Self-locking type spring pin convenient to disassemble and assemble

Abstract

The utility model discloses a self-locking type spring pin convenient to disassemble and assemble, and relates to the field of hoisting operation construction of offshore oil engineering. The positioning pin main body; the head body is arranged at the end part of the positioning pin main body; the annular clamping spring is rotationally arranged on the head body; the clamping assembly is arranged at the other end of the positioning pin body and used for being matched with the annular clamping spring and the positioning pin body so that the connecting arm rod and the pin shaft on the pulling plate can be connected and positioned. According to the self-locking type spring pin convenient to disassemble and assemble, the self-locking type spring pin convenient to disassemble and assemble is installed on the pin shaft at the connecting position of the arm rod or the pull plate, and the circular self-locking type spring pin convenient to disassemble and assemble has a smaller space position compared with a rectangular zigzag lock pin; and the lock pin cannot be automatically opened due to collision with other structures during movement, so that the problem that the spring dual-rectangular-shaped lock pin is frequently automatically opened at the pull plate in relative movement is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of ocean petroleum engineering hoisting operation construction, concretely to a self -locking spring pin convenient to dismouting. BACKGROUND

[0002] In the ocean petroleum construction site, large hoisting equipment plays an important role, in hoisting or operation, usually need to connect the connecting arm rod or pull plate, and then will use to pin shaft, pin shaft can be connected to the installation of connecting arm rod or pull plate, pin shaft use process, usually according to the construction requirement of field frequently dismounts and installs.

[0003] The pin shaft of prior art usually uses spring catch, to limit the position of pin shaft, spring catch is usually locked in the static position more firmly, but in the daily work inspection, it is found that the catch often appears to open automatically in the relative motion pull plate, if not timely, the falling of lock pin can cause equipment and personnel injury, and bury the major safety risk for special operation, therefore, to avoid the occurrence of such events, the utility model discloses a self -locking spring pin convenient to dismouting, can effectively solve the occurrence of such problems, improve safety and production efficiency. UTILITY MODEL CONTENTS

[0004] In view of the deficiency of prior art, the utility model provides a self -locking spring pin convenient to dismouting, solves the problem that spring catch often appears to open automatically in the relative motion pull plate, if not timely, the falling of lock pin can cause equipment and personnel injury, and bury the major safety risk for special operation.

[0005] To realize the above object, the utility model is realized through the following technical scheme: a self -locking spring pin convenient to dismouting, comprising:

[0006] Positioning pin main body;

[0007] Head body, set up in the end of positioning pin main body;

[0008] Annular snap spring, rotation is set up on head body;

[0009] Clamping assembly, set up in the other end of positioning pin main body, the clamping assembly is used for cooperating with annular snap spring and positioning pin main body, to position the pin shaft connection on connecting arm rod and pull plate;

[0010] The positioning pin main body includes:

[0011] Main pin body, the main pin body is located between clamping assembly and head body;

[0012] Connecting column, the connecting column is fixedly connected to the end of main pin body;

[0013] screw thread, which is fixedly connected to the end of the connecting column;

[0014] a groove, which is arranged on the outside of the connecting column, and the inner cavity of the groove is matched with the annular snap spring.

[0015] Preferably, the material of the main pin body, the connecting column and the screw thread is high-strength carbon steel.

[0016] Preferably, the outside of the main pin body, the connecting column and the screw thread is plated with an anti-corrosion layer.

[0017] Preferably, the head body comprises:

[0018] a pin head, which is fixedly connected to the other end of the main pin body;

[0019] a mounting hole, which is arranged on the side of the pin head, and the two ends of the annular snap spring are respectively inserted into the inner part of the adjacent mounting hole.

[0020] Preferably, the material of the pin head is high-strength carbon steel, the outside of the pin head is plated with an anti-corrosion layer, and the pin head is used for enabling the annular snap spring to move in the degree sector space.

[0021] Preferably, the clamping assembly comprises:

[0022] a lock body shell, which is sleeved on the outside of the connecting column and the screw thread;

[0023] a compression spring, which is fixedly connected to the side of the inner wall of the lock body shell;

[0024] a U-shaped opening lock tongue, which is arranged on the outside of the lock body shell, and the annular snap spring is slidably inserted into the inner cavity of the U-shaped opening lock tongue.

[0025] Preferably, the compression spring is cylindrically sleeved on the outside of the screw thread, the material of the compression spring is high-strength carbon steel, and the outside of the compression spring is plated with an anti-corrosion layer.

[0026] Preferably, the clamping assembly further comprises:

[0027] a first through hole, which is arranged on the side of the lock body shell;

[0028] a second through hole, which is arranged in an annular array on the side of the lock body shell, and the inner cavity of the second through hole is arranged in a water drop type.

[0029] The utility model discloses a kind of self-locking spring pins convenient to disassemble and assemble, and it has the beneficial effects as follows:

[0030] The round convenient-to-disassemble self-locking spring pin has smaller space position relative to the rectangular spring pin, when the pin shaft at the connecting position of the arm lever or the pull plate is moved due to external force, the convenient-to-disassemble self-locking spring pin or the rectangular spring pin installed on the pin shaft will move together, but the convenient-to-disassemble self-locking spring pin occupies smaller space position and will not bump into other structures during movement, so that the spring pin is not automatically opened, and the situation that the spring pin is automatically opened during relative movement of the pull plate is solved, and major safety accidents caused by equipment and personnel injury due to the spring pin not being found in time are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0033] Figure 2 It is a schematic diagram of the structure of the lock body shell of the present application.

[0034] Figure 3 It is a schematic diagram of the structure of the connecting column of the present application.

[0035] Figure 4 It is a schematic diagram of the cross-sectional structure of the lock body shell of the present application.

[0036] Figure 5 It is a schematic diagram of the structure of the second through hole of the present application.

[0037] In the figure: 1, positioning pin body; 11, main pin body; 12, connecting column; 13, screw; 14, groove; 2, head body; 21, pin head; 22, mounting hole; 3, annular snap spring; 4, clamping assembly; 41, lock body shell; 42, compression spring; 43, first through hole; 44, second through hole; 45, U-shaped opening lock tongue. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0039] The embodiments of the present application provide a self-locking spring pin convenient to disassemble and assemble, solve the problem that the spring catch pin is often automatically opened at the relative motion pull plate, if not found in time, the device and personnel will be damaged after falling off, and a major safety risk is hidden in special operation, meanwhile, the efficiency of disassembly and assembly of the pin shaft according to the frequent on-site construction requirements and hand injury caused by limited position is improved during hoisting or operation of the large hoisting equipment.

[0040] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0041] The embodiments of the utility model disclose a self-locking spring pin convenient to disassemble and assemble.

[0042] According to the drawings Figure 1The utility model provides a kind of convenient dismounting self-locking spring pin, as shown in Figure 5, including positioning pin body 1, facilitate with the plug-in of pin shaft hole inner cavity on pin shaft, to limit the position of pin shaft;Head body 2, it is arranged at the end of positioning pin body 1, facilitate the rotation of annular snap spring 3 on it;Annular snap spring 3, rotation is arranged on head body 2, annular snap spring 3 is linear spring, annular snap spring 3 is facilitated by 180 degrees rotation, with the inner cavity of U-shaped opening lock tongue 45 on clamping assembly 4 and the inner cavity of recess 14 are clamped, in turn, facilitate the position locking of positioning pin body 1, avoid the situation of automatic opening;Clamping assembly 4, it is arranged at the other end of positioning pin body 1, facilitate with positioning pin body 1 and annular snap spring 3 cooperate, to limit the relative position of positioning pin body 1 and pin shaft, simultaneously facilitate the disassembly of positioning pin body 1, facilitate to improve pin shaft installation and disassembly efficiency, clamping assembly 4 is used for cooperating with annular snap spring 3 and positioning pin body 1, to position pin shaft connection on connecting arm rod and pull plate, positioning pin body 1 is installed on pin shaft at the connecting place of arm rod or pull plate, the space position of circular convenient dismounting self-locking spring pin is smaller relative to oblong back-shaped lock pin, when pin shaft at the connecting place of arm rod or pull plate moves due to external force, convenient dismounting self-locking spring pin or oblong back-shaped lock pin installed on pin shaft will move with it, but since the space position of circular convenient dismounting self-locking spring pin is smaller, it will not bump other structures when it moves and cause lock pin to open automatically, so that the situation that back-shaped lock pin often opens automatically at relatively moving pull plate is solved, and the efficiency of dismounting and installing pin shaft for installing connecting arm rod or pull plate in large hoisting equipment during hoisting or operation is improved according to the requirement of on-site construction, in addition, convenient dismounting self-locking spring pin has universality, can be used in various places needing safety pin, has greater industry economic benefit and popularization, when needing to limit the position of pin shaft, make positioning pin body 1 and pin hole inner cavity on pin shaft are inserted, then make clamping assembly 4 and the other end of positioning pin body 1 are sleeved, then make compression spring 42 and the outside of screw thread 13 are screw engaged, and the inner cavity of recess 14 and the inner cavity of U-shaped opening lock tongue 45 are corresponding, then push lock body shell 41 to move, compress compression spring 42, make the inner cavity of recess 14 and the inner cavity of U-shaped opening lock tongue 45 are aligned, then make annular snap spring 3 rotate 180 degrees, make annular snap spring 3 and the inner cavity of recess 14 and U-shaped opening lock tongue 45 are inserted, then release lock body shell 41, the elastic force of compression spring 42 pushes lock body shell 41 to restore original position, as shown in Figure Figure 1 , that is, the positioning of pin shaft is completed.

[0043] Further, the positioning pin body 1 comprises a main pin body 11, a connecting column 12, a screw thread 13 and a groove 14, the main pin body 11 is beneficial to be inserted into the inner cavity of the pin hole of the pin shaft, the connecting column 12 is beneficial to be inserted into the inner cavity of the lock body shell 41, so as to position the installation of the lock body shell 41, the screw thread 13 is beneficial to be screw-engaged with the inner cavity of the compression spring 42, and the screw thread surface is tangent to the wire diameter of the compression spring 42, the inner cavity of the groove 14 is beneficial to cooperate with the annular snap spring 3, the main pin body 11 is located between the clamping assembly 4 and the head body 2, the connecting column 12 is fixedly connected to the end of the main pin body 11, the screw thread 13 is fixedly connected to the end of the connecting column 12, the groove 14 is arranged on the outside of the connecting column 12, the inner cavity of the groove 14 cooperates with the annular snap spring 3, the main pin body 11, the connecting column 12 and the screw thread 13 are made of high-strength carbon steel, and the outside of the main pin body 11, the connecting column 12 and the screw thread 13 is plated with a corrosion-resistant layer.

[0044] Specifically, the head body 2 comprises a pin head 21 and a mounting hole 22, the pin head 21 is beneficial to support the main pin body 11, so as to facilitate the rotation of the annular snap spring 3 thereon, the mounting hole 22 is beneficial to facilitate the rotation of the annular snap spring 3 inside it, the pin head 21 is fixedly connected to the other end of the main pin body 11, the mounting hole 22 is arranged on the side of the pin head 21, the two ends of the annular snap spring 3 are respectively inserted into the inside of the adjacent mounting hole 22, the material of the pin head 21 is high-strength carbon steel, the outside of the pin head 21 is plated with a corrosion-resistant layer, and the pin head 21 is used to make the annular snap spring 3 move in a 180-degree sector space.

[0045] Specifically, the clamping assembly 4 comprises a lock body shell 41, a compression spring 42 and a U-shaped opening lock tongue 45, the lock body shell 41 is beneficial to be sleeved with the connecting column 12, so as to limit the position of the positioning pin body 1 and avoid the positioning pin body 1 from being separated from the pin shaft at will, the elastic force of the compression spring 42 is beneficial to push the lock body shell 41 to move, so as to facilitate the abutting and limiting of the U-shaped opening lock tongue 45 to the annular snap spring 3, as shown in Figure 1 , so as to limit the position of the annular snap spring 3 and avoid the annular snap spring 3 from being separated at will, the U-shaped opening lock tongue 45 is beneficial to be inserted and cooperated with the annular snap spring 3, and after the annular snap spring 3 enters the inner cavity of the U-shaped opening lock tongue 45, it enters the inside of the lock body shell 41, the inner wall of the lock body shell 41 limits the annular snap spring 3, the lock body shell 41 is sleeved outside the connecting column 12 and the screw thread 13, the compression spring 42 is fixedly connected to the side of the inner wall of the lock body shell 41, the U-shaped opening lock tongue 45 is arranged outside the lock body shell 41, the annular snap spring 3 is slidably inserted and connected with the inner cavity of the U-shaped opening lock tongue 45, the compression spring 42 is cylindrically and spirally sleeved outside the screw thread 13, the material of the compression spring 42 is high-strength carbon steel, and the outside of the compression spring 42 is plated with a corrosion-resistant layer.

[0046] More specifically, the clamping assembly 4 further comprises a first through hole 43 and a second through hole 44, the first through hole 43 is arranged on the side of the lock body shell 41, the second through hole 44 is arranged on the side of the lock body shell 41 in a ring array, the inner cavity of the second through hole 44 is arranged in a water drop type, which is beneficial to increase the raindrop-shaped anti-accumulation of water design, so as to achieve the effect of anti-corrosion and long service life, and facilitate the discharge of rainwater and snow.

[0047] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A self-locking spring pin that is easy to assemble and disassemble, characterized in that, include: Positioning pin body (1); The head (2) is located at the end of the positioning pin body (1); A ring snap ring (3) is rotatably mounted on the head body (2); A snap-fit ​​assembly (4) is provided at the other end of the positioning pin body (1). The snap-fit ​​assembly (4) is used to cooperate with the ring snap spring (3) and the positioning pin body (1) to position the pin connection on the connecting arm and the pull plate. The positioning pin body (1) includes: The main pin (11) is located between the snap-fit ​​assembly (4) and the head body (2); A connecting post (12) is fixedly connected to the end of the main pin (11); A threaded connection (13) is fixedly connected to the end of the connecting post (12); The groove (14) is located outside the connecting post (12), and the inner cavity of the groove (14) is engaged with the annular retaining ring (3).

2. The self-locking spring pin for easy disassembly and assembly according to claim 1, characterized in that, The main pin (11), connecting post (12) and thread (13) are all made of high-strength carbon steel.

3. The self-locking spring pin for easy disassembly and assembly according to claim 2, characterized in that, The outer surfaces of the main pin (11), connecting post (12) and thread (13) are all coated with an anti-corrosion layer.

4. The self-locking spring pin for easy disassembly and assembly according to claim 1, characterized in that, The head body (2) includes: Pin head (21), which is fixedly connected to the other end of the main pin body (11); Mounting hole (22) is provided on the side of pin head (21), and the two ends of the annular snap ring (3) are respectively inserted into the interior of the adjacent mounting hole (22).

5. A self-locking spring pin for easy disassembly and assembly according to claim 4, characterized in that, The pin (21) is made of high-strength carbon steel and has an anti-corrosion coating on its exterior. The pin (21) is used to make the ring snap ring (3) move in a 180-degree fan-shaped space.

6. The self-locking spring pin for easy disassembly and assembly according to claim 1, characterized in that, The snap-fit ​​assembly (4) includes: Lock body housing (41), which is sleeved on the outside of the connecting post (12) and the thread (13); Compression spring (42), the compression spring (42) is fixedly connected to the side of the inner wall of the lock body housing (41); The U-shaped open latch (45) is located on the outside of the lock body shell (41), and the annular snap ring (3) is slidably inserted into the inner cavity of the U-shaped open latch (45).

7. A self-locking spring pin for easy disassembly and assembly according to claim 6, characterized in that, The compression spring (42) is cylindrically spirally sleeved on the outside of the thread (13). The compression spring (42) is made of high-strength carbon steel and has an anti-corrosion layer plated on its exterior.

8. A self-locking spring pin for easy disassembly and assembly according to claim 6, characterized in that, The snap-fit ​​assembly (4) also includes: The first through hole (43) is opened on the side of the lock body shell (41); The second through hole (44) is arranged in a ring array on the side of the lock body shell (41), and the inner cavity of the second through hole (44) is arranged in a teardrop shape.

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