Bolt connection structure for subway segment installation

Abstract

The utility model relates to the technical field of subway tunnels, and discloses a bolt connecting structure for installing subway segments, which comprises an inserting rod, a plurality of groups of evenly distributed ejection grooves are arranged in the inner wall of the inserting rod, expansion sheets are fixedly connected in the ejection grooves, anti-skidding teeth are fixedly connected on the outer walls of the expansion sheets, and pressed blocks are fixedly connected on the inner walls of the expansion sheets. A stress slope is arranged on the inner side of the pressed block, an ejection block is slidably connected into the insertion rod, a stress application slope is arranged on the outer wall of the ejection block and matched with the stress slope, a connecting rod is fixedly connected to the ejection block, and a telescopic driving assembly used for driving the connecting rod to stretch out and draw back is connected to the connecting rod. The insertion rod is fixedly installed on the inner wall of a tunnel through mutual cooperation of the expansion pieces and the anti-skid teeth, and then pipe pieces are clamped and connected through the clamping pieces in the clamping assemblies, so that the clamping capacity of the structure on the pipe pieces is improved, and the stability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway tunnels, in particular to a bolt connection structure for installing subway pipe segments. Background Art

[0002] Subways are an important means to alleviate urban traffic congestion. Generally, subway tunnels are composed of 6 arc-shaped high-strength cement blocks weighing several tons, which are spliced ​​into a ring. Each cement block is fixed by subway segment connecting bolts. However, after the tunnel is formed, some segment bolts will be exposed to the air. In addition, the tunnel is humid all year round, so it is necessary to add bolt protection covers on the outside as a protective structure to isolate the humid air from corrosion and oxidation of the bolts and increase the service life of the bolts.

[0003] At present, there are many specifications of subway segment bolts. In order to adapt to various specifications, the general bolt protection cover is generally designed according to the larger size, and only the bolt protection cover can cover the exposed part of the bolt in the bolt hand hole. The existing bolt protection cover and the exposed part of the bolt to be protected are not effective enough. It is necessary to add colloid to enhance the firmness of the bite. However, with the increase of years, the viscosity of the colloid decreases, and the bolt protection structure is prone to fall off. The bolt protection cover is set at the top of the subway tunnel. If the bolt protection cover is not firm enough, it will fall off, causing the subway vehicle and the falling object to collide. Utility Model Content

[0004] The utility model aims to provide a bolt connection structure for installing subway segments, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bolt connection structure for installing subway pipe segments comprises an insertion rod, wherein the inner wall of the insertion rod is provided with a plurality of groups of evenly distributed ejection grooves, an expansion sheet is fixedly connected in the ejection groove, an anti-skid tooth is fixedly connected on the outer wall of the expansion sheet, a pressure block is fixedly connected on the inner wall of the expansion sheet, a force slope is arranged on the inner side of the pressure block, an ejection block is slidably connected in the insertion rod, a force slope is arranged on the outer wall of the ejection block, the force slope cooperates with the force slope, a connecting rod is fixedly connected to the ejection block, a telescopic driving assembly for driving the connecting rod to telescope is connected to the connecting rod, and a clamping assembly for clamping and fixing the pipe segment is connected to the insertion rod.

[0007] As a further solution of the utility model: the telescopic drive assembly includes an internal thread arranged in the inner wall of the insertion rod, the internal thread is connected with a thread rotating head, and the thread rotating head is rotatably connected to the connecting rod.

[0008] As a further solution of the utility model: a hexagonal screw head is fixedly connected to the threaded rotating head.

[0009] As a further solution of the utility model: the clamping assembly includes a fixing block fixedly connected to both sides of the insertion rod, a screw rod is fixedly connected to the fixing block, and a nut is threadedly connected to the screw rod.

[0010] As a further solution of the utility model: a clamping plate is arranged between the fixing block and the nut, a mounting groove is arranged in the clamping plate, the mounting groove is slidably connected to the screw rod, and a bite tooth is fixedly connected to the clamping plate.

[0011] As a further solution of the utility model: a clip is fixedly connected to the nut.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention firstly fixes the inserted rod to the inner wall of the tunnel through the cooperation between the expansion plate and the anti-slip teeth, and then clamps and connects the pipe segment through the setting of the clamping plate in the clamping assembly, thereby improving the clamping ability of the structure on the pipe segment and improving the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic structural diagram of a bolt connection structure for installing subway pipe segments.

[0014] Figure 2 It is a cross-sectional view of a bolt connection structure for installing subway pipe segments in the utility model.

[0015] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0016] In the figure: 1-insertion rod, 2-fixing block, 3-screw, 4-clamp, 5-mounting groove, 6-biting tooth, 7-nut, 8-clamp, 9-ejection groove, 10-expansion plate, 11-anti-slip tooth, 12-internal thread, 13-thread rotating head, 14-hexagonal screw head, 15-connecting rod, 16-ejection block, 17-force ramp, 18-pressure block, 19-force ramp. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1 to Figure 3In the embodiment of the utility model, a bolt connection structure for installing a subway pipe segment includes a plug rod 1, a plurality of groups of evenly distributed ejection grooves 9 are arranged in the inner wall of the plug rod 1, an expansion piece 10 is fixedly connected in the ejection groove 9, an anti-slip tooth 11 is fixedly connected on the outer wall of the expansion piece 10, a pressure block 18 is fixedly connected on the inner wall of the expansion piece 10, a force slope 19 is arranged on the inner side of the pressure block 18, an ejection block 16 is slidably connected in the plug rod 1, a force slope 17 is arranged on the outer wall of the ejection block 16, the force slope 17 cooperates with the force slope 19, a connecting rod 15 is fixedly connected to the ejection block 16, a telescopic driving component for driving the connecting rod 15 to telescope is connected to the plug rod 1, and a telescopic driving component for driving the connecting rod 15 to telescope is connected to the plug rod 1 The utility model first drills a mounting hole on the inner wall of the tunnel, and then inserts the plug rod 1 into the mounting hole, and then drives the connecting rod 15 to slide and retract in the plug rod 1 through the telescopic drive component, and the connecting rod 15 drives the ejection block 16 to extend into the plug rod 1, and the ejection block 16 cooperates with the force slope 17 and the force slope 19 to drive the pressure block 18 to flip and extend out of the plug rod 1, and the pressure block 18 drives the expansion piece 10 to flip and extend out of the ejection groove 9, and the collision piece drives the anti-slip teeth 11 to clamp onto the inner wall of the mounting hole, so that the plug rod 1 is fastened and fixed to the mounting hole, and then the pipe segment is installed and fixed to the plug rod 1 through the clamping assembly, so as to realize the bolt connection and fixation of the subway pipe segment.

[0019] In one case of this embodiment, see Figure 1 to Figure 3 The telescopic drive assembly includes an internal thread 12 arranged in the inner wall of the insertion rod 1, and the internal thread 12 is connected to a threaded rotating head 13, and the threaded rotating head 13 is rotatably connected to the connecting rod 15. A hexagonal screw head 14 is fixedly connected to the threaded rotating head 13. The telescopic drive assembly can be rotated by screwing the hexagonal screw head 14 with a wrench, and the hexagonal screw head 14 drives the threaded rotating head 13 to rotate. The threaded rotating head 13 drives the threaded rotating head 13 to rotate and telescope in the insertion rod 1 through the threaded connection with the internal thread 12, and the threaded rotating head 13 drives the connecting rod 15 to telescope in the insertion rod 1.

[0020] In one case of this embodiment, see Figure 1 to Figure 3The clamping assembly includes a fixing block 2 fixedly connected to both sides of the insertion rod 1, a screw rod 3 is fixedly connected to the fixing block 2, a nut 7 is threadedly connected to the screw rod 3, a clamping plate 4 is arranged between the fixing block 2 and the nut 7, a mounting groove 5 is arranged in the clamping plate 4, the mounting groove 5 is slidably connected to the screw rod 3, a biting tooth 6 is fixedly connected to the clamping plate 4, and a clamping piece 8 is fixedly connected to the nut 7. The clamping assembly first installs the pipe segment on the screw rod 3, and then installs and fixes the clamping plate 4 to the screw rod 3 through the mounting groove 5, so that the pipe segment is clamped by the clamping plate 4, and the clamping area of ​​the pipe segment is increased by the clamping plate 4, thereby improving the stability of the clamping of the pipe segment, and at the same time, the two sides of the pipe segment are bitten and fixed by the setting of the biting tooth 6, thereby improving the stability of the connection of the clamping plate 4 to the pipe segment.

[0021] The working principle of the utility model is as follows: the utility model firstly drills a mounting hole on the inner wall of the tunnel, and then inserts the insertion rod 1 into the mounting hole, and then rotates the hexagonal screw head 14 by a wrench, and the hexagonal screw head 14 drives the threaded rotating head 13 to rotate, and the threaded rotating head 13 drives the threaded rotating head 13 to rotate and retract in the insertion rod 1 through the threaded connection with the internal thread 12, and the threaded rotating head 13 drives the connecting rod 15 to retract in the insertion rod 1, and the connecting rod 15 drives the ejection block 16 to extend into the insertion rod 1, and the ejection block 16 cooperates with the force slope 17 and the force slope 19 to drive the pressure block 18 to the outside of the insertion rod 1 The pipe segment is then mounted on the screw rod 3, and the clamping plate 4 is then fixed to the screw rod 3 through the mounting groove 5, thereby clamping the pipe segment through the clamping plate 4, and increasing the clamping area of ​​the pipe segment through the clamping plate 4, thereby improving the clamping stability of the pipe segment, and at the same time, the two sides of the pipe segment are clamped and fixed through the setting of the biting teeth 6, thereby improving the stability of the connection between the clamping plate 4 and the pipe segment, thereby realizing the bolt connection and fixation of the subway pipe segment.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0023] The above description is only a preferred embodiment of the present invention and is 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 bolt connection structure for subway segment installation, comprising an insertion rod, characterized in that: A plurality of evenly distributed ejection grooves are arranged in the inner wall of the insertion rod, an expansion sheet is fixedly connected in the ejection groove, an anti-skid tooth is fixedly connected on the outer wall of the expansion sheet, a pressure block is fixedly connected on the inner wall of the expansion sheet, a force slope is arranged on the inner side of the pressure block, an ejection block is slidably connected in the insertion rod, a force slope is arranged on the outer wall of the ejection block, the force slope cooperates with the force slope, a connecting rod is fixedly connected to the ejection block, a telescopic driving assembly for driving the connecting rod to telescope is connected to the connecting rod, and a clamping assembly for clamping and fixing the pipe segment is connected to the insertion rod.

2. A bolt connection structure for subway segment installation according to claim 1, characterized in that: The telescopic driving assembly comprises an internal thread arranged in the inner wall of the insertion rod, the internal thread is connected with a thread rotating head, and the thread rotating head is rotatably connected with the connecting rod.

3. A bolt connection structure for subway segment installation according to claim 2, characterized in that: A hexagonal screw head is fixedly connected to the threaded rotating head.

4. The bolt connection structure for subway segment installation according to claim 1, characterized in that: The clamping assembly comprises a fixing block fixedly connected to both sides of the insertion rod, a screw rod is fixedly connected to the fixing block, and a nut is threadedly connected to the screw rod.

5. A bolt connection structure for subway segment installation according to claim 4, characterized in that: A clamping plate is arranged between the fixing block and the nut, a mounting groove is arranged in the clamping plate, the mounting groove is slidably connected to the screw rod, and a bite tooth is fixedly connected to the clamping plate.

6. The bolt connection structure for subway segment installation according to claim 4, characterized in that: A clip is fixedly connected to the nut.

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