Expansion pipe with good fastening effect

Abstract

The utility model relates to an expansion pipe with a good fastening effect, which belongs to the technical field of expansion pipes and comprises an expansion pipe body, an external thread sleeve and a hexagon nut, the external thread sleeve and the hexagon nut are arranged on the expansion pipe body, the top surface and the bottom surface of the external thread sleeve are fixedly connected with positioning plates, and baffles are arranged at the top and the bottom of the hexagon nut. Limiting rods are fixedly connected to the opposite side faces of the two baffles, limiting holes are formed in the top face and the bottom face of the hexagon nut, and the two limiting rods extend into the two limiting holes correspondingly. According to the expansion pipe with the good fastening effect, through clearance fit between a limiting rod and a limiting hole, a hexagon nut is fixed, the stability and the fastening effect are improved, through attachment between a rubber ring and the limiting hole, the limiting rod is supported, the stability of the limiting rod is improved, meanwhile, through threaded connection between a driving rod and a screw rod, the fastening effect is good, and the fastening effect is good. And therefore, a worker can conveniently operate the device, and the device is more convenient and practical.

Description

Technical Field

[0001] This utility model relates to the field of expansion tube technology, specifically to an expansion tube with good fastening effect. Background Technology

[0002] Expansion tubes, also known as expansion bolts, are fasteners used to fix equipment to concrete surfaces or other materials. During installation, expansion tubes generate internal pressure, causing them to expand and creating friction within the outer casing material to secure the equipment. Expansion bolts are available in grades such as 45, 50, 60, 70, and 80.

[0003] Chinese patent CN213775966U discloses an expansion bolt with good fastening effect. This patent discloses a height adjustment technical solution, which solves the problem that when existing expansion bolts are fixed to the wall, they are usually fixed by a single expansion mechanism, which results in the expansion bolts not being tight enough and requiring a lot of time and effort to disassemble them.

[0004] When in use, this device improves the fastening effect by providing a double fixing effect to the expansion bolts. However, the hexagonal nut is threaded onto the threaded rod, which restricts the expansion sleeve. The hexagonal nut is exposed to the air, and when workers come into contact with it, it is easy to move the hexagonal nut, reducing stability. Therefore, an expansion tube with a better fastening effect is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an expansion tube with good fastening effect and improved stability. It solves the problem that while the device improves the fastening effect by providing a dual fixing effect to the expansion bolt, the hexagonal nut is threaded onto the threaded rod, restricting the expansion sleeve. However, the hexagonal nut is exposed to the air, and contact with it by workers can easily cause it to move, reducing stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an expansion tube with good fastening effect, comprising an expansion tube body and an external threaded sleeve and a hexagonal nut disposed on the expansion tube body, wherein positioning plates are fixedly connected to the top and bottom surfaces of the external threaded sleeve.

[0007] Both the top and bottom of the hexagonal nut are equipped with baffles, and limit rods are fixedly connected to the opposite sides of the two baffles. Limit holes are opened on the top and bottom surfaces of the hexagonal nut, and the two limit rods extend into the interior of the two limit holes respectively. Rubber rings are fixedly fitted on the outer peripheral walls of the two limit rods, and the two rubber rings are located inside the two limit holes respectively.

[0008] A support assembly is provided between the two positioning plates to support the baffle.

[0009] Furthermore, the opposite sides of the two baffles are respectively attached to the top and bottom surfaces of the hexagonal nut.

[0010] Furthermore, the two limiting rods are respectively fitted with the two limiting holes with clearance, and the two rubber rings are respectively attached to the two limiting holes.

[0011] Furthermore, the support assembly includes two drive rods, which are rotatably connected to opposite sides of two positioning plates via bearings. Each of the two baffles has a screw extending into the drive rod at one end fixedly connected to its side near the positioning plate. Positioning grooves are formed on the outer peripheral walls of both drive rods. Positioning rods extending into the positioning grooves are fixedly connected to opposite sides of both positioning plates. Sliding grooves are formed on the left side of both positioning plates. Sliding plates extending into the sliding grooves are fixedly connected to the sides of both baffles near the screws at one end.

[0012] Furthermore, both positioning plates are L-shaped plates, and the two sliding plates are slidably connected to the two sliding grooves respectively.

[0013] Furthermore, threaded holes are provided on the opposite sides of the two drive rods, and the two screws extend into the interior of the two threaded holes and are threadedly connected to them. The positioning rod is an L-shaped elastic rod, and the positioning groove is an annular groove. The positioning rod and the positioning groove fit together.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This expansion tube, with its excellent fastening effect, secures the hexagonal nut through a clearance fit between the limiting rod and the limiting hole, improving stability and fastening performance. The rubber ring and the limiting hole provide support for the limiting rod, enhancing its stability. Simultaneously, the threaded connection between the drive rod and the screw allows the limiting rod to move, facilitating operation and making it more convenient and practical for workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged structural diagram of A in the middle;

[0018] Figure 3 This is a top view of the top positioning plate in the structure of this utility model.

[0019] In the diagram: 1. Expansion tube body, 2. External threaded sleeve, 3. Sliding groove, 4. Positioning plate, 5. Sliding plate, 6. Positioning rod, 7. Drive rod, 8. Screw, 9. Baffle, 10. Rubber ring, 11. Limiting rod, 12. Hexagonal nut, 13. Limiting hole, 14. Positioning groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0021] Please see Figures 1 to 3 An expansion tube with good fastening effect in this embodiment includes an expansion tube body 1, an external threaded sleeve 2 and a hexagonal nut 12 disposed on the expansion tube body 1, and a positioning plate 4 is fixedly connected to the top and bottom surfaces of the external threaded sleeve 2.

[0022] A baffle 9 is placed on the top and bottom of the hexagonal nut 12. A limit rod 11 is fixedly connected to the opposite side of the two baffles 9. Limit holes 13 are opened on the top and bottom surfaces of the hexagonal nut 12. The two limit rods 11 extend into the interior of the two limit holes 13 respectively. Rubber rings 10 are fixedly fitted on the outer peripheral walls of the two limit rods 11. The two rubber rings 10 are located inside the two limit holes 13 respectively.

[0023] Among them, the two baffles 9 are respectively attached to the top and bottom surfaces of the hexagonal nut 12, the two limit rods 11 are respectively fitted with the two limit holes 13 with clearance, and the two rubber rings 10 are respectively attached to the two limit holes 13.

[0024] It should be noted that the expansion tube body 1 is a conventional device known to the public in the prior art, and its specific structure and working principle will not be described in detail in this article.

[0025] Specifically, after the hexagonal nut 12 is installed on the expansion tube body 1, the limiting rod 11 and the limiting hole 13 are located on the same center line. The limiting rod 11 is inserted into the interior of the limiting hole 13. The hexagonal nut 12 is restricted by the clearance fit between the limiting rod 11 and the limiting hole 13. The limiting rod 11 is supported by the fit between the rubber ring 10 and the limiting hole 13, thereby improving the stability of the limiting rod 11.

[0026] In this embodiment, a support assembly is provided between the two positioning plates 4. The support assembly includes two drive rods 7. The two drive rods 7 are rotatably connected to the opposite side of the two positioning plates 4 via bearings. A screw 8 extending into the drive rod 7 is fixedly connected to the side of the two baffles 9 near the positioning plates 4. A positioning groove 14 is provided on the outer peripheral wall of the two drive rods 7. A positioning rod 6 extending into the positioning groove 14 is fixedly connected to the opposite side of the two positioning plates 4. A sliding groove 3 is provided on the left side of the two positioning plates 4. A sliding plate 5 extending into the sliding groove 3 is fixedly connected to the side of the two baffles 9 near the screw 8.

[0027] Among them, both positioning plates 4 are L-shaped plates, the two sliding plates 5 are slidably connected to the two sliding grooves 3 respectively, the two drive rods 7 have threaded holes on their opposite sides, the two screws 8 extend into the interior of the two threaded holes and are threadedly connected to them, the positioning rod 6 is an L-shaped elastic rod, the positioning groove 14 is an annular groove, and the positioning rod 6 and the positioning groove 14 fit together.

[0028] Specifically, pull the positioning rod 6 to disengage it from the positioning groove 14, rotate the drive rod 7 to make it rotate, and through the threaded connection between the drive rod 7 and the screw 8 and the sliding connection between the sliding plate 5 and the sliding groove 3, the screw 8 drives the limit rod 11 to move downward through the baffle 9.

[0029] The working principle of the above embodiments is as follows:

[0030] After the hexagonal nut 12 is installed on the expansion tube body 1, the limiting rod 11 and the limiting hole 13 are located on the same center line. Pull the positioning rod 6 to disengage it from the positioning groove 14. Rotate the drive rod 7 to make it rotate. Through the threaded connection between the drive rod 7 and the screw 8 and the sliding connection between the sliding plate 5 and the sliding groove 3, the screw 8 drives the limiting rod 11 to move downward through the baffle 9. The limiting rod 11 is inserted into the interior of the limiting hole 13. The clearance fit between the limiting rod 11 and the limiting hole 13 restricts the hexagonal nut 12. The fit between the rubber ring 10 and the limiting hole 13 supports the limiting rod 11 and improves its stability.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 expansion tube with good fastening effect, comprising an expansion tube body (1) and an externally threaded sleeve (2) and a hexagonal nut (12) disposed on the expansion tube body (1), characterized in that: Positioning plates (4) are fixedly connected to both the top and bottom surfaces of the external threaded sleeve (2); The top and bottom of the hexagonal nut (12) are each equipped with a baffle (9), and a limiting rod (11) is fixedly connected to one of the opposite sides of the two baffles (9). The top and bottom surfaces of the hexagonal nut (12) are each provided with a limiting hole (13). The two limiting rods (11) extend into the two limiting holes (13) respectively. The outer peripheral walls of the two limiting rods (11) are each fixedly fitted with a rubber ring (10), and the two rubber rings (10) are located inside the two limiting holes (13) respectively. A support assembly is provided between the two positioning plates (4) to support the baffle (9).

2. The expansion tube with good fastening effect according to claim 1, characterized in that: The two baffles (9) are respectively attached to the top and bottom surfaces of the hexagonal nut (12) on opposite sides.

3. The expansion tube with good fastening effect according to claim 2, characterized in that: The two limiting rods (11) are respectively fitted with the two limiting holes (13) with clearance, and the two rubber rings (10) are respectively attached to the two limiting holes (13).

4. The expansion tube with good fastening effect according to claim 1, characterized in that: The support assembly includes two drive rods (7), which are rotatably connected to the opposite sides of two positioning plates (4) via bearings. Each of the two baffles (9) has a screw (8) with one end extending into the drive rod (7) fixedly connected to the side of the positioning plate (4). The outer peripheral walls of the two drive rods (7) are provided with positioning grooves (14). Each of the two positioning plates (4) has a positioning rod (6) with one end extending into the positioning groove (14) fixedly connected to the opposite side of the two positioning plates (4). Each of the two positioning plates (4) has a sliding groove (3) on the left side. Each of the two baffles (9) has a sliding plate (5) with one end extending into the sliding groove (3) fixedly connected to the side of the screw (8).

5. An expansion tube with good fastening effect according to claim 4, characterized in that: Both positioning plates (4) are L-shaped plates, and the two sliding plates (5) are slidably connected to the two sliding grooves (3) respectively.

6. The expansion tube with good fastening effect according to claim 5, characterized in that: The two drive rods (7) each have a threaded hole on one side facing each other. The two screws (8) extend into the two threaded holes and are threadedly connected to them. The positioning rod (6) is an L-shaped elastic rod. The positioning groove (14) is an annular groove. The positioning rod (6) and the positioning groove (14) fit together.

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