Length-adjustable duct piece bolt

Abstract

The length-adjustable segment bolt comprises a first bolt rod and a second bolt rod, a connecting column is arranged at one end of the first bolt rod, an inserting hole matched with the connecting column is formed in one end of the second bolt rod in the length direction of the second bolt rod, and the connecting column is connected with the inserting hole in a sliding mode. The end, away from the first bolt rod, of the connecting column is fixedly connected with an adjusting assembly used for adjusting the position of the connecting column in the inserting hole. Threaded sections are arranged at the ends, away from each other, of the first bolt rod and the second bolt rod, nuts are connected to the threaded sections in a threaded mode, gaskets are connected to the outer walls, on the inner sides of the nuts, of the first bolt rod and the second bolt rod in a sleeving mode, and limiting assemblies are connected to the first bolt rod and the second bolt rod on the outer sides of the nuts in a sleeving mode. The limiting assembly is used for limiting axial movement of the nut. The length of the segment bolt can be adjusted, the overall strength and stability of the segment bolt are kept, and meanwhile the nut can be prevented from loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of segment bolts, in particular to a segment bolt with adjustable length. Background Art

[0002] In subway tunnel construction, there is a machine engaged in excavation called a shield machine, which has the functions of excavating and cutting soil, transporting soil and assembling tunnel linings, etc.; but when the shield machine is lining the tunnel, it is assembled with several segments. There is a kind of screw that serves as a connection and fastening function to assemble into a cylindrical pipe, and the segment is the cylindrical wall; during excavation, it can effectively control ground settlement, reduce the impact on ground buildings, and does not affect surface traffic during underwater excavation. The segments are combined together to form a pipeline. This fastening connector designed to be a straight line or with a certain arc is the segment bolt.

[0003] The length of existing segment bolts is generally fixed. When in use, the segment bolts are often too long or too short, which is not suitable for installation and may cause the equipment to be installed loosely. The utility model patent with application number 202222609321.4 discloses a subway segment bolt with adjustable length. In the utility model, the segment bolt length can be adjusted by engaging the clamping block 2 on the mounting block 1 with different grooves on the mounting block 2.

[0004] However, in the above patent, the two bolts 1 are connected only by the engagement of the clamp block 2 with the groove, and no limit assembly is provided to limit the connection of the two bolts 1 after engagement. The clamp block 2 is easy to slip out of the groove, causing the two bolts 1 to be disconnected, thereby affecting the overall strength and stability of the segment bolts. In addition, during the use of the segment bolts, the nuts are easy to shake due to vibration, causing the connection to loosen.

[0005] Therefore, it is necessary to develop a segment bolt with adjustable length to address the above defects. Utility Model Content

[0006] The utility model aims to provide a length-adjustable segment bolt, which can adjust the length of the segment bolt, maintain the overall strength and stability of the segment bolt, and prevent the nut from loosening.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a length-adjustable segment bolt, comprising a first bolt rod and a second bolt rod, wherein a connecting column is arranged at one end of the first bolt rod, and a socket adapted to the connecting column is opened at one end of the second bolt rod along its length direction, and the connecting column is slidably connected to the socket; an end of the connecting column away from the first bolt rod is fixedly connected to an adjusting component, and the adjusting component is used to adjust the position of the connecting column in the socket; a threaded section is opened at one end of the first bolt rod and the second bolt rod away from each other, and nuts are threadedly connected to the threaded sections, gaskets are sleeved on the outer walls of the first bolt rod and the second bolt rod on the inner side of the nut, and a limiting component is sleeved on the first bolt rod and the second bolt rod on the outer side of the nut, and the limiting component is used to limit the axial movement of the nut.

[0009] Furthermore, the connecting column is a rectangular parallelepiped, and the connecting column and the first bolt rod are integrally formed.

[0010] Furthermore, the adjustment assembly includes a telescopic rod, a mounting groove is provided on the side wall of the connecting column away from one end of the first bolt rod, one end of the telescopic rod is fixedly connected to the bottom surface of the mounting groove; the other end of the telescopic rod is fixedly connected to a clamp, a first spring is sleeved on the outer wall of the telescopic rod, and two ends of the first spring are respectively fixedly connected to the bottom surface of the mounting groove and the side wall of the clamp; the second bolt rod is provided with a plurality of clamping holes evenly distributed along its length and cooperating with the clamp.

[0011] Furthermore, the limit assembly includes an installation box, an outer wall of the installation box is in contact with the side wall of the nut, the installation box is hollow inside and the two inner walls are coaxially fixedly connected with sliding rods; the two ends of the bottom surface of the installation box are respectively fixedly connected to the mounting platform, and the top surface of the mounting platform is respectively slidably connected to the connecting block, and the side wall of the connecting block is provided with a sliding hole that cooperates with the sliding rod; the outer wall of the sliding rod is sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to the installation box and the side wall of the connecting block; one end of the connecting block away from the sliding hole is fixedly connected to the limiting column, and the first bolt rod and the second bolt rod are both provided with limiting holes that cooperate with the limiting column; the connecting block is connected to a driving member for driving the two connecting blocks to move in opposite directions on the sliding rod.

[0012] Furthermore, the driving member includes two L-shaped connecting rods, which are symmetrically arranged at both ends of the inner wall of the installation box and rotatably connected to the inner wall of the installation box. A first transmission column is fixedly connected to the side wall of the connecting block, and one end of the L-shaped connecting rod is provided with a first transmission hole that cooperates with the first transmission column; two pull rods are arranged at both ends of the top surface of the installation box, and the top ends of the two pull rods pass through the top wall of the installation box and extend into the inner cavity of the installation box, and the side wall of the bottom end of the pull rod is fixedly connected with a second transmission column, and the other end of the L-shaped connecting rod is provided with a second transmission hole that cooperates with the second transmission column.

[0013] Furthermore, an arc-shaped pull plate is fixedly connected between the top ends of the two pull rods.

[0014] Furthermore, a shield is fixedly connected to the outer wall of the installation box at one end close to the nut, and the shield abuts against the side wall of the gasket at one end away from the installation box. A sealing ring is provided at the connection between the shield and the gasket.

[0015] Compared with the prior art, the beneficial technical effects of the utility model are:

[0016] The utility model controls the overall length of the segment bolt by inserting the length of the connecting column of the first bolt rod into the insertion hole of the second bolt rod. By adjusting the buckle of the component to cooperate with the clamping hole, the position of the connecting column in the insertion hole can be locked, thereby maintaining the overall strength and stability of the segment bolt. Through the limit assembly, the axial movement of the nut can be limited to prevent the nut from loosening due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the length-adjustable segment bolt of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the first bolt rod of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the second bolt rod of the utility model;

[0021] Figure 4 for Figure 2 A partial enlarged view of part A in the middle;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the limiting component of the utility model;

[0023] Figure 6 A cross-sectional view of the position limiting assembly of the utility model from another perspective;

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the connecting block of the utility model.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. first bolt rod; 2. second bolt rod; 3. connecting column; 4. socket; 5. adjustment assembly; 501. telescopic rod; 502. mounting groove; 503. clamping head; 504. first spring; 505. clamping hole; 6. nut; 7. gasket; 8. limiting assembly; 801. mounting box; 802. sliding rod; 803. mounting table; 804. connecting block; 805. sliding hole; 806. second spring; 807. limiting column; 808. limiting hole; 809. L-shaped connecting rod; 810. first transmission column; 811. first transmission hole; 812. pull rod; 813. second transmission column; 814. second transmission hole; 815. pull plate; 9. shield; 10. sealing ring. DETAILED DESCRIPTION

[0026] The core of the utility model is to provide a length-adjustable segment bolt, which can adjust the length of the segment bolt, maintain the overall strength and stability of the segment bolt, and prevent the nut from loosening.

[0027] The following will be combined with the drawings in 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 in 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.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In a specific embodiment, Figures 1 to 3As shown, a length-adjustable segment bolt comprises a first bolt rod 1 and a second bolt rod 2, a connecting column 3 is provided at one end of the first bolt rod 1, a socket 4 adapted to the connecting column 3 is provided at one end of the second bolt rod 2 along its length direction, and the connecting column 3 is slidably connected to the socket 4; an adjusting component 5 is fixedly connected to the end of the connecting column 3 away from the first bolt rod 1, and the adjusting component 5 is used to adjust the position of the connecting column 3 in the socket 4; a threaded section is provided at the ends of the first bolt rod 1 and the second bolt rod 2 away from each other, and a nut 6 is threadedly connected to the threaded section, and a gasket 7 is sleeved on the outer wall of the first bolt rod 1 and the second bolt rod 2 inside the nut 6, and a limiting component 8 is sleeved on the first bolt rod 1 and the second bolt rod 2 outside the nut 6, and the limiting component 8 is used to limit the axial movement of the nut 6.

[0030] The overall length of the segment bolt is controlled by the length of the connecting column 3 of the first bolt rod 1 inserted into the insertion hole 4 of the second bolt rod 2. The position of the connecting column 3 in the insertion hole 4 can be locked by adjusting the component 5, thereby maintaining the overall strength and stability of the segment bolt. The axial movement of the nut 6 can be limited by the limiting component 8 to prevent the nut 6 from loosening due to vibration.

[0031] In a specific embodiment, Figure 2 As shown, the connecting column 3 is a rectangular parallelepiped, which can prevent the connecting column 3 from radially rotating in the insertion hole 4. The connecting column 3 and the first bolt rod 1 are integrally formed, which can enhance the connection strength between the connecting column 3 and the first bolt rod 1, and at the same time can improve the connection strength between the first bolt rod 1 and the second bolt rod 2.

[0032] In a specific embodiment, Figures 2 to 4 As shown, the adjustment assembly 5 includes a telescopic rod 501, a mounting groove 502 is provided on the side wall of the connecting column 3 away from the end of the first bolt rod 1, and one end of the telescopic rod 501 is fixedly connected to the bottom surface of the mounting groove 502; the other end of the telescopic rod 501 is fixedly connected to a clamping head 503, and a first spring 504 is sleeved on the outer wall of the telescopic rod 501, and the two ends of the first spring 504 are respectively fixedly connected to the bottom surface of the mounting groove 502 and the side wall of the clamping head 503; the second bolt rod 2 is provided with a plurality of clamping holes 505 evenly distributed along its length and cooperating with the clamping head 503.

[0033] By moving the connecting column 3 in the socket 4, the clamping head 503 of the connecting column 3 can be engaged in different clamping holes 505 through the action of the first spring 504 and the telescopic rod 501, thereby achieving the length adjustment of the pipe segment bolt and the fixing of the position of the connecting column 3.

[0034] In a specific embodiment, Figures 5 to 7As shown, the limiting assembly 8 includes a mounting box 801, an outer wall of the mounting box 801 is in contact with the side wall of the nut 6, the mounting box 801 is hollow inside and the two inner walls are coaxially fixedly connected with sliding rods 802; the two ends of the bottom surface of the mounting box 801 are respectively fixedly connected with mounting platforms 803, and the top surfaces of the mounting platforms 803 are respectively slidably connected with connecting blocks 804, and the side walls of the connecting blocks 804 are provided with sliding holes 805 that cooperate with the sliding rods 802; the outer wall of the sliding rod 802 is sleeved with a second spring 806, and the two ends of the second spring 806 are respectively fixedly connected to the mounting box 801 and the side walls of the connecting block 804; one end of the connecting block 804 away from the sliding hole 805 is fixedly connected to a limiting column 807, and the first bolt rod 1 and the second bolt rod 2 are both provided with limiting holes 808 that cooperate with the limiting column 807; the connecting block 804 is connected with a driving member for driving the two connecting blocks 804 to move in opposite directions on the sliding rod 802.

[0035] The side wall of the installation box 801 is in contact with the nut 6 to limit and fix the axial position of the nut 6. Through the action of the second spring 806, the limiting columns 807 on the two connecting blocks 804 are inserted from both sides into the limiting holes 808 on the first bolt rod 1 and the second bolt rod 2, thereby fixing the position of the installation box 801 and indirectly fixing the position of the nut 6 to prevent the nut 6 from loosening.

[0036] Specifically, the driving member includes two L-shaped connecting rods 809, which are symmetrically arranged at both ends of the inner wall of the installation box 801 and rotatably connected to the inner wall of the installation box 801. A first transmission column 810 is fixedly connected to the side wall of the connecting block 804, and a first transmission hole 811 that cooperates with the first transmission column 810 is opened at one end of the L-shaped connecting rod 809; two pull rods 812 are arranged at both ends of the top surface of the installation box 801, and the top ends of the two pull rods 812 pass through the top wall of the installation box 801 and extend into the inner cavity of the installation box 801, and the second transmission column 813 is fixedly connected to the side wall of the bottom end of the pull rod 812, and a second transmission hole 814 that cooperates with the second transmission column 813 is opened at the other end of the L-shaped connecting rod 809.

[0037] By pulling the two pull rods 812 upward, the L-shaped connecting rod 809 is driven to rotate, and the connecting block 804 is further driven to slide on the sliding rod 802, so that the limiting column 807 is withdrawn from the limiting hole 808, which facilitates the removal and disassembly of the installation box 801 and the nut 6.

[0038] Specifically, an arc-shaped pull plate 815 is fixedly connected between the top ends of the two pull rods 812, so that the staff can control the two pull rods 812 at the same time by pulling the pull plate 815.

[0039] Specifically, a protective cover 9 is fixedly connected to the outer wall of the installation box 801 near the nut 6, and the protective cover 9 abuts against the side wall of the gasket 7 at the end away from the installation box 801, which can protect the nut 6. A sealing ring 10 is provided at the connection between the protective cover 9 and the gasket 7 to improve the sealing of the protective cover 9 and prevent dust and moisture from corroding the nut 6.

[0040] Working principle of the utility model: When the length-adjustable segment bolt of the utility model is used, first, according to the installation requirements, the first bolt rod 1 is slid to move the connecting column 3 in the insertion hole 4, and the segment bolt is adjusted to the required length. Then, the clamp head 503 is clamped into the clamp hole 505 at the corresponding position on the second bolt rod 2 under the action of the first spring 504, and the relative position of the first bolt rod 1 and the second bolt rod 2 is locked, so that the segment bolt is kept at the required length. The gasket 7 is respectively sleeved on the first bolt rod 1 and the second bolt rod 2 to increase the tightening effect, and then the nut 6 is respectively screwed on the threaded section of the first bolt rod 1 and the second bolt rod 2, and the installation box 801 is respectively sleeved on the first bolt rod 1 and the second bolt rod 2. Through the action of the second spring 806, the limiting column 807 is respectively inserted into the limiting hole 808 of the first bolt rod 1 and the second bolt rod 2 from both sides to limit the axial movement of the nut 6 and prevent the nut 6 from loosening.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A length-adjustable segment bolt, characterized in that: The invention comprises a first bolt rod (1) and a second bolt rod (2), wherein a connecting column (3) is arranged at one end of the first bolt rod (1), and a plug hole (4) adapted to the connecting column (3) is provided at one end of the second bolt rod (2) along its length direction, and the connecting column (3) is slidably connected to the plug hole (4); an adjusting component (5) is fixedly connected to the end of the connecting column (3) away from the first bolt rod (1), and the adjusting component (5) is used to adjust the position of the connecting column (3) in the plug hole (4); a threaded section is arranged at the ends of the first bolt rod (1) and the second bolt rod (2) away from each other, and a nut (6) is threadedly connected to the threaded section, and a gasket (7) is sleeved on the outer wall of the first bolt rod (1) and the second bolt rod (2) on the inner side of the nut (6), and a limiting component (8) is sleeved on the first bolt rod (1) and the second bolt rod (2) on the outer side of the nut (6), and the limiting component (8) is used to limit the axial movement of the nut (6).

2. The length-adjustable segment bolt according to claim 1, characterized in that: The connecting column (3) is a rectangular parallelepiped, and the connecting column (3) and the first bolt rod (1) are integrally formed.

3. The length-adjustable segment bolt according to claim 1, characterized in that: The adjustment assembly (5) comprises a telescopic rod (501), a mounting groove (502) is provided on the side wall of the connecting column (3) away from one end of the first bolt rod (1), one end of the telescopic rod (501) is fixedly connected to the bottom surface of the mounting groove (502); the other end of the telescopic rod (501) is fixedly connected to a clamping head (503), a first spring (504) is sleeved on the outer wall of the telescopic rod (501), and the two ends of the first spring (504) are respectively fixedly connected to the bottom surface of the mounting groove (502) and the side wall of the clamping head (503); the second bolt rod (2) is provided with a plurality of clamping holes (505) evenly distributed along its length and cooperating with the clamping head (503).

4. The length-adjustable segment bolt according to claim 1, characterized in that: The limiting assembly (8) comprises a mounting box (801), an outer wall of the mounting box (801) abuts against the side wall of the nut (6), the mounting box (801) is hollow inside and two inner walls are coaxially fixedly connected with sliding rods (802); the two ends of the bottom surface of the mounting box (801) are respectively fixedly connected with mounting platforms (803), the top surface of the mounting platform (803) is slidably connected with a connecting block (804), and the side wall of the connecting block (804) is provided with a sliding hole (805) that cooperates with the sliding rod (802); the outer wall of the sliding rod (802) is sleeved with A second spring (806), the two ends of the second spring (806) are respectively fixedly connected to the side walls of the installation box (801) and the connecting block (804); one end of the connecting block (804) away from the sliding hole (805) is fixedly connected to a limiting column (807), and the first bolt rod (1) and the second bolt rod (2) are both provided with limiting holes (808) that cooperate with the limiting column (807); the connecting block (804) is connected with a driving member for driving the two connecting blocks (804) to move in opposite directions on the sliding rod (802).

5. The length-adjustable segment bolt according to claim 4, characterized in that: The driving member comprises two L-shaped connecting rods (809), which are symmetrically arranged at the two ends of the inner wall of the installation box (801) and are rotatably connected to the inner wall of the installation box (801); a first transmission column (810) is fixedly connected to the side wall of the connecting block (804); one end of the L-shaped connecting rod (809) is provided with a first transmission hole (811) that cooperates with the first transmission column (810); two pull rods (812) are arranged at both ends of the top surface of the installation box (801); the top ends of the two pull rods (812) pass through the top wall of the installation box (801) and extend into the inner cavity of the installation box (801); the bottom end side wall of the pull rod (812) is fixedly connected to the second transmission column (813); the other end of the L-shaped connecting rod (809) is provided with a second transmission hole (814) that cooperates with the second transmission column (813).

6. The length-adjustable segment bolt according to claim 5, characterized in that: An arc-shaped pulling plate (815) is fixedly connected between the top ends of the two pulling rods (812).

7. The length-adjustable segment bolt according to claim 4, characterized in that: A shield (9) is fixedly connected to the outer wall of the installation box (801) at one end close to the nut (6), and the shield (9) abuts against the side wall of the gasket (7) at one end away from the installation box (801). A sealing ring (10) is provided at the connection between the shield (9) and the gasket (7).

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