A crane truss arm pin anti-missed pin

Abstract

The utility model discloses a crane truss arm pin shaft anti -leakage pin, include: pin body, insert in crane truss arm pin shaft hole, for locking and hold the pin shaft, the pin body middle part is provided with the ejection piece, and the pin body end inner side is connected with the identification piece, and the ejection piece is in natural state when end portion and pin body abut. The pin body middle part is provided with the tower spring, and when installing the pin on the pin shaft, can utilize the elasticity of tower spring and make the pin that has not locked and hold the pin shaft automatic ejection, and further avoid the pin to appear and only insert the pin shaft hole but not locked situation's occurrence, the pin body end inner side is connected with the identification pearl with color, and the crane lock axle and pin engagement condition are carried out fast check from any angle before crane arm and operation, effectively improved the operation safety.

Description

Technical Field

[0001] This utility model relates to the field of lifting pin pin technology, specifically to a lifting pin for preventing leakage of the lifting pin of a crane truss arm. Background Technology

[0002] The crane truss boom is the core load-bearing component of a crane. It is constructed from steel sections or tubing, spliced ​​together at nodes to form a triangular truss structure. Widely used in heavy-duty lifting, construction projects, and port loading and unloading, it effectively balances loads and wind loads while transmitting lifting force, ensuring safe and efficient operation. The pin pin, a critical safety connector in the crane truss boom structure, is primarily used to secure the pin, preventing it from loosening due to vibration, load changes, or other factors during operation. This ensures the stability of the connection between the boom sections and avoids accidents such as boom detachment.

[0003] Currently, the installation of crane truss boom pins still relies mainly on manual checks by operators. In large construction sites, especially wind power installation sites, due to high project schedule requirements, crane truss booms often need to be assembled and disassembled multiple times within a week. These scenarios generally involve complex environments, high work intensity, and continuous operation leading to operator fatigue, resulting in frequent instances of missing pins, improper locking, or insecure clamping. Once such hazards occur, the pins are very likely to come loose during crane operation, directly compromising the connection stability of the truss boom and affecting the overall structural safety of the crane. In severe cases, this can lead to major safety accidents such as equipment overturning and component damage, causing equipment damage and personal injury. Utility Model Content

[0004] The purpose of this utility model is to solve the above problems by providing a shim pin for preventing leakage of the crane truss boom pin.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution, including: The main body of the pin is inserted into the pin hole of the crane truss arm to lock and hold the pin in place; The pin body has a pop-out component in the middle and an identification component snapped into the inner side of the end of the pin body. When the pop-out component is in its natural state, its end abuts against the pin body.

[0006] As a further description of the above technical solution, the pin body is made of metal and is integrally formed.

[0007] As a further description of the above technical solution, the pin body includes a winding portion, which is spiral in shape.

[0008] As a further description of the above technical solution, a first support portion is provided extending from the top of the winding portion, and a second support portion is provided extending from the bottom of the winding portion.

[0009] As a further description of the above technical solution, the second support portion extends to provide an overlapping portion, which engages with the first support portion.

[0010] As a further description of the above technical solution, the pop-out member is inserted through the first support portion, and when the pop-out member is released, its ends abut against the wrapping portion and the overlapping portion respectively.

[0011] As a further description of the above technical solution, the pop-out element is a tower spring, and the wire diameter of the pop-out element is less than or equal to the wire diameter of the pin body.

[0012] As a further description of the above technical solution, the minimum outer diameter of the pop-out member is 40%-60% of the maximum outer diameter, and the outer diameter of the pop-out member gradually increases along the direction away from the winding part.

[0013] As a further description of the above technical solution, the identification element is an identification bead, and the identification element is snapped into the inside of the winding part.

[0014] As a further description of the above technical solution, the diameter of the identification element is greater than or equal to the bending diameter of the connecting part, and the identification element is spherical.

[0015] The beneficial effects of this utility model are as follows: In this invention, a tower spring is inserted through the middle of the pin body. When the pin is installed on the pin shaft, the elasticity of the tower spring can be used to automatically pop out any pins that are not locked and stuck on the pin shaft, thereby preventing the pin from being inserted into the pin shaft hole but not locked. A colored identification bead is snapped into the inner side of the end of the pin body, which facilitates a quick check of the engagement of the crane locking shaft and the pin from any angle before the crane boom is raised and during operation, effectively improving operational safety.

[0016] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the anti-leakage pin for the crane truss arm pin of this utility model; Figure 2 yes Figure 1 A schematic diagram of the main body of the safety pin; Figure 3 yes Figure 1 A schematic diagram of the ejector component.

[0018] Figure label: 1. Pin body; 11. Wrapping part; 12. First support part; 13. Second support part; 14. Overlapping part; 2. Pop-out part; 3. Identification part. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figures 1-3 As shown, in one embodiment, a locking pin for preventing leakage of a crane truss boom pin includes: a locking pin body 1, which is inserted into the hole of the crane truss boom pin to lock and secure the pin, thereby preventing the pin from loosening or coming out during operation.

[0021] In some embodiments, the pin body 1 is made of high-strength metal material, which is suitable for the requirements of complex working conditions on construction sites for component strength, wear resistance and fatigue resistance; at the same time, the pin body 1 is processed by one-piece molding process, which not only ensures the integrity and mechanical stability of the overall structure, but also reduces the error and loosening risk caused by the assembly of multiple parts, and improves the service life of the pin in repeated disassembly and assembly scenarios.

[0022] For example, the pin body 1 includes a spiral portion 11, which can effectively enhance the connection stability between the pin and the pin hole.

[0023] Furthermore, the top of the wrapping part 11 is provided with a first support part 12, which serves as a piercing needle when inserting the pin, providing both guidance and safety, and allowing for quick and accurate insertion into the pin hole. Correspondingly, the bottom of the wrapping part 11 is provided with a second support part 13, and the second support part 13 is provided with an overlapping part 14. The overlapping part 14 engages with the first support part 12, serving as a safety pin when the pin is not inserted, preventing the pin from accidentally falling off or being mistakenly inserted.

[0024] Please continue reading. Figures 1-3 In this embodiment, a pop-out member 2 is provided in the middle of the pin body 1, and the end of the pop-out member 2 abuts against the pin body 1 when it is in its natural state.

[0025] For example, the pop-out member 2 passes through the first support portion 12, and when the pop-out member 2 is relaxed (not compressed by external force), its ends abut against the wrapping portion 11 and the overlapping portion 14 respectively.

[0026] In some embodiments, the pop-out element 2 is a tower spring, and the wire diameter of the pop-out element 2 is less than or equal to the wire diameter of the pin body 1. The outer diameter of the pop-out element 2 gradually increases in the direction away from the winding part 11 to adapt to the force changes during the pin insertion process and ensure the smoothness and reliability of the pop-out action.

[0027] In some embodiments, the minimum outer diameter of the pop-out member 2 is 40%-60% of the maximum outer diameter. Optionally, in some embodiments, the minimum outer diameter of the pop-out member 2 is 45%-55% of the maximum outer diameter. Exemplarily, the minimum outer diameter of the pop-out member 2 is 40%, 45%, 50%, 55%, 60% of the maximum outer diameter, or a range consisting of any two of the above values.

[0028] Understandably, a spring is inserted through the middle of the main body 1 of the pin. When the operator installs the pin on the pin shaft, if the pin is only inserted into the pin shaft hole but not fully locked, the elasticity of the spring can be used to automatically pop out the pin that is not locked and stuck on the pin shaft. This avoids the situation where the pin is only inserted into the pin shaft hole but not locked. There is no need to rely on manual judgment, which effectively reduces the risk of the pin not being locked due to operational negligence and improves the reliability of assembly.

[0029] Please continue reading. Figures 1-3 In this embodiment, an identification element 3 is snapped into the inner side of the end of the pin body 1.

[0030] For example, the identification element 3 is selected as a marker bead with a bright color, and the identification element 3 is snapped into the inside of the winding part 11.

[0031] In some embodiments, the diameter of the identification element 3 is greater than or equal to the bending diameter of the connecting part 11, which can effectively prevent the identification element 3 from falling off due to vibration or collision during operation; and the spherical structure allows it to present a clear color when viewed from any angle, and the color selection forms a strong visual contrast with the surrounding components such as the crane truss arm and pin (for example, using warning colors such as red and bright yellow), so that it can be quickly identified even in complex scenarios such as strong light, rain, and high altitude, which significantly reduces the difficulty of inspection for on-site personnel.

[0032] Understandably, during routine inspections before crane boom raising and dynamic observations during operation, operators can quickly determine the engagement status of the pin and the shaft from any angle without close contact or disassembly. This design not only improves inspection efficiency and shortens preparation time, but also avoids potential omissions due to incomplete inspections, effectively enhancing operational safety.

[0033] 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 type of anti-leakage pin for crane truss boom pins, characterized in that, include: The main body of the pin (1) is inserted into the pin hole of the crane truss arm to lock and hold the pin. The pin body (1) has a pop-out piece (2) inserted through the middle, and an identification piece (3) is snapped into the inner side of the end of the pin body (1). When the pop-out piece (2) is in its natural state, its end abuts against the pin body (1).

2. The anti-leakage pin for the crane truss boom pin according to claim 1, characterized in that, The pin body (1) is made of metal and is integrally formed.

3. The anti-leakage pin for the crane truss boom pin according to claim 2, characterized in that, The pin body (1) includes a winding part (11), which is spiral in shape.

4. The anti-leakage pin for the crane truss boom pin according to claim 3, characterized in that, The top of the winding part (11) is provided with a first support part (12), and the bottom of the winding part (11) is provided with a second support part (13).

5. The anti-leakage pin for the crane truss boom pin according to claim 4, characterized in that, The second support part (13) extends to provide an overlapping part (14), which is engaged with the first support part (12).

6. The anti-leakage pin for the crane truss boom pin according to claim 1, characterized in that, The pop-out part (2) is inserted on the first support part (12), and when the pop-out part (2) is released, its ends abut against the wrapping part (11) and the overlapping part (14) respectively.

7. The anti-leakage pin for the crane truss boom pin according to claim 6, characterized in that, The pop-out element (2) is a tower spring, and the wire diameter of the pop-out element (2) is less than or equal to the wire diameter of the pin body (1).

8. The anti-leakage pin for the crane truss boom pin according to claim 7, characterized in that, The minimum outer diameter of the pop-out member (2) is 40%-60% of the maximum outer diameter, and the outer diameter of the pop-out member (2) gradually increases along the direction away from the winding part (11).

9. The anti-leakage pin for the crane truss boom pin according to claim 1, characterized in that, The identification element (3) is an identification bead, and the identification element (3) is snapped into the inside of the winding part (11).

10. The anti-leakage pin for the crane truss boom pin according to claim 9, characterized in that, The diameter of the identification element (3) is greater than or equal to the bending diameter of the wrapping part (11), and the identification element (3) is spherical.

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