Pipe piece flexible joint rubber layer fixing device

Abstract

The utility model relates to a rubber layer fixing device for a flexible joint of a duct piece, which is clamped and fixed at the intersection of duct piece reinforcing steel bars through a flexible joint lower connecting piece and a flexible joint upper connecting piece and comprises a rubber fixing piece, a connecting piece and a supporting rib, the rubber fixing piece is in a U shape, and a rubber layer is arranged on the inner wall of the rubber fixing piece. A threaded hole is formed in the outer side of the closed end of the rubber fixing piece. The duct piece has the advantages that the rubber layer is arranged on the inner side of the rubber fixing piece in a clamping mode, the stability of the rubber layer and the duct piece is guaranteed, the rubber layer is prevented from being separated from the duct piece, the end of the supporting rib or the end of the connecting piece is prevented from puncturing the rubber layer, the integrity of the rubber layer is maintained, and good waterproof performance is achieved; the rubber layer is connected with the duct piece reinforcing steel bar through the flexible connector lower connecting piece and the flexible connector upper connecting piece, the position of the rubber layer is fixed, and the rubber layer is prevented from moving in the duct piece pouring process.

Description

Technical Field

[0001] The utility model relates to the technical field of shield tunneling, in particular to a fixing device for the rubber layer of a segment flexible joint. Background Art

[0002] Problems such as uneven settlement of the foundation, segment floating, and structural seismic resistance often occur in shield tunnels. For the above-mentioned rigid joints, stress concentration will occur, which will cause segment damage in the lightest case and tunnel collapse in the severest case. At the same time, the above-mentioned segments all need to be installed manually or mechanically later, and the construction progress is slow.

[0003] In the prior art, taking the segment flexible joint disclosed in the patent publication number CN206092011U as an example, this segment flexible joint improves the installation efficiency through a clamping method, realizes large movements in any direction such as stretching, compression, shearing, and rotation, allows the segment to generate a certain degree of opening and dislocation to adapt to large formation deformations, protects the segment from damage, and improves the stability of segment support. However, there is a risk that the grouting material between the support ribs and the rubber layer is not densely filled, and water seepage is likely to occur. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a fixing device for the rubber layer of a segment flexible joint.

[0005] This fixing device for the rubber layer of a segment flexible joint is clamped at the intersection of segment steel bars through a lower connecting part of the flexible joint and an upper connecting part of the flexible joint, and includes: a rubber fixing part, a connecting part, and a support rib. The rubber fixing part is in a U shape, a rubber layer is provided on the inner wall of the rubber fixing part, and threaded holes are provided on the outer side of the closed end of the rubber fixing part.

[0006] The upper connecting part of the flexible joint and the lower connecting part of the flexible joint are clamped on the upper and lower sides of the intersection of segment steel bars. The support rib is horizontally connected to the lower part of the lower connecting part of the flexible joint through a thread. One end of the support rib is provided with a chuck. The connecting part is in a cylindrical shape. A circumferential groove matching the chuck is provided on the surface of one end of the connecting part, and the other end is connected to the threaded hole of the rubber fixing part.

[0007] Preferably, grooves are provided on the inner walls on both the upper and lower sides of the rubber fixing part, and the rubber layer is penetrated through the grooves of the rubber fixing part.

[0008] Preferably, the connecting part is in a cylindrical shape, and a threaded section is provided at one end of the connecting part away from the support rib. The threaded section of the connecting part is fixed in the threaded hole of the rubber fixing part through a thread.

[0009] Preferably, a horizontally penetrating threaded hole is provided in the lower part of the lower connecting part of the flexible joint. The support rib is provided with a threaded surface, and the support rib penetrates through the threaded hole to be connected to the lower connecting part of the flexible joint.

[0010] Preferably, when the supporting rib rotates axially, the supporting rib and the connecting piece rotate relatively, and the rubber fixing piece moves horizontally.

[0011] Preferably, cross grooves are provided on the opposite surfaces of the upper connector of the flexible joint and the lower connector of the flexible joint, and the cross-sectional shape of the grooves is a semicircular shape matching the steel bars of the pipe segment. The upper connector of the flexible joint and the lower connector of the flexible joint are fixedly connected by bolts.

[0012] The beneficial effects of the utility model are:

[0013] 1) The rubber layer is arranged on the inner side of the rubber fixing part by means of a clamping connection, which not only ensures the stability of the rubber layer and the tube segment and prevents the rubber layer from being separated from the tube segment, but also avoids the end of the supporting rib or the connecting part from piercing the rubber layer, thereby maintaining the integrity of the rubber layer and having good waterproof performance.

[0014] 2) The lower connector of the flexible joint and the upper connector of the flexible joint connect the rubber layer to the steel bars of the pipe segment, fix the position of the rubber layer, and prevent the rubber layer from moving during the casting process of the pipe segment.

[0015] 3) The support rib is connected to one end of the connector through the clamp, and the connector is cylindrical. Therefore, when the position of the rubber fixing is adjusted by rotating the support rib, the support rib and the connector rotate relatively, and the rubber fixing moves horizontally without deflection of the rubber fixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the rubber layer fixing device of the flexible joint of the pipe segment.

[0017] Explanation of the reference numerals: rubber layer 1, rubber fixing part 2, connecting part 3, supporting rib 4, lower connecting part of flexible joint 5, segment reinforcement 6, upper connecting part of flexible joint 7, nut 8, bolt 9. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0019] As an example, Figure 1 As shown, the rubber layer fixing device of the pipe segment flexible joint is clamped at the intersection of the pipe segment steel bars 6 through the flexible joint lower connecting piece 5 and the flexible joint upper connecting piece 7, and includes: a rubber fixing piece 2, a connecting piece 3 and a supporting rib 4.

[0020] The upper connector 7 of the flexible joint and the lower connector 5 of the flexible joint are clamped on the upper and lower sides of the intersection of the segment steel bars 6. Cross-shaped grooves are provided on the opposite surfaces of the upper connector 7 of the flexible joint and the lower connector 5 of the flexible joint. The cross-sectional shape of the groove is a semi-circular shape matching the segment steel bars 6. The upper connector 7 of the flexible joint and the lower connector 5 of the flexible joint are fixedly connected by bolts 9. Four non-through threaded holes are provided on the upper surface of the lower connector 5 of the flexible joint. Four through threaded holes are provided on the upper connector 7 of the flexible joint. The bottom ends of the four bolts 9 penetrate through the upper connector 7 of the flexible joint and then extend into the lower connector 5 of the flexible joint, and the top ends are fitted with nuts 8 to connect the lower connector 5 of the flexible joint and the upper connector 7 of the flexible joint into a whole. This prevents the rubber layer 1 from moving during the segment pouring process.

[0021] A horizontally through threaded hole is provided in the lower part of the lower connector 5 of the flexible joint. The support rib 4 has a threaded surface. The support rib 4 penetrates through the threaded hole and is connected to the lower connector 5 of the flexible joint. The position of the rubber layer 1 can be adjusted by rotating the support rib 4. A chuck is provided at one end of the support rib 4 facing the rubber fixing member 2. The connecting member 3 is in a cylindrical shape. A circumferential groove matching the chuck is provided on the surface of one end of the connecting member 3. This connection ensures that there is no relative displacement between the support rib 4 and the connecting member 3, but the rotation of the support rib 4 will not drive the rotation of the connecting member 3, avoiding the rotation of the rubber layer 1 during the process of adjusting the position of the rubber layer 1. When the support rib 4 rotates axially, the support rib 4 and the connecting member 3 rotate relative to each other, that is, only horizontal movement occurs between the connecting member 3 and the rubber fixing member 2, without rotation.

[0022] The rubber fixing member 2 is in a U shape. The rubber layer 1 is provided on the inner wall of the rubber fixing member 2. Specifically, grooves are provided on the inner walls of the upper and lower sides of the rubber fixing member 2. The rubber layer 1 is threaded through the grooves of the rubber fixing member 2, which not only prevents the rubber layer from detaching from the segment but also maintains the integrity of the rubber layer 1, ensuring good waterproof effect.

[0023] A threaded hole is provided on the outer side of the closed end of the rubber fixing member 2; a threaded section is provided at one end of the connecting member 3 away from the support rib 4. The threaded section of the connecting member 3 is fixed in the threaded hole of the rubber fixing member 2 by threading.

Claims

1. A rubber layer fixing device for a flexible joint of a pipe segment, characterized in that: It is clamped at the intersection of the segment steel bars through the lower connecting piece of the flexible joint and the upper connecting piece of the flexible joint, and includes: a rubber fixing piece, a connecting piece and a supporting rib. The rubber fixing piece is in a U shape, a rubber layer is provided on the inner wall of the rubber fixing piece, and threaded holes are provided on the outer side of the closed end of the rubber fixing piece; The upper connecting piece of the flexible joint and the lower connecting piece of the flexible joint are clamped on the upper and lower sides of the intersection of the segment steel bars. The supporting rib is horizontally connected to the lower part of the lower connecting piece of the flexible joint through a thread. A chuck is provided at one end of the supporting rib. The connecting piece is in a cylindrical shape, and a circumferential groove matching the chuck is provided on the surface of one end of the connecting piece, and the other end is connected to the threaded hole at the bottom of the rubber fixing piece.

2. The rubber layer fixing device for flexible joints of pipe segments according to claim 1 is characterized in that: Grooves are provided on the inner walls on both the upper and lower sides of the rubber fixing piece, and the rubber layer is arranged in the grooves of the rubber fixing piece.

3. The rubber layer fixing device for flexible joints of pipe segments according to claim 1 is characterized in that: The connecting piece is in a cylindrical shape, and a threaded section is provided at one end of the connecting piece away from the supporting rib. The threaded section of the connecting piece is fixed in the threaded hole of the rubber fixing piece through a thread.

4. The rubber layer fixing device for flexible joints of pipe segments according to claim 1 is characterized in that: A horizontally penetrating threaded hole is provided in the lower part of the lower connecting piece of the flexible joint. The supporting rib is provided with a threaded surface, and the supporting rib penetrates through the threaded hole to be connected to the lower connecting piece of the flexible joint.

5. The rubber layer fixing device for flexible joints of pipe segments according to claim 4 is characterized in that: When the supporting rib rotates axially, the supporting rib and the connecting piece rotate relative to each other, and the rubber fixing piece moves horizontally.

6. The rubber layer fixing device for flexible joints of pipe segments according to claim 1 is characterized in that: Cross-shaped grooves are provided on the opposite surfaces of the upper connecting piece of the flexible joint and the lower connecting piece of the flexible joint. The cross-sectional shape of the groove is a semi-circular shape matching the segment steel bars. The upper connecting piece of the flexible joint and the lower connecting piece of the flexible joint are fixedly connected by bolts.

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