A grouting device with opening / closing and pressing functions

Abstract

The present invention discloses a grouting device with opening and closing and pressing functions, which includes a mud pipe, a grouting channel formed inside the mud pipe, the front end of the grouting channel being close to the grouting outlet end, and the other end being the rear end. The device also includes a cleaning mechanism that can be passed into the mud pipe to cut off the grouting channel and flush the grouting channel between the cutoff point and the rear end. The grouting channel is equipped with a cleaning mechanism. After grouting is completed, the driving component drives the plunger to extend, closing the grouting pipeline. At the same time, water is injected into the cleaning channel through the water receiving pipe to reversely flush the grouting pipeline. At the same time, the front end of the plunger cleans the cutoff point and the outlet end of the mud pipe by squeezing and pushing. A pressure sensor is integrated on the pressure plate. The pressing cylinder drives the injection block to slide back and forth to control the pressure and improve the grouting quality. Different concretes can be injected for construction when the shield machine is excavating in different strata to ensure the strength of the injection ring. The use of steel formwork greatly reduces the construction cost.

Description

Technical Field

[0001] The invention belongs to the field of shield machine equipment, and in particular relates to a grouting device with opening, closing and pressing functions. Background Art

[0002] The current synchronous grouting is injected directly through the grouting pipeline, without cleaning pipelines and compression blocks. Concrete segments must be used for synchronous grouting, and the segments cannot be removed. The grouting quality is poor due to the inability to compact during grouting, and sometimes secondary grouting is required. Summary of the Invention

[0003] The purpose of the present invention is to provide a grouting device with opening, closing and pressing functions, which can ensure the molding quality of concrete, can be constructed with steel pipe segments, and can be removed in the later stage, with low construction cost.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a grouting device with opening, closing and pressing functions, which includes a mud pipe, a grouting channel is formed inside the mud pipe, the front end of the grouting channel is close to the grouting outlet end, and the other end is the rear end. It also includes a cleaning mechanism that can pass into the mud pipe to cut off the grouting channel and flush the grouting channel between the cut-off point and the rear end.

[0005] Optimized, the mud pipe includes a main grouting pipe, an auxiliary grouting pipe, and a transition pipe connected between the main grouting pipe and the auxiliary grouting pipe, the auxiliary grouting pipe is coaxially and sealedly connected to the transition pipe, the cleaning mechanism includes a plunger sleeve coaxially and in communication with the transition pipe, a plunger slidably connected in the plunger sleeve and the transition pipe and the auxiliary grouting pipe, and a drive assembly connected to the plunger for pushing the plunger into or pulling it out of the transition pipe, and the outer diameter of the plunger is the same as the inner diameter of the transition pipe.

[0006] Furthermore, the driving assembly includes a push rod with one end coaxially fixedly connected to the plunger, and an opening and closing cylinder with a piston rod connected to the other end of the push rod.

[0007] Furthermore, a water connection pipe is provided on the plunger sleeve, and the outer diameter of the push rod is smaller than the inner diameter of the plunger sleeve, and a cleaning flow channel is formed between the push rod and the plunger sleeve, connecting the water connection pipe and the cutoff point to the rear end of the grouting channel.

[0008] Furthermore, the push rod includes an inner push rod and an outer push rod sleeved on the inner push rod, the right end of the inner push rod extends out of the outer push rod, the plunger includes a plunger body sleeved on the inner push rod and the left end connected to the outer push rod, the right end of the inner push rod is receivable in the plunger body, the plunger also includes a plunger joint whose left end is threadedly connected to the right end of the inner push rod and is simultaneously inserted into the right end of the plunger body, an annular gasket sleeved on the left end of the plunger joint, and a plunger push head fixed on the right end surface of the plunger joint and arranged close to the annular gasket.

[0009] Furthermore, a plurality of sealing installation grooves are provided on the peripheral surface of the plunger joint, and a sealing member is provided in each of the sealing installation grooves.

[0010] Furthermore, a frustoconical clamping groove is provided on the right end face of the annular gasket, and the left end of the plunger push head forms a frustoconical clamping section matching the clamping groove. The plunger push head is fixedly connected to the plunger joint by a countersunk screw and is pressed onto the annular gasket.

[0011] Furthermore, the cylinder body of the opening and closing oil cylinder is sealedly connected to the plunger sleeve.

[0012] Furthermore, the transition pipe includes a transition main pipe connected between the plunger sleeve and the auxiliary grouting pipe and coaxially arranged with the two, a transition sleeve fixedly sleeved on the transition main pipe, and a connected middle section mud inlet is provided on the transition main pipe and the transition sleeve. The main grouting pipe includes a straight pipe section arranged parallel to the auxiliary grouting pipe, a curved pipe section connected to the straight pipe section, and an inclined pipe section connected between the curved pipe section and the middle section mud inlet. The inclined pipe section is inclined to the transition pipe, and the angle formed between it and the auxiliary grouting pipe is greater than 90°.

[0013] Optimally, the grouting device also includes a pressure plate, a compression cylinder for compressing the pressure plate during grouting, and a pressure sensor installed on the pressure plate for sensing the slurry pressure in the grouting space. The mud pipe and the cleaning mechanism are both installed on the pressure plate.

[0014] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: a cleaning mechanism is installed on the grouting channel, and after grouting is completed, the driving assembly drives the plunger to extend, closing the grouting pipeline and injecting water at the same time. The cleaning flow channel is injected from the water receiving pipe to reversely flush the grouting pipeline. At the same time, the front end of the plunger cleans the cut-off point and the outlet end of the mud pipe by squeezing and pushing. A pressure sensor is integrated on the pressure plate, and the clamping cylinder drives the injection block to slide back and forth to control the pressure and improve the grouting quality. Different concretes can be injected for construction when the shield machine is excavating in different strata to ensure the strength of the injection ring, and the use of steel formwork construction greatly reduces the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of the present invention;

[0016] Figure 2 A top view of the present invention;

[0017] Figure 3 for Figure 1 A magnified view of . DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0019] like Figure 1 、 2 As shown, the grouting device with opening, closing and pressing functions includes a pressing plate 0, a mud pipe 2, a cleaning mechanism 1, a pressing cylinder 3 for pressing the pressing plate 0 during grouting, and a pressure sensor 4 installed on the pressing plate 0 for sensing the pressure of the slurry in the grouting space exerted by the pressing plate 0. The mud pipe 2 and the cleaning mechanism 1 are both installed on the pressing plate 0. A grouting channel is formed inside the mud pipe 2, with the front end of the grouting channel being close to the grouting outlet and the other end being the rear end. The cleaning mechanism 1 can pass into the mud pipe 2, cut off the grouting channel, and flush the grouting channel between the cutoff point and the rear end.

[0020] The slurry pipe 2 includes a main grouting pipe 21, an auxiliary grouting pipe 22, and a transition pipe 23 connected between the main and auxiliary grouting pipes 21 and 22. The auxiliary grouting pipe 22 is coaxially and sealedly connected to the transition pipe 23. The cleaning mechanism 1 includes a plunger sleeve 24 coaxially connected to and in communication with the transition pipe 23, a plunger 5 slidably connected within the plunger sleeve 24 and within the transition pipe 23 and the auxiliary grouting pipe 22, and a drive assembly connected to the plunger 5 for pushing or pulling the plunger 5 into or out of the transition pipe 23. The outer diameter of the plunger 5 is the same as the inner diameter of the transition pipe 23. The drive assembly includes a push rod 26, one end of which is coaxially and fixedly connected to the plunger 5, and an on-off cylinder 27, the other end of which is connected to the piston rod 26. A water inlet pipe 28 is provided on the plunger sleeve 24. The outer diameter of the push rod 26 is smaller than the inner diameter of the plunger sleeve 24. A cleaning channel 29 is formed between the push rod 26 and the plunger sleeve 24, connecting the water inlet pipe 28 and the grouting channel from the cutoff point to the rear end. The push rod 26 includes an inner push rod 261 and an outer push rod 262 sleeved on the inner push rod 261 . The right end of the inner push rod 261 extends out of the outer push rod 262 .

[0021] The plunger 5 includes a plunger body 51 that is sleeved on the inner push rod 261 and has its left end connected to the outer push rod 262. The right end of the inner push rod 261 is received in the plunger body 51. The plunger 5 also includes a plunger joint 52 whose left end is threadedly connected to the right end of the inner push rod 261 and is inserted into the right end of the plunger body 51; an annular spacer 53 that sleeves on the left end of the plunger joint 52; and a plunger push head 57 that is fixed to the right end surface of the plunger joint 52 and is closely mounted on the annular spacer 53. A plurality of sealing mounting grooves 54 are formed on the circumference of the plunger joint 52, each of which is provided with a sealing member 55. The sealing member 55 may be an O-ring or a sealing ring with a square cross-section. A truncated cone-shaped pressing groove 56 is provided on the right end surface of the annular spacer 53. The left end of the plunger push head 57 forms a truncated cone-shaped pressing section that matches the pressing groove 56. The plunger push head 57 is fixedly connected to the plunger joint 52 by a countersunk screw 58 provided on the right end surface and is pressed against the annular spacer 53. The cylinder body 271 of the opening and closing cylinder 27 is sealed to the plunger sleeve 24.

[0022] The transition pipe 23 includes a transition main pipe 231 connected between the plunger sleeve 24 and the auxiliary grouting pipe 22 and coaxially arranged with the two, a transition sleeve 232 fixedly sleeved on the transition main pipe 231, and a connected middle mud inlet 233 is provided on the transition main pipe 231 and the transition sleeve 232. The main grouting pipe 21 includes a straight pipe section 211 arranged parallel to the auxiliary grouting pipe 22, a curved pipe section 212 connected to the straight pipe section 211, and an inclined pipe section 213 connected between the curved pipe section 212 and the middle mud inlet 233. The inclined pipe section 213 is inclined to the transition pipe 23, and the angle formed between it and the auxiliary grouting pipe 22 is greater than 90°. A locking plate 214 is fixed on the inclined pipe section 213, and the locking plate 214 is connected to the transition sleeve 232 by a screw 215.

[0023] The working principle of the present invention is as follows:

[0024] The grouting channel is equipped with a cleaning mechanism. After grouting is completed, the driving component drives the plunger to extend, closing the front end of the grouting pipeline and injecting water at the same time. The cleaning flow channel is injected from the water receiving pipe, and then the grouting pipeline behind the cutoff is reversely flushed through the transition main pipe, the middle mud inlet, and the inclined pipe section. At the same time, the front end of the plunger cleans the cutoff and the outlet end of the mud pipe by squeezing and pushing. A pressure sensor is integrated on the pressure plate. The thrust of the oil cylinder 3 is adjusted according to the feedback value of the pressure sensor. The compression cylinder drives the injection block to slide back and forth to keep the pressure in the grouting space stable.

[0025] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A grouting device with opening, closing and pressing functions, comprising a slurry pipe, a grouting channel formed inside the slurry pipe, the outlet end of the grouting channel being the front end of the grouting channel, and the other end being the rear end, characterized in that: It also includes a cleaning mechanism that can be passed into the mud pipe to cut off the grouting channel and flush the grouting channel between the cutoff point and the rear end; the mud pipe includes a main grouting pipe, an auxiliary grouting pipe, and a transition pipe connected between the main grouting pipe and the auxiliary grouting pipe, the auxiliary grouting pipe is coaxially and sealedly connected to the transition pipe, the cleaning mechanism includes a plunger sleeve that is coaxial with and connected to the transition pipe, a plunger that is slidably connected to the plunger sleeve and the transition pipe and the auxiliary grouting pipe, and a drive assembly connected to the plunger for pushing the plunger into or pulling out of the transition pipe, the outer diameter of the plunger is the same as the inner diameter of the transition pipe; the drive assembly includes a push rod with one end coaxially fixedly connected to the plunger, and an opening and closing oil cylinder with a piston rod connected to the other end of the push rod; the The plunger sleeve is provided with a water connecting pipe, the outer diameter of the push rod is smaller than the inner diameter of the plunger sleeve, and a cleaning flow channel for connecting the water connecting pipe and the cut-off point to the rear end of the grouting channel is formed between the push rod and the plunger sleeve; the push rod includes an inner push rod and an outer push rod sleeved on the inner push rod, the right end of the inner push rod extends out of the outer push rod, and the plunger includes a plunger body sleeved on the inner push rod and connected to the outer push rod at the left end, the right end of the inner push rod is received in the plunger body, and the plunger also includes a plunger joint with a left end threadedly connected to the right end of the inner push rod and inserted into the right end of the plunger body at the same time, an annular gasket sleeved on the left end of the plunger joint, and a plunger push head fixed to the right end surface of the plunger joint and arranged close to the annular gasket; A truncated cone-shaped clamping groove is provided on the right end face of the annular gasket, and a truncated cone-shaped clamping section matching the clamping groove is formed at the left end of the plunger push head. The plunger push head is fixedly connected to the plunger joint by a countersunk screw and is clamped on the annular gasket.

2. The grouting device with opening, closing and pressing functions according to claim 1, characterized in that: A plurality of sealing installation grooves are provided on the peripheral surface of the plunger joint, and a sealing member is provided in each of the sealing installation grooves.

3. The grouting device with opening, closing and pressing functions according to claim 1, characterized in that: The cylinder body of the opening and closing oil cylinder is sealed with the plunger sleeve.

4. The grouting device with opening, closing and pressing functions according to claim 1, characterized in that: The transition pipe includes a transition main pipe connected between the plunger sleeve and the auxiliary grouting pipe and coaxially arranged with the two, and a transition sleeve fixedly sleeved on the transition main pipe. A connected middle section mud inlet is provided on the transition main pipe and the transition sleeve. The main grouting pipe includes a straight pipe section arranged parallel to the auxiliary grouting pipe, a curved pipe section connected to the straight pipe section, and an inclined pipe section connected between the curved pipe section and the middle section mud inlet. The inclined pipe section is inclined to the transition pipe, and the angle formed between it and the auxiliary grouting pipe is greater than 90°. A locking plate is provided on the inclined pipe section, and the locking plate is connected to the transition sleeve by screws.

5. The grouting device with opening, closing and pressing functions according to claim 1, characterized in that: The grouting device also includes a pressing plate, a pressing cylinder for pressing the pressing plate during grouting, and a pressure sensor installed on the pressing plate for sensing the slurry pressure in the grouting space. The mud pipe and the cleaning mechanism are both installed on the pressing plate.

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