A highly non-adjustable manual traction device

Abstract

The utility model discloses a height non -adjustable manual traction device, including traction base, traction ring, connecting plate, bolt, nut and self -lock bolt, self -lock bolt contains traction pin, fixed part, first rotation axis, rotating ring, clamping groove, handle, second rotation axis, spacing piece and buckle, and the connecting plate of traction base is fixed with tractor through bolt, nut and antiskid pad, and the bolt is inserted into the bolt hole of traction ring, and spacing plate limits, and rotating ring is connected with clamping groove and is realized self -lock through buckle. Through above -mentioned structure, realized firm connection with tractor, has the manual self -locking function of simple operation, can prevent the bolt from falling off in the traction, is applicable to the scene such as agriculture, small -size engineering, satisfies low -cost, high reliability traction demand.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a height-non-adjustable manual traction device. Background Technology

[0002] In agriculture, small-scale engineering, and other fields, tractors often need to use traction devices to drive agricultural implements and small equipment. Existing traction devices have many problems. Some devices are height-adjustable but have complex structures and many parts, resulting in a high failure rate. Moreover, the adjustment mechanism is prone to loosening due to vibration, affecting traction stability. Manually operated simple traction devices generally lack a reliable self-locking structure, and the pin is prone to falling off during bumps, posing a safety hazard.

[0003] In addition, most general-purpose traction devices have poor compatibility with tractor connecting plates. The connection parts are fixed with a single bolt or asymmetrically, which can easily lead to component deformation due to uneven stress and large loss of traction force transmission. At the same time, the complex structure increases manufacturing costs and makes maintenance inconvenient, making it difficult to meet the requirements of low cost and high reliability in small-scale operation scenarios. Therefore, a manual traction device with a simple structure, stable connection and safe operation is needed. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a manual traction device with a non-adjustable height. The connection is stable, and the four corner bolts and anti-slip pads ensure reliable transmission of traction force. It is easy to operate, and the locking and unlocking of the pin can be completed manually. It is efficient, safe and reliable, and the self-locking structure prevents the pin from falling off, avoiding accidents. It has strong applicability, and the non-adjustable height design makes the structure simple and the cost low, which is suitable for traction scenarios where the height does not need to be adjusted.

[0005] This utility model also provides a manual traction device with a height that is not adjustable as described above, a traction base, a connecting plate provided at the rear end of the traction base, the traction base and the connecting plate being fixedly connected by bolts and nuts, a traction ring being fixedly connected at the front end of the traction base, and a pin hole provided at both the upper and lower ends of the traction ring, with a self-locking pin inserted into the pin hole.

[0006] The self-locking pin includes:

[0007] A traction pin, the lower end of which is inserted into a pin hole;

[0008] A fastener located at the upper end of the traction pin;

[0009] The first rotating shaft has a groove on its top, and the inner wall of the groove is fixedly connected to the first rotating shaft.

[0010] A rotating ring, the inner wall of which is rotatably connected to a first rotating shaft;

[0011] A slot is located on the outer surface of the rotating ring.

[0012] According to the aforementioned non-adjustable height manual traction device, an anti-slip pad is provided between the traction base and the connecting plate, with the front end of the anti-slip pad tightly fitted to the traction base and the rear end of the anti-slip pad tightly fitted to the connecting plate.

[0013] By adopting the above technical solution, the friction between the two is increased, preventing relative slippage caused by vibration and other factors during traction, further enhancing the stability of the connection, and ensuring that the transmission of traction force is not affected.

[0014] According to the aforementioned height-unadjustable manual traction device, the number of bolts is four and they are evenly distributed at the four corner points near the connecting plate, and the number of nuts is four and they correspond one-to-one with the bolts.

[0015] By adopting the above technical solution, the connection between the traction base and the connecting plate is ensured, so that the two form a stable overall structure.

[0016] According to the aforementioned non-adjustable height manual traction device, a limiting plate is fixedly connected between the traction pin and the fixing member, and the bottom of the limiting plate is tightly fitted with the top of the pin hole.

[0017] By adopting the above technical solution, the depth of the traction pin inserted into the pin hole is limited, ensuring that the insertion position is consistent each time, ensuring the stability of the fit between the traction pin and the pin hole, and avoiding the impact of traction effect due to insertion that is too deep or too shallow.

[0018] According to the aforementioned non-adjustable height manual traction device, a handle is fixedly connected to the outer surface of the rotating ring.

[0019] By adopting the above technical solution, operators are provided with a convenient gripping point, making it easy to manually rotate the rotating ring to lock and unlock the self-locking pin, thus improving the ease of operation.

[0020] According to the aforementioned non-adjustable height manual traction device, a second rotating shaft is fixedly connected to the inner wall of the groove near the upper left corner. A limiting member is rotatably connected to the outer surface of the second rotating shaft. A buckle is fixedly connected to the bottom of the limiting member, and the outer surface of the buckle engages with the groove.

[0021] By adopting the above technical solution and using the self-locking function of the self-locking pin, when the buckle is engaged in the slot, the position of the rotating ring can be fixed, thereby locking the traction pin, preventing the pin from falling off during traction, and ensuring the safety of traction operations.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0024] Figure 1 This is an overall structural diagram of a height-non-adjustable manual traction device according to the present invention;

[0025] Figure 2 This is an internal structural diagram of a height-non-adjustable manual traction device according to the present invention;

[0026] Figure 3 This is a diagram showing the installation position of the self-locking traction pin of a non-adjustable height manual traction device according to this utility model.

[0027] Figure 4 This is a structural diagram of the self-locking traction pin of a height-non-adjustable manual traction device according to this utility model.

[0028] Legend:

[0029] 1. Traction base; 2. Traction ring; 3. Connecting plate; 4. Bolt; 5. Nut; 6. Traction pin; 7. Pin hole; 8. Limiting plate; 9. Fixing component; 10. Groove; 11. First rotating shaft; 12. Rotating ring; 13. Handle; 14. Slot; 15. Buckle; 16. Limiting component; 17. Second rotating shaft; 18. Anti-slip pad. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] Reference Figure 1-4 This utility model embodiment provides a height-unadjustable manual traction device, which includes a traction base 1, a connecting plate 3 at the rear end of the traction base 1, and a fixed connection between the traction base 1 and the connecting plate 3 by bolts 4 and nuts 5. A traction ring 2 is fixedly connected to the front end of the traction base 1, and a pin hole 7 is provided at both the upper and lower ends of the traction ring 2. A self-locking pin is inserted into the pin hole 7.

[0032] An anti-slip pad 18 is provided between the traction base 1 and the connecting plate 3. The front end of the anti-slip pad 18 is in close contact with the traction base 1, and the rear end of the anti-slip pad 18 is in close contact with the connecting plate 3. There are four bolts 4, which are evenly distributed at the four corners near the connecting plate 3. There are four nuts 5, which correspond one-to-one with the bolts 4.

[0033] Self-locking pins include:

[0034] The lower end of the traction pin 6 is inserted into the pin hole 7.

[0035] Fixing element 9 is located at the upper end of the traction pin 6.

[0036] The top of the first rotating shaft 11 and the fixing member 9 is provided with a groove 10, and the inner wall of the groove 10 is fixedly connected to the first rotating shaft 11.

[0037] Rotating ring 12, the inner wall of rotating ring 12 is rotatably connected to the first rotating shaft 11.

[0038] The slot 14 is located on the outer surface of the rotating ring 12.

[0039] A limiting plate 8 is fixedly connected between the traction pin 6 and the fixing member 9. The bottom of the limiting plate 8 is tightly fitted with the top of the pin hole 7. A handle 13 is fixedly connected to the outer surface of the rotating ring 12. A second rotating shaft 17 is fixedly connected to the inner wall of the groove 10 near the upper left corner. A limiting member 16 is rotatably connected to the outer surface of the second rotating shaft 17. A buckle 15 is fixedly connected to the bottom of the limiting member 16. The outer surface of the buckle 15 engages with the slot 14.

[0040] Working principle: First, prepare to connect the device to the tractor. Connect the connecting plate 3 on the tractor to the traction base 1. Insert four bolts 4, which are evenly distributed at the four corners of the connecting plate 3, through the connecting plate 3 and the traction base 1. Then tighten the nuts 5 to fix it. At this time, the anti-slip pads 18 between the traction base 1 and the connecting plate 3 are tightly attached to both, increasing the friction and preventing the connection from loosening. The installation and fixing of the main structure to the tractor is completed.

[0041] Next, the traction connection operation is performed. The lower end of the traction pin 6 is inserted into the pin hole 7 of the traction ring 2 until the bottom of the limiting plate 8 is tightly fitted with the top of the pin hole 7, thus achieving the initial positioning of the traction pin 6. Then, the self-locking is performed. Hold the handle 13 on the outer surface of the rotating ring 12 and drive the rotating ring 12 to rotate around the first rotating shaft 11 in the top groove 10 of the fixing member 9, so that the slot 14 on the outer surface of the rotating ring 12 is adjusted to a suitable position. Then, rotate the groove 10 close to the limiting member 16 connected to the inner wall of the upper left corner through the second rotating shaft 17, so that the buckle 15 at the bottom of the limiting member 16 is engaged in the slot 14, thus completing the self-locking.

[0042] At this point, the towing pin 6 is securely locked in the pin hole 7, ensuring that it will not fall off during the towing process. Then, the towing operation can be carried out. The traction force is transmitted from the towing ring 2 to the towing base 1, bolt 4, and connecting plate 3 on the tractor in sequence, eventually driving the towed equipment to move with the tractor. After the towing operation is completed, the towing pin is unlocked and separated. First, rotate the limiting part 16 to make the buckle 15 disengage from the slot 14, releasing the restriction on the rotating ring 12. Then, rotate the rotating ring 12 to the initial position through the handle 13. Finally, pull the handle 13 upward to pull the towing pin 6 out of the pin hole 7, completing the entire towing process.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A height-non-adjustable manual traction device, characterized in that, include: A traction base (1) is provided with a connecting plate (3) at its rear end. The traction base (1) and the connecting plate (3) are fixedly connected by bolts (4) and nuts (5). A traction ring (2) is fixedly connected to the front end of the traction base (1). The upper and lower ends of the traction ring (2) are provided with pin holes (7). A self-locking pin is inserted into the pin hole (7). The self-locking pin includes: The lower end of the traction pin (6) is inserted into the pin hole (7); The fastener (9) is located at the upper end of the traction pin (6); The first rotating shaft (11) has a groove (10) on the top of the fixing member (9), and the inner wall of the groove (10) is fixedly connected to the first rotating shaft (11). A rotating ring (12), the inner wall of which is rotatably connected to the first rotating shaft (11); The slot (14) is located on the outer surface of the rotating ring (12).

2. The height-non-adjustable manual traction device according to claim 1, characterized in that, An anti-slip pad (18) is provided between the traction base (1) and the connecting plate (3). The front end of the anti-slip pad (18) is in close contact with the traction base (1), and the rear end of the anti-slip pad (18) is in close contact with the connecting plate (3).

3. A non-adjustable height manual traction device according to claim 1, characterized in that, The number of bolts (4) is four and they are evenly distributed at the four corners near the connecting plate (3). The number of nuts (5) is four and they correspond one-to-one with the bolts (4).

4. A non-adjustable height manual traction device according to claim 1, characterized in that, A limiting plate (8) is fixedly connected between the traction pin (6) and the fixing member (9), and the bottom of the limiting plate (8) is tightly fitted with the top of the pin hole (7).

5. A non-adjustable height manual traction device according to claim 1, characterized in that, A handle (13) is fixedly connected to the outer surface of the rotating ring (12).

6. A non-adjustable height manual traction device according to claim 1, characterized in that, The inner wall of the groove (10) near the upper left corner is fixedly connected to a second rotating shaft (17). The outer surface of the second rotating shaft (17) is rotatably connected to a limiting member (16). The bottom of the limiting member (16) is fixedly connected to a buckle (15). The outer surface of the buckle (15) engages with the slot (14).

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