Hand-pulled automatic detacher

Abstract

The utility model relates to the technical field of detachers, and discloses a hand-pulled automatic detacher which comprises a detacher body, and the detacher body comprises a main hook body, an auxiliary hook body, a linkage block, a shackle, a pin hole and a safety pin. The detacher body further comprises an auxiliary pin disengaging mechanism, and the auxiliary pin disengaging mechanism comprises a mounting sleeve. According to the safety pin locking device, the auxiliary pin disengaging mechanism is arranged, the installation sleeve is arranged outside the pin hole, the spring and the push plate are installed in the installation sleeve, and the iron clamping rod penetrates through the through hole in the safety pin and is attracted by the iron attraction base on the outer wall face of the shackle, so that locking of the safety pin is achieved; the safety pin can be unlocked only by pulling the pull rope connected to the connecting buckle at the bottom end of the iron clamping rod, the safety pin is withdrawn from the pin hole by means of the elastic potential energy of the spring, and by means of the design, the problem that the safety pin of an existing hand-pulling detacher is difficult to pull away in the high-altitude operation scene is solved. And the use convenience and safety of the detacher are improved.

Description

Technical Field

[0001] This utility model relates to the field of unhooking device technology, and more specifically to a manual automatic unhooking device. Background Technology

[0002] In various engineering operations involving the connection and separation of objects, hand-operated release hooks are a commonly used tool, widely applied in fields such as automobile drop tests, aerospace material handling, marine equipment deployment, lifting heavy objects, bridge pier construction, and building construction. To ensure safety during use, traditional hand-operated release hooks are mostly equipped with a safety pin. This safety pin is typically inserted laterally and securely set in the locking hole of the release hook. Its design purpose is to prevent the hook from accidentally disengaging under normal use, thereby ensuring the reliability of the connection.

[0003] However, the drawbacks of this design become apparent in certain specialized experimental scenarios, such as high-altitude car drop tests. High-altitude car tests are a crucial part of vehicle safety performance evaluation, designed to simulate the vehicle's safety under extreme conditions. In such tests, the safety pin must first be removed, and then the shackle must be pulled to open the release hook and allow the car to drop from a height.

[0004] However, in practice, because the safety pin is inserted horizontally into the lock hole and the release device is usually installed at a high position above the ground, it poses a great difficulty for workers to pull the safety pin out by pulling the rope. The reason is that when workers are standing on the ground and the release device is positioned high, the rope is prone to deflection during the transmission of pulling force, making it difficult to keep the direction of the force parallel to the direction in which the safety pin is pulled out.

[0005] Therefore, in actual car drop experiments and similar high-altitude work scenarios, existing hand-operated release devices often suffer from difficulties in removing the safety pin, forcing workers to choose not to insert it. While this solves the problem of the safety pin's difficulty in removal, it creates a serious safety hazard during use. In the event of an accident during the experiment, the release device may disengage prematurely, threatening the safety of the experimental equipment and personnel.

[0006] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a manual automatic unhooking device to solve the problem that the safety pin of the existing manual unhooking device is difficult to remove in high-altitude operation scenarios, thereby improving the safety and convenience of using the unhooking device. Utility Model Content

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a manual automatic unhooking device to solve the problems existing in the background art.

[0008] This utility model provides the following technical solution: a hand-operated automatic unhooking device, comprising a unhooking device body, wherein the unhooking device body includes a main hook body, an auxiliary hook body, a linkage block, a shackle, a pin hole and a safety pin;

[0009] The main body of the unhooking device also includes an auxiliary pin-removing mechanism, which includes:

[0010] An mounting sleeve is disposed outside the pin hole, and the safety pin can be inserted into the interior of the mounting sleeve through the pin hole;

[0011] A spring is installed inside the mounting sleeve;

[0012] A push plate is connected to one side of the spring;

[0013] An insertion hole is provided at the bottom and top of the mounting sleeve and is connected to the interior of the mounting sleeve;

[0014] The iron clip is inserted into the insertion hole at the bottom of the mounting sleeve and extends through the through hole on the safety pin to the insertion hole at the top of the mounting sleeve, and is finally firmly attracted by the magnetic base fixed to the outer wall of the shackle.

[0015] A connecting buckle is located at the bottom of the iron locking rod. When it is necessary to release the pin, the pull rope is connected to the connecting buckle, and the iron locking rod is pulled down to release the lock on the safety pin. At this time, the safety pin is removed from the pin hole by relying on the elastic potential energy of the spring.

[0016] Furthermore, the main hook body, auxiliary hook body, linkage block, and shackle are connected by a pin; the main hook body has a first arc-shaped portion, and the auxiliary hook body has a lifting hole and a second arc-shaped portion; when the main hook body and auxiliary hook body are locked, the first arc-shaped portion and the second arc-shaped portion form a circular release hole, which can be opened by pulling the shackle upward; the shackle has a connecting hole for connecting a release rope for release operation.

[0017] Furthermore, the pin hole includes a first round hole, a second round hole, and a third round hole. The first round hole is provided on one side of the shackle, and the third round hole is provided on the other side. The second round hole is provided on the main hook body, and the first round hole, the second round hole, and the third round hole are located on the same axis, so that the safety pin can pass through the first round hole, the second round hole, and finally through the third round hole in sequence, extending from one side of the shackle to the other side.

[0018] Furthermore, a connecting button is installed on the main hook body, and a connecting rope is connected to the connecting button. The other end of the connecting rope is connected to the safety pin, which is used to connect the safety pin to the body of the release device after the safety pin is released, so as to prevent the safety pin from being lost.

[0019] Furthermore, a guide groove is provided at the top of the main hook body. The guide groove is used to guide the release rope connected to the connection hole, which can regulate the movement trajectory of the release rope and avoid tangling or deviation of the release rope during the pulling process, thus ensuring the stability and reliability of the unhooking operation.

[0020] Furthermore, at least two limiting cylinders are installed inside the wire groove to prevent the release rope inside the wire groove from detaching from the wire groove, thereby further improving the stability and reliability of the unhooking operation.

[0021] Furthermore, the main hook body has an arc-shaped protrusion, and the auxiliary hook body has an arc-shaped recess. The arc-shaped protrusion and the arc-shaped recess are adapted to engage. This engagement structure can enhance the stability of the main hook body and the auxiliary hook body in the locked state, effectively prevent relative displacement between the two during the tensile process, and ensure the reliability of the connection of the unhooking device during operation.

[0022] Furthermore, the meshing surfaces of the main hook body and the auxiliary hook body, namely the arc-shaped protrusion and the arc-shaped recess, have a wear-resistant coating. This wear-resistant coating can improve the wear resistance of the meshing surfaces and extend the service life of the hook releaser. The wear-resistant coating can be a ceramic coating or a hard alloy coating.

[0023] The technical effects and advantages of this utility model are as follows:

[0024] I. This utility model features an auxiliary pin release mechanism. An installation sleeve is placed outside the pin hole, and a spring and push plate are installed inside the sleeve. An iron clamp passes through the through hole in the safety pin and is attracted by a magnetic base on the outer wall of the shackle, thus locking the safety pin. When the pin needs to be released, simply pull the rope connected to the buckle at the bottom of the iron clamp to release the lock. The spring's elastic potential energy then pulls the safety pin out of the pin hole. This design solves the problem of difficulty in removing the safety pin in high-altitude operations with existing hand-operated release devices, improving the convenience and safety of the release device.

[0025] II. This utility model improves the wear resistance of the meshing surfaces of the main hook and auxiliary hook by applying a wear-resistant coating, such as a ceramic coating or a hard alloy coating, thereby extending the service life of the release device. Simultaneously, the meshing structure, where the arc-shaped protrusion on the main hook and the arc-shaped recess on the auxiliary hook match, enhances the stability of the main and auxiliary hooks in the locked state, effectively preventing relative displacement during tensile stress and ensuring reliable connection during operation. Furthermore, the wire groove on the main hook and the internal limiting cylinder regulate the movement trajectory of the release rope, preventing entanglement or deviation during pulling, further improving the stability and reliability of the release operation. The connecting button and connecting rope allow the safety pin to be attached to the main body of the release device after it is disengaged, preventing the safety pin from being lost. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention.

[0027] Figure 2 This is a three-dimensional cross-sectional view of the structure of this utility model.

[0028] Figure 3 For the present utility model Figure 2 A three-dimensional schematic diagram of the structure from another perspective.

[0029] Figure 4 For the present utility model Figure 1 A three-dimensional schematic diagram of the structure from another perspective.

[0030] Figure 5 This is a three-dimensional disassembled schematic diagram of a partial structure of this utility model.

[0031] Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention.

[0032] Figure 7 This is another three-dimensional structural schematic diagram of the present invention.

[0033] Figure 8 This is a three-dimensional disassembled schematic diagram of the auxiliary pin-removing mechanism of this utility model.

[0034] Figure 9 This is a partially enlarged schematic diagram of the structure at point A in the figure of this utility model.

[0035] Figure 10 This is a three-dimensional schematic diagram of the wire groove structure of this utility model.

[0036] In the diagram: 100, main body of the unhooking device; 110, main hook body; 111, auxiliary hook body; 112, linkage block; 113, shackle; 114, lifting hole; 115, first arc-shaped part; 116, second arc-shaped part; 117, connecting hole; 118, first round hole; 119, second round hole; 120, third round hole; 121, safety pin; 122, mounting sleeve; 123, spring; 124, push plate; 125, insertion hole; 126, iron clamp; 127, magnet seat; 128, connecting buckle; 129, connecting button; 130, connecting rope; 131, wire groove; 132, limiting cylinder; 133, arc-shaped protrusion; 134, arc-shaped recess. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0039] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0041] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0042] Example 1: This utility model provides a manual automatic unhooking device, including a unhooking device body 100. The unhooking device body 100 is the core part of the entire unhooking device, providing basic support for the connection and unhooking operation of the entire device. The unhooking device body 100 mainly includes a main hook body 110, an auxiliary hook body 111, a linkage block 112, a shackle 113, a pin hole, and a safety pin 121.

[0043] The main body 100 of the release device also includes an auxiliary release mechanism, which is a key component designed to overcome the inconvenience of traditional release devices in special scenarios. Specifically, a mounting sleeve 122 is fixedly connected to the outer wall of the shackle 113 outside the pin hole. The mounting sleeve 122 is cylindrical or other shapes adapted to the safety pin 121, ensuring that the safety pin 121 can be smoothly inserted into the interior of the mounting sleeve 122 through the pin hole. Inside the mounting sleeve 122, a high-strength spring 123 is installed. This spring 123 is made of high-quality elastic material, possesses good elastic properties, can withstand certain tensile and compressive forces, and has a long service life to ensure the stability of its elastic potential energy during repeated use. A push plate 124 is connected to one side of the spring 123, and the push plate 124 can move stably with the spring 123 as it extends or retracts.

[0044] Meanwhile, insertion holes 125 are provided at the bottom and top of the mounting sleeve 122. The insertion holes 125 are circular through holes or other shapes adapted to the iron clamp rod 126, allowing the iron clamp rod 126 to be inserted and communicating with the interior of the mounting sleeve 122 to ensure the continuity of the internal space. The iron clamp rod 126 is inserted into the insertion hole 125 at the bottom of the mounting sleeve 122. Its length is carefully determined according to the overall dimensions of the release device, ensuring that it can extend through the through hole on the safety pin 121 to the insertion hole 125 at the top of the mounting sleeve 122, and is finally firmly attracted by the magnetic base 127 fixed to the outer wall of the shackle 113. The magnetic strength of the magnetic base 127 has been tested and is sufficient to firmly attract the iron clamp rod 126 under normal use, preventing it from accidentally... The safety pin 121 is loosened externally. At the bottom of the iron clamp 126, a connecting buckle 128 is also provided. The connecting buckle 128 is made of high-quality metal material, and its structure is ring-shaped with a smooth surface, which facilitates the connection of the pull rope. When it is necessary to release the pin, the pull rope is connected to the connecting buckle 128. When the operator is operating, the pull rope can be a high-strength nylon rope. Pull the iron clamp 126 downward. When the pulling force overcomes the attraction force of the magnetic seat 127 on the iron clamp 126, the locking of the safety pin 121 is released. At this time, the elastic potential energy of the spring 123 is used to quickly pop the safety pin 121 out of the pin hole. During the popping process, the elastic potential energy of the spring 123 is converted into the kinetic energy of the safety pin 121, so that the safety pin 121 can be smoothly removed from the pin hole, which prepares for the subsequent unhooking operation.

[0045] A guide structure, such as a sliding block, is provided between the safety pin 121 and the pin hole. After it is fully inserted into the pin hole, the through hole on it is aligned with the insertion hole 125, which facilitates the insertion of the iron clamp 126.

[0046] Example 2:

[0047] The difference between Embodiment 2 and Embodiment 1 is that the main hook body 110, auxiliary hook body 111, linkage block 112, and shackle 113 are connected by a pin. The pin is precisely sized and made of a material with high hardness and high wear resistance to ensure that it will not deform or be damaged when subjected to large tensile forces. The main hook body 110 has a first arc-shaped portion 115, the curvature of which is precisely calculated to perfectly match the structure on the auxiliary hook body 111. The auxiliary hook body 111 has a lifting hole 114, which is circular in shape and its size meets the requirements of lifting operations. It also has a second arc-shaped portion 116. When the main hook body 110 and auxiliary hook body 111 are locked, the first arc-shaped portion 115 and the second arc-shaped portion 116 form a circular release hole. The diameter and surface smoothness of this circular release hole are optimized so that the object being lifted can be stably suspended on it. By pulling the shackle 113 upwards, the circular release hole can be opened. During this process, the movement trajectory of the shackle 113 is designed to ensure that it can smoothly unlock the main hook body 110 and the auxiliary hook body 111 when pulled.

[0048] The shackle 113 has a connecting hole 117, which is a circular hole with a smooth interior. This connecting hole 117 is used to connect the release rope, which is made of high-tenacity polyester fiber rope, for the release operation. Regarding the pin hole design, the pin holes include a first circular hole 118, a second circular hole 119, and a third circular hole 120. The first circular hole 118 is located on one side of the shackle 113, and the third circular hole 120 is located on the other side. The main hook body 110 has a second circular hole 119. The first circular hole 118, the second circular hole 119, and the third circular hole 120 are located on the same axis, and their axis accuracy is controlled within a very small error range. This allows the safety pin 121 to pass through the first circular hole 118, the second circular hole 119, and finally through the third circular hole 120, extending from one side of the shackle 113 to the other. When the safety pin 121 passes through these circular holes, the fit with the inner wall of the holes is tight but not excessively stiff, ensuring smooth operation.

[0049] A connecting button 129 is installed on the main hook body 110. The connecting button 129 is made of sturdy metal with a rust-proof surface. The connecting button 129 is connected to a connecting rope 130, which is a soft yet strong thin rope. Its other end is connected to a safety pin 121, which is used to connect the safety pin 121 to the release device body 100 after the safety pin 121 is released, preventing the safety pin 121 from being lost. A guide groove 131 is provided at the top of the main hook body 110. The guide groove 131 is a narrow groove shape, and its width and depth are customized according to the size of the release rope. It can guide the release rope connected to the connecting hole 117. During the movement of the release rope, it can limit the position of the release rope and avoid tangling or deviation during the pulling process, ensuring the stability and reliability of the release operation. Furthermore, at least two limiting cylinders 132 are installed inside the wire groove 131. The diameter and length of the limiting cylinders 132 are adapted to the size of the wire groove 131 and are evenly distributed inside the wire groove 131. This can prevent the release rope inside the wire groove 131 from detaching from the wire groove 131, further improving the stability and reliability of the unhooking operation.

[0050] The main hook body 110 has an arc-shaped protrusion 133, which is semi-circular in shape, with a smooth surface and a certain curvature. The auxiliary hook body 111 has an arc-shaped recess 134, the shape of which perfectly matches the arc-shaped protrusion 133. The arc-shaped protrusion 133 and the arc-shaped recess 134 are adapted to complete the engagement. In the design of this engagement structure, the fitting accuracy has been strictly controlled, which can enhance the stability of the main hook body 110 and the auxiliary hook body 111 in the locked state, effectively prevent the relative displacement of the two during the tensile process, and ensure the reliability of the connection of the unhooker during operation. The meshing surfaces of the main hook body 110 and the auxiliary hook body 111, namely the arc-shaped protrusion 133 and the arc-shaped recess 134, are coated with a wear-resistant coating. This wear-resistant coating can improve the wear resistance of the meshing surfaces and extend the service life of the hook releaser. The wear-resistant coating can be a ceramic coating or a hard alloy coating. When applying the wear-resistant coating, an advanced spraying process is used to ensure the uniformity and firmness of the coating, so that the meshing surfaces of the main hook body 110 and the auxiliary hook body 111 can still maintain good performance under long-term use and high load.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hand-operated automatic unhooker comprising an unhooker body (100), characterized in that: The unhooker body (100) comprises a main hook body (110), an auxiliary hook body (111), a linkage block (112), a shackle (113), a pin hole and a safety pin (121); The unhooker body (100) further comprises an auxiliary unpin mechanism, which comprises: A mounting sleeve (122) is arranged outside the pin hole, and the safety pin (121) can be inserted into the inside of the mounting sleeve (122) through the pin hole; A spring (123) is installed in the inside of the mounting sleeve (122); A push plate (124) is connected to one side of the spring (123); An insertion hole (125) is formed in the bottom end and the top end of the mounting sleeve (122) and communicates with the inside of the mounting sleeve (122); An iron clamping rod (126) is inserted into the insertion hole (125) at the bottom of the mounting sleeve (122) and extends out of the insertion hole (125) at the top of the mounting sleeve (122) through the through hole on the safety pin (121), and is finally fixed and adsorbed by the iron seat (127) on the outer wall of the shackle (113); A connecting buckle (128) is arranged at the bottom end of the iron clamping rod (126), and when unpinning is needed, the pull rope is connected to the connecting buckle (128), and the iron clamping rod (126) is pulled downward to release the locking of the safety pin (121), and at this time, the safety pin (121) is withdrawn from the pin hole by relying on the elastic potential energy of the spring (123).

2. A hand-operated automatic unhooker according to claim 1, characterized in that: The main hook body (110), the auxiliary hook body (111), the linkage block (112) and the shackle (113) are connected by a pin shaft; the main hook body (110) has a first arc-shaped part (115), the auxiliary hook body (111) has a hoisting hole (114) and a second arc-shaped part (116); when the main hook body (110) and the auxiliary hook body (111) are locked, the first arc-shaped part (115) and the second arc-shaped part (116) form a circular release hole, and by pulling the shackle (113) upward, the circular release hole can be opened; the shackle (113) has a connecting hole (117) formed therein, which is used for connecting a release rope to perform a release operation.

3. A hand-operated automatic unhooker according to claim 1, characterized in that: The pin hole comprises a first circular hole (118), a second circular hole (119) and a third circular hole (120), one side of the shackle (113) has the first circular hole (118), the other side has the third circular hole (120), the main hook body (110) has the second circular hole (119), and the first circular hole (118), the second circular hole (119) and the third circular hole (120) are located on the same axis, so that the safety pin (121) can pass through the first circular hole (118), the second circular hole (119) and finally the third circular hole (120) in sequence, and extend from one side of the shackle (113) to the other side.

4. A hand-operated automatic unhooker according to any one of claims 1-3, characterized in that: The main hook body (110) is provided with a connecting button (129), the connecting button (129) is connected with a connecting rope (130), and the other end of the connecting rope (130) is connected with the safety pin (121), so that the safety pin (121) is connected to the unhooker main body (100) after the safety pin (121) is removed, and the safety pin (121) is prevented from being lost.

5. A hand-operated automatic unhooker according to claim 2, characterized in that: The top end of the main hook body (110) is provided with a wire guide groove (131), and the wire guide groove (131) is used for guiding a release rope connected with the connecting hole (117).

6. A hand-operated automatic unhooker according to claim 5, characterized in that: The wire guide groove (131) is internally provided with at least two limiting cylinders (132).

7. A hand-operated automatic unhooker according to claim 6, wherein: The main hook body (110) is provided with an arc-shaped protruding part (133), the auxiliary hook body (111) is provided with an arc-shaped recessed part (134), the arc-shaped protruding part (133) is matched with the arc-shaped recessed part (134), and engagement is completed.

8. A hand-operated automatic unhooker according to claim 7, characterized in that: The engagement surfaces of the main hook body (110) and the auxiliary hook body (111), that is, the surfaces of the arc-shaped protruding part (133) and the arc-shaped recessed part (134), are provided with wear-resistant coatings, and the wear-resistant coatings can be ceramic coatings or hard alloy coatings.

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