A traction device
By combining a slotted sheet metal structure with holes and a universal figure-eight swivel, the problems of bulky and easily lost parts in existing traction devices are solved, achieving lightweight, convenient movement and omnidirectional traction connection, thus improving ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANGFANG XIANGKUN AVIATION EQUIP CO LTD
- Filing Date
- 2025-09-03
- Publication Date
- 2026-06-16
AI Technical Summary
Existing traction devices are bulky, inconvenient to move, have easily lost individual components, and can only traction in one direction, making them inconvenient to use.
The design combines a slotted sheet metal structure with a central crossbar locking technology, along with a universal figure-eight swivel and an anti-loss chain, to enable quick insertion and omnidirectional traction connection of the boom arm, enhancing overall strength and reducing weight.
It improves the mobility and flexibility of the traction device, prevents component loss, broadens the applicability of traction directions, and simplifies the operation process.
Smart Images
Figure CN224360935U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of traction technology, and in particular to a traction device. Background Technology
[0002] The traction device is a core component in mechanical engineering that transmits traction or braking force. It can be connected to a trailer to meet the width requirements of the equipment to be towed and can perform traction. It is widely used in applications such as traction of unpowered equipment in airports. With the continuous development of technology, people's requirements for traction devices are also getting higher and higher.
[0003] The existing traction device has certain drawbacks in use. (1) The existing traction device is relatively bulky and cannot guarantee strength well, thus shortening its service life. (2) When the existing traction device needs to be moved to the next traction working environment, or when the traction is ended and the traction device is removed, it is inconvenient for people to move and use it independently. (3) Some independent parts of the existing traction device are easy to fall off and be lost. (4) The existing traction device only meets the traction connection of the traction ring in a single direction. When encountering the traction connection of the traction ring in other directions, it is necessary to use a transition device to switch. In addition, it is also more troublesome to disassemble and assemble during use, which is inconvenient and has certain adverse effects on the actual use process. Therefore, we propose a traction device. Utility Model Content
[0004] Technical Problem Solved: Addressing the shortcomings of existing technologies, this utility model provides a traction device. Utilizing a combination design of a slotted, perforated sheet metal structure and a central crossbar locking technology, this device significantly improves the overall strength of the extension arms and traction device while effectively reducing its own weight. It can be easily inserted and withdrawn with a simple rotation, facilitating better traction and proving simple and practical. This device allows for the folding of both extension arms, with the central crossbar engaging and securing the folded arms, enabling single-handed movement of the entire traction device. This greatly improves ease of movement. The application of an anti-loss chain in the traction device solves the problem of accidental loss of independent components during use or transport. The omnidirectional figure-eight swivel at the end of the extension arms allows for omnidirectional traction connection with the traction ring of the towed equipment, eliminating the need for a separate transition device and broadening the performance of the traction device, effectively solving the problems in the background technology.
[0005] Technical Solution: To achieve the above objectives, the technical solution adopted by this utility model is as follows: A traction device includes a first extendable arm and a second extendable arm. A limiting crossbar connects the first extendable arm and the second extendable arm. A first universal figure-eight swivel is connected to the end of the first extendable arm, and a second universal figure-eight swivel is connected to the end of the second extendable arm. A head connecting ring connects the ends of the first extendable arm and the second extendable arm. A third bolt is provided between the first extendable arm, the second extendable arm, and the head connecting ring. A second bolt is provided between the limiting crossbar and the first extendable arm. A pin is provided between the limiting crossbar and the second extendable arm, and the pin is connected to... There is a second anti-loss chain. A first bolt is provided between the first extender arm and the first universal figure-eight swivel. A fourth bolt is provided between the second extender arm and the second universal figure-eight swivel. A second swivel threaded pin is provided on the first universal figure-eight swivel. The second swivel threaded pin is connected to the first anti-loss chain. The first anti-loss chain is connected to the first extender arm. A first swivel threaded pin is provided on the second universal figure-eight swivel. The first swivel threaded pin is connected to the third anti-loss chain. The third anti-loss chain is connected to the second extender arm. Multiple sets of multi-angle insertion holes are distributed on the limiting crossbar. A welded sleeve is provided at the upper end of the first universal figure-eight swivel.
[0006] Preferably, the first universal figure-eight swivel is connected to the first extender arm by a first bolt, and the first extender arm and the limiting crossbar are connected by a second bolt.
[0007] Preferably, one end of the first anti-loss chain is welded to the first extension arm, and the other end is inserted into the threaded pin hole of the second swivel.
[0008] Preferably, one end of the second anti-loss chain is welded to the second extension arm, and the other end is inserted into the ring of the pin.
[0009] Preferably, one end of the third anti-loss chain is welded to the second extension arm, and the other end is inserted into the hole of the first swivel threaded pin.
[0010] Preferably, the second universal figure-eight swivel is connected to the second extender arm by a fourth bolt, and the second extender arm is inserted into the first extender arm and connected to the head connecting ring by a third bolt.
[0011] Beneficial effects: Compared with the prior art, this utility model provides a traction device with the following beneficial effects: This traction device uses a sheet metal structure, which ensures strength while reducing its own weight. It can be inserted and pulled out by simply rotating a certain angle, which is convenient and quick, and facilitates better traction. It is simple and practical. The first and second arms use sheet metal structures, which ensures strength while reducing its own weight. The upper and lower surfaces of the second arm have two sets of pin holes with different directions, which can realize self-locking after the pin is inserted. One set of holes is used in the use state, and the other set of holes is used in the retracted state.
[0012] The limiting crossbar also adopts a sheet metal structure, which is lightweight. A set of holes at different angles are drilled on the surface, so that the first and second arms can align with the holes on the limiting crossbar when they are opened at different angles. This allows the protrusion on the pin to be inserted and removed with just a certain rotation angle, which is convenient and quick. The pin is connected to the second arm through the second anti-loss chain, the second swivel threaded pin is connected to the first arm through the first anti-loss chain, and the first swivel threaded pin is connected to the second arm through the third anti-loss chain, which greatly reduces the possibility of losing the pin, the first swivel threaded pin, and the second swivel threaded pin.
[0013] The first and second universal figure-eight swivels are each welded with a sleeve. This ensures that the lower half of the second universal figure-eight swivel can still rotate 360°, while preventing the first and second universal figure-eight swivels from moving back and forth and colliding with the first and second booms. The entire traction device has a simple structure, is easy to operate, and performs better than traditional methods. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of a traction device according to the present invention.
[0015] Figure 2 This is a schematic diagram of the structure of a traction device in the open state according to the present invention.
[0016] Figure 3 This is a schematic diagram of the retracted state of a traction device according to the present invention.
[0017] Figure 4 This is a schematic diagram of the structure of the first extendable arm in a traction device according to the present invention.
[0018] Figure 5 This is a schematic diagram of the structure of the second extension arm in a traction device according to the present invention.
[0019] Figure 6 This is a schematic diagram of the limiting crossbar in a traction device according to the present invention.
[0020] Figure 7 This is a schematic diagram of the structure of the first universal figure-eight rotating ring in a traction device of this utility model.
[0021] Figure 8 This is a schematic diagram of the structure of the second anti-loss chain in a traction device of this utility model.
[0022] In the diagram: 1. First universal figure-eight swivel; 2. First anti-loss chain; 3. First bolt; 4. First extendable arm; 5. Second bolt; 6. Limiting crossbar; 7. Third bolt; 8. Head connecting ring; 9. Second anti-loss chain; 10. Pin; 11. Second extendable arm; 12. Third anti-loss chain; 13. Fourth bolt; 14. Second universal figure-eight swivel; 15. First swivel threaded pin; 16. Second swivel threaded pin; 17. Multi-angle insertion hole; 18. Welded sleeve. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] like Figure 1-8As shown, a traction device includes a first extendable arm 4 and a second extendable arm 11. A limiting crossbar 6 is connected between the first extendable arm 4 and the second extendable arm 11. A first universal figure-eight swivel 1 is connected to the end of the first extendable arm 4, and a second universal figure-eight swivel 14 is connected to the end of the second extendable arm 11. A head connecting ring 8 is connected to the ends of the first extendable arm 4 and the second extendable arm 11. A third bolt 7 is provided between the first extendable arm 4, the second extendable arm 11, and the head connecting ring 8. A second bolt 5 is provided between the limiting crossbar 6 and the first extendable arm 4. A pin 10 is provided between the limiting crossbar 6 and the second extendable arm 11. A second anti-loss chain 9 is connected to the pin 10. A first bolt 3 is provided between the first extendable arm 4 and the first universal figure-eight swivel 1, and a fourth bolt 13 is provided between the second extendable arm 11 and the second universal figure-eight swivel 14. A second swivel threaded pin is provided on the first universal figure-eight swivel 1. 16. The second swivel threaded pin 16 is connected to the first anti-loss chain 2, which is connected to the first extender arm 4. The second universal figure-eight swivel 14 is provided with the first swivel threaded pin 15, which is connected to the third anti-loss chain 12. The third anti-loss chain 12 is connected to the second extender arm 11. The limiting crossbar 6 is provided with multiple sets of multi-angle insertion holes 17. The upper end of the first universal figure-eight swivel 1 is provided with a welded sleeve 18. The combination design of metal components using a slotted perforated sheet metal structure and intermediate crossbar locking technology greatly improves the overall strength of the extender arm and traction device, while effectively reducing its own weight. It can be inserted and pulled out with only a certain angle of rotation, which is convenient and quick, and facilitates better traction. It is simple and practical. This device can realize the folding of the two extenders, and the intermediate crossbar is inserted and fixed with the folded extender arm, so that the entire traction device can be moved with one hand. It greatly improves the ease of movement; the application of the anti-loss chain in the traction device solves the problem of accidental loss of independent parts during use or transportation; the universal figure-eight swivel at the end of the boom can achieve omnidirectional traction connection with the traction ring of the towed equipment without the need for a separate transition device, thus expanding the performance of the traction device.
[0027] Furthermore, the first universal figure-eight swivel 1 is connected to the first extension arm 4 by the first bolt 3, and the first extension arm 4 and the limiting crossbar 6 are connected by the second bolt 5.
[0028] Furthermore, one end of the first anti-loss chain 2 is welded to the first extension arm 4, and the other end is inserted into the hole of the second swivel threaded pin 16.
[0029] Furthermore, one end of the second anti-loss chain 9 is welded to the second extension arm 11, and the other end is inserted into the ring of the pin 10.
[0030] Furthermore, one end of the third anti-loss chain 12 is welded to the second extension arm 11, and the other end is inserted into the hole of the first swivel threaded pin 15.
[0031] Furthermore, the second universal figure-eight swivel 14 is connected to the second extender arm 11 by the fourth bolt 13, and the second extender arm 11 is inserted into the first extender arm 4 and connected to the head connecting ring 8 by the third bolt 7.
[0032] Working Principle: This utility model includes a first universal figure-eight swivel 1, a first anti-loss chain 2, a first bolt 3, a first extendable arm 4, a second bolt 5, a limiting crossbar 6, a third bolt 7, a head connecting ring 8, a second anti-loss chain 9, a pin 10, a second extendable arm 11, a third anti-loss chain 12, a fourth bolt 13, a second universal figure-eight swivel 14, a first swivel threaded pin 15, a second swivel threaded pin 16, a multi-angle insertion hole 17, and a welded sleeve 18. The combination design of metal components using a slotted perforated sheet metal structure and a middle crossbar locking technology greatly improves the overall strength of the extendable arm and traction device, while effectively reducing its own weight. It only requires a certain angle of rotation to insert and withdraw, making it convenient, quick, and easy to use for better traction. This device can achieve the folding of the two extendable arms, with the middle crossbar inserted and fixed to the folded extendable arm, allowing the entire traction device to be moved with one hand. It greatly improves the ease of movement; the application of the anti-loss chain in the traction device solves the problem of accidental loss of independent parts during use or transportation; the universal figure-eight swivel at the end of the boom can achieve omnidirectional traction connection with the traction ring of the towed equipment without the need for a separate transition device, thus expanding the performance of the traction device.
[0033] The head connecting ring 8 is connected to the trailer. Adjust the angle between the first extender arm 4 and the second extender arm 11 to meet the width requirements of the equipment to be towed. Then, while inserting and rotating the pin 10, insert it into the holes on the limiting crossbar 6 and the second extender arm 11 to ensure overall structural stability and prevent twisting during towing. The second swivel threaded pin 16 and the first swivel threaded pin 15 are screwed out from the first universal figure-eight swivel 1 and the second universal figure-eight swivel 14, respectively, and then screwed into the first universal figure-eight swivel 1 and the second universal figure-eight swivel 14 after aligning with the rings on the equipment to be towed. After use, remove the device that has been moved to its designated position. Screw the second swivel pin 16 and the first swivel pin 15 into the first universal figure-eight swivel 1 and the second universal figure-eight swivel 14, respectively. While rotating, pull out the pin 10, retract the angle between the first extension arm 4 and the second extension arm 11, adjust the direction of the limiting crossbar 6, insert the pin 10 into the corresponding holes on the limiting crossbar 6 and the second extension arm 11, and fix the device in place. Store it in the designated area.
[0034] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A traction device, comprising a first extendable arm (4) and a second extendable arm (11), characterized in that: A limiting crossbar (6) is connected between the first extension arm (4) and the second extension arm (11). A first universal figure-eight swivel (1) is connected to the end of the first extension arm (4), and a second universal figure-eight swivel (14) is connected to the end of the second extension arm (11). A head connecting ring (8) is connected to the ends of the first extension arm (4) and the second extension arm (11). A third bolt (7) is provided between the first extension arm (4), the second extension arm (11), and the head connecting ring (8). A second bolt (5) is provided between the limiting crossbar (6) and the first extension arm (4). A pin (10) is provided between the limiting crossbar (6) and the second extension arm (11). A second anti-loss chain (9) is connected to the pin (10). The first extension arm (4) and the first universal figure-eight swivel (14) are connected to each other. A first bolt (3) is provided between the second extension arm (11) and the second universal figure-eight swivel (14), a fourth bolt (13) is provided between the second extension arm (11) and the second universal figure-eight swivel (14), a second swivel threaded pin (16) is provided on the first universal figure-eight swivel (1), the second swivel threaded pin (16) is connected to the first anti-loss chain (2), the first anti-loss chain (2) is connected to the first extension arm (4), the second universal figure-eight swivel (14) is provided with the first swivel threaded pin (15), the first swivel threaded pin (15) is connected to the third anti-loss chain (12), the third anti-loss chain (12) is connected to the second extension arm (11), a plurality of multi-angle insertion holes (17) are distributed on the limiting crossbar (6), and a welding sleeve (18) is provided at the upper end of the first universal figure-eight swivel (1).
2. The traction device according to claim 1, characterized in that: The first universal figure-eight swivel (1) is connected to the first extension arm (4) by the first bolt (3), and the first extension arm (4) and the limiting crossbar (6) are connected by the second bolt (5).
3. A traction device according to claim 1, characterized in that: One end of the first anti-loss chain (2) is welded to the first extension arm (4), and the other end is inserted into the hole of the second swivel threaded pin (16).
4. A traction device according to claim 1, characterized in that: One end of the second anti-loss chain (9) is welded to the second extension arm (11), and the other end is inserted into the ring of the pin (10).
5. A traction device according to claim 1, characterized in that: One end of the third anti-loss chain (12) is welded to the second extension arm (11), and the other end is inserted into the hole of the first swivel threaded pin (15).
6. A traction device according to claim 1, characterized in that: The second universal figure-eight swivel (14) is connected to the second extension arm (11) by the fourth bolt (13), and the second extension arm (11) is inserted into the first extension arm (4) and connected to the head connecting ring (8) by the third bolt (7).