Pre-embedded U-shaped bolt for high-speed rail bridge pier hanging fence

Abstract

The utility model relates to the technical field of fasteners, and provides a high-speed rail pier hanging fence pre-embedded U-shaped bolt which comprises two identical mounting blocks, the front sides of the mounting blocks are rotatably connected with a mounting shell, the inner wall of the mounting shell is provided with adjusting grooves which are opposite in the front-back direction, and the interiors of the adjusting grooves are slidably connected with limiting blocks. A hexagonal nut is fixedly connected between the two limiting blocks, a connecting block is fixedly connected to the left end of the inner wall of the hexagonal nut, and a positioning ring is fixedly connected to the right side of the connecting block. According to the adjustable bolt, through cooperation of the adjusting groove, the limiting block, the hexagon nut, the guide cylinder, the connecting block, the positioning ring, the positioning cylinder, the adjusting ring and the spring, the effect of adjusting the bolt body is achieved, the length of the bolt can be adjusted to a certain degree according to the actual condition of a connector during installation, and the adjustable bolt can be suitable for different installation conditions; and the situation that the bolt is bent and twisted due to forced installation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a pre-embedded U-shaped bolt for a hanging fence of a high-speed railway bridge pier. Background Art

[0002] U-bolts are commonly used for fastening connectors in motor vehicles. They are usually made of round steel. Threaded portions with external threads are provided at both ends of the bolts. The threaded portions cooperate with special nuts to achieve fastening connections between different components.

[0003] After searching, the existing patent (Announcement No.: CN204127075U) discloses a U-shaped bolt, including a straight column section parallel to each other on both sides and a curved section connecting the two straight column sections. The straight column section is divided into a connecting section and a threaded section. The threaded section is connected to the curved section through the connecting section, and an external thread is arranged on the outer wall of the threaded section; the working surface of the connecting section is a plane, and the working surface of the curved section is a bent plane, and the working surfaces of the two have a smooth transition. When such a U-shaped bolt is used, its working surface is completely in surface contact with the fastened object, and the contact area reaches 100%, which has a good fastening effect. When preparing the U-shaped bolt of the utility model, it is only necessary to cold-press the entire long strip of solid round steel, press out one or a pair of planes in the length direction, then roll the corresponding part of the threaded section, form an external thread on the arc-shaped part on the outer wall of the corresponding part of the threaded section, and finally bend the corresponding part of the curved section into a curved shape, and the processing technology is extremely simple. In order to make the threaded section work more reliably, the threaded section can be cold-pressed into a cylindrical shape again.

[0004] However, in the above solution, the structure is relatively simple, and the bolts are an integrated fixed structure as a whole, which cannot be adjusted during installation, resulting in the possibility of twisting of the bolts during installation, greatly reducing the convenience of use.

[0005] In view of this, the utility model proposes a pre-embedded U-bolt for a high-speed railway bridge pier hanging fence. Utility Model Content

[0006] The utility model provides a pre-buried U-shaped bolt for a hanging fence of a high-speed railway bridge pier, which solves the problem in the related art that the bolt cannot be adjusted during installation.

[0007] The technical solution of the utility model is as follows: a pre-embedded U-bolt for a high-speed railway pier hanging fence, comprising two identical mounting blocks, a mounting shell being rotatably connected to the front side of the mounting block, a front and rear adjusting groove being opened on the inner wall of the mounting shell, a limiting block being slidably connected inside the adjusting groove, a hexagonal nut being fixedly connected between the two limiting blocks, a connecting block being fixedly connected to the left end of the inner wall of the hexagonal nut, a positioning ring being fixedly connected to the right side of the connecting block, a guide cylinder being fixedly connected to the right end of the inner wall of the guide cylinder, a spring being fixedly connected to the left end of the spring, an adjusting ring being fixedly connected to the left end, and a positioning cylinder being fixedly connected between the adjusting ring and the positioning ring.

[0008] Preferably, the adjustment ring is slidably connected to the middle part of the inner wall of the guide cylinder, and the adjustment ring and the guide cylinder are correspondingly arranged.

[0009] Preferably, the connecting block, the positioning ring, the positioning cylinder and the adjusting ring are all coaxially arranged, and the positioning cylinder is arranged through the middle of the inner wall of the mounting shell.

[0010] Preferably, a connecting ring is fixedly connected between the two mounting blocks, and the connecting ring is arranged in a U shape.

[0011] Preferably, a bolt body is fixedly connected to the left side of the connecting block, and a left end of the inner wall of the bolt body is provided with evenly distributed connecting grooves.

[0012] Preferably, an internal thread groove is provided at the left end of the inner wall of the bolt body.

[0013] Preferably, a fixing block is arranged on the left side of the bolt body, and the fixing block is arranged in a frustum shape.

[0014] Preferably, an external threaded portion is provided on the outer side of the fixing block, and the external threaded portion is threadedly connected to the inside of the internal threaded groove.

[0015] The working principle and beneficial effects of the utility model are:

[0016] In the utility model, the adjustment effect of the bolt body is achieved through the cooperation between the adjustment groove, the limit block hexagonal nut, the guide cylinder, the connecting block, the positioning ring, the positioning cylinder, the adjustment ring and the spring. During installation, the length of the bolt can be adjusted to a certain extent according to the actual situation at the interface, so that it can be suitable for different installation situations, avoiding the bending and twisting of the bolt due to forced installation, and further improving its applicability and convenience.

[0017] In the utility model, the cooperation of the connecting groove, the internal thread groove, the fixing block and the external thread part can achieve the effect of preventing the bolt from falling off during installation, and the U-bolt can be effectively fixed in the bridge pier and firmly fixed in the concrete structure through the expansion effect, thereby ensuring the stability and safety of the hanging fence, and at the same time, the fixing force can be evenly distributed, reducing the damage to the bridge pier and the U-bolt, and extending their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is an isometric stereoscopic schematic diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the bolt body of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the installation shell of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the hexagonal nut of the utility model;

[0023] Figure 5 It is a schematic diagram of the disassembled structure of the bolt body of the utility model.

[0024] In the figure: 1. mounting block; 2. connecting ring; 3. mounting shell; 4. adjusting groove; 5. limiting block; 6. hexagonal nut; 7. guide cylinder; 8. connecting block; 9. positioning ring; 10. positioning cylinder; 11. adjusting ring; 12. spring; 13. bolt body; 14. connecting groove; 15. internal thread groove; 16. fixing block; 17. external thread part. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0026] The preferred embodiment of the high-speed railway bridge pier hanging fence embedded U-shaped bolts provided by the utility model is as follows: Figures 1 to 5As shown: a pre-buried U-shaped bolt for hanging fence of high-speed railway pier, including two identical mounting blocks 1, the front side of the mounting block 1 is rotatably connected with a mounting shell 3, the mounting block 1 has a fixing effect on the mounting shell 3, the inner wall of the mounting shell 3 is provided with front and rear relative adjustment grooves 4, the inner part of the adjustment groove 4 is slidably connected with a limit block 5, the limit block 5 can move within the range of the adjustment groove 4, a hexagonal nut 6 is fixedly connected between the two limit blocks 5, the limit block 5 has a fixing effect on the hexagonal nut 6, the left end of the inner wall of the hexagonal nut 6 is fixedly connected with a connecting block 8, the hexagonal nut 6 has a fixing effect on the connecting block 8 It has a fixing effect. A positioning ring 9 is fixedly connected to the right side of the connecting block 8, and the connecting block 8 fixes the positioning ring 9. A guide cylinder 7 is fixedly connected to the right end of the inside of the mounting block 1, and the mounting block 1 fixes the guide cylinder 7. A spring 12 is fixedly connected to the right end of the inner wall of the guide cylinder 7 to further improve the stability of the spring 12. An adjusting ring 11 is fixedly connected to the left end of the spring 12, and the spring 12 fixes the adjusting ring 11. A positioning cylinder 10 is fixedly connected between the adjusting ring 11 and the positioning ring 9 to further improve the stability of the positioning cylinder 10.

[0027] In this embodiment, the adjustment ring 11 is slidably connected to the middle of the inner wall of the guide cylinder 7. The adjustment ring 11 and the guide cylinder 7 are correspondingly arranged. The adjustment ring 11 slides inside the guide cylinder 7, thereby causing the spring 12 to contract.

[0028] In this embodiment, the connecting block 8, the positioning ring 9, the positioning cylinder 10 and the adjusting ring 11 are all coaxially arranged to further enhance the stability between the structures and prevent the occurrence of deviation. The positioning cylinder 10 is arranged through the middle of the inner wall of the mounting shell 3.

[0029] In this embodiment, a connecting ring 2 is fixedly connected between the two mounting blocks 1. The connecting ring 2 fixes the mounting blocks 1 and is arranged in a U shape. Example 2

[0030] On the basis of Example 1, a preferred embodiment of the high-speed railway bridge pier hanging fence embedded U-shaped bolts provided by the utility model is as follows: Figures 1 to 5 As shown, a bolt body 13 is fixedly connected to the left side of the connecting block 8, and the connecting block 8 fixes the bolt body 13. The left end of the inner wall of the bolt body 13 is provided with evenly distributed connecting grooves 14.

[0031] In this embodiment, an internal thread groove 15 is formed at the left end of the inner wall of the bolt body 13 .

[0032] In this embodiment, a fixing block 16 is disposed on the left side of the bolt body 13 . The fixing block 16 is disposed in a frustum shape, and the outer diameter of the fixing block 16 is greater than the inner diameter.

[0033] In this embodiment, an external threaded portion 17 is provided on the outside of the fixing block 16, and the external threaded portion 17 is threadedly connected to the inside of the internal threaded groove 15. The external threaded portion 17 and the internal threaded groove 15 are correspondingly arranged. The fixing block 16 continuously enters the inside of the internal threaded groove 15, so that the bottom of the bolt body 13 expands outward and deforms, and is firmly fixed in the concrete structure through the expansion effect, thereby ensuring the stability and safety of the suspended fence.

[0034] The working principle and use process of the utility model are as follows: first, during installation, the bolt body 13 is pushed inwardly so that the connecting block 8 moves inwardly synchronously, and further drives the hexagonal nut 6 to move inwardly, and the hexagonal nut 6 drives the limit block 5 to move inside the adjusting groove 4 during the movement, thereby limiting the hexagonal nut 6 itself to avoid excessive displacement, and the positioning cylinder 10 is driven to move by the movement of the hexagonal nut 6, further driving the adjusting ring 11 to slide inside the guide cylinder 7, and the spring 12 is forced to contract, thereby achieving the effect of adjusting the installation position of the bolt body 13, and the length of the bolt can be adjusted to a certain extent according to the actual situation at the interface during installation. The degree of adjustment makes it suitable for different installation situations, avoiding the bending and twisting of the bolts caused by forced installation, further improving its applicability and convenience. The fixing block 16 is placed in the embedded position, and the bolt body 13 is continuously screwed inward. When the external thread portion 17 contacts the internal thread groove 15, the bolt body 13 continues to be screwed, and the fixing block 16 continues to enter the internal thread groove 15, so that the bottom of the bolt body 13 expands outward and deforms, and is firmly fixed in the concrete structure through the expansion effect, thereby ensuring the stability and safety of the suspended fence, and evenly distributing the fixing force, reducing damage to the piers and U-bolts, and extending their service life.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-speed railway bridge pier hanging fence embedded U-bolt, comprising two identical mounting blocks (1), characterized in that: The front side of the mounting block (1) is rotatably connected to a mounting shell (3); the inner wall of the mounting shell (3) is provided with front and rear opposite adjustment grooves (4); a limit block (5) is slidably connected inside the adjustment groove (4); a hexagonal nut (6) is fixedly connected between the two limit blocks (5); a connecting block (8) is fixedly connected to the left end of the inner wall of the hexagonal nut (6); a positioning ring (9) is fixedly connected to the right side of the connecting block (8); a guide cylinder (7) is fixedly connected to the right end of the inner wall of the guide cylinder (7); an adjustment ring (11) is fixedly connected to the left end of the spring (12); a positioning cylinder (10) is fixedly connected between the adjustment ring (11) and the positioning ring (9).

2. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 1, characterized in that: The adjusting ring (11) is slidably connected to the middle part of the inner wall of the guide cylinder (7), and the adjusting ring (11) and the guide cylinder (7) are arranged correspondingly.

3. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 1, characterized in that: The connecting block (8), the positioning ring (9), the positioning cylinder (10) and the adjusting ring (11) are all coaxially arranged, and the positioning cylinder (10) is arranged to penetrate the middle of the inner wall of the mounting shell (3).

4. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 1, characterized in that: A connecting ring (2) is fixedly connected between the two mounting blocks (1), and the connecting ring (2) is arranged in a U shape.

5. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 1, characterized in that: A bolt body (13) is fixedly connected to the left side of the connection block (8), and evenly distributed communication grooves (14) are provided at the left end of the inner wall of the bolt body (13).

6. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 5, characterized in that: An internal thread groove (15) is formed at the left end of the inner wall of the bolt body (13).

7. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 6, characterized in that: A fixing block (16) is arranged on the left side of the bolt body (13), and the fixing block (16) is arranged in a frustum shape.

8. The high-speed railway bridge pier hanging fence embedded U-shaped bolt according to claim 7, characterized in that: An external threaded portion (17) is provided on the outside of the fixing block (16), and the external threaded portion (17) is threadedly connected to the inside of the internal threaded groove (15).

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