Grouting device for shield tunneling through karst area earth surface large hole

Abstract

The utility model relates to the technical field of shield grouting, in particular to a shield penetrating karst area earth surface large hole grouting device which comprises a protective pipe and a grouting pipe, the outer surface of the protective pipe is sleeved with a supporting sleeve, the outer surface of the supporting sleeve is fixedly connected with a movable seat, the surface of the movable seat is movably connected with a supporting rod, and the supporting rod is fixedly connected with the grouting pipe. The surface of the supporting sleeve is fixedly connected with a clamping plate, and the outer surface of the clamping plate is sleeved with a threaded ring. Through the connection of the supporting sleeve and the clamping plate and the connection of the clamping plate and the threaded ring, the control operation of abutting of the clamping plate on the protection pipe is completed, the effect of adjusting and controlling the position of the supporting sleeve on the protection pipe is achieved, and the use performance and effect of the protection pipe are improved; the effect of elastically controlling the connecting angle of the rubber plate on the fixing block is achieved, it is guaranteed that the rubber plate tightly abuts against the surface of the grouting pipe when not subjected to grouting pressure, and the using effect of the rubber plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield grouting, in particular to a large-hole grouting device for the surface of a shield tunneling through a karst area. Background Technique

[0002] Grouting refers to a construction method in which specific slurry or concrete is injected into rock and soil to change the physical and mechanical properties of the soil, so as to achieve the effects of reinforcement, densification, anti-seepage, anti-collapse, etc. Especially when grouting in karst caves in the karst area of a shield, it can improve the shield efficiency and safety performance. However, when using the existing grouting pipe, there is no position support mechanism on the grouting pipe, and the action length of the grouting pipe cannot be controlled. Moreover, there is no baffle mechanism at the slurry outlet of the grouting pipe, and during the grouting process, the situation of backflow is likely to occur. Content of the Utility Model

[0003] The purpose of the utility model is to provide a large-hole grouting device for the surface of a shield tunneling through a karst area, so as to solve the problems put forward in the above background technique that there is no position support mechanism on the grouting pipe, the action length of the grouting pipe cannot be controlled, and there is no baffle mechanism at the slurry outlet of the grouting pipe, and the situation of backflow is likely to occur during the grouting process.

[0004] To achieve the above purpose, the utility model provides the following technical solution. A large-hole grouting device for the surface of a shield tunneling through a karst area includes a protection pipe and a grouting pipe. A support sleeve is sleeved on the outer surface of the protection pipe. A movable seat is fixedly connected to the outer surface of the support sleeve. A support rod is movably connected to the surface of the movable seat. A clamping plate is fixedly connected to the surface of the support sleeve. A screw ring is sleeved on the outer surface of the clamping plate. A rubber sleeve is sleeved on the outer surface of the grouting pipe. A slurry outlet is opened on the surface of the grouting pipe. A fixing block is fixedly connected to the inner side of the slurry outlet. A rubber plate is connected to the surface of the fixing block. A connecting block is fixedly connected to the surface of the rubber plate. A support block is fixedly connected to the surface of the fixing block. A sleeve is fixedly connected to the surface of the support block. A telescopic cylinder is fixedly connected to the surface of the connecting block. A tension spring is fixedly connected to the surface of the support block.

[0005] Preferably, the support sleeve is in a circular ring shape. Three groups of movable seats are distributed on the outer surface of the support sleeve. The support rod is movably connected to the support sleeve through the movable seat.

[0006] Preferably, one end of the support rod close to the movable seat is fixedly connected with a screw rod, and the screw rod passes through the surface of the movable seat and is connected with a screw sleeve.

[0007] Preferably, the outer surface of the clamping plate is inclined. The screw ring is sleeved on the clamping plate through a thread. The grouting pipe is sleeved on the protection pipe through the rubber sleeve.

[0008] Preferably, the curvature of the fixed block is the same as that of the grouting pipe. The fixed block is fixed at the middle position of the slurry outlet. The rubber plates are distributed in two groups on both sides of the fixed block, and the rubber plates act on the slurry outlet through the fixed block.

[0009] Preferably, the connecting block is plate-shaped and fixedly connected to the rubber plate. The cross-section of the support block is in an "L" shape, and the two groups of support blocks are symmetrically distributed on the same side surface of the fixed block.

[0010] Preferably, the telescopic cylinder is sleeved inside the sleeve. The two ends of the tension spring are fixedly connected to the surfaces of the support block and the connecting block, and the tension spring acts inside the sleeve and the telescopic cylinder.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. Through the connection of the protective pipe and the support sleeve, under the connection of the support sleeve and the movable seat, and with the action of the screw and nut on the support rod, the control effect of the connection angle of the support rod on the movable seat is achieved. Under the action of the support rod, the support effect on the use position of the protective pipe is realized. Through the connection of the support sleeve and the clamping plate, and under the connection of the clamping plate and the screw ring, the control operation of the clamping plate against the protective pipe is completed, achieving the regulation effect of the position of the support sleeve on the protective pipe, and improving the use performance and effect of the protective pipe.

[0013] 2. Through the connection of the fixed block and the slurry outlet, under the connection of the fixed block and the rubber plate, the blocking effect on the slurry outlet is achieved, avoiding the backflow of the slurry and the entry of sundries. Under the connection of the support block and the sleeve, and the connection of the connecting block and the telescopic cylinder, through the sleeving of the sleeve and the telescopic cylinder, and under the action of the tension spring, the elastic control effect of the connection angle of the rubber plate on the fixed block is realized, ensuring the tight fit of the rubber plate on the surface of the grouting pipe when not under grouting pressure, and improving its use effect. Description of the Drawings

[0014] Figure 1 is the engineering schematic diagram of the present utility model;

[0015] Figure 2 is the three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 3 is the three-dimensional structure storage schematic diagram of the present utility model;

[0017] Figure 4 is the three-dimensional sectional structure schematic diagram of the present utility model;

[0018] Figure 5 is the three-dimensional structure schematic diagram of the support sleeve of the present utility model;

[0019] Figure 6This is a partial sectional three-dimensional schematic diagram of the structure of the grouting pipe of the present utility model;

[0020] Figure 7 For the present utility model Figure 6 An enlarged schematic diagram of the structure at position A in it.

[0021] In the figure: 1. Protective pipe; 2. Support sleeve; 21. Support rod; 22. Movable seat; 23. Clamping plate; 24. Screw ring; 3. Grouting pipe; 31. Rubber sleeve; 4. Fixed block; 41. Grout outlet; 42. Rubber plate; 43. Connecting block; 44. Support block; 45. Sleeve; 46. Telescopic cylinder; 47. Tension spring. Specific embodiments

[0022] Please refer to Figures 1-7 , an embodiment provided by the present utility model:

[0023] A large-hole grouting device on the ground surface for a shield tunneling through a karst area includes a protective pipe 1 and a grouting pipe 3. A support sleeve 2 is sleeved on the outer surface of the protective pipe 1. A movable seat 22 is fixedly connected to the outer surface of the support sleeve 2. A support rod 21 is movably connected to the surface of the movable seat 22. A clamping plate 23 is fixedly connected to the surface of the support sleeve 2. A screw ring 24 is sleeved on the outer surface of the clamping plate 23. A rubber sleeve 31 is sleeved on the outer surface of the grouting pipe 3. A grout outlet 41 is formed on the surface of the grouting pipe 3. A fixed block 4 is fixedly connected to the inner side of the grout outlet 41. A rubber plate 42 is connected to the surface of the fixed block 4. A connecting block 43 is fixedly connected to the surface of the rubber plate 42. A support block 44 is fixedly connected to the surface of the fixed block 4. A sleeve 45 is fixedly connected to the surface of the support block 44. A telescopic cylinder 46 is fixedly connected to the surface of the connecting block 43. A tension spring 47 is fixedly connected to the surface of the support block 44. Through the connection between the protective pipe 1 and the support sleeve 2, under the connection between the support sleeve 2 and the clamping plate 23, and through the connection between the screw ring 24 and the clamping plate 23, the effect of adjusting the position of the support sleeve 2 on the protective pipe 1 is achieved.

[0024] Furthermore, the support sleeve 2 is in a circular ring shape. Three groups of movable seats 22 are distributed on the outer surface of the support sleeve 2. The support rod 21 is movably connected to the support sleeve 2 through the movable seat 22. Through the connection between the support sleeve 2 and the movable seat 22, under the action of the movable seat 22, the connection and support effect of the support rod 21 on the support sleeve 2 is achieved.

[0025] Furthermore, one end of the support rod 21 close to the movable seat 22 is fixedly connected with a screw rod, and the screw rod penetrates through the surface of the movable seat 22 and is connected with a screw sleeve. Through the screw rod connected to the support rod 21, under the action of the screw rod and the screw sleeve, the effect of adjusting and supporting the connection angle of the support rod 21 on the support sleeve 2 is achieved.

[0026] Further, the outer surface of the clamping plate 23 is inclined. The spiral ring 24 is sleeved on the clamping plate 23 through threads. The grouting pipe 3 is sleeved on the protective pipe 1 through the rubber sleeve 31. Through the connection of the clamping plate 23 and the spiral ring 24, under the action of the spiral ring 24, a tight abutting effect between the clamping plate 23 and the protective pipe 1 is achieved, completing the adjustment operation of the acting position of the support sleeve 2 on the protective pipe 1. Under the connection of the rubber sleeve 31 and the grouting pipe 3, the rubber sleeve 31 abuts and contacts the inside of the protective pipe 1, achieving the supporting effect on the position of the grouting pipe 3 inside the protective pipe 1.

[0027] Further, the curvature of the fixed block 4 is the same as that of the grouting pipe 3. The fixed block 4 is fixed at the middle position of the slurry outlet 41. The rubber plates 42 are distributed in two groups on both sides of the fixed block 4. The rubber plates 42 act on the position of the slurry outlet 41 through the fixed block 4. Through the connection of the fixed block 4 and the slurry outlet 41, under the connection of the fixed block 4 and the rubber plates 42, the blocking control operation of the channel of the slurry outlet 41 is completed.

[0028] Further, the connecting block 43 is plate-shaped and fixedly connected to the rubber plate 42. The cross-section of the support block 44 is in the shape of an "L". The support blocks 44 are symmetrically distributed in two groups on the same side surface of the fixed block 4. Through the connection of the rubber plate 42 and the connecting block 43, under the connection of the rubber plate 42 and the connecting block 43, through the connection of the support block 44 and the fixed block 4, the control effect on the connecting angle of the rubber plate 42 on the fixed block 4 is achieved.

[0029] Further, the telescopic cylinder 46 is sleeved inside the sleeve 45. The two ends of the tension spring 47 are fixedly connected to the surfaces of the support block 44 and the connecting block 43. The tension spring 47 acts inside the sleeve 45 and the telescopic cylinder 46. Under the connection of the sleeve 45 and the support block 44, and the connection of the connecting block 43 and the telescopic cylinder 46, through the action of the tension spring 47, the elastic control effect on the acting angle of the rubber plate 42 is achieved. Under the action of the sleeve 45 and the telescopic cylinder 46, the protective effect on the tension spring 47 is achieved, avoiding direct contact between the slurry and the tension spring 47.

[0030] Working principle: When performing grouting operation for karst caves in a karst area, through the connection of the protective pipe 1 and the grouting pipe 3, under the action of the rubber sleeve 31, the grouting pipe 3 is placed inside the protective pipe 1. Under the action of the grouting pipe 3, the grouting effect is achieved. Through the connection of the support sleeve 2 and the movable seat 22, and the rotational connection of the movable seat 22 and the support rod 21, under the action of the support rod 21, the support effect for the use of the protective pipe 1 is realized. Under the connection of the screw ring 24 and the clamping plate 23, the position of the support sleeve 2 on the protective pipe 1 can be controlled, achieving the control effect on the use position of the protective pipe 1. Under the connection of the fixed block 4 and the slurry outlet 41, through the connection of the slurry outlet 41 and the rubber plate 42, and the connection of the rubber plate 42 and the connecting block 43, through the action of the sleeve 45 and the telescopic cylinder 46, under the connection of the tension spring 47 and the support block 44, the elastic control of the connection angle of the rubber plate 42 on the fixed block 4 is realized, improving the partition control effect of the rubber plate 42 on the slurry outlet 41 channel.

Claims

1. A large-hole grouting device on the ground for a shield tunneling through a karst area, comprising a protective pipe and a grouting pipe, characterized in that: A support sleeve is sleeved on the outer surface of the protection tube. A movable seat is fixedly connected to the outer surface of the support sleeve. A support rod is movably connected to the surface of the movable seat. A clamping plate is fixedly connected to the surface of the support sleeve. A screw ring is sleeved on the outer surface of the clamping plate. A rubber sleeve is sleeved on the outer surface of the grouting pipe. A slurry outlet is formed in the surface of the grouting pipe. A fixing block is fixedly connected to the inner side of the slurry outlet. A rubber plate is connected to the surface of the fixing block. A connecting block is fixedly connected to the surface of the rubber plate. A support block is fixedly connected to the surface of the fixing block. A sleeve is fixedly connected to the surface of the support block. A telescopic cylinder is fixedly connected to the surface of the connecting block. A tension spring is fixedly connected to the surface of the support block.

2. The large-hole grouting device for the shield tunneling through the karst area surface according to claim 1, wherein: The support sleeve is in a circular ring shape. Three groups of movable seats are distributed on the outer surface of the support sleeve. The support rod is movably connected to the support sleeve through the movable seat.

3. The grouting device for large holes on the ground during shield tunneling through karst areas according to claim 1, wherein: One end of the support rod close to the movable seat is fixedly connected with a screw rod, and the screw rod passes through the surface of the movable seat and is connected with a screw sleeve.

4. A large-hole grouting device on the ground for shield tunneling through karst areas according to claim 1, characterized in that: The outer surface of the clamping plate is inclined. The screw ring is sleeved on the clamping plate through threads. The grouting pipe is sleeved on the protection tube through the rubber sleeve.

5. The large-hole grouting device for the shield tunneling through the karst area surface according to claim 1, wherein: The curvature of the fixing block is consistent with that of the grouting pipe. The fixing block is fixed at the middle position of the slurry outlet. Two groups of rubber plates are distributed on both sides of the fixing block. The rubber plates act on the position of the slurry outlet through the fixing block.

6. The grouting device for large holes on the ground during shield tunneling through karst areas according to claim 1, characterized in that: The connecting block is in a plate shape and is fixedly connected to the rubber plate. The cross section of the support block is in an "L" shape. Two groups of support blocks are symmetrically distributed on the same side surface of the fixing block.

7. A large-hole grouting device for the ground surface during shield tunneling through a karst area according to claim 1, characterized in that: The telescopic cylinder is sleeved inside the sleeve. Both ends of the tension spring are fixedly connected to the surfaces of the support block and the connecting block. The tension spring acts inside the sleeve and the telescopic cylinder.

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