Automatic locking device for stand column guide sleeve

Abstract

The utility model discloses an automatic locking device of a stand column guide sleeve, which relates to the technical field of automatic locking of stand column guide sleeves, and comprises a cylinder body and a guide sleeve, the guide sleeve is sleeved on the surface of the cylinder body, fixture blocks are uniformly arranged on the surface of the guide sleeve, a movable groove is arranged on a cylinder opening of the cylinder body, a first threaded hole is arranged in the movable groove, and a second threaded hole is arranged in the first threaded hole. A clamping pin matched with the clamping block on the surface of the guide sleeve is arranged in the movable groove, a circular groove and a second threaded hole are formed in the surface of the clamping pin, and the circular groove and the second threaded hole correspond to the first threaded hole in the movable groove. According to the utility model, the design structure is reasonable, the movable clamping pin is designed on the cylinder body, the fixed clamping block is designed on the guide sleeve, and the guide sleeve and the cylinder body can be fixed through the mutual matching of the clamping pin and the clamping block; and the elastic mechanism is arranged between the bayonet lock and the cylinder body, so that the cylinder body can be clamped and connected one by one in the guide sleeve through the bayonet lock by utilizing the elasticity of the elastic mechanism, the fastening and anti-skidding functions are realized, and dust can be prevented from entering.

Description

Technical Field

[0001] This utility model relates to the field of automatic locking technology for column guide sleeves, specifically an automatic locking device for column guide sleeves. Background Technology

[0002] Due to frequent use and pressure, the guide sleeve of the existing column often loosens. Currently, the solution is to weld an L-shaped iron block onto the outer cylinder to hold the guide sleeve in place. However, during use, the weld often comes off, and the pressure causing the guide sleeve to rotate and rise can deform or detach the L-shaped iron block, leading to loosening. Furthermore, the L-shaped iron block attached to the outer cylinder affects the product's appearance and the company's image; its sharp edges can also easily damage or scratch other components. Transferring the assembly to welding or using welding equipment in the assembly area is time-consuming and poses safety risks (due to the weight of the cylinder and hot work). Therefore, we provide an automatic locking device for the column guide sleeve to solve these problems. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an automatic locking device for column guide sleeves.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic locking device for a column guide sleeve, comprising a cylinder and a guide sleeve, wherein the guide sleeve is fitted onto the surface of the cylinder, and the surface of the guide sleeve is uniformly provided with locking blocks. The cylinder mouth of the cylinder is provided with a movable groove, and a first threaded hole is provided in the movable groove. A locking pin adapted to the locking blocks on the surface of the guide sleeve is provided in the movable groove. A circular groove and a second threaded hole are provided on the surface of the locking pin. The circular groove and the second threaded hole correspond to the first threaded hole in the movable groove. The locking pin and the movable groove are fixed by a fixing screw through the circular groove, the second threaded hole, and the first threaded hole. The side of the locking pin is connected to the inner wall of the movable groove through a fixing mechanism and an elastic mechanism. A first rectangular thread is provided on the inner side of the cylinder, and a second rectangular thread is provided on the surface of the guide sleeve. When the cylinder and the guide sleeve are fitted, the first rectangular thread and the second rectangular thread mesh with each other.

[0007] Furthermore, the fixing mechanism includes a fixing rod, a positioning irregular block fixed at one end of the fixing rod, and a fixing hole opened at the other end of the fixing rod.

[0008] Furthermore, the cylinder body is provided with a positioning irregular hole and a closed threaded hole in sequence, and the fixing rod in the fixing mechanism passes through the positioning irregular hole and the closed threaded hole in sequence, and the positioning irregular block at one end of the fixing rod is stuck in the positioning irregular hole.

[0009] Furthermore, the elastic mechanism includes a limiting hole in the locking pin, a spring disposed in the limiting hole, a fixing pin whose other end is engaged with the spring, and the fixing pin is engaged with a fixing hole in one end of the fixing rod in the fixing mechanism.

[0010] Furthermore, one end of the locking block on the surface of the guide sleeve is arc-shaped, while the other end of the locking block is parallel.

[0011] Furthermore, a sealing screw is provided in the closed threaded hole of the cylinder body.

[0012] (III) Beneficial Effects:

[0013] Compared with existing technologies, this automatic locking device for column guide sleeves has the following advantages:

[0014] I. This utility model designs movable locking pins on the cylinder body and fixed locking blocks on the guide sleeve. The cooperation between the locking pins and the locking blocks can fix the guide sleeve and the cylinder body. An elastic mechanism is set between the locking pins and the cylinder body. The elasticity of the elastic mechanism allows the cylinder body to jump and lock the guide sleeve one by one through the locking pins, so as to achieve a fastening and anti-slip function and prevent dust from entering.

[0015] Second, this utility model can improve the service life of the fixing pin by applying anaerobic adhesive to the fixing pin, and also improve the movement of the locking pin. At the same time, the automatic locking device of the overall column guide sleeve is simple to install, and all processes can be completed directly in the assembly area without the need for transportation, which improves efficiency and reduces safety risks. The overall self-locking structure prevents the initial radial force of the guide sleeve, which can greatly reduce the risk of the guide sleeve going out. Attached Figure Description

[0016] Figure 1 This is a top view of the cylinder body of this utility model;

[0017] Figure 2 This is a partially enlarged structural diagram of the cylinder opening of this utility model;

[0018] Figure 3 This is a partially enlarged cross-sectional view of the cylinder opening of this utility model;

[0019] Figure 4 This is a top view of the guide sleeve of this utility model.

[0020] Figure 5 This is a side view of the guide sleeve of this utility model.

[0021] Figure 6 This is a schematic diagram of the fixing mechanism of this utility model;

[0022] Figure 7This is a partial sectional view of the cylinder opening of this utility model from the side;

[0023] Figure 8 This is a partially enlarged side view of the cylinder opening of this utility model.

[0024] Figure 9 This is a top-view enlarged structural diagram of the locking pin in this utility model;

[0025] Figure 10 This utility model Figure 9 Schematic diagram of the AA section structure.

[0026] In the diagram: 1. Cylinder body; 2. Mounting hole; 3. Fixing rod; 3-1. Fixing hole; 3-2. Positioning irregular block; 4. Movable groove; 5. First threaded hole; 6. First rectangular thread; 7. Fixing pin; 8. Spring; 9. Limiting hole; 10. Locking pin; 11. Fixing screw; 12. Closed threaded hole; 13. Positioning irregular hole; 14. Guide sleeve; 15. Locking block; 16. Second rectangular thread; 17. Closed screw; 18. Circular groove; 19. Second threaded hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1-10 As shown, this utility model provides a technical solution: an automatic locking device for a column guide sleeve 14, including a cylinder body 1 and a guide sleeve 14. The guide sleeve 14 is sleeved on the surface of the cylinder body 1. The surface of the guide sleeve 14 is uniformly provided with locking blocks 15. A movable groove 4 is opened on the cylinder opening of the cylinder body 1. A first threaded hole 5 is opened in the movable groove 4, and a locking pin 10 adapted to the locking blocks 15 on the surface of the guide sleeve 14 is provided in the movable groove 4. The surface of the locking pin 10 is provided with a circular groove 18 and a second threaded hole 19. The second threaded hole 19 corresponds to the first threaded hole 5 in the movable groove 4. The locking pin 10 and the movable groove 4 are fixed by the fixing screw 11 through the circular groove 8, the second threaded hole 19, and the first threaded hole 5. The side of the locking pin 10 is connected to the inner wall of the movable groove 4 by the fixing mechanism and the elastic mechanism. The inner side of the cylinder body 1 is provided with a first rectangular thread 6, and the surface of the guide sleeve 14 is provided with a second rectangular thread 16. When the cylinder body 1 and the guide sleeve 14 are assembled, the first rectangular thread 6 and the second rectangular thread 16 mesh with each other.

[0029] The above solution designs movable locking pins 10 on the cylinder body 1 and fixed locking blocks 15 on the guide sleeve 14. The cooperation between the locking pins 10 and the locking blocks 15 can fix the guide sleeve 14 and the cylinder body 1. The elastic mechanism between the locking pins 10 and the cylinder body 1 can use the elasticity of the elastic mechanism to make the cylinder body 1 jump and engage with the locking blocks 15 one by one through the locking pins 10 on the guide sleeve 14, so as to achieve a fastening and anti-slip function and prevent dust from entering.

[0030] Specifically, the fixing mechanism includes a fixing rod 3, a positioning irregular block 3-2 fixed at one end of the fixing rod 3, and a fixing hole 3-1 opened at the other end of the fixing rod 3. The cylinder body 1 is provided with a positioning irregular hole 13 and a closed threaded hole 12 in sequence. The fixing rod 3 in the fixing mechanism passes through the positioning irregular hole 13 and the closed threaded hole 12 in sequence, and the positioning irregular block 3-2 at one end of the fixing rod 3 is stuck in the positioning irregular hole 13. The positioning irregular block 3-2 at one end of the fixing rod 3 and the positioning irregular hole 13 can be a matching triangle, or any other non-circular fixing shape. By using the fixing mechanism, the elastic mechanism in the locking pin 10 can be fixed, so that the locking pin 10 can move back and forth in the movable groove 4, and the movable locking block 15 of the locking pin 10 can be engaged, preventing the overall device from loosening.

[0031] Specifically, the elastic mechanism includes a limiting hole 9 in the locking pin 10, a spring 8 in the limiting hole 9, a fixing pin 7 connected to the other end of the spring 8 by a locking block 15, and the fixing pin 7 connected to the fixing hole 3-1 locking block 15 in the fixing mechanism. Applying anaerobic adhesive to the fixing pin 7 can improve its service life and the movement of the locking pin 10. At the same time, the automatic locking device of the overall column guide sleeve 14 is easy to install and can complete all processes directly in the assembly area without transportation, improving efficiency and reducing safety risks. The overall self-locking structure prevents the initial radial force of the guide sleeve 14, which can greatly reduce the risk of the guide sleeve 14 going out.

[0032] Specifically, one end of the locking block 15 on the surface of the guide sleeve 14 is arc-shaped, and the other end of the locking block 15 is parallel. A sealing screw 17 is provided in the closed threaded hole 12 of the cylinder body 1.

[0033] Operating principle: When in use, the high-strength internal hexagon screw is passed through the circular groove 18 and the second threaded hole 19 of the retaining pin 10 and secured in the first threaded hole 5 of the movable groove 4. At this time, the arched back of the retaining pin 10 is close to the wall of the movable groove 4. Then, the fixing rod 3 is passed through the closed threaded hole 12, the positioning irregular hole 13, and the mounting hole 2 in sequence. At this time, the positioning irregular block 3-2 aligns with the retaining block 15 in the positioning irregular hole 13, and the fixing hole 3-1 corresponds to the limiting hole 9. Simultaneously, the sealing screw 17 is secured in the mounting hole 2. Anaerobic adhesive is applied to the threads of the fixing pin 7 and secured in the limiting hole 9. One end of the spring 8 is then inserted into the limiting hole. 9. The other end is inserted into the limiting hole 9. During installation, the guide sleeve 14 is placed into the cylinder mouth, and the second rectangular thread 16 engages with the first rectangular thread 6. When the locking pin 10 contacts the locking block 15, the locking pin 10 jumps one by one in the direction of restraint and the force given by the spring 8 until it is tightened. At this time, if there is a reverse force to open the guide sleeve 14, the locking pin 10 will press against the locking block 15 to prevent loosening. At the same time, the guide sleeve 14 covers the movable groove 4 completely to prevent dust from entering. When it is necessary to open the guide sleeve 14, simply remove the sealing screw 17, tighten the guide sleeve 14 slightly, and pull the fixing rod 3 outward to make the locking pin 10 disengage from the locking block 15.

[0034] It should be noted that in this document, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model 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 utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "fixed," "installed," "connected," and "linked" should be interpreted broadly. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "linked" can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic locking device for a column guide sleeve, comprising a cylinder (1) and a guide sleeve (14), characterized in that: The guide sleeve (14) is fitted onto the surface of the cylinder body (1). The surface of the guide sleeve (14) is uniformly provided with locking blocks (15). A movable groove (4) is provided on the cylinder port of the cylinder body (1). A first threaded hole (5) is provided in the movable groove (4), and a locking pin (10) adapted to the locking blocks (15) on the surface of the guide sleeve (14) is provided in the movable groove (4). A circular groove (18) and a second threaded hole (19) are provided on the surface of the locking pin (10). The circular groove (18) and the second threaded hole (19) are aligned with the first threaded hole (5) in the movable groove (4). Correspondingly, the locking pin (10) and the movable groove (4) are fixed by the fixing screw (11) through the circular groove (18), the second threaded hole (19) and the first threaded hole (5). The side of the locking pin (10) is connected to the inner wall of the movable groove (4) through the fixing mechanism and the elastic mechanism. The cylinder body (1) is provided with a first rectangular thread (6) on the inner side, and the guide sleeve (14) is provided with a second rectangular thread (16) on the surface. When the cylinder body (1) and the guide sleeve (14) are assembled, the first rectangular thread (6) and the second rectangular thread (16) mesh with each other.

2. The automatic locking device for the column guide sleeve according to claim 1, characterized in that: The fixing mechanism includes a fixing rod (3), a positioning irregular block (3-2) fixed at one end of the fixing rod (3), and a fixing hole (3-1) opened at the other end of the fixing rod (3).

3. The automatic locking device for the column guide sleeve according to claim 2, characterized in that: The cylinder body (1) is provided with a positioning irregular hole (13) and a closed threaded hole (12) in sequence. The fixing rod (3) in the fixing mechanism passes through the positioning irregular hole (13) and the closed threaded hole (12) in sequence, and the positioning irregular block (3-2) at one end of the fixing rod (3) is stuck in the positioning irregular hole (13).

4. The automatic locking device for the column guide sleeve according to claim 3, characterized in that: The elastic mechanism includes a limiting hole (9) opened in the locking pin (10), a spring (8) provided in the limiting hole (9), a fixing pin (7) connected to the other end of the spring (8) by a locking block (15), and the fixing pin (7) connected to the fixing hole (3-1) and locking block (15) opened at one end of the fixing rod (3) in the fixing mechanism.

5. The automatic locking device for the column guide sleeve according to claim 1, characterized in that: One end of the locking block (15) on the surface of the guide sleeve (14) is arc-shaped, and the other end of the locking block (15) is parallel.

6. The automatic locking device for the column guide sleeve according to claim 3, characterized in that: A sealing screw (17) is provided in the closed threaded hole (12) of the cylinder body (1).

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