Pipe-jacking stratum reinforcing device for water-rich stratum

Abstract

The utility model discloses a water-rich stratum pipe-jacking stratum reinforcing device which comprises a pressurizing sleeve, an end cover is connected to the outer side of the pressurizing sleeve in a sleeved mode, a threaded rod is connected to the interior of the end cover through threads, a fixed pipe is fixedly connected to the interior of the pressurizing sleeve, a movable plate, a connecting rod and other components are installed, the movable plate has the sealing performance, and the connecting rod is connected with the threaded rod in a threaded mode. During movement, gas leakage in the high-pressure gas cavity is prevented, the high-pressure gas cavity is filled with a certain amount of gas, so that the high-pressure gas cavity has certain pressure on the movable plate, the interval between the connecting rod and the fixed pipe is reduced, and slurry is prevented from entering the fixed pipe and affecting movement of the movable plate; the conical disc can move upwards to prevent the slurry from flowing back into the slurry inlet and damaging the valve, the conical disc can move upwards during slurry feeding without affecting entering of the slurry, and the conical disc can move downwards to continue to block the slurry inlet and prevent the slurry from flowing back under the action of high-pressure gas after the slurry stops entering.

Description

Technical Field

[0001] The utility model relates to the technical field of stratum reinforcement devices, in particular to a stratum reinforcement device for a top pipe in a water-rich stratum. Background Art

[0002] A pipe curtain grouting reinforcement device for water-rich strata can effectively improve the engineering properties of water-rich strata and enhance the stability and bearing capacity of the pipe jacking. At the same time, the pipe curtain grouting reinforcement technology can also reduce the disturbance and impact of groundwater on the pipe jacking, providing a safer and more stable working environment for pipe jacking construction.

[0003] The prior art provides a local pre-reinforcement device for jacking pipe construction in loose strata of gravel and pebble (Announcement No.: CN217462155U), which includes a jacking pipe head and a jacking pipe joint, wherein the end of the jacking pipe head is connected to the jacking pipe joint, and the end of the jacking pipe joint is connected to a pressurized casing, and a slurry inlet is arranged below the pressurized casing, and a control valve is arranged at the slurry inlet. The local pre-reinforcement device for jacking pipe construction in loose strata of gravel and pebble passes through the pressurized casing, wherein the external thread at the end of the jacking pipe joint and the internal thread at the front end of the pressurized casing form a threaded connection structure, and a sealing gasket is arranged at the connection between the jacking pipe joint and the pressurized casing, so that the pre-reinforcement device has good sealing performance, and a piston plate is arranged inside the pressurized casing, and a threaded rod is connected to the right surface of the piston plate, wherein the threaded rod penetrates the end cover and is connected to a turning handle, and when the turning handle rotates the threaded rod, the threaded transmission structure of the threaded rod and the end cover moves the piston plate forward, which is convenient for the pre-reinforcement device to perform grouting processing and improves work efficiency.

[0004] However, the device still has the following defects:

[0005] When the device is in use, the handle rotates the threaded rod, and the threaded transmission structure of the threaded rod and the end cover moves the piston plate forward, which is convenient for the pre-reinforcement device to perform grouting. When the piston plate moves, the pressure of the slurry increases, which makes it easy to backfill the grouting port and easily damage the valve in the grouting port. The jacking head needs to be inserted into the ground when in use, and the end in contact with the ground is easily damaged, but replacing the jacking head is troublesome and wasteful. Utility Model Content

[0006] The purpose of the utility model is to provide a device for reinforcing a water-rich formation by jacking a pipe. A conical disk is clamped at the outlet of a slurry inlet to prevent the slurry from flowing back into the slurry inlet, thereby protecting the valve in the slurry inlet. At the same time, a rubber protective sleeve is provided on the outer side of the jacking head to protect the jacking head, thereby solving the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A device for reinforcing a water-rich formation by jacking pipe, comprises a pressurized casing, an end cap is sleeved on the outer side of the pressurized casing, a screw is threadedly connected to the inside of the end cap, a turntable is fixedly connected to the end of the screw away from the pressurized casing, a slurry inlet is fixedly connected to the outer side of the pressurized casing, a backflow prevention component is arranged inside the pressurized casing to prevent the slurry from flowing back into the slurry inlet when the piston plate squeezes the slurry, a jacking joint is threadedly connected to the inside of the end of the pressurized casing away from the end cap, and a protection component for protecting the jacking machine head is arranged at the end of the jacking joint away from the pressurized casing.

[0009] Preferably, the anti-backflow assembly includes a fixed tube, the interior of the pressurized sleeve is fixedly connected to the fixed tube, a high-pressure air cavity is opened inside the fixed tube, a movable plate is slidably connected inside the high-pressure air cavity, and the lower end of the movable plate is fixedly connected to a connecting rod.

[0010] Preferably, the protection assembly includes a rubber protective sleeve, and the end of the top tube joint away from the end cover is in contact with the rubber protective sleeve, a slide groove is provided inside the rubber protective sleeve, and a clamping rod is slidably connected inside the slide groove. The inside of the top tube joint is connected with a fixing bolt through a thread, and the fixing bolt is in contact with the clamping rod.

[0011] Preferably, one end of the screw rod away from the rotating disk is connected to a piston plate via a bearing seat, and the piston plate is slidably connected to the inside of the pressurizing sleeve.

[0012] Preferably, one end of the jacking joint away from the pressurized sleeve is fixedly connected to a jacking machine head.

[0013] Preferably, one end of the connecting rod away from the movable plate is fixedly connected to a conical disk, and the conical disk is in contact with the slurry inlet.

[0014] Preferably, the clamping rod is slidably connected to the pipe jacking joint, and the clamping rod is slidably connected to the pipe jacking machine head.

[0015] Preferably, a through hole is provided inside the top tube joint, and the interior of the through hole is slidably connected to the clamping rod.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model has a fixed pipe fixedly connected in a pressurized pipe sleeve, and components such as a moving plate and a connecting rod are installed. The moving plate has sealing performance, and while moving, gas leakage inside the high-pressure air cavity is prevented. A certain amount of gas is filled inside the high-pressure air cavity, so that the high-pressure air cavity has a certain pressure on the moving plate. The interval between the connecting rod and the fixed pipe is reduced, so that slurry is prevented from entering the fixed pipe and affecting the movement of the moving plate. The conical disk is stuck at the outlet of the slurry inlet to prevent the slurry from flowing back into the slurry inlet and causing damage to the valve. When the slurry is entering, the conical disk can move upward without affecting the entry of the slurry. When the slurry stops entering, the conical disk will move downward under the action of the high-pressure gas to continue to block the slurry inlet and prevent the slurry from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 Practical Figure 2 A magnified view of area A in;

[0021] Figure 4 Practical Figure 2 Magnified view of area B in .

[0022] In the figure: 1. pressurized casing; 2. end cover; 3. screw; 4. turntable; 5. piston plate; 6. slurry inlet; 7. anti-backflow assembly; 71. fixed pipe; 72. high-pressure air chamber; 73. movable plate; 74. connecting rod; 75. conical disk; 8. jacking joint; 9. protection assembly; 91. rubber protective sleeve; 92. slide groove; 93. clamping rod; 94. fixing bolt; 95. through hole; 10. jacking head. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A stratum reinforcement device for a water-rich formation by jacking pipes comprises a pressurized casing 1, an end cap 2 is sleeved on the outer side of the pressurized casing 1, a screw 3 is threadedly connected to the inside of the end cap 2, a turntable 4 is fixedly connected to the end of the screw 3 away from the pressurized casing 1, a slurry inlet 6 is fixedly connected to the outer side of the pressurized casing 1, a backflow prevention component 7 is arranged inside the pressurized casing 1 to prevent the slurry from flowing back into the slurry inlet 6 when a piston plate 5 squeezes the slurry, a jacking joint 8 is threadedly connected to the inside of the end of the pressurized casing 1 away from the end cap 2, and a protection component 9 for protecting a jacking machine head 10 is arranged on the end of the jacking joint 8 away from the pressurized casing 1.

[0026] The backflow prevention assembly 7 includes a fixed tube 71, the fixed tube 71 is fixedly connected to the inside of the pressurized sleeve 1, a high-pressure air cavity 72 is opened inside the fixed tube 71, a movable plate 73 is slidably connected to the inside of the high-pressure air cavity 72, and a connecting rod 74 is fixedly connected to the lower end of the movable plate 73.

[0027] The protection assembly 9 includes a rubber protective sleeve 91, and the end of the top tube joint 8 away from the end cover 2 is in contact with the rubber protective sleeve 91. A slide groove 92 is provided inside the rubber protective sleeve 91, and a clamping rod 93 is slidably connected inside the slide groove 92. A fixing bolt 94 is threadedly connected inside the top tube joint 8, and the fixing bolt 94 is in contact with the clamping rod 93.

[0028] One end of the screw rod 3 away from the rotating disk 4 is connected to a piston plate 5 through a bearing seat, and the piston plate 5 is slidably connected to the inside of the pressurizing sleeve 1 .

[0029] One end of the jacking joint 8 away from the pressurized casing 1 is fixedly connected with a jacking machine head 10; through the design of the jacking joint 8, horizontal grouting pipe openings are evenly distributed on the surface of the jacking joint 8, which facilitates more uniform grouting during the grouting process.

[0030] One end of the connecting rod 74 away from the movable plate 73 is fixedly connected with a conical disk 75, and the conical disk 75 is in contact with the slurry inlet 6; through the design of the conical disk 75, the conical disk 75 blocks the slurry inlet 6 to prevent the slurry from flowing back.

[0031] The clamping rod 93 is slidably connected to the jacking joint 8, and the clamping rod 93 is slidably connected to the jacking machine head 10; through the design of the clamping rod 93, the part of the clamping rod 93 that slides in the slide groove 92 can play a buckling role on the slide groove 92 to prevent the rubber protective cover 91 from falling off.

[0032] A through hole 95 is provided inside the top tube joint 8, and the interior of the through hole 95 is slidably connected to the clamping rod 93; through the design of the through hole 95, the clamping rod 93 moves in the through hole 95, and the movement of the clamping rod 93 can be manually controlled through the through hole 95.

[0033] Working principle: When the utility model is used, the pressurized sleeve 1 is installed at the end of the jacking joint 8, and a sealing ring is provided at the connection between the jacking joint 8 and the pressurized sleeve 1 to prevent leakage between the pressurized sleeve 1 and the jacking joint 8 when the reinforcement device is in use. The turntable 4 is rotated, and the turntable 4 drives the screw 3 to rotate, and the screw 3 drives the piston plate 5 to move to the side of the end cover 2. The jacking head 10 and the jacking joint 8 penetrate the jacking through the formation, and the external pipe is inserted into the slurry port 6 for grouting. After the grouting is completed, the turntable 4 is rotated in the direction, and the screw 3 drives the piston plate 5 to move to the side away from the end cover 2. Under the action of the piston plate 5, the slurry is grouted into the formation through the horizontal grouting port on the surface of the jacking joint 8. The surface of the jacking joint 8 is evenly distributed with horizontal grouting ports, which is convenient for more uniform grouting process;

[0034] During grouting, the slurry enters the pressurized casing 1 through the slurry inlet 6, the slurry squeezes the conical disk 75, the conical disk 75 is subjected to force, and squeezes the connecting rod 74, and the connecting rod 74 transmits the force to the movable plate 73. When the force is large enough, the gas in the high-pressure gas chamber 72 is compressed, the movable plate 73, the connecting rod 74 and the conical disk 75 move upward, and the slurry enters the pressurized casing 1. After passing through the pressurized casing 1, it enters the top pipe joint 8. After the grouting is completed, the pressure of the slurry in the slurry inlet 6 is small, and tends to be the same as the pressure of the slurry in the pressurized casing 1. The pressure of the conical disk 75 decreases, and the pressure of the slurry in the pressurized casing 1 is reduced. The force transmitted to the movable plate 73 through the connecting rod 74 decreases, the pressure of the movable plate 73 on the high-pressure gas decreases, the high-pressure gas inside the high-pressure gas chamber 72 begins to reduce the pressure, the movable plate 73 begins to move downward, and the connecting rod 74 and the conical disk 75 move downward accordingly until the conical disk 75 is stuck on the upper end surface of the slurry inlet 6. The conical disk 75 seals the slurry inlet 6. When the turntable 4 controls the movement of the piston plate 5 through the screw 3 to perform grouting, the slurry inside the pressurized casing 1 is prevented from flowing back into the slurry inlet 6. At this time, the slurry pressure is relatively large. When flowing back, the valve provided in the slurry inlet 6 is easily damaged.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water-rich stratum top pipe reinforcement device, characterized in that: include: A pressurized sleeve (1), wherein an end cover (2) is sleeved on the outer side of the pressurized sleeve (1), a screw rod (3) is threadedly connected to the interior of the end cover (2), and a rotating disk (4) is fixedly connected to one end of the screw rod (3) away from the pressurized sleeve (1); A slurry inlet (6) is fixedly connected to the outside of the pressurizing sleeve (1), and a backflow prevention component (7) is arranged inside the pressurizing sleeve (1) to prevent the slurry from flowing back into the slurry inlet (6) when the piston plate (5) squeezes the slurry; The interior of the end of the pressurized sleeve (1) away from the end cover (2) is connected to a pipe jacking joint (8) via a thread, and the end of the pipe jacking joint (8) away from the pressurized sleeve (1) is provided with a protective component (9) for protecting the pipe jacking machine head (10).

2. A water-rich formation top pipe reinforcement device according to claim 1, characterized in that: The backflow prevention assembly (7) comprises a fixed tube (71), the interior of the pressurized sleeve (1) is fixedly connected to the fixed tube (71), a high-pressure air cavity (72) is provided inside the fixed tube (71), a movable plate (73) is slidably connected inside the high-pressure air cavity (72), and a connecting rod (74) is fixedly connected to the lower end of the movable plate (73).

3. The water-rich stratum top pipe reinforcement device according to claim 1, characterized in that: The protection assembly (9) comprises a rubber protective sleeve (91), one end of the top tube joint (8) away from the end cover (2) contacts with the rubber protective sleeve (91), a slide groove (92) is provided inside the rubber protective sleeve (91), a clamping rod (93) is slidably connected inside the slide groove (92), a fixing bolt (94) is threadedly connected inside the top tube joint (8), and the fixing bolt (94) contacts with the clamping rod (93).

4. The water-rich stratum top pipe reinforcement device according to claim 1, characterized in that: One end of the screw rod (3) away from the rotating disk (4) is connected to a piston plate (5) via a bearing seat, and the piston plate (5) is slidably connected to the inside of the pressurizing sleeve (1).

5. The water-rich stratum top pipe reinforcement device according to claim 1, characterized in that: One end of the jacking joint (8) away from the pressurized sleeve (1) is fixedly connected to a jacking machine head (10).

6. The device for reinforcing a water-rich formation by jacking pipe according to claim 2, characterized in that: One end of the connecting rod (74) away from the movable plate (73) is fixedly connected to a conical disk (75), and the conical disk (75) is in contact with the pulp inlet (6).

7. The water-rich stratum top pipe reinforcement device according to claim 3, characterized in that: The clamping rod (93) is slidably connected to the pipe jacking joint (8), and the clamping rod (93) is slidably connected to the pipe jacking machine head (10).

8. The water-rich stratum top pipe reinforcement device according to claim 3, characterized in that: A through hole (95) is provided inside the top pipe joint (8), and the interior of the through hole (95) is slidably connected to the clamping rod (93).

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