A corrosion-resistant pin and a method of manufacturing the same

Abstract

The application relates to the technical field of pin shafts, in particular to an anti-corrosion pin shaft and a preparation method thereof. The surface of a pin shaft body is provided with an adjusting groove, the surface of the adjusting groove is provided with a displacement groove and an annular groove, the surface of the annular groove is provided with a positioning groove, the surface of an extension rod is provided with a locking column and a positioning block, the surface of the locking column is provided with a through groove, the through groove is provided with a baffle, the surface of the baffle is provided with a locking block and a driving plate, the surface of a driving column is provided with external threads and a hexagonal column. The beneficial effects are as follows: an outer hexagonal wrench is used to rotate the hexagonal column or an inner hexagonal wrench is inserted into an inner hexagonal groove to rotate, so that the driving column is driven to rotate and move downwards, the driving column is pressed to move outward when moving downwards, the locking block is driven to move to the outer side of the locking column, the pin shaft body is locked, the locking block is round compared with a traditional cotter pin, the locking block does not need to worry about scratching external people and things, and the use safety is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of pin technology, specifically to an anti-corrosion pin and its preparation method. Background Technology

[0002] A pin is a standardized fastener that can provide a static fixed connection or allow relative movement with the connected parts. It is mainly used at the hinge joint of two parts to form a hinge connection.

[0003] In the prior art, after the pin is processed, its surface needs to be treated. Grinding is used to eliminate surface defects and burrs. At the same time, surface treatment methods such as chrome plating are used to increase the corrosion resistance of the pin and achieve its durability. When using the pin, it is often locked by a cotter pin, that is, the cotter pin is inserted into the pin hole opened at the end of the pin to position it.

[0004] However, the traditional method of locking the pin with a cotter pin has certain safety hazards. After the cotter pin is inserted into the pin hole at the end of the pin, its end is exposed and relatively sharp, which can easily scratch or damage people and objects around it. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-corrosion pin and its preparation method, so as to solve the problem that the traditional method of locking the pin with a cotter pin mentioned in the background art has certain safety hazards. After the cotter pin is inserted into the pin hole at the end of the pin, its end is exposed and relatively sharp, which can easily scratch and damage people and things around it.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a corrosion-resistant pin, the corrosion-resistant pin comprising:

[0007] The main body of the pin shaft has an adjustment groove on its surface, a displacement groove and an annular groove on its surface, and a positioning groove on its surface.

[0008] Extension rod; the surface of the extension rod is provided with a locking pin and a positioning block, and the surface of the locking pin is provided with a through groove, the surface of the through groove is provided with a sliding groove, and a baffle is provided in the through groove, the surface of the baffle is provided with a locking block and a drive plate; and

[0009] Drive column; the surface of the drive column is provided with external threads and a hexagonal column.

[0010] Preferably, the adjustment groove is formed inside the main body of the pin and penetrates the bottom surface of the main body of the pin. There are two sets of displacement grooves, which are symmetrically distributed on both sides of the surface of the adjustment groove and penetrate out of the bottom surface of the main body of the pin.

[0011] Preferably, multiple annular grooves are formed, which are evenly distributed on the surface of the adjustment groove, and the annular grooves and the displacement grooves are connected. Two sets of positioning grooves are formed, which are symmetrically distributed on both sides below the surface of the annular grooves, and the widths of the positioning grooves and the displacement grooves are matched.

[0012] Preferably, the positioning blocks are provided in two sets, and the two sets of positioning blocks are symmetrically fixed on both sides of the top surface of the extension rod. The extension rod has a placement groove inside, which extends through the upper and lower ends of the extension rod. The locking post is fixed on the bottom surface of the extension rod, and the locking post has a fixing groove inside, which extends through the upper and lower ends of the locking post. The fixing groove and the placement groove are connected.

[0013] Preferably, the through groove is provided in two sets, which are symmetrically distributed below the surface of the locking post. The through groove and the fixing groove are connected, and the upper and lower surfaces of the through groove are symmetrically provided with sliding grooves, and the inner surface of the fixing groove is provided with internal threads.

[0014] Preferably, the upper and lower ends of the baffle are disposed in the sliding groove, the locking block is fixed in the middle of the outer end surface of the baffle, the drive plate is fixed in the middle of the inner end surface of the baffle, and the end face of the drive plate is inclined, the outer end of the locking block is disposed on the outside of the through groove, and the inner end of the drive plate is disposed in the fixing groove.

[0015] Preferably, the diameter of the extension rod is adapted to the inner diameter of the adjustment groove, the positioning block and the displacement groove correspond and are adapted in size, the extension rod is inserted into the adjustment groove, and the positioning block and the positioning groove correspond to each other. The positioning block is locked in the positioning groove, the diameter of the locking pin is greater than the diameter of the extension rod, and the diameter of the locking pin is equal to the diameter of the pin body.

[0016] Preferably, the external thread is located above the surface of the drive column, the outer side of the bottom surface of the drive column is inclined, the hexagonal column is fixed in the middle of the bottom surface of the drive column, and the bottom surface of the hexagonal column is provided with an internal hexagonal groove. The drive column is located in the fixed groove, the external thread and the internal thread are threadedly connected, and the outer side of the bottom surface of the drive column is pressed against the surface of the drive plate.

[0017] A method for preparing a corrosion-resistant pin, the method comprising the following steps:

[0018] Step 1: Improve the safety and durability of the pin body. When the pin body connects two parts, the hexagonal pin is rotated by turning an external hex wrench or an internal hexagonal wrench is inserted into the internal hexagonal slot and rotated, thereby driving the drive pin to rotate and move downward. When the drive pin moves downward, it presses the drive plate to move outward, thereby driving the locking block to move to the outside of the locking pin, thus locking the pin body. Compared with traditional cotter pins, the locking block is more rounded, so there is no need to worry about scratching external people and objects, thus effectively improving its safety. Furthermore, the pin body and its required accessories are chrome-plated to achieve corrosion resistance, thereby improving its durability.

[0019] Step Two: To improve the usability of the pin body, push the locking pin upwards to move the positioning block out of the positioning groove. Rotate the locking pin to change the orientation of the positioning block in the annular groove, moving it into the displacement groove. Then, adjust the position of the extension rod in the adjustment groove by moving the locking pin. After adjusting it to the appropriate position, rotate the locking pin again to move the positioning block in the annular groove to the positioning groove. Pull the locking pin downwards to engage the positioning block in the positioning groove to position the extension rod. Adjusting the extension rod increases the distance between the pin body and the locking pin, thus adjusting the usable length of the pin body. This allows it to effectively adapt to two parts with different spacings for connection, thereby improving its usability.

[0020] Step 3: To improve the performance of the drive column, after the positioning block is moved into the displacement groove, the extension rod can be moved out of the adjustment groove by pulling it downwards, making it easy to install and remove. By rotating the drive column in the opposite direction to move it upwards and disengage it from the internal thread, it can be poured out of the placement groove, making it easy to replace if damaged, thus improving its performance.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention proposes an anti-corrosion pin; when the pin body connects two parts,

[0023] 1. By turning the hexagonal pin with an external hex wrench or inserting an internal hexagonal wrench into the internal hexagonal slot, the drive pin is driven to rotate and move downward. When the drive pin moves downward, it presses the drive plate to move outward, thereby driving the locking block to move to the outside of the locking pin, thus locking the pin body. Compared with traditional cotter pins, the locking block is more rounded, so there is no need to worry about scratching external people and objects, thus effectively improving its safety in use.

[0024] 2. By pushing the locking pin upwards, the positioning block is moved out of the positioning groove. Rotating the locking pin causes the positioning block to rotate in the annular groove, changing its orientation and moving it into the displacement groove. Then, by moving the locking pin, the position of the extension rod in the adjustment groove is adjusted. After it is adjusted to the appropriate position, the locking pin is rotated again to move the positioning block in the annular groove to the positioning groove. By pulling the locking pin downwards, the positioning block is engaged in the positioning groove to position the extension rod. The adjustment of the extension rod increases the distance between the pin body and the locking pin, thereby adjusting the length of the pin body and effectively adapting it to connect two parts with different distances, thus improving its performance.

[0025] 3. When the positioning block is moved into the displacement groove, the extension rod can be moved out of the adjustment groove by pulling it downwards, which makes it easy to disassemble and assemble. By rotating the drive column in the opposite direction to move it upwards and disengage it from the internal thread, it can be poured out of the placement groove, which makes it easy to replace if it is damaged, thereby improving its performance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the main structure of the present invention;

[0028] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0029] Figure 4 This is a schematic diagram of the main structure of the pin shaft of the present invention;

[0030] Figure 5 This is a schematic diagram of the extension rod structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the extension rod structure of the present invention from another perspective;

[0032] Figure 7 This is a schematic diagram of the drive column structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the positioning structure of the present invention.

[0034] In the diagram: 1. Pin body, 2. Extension rod, 3. Locking post, 4. Locking block, 5. Adjustment groove, 6. Displacement groove, 7. Annular groove, 8. Positioning groove, 9. Placement groove, 10. Drive post, 11. Baffle, 12. Slide groove, 13. Drive plate, 14. Positioning block, 15. Through groove, 16. Fixing groove, 17. Internal thread, 18. External thread, 19. Hexagonal post, 20. Internal hexagonal groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0038] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0039] Please see Figures 1 to 8 The present invention provides a technical solution: a corrosion-resistant pin;

[0040] Example 1:

[0041] To improve the safety and durability of the pin body 1, an adjustment groove 5 is provided on the surface of the pin body 1. The extension rod 2 is inserted into the adjustment groove 5. A placement groove 9 is provided inside the extension rod 2. The locking pin 3 is fixed to the bottom surface of the extension rod 2, and a fixing groove 16 is provided inside the locking pin 3. The fixing groove 16 and the placement groove 9 are connected. The inner surface of the fixing groove 16 is provided with an internal thread 17. A through groove 15 is provided on the surface of the locking pin 3. A sliding groove 12 is provided on the surface of the through groove 15. A baffle 11 is provided in the through groove 15. A locking block 4 and a drive plate 13 are provided on the surface of the baffle 11. An external thread 18 and a hexagonal pin 19 are provided on the surface of the drive pin 10. An internal hexagonal groove 20 is provided on the bottom surface of the hexagonal pin 19. The pin body 1 is located in the fixed groove 16, with external thread 18 and internal thread 17 threaded connection. When the pin body 1 connects the two parts, the external hexagonal wrench is used to rotate the hexagonal column 19 or the internal hexagonal wrench is inserted into the internal hexagonal groove 20 to rotate, thereby driving the drive column 10 to rotate and move downward. When the drive column 10 moves downward, it presses the drive plate 13 to move outward, thereby driving the locking block 4 to move to the outside of the locking column 3, thereby locking the pin body 1. Compared with the traditional cotter pin, the locking block 4 is more rounded, so there is no need to worry about scratching external people and objects, thus effectively improving its safety. Furthermore, the surface of the pin body 1 and its required accessories is treated with chrome plating to achieve corrosion resistance, thereby improving its durability.

[0042] Example 2:

[0043] Based on Embodiment 1, in order to improve the performance of the pin body 1, a displacement groove 6 and an annular groove 7 are provided on the surface of the adjustment groove 5, and a positioning groove 8 is provided on the surface of the annular groove 7. A positioning block 14 is provided on the surface of the extension rod 2. By pushing the locking pin 3 upward, the positioning block 14 is moved out of the positioning groove 8. By rotating the locking pin 3, the positioning block 14 is rotated in the annular groove 7 to change its orientation and move into the displacement groove 6. Then, by moving the locking pin 3, the position of the extension rod 2 in the adjustment groove 5 is adjusted. After it is adjusted to a suitable position, the positioning block 14 is moved in the annular groove 7 to the positioning groove 8 by rotating the locking pin 3. By pulling the locking pin 3 downward, the positioning block 14 is engaged in the positioning groove 8 to position the extension rod 2. The adjustment of the extension rod 2 increases the distance between the pin body 1 and the locking pin 3, that is, it adjusts the length of the pin body 1, so that it can effectively adapt to the connection of two parts with different distances, thereby improving its performance.

[0044] Example 3:

[0045] Based on Embodiment 1, the performance of the drive column 10 is improved. When the positioning block 14 is moved into the displacement groove 6, the extension rod 2 can be moved out of the adjustment groove 5 by pulling it downward, which makes it easy to disassemble and assemble. Furthermore, by rotating the drive column 10 in the opposite direction to move it upward and disengage it from the screw connection with the internal thread 17, it can be poured out of the placement groove 9, which makes it easy to replace when it is damaged, thereby improving its performance.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistant pin, characterized by: The anti-corrosion pin shaft comprises: A pin shaft body (1); an adjusting groove (5) is arranged on the surface of the pin shaft body (1), displacement grooves (6) and annular grooves (7) are arranged on the surface of the adjusting groove (5), and positioning grooves (8) are arranged on the surface of the annular grooves (7); An extension rod (2); the surface of the extension rod (2) is provided with locking columns (3) and positioning blocks (14), the surface of the locking column (3) is provided with a through groove (15), the surface of the through groove (15) is provided with a sliding groove (12), the through groove (15) is provided with a baffle (11), the surface of the baffle (11) is provided with a locking block (4) and a driving plate (13); and A driving column (10); the surface of the driving column (10) is provided with external threads (18) and hexagonal columns (19), the adjusting groove (5) is arranged in the pin shaft body (1), the adjusting groove (5) penetrates through the bottom end surface of the pin shaft body (1), the displacement grooves (6) are provided in two groups, the two groups of displacement grooves (6) are symmetrically distributed on the two sides of the surface of the adjusting groove (5), and the displacement grooves (6) penetrate through the bottom end surface of the pin shaft body (1), the annular grooves (7) are provided in multiple, the multiple annular grooves (7) are uniformly distributed on the surface of the adjusting groove (5), the annular grooves (7) and the displacement grooves (6) are communicated, the positioning grooves (8) are provided in two groups, the two groups of positioning grooves (8) are symmetrically distributed below the two sides of the surface of the annular grooves (7), the widths of the positioning grooves (8) and the displacement grooves (6) are matched, the positioning blocks (14) are provided in two groups, the two groups of positioning blocks (14) are symmetrically fixed on the top end surface of the extension rod (2), the inside of the extension rod (2) is provided with a placing groove (9), the placing groove (9) penetrates through the upper and lower ends of the extension rod (2), the locking column (3) is fixed on the bottom end surface of the extension rod (2), the inside of the locking column (3) is provided with a fixing groove (16), the fixing groove (16) penetrates through the upper and lower ends of the locking column (3), the fixing groove (16) and the placing groove (9) are communicated, the through grooves (15) are provided in two groups, the two groups of through grooves (15) are symmetrically distributed below the surface of the locking column (3), the through grooves (15) and the fixing groove (16) are communicated, the upper and lower surfaces of the through groove (15) are symmetrically provided with the sliding grooves (12), the inside surface of the fixing groove (16) is provided with internal threads (17), the upper and lower ends of the baffle (11) are arranged in the sliding grooves (12), the locking block (4) is fixed in the middle of the outer end surface of the baffle (11), the driving plate (13) is fixed in the middle of the inner end surface of the baffle (11), the end surface of the driving plate (13) is inclined, the outer end of the locking block (4) is arranged outside the through groove (15), the inner end of the driving plate (13) is arranged in the fixing groove (16), the diameter of the extension rod (2) and the inner diameter of the adjusting groove (5) are matched, the positioning blocks (14) and the displacement grooves (6) are matched in size and correspond to each other, the extension rod (2) is inserted into the adjusting groove (5), the positioning blocks (14) and the positioning grooves (8) correspond to each other, the positioning blocks (14) are clamped in the positioning grooves (8), the diameter of the locking column (3) is greater than the diameter of the extension rod (2), and the diameter of the locking column (3) is equal to the diameter of the pin shaft body (1).

2. A corrosion resistant pin as defined in claim 1, wherein: The outer thread (18) is arranged above the surface of the driving column (10), the bottom end surface outside of the driving column (10) is inclined, the hexagonal column (19) is fixed in the middle of the bottom end surface of the driving column (10), the bottom end surface of the hexagonal column (19) is provided with an inner hexagonal groove (20), the driving column (10) is arranged in the fixed groove (16), the outer thread (18) and the inner thread (17) are threadedly connected, and the bottom end surface outside of the driving column (10) is pressed on the surface of the driving plate (13).

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