A chain shackle capable of being quickly released while under load

Abstract

The present invention relates to the technical field of chain rigging, and discloses a chain shackle that can be quickly detached with load, comprising a shackle body one and a shackle body two which are movably installed through a connecting pin shaft, the shackle body one is connected to a binding end chain ring, the shackle body two is connected to a mooring end chain ring, the end of the shackle body one away from the connecting pin shaft is sleeved with a quick-release sliding sleeve and a reset spring, and the circumferential inner wall of the quick-release sliding sleeve is provided with a accommodating groove. By introducing the quick-release sliding sleeve and the reset spring structure, the chain shackle of the present invention can quickly realize the safe disengagement of the chain when the binding system is under load; meet the "ready-to-use" requirements in special vehicles or emergency transportation scenarios, and significantly improve the unlocking efficiency; the quick-release sliding sleeve is designed with the reset spring, so that the operator can complete the quick disengagement of the chain by simply pulling the rope by hand, and the operation is intuitive and fast; avoid the cumbersome process of traditional shackles that require multiple steps of manual unlocking in complex scenarios.

Description

Technical Field

[0001] The invention relates to the technical field of chain rigging, and in particular to a chain shackle capable of being quickly detached under load. Background Art

[0002] In the current field of transportation and rigging connection, common chain shackles include double ring buckles, D-type, bow-shaped, H-type, X-type, UU-type swivel rings, and C-shaped quick shackles. However, these shackles generally have the defect of being unable to quickly and safely disengage the chain under load. Existing chain shackles can only be connected, installed, and detached in a no-load state. If operated under load, it may cause the locking structure to fail or cause safety risks. In addition, these shackles are complicated to operate in actual use and are difficult to meet the needs of emergency scenarios, especially in special vehicle transportation tasks. When the vehicle arrives at the scene, it is necessary to quickly untie the binding chain for immediate use. The existing technology cannot provide an effective solution. Therefore, how to realize a shackle device that can quickly detach the chain under load is a technical problem that urgently needs to be solved in this field. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to provide a chain shackle that can be quickly disengaged with load.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A chain shackle that can be quickly detached under load comprises a shackle body one and a shackle body two which are movably installed via a connecting pin, the shackle body one being connected to a chain ring at a binding end, the shackle body two being connected to a chain ring at a mooring end, an end of the shackle body one away from the connecting pin being provided with a quick-release sleeve and a return spring, an accommodating groove being provided on a circumferential inner wall of the quick-release sleeve, a spring seat being provided on the side of the shackle body one, one end of the return spring being installed on the spring seat, and the return spring and the spring seat being both located in the accommodating groove.

[0006] Preferably, one end of the return spring away from the spring seat abuts against the inner wall of the accommodating groove.

[0007] Preferably, the outer diameter of one end of the second shackle body away from the connecting pin is matched with the inner diameter of the quick-release sliding sleeve.

[0008] Preferably, a stop boss is provided on the side surface of the second shackle body for limiting the sliding movement of the quick-release sliding sleeve.

[0009] Preferably, a fixed wing is installed on the outer wall of the quick-release sliding sleeve.

[0010] Preferably, a hand pull rope is provided on the fixed side wing.

[0011] The beneficial effects of the present invention are:

[0012] 1. Realize quick release under load: By introducing the quick release sleeve and the return spring structure, the chain shackle of the present invention can quickly realize the safe release of the chain when the lashing system is under load; meet the "ready-to-use" requirements in special vehicles or emergency transportation scenarios, and significantly improve the unlocking efficiency.

[0013] 2. Improve operational convenience: The quick-release sleeve is combined with the reset spring design, so that the operator can quickly remove the chain by simply pulling the rope by hand. The operation is intuitive and fast; avoiding the cumbersome process of traditional shackles that require multiple steps of manual unlocking in complex scenarios.

[0014] 3. Improve safety and reliability: Under load, the quick-release sleeve bears the radial load, and the locking system such as the stop boss ensures the stability of the bundle and avoids accidental falling off; even under high-intensity or dynamic load conditions, the shackle structure can still remain safe and reliable.

[0015] 4. Expanded application scenarios: The shackle is suitable for use in emergency transportation of special vehicles, and can also be widely used in the transportation and fixation of industrial equipment, the lifting of large machinery and other fields; in extreme environments (such as high temperature, high humidity or corrosive scenarios), the present invention ensures long-term stable operation by adopting durable materials and optimized design.

[0016] 5. Strong innovation: Different from the traditional shackle, the present invention innovatively solves the technical problem that the chain cannot be detached with load in the prior art through the combined design of the sliding sleeve and the spring, and provides a new technical solution for the relevant field. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a chain shackle capable of being quickly detached while under load, proposed in an embodiment of the present invention;

[0018] Figure 2 The present invention is a cross-sectional view of the structure of a quick-release sleeve and a spring seat in a chain shackle capable of quick release under load proposed in an embodiment of the present invention.

[0019] In the figure: 1-shackle body 1, 2-shackle body 2, 3-tethered end chain ring, 4-connecting pin, 5-stop boss, 6-quick release sliding sleeve, 7-fixed side wing, 8-hand pull rope, 9-reset spring, 10-spring seat, 11-binding end chain ring, 12-accommodating groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In one embodiment, referring to Figure 1 to Figure 2 A chain shackle that can be quickly disengaged with load, comprises a shackle body 1 and a shackle body 2 movably installed through a connecting pin 4, the shackle body 1 and the shackle body 2 can rotate relative to each other around the pin 4, the shackle body 1 is connected to a binding end chain ring 11, the shackle body 2 is connected to a mooring end chain ring 3, the end of the shackle body 1 away from the connecting pin 4 is sleeved with a quick-release sliding sleeve 6 and a reset spring 9, the quick-release sliding sleeve 6 is slidably installed on the shackle body 1 along the axial direction, the circumferential inner wall of the quick-release sliding sleeve 6 is provided with a receiving groove 12, the side of the shackle body 1 is provided with a spring seat 10, one end of the reset spring 9 is installed on the spring seat 10, and the reset spring 9 and the spring seat 10 are both located in the receiving groove 12.

[0022] As a preferred embodiment of the present invention, one end of the return spring 9 away from the spring seat 10 is against the inner wall of the receiving groove 12 to form an elastic pre-stressed structure. Specifically, one end of the return spring 9 is designed to be in close contact with the inner wall of the receiving groove 12, and a preset compression force is applied to the quick-release sliding sleeve 6 through the elastic force of the spring. This structure can ensure that when the shackle is in the initial state, the return spring 9 always maintains a certain elastic pre-stressed state, so that the quick-release sliding sleeve 6 can quickly return to the locked position under load or non-load conditions. The size of the pre-stress and the elastic coefficient of the return spring 9 can be adjusted according to the use requirements, so as to realize the safe release and quick release functions under different load conditions. The wall contact design ensures the stability of the spring and prevents the spring from being displaced or deformed during operation; the inner wall of the accommodating groove 12 may be optimized according to the structural shape and installation method of the quick-release sliding sleeve 6 to provide maximum support and stability; the elastic pre-stressing structure enables the reset spring 9 to quickly respond to the action of external forces such as the hand pull rope 8 during actual operation, thereby completing the quick release operation without being affected by the external environment or operation delays; through such a design, the reset spring 9 can play a key role in the working process of the chain shackle, which not only ensures the firmness and safety of the connection, but also enables the shackle to quickly and smoothly complete the unlocking action in an emergency, greatly improving the practicality and reliability of the shackle.

[0023] As a preferred embodiment of the present invention, the outer diameter of one end of the shackle body 2 away from the connecting pin 4 is adapted to the inner diameter of the quick-release sleeve 6, and the outer diameter of the shackle body 2 away from the connecting pin 4 is designed to be cylindrical or other regular geometric shapes, and its size is precisely calculated to match the inner diameter of the quick-release sleeve 6, and the adaptability between the two is achieved through strict tolerance control, which not only ensures that the quick-release sleeve 6 can slide smoothly along the axial direction of the shackle body 2, but also avoids shaking caused by excessive clearance or operation jamming caused by too small clearance; in addition, in order to further improve the adaptability performance, the inner wall of the quick-release sleeve 6 may be provided with a smooth surface treatment layer or a lubricating coating to reduce sliding friction and ensure stability under long-term use and high load conditions.

[0024] As a preferred embodiment of the present invention, the end of the shackle body 2 away from the connecting pin 4 can be designed with a guiding structure, such as a chamfer or an arc transition, to guide the quick-release sleeve 6 to accurately align and move smoothly when sliding; this adaptation relationship between the outer diameter and the inner diameter not only improves the operating efficiency of the shackle, but also ensures the functional stability of the system under loaded or unloaded conditions.

[0025] As a preferred embodiment of the present invention, the matching structure of the shackle body 2 and the quick release sleeve 6 can be optimized according to the application scenario, such as selecting corrosion-resistant materials in an environment that requires corrosion resistance, or strengthening the mechanical properties of the contact parts of the two under high-intensity loads; through the above design, the matching performance of the shackle body 2 and the quick release sleeve 6 is significantly improved, showing higher flexibility and reliability in the quick release operation. At the same time, the adaptation structure can also effectively extend the service life of the components, reduce the risk of performance degradation caused by friction or wear, and further enhance the safety and durability of the shackle device in practical applications.

[0026] As a preferred embodiment of the present invention, a stop boss 5 is provided on the side of the shackle body 2, which is used to limit the sliding of the quick-release sleeve 6, ensuring that the quick-release sleeve 6 can withstand radial loads when it is in the initial installation position. The existence of the stop boss 5 not only ensures that the quick-release sleeve 6 can always be in the initial installation position, but also prevents the quick-release sleeve 6 from accidentally slipping due to external vibration or other factors through its limiting function. This structural design can greatly improve the operational reliability of the shackle in actual use, and provide stable support for the quick-release sleeve 6, ensuring that the shackle device maintains normal function under load. Through this design, the present invention realizes effective limiting of the quick-release sleeve 6, provides higher safety, stability and service life under the load state of the chain shackle, and greatly simplifies the operation and maintenance process of the shackle, providing a key structural guarantee for quick release with load.

[0027] As a preferred embodiment of the present invention, the size and shape of the stop boss 5 match the structure of the quick release sleeve 6. Common designs include a raised ring, a wedge-shaped stopper or an integrally formed structure to provide a reliable limit function. When the quick release sleeve 6 is connected to the shackle body 2, the stop boss 5 can effectively disperse the force from the radial load, and enhance its bearing capacity through the optimized design of the contact area, thereby ensuring the safety and stability of the shackle in a high-intensity use environment.

[0028] As a preferred embodiment of the present invention, under high load or dynamic load conditions, the stop boss 5 can be made of high-strength metal or composite material to improve wear resistance and impact resistance.

[0029] As a preferred embodiment of the present invention, in a scenario where high flexibility is required, a buffer layer or an anti-slip coating may be added between the stop boss 5 and the quick-release sleeve 6 to reduce sliding friction and mechanical wear.

[0030] As a preferred embodiment of the present invention, a fixed wing 7 is installed on the outer wall of the quick-release sliding sleeve 6 .

[0031] As a preferred embodiment of the present invention, the fixed wing 7 is fixed to the quick-release sliding sleeve 6 by welding, integral molding or bolt connection to ensure its reliability under high load conditions.

[0032] As a preferred embodiment of the present invention, a hand pull rope 8 is provided on the fixed wing 7 .

[0033] As a preferred embodiment of the present invention, the surface of the fixed wing 7 may be treated with an anti-slip texture or coating to increase the stability of the hand rope 8 during installation and avoid accidental loosening due to sliding or vibration.

[0034] As a preferred embodiment of the present invention, the hand pull rope 8 can be made of high-strength materials such as nylon rope, steel wire rope, etc. according to actual use requirements to ensure its wear resistance and reliability in long-term use. At the same time, in order to improve the convenience of operation of the hand pull rope 8, a handle, a pull ring or other structures that are easy to grasp can be set at its end.

[0035] The working principle of the present invention is as follows: the shackle body 1 is connected to the binding end chain ring 11, the shackle body 2 is connected to the mooring end chain ring 3, and the two parts are movably connected through the connecting pin shaft 4, allowing the shackle body 1 and the shackle body 2 to rotate around the pin shaft 4; during the initial installation, the quick release sliding sleeve 6 is pushed to the position of contacting the stop boss 5 on the shackle body 2 by the elastic force of the reset spring 9. At this time, the quick release sliding sleeve 6 locks the shackle body 1 and the shackle body 2 in a connected state and bears the radial load; during the vehicle transportation process, the shackle fixes the vehicle on the transportation platform through the chain system. Since the quick release sliding sleeve 6 is in a locked state and bears the radial load with the support of the reset spring 9, The entire tying system has high strength and reliability, ensuring safe transportation of vehicles; when the vehicle needs to be released quickly, external force is applied through the hand rope 8 to pull the quick-release sleeve 6. At this time, the reset spring 9 is compressed under the action of the external force, and the quick-release sleeve 6 slides in the direction of the shackle body 1 until it is completely separated from the shackle body 2. After the quick-release sleeve 6 is separated, the shackle body 2 is no longer restricted, and rotates around the connecting pin 4 under the action of the tension of the tying system, gradually releasing the vehicle's mooring end chain ring 3, ensuring that the tying system can be quickly detached even when the vehicle is still carrying a load. After separation, the quick-release sleeve 6 and the reset spring 9 can return to the initial state, which is convenient for reinstallation and use.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chain shackle capable of being quickly released under load, characterized in that: The invention comprises a shackle body (1) and a shackle body (2) which are movably mounted via a connecting pin shaft (4); the shackle body (1) is connected to a binding end chain ring (11); the shackle body (2) is connected to a mooring end chain ring (3); a quick-release sliding sleeve (6) and a return spring (9) are sleeved on one end of the shackle body (1) away from the connecting pin shaft (4); an accommodating groove (12) is provided on the inner wall of the quick-release sliding sleeve (6); a spring seat (10) is provided on the side surface of the shackle body (1); one end of the return spring (9) is mounted on the spring seat (10); and the return spring (9) and the spring seat (10) are both located in the accommodating groove (12).

2. A chain shackle capable of quick release under load according to claim 1, characterized in that: One end of the return spring (9) away from the spring seat (10) abuts against the inner wall of the accommodating groove (12).

3. A chain shackle capable of quick release under load according to claim 1, characterized in that: The outer diameter of one end of the second shackle body (2) away from the connecting pin (4) is adapted to the inner diameter of the quick-release sliding sleeve (6).

4. A chain shackle capable of quick release under load according to claim 1, characterized in that: A stop boss (5) is provided on the side surface of the second shackle body (2) for limiting the sliding movement of the quick-release sliding sleeve (6).

5. The chain shackle capable of quick release under load according to claim 1, characterized in that: The outer wall of the quick-release sliding sleeve (6) is provided with a fixed side wing (7).

6. A chain shackle capable of quick release under load according to claim 5, characterized in that: A hand pull rope (8) is provided on the fixed side wing (7).

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