A subway tunnel segment rectifying device

Abstract

The application discloses a subway tunnel segment correcting device and belongs to the technical field of segment correcting devices, which comprises a base pipe, a horizontal rod rotatably connected to one end of the base pipe, a grouting channel formed in the base pipe and the horizontal rod, a notch arranged on one side of the horizontal rod, a folding rod slidingly arranged in the horizontal rod, and the folding rod capable of extending out of the notch. The horizontal rod is extended into the back side of the segment to facilitate grouting, and the horizontal rod can be used as a framework or an anchoring structure to anchor the segment, so that the corrected segment has high structural stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of segment rectifying device, in particular to a subway tunnel segment rectifying device. BACKGROUND

[0002] After the shield segment completes a grouting, the segment will be lifted or sunk due to various reasons, and the segment will be out of the design position. The segment rectifying device is generally used to rectify the segment after the shield segment is out of the design position. The method is to use the secondary grouting to make up for the defects of the segment. However, the grouting pipe is not easy to penetrate into the back side of the segment. On the one hand, the grouting is difficult to spread in a large range on the back side of the segment. On the other hand, the support stability of the grouting is insufficient. SUMMARY

[0003] The present application relates to the technical field of segment rectifying device, in particular to a subway tunnel segment rectifying device.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0005] The subway tunnel segment rectifying device comprises a base pipe, one end of the base pipe is rotationally connected with a horizontal rod, a grouting channel is formed in the base pipe and the horizontal rod, a notch is arranged on one side of the horizontal rod, a folding rod is slidably arranged in the horizontal rod, the folding rod can be extended out of the notch, and the folding rod forms an angle when it is extended out of the notch to form a support on the back side of the segment.

[0006] Preferably, the folding rod is provided with cutting teeth and a grouting hole.

[0007] Preferably, a cylinder is slidably and rotationally arranged in the base pipe, a helical groove is arranged on the inner wall of the base pipe, and a ball is arranged on the side surface of the cylinder and slidably connected in the helical groove.

[0008] One end of the horizontal rod is fixedly connected with a circular column, the circular column is rotationally connected with the base pipe, one end of the circular column is provided with a square hole, the cylinder is fixedly connected with a square rod, the square rod is slidably connected with the square hole, a compression cavity is formed between the cylinder and the circular column, and the compression cavity is filled with a to-be-cured glue liquid.

[0009] Preferably, a communication groove is arranged on the inner wall of the base pipe and corresponds to the cylinder.

[0010] Preferably, the folding rod comprises a first sliding block, a second sliding block and two supporting rods, a supporting spring is fixedly connected between the first sliding block and the end wall of the sliding groove of the horizontal rod, a limiting sliding groove is arranged at the other end of the horizontal rod, the second sliding block is slidably connected in the limiting sliding groove and is pushed to slide by a pushing piece, the first sliding block and the second sliding block are respectively hingedly connected with one supporting rod, the two supporting rods are hingedly connected with each other and are provided with a torsional spring, and the hinged shafts of the supporting rods and the second sliding block can be slid out of the limiting sliding groove.

[0011] The included angle of the two supporting rods varies between 175° and 150°.

[0012] Preferably, the pushing member comprises an arc-shaped plate, a plurality of arc-shaped protrusions and an ejection protrusion are fixedly connected to the inner wall of the arc-shaped plate, the ejection protrusion has a protruding height greater than that of the arc-shaped protrusions, one side of the second sliding block is fixedly connected with a jacking rod, and the jacking rod is provided corresponding to the arc-shaped protrusions and the ejection protrusion.

[0013] Preferably, the base pipe is provided with a cushion block, and arc-shaped cushion plates are slidingly connected to the adjusting sliding grooves on both sides of the cushion block.

[0014] The subway tunnel segment correcting device provided by the application has the advantages that the horizontal rod is extended into the back side of the segment to facilitate grouting, and the horizontal rod can be used as a framework or anchoring structure to anchor the segment, so that the corrected segment has high structural stability.

[0015] The folding rod reciprocates in the horizontal rod as a whole under the action of the jacking rod and the arc-shaped protrusion, the cutting teeth facilitate cutting of the soil, and the resistance of the horizontal rod to rotation is reduced; when the horizontal rod is rotated to the required position, the jacking rod abuts against the ejection protrusion, the height of the ejection protrusion causes the hinge shaft of the supporting rod and the second sliding block to slide out of the limiting sliding groove, so that the supporting rod can rotate relative to the second sliding block, and the two supporting rods are rotated into a support shape under the action of the torsional spring; if there is a supporting space between the segment and the tunnel, the horizontal rod and the supporting rod form a framework in the grout, and the framework is stronger than a separate grouting reinforcement structure. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a basic structure schematic diagram of the application;

[0017] Figure 2 is a sectional view of the connecting structure of the base pipe;

[0018] Figure 3 is Figure 2 is a local enlarged view of E in

[0019] Figure 4 is a sectional view of the connecting structure of the base pipe and the horizontal rod of the application;

[0020] Figure 5 is a schematic diagram of the two supporting rods forming a support shape of the application;

[0021] Figure 6 is a state diagram of the application along the gap between the two segments;

[0022] Figure 7 is a state diagram of the application in which the horizontal rod is rotated to the back side of one of the segments. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] Example 1

[0025] like Figures 1 to 7 As shown, the present invention provides a subway tunnel segment straightening device, including a base pipe 1, a pad 11 fitted onto the base pipe 1, and a through hole provided in the pad 11. The base pipe 1 is slidably connected through the through hole. According to the segment straightening requirements, the position of the segment and the pad 11 is adjusted, and then a reinforced whole is formed by welding or bolting. Adjusting grooves 12 are respectively provided on both sides of the pad 11, and arc-shaped pads 13 are slidably connected in the adjusting grooves 12. When the tunnel inner wall is soft soil and bulges outward, causing the segment to bulge and misalign, the arc-shaped pad 13 on the bulging side is pushed by a hydraulic jack on the bulging side to push back and correct the bulging and misaligned segment. After correction, the arc-shaped pad 13 on that side is welded to the pad 11. The base pipe 1 is grouted inside and forms an anchoring structure with the arc-shaped pad 13. One end of the base pipe 1 is rotatably connected to the crossbar 2. After the crossbar 2 rotates to the back side of the segment, it can also pull the base pipe 1 outward to correct the segment that is sunken into the tunnel wall. A grouting channel 3 is formed inside the base pipe 1 and the crossbar 2. A slot 21 is set on one side of the crossbar 2. A sliding folding rod 4 is set inside the crossbar 2. The folding rod 4 can extend out of the slot 21. When the folding rod 4 extends out of the slot 21, it forms an angle and provides support on the back side of the segment. The folding rod 4 is equipped with cutting teeth and grout outlet holes. The cutting teeth extend out of the slot 21 and, together with the rotation of the crossbar 2, cut the soft soil on the back side of the segment, reducing the resistance to rotation inside the crossbar 2.

[0026] This invention provides one or more protrusions depending on the condition of the pipe segment. At the joint between two pipe segments, a groove extending to the back side of the segment is first created using a conventional slotting device. A crossbar 2, adapted to the groove, is inserted into the bottom of the groove. Then, the crossbar 2 rotates relative to the base pipe 1 at an angle between 10° and 170° (e.g., ...). Figure 6 After the crossbar 2 is rotated 90°, it forms Figure 7 (State), on the one hand, the crossbar 2 extends into the back side of the segment to facilitate grouting, and on the other hand, the crossbar 2 can serve as a skeleton or anchoring structure to anchor the segment, resulting in strong stability of the corrected segment structure.

[0027] Example 2

[0028] like Figures 1 to 7As shown, the cylinder 5 is slidingly and rotatably arranged in the base pipe 1, that is, the cylinder 5 is axially slidingly and rotatably arranged in the base pipe 1, the inner wall of the base pipe 1 is provided with a spiral groove, the rotation angle of the spiral groove is between 80°-90°, the side surface of the cylinder 5 is provided with a ball 51, the ball 51 is slidingly connected in the spiral groove, when the cylinder 5 is subjected to an axial thrust, due to the rotation of the spiral groove, the cylinder 5 is rotated;

[0029] The cross bar 2 is fixedly connected with a circular column 22, the circular column 22 is rotatably connected with the base pipe 1, the circular column 22 is provided with a square hole at one end, the cylinder 5 is fixedly connected with a square rod 52, the square rod 52 is slidingly connected with the square hole, the cylinder 5 can move towards the circular column 22 and rotate with the circular column 22, a compression cavity 53 is formed between the cylinder 5 and the circular column 22, the compression cavity 53 is filled with a solidifiable glue liquid, the solidifiable glue liquid is injected into the compression cavity 53 before the pipe piece is corrected, the solidifiable glue liquid is a cement slurry, water glass or other existing grouting reinforcement liquid which is correspondingly matched according to the conditions of soft soil, cavity and water seepage at the back side of the pipe piece, the solidifiable glue liquid has good fluidity before solidification and has a solidification filling effect after being injected into the back side of the pipe piece or the gap between two pipe pieces, the inner wall of the base pipe 1 is provided with a communication groove 54, the communication groove 54 is arranged corresponding to the cylinder 5, and the communication groove 54 is arranged in a staggered manner with the spiral groove.

[0030] In the embodiment 2, the outer end of the base pipe 1 is threadedly connected with a grouting pipe, by injecting high-pressure slurry, the high-pressure slurry pushes the cylinder 5 to move along the axial direction of the base pipe 1, due to the limiting of the ball 51 and the spiral groove, the cylinder 5 rotates with the circular column 22, thereby driving the cross bar 2 to rotate to the back side of the pipe piece; when the cylinder 5 moves along the axial direction of the base pipe 1, the solidifiable glue liquid filled in the compression cavity 53 is sprayed out of the slot 21 through the grouting channel 3, the solidifiable glue liquid can first soften the soft soil at the back side of the pipe piece, so that the resistance of the cross bar 2 to rotation is reduced;

[0031] With further movement of the cylinder 5 along the axial direction of the base pipe 1, the outer end of the cylinder 5 moves towards the cross bar 2 and exposes one end of the communication groove 54, the injected slurry outside is pressed into the cavity between the pipe piece separated by the cross bar 2 and the inner wall of the tunnel through the communication groove 54-grouting channel 3, thereby facilitating the deep penetration of a large amount of slurry into the back side of the pipe piece to improve the reinforcement effect.

[0032] Embodiment 3

[0033] As Figures 1 to 7As shown, the folding rod 4 comprises a first sliding block 41, a second sliding block 42 and two supporting rods 43, the first sliding block 41 is fixedly connected with the supporting spring 44 between the sliding groove end wall of one end of the crossbar 2, the other end of the crossbar 2 is provided with a limiting sliding groove 45, the second sliding block 42 is slidingly connected in the limiting sliding groove 45 and is pushed to slide by the pushing piece, the first sliding block 41 and the second sliding block 42 are respectively hingedly connected with one supporting rod 43, the two supporting rods 43 are hingedly connected with each other and are provided with a torsional spring, the hinging shaft of the supporting rod 43 and the second sliding block 42 can slide out of the limiting sliding groove 45, the included angle of the two supporting rods 43 changes between 175° to 150°; that is, after the hinging shaft of the supporting rod 43 and the second sliding block 42 leaves the limiting sliding groove 45, the torsional spring makes the included angle of the two supporting rods 43 rotate from 175° to 150°, the first sliding block 41 and the second sliding block 42 are provided with the anti-back structure of the prior art, such as the ratchet rack and the elastic card, the limiting hole and the spring plug rod, the first sliding block 41 and the second sliding block 42 are close to each other and locked when the two supporting rods 43 form a supporting framework state (for the case that there is a cavity between the segment and the inner wall of the tunnel, a framework support is formed in the grouting liquid, and the structural strength is further improved);

[0034] The pushing piece comprises an arc-shaped plate 6, a plurality of arc-shaped protrusions 61 and an ejection protrusion 62 are fixedly connected on the inner wall of the arc-shaped plate 6, the protruding height of the ejection protrusion 62 is greater than that of the arc-shaped protrusion 61, a jacking rod 63 is fixedly connected on one side of the second sliding block 42, the jacking rod 63 is provided corresponding to the arc-shaped protrusion 61 and the ejection protrusion 62 (the positions of the arc-shaped protrusion 61 and the ejection protrusion 62 are designed according to requirements); the reference line is set on the base pipe 1 relative to the segment, the external grouting pipe is used for grouting or suction by the reciprocating pump, when the reference line does not rotate to the predetermined angle relative to the segment, the grouting liquid is sucked back, so that the cylindrical column 5, the circular column 22 and the crossbar 2 are rotated (the communication groove 54 does not play a communication role before), the jacking rod 63 at one end of the folding rod 4 repeatedly acts on the adjacent arc-shaped protrusion 61, so that the folding rod 4 can reciprocate and saw, and it is easier to rotate and cut into the back side of the segment in cooperation with the cutting teeth.

[0035] In the embodiment 3, the crossbar 2 is rotated by the grouting pressure in the embodiment 2, when the crossbar 2 rotates, the jacking rod 63 cooperates with the arc-shaped protrusion 61 to make the folding rod 4 reciprocate as a whole in the crossbar 2, the cutting teeth conveniently cut the soil body, and the resistance of the crossbar 2 to rotate is reduced; when the crossbar 2 rotates to the required position, that is, the jacking rod 63 abuts against the ejection protrusion 62, the height of the ejection protrusion 62 makes the hinging shaft of the supporting rod 43 and the second sliding block 42 slide out of the limiting sliding groove 45, so that the supporting rod 43 can rotate relative to the second sliding block 42 (the supporting rod 43 is limited and cannot rotate in the limiting sliding groove 45), the two supporting rods 43 are rotated into a supporting state under the action of the torsional spring, if there is a supporting space between the segment and the tunnel, the crossbar 2 and the supporting rod 43 form a framework in the grouting liquid, and the structure is stronger than the separate grouting reinforcement structure.

[0036] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A subway tunnel segment rectifying device, comprising a base pipe (1) having one end rotatably connected to a crossbar (2), and a grouting channel (3) formed in the base pipe (1) and the crossbar (2), characterized in that: The horizontal rod (2) is provided with a notch (21) on one side, a folding rod (4) slides in the horizontal rod (2), the folding rod (4) can be extended out of the notch (21), and the folding rod (4) forms an angle and supports the back side of the pipe piece when the folding rod (4) is extended out of the notch (21); The folding rod (4) is provided with cutting teeth and a slurry outlet hole; A cylinder (5) slides and rotates in the base pipe (1), a helical groove is arranged on the inner wall of the base pipe (1), and a ball (51) is arranged on the side surface of the cylinder (5) and slidably connected in the helical groove; One end of the horizontal rod (2) is fixedly connected with a circular column (22), the circular column (22) is rotationally connected with the base pipe (1), one end of the circular column (22) is provided with a square hole, the cylinder (5) is fixedly connected with a square rod (52), the square rod (52) is slidably connected with the square hole, and a compression cavity (53) is formed between the cylinder (5) and the circular column (22), and the compression cavity (53) is filled with a curing glue solution; A communication groove (54) is arranged on the inner wall of the base pipe (1) and corresponds to the cylinder (5); The folding rod (4) comprises a first sliding block (41), a second sliding block (42) and two supporting rods (43), a supporting spring (44) is fixedly connected between the first sliding block (41) and the end wall of the sliding groove at one end of the horizontal rod (2), a limiting sliding groove (45) is arranged at the other end of the horizontal rod (2), the second sliding block (42) is slidably connected in the limiting sliding groove (45) and is pushed to slide by a pushing piece, the first sliding block (41) and the second sliding block (42) are respectively hingedly connected with one supporting rod (43), the two supporting rods (43) are hingedly connected with each other and are provided with a torsional spring, and the hinged shafts of the supporting rods (43) and the second sliding block (42) can slide out of the limiting sliding groove (45); The included angle of the two supporting rods (43) changes between 175° and 150°.

2. The metro tunnel segment rectifying device according to claim 1, characterized in that: The pushing piece comprises an arc-shaped plate (6), a plurality of arc-shaped protrusions (61) and a ejection protrusion (62) are fixedly connected to the inner wall of the arc-shaped plate (6) at intervals, the protruding height of the ejection protrusion (62) is greater than that of the arc-shaped protrusion (61), a jacking rod (63) is fixedly connected to one side of the second sliding block (42), and the jacking rod (63) corresponds to the arc-shaped protrusion (61) and the ejection protrusion (62).

3. The device for correcting metro tunnel segments according to claim 1, characterized in that: The base pipe (1) is sleeved with a cushion block (11), adjusting sliding grooves (12) are arranged on the two sides of the cushion block (11), and arc-shaped cushion plates (13) are slidably connected in the adjusting sliding grooves (12).

Images