Subway shield segment bolt protection device

Abstract

The utility model relates to the technical field of subway tunnels, and discloses a subway shield segment bolt protection device which comprises a screw rod, one end of the screw rod is fixedly connected with a screw head, the other end of the screw rod is in threaded connection with a nut, a fixing plate is arranged on the outer side of the screw head, a fixing cylinder is fixedly connected to the fixing plate, and a notch is formed in the fixing cylinder. The fixed cylinder is fixedly connected with a telescopic cylinder, the telescopic cylinder is slidably connected with a sliding cylinder, a telescopic groove is formed in the sliding cylinder, one end of the telescopic cylinder is fixedly connected with a sliding block, and the sliding block is slidably connected into the telescopic groove. The bolt protection structure is clamped and fixed through the telescopic cylinders and the sliding cylinders which are arranged in groups, so that the structure is prevented from falling off, meanwhile, cathode rust prevention is carried out on bolts through the zinc bars, and meanwhile, the drying blocks made of limestone absorb moisture in equipment, so that the oxidation rate of the equipment is reduced, and the service life of the equipment is prolonged. And the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of subway tunnels, in particular to a subway shield segment bolt protection device. Background Art

[0002] Conventional subway tunnels are made of six arc-shaped high-strength cement blocks weighing several tons, which are spliced ​​into a circle. Each cement block is fixed with bolts. After the tunnel is formed, the connecting bolts at 180° on the circle of the cave body will be exposed in the hand holes. Because the tunnel is humid all year round, a protective cover needs to be added on the outside to isolate the humid air from corroding and oxidizing the bolts.

[0003] At present, the specifications used in the subway segment bolt industry are M24, M27, M30, M32, and M36. In order to meet the installation needs, the actual design size of the protective covers on the market generally uses larger models. It only considers that the bolt protection cover can cover the exposed part of the bolt in the bolt hand hole, but does not consider that the segment bolts are divided into single-headed and double-headed. As a result, the bolt protection cover and the exposed part of the bolt to be protected are not effectively engaged. The bolt protection cover is used at the top of the subway tunnel. In the later period, the long-term operation of the subway vehicle will cause vibration to the hand-hole segment bolt protection cover. If the bolt protection cover is not strong enough, it will fall, causing the subway vehicle and the falling object to collide. Utility Model Content

[0004] The utility model aims to provide a subway shield segment bolt protection device to solve the problems raised in the above background technology.

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

[0006] A subway shield segment bolt protection device comprises a screw rod, one end of the screw rod is fixedly connected with a screw head, the other end of the screw rod is threadedly connected with a nut, a fixing plate is arranged on the outside of the screw head, a fixing cylinder is fixedly connected with the fixing plate, a notch is arranged in the fixing cylinder, the notch and the screw head cooperate with each other, a telescopic cylinder is fixedly connected to the fixing cylinder, a sliding cylinder is slidably connected to the telescopic cylinder, a telescopic groove is arranged in the sliding cylinder, one end of the telescopic cylinder is fixedly connected with a slider, the slider is slidably connected in the telescopic groove, a spring is arranged on the side of the slider away from the telescopic cylinder, a threaded mounting cylinder is fixedly connected to the sliding cylinder, a threaded sealing head is threadedly connected in the threaded mounting cylinder, and a water absorption and drying component for absorbing moisture on the outside of the screw rod is arranged in the threaded sealing head.

[0007] As a further solution of the utility model: a hexagonal head is fixedly connected to the threaded sealing head.

[0008] As a further solution of the utility model: a first installation groove is arranged at the bottom of the fixing plate, and a sealing strip is connected in the first installation groove.

[0009] As a further solution of the utility model: the water absorption and drying component includes a sealing plate fixedly connected to the threaded sealing head, a second installation groove is provided in the sealing plate, a drying block is installed in the second installation groove, the drying block is made of quicklime, and a zinc rod is fixedly connected to the drying block.

[0010] As a further solution of the utility model: a detection hole is arranged in the threaded sealing head, and a plunger is slidably connected in the detection hole.

[0011] As a further solution of the utility model: a pull rod is fixedly connected to the plunger.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model clamps and fixes the bolt protection structure through telescopic cylinders and sliding cylinders that are arranged in groups, thereby preventing the structure from falling off; at the same time, the bolts are cathodically rust-proofed through the arrangement of zinc rods; at the same time, the drying blocks made of limestone absorb the moisture in the equipment, thereby reducing the oxidation rate of the equipment and improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic structural diagram of a subway shield segment bolt protection device.

[0014] Figure 2 The utility model is a schematic diagram of the internal structure of a subway shield segment bolt protection device.

[0015] Figure 3 The utility model is a cross-sectional view of a subway shield segment bolt protection device.

[0016] In the figure: 1-screw, 2-screw head, 3-nut, 4-fixed plate, 5-first mounting groove, 6-sealing strip, 7-fixed cylinder, 8-telescopic cylinder, 9-sliding cylinder, 10-telescopic groove, 11-slider, 12-spring, 13-threaded mounting cylinder, 14-threaded sealing head, 15-sealing plate, 16-second mounting groove, 17-drying block, 18-detection hole, 19-plunger, 20-pull rod, 21-zinc rod, 22-hexagonal head. 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 3 In the embodiment of the utility model, a subway shield segment bolt protection device comprises a screw rod 1, one end of the screw rod 1 is fixedly connected with a screw head 2, the other end of the screw rod 1 is threadedly connected with a nut 3, a fixing plate 4 is arranged outside the screw head 2, a fixing tube 7 is fixedly connected to the fixing plate 4, a notch is arranged in the fixing tube 7, the notch and the screw head 2 cooperate with each other, a telescopic tube 8 is fixedly connected to the fixing tube 7, a sliding tube 9 is slidably connected to the telescopic tube 8, a telescopic groove 10 is arranged in the sliding tube 9, one end of the telescopic tube 8 is fixedly connected with a slider 11, the slider 11 is slidably connected in the telescopic groove 10, a spring 12 is arranged on the side of the slider 11 away from the telescopic tube 8, a threaded mounting tube 13 is fixedly connected to the sliding tube 9, a threaded sealing head 14 is threadedly connected in the threaded mounting tube 13, a water absorption and drying component for absorbing moisture on the outside of the screw rod 1 is arranged in the threaded sealing head 14, and a first mounting groove 5 is arranged at the bottom of the fixing plate 4 , a sealing strip 6 is connected in the first installation groove 5. The utility model first inserts the screw 1 into the fixed tube 7, and then inserts the fixed tube 7 and the screw 1 into the installation hole of the equipment, and then sticks the sealing plate 15 to the tail end of the fixed tube 7 through the sealing strip 6, so as to seal the fixed tube 7. Then, when the nut 3 needs to be installed, the sliding tube 9 is first inserted into the telescopic tube 8, and the slider 11 is inserted into the telescopic groove 10, and the threaded installation tube 13 is pressed. The threaded installation tube 13 compresses the spring 12 through the sliding tube 9. At this time, the sliding tube 9 is pressed down, so that the top of the screw 1 leaks out. At this time, the nut 3 can be threadedly connected to the screw 1, and then clamped by the nut 3 and the threaded installation tube 13, and then the threaded sealing head 14 is threadedly connected to the threaded installation tube 13, so that the screw 1, the screw head 2 and the nut 3 are sealed by the threaded installation tube 13, so as to seal the screw 1, the screw head 2 and the nut 3.

[0019] In one case of this embodiment, see Figure 1 to Figure 3 The threaded sealing head 14 is fixedly connected with a hexagonal head 22 . The utility model facilitates tightening the threaded sealing head 14 by setting the hexagonal head 22 .

[0020] In one case of this embodiment, see Figure 1 to Figure 3The water absorption and drying component includes a sealing plate 15 fixedly connected to a threaded sealing head 14, a second mounting groove 16 is provided in the sealing plate 15, a drying block 17 is installed in the second mounting groove 16, the drying block 17 is made of quicklime, a zinc rod 21 is fixedly connected to the drying block 17, the water absorption component first drives the zinc rod 21 to be pressed down synchronously by rotating the threaded sealing head 14, so that the zinc rod 21 contacts the screw 1, at this time, due to the strong activity of zinc, the cathode rust prevention of the screw 1, the screw head 2 and the nut 3 can be achieved by setting the zinc rod 21, and at the same time, the moisture in the equipment can be absorbed by the drying block 17 made of limestone, thereby reducing the oxidation rate of the equipment.

[0021] In one case of this embodiment, see Figure 1 to Figure 3 A detection hole 18 is provided in the threaded sealing head 14, a plunger 19 is slidably connected in the detection hole 18, and a pull rod 20 is fixedly connected to the plunger 19. The utility model can detect the pH value of the drying block 17 through the setting of the detection hole 18, and then detect the water absorption capacity of the drying block 17 through the pH value, and replace the drying block 17.

[0022] The working principle of the utility model is as follows: the utility model first inserts the screw 1 into the fixed tube 7, and then inserts the fixed tube 7 and the screw 1 into the installation hole of the equipment, and then sticks the sealing plate 15 to the tail end of the fixed tube 7 through the sealing strip 6, so as to seal the fixed tube 7. After that, when the nut 3 needs to be installed, first insert the sliding tube 9 into the telescopic tube 8, and insert the slider 11 into the telescopic groove 10, and press the threaded installation tube 13. The threaded installation tube 13 compresses the spring 12 through the sliding tube 9. At this time, the sliding tube 9 is pressed down, so that the top of the screw 1 leaks out. At this time, the nut 3 can be threadedly connected to the screw 1, and then clamped by the nut 3 and the threaded installation tube 13, and then the threaded sealing head 14 is threadedly connected to the threaded installation tube 13. The screw 1, the screw head 2 and the nut 3 are sealed by the threaded mounting tube 13, so as to seal and protect the screw 1, the screw head 2 and the nut 3. At the same time, the equipment rotates and presses down the threaded sealing head 14 to drive the zinc rod 21 to be pressed down synchronously, so that the zinc rod 21 contacts the screw 1. At this time, due to the strong activity of zinc, the cathode rust prevention of the screw 1, the screw head 2 and the nut 3 can be achieved by the setting of the zinc rod 21. At the same time, the moisture in the equipment can be absorbed by the drying block 17 made of limestone, so as to reduce the oxidation rate of the equipment. At the same time, the pH value of the drying block 17 can be detected by the setting of the detection hole 18, and then the water absorption capacity of the drying block 17 can be detected by the pH value, and the drying block 17 can be replaced.

[0023] 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.

[0024] 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 subway shield segment bolt protection device, comprising a screw rod, characterized in that: A screw head is fixedly connected to one end of the screw, and a nut is threadedly connected to the other end of the screw. A fixing plate is arranged on the outside of the screw head, and a fixing cylinder is fixedly connected to the fixing plate. A notch is arranged in the fixing cylinder, and the notch cooperates with the screw head. A telescopic cylinder is fixedly connected to the fixing cylinder, and a sliding cylinder is slidably connected to the telescopic cylinder. A telescopic groove is arranged in the sliding cylinder. A slider is fixedly connected to one end of the telescopic cylinder, and the slider is slidably connected in the telescopic groove. A spring is arranged on the side of the slider away from the telescopic cylinder, and a threaded mounting cylinder is fixedly connected to the sliding cylinder, and a threaded sealing head is threadedly connected in the threaded mounting cylinder. A water absorption and drying component for absorbing moisture on the outside of the screw is arranged in the threaded sealing head.

2. A subway shield segment bolt protection device according to claim 1, characterized in that: A hexagonal head is fixedly connected to the threaded sealing head.

3. The subway shield segment bolt protection device according to claim 1 is characterized in that: A first mounting groove is arranged at the bottom of the fixing plate, and a sealing strip is connected in the first mounting groove.

4. The subway shield segment bolt protection device according to claim 1 is characterized in that: The water absorption and drying component comprises a sealing plate fixedly connected to a threaded sealing head, a second mounting groove is arranged in the sealing plate, a drying block is installed in the second mounting groove, the drying block is made of quicklime, and a zinc rod is fixedly connected to the drying block.

5. A subway shield segment bolt protection device according to claim 4, characterized in that: A detection hole is arranged in the threaded sealing head, and a plunger is slidably connected in the detection hole.

6. A subway shield segment bolt protection device according to claim 5, characterized in that: A pulling rod is fixedly connected to the plunger.

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