sets of push springs 7. When the multiple sets of retaining blocks 6 are fully inserted into the fixing sleeve 4, the multiple sets of push springs 7 push the retaining blocks 6 to reset and make their bottom surface abut against the top surface of the retaining ring 8, thus completing the fixing of the limiting clamp 2 and limiting the traction rope.

[0038] More specifically, when the limiting clamp 2 needs to be disassembled, rotating the rotating sleeve 13 drives multiple sets of pressing blocks 21 to press the reset spring 23, while driving multiple sets of support rods 14 to rotate and causing multiple sets of limiting blocks 15 to move below the unlocking hole 16. The tension spring 19 pulls the limiting sleeve 12 to drive the sliding sleeve 10 to slide along the sliding groove 9, and the unlocking sleeve 11 abuts against multiple sets of locking blocks 6 to make it slide into the movable groove 5. When the limiting sleeve 12 slides between multiple sets of limiting blocks 15, the rotating sleeve 13 is released, and multiple sets of reset springs 23 push the rotating sleeve 13 to make multiple sets of support rods 14 slide into the limiting hole 17 to fix the limiting sleeve 12. Then the fixing sleeve 4 can be separated from the insertion rod 3 to release the fixation of the limiting clamp 2 and release the limitation of the traction rope.

[0039] In summary, when using or operating the entire device: During use, the traction rope is installed inside the traction hook 1. Then, the limiting clamp 2 is rotated to abut against the top surface of the traction hook 1. At this time, the multiple sets of insertion holes 18 are aligned. The insertion rod 3 is inserted into the multiple sets of insertion holes 18, and then the fixing sleeve 4 is inserted into the top of the insertion rod 3. The inclined surface on the inner side of the retaining ring 8 abuts against the outer wall of the multiple sets of retaining blocks 6, causing the multiple sets of retaining blocks 6 to slide into the movable groove 5 and press against the multiple sets of push springs 7. When the multiple sets of retaining blocks 6 are fully inserted into the fixing sleeve 4, the multiple sets of push springs 7 push the retaining blocks 6 to reset and make their bottom surface abut against the top surface of the retaining ring 8, thus completing the fixation of the limiting clamp 2 and limiting the traction rope.

[0040] When the limiting clamp 2 needs to be disassembled, rotating the rotating sleeve 13 drives multiple sets of pressing blocks 21 to press the reset spring 23, while driving multiple sets of support rods 14 to rotate and causing multiple sets of limiting blocks 15 to move below the unlocking hole 16. The tension spring 19 pulls the limiting sleeve 12 to drive the sliding sleeve 10 to slide along the sliding groove 9, and the unlocking sleeve 11 abuts against multiple sets of locking blocks 6 to make it slide into the movable groove 5. When the limiting sleeve 12 slides between multiple sets of limiting blocks 15, the rotating sleeve 13 is released, and multiple sets of reset springs 23 push the rotating sleeve 13 to make multiple sets of support rods 14 slide into the limiting hole 17 to fix the limiting sleeve 12. Then the fixing sleeve 4 can be separated from the insertion rod 3 to release the fixation of the limiting clamp 2 and release the limitation of the traction rope.

[0041] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other well-known connection methods. They will not be elaborated here. For all the fixed connections mentioned above, welding is the preferred option.

[0042] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0043] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be addressed in this utility model.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A traction device for agricultural machinery with a limiting function, comprising a traction hook (1), characterized in that: The traction hook (1) and the limiting mechanism include a limiting clamp (2) and a locking mechanism. The limiting clamp (2) is rotatably mounted on the top of the traction hook (1). The locking mechanism includes an insert rod (3) and a fixing sleeve (4). The insert rod (3) is inserted into the traction hook (1) and the limiting clamp (2). The fixing sleeve (4) is inserted into the top of the insert rod (3). The outer wall of the insert rod (3) is provided with a movable groove (5). Multiple sets of movable grooves (5) are provided. Each set of movable grooves (5) contains a movable groove. A sliding block (6) is provided, and a push spring (7) is provided between the inner wall of the multiple sets of the block (6) and the movable groove (5). A retaining ring (8) is fixedly provided on the inner wall of the fixed sleeve (4). A sliding groove (9) is provided on the outer wall of the fixed sleeve (4). A sliding sleeve (10) is slidably provided in the sliding groove (9). An unlocking sleeve (11) is fixedly provided on the inner side of the sliding sleeve (10). A limiting mechanism is provided on the outer side of the sliding sleeve (10). The limiting mechanism includes a limiting sleeve (12) and a rotating sleeve (13).

2. The traction device for agricultural machinery with limiting function according to claim 1, characterized in that: The limiting sleeve (12) is fixed on the bottom surface of the sliding sleeve (10). The rotating sleeve (13) rotates outside the fixed sleeve (4) and has a support rod (14) fixed on its top surface. The support rod (14) is provided in multiple sets and each of them has a limiting block (15) fixed at its top. The limiting sleeve (12) has an unlocking hole (16) and each of the unlocking holes (16) has a limiting hole (17) on its outer side.

3. A traction device for agricultural machinery with a limiting function according to claim 2, characterized in that: multiple sets Both the top of the card block (6) and the inner side of the card ring (8) are provided with inclined surfaces.

4. A traction device for agricultural machinery with a limiting function according to claim 3, characterized in that: Both the traction hook (1) and the limiting clamp (2) are provided with insertion holes (18), and the outer sides of the multiple sets of insertion holes (18) are provided with rounded corners.

5. A traction device for agricultural machinery with a limiting function according to claim 4, characterized in that: The bottom surface of the limiting sleeve (12) is connected to a tension spring (19), and a thrust bearing (20) is connected between the bottom end of the tension spring (19) and the rotating sleeve (13).

6. A traction device for agricultural machinery with a limiting function according to claim 5, characterized in that: The limiting block (15) is provided in multiple sets and is fixed to the top of the multiple sets of support rods (14) and the outer wall respectively.

7. A traction device for agricultural machinery with a limiting function according to claim 6, characterized in that: The bottom surface of the rotating sleeve (13) is fixedly provided with a pressing block (21), and multiple sets of the pressing block (21) are provided. The outer wall of the fixed sleeve (4) is fixedly provided with a baffle (22), and a return spring (23) is respectively connected between the multiple sets of pressing blocks (21) and the baffle (22).

8. A traction device for agricultural machinery with a limiting function according to claim 7, characterized in that: multiple sets The outer wall of each extrusion block (21) is fixedly provided with an arc-shaped rod (24), and multiple sets of the arc-shaped rods (24) are slidably connected to multiple sets of baffles (22).

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