Bolt structure for subway segment

Abstract

The utility model relates to the technical field of bolts, and provides a bolt structure for a subway segment, which comprises a bolt bar and a nut, the nut is screwed and connected to the lower end of the bolt bar, a locking component is arranged between the bolt bar and the nut, an anti-loosening component is arranged at the upper end of the bolt bar, and the locking component comprises a first thread groove. The first threaded groove is formed in the lower end of the bolt rod, a pair of inserting holes are formed in the lower end of the bolt rod, a connecting frame is connected into the inserting holes in an inserted mode, a limiting groove is formed in the bottom face of the nut, a groove is formed in the lower end face of the connecting frame and is of a through structure, the groove and the first threaded groove are located at the same axis position, and a locking screw is connected into the first threaded groove in a screwed mode. According to the technical scheme, the problems that in the prior art, in the using process of an existing duct piece bolt, due to the fact that the connecting position of a screw and a nut rusts, the existing duct piece bolt is prone to being stuck and not easy to disassemble, and due to the fact that the nut shakes easily due to vibration, connection of the connecting position is loosened are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, specifically, relate to a bolt structure for subway segment. BACKGROUND

[0002] In the subway tunnel construction, a kind of equipment from the machine called shield machine that is engaged in launching and tunneling, with the functions such as excavation cutting soil, conveying earth, assembling tunnel lining etc.;But shield machine is assembled by several segments when tunnel lining, there is a screw connection fastening effect, and assembled to form the pipeline of cylindrical column, segment is the wall of cylindrical column;Excavation can effectively control ground subsidence, reduce the influence on ground buildings and do not affect water surface traffic when underwater excavation etc., combine each segment together, form pipeline, this design is a linear or certain arc fastening connector, that is segment bolt.

[0003] But the segment bolt in the prior art is prone to rusting at the connecting position of screw rod and nut, which leads to jamming and is not easy to disassemble, and the nut is prone to shaking due to vibration, which leads to loose connection at the connecting position.

[0004] Therefore, the above problems are improved. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a bolt structure for subway segment, solve the problem that the segment bolt in the prior art is prone to rusting at the connecting position of screw rod and nut, which leads to jamming and is not easy to disassemble, and the nut is prone to shaking due to vibration, which leads to loose connection at the connecting position.

[0006] The technical scheme of the utility model is as follows: including

[0007] Screw rod and nut, the nut is screwed and connected at the lower end of the screw rod;

[0008] Locking assembly, the locking assembly is arranged between the screw rod and the nut;

[0009] Anti-loosening assembly, the anti-loosening assembly is arranged at the upper end of the screw rod;

[0010] The locking assembly includes a first threaded groove, the first threaded groove is opened in the lower end of the screw rod, the lower end of the screw rod is provided with a pair of insertion holes, the insertion holes are connected with a connecting frame, and the bottom surface of the nut is provided with a limiting groove.

[0011] As a further technical scheme, the lower end surface of the connecting frame is provided with a groove, the groove is a through structure, the groove and the first threaded groove are located at the same axial position, and the first threaded groove is screwed with a locking screw.

[0012] As a further technical scheme, the connecting frame is bent upwards at both ends, a connecting block is arranged at the upper end of the bent part of the connecting frame, a limiting inner frame is arranged on the connecting block, and the limiting inner frame is inserted into the limiting groove.

[0013] As a further technical scheme, the anti-loosening assembly comprises a circular groove, a second threaded groove is arranged in the circular groove, and a plurality of through holes are arranged on the inner bottom surface of the circular groove.

[0014] As a further technical scheme, the anti-skid frame is inserted into the through hole, the anti-skid frame is attached to the inner wall of the circular groove, a center hole is arranged on the surface of the anti-skid frame, and a compression screw is screwed into the second threaded groove.

[0015] As a further technical scheme, the inner surface of the limiting groove and the outer surface of the limiting inner frame are arc-shaped and protruding tooth-shaped structure surfaces.

[0016] As a further technical scheme, the first threaded groove is opposite to the threaded direction of the surface of the bolt rod.

[0017] As a further technical scheme, the lower end surface of the anti-skid frame is an anti-skid structure surface.

[0018] As a further technical scheme, the lower end surface of the locking screw is a concave hexagonal structure.

[0019] The working principle and beneficial effects of the utility model are as follows:

[0020] 1. The locking assembly is arranged in the utility model, the nut and the bolt rod are connected together through the interaction of the first threaded groove, the jack, the connecting frame, the limiting groove, the groove, the locking screw and the limiting inner frame, the nut cannot be rotated counterclockwise after being fixed, the nut cannot be loosened, and the utility model has good firmness.

[0021] 2. The anti-loosening assembly is arranged in the utility model, the anti-skid frame is inserted into the nut of the bolt rod through the interaction of the circular groove, the second threaded groove, the through hole, the anti-skid frame and the compression screw, the anti-skid frame is closely attached to the surface of the pipe piece, and the loosening effect is further improved. DRAWINGS

[0022] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0023] Figure 1 The utility model is a structural schematic view;

[0024] Figure 2 The utility model is an axonometric view;

[0025] Figure 3 It is a shaft measurement sectional view of the utility model;

[0026] Figure 4 It is a shaft measurement sectional view of the utility model; Figure 3 It is a partial enlarged view of A part in the figure;

[0027] In the figure: 1, bolt rod;2, nut;3, locking assembly;3-1, first thread groove;3-2, jack;3-3, connecting frame;3-4, limiting groove;3-5, recess;3-6, locking screw;3-7, connecting block;3-8, limiting inner frame;4, anti-loosening assembly;4-1, circular groove;4-2, second thread groove;4-3, perforation;4-4, anti-skid frame;4-5, center hole;4-6, compression screw. Specific implementation

[0028] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model.

[0029] As shown in the figure, the bolt structure for the subway segment is provided in the embodiment, which comprises Figures 1-4

[0030] Bolt rod 1 and nut 2, nut 2 is screwed and connected at the lower end of bolt rod 1;

[0031] Locking assembly 3, locking assembly 3 is arranged between bolt rod 1 and nut 2;

[0032] Anti-loosening assembly 4, anti-loosening assembly 4 is arranged at the upper end of bolt rod 1;

[0033] Locking assembly 3 includes first thread groove 3-1, first thread groove 3-1 is opened at the lower end of bolt rod 1, a pair of jacks 3-2 are opened at the lower end of bolt rod 1, connecting frame 3-3 is inserted and connected in jacks 3-2, limiting groove 3-4 is opened in the bottom surface of nut 2, recess 3-5 is opened in the lower end surface of connecting frame 3-3, recess 3-5 is through structure, recess 3-5 and first thread groove 3-1 are located at the same axial position, locking screw 3-6 is screwed and connected in first thread groove 3-1, both ends of connecting frame 3-3 are upwardly bent, connecting block 3-7 is arranged at the upper end of the bent part of connecting frame 3-3, limiting inner frame 3-8 is arranged on connecting block 3-7, limiting inner frame 3-8 is inserted in limiting groove 3-4.

[0034] ​In the embodiment, in order to realize the effect of firmly fixing the nut 2 and the bolt rod 1, the locking assembly 3 is designed, the first threaded groove 3-1 and the two insertion holes 3-2 are arranged at the lower end of the bolt rod 1, the connecting frame 3-3 is inserted into the insertion hole 3-2, the two ends of the connecting frame 3-3 are upwardly bent, the lower end surface of the nut 2 is provided with the limiting groove 3-4, the two ends of the connecting frame 3-3 are provided with the limiting inner frame 3-8, the limiting inner frame 3-8 can be inserted into the limiting groove 3-4, the nut 2 can be fixed, the recess 3-5 is arranged at the bottom of the connecting frame 3-3, the locking screw 3-6 is screwed into the first threaded groove 3-1 in the recess 3-5, the connecting frame 3-3 and the bolt rod 1 can be fixed, and the limiting inner frame 3-8 is fixed in close contact with the limiting groove 3-4.

[0035] Further, the anti-loosening assembly 4 comprises the circular groove 4-1, the second threaded groove 4-2 is arranged in the circular groove 4-1, a plurality of through holes 4-3 are arranged on the inner bottom surface of the circular groove 4-1, the anti-skid frame 4-4 is inserted into the through hole 4-3, the anti-skid frame 4-4 is attached to the inner wall of the circular groove 4-1, the central hole 4-5 is arranged on the surface of the anti-skid frame 4-4, and the compression screw 4-6 is screwed into the second threaded groove 4-2.

[0036] In the embodiment, in order to realize the anti-skid effect of the nut part of the bolt rod 1, the loosening assembly is designed, the circular groove 4-1 is arranged on the surface of the nut at the upper end of the bolt rod 1, the second threaded groove 4-2 and the plurality of through holes 4-3 are arranged in the circular groove 4-1, the anti-skid frame 4-4 is arranged in the circular groove 4-1 and passes through the through hole 4-3, the central hole 4-5 is arranged on the surface of the anti-skid frame 4-4, the compression screw 4-6 is inserted into the central hole 4-5 and is screwed into the second threaded groove 4-2, and the anti-skid frame 4-4 can be closely attached to the surface of the fixing structure, thereby having the loosening effect.

[0037] Further, the inner surface of the limiting groove 3-4 and the outer surface of the limiting inner frame 3-8 are arc-shaped and protruding tooth-shaped structure surfaces.

[0038] In the embodiment, the arc-shaped transition tooth-shaped structure surface has large density and low deviation, and the limiting inner frame 3-8 and the limiting groove 3-4 are conveniently connected.

[0039] Further, the first threaded groove 3-1 is opposite to the threaded direction of the surface of the bolt rod 1.

[0040] In the embodiment, the opposite threaded direction makes the bolt rod 1 and the locking screw 3-6 unable to rotate in the same direction, thereby increasing the loosening effect.

[0041] Further, the lower end surface of the anti-skid frame 4-4 is an anti-skid structure surface.

[0042] In the embodiment, the anti-skid structure surface makes the surface friction between the anti-skid frame 4-4 and the pipe piece fixing position larger, so that the anti-skid frame 4-4 is not easy to loosen.

[0043] Further, the lower end surface of the locking screw 3-6 is a concave hexagonal structure.

[0044] In the embodiment, the concave hexagonal structure makes the lower end of the locking screw 3-6 not protrude outward, so that the connection position is not hindered.

[0045] When installation is needed, the bolt rod 1 is inserted into the pipe piece, the connecting nut 2 is screwed at the bottom, after being screwed, the connecting frame 3-3 is first inserted into the insertion hole 3-2 at the bottom, the limiting inner frame 3-8 is inserted into the limiting groove 3-4, the locking screw is screwed into the first threaded groove 3-1, the connecting frame 3-3 is fixed, then the anti-skid frame 4-4 is inserted into the perforation 4-3 in the circular groove 4-1, the pressing screw 4-6 is screwed into the second threaded groove 4-2, and the pressure on the anti-skid frame 4-4 is increased downward, so that the anti-skid frame 4-4 is tightly attached to the surface of the pipe piece, and the relaxation effect is achieved.

[0046] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A bolt structure for a subway segment, characterized by, Comprising A bolt rod (1) and a nut (2) screwed and connected at the lower end of the bolt rod (1); A locking assembly (3) arranged between the bolt rod (1) and the nut (2); A anti-loose assembly (4) arranged at the upper end of the bolt rod (1); The locking assembly (3) comprises a first threaded groove (3-1) arranged at the lower end of the bolt rod (1), a pair of insertion holes (3-2) arranged at the lower end of the bolt rod (1), a connecting frame (3-3) inserted and connected in the insertion holes (3-2), and a limiting groove (3-4) arranged at the bottom surface of the nut (2).

2. The bolt structure for a subway segment according to claim 1, wherein The lower end surface of the connecting frame (3-3) is provided with a groove (3-5), which is a through structure, and the groove (3-5) and the first threaded groove (3-1) are located at the same axial position, and the first threaded groove (3-1) is screwed and connected with a locking screw (3-6).

3. The bolt structure for a subway segment according to claim 2, wherein Both ends of the connecting frame (3-3) are upwardly bent, and the connecting frame (3-3) is provided with a connecting block (3-7) at the upper end of the bent part, and a limiting inner frame (3-8) is arranged on the connecting block (3-7), and the limiting inner frame (3-8) is inserted into the limiting groove (3-4).

4. The bolt structure for a subway segment according to claim 1, wherein The anti-loose assembly (4) comprises a circular groove (4-1) arranged at the top of the bolt rod (1), a second threaded groove (4-2) arranged in the circular groove (4-1), and a plurality of perforations (4-3) arranged around the inner bottom surface of the circular groove (4-1).

5. The bolt structure for a subway segment according to claim 4, wherein The perforations (4-3) are inserted and connected with an anti-skid frame (4-4), the anti-skid frame (4-4) is attached to the inner wall of the circular groove (4-1), the surface of the anti-skid frame (4-4) is provided with a center hole (4-5), and the second threaded groove (4-2) is screwed and connected with a compression screw (4-6).

6. The bolt structure for a subway segment according to claim 3, wherein The inner surface of the limiting groove (3-4) and the outer surface of the limiting inner frame (3-8) are both arc-shaped convex tooth-shaped structure surfaces.

7. The bolt structure for a subway segment according to claim 1, wherein The first threaded groove (3-1) and the surface of the bolt rod (1) are opposite in screw thread direction.

8. The bolt structure for a subway segment according to claim 5, wherein The lower end surface of the anti-skid frame (4-4) is a non-slip structure surface.

9. The bolt structure for a subway segment according to claim 2, wherein The lower end surface of the locking screw (3-6) is a concave hexagonal structure.

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