Tunnel portal sealing structure before shield receiving

Abstract

The utility model relates to the technical field of shield tunneling, in particular to a shield receiving front tunnel portal sealing structure which comprises a connecting ring plate, a connecting block is fixedly connected to the surface of the connecting ring plate, a connecting stud is fixedly connected to the inner side of the connecting ring plate, and a pressing block is connected to the surface of the connecting stud in a sleeved mode. The outer surface of the connecting stud is sleeved with a nut through a thread, curtain cloth is connected between the pressing block and the connecting ring plate, a steel wire rope is fixedly connected to the surface of the curtain cloth, and an adjusting rod is fixedly connected to the surface of the steel wire rope. The curtain cloth is connected and supported in the connecting ring plate under the action of the pressing block, and the action position of the steel wire rope in the connecting ring plate is changed under the action of the screw on the adjusting rod when the adjusting rod is connected with the steel wire rope, so that the effect of adjusting and controlling the connecting angle of the curtain cloth on the connecting ring plate is achieved; and the sealing performance of the curtain cloth to a tunnel portal before shield receiving is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a shield machine receiving front tunnel door sealing structure. Background Art

[0002] The shield receiving reinforcement method is to set up a 600mm thick plain ground-connected wall 12 meters outside the tunnel portal, and perform rotary grouting reinforcement within 6m near the tunnel portal inside the plain wall. A precipitation well is set up outside the rotary grouting reinforcement body inside the plain wall. Due to the characteristics of the rounded gravel layer itself, the water-stopping effect of the rotary grouting reinforcement is poor, and the shield receiving water gushing risk is very high. Utility Model Content

[0003] The utility model aims to provide a shield receiving front tunnel door sealing structure to solve the problem in the above background technology that due to the characteristics of the gravel layer itself, the rotary jet reinforcement water-stopping effect is poor and the shield receiving water gushing risk is very high.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shield receiving front tunnel door sealing structure, comprising a connecting ring plate, a connecting block is fixedly connected to the surface of the connecting ring plate, a connecting stud is fixedly connected to the inner side of the connecting ring plate, a pressure block is sleeved on the surface of the connecting stud, a nut is sleeved on the outer surface of the connecting stud through a thread, a curtain is connected between the pressure block and the connecting ring plate, a steel wire rope is fixedly connected to the surface of the curtain, an adjusting rod is fixedly connected to the surface of the steel wire rope, and a limiting groove is provided on the surface of the connecting ring plate.

[0005] Preferably, through holes are formed through the surface of the connection block, the connection blocks are evenly distributed on the outer surface of the connection ring plate, and the curtain fabric is made of rubber.

[0006] Preferably, the curtain fabric is in the shape of a circular ring sheet, and is connected by a pressing block and a connecting ring plate, and the cross section of the pressing block is in an "L" shape.

[0007] Preferably, the pressing blocks are connected to the inner surface of the connecting ring plate through connecting studs and nuts, and the pressing blocks are evenly distributed on the inner surface of the connecting ring plate.

[0008] Preferably, both ends of the steel wire rope are fixedly connected to the surfaces of the curtain cloth and the adjusting rod, and the cross-section of the adjusting rod is circular.

[0009] Preferably, a round rod is fixedly connected to the surface of the adjusting rod, and the round rod and the limiting groove are inserted and slidably connected, a screw is fixedly connected to the outer surface of the adjusting rod, and a screw sleeve is connected to the surface of the screw that passes through the limiting groove.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. Through the connection between the connecting ring plate and the connecting block, under the action of the connecting block and the bolts, the installation connection effect of the connecting ring plate is realized. Through the connection between the pressure block and the connecting stud, and the connection between the connecting stud and the nut, the support and control effect of the position of the pressure block on the connecting ring plate is achieved. Through the action of the pressure block, the connection and support operation of the curtain in the connecting ring plate is completed. In the connection between the adjusting rod and the wire rope, the action position of the wire rope in the connecting ring plate is changed through the action of the screw on the adjusting rod, thereby achieving the effect of regulating the connection angle of the curtain on the connecting ring plate, and improving the sealing performance of the curtain on the front tunnel door of the shield receiving machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the engineering of the utility model;

[0013] Figure 2 It is a three-dimensional schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a partial three-dimensional schematic diagram of the structure of the utility model;

[0015] Figure 4 It is a partial three-dimensional exploded schematic diagram of the connection structure connecting the ring plate and the curtain cloth of the utility model;

[0016] Figure 5 It is a partially exploded three-dimensional schematic diagram of the curtain and wire rope connection structure of the utility model.

[0017] In the figure: 1. connecting ring plate; 2. connecting block; 3. curtain cloth; 4. pressure block; 5. connecting stud; 6. nut; 7. wire rope; 8. adjusting rod; 9. limit groove. DETAILED DESCRIPTION

[0018] See also Figure 1-5 , an embodiment provided by the utility model:

[0019] A shield receiving front tunnel door sealing structure comprises a connecting ring plate 1, a connecting block 2 is fixedly connected to the surface of the connecting ring plate 1, a connecting stud 5 is fixedly connected to the inner side of the connecting ring plate 1, a pressing block 4 is sleeved on the surface of the connecting stud 5, a nut 6 is sleeved on the outer surface of the connecting stud 5 through a thread, a curtain 3 is connected between the pressing block 4 and the connecting ring plate 1, a steel wire rope 7 is fixedly connected to the surface of the curtain 3, an adjusting rod 8 is fixedly connected to the surface of the steel wire rope 7, and a limiting groove 9 is provided on the surface of the connecting ring plate 1. By connecting the connecting ring plate 1 and the connecting block 2, under the action of the connecting block 2 and the bolts, the installation support effect of the use position of the connecting ring plate 1 is realized, and under the connection of the pressing block 4 and the connecting stud 5, the installation support operation of the curtain 3 on the connecting ring plate 1 is completed through the action of the pressing block 4.

[0020] Furthermore, through holes are opened through the surface of the connecting block 2, and the connecting block 2 is evenly distributed on the outer surface of the connecting ring plate 1. The material of the curtain 3 is rubber. Through the connection between the connecting block 2 and the connecting ring plate 1, under the action of the connecting block 2 and the bolts, the installation support effect of the connecting ring plate 1 is achieved. Under the connection of the curtain 3 and the connecting ring plate 1, the receiving sealing performance of the shield machine is improved.

[0021] Furthermore, the curtain 3 is in the shape of a circular ring sheet, and the curtain 3 is connected to the connecting ring plate 1 by a pressing block 4. The cross section of the pressing block 4 is in an "L" shape. Through the action of the pressing block 4, the installation support effect of the curtain 3 on the connecting ring plate 1 is achieved.

[0022] Furthermore, the pressure block 4 is connected to the inner surface of the connecting ring plate 1 through the connecting studs 5 and the nuts 6. The pressure block 4 is evenly distributed on the inner surface of the connecting ring plate 1. Through the connection between the connecting ring plate 1 and the connecting studs 5, the connection between the connecting studs 5 and the pressure block 4, and the connection between the connecting studs 5 and the nuts 6, the installation support effect of the pressure block 4 on the connecting ring plate 1 is completed, thereby achieving the installation support effect of the curtain 3 on the connecting ring plate 1.

[0023] Furthermore, both ends of the steel wire rope 7 are fixedly connected to the surface of the curtain 3 and the adjusting rod 8. The cross-section of the adjusting rod 8 is circular. Through the connection between the curtain 3 and the steel wire rope 7, under the action of the steel wire rope 7, the operation of regulating the action angle of the curtain 3 on the connecting ring plate 1 is completed.

[0024] Furthermore, a round rod is fixedly connected to the surface of the adjusting rod 8, and the round rod and the limiting groove 9 are plug-in and slidingly connected, a screw is fixedly connected to the outer surface of the adjusting rod 8, and the screw passes through the limiting groove 9 and is connected to the surface of the screw sleeve, through the connection between the adjusting rod 8 and the screw, under the plug-in and sliding of the screw and the limiting groove 9, the effect of regulating the acting position of the wire rope 7 in the connecting ring plate 1 is achieved, and through the plug-in and sliding connection of the round rod and the limiting groove 9, the effect of limiting the angle of the position of the adjusting rod 8 on the connecting ring plate 1 is completed.

[0025] Working principle: When installing the connecting ring plate 1, the connection block 2 and the bolts are used to complete the installation operation of the connecting ring plate 1. Under the connection of the pressure block 4 and the connecting stud 5, the connection of the connecting stud 5 and the nut 6 achieves the installation support effect of the curtain 3 on the connecting ring plate 1. When it is necessary to adjust the action angle of the curtain 3, turn the screw sleeve on the screw rod of the adjusting rod 8 to change the position of the adjusting rod 8 on the connecting ring plate 1, and then change the action position of the wire rope 7 in the connecting ring plate 1 to achieve the effect of regulating the action angle of the curtain 3, and make the curtain 3 fit tightly against the outer arc surface of the shield body. When the shield tail drags out the curtain 3, immediately tighten the wire rope 7 again to make the curtain 3 fit tightly against the outer arc surface of the concrete pipe segment to prevent water leakage.

Claims

1. A shield receiving front tunnel door sealing structure, comprising a connecting ring plate, characterized in that: A connecting block is fixedly connected to the surface of the connecting ring plate, a connecting stud is fixedly connected to the inner side of the connecting ring plate, a pressure block is sleeved on the surface of the connecting stud, a nut is sleeved on the outer surface of the connecting stud through a thread, a curtain is connected between the pressure block and the connecting ring plate, a steel wire rope is fixedly connected to the surface of the curtain, an adjusting rod is fixedly connected to the surface of the steel wire rope, and a limiting groove is provided on the surface of the connecting ring plate.

2. A shield receiving front door sealing structure according to claim 1, characterized in that: Through holes are formed on the surface of the connection block, and the connection blocks are evenly distributed on the outer surface of the connection ring plate. The curtain fabric is made of rubber.

3. A shield receiving front door sealing structure according to claim 1, characterized in that: The curtain cloth is in the shape of a circular ring sheet, and is connected by a pressing block and a connecting ring plate, and the cross section of the pressing block is in an "L" shape.

4. The shield receiving front door sealing structure according to claim 1, characterized in that: The pressing blocks are connected to the inner surface of the connecting ring plate through connecting studs and nuts, and the pressing blocks are evenly distributed on the inner surface of the connecting ring plate.

5. The shield receiving front door sealing structure according to claim 1, characterized in that: The two ends of the steel wire rope are fixedly connected to the surfaces of the curtain cloth and the adjusting rod, and the cross section of the adjusting rod is circular.

6. The shield receiving front door sealing structure according to claim 1, characterized in that: A round rod is fixedly connected to the surface of the adjusting rod, and the round rod and the limiting groove are inserted and slidably connected. A screw is fixedly connected to the outer surface of the adjusting rod, and a screw sleeve is connected to the surface of the screw that passes through the limiting groove.

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