Traction device for tractor

Abstract

The utility model relates to the technical field of tractor accessories, in particular to a tractor traction device which comprises a traction rod and a traction block, a traction groove with a forward opening is formed in the rear side face of the traction block, a buffering device is installed in the traction groove, and a one-way limiting device is arranged at the opening of the traction groove. The traction rod is detachably clamped in the traction groove through a one-way limiting device, and the traction rod is connected with the one-way limiting device through a fixing device. According to the tractor traction device, after the traction block and the traction rod are connected with the tractor head and the tractor hopper of the tractor respectively, clamping can be directly completed during connection and installation, manual installation after adjustment by personnel is not needed, and connection is more convenient. And through the arrangement of the buffering device, the impact or pulling force borne by the device is relieved, damage to the device is reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor accessories, in particular to a traction device for a tractor. Background Art

[0002] A tractor is a self-propelled power machine used to complete various mobile operations. It consists of systems or devices such as engine, transmission, travel, steering, hydraulic suspension, power output, electrical instruments, driving controls and traction. The main function of the tractor traction device is to connect to traction farm implements or trailer buckets.

[0003] Traditional tractor traction devices are located between the front of the tractor and the cargo bed. One set of traction frames is mounted at the rear of the tractor, while the other is mounted at the front of the cargo bed. When in use, the two traction frames are simply docked together to complete the connection between the tractor and the cargo bed. Conversely, the tractor and cargo bed can be separated, making them more convenient to use.

[0004] However, most existing connection methods utilize a snap ring and a pin. Simply snapping the snap ring onto the pin allows for positional fixation. However, this method requires the snap ring and pin to align with each other, and then the operator manually connects the snap ring and pin. During this process, the operator constantly adjusts the position of the frame and needs to check the position of the traction frame, making operation inconvenient. Furthermore, traditional rigid connection methods create significant internal stress when the tractor brakes suddenly or is impacted, making the traction device susceptible to damage and shortening its service life. Summary of the Invention

[0005] The purpose of the utility model is to provide a tractor traction device which is convenient for connecting the tractor head and the bucket and can perform a certain buffering effect in order to solve the above problems.

[0006] To achieve the above-mentioned purpose, the utility model discloses a traction device for a tractor, comprising a traction rod and a traction block, wherein a traction groove opening forward is provided on the rear side of the traction block, a buffer device is installed in the traction groove, and a one-way limit device is provided at the opening of the traction groove, the traction rod is detachably clamped in the traction groove through the one-way limit device, and the traction rod is connected to the one-way limit device through a fixing device.

[0007] With the above structure, the tractor traction device can be directly connected by snapping, without having to manually connect the snap ring and the pin, making it more convenient to use. In addition, the buffer device can reduce damage to the device caused by external forces.

[0008] Preferably, the one-way stop device includes a stop ring having a stretching cavity defined therein. A plurality of telescopic holes, communicating with the stretching cavity, are uniformly defined along the circumference of the inner ring surface of the stop ring. Each of the telescopic holes is provided with a corresponding inclined tongue, which is retractably mounted within the telescopic hole via the telescopic device. The one-way stop device allows workers to directly snap the drawbar into the drawbar block when installing the tractor head and bucket, eliminating the need for manual adjustment and making connection of the drawbar device more convenient.

[0009] Preferably, the telescopic device includes four T-shaped connecting plates, an arc-shaped stretching plate, a first fixing bolt, and several springs. Four through-holes communicating with the stretching cavity are evenly formed on the outer ring surface of the limit ring. One end of the vertical plate of the four connecting plates extends into the four through-holes and connects to the outer surfaces of the four stretching plates in a one-to-one correspondence. The several inclined tongues are evenly divided into four groups. The non-inclined end of each group of inclined tongues is connected to the several springs in a one-to-one correspondence, and the other end extends out of the telescopic hole. The other ends of the several springs are connected to the connecting plate. The four first fixing bolts are respectively passed through the limit ring and the vertical plate of the connecting plate to connect them. The telescopic device facilitates the disassembly of the traction device, thereby disassembling the tractor's head and bucket.

[0010] Preferably, the outer ends of the upper surfaces of the inclined tongues are each provided with a fixing groove, the retaining ring is provided with fixing holes corresponding one to the plurality of fixing grooves, and the fixing device comprises two semicircular fixing plates, each of which is provided with second fixing bolts corresponding to the plurality of fixing holes. The plurality of second fixing bolts are respectively and sequentially passed through the corresponding fixing holes and fixing grooves to connect the inclined tongue to the retaining ring. The fixing device makes the connection of the traction device more stable and the installation more secure during the traction process.

[0011] Preferably, the cross section of the oblique tongue is wedge-shaped, so that the traction rod can be inserted into the traction groove more smoothly and is not easy to fall off from the traction groove, so the setting of the traction device is more stable.

[0012] Preferably, the drawbar comprises a horizontally arranged Y-shaped drawbar, with a universal ball disposed at the vertical end of the drawbar. The universal ball is removably and fully engaged in the drawbar groove via a one-way stop. The universal ball provides a certain amount of movement in all directions during tractor travel, thereby improving the flexibility of the tractor connection.

[0013] Preferably, the diameter of the universal ball is larger than the distance between the opposing oblique tongues after extending out of the telescopic hole, so that the universal ball can be stably engaged in the traction block.

[0014] Preferably, the buffer device includes a buffer groove and a plurality of buffer springs. The buffer groove is installed in the traction groove. One end of each of the buffer springs is connected to the outer wall of the buffer groove, and the other end is connected to the inner wall of the traction groove. The universal ball is detachably and completely engaged in the buffer groove via a one-way limit device. The buffer device facilitates the use of the buffer springs to provide shock absorption when the traction rod is impacted or squeezed by external forces, thereby minimizing damage to the device caused by the impact.

[0015] Preferably, a horizontally arranged pull rod is connected to the front side of the traction block, so as to facilitate the connection of the traction block.

[0016] In summary, the present invention provides the following beneficial effects: after the towing block and towing rod are connected to the tractor's headstock and bucket, respectively, they can be directly engaged during installation, eliminating the need for multiple position adjustments, making operation more convenient. The provision of the buffer device mitigates impact or pulling forces on the device, reducing damage to the device and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 yes Figure 1 Middle top view;

[0019] Figure 3 yes Figure 1 Schematic diagram of the internal structure;

[0020] Figure 4 yes Figure 1 Right view of the middle traction block;

[0021] Figure 5 yes Figure 1 Middle section view along AA direction;

[0022] Figure 6 yes Figure 3 Enlarged view of part B.

[0023] In the figure, 1 is the traction block; 2 is the traction rod; 21 is the pulling frame; 22 is the universal ball; 3 is the one-way limiting device; 4 is the buffer device; 41 is the buffer groove; 42 is the buffer spring; 5 is the limiting ring; 6 is the telescopic hole; 7 is the inclined tongue; 8 is the telescopic device; 81 is the connecting plate; 82 is the stretching plate; 83 is the spring; 9 is the through hole; 10 is the second fixing bolt; 11 is the first fixing bolt; 12 is the traction groove; 13 is the stretching cavity; 14 is the fixing groove; 15 is the fixing hole; 16 is the fixing plate; 17 is the pulling rod. DETAILED DESCRIPTION

[0024] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0026] Refer to the attached Figure 1 、 3 A tractor traction device includes a drawbar 2 and a draw block 1. The rear side of the draw block 1 is provided with a forward-opening draw groove 12. A buffer device 4 is installed in the draw groove 12. A one-way limit device 3 is provided at the opening of the draw groove 12. The drawbar 2 is detachably engaged in the draw groove 12 via the one-way limit device 3. The drawbar 2 is connected to the one-way limit device 3 via a fixing device. The front end of the draw block 1 is mounted on the vehicle head, and the drawbar 2 is connected to the vehicle body. The engagement of the drawbar 2 with the draw block 1 connects the traction device, that is, the tractor head and the vehicle body, without the need for manual connection, making it more convenient to use.

[0027] Refer to the attached Figure 2 、 3 The drawbar 2 includes a horizontally arranged Y-shaped bracket 21. A universal ball 22 is mounted at the vertical end of the bracket 21. The universal ball 22 is removably secured within the drawbar 12 by a one-way stopper 3. A certain amount of space exists between the universal ball 22 and the drawbar 12, allowing it to move within the drawbar 12. This allows the tractor to move up and down, left and right within the drawbar 12 as it moves, accommodating rough terrain and providing greater flexibility. The bracket 21 is Y-shaped, with its bifurcated end connected to the vehicle body, providing improved load-bearing properties.

[0028] Refer to the attached Figure 5 The one-way limit device 3 includes a limit ring 5, which has a stretching cavity 13 formed therein. A plurality of telescopic holes 6 are uniformly formed on the inner surface of the limit ring 5 along its circumference, communicating with the stretching cavity 13. Each of the telescopic holes 6 is provided with a corresponding inclined tongue 7, and each of the inclined tongues 7 is telescopically mounted in the telescopic holes 6 via a telescopic device 8. Each of the telescopic holes 6 is in communication with the interior of the limit ring 7, and the inclined tongue 7 can be telescopically mounted in the limit ring 7 via the telescopic holes 6 and the telescopic device 8.

[0029] Refer to the attached Figure 3 、 56. The telescopic device 8 includes four T-shaped connecting plates 81, an arc-shaped stretching plate 82, a first fixing bolt 11, and a plurality of springs 83. Four through holes 9 communicating with the stretching cavity are evenly opened on the outer ring surface of the limit ring 5. One end of the vertical plate of the four connecting plates 81 extends into the four through holes 9 and is connected to the outer surfaces of the four stretching plates 82 in a one-to-one correspondence. The plurality of inclined tongues 7 are evenly divided into four groups. The non-inclined end of each group of inclined tongues 7 is connected to the plurality of springs 83 in a one-to-one correspondence, and the other end extends out of the telescopic hole 6. The other ends of the plurality of springs 83 are connected to the stretching plate 82. The four first fixing bolts 11 respectively pass through the limit ring 5 and the vertical plate of the connecting plate 81 to connect them. The plurality of springs 83 are evenly connected to the four stretching plates 82 according to the grouping of the inclined tongues 7. When the staff needs to connect the head of the tractor with the bucket, they move the head or the bucket, and the universal ball 22 squeezes the oblique tongue 7, so that the spring 83 is compressed, so that the universal ball 22 is squeezed into the traction block 1, and the head of the tractor and the bucket are connected; when the head of the tractor and the bucket need to be disassembled, the fixing bolts 11 and the fixing device are removed and the connecting plate 81 is pulled. The connecting plate 81 drives the stretching plate 82 and the oblique tongue 7 to move outward, and the universal ball 22 is able to disengage from the traction groove 12, completing the disassembly work.

[0030] Refer to the attached Figure 3 、 4 6. The outer end of the upper surface of the inclined tongue 7 is provided with a fixing groove 14. The limiting ring 5 is provided with fixing holes 15 corresponding to the fixing grooves 14 one by one. The fixing device includes two semicircular fixing plates 16. Second fixing bolts 10 corresponding to the fixing holes 15 are mounted on the fixing plates 16. The second fixing bolts 10 pass through the corresponding fixing holes 15 and fixing grooves 14 in sequence to connect the inclined tongue 7 to the limiting ring 5. The curvature of the fixing plate 16 matches the curvature of the limiting ring 5. The bolt heads of the second fixing bolts 10 are connected to the fixing plate 16, and the screws are inserted into the corresponding fixing grooves 14 and fixing holes 15. The fixing device is used to fix the inclined tongue 7, making it more stable during the tractor towing process.

[0031] Refer to the attached Figure 3 The cross-section of the oblique tongue 7 is wedge-shaped, with the side of the oblique tongue 7 not extending into the telescopic hole 6 extending downwardly as an inclined surface. This wedge-shaped design facilitates the compression of the oblique tongue 7 by the universal ball 22 as it moves from the outside into the traction block 1, and prevents disengagement after engagement. The universal ball 22 can be fully inserted into the traction block 1, and its diameter is larger than the distance between the oblique tongues 7 after extending out of the telescopic hole 6, ensuring a more stable engagement within the traction block 1.

[0032] Refer to the attached Figure 3The buffer device 4 includes a buffer groove 41 and a plurality of buffer springs 42. The buffer groove 41 is installed in the traction groove 12. One end of each of the buffer springs 42 is connected to the outer wall of the buffer groove 41, and the other end is connected to the inner wall of the traction groove 12. The universal ball 22 is detachably and completely engaged in the buffer groove 41 through the one-way limit device 3. The diameter of the buffer groove 41 is larger than that of the universal ball 22, and the universal ball 22 can extend into the buffer groove 41. When the traction rod 2 is impacted and squeezed by external forces, the buffer springs 42 can provide buffering and shock absorption, thereby minimizing damage caused by the impact on the device.

[0033] Refer to the attached Figure 2 , the front side of the traction block 1 is connected with a horizontally arranged pull rod 17. Pull rod 17 facilitates the traction block to be connected to the tractor head.

[0034] Refer to the attached Figure 1 、 2 3. When the utility model is in use, the traction block 1 and the traction rod 2 are first installed at the relative positions of the tractor head and the bucket, respectively, so that the traction block 1 and the traction rod 2 are at the same horizontal position. When the staff needs to connect the tractor head with the bucket, push the bucket or the head so that the universal head squeezes the oblique tongue 7, the spring 83 is compressed, and the traction rod 2 extends into the traction block 1, and the two are clamped. After the traction block 1 is connected to the traction rod 2, the fixing device is installed. The oblique tongue 7 is fixed. When the tractor head and the bucket need to be separated, the fixing device is removed, the fixing bolt 11 is removed, the stretching plate 82 is pulled, the oblique tongue 7 is retracted back to the telescopic hole 6, and the universal ball 22 is able to be disengaged from the traction block 1, and the tractor head and the bucket are separated.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A traction device for a tractor, comprising a traction rod (2) and a traction block (1), wherein the rear side of the traction block (1) is provided with a traction groove (12) opening forward, wherein: A buffer device (4) is installed in the traction groove (12), a one-way limit device (3) is provided at the opening of the traction groove (12), the traction rod (2) is detachably clamped in the traction groove (12) via the one-way limit device (3), and the traction rod (2) is connected to the one-way limit device (3) via a fixing device.

2. The tractor traction device according to claim 1, characterized in that: The one-way limiting device (3) comprises a limiting ring (5), a stretching cavity (13) is provided inside the limiting ring (5), a plurality of telescopic holes (6) in communication with the stretching cavity (13) are uniformly provided on the inner ring surface of the limiting ring (5) along its circumference, a plurality of the telescopic holes (6) are provided with corresponding oblique tongues (7), and the plurality of the oblique tongues (7) are telescopically installed in the telescopic holes (6) via a telescopic device (8).

3. The tractor traction device according to claim 2, characterized in that: The telescopic device (8) comprises four T-shaped connecting plates (81), an arc-shaped stretching plate (82), a first fixing bolt (11) and a plurality of springs (83). Four through holes (9) communicating with the stretching cavity are evenly opened on the outer ring surface of the limiting ring (5). One end of the vertical plates of the four connecting plates (81) respectively extends into the four through holes (9) and is connected to the outer surfaces of the four stretching plates (82) in a one-to-one correspondence. The plurality of inclined tongues (7) are evenly divided into four groups. The non-inclined end of each group of inclined tongues (7) is connected to the plurality of springs (83) in a one-to-one correspondence, and the other end extends out of the telescopic hole (6). The other ends of the plurality of springs (83) are all connected to the connecting plate (81). The four first fixing bolts (11) respectively pass through the limiting ring (5) and the vertical plates of the connecting plate (81) in sequence to connect them.

4. The tractor traction device according to claim 2, characterized in that: The outer end of the upper surface of the inclined tongue (7) is provided with a fixing groove (14), the limiting ring (5) is provided with fixing holes (15) corresponding to the plurality of fixing grooves (14) one by one up and down, the fixing device comprises two semicircular fixing plates (16), and the fixing plates (16) are provided with second fixing bolts (10) corresponding to the plurality of fixing holes (15), and the plurality of second fixing bolts (10) respectively pass through the corresponding fixing holes (15) and the fixing grooves (14) in sequence to connect the inclined tongue (7) with the limiting ring (5).

5. The tractor traction device according to claim 3, characterized in that: The cross section of the inclined tongue (7) is wedge-shaped.

6. The tractor traction device according to claim 1, characterized in that: The traction rod (2) comprises a horizontally arranged Y-shaped pull frame (21), a vertical end of the pull frame (21) being provided with a universal ball (22), and the universal ball (22) is detachably and completely clamped in the traction groove (12) via a one-way limiting device (3).

7. The tractor traction device according to claim 6, characterized in that: The diameter of the universal ball (22) is greater than the distance between the opposing oblique tongues (7) after extending out of the telescopic hole (6).

8. The tractor traction device according to claim 7, characterized in that: The buffer device (4) comprises a buffer groove (41) and a plurality of buffer springs (42); the buffer groove (41) is installed in the traction groove (12); one end of the plurality of buffer springs (42) is connected to the outer wall of the buffer groove (41) and the other end is connected to the inner wall of the traction groove (12); the universal ball (22) is detachably and completely clamped in the buffer groove (41) via a one-way limiting device (3).

9. The tractor traction device according to claim 5, characterized in that: A horizontally arranged pull rod (17) is connected to the front side of the traction block (1).

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