CN114962782B - Grouting equipment for pipe jacking construction - Google Patents

Abstract

The utility model relates to grouting equipment for pipe jacking construction, which comprises a grouting pipe, a grouting pump arranged on the grouting pipe, a plugging piece, a grouting pipe and a grouting pipe, wherein one end of the grouting pipe is used for feeding, and the other end of the grouting pipe is used for extending into a grouting hole; the mounting piece can be used for mounting the grouting pipe at the grouting hole; the sealing piece comprises a sealing plate, a sealing gasket, a rotating plate and a torsion spring, and the sealing gasket is coaxially arranged on the peripheral side wall of the sealing plate; the sealing plate is provided with an opening for the grouting pipe to penetrate, and the rotating plate is hinged to one side of the sealing plate close to soil and can be covered on the opening; the torsional spring sets up on the articulated shaft of commentaries on classics board, and can make the commentaries on classics board tightly support on the closing plate. The present application has the effect of reducing slurry overflow from the grouting holes.

Description

Grouting equipment for pipe jacking construction

Technical Field

The application relates to the field of pipe jacking construction equipment, in particular to grouting equipment for pipe jacking construction.

Background

The pipe jacking construction is a non-excavation construction method, and is a pipeline burying construction method with little excavation or no excavation, pipeline burying is carried out between two inspection wells, the ground does not need to be excavated, a nose at the front end of the pipe jacking is used for excavating soil, the nose is tightly propped against the nose and the thrust force between a main jacking cylinder and a relay among pipelines is used for enabling the nose to continuously excavate, the friction force between the pipelines and surrounding soil is overcome, the pipelines are jacked into the soil according to the designed gradient, the excavated earthwork is conveyed out along the pipe jacking, after one section of pipe is jacked into the soil layer, a second section of pipe is jacked continuously, and the construction method for laying underground pipelines in a non-excavation mode is realized.

When the distance between inspection wells is too long and the pipe diameter is too large, grouting is carried out between the outer side of the pipeline and soil, the thixotropic slurry sleeve is used for reducing the friction force between the pipe wall and the soil in the jacking process, and the lost soil is filled; in the prior art, a grouting pipe is generally arranged in a jacking pipe, a grouting hole is processed on the pipe wall of the jacking pipe, one end of the grouting pipe is connected with a grouting pump, the other end of the grouting pipe is connected with the grouting hole, and slurry is injected into a gap between the jacking pipe and soil through the grouting pipe and the grouting hole.

With respect to the related art, the inventors consider that, after the grouting pipe is pulled out, the poured grout, water in soil, and the like overflow from the grouting hole, thereby not only polluting the construction environment in the pipe, but also affecting the grouting effect.

Disclosure of Invention

In order to reduce slurry from overflowing from a grouting hole, the application provides grouting equipment for pipe jacking construction.

The utility model provides a pair of grouting equipment for push pipe construction adopts following technical scheme:

the grouting equipment for pipe jacking construction comprises a grouting pipe, a grouting pump arranged on the grouting pipe and a blocking piece, wherein one end of the grouting pipe is used for feeding, and the other end of the grouting pipe is used for extending into a grouting hole; the mounting piece can be used for mounting the grouting pipe at a grouting hole; the sealing piece comprises a sealing plate, a sealing gasket, a rotating plate and a torsion spring, wherein the sealing gasket is coaxially arranged on the peripheral side wall of the sealing plate; the sealing plate is provided with an opening for the grouting pipe to penetrate, and the rotating plate is hinged to one side of the sealing plate, which is close to soil, and can be covered on the opening; the torsion spring is arranged on the hinge shaft of the rotating plate, and can enable the rotating plate to be tightly abutted on the sealing plate.

By adopting the technical scheme, when the jacking pipe is used for construction, the grouting pipe stretches into the grouting hole and pushes against the rotating plate, the rotating plate is rotated and is far away from the opening by overcoming the elasticity of the torsion spring, the grouting pipe passes through the sealing plate, the grouting pipe is installed at the position of the grouting hole through the installation piece, then the grouting pump is started, and grout enters the grouting hole along the grouting pipe and enters a gap between the pipeline and soil for grouting; when the grouting pipe is disassembled after construction is completed, the rotating plate seals the opening under the action of the torsion spring along with the distance of the grouting pipe, so as to seal the grouting pipe; the sealing plate, sealing pad, revolving plate and torsional spring that set up, the sealing plate outside seals with the slip casting hole inner wall through sealing pad, revolving plate department seals the opening part through the elasticity of torsional spring, and then seal whole slip casting hole after the slip casting pipe is dismantled automatically, reduce the thick liquid that overflows from the slip casting hole, reduce the pollution to the construction environment in the pipeline on the one hand, reduce intraductal ponding etc. on the other hand and guarantee to have sufficient thick liquid between soil and the pipeline, avoid the thick liquid to run off and make the gap between soil and the pipeline, thereby increase compressive strength and cohesiveness of pipeline week side, be convenient for consolidate, prevent the pavement subsidence, guarantee the safe in utilization of pipeline.

Optionally, two sealing plates are coaxially arranged, a plurality of connecting rods are distributed between the two sealing plates along the circumferential direction, two ends of each connecting rod are respectively arranged on the two sealing plates, the connecting rods are close to the side walls of the sealing plates, and the sealing gaskets are arranged around the connecting rods.

Through adopting above-mentioned technical scheme, the connecting rod of setting, on the one hand and two closing plates cooperation formation cavity, carry out double-deck blocking to the thick liquid of whereabouts, reduce the thick liquid that runs off, on the other hand increase the area of contact of sealed pad with annotate the downthehole wall of liquid, increase frictional force, and then strengthen the joint strength before the two.

Optionally, the grouting pipe comprises a feeding section, a connecting section and at least one group of straight sections which are sequentially communicated, wherein the feeding section is used for feeding, the connecting section is arranged in an arch shape and distributed along the length direction of the pipeline, and the connecting section is arranged close to the inner wall of the pipeline; the straight section is uniformly arranged on the connecting section, and a control valve is arranged on the straight section.

By adopting the technical scheme, the feeding section, the connecting section and the straight section can perform grouting on different positions of the pipeline, so that the grouting uniformity is improved, and the grouting effect is further improved; due to the effect of the gravity of the slurry, the slurry on the top wall of the pipeline can be left along two sides, and the grouting speed at different positions and the opening and closing of the grouting pipe can be regulated by the control valve, so that the grouting uniformity is ensured.

Optionally, the mounting includes multiunit arc, screens board and sliding plate, and is a plurality of the arc is coaxial with the slip casting hole, just the arc external diameter is unanimous with the slip casting hole internal diameter, sliding plate sliding connection is on two adjacent the arc, the screens board sets up the arc is in along axial both ends, and be used for respectively with pipeline inner wall and outer wall butt.

By adopting the technical scheme, the arc-shaped plate, the clamping plates and the sliding plates are arranged and extend into the grouting holes when gathering, then the sliding plates are adjusted to slide out of the arc-shaped plate, the two clamping plates respectively abut against the inner wall and the outer wall of the pipeline, and a layer of safety layer is embedded in the grouting holes; as the intermediate piece connecting pipeline, the plugging piece and the grouting pipe, the grouting hole does not need to be reprocessed, the damage to the pipeline is reduced, and the strength of the pipeline body is ensured.

Optionally, the sealing gasket is arranged in a step shape corresponding to the inner walls of the arc-shaped plate and the sliding plate, and the sealing gasket is tightly abutted against the inner walls of the arc-shaped plate and the sliding plate.

Through adopting above-mentioned technical scheme, the sealed pad sets up to the ladder type according to the unevenness of arc and sliding plate inner wall to the sealed pad can tightly support at the inner wall of arc and sliding plate simultaneously, supports the arc on annotating the liquid hole inner wall tightly, avoids the arc and annotates the gap between the liquid hole, between sliding plate and the arc, improves the seal of annotating the liquid hole.

Optionally, the straight section is connected with the rotation joint in a coaxial rotation way, the straight section stretches into the grouting hole, and the rotation joint is in threaded connection with the arc-shaped plate.

Through adopting above-mentioned technical scheme, the swivel joint of setting can drive straight section and stretch into the slip casting hole to fix straight section on the arc through threaded connection, quick connect grouting pipe and pipeline, the guidance quality is better with the leakproofness.

Optionally, the plugging piece further comprises a limiting ring, the limiting ring is coaxially connected with the inner wall of the arc-shaped plate in a threaded manner, and the limiting ring is arranged between the sealing plate and the rotary joint.

By adopting the technical scheme, when grouting is carried out, slurry between the pipeline and soil can generate pressure on the sealing plate, so that the friction force between the sealing gasket and the arc plate can be overcome, and the whole sealing piece is pushed to one side of the inner cavity of the pipeline; the limiting ring can be connected with and fixed on one side, close to the inner cavity of the pipeline, of the sealing plate, and supports and limits the plugging piece, so that the plugging piece is guaranteed to plug the grouting hole.

Optionally, a clamping groove for sliding the sliding plate is formed in the side wall of the arc-shaped plate, and an abutting plate is arranged on one side, close to the grouting hole, of the sliding plate; the clamping groove is provided with an elastic piece on the inner wall close to the notch, the elastic piece can enable the abutting plate to abut against the inner wall of the grouting hole, and meanwhile two sides of the abutting plate can abut against the side walls of the adjacent two arc plates.

Through adopting above-mentioned technical scheme, the butt board that sets up can stretch out the draw-in groove at the sliding plate after for butt board outer wall and arc outer wall are in same radian face, and with the inner wall butt in slip casting hole simultaneously under the effect of elastic component, reduce the gap between mounting whole and the slip casting hole inner wall, and then reduce the loss of thick liquid.

Optionally, the elastic component includes spring and thrust post, the thrust post is followed the arc radially sets up, and sliding connection is in on the draw-in groove inner wall, the spring sets up on the thrust post, and can make the ball tends to tightly support the slip board inner wall.

Through adopting above-mentioned technical scheme, the spring that sets up, push against post and spring can promote the inner wall butt of butt board and slip casting hole after the draw-in groove is stretched out to the butt board to for it provides the support, can carry out spacingly to the sliding plate simultaneously, avoid the limiting plate to drop.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the sealing plate, the sealing gasket, the rotating plate and the torsion spring are arranged, the outer side of the sealing plate is sealed with the inner wall of the grouting hole through the sealing gasket, the rotating plate seals the opening through the elasticity of the torsion spring, and then the whole grouting hole is automatically sealed after the grouting pipe is disassembled, so that slurry overflowed from the grouting hole is reduced, pollution to the construction environment in a pipeline is reduced, ponding and the like in the pipe are reduced, enough slurry is ensured between soil and the pipeline on the one hand, slurry loss is avoided, gaps are generated between the soil and the pipeline due to the loss of the slurry, the compressive strength and the cohesiveness of the periphery of the pipeline are increased, the pavement subsidence is prevented, and the use safety of the pipeline is ensured;

2. the connecting rod is matched with the two sealing plates to form a cavity, double-layer blocking is carried out on falling slurry, the lost slurry is reduced, the contact area between the sealing gasket and the inner wall of the liquid injection hole is enlarged, the friction force is increased, and the connection strength of the sealing gasket and the liquid injection hole is further enhanced;

3. the two clamping plates are respectively abutted against the inner wall and the outer wall of the pipeline, and a layer of safety layer is embedded in the grouting hole; as the intermediate piece connecting pipeline, the plugging piece and the grouting pipe, the grouting hole does not need to be reprocessed, the damage to the pipeline is reduced, and the strength of the pipeline body is ensured.

Drawings

Fig. 1 is a schematic diagram of the overall structure of grouting equipment for pipe jacking construction according to the embodiment of the application.

Fig. 2 is an internal schematic view of the pipe of fig. 1.

Fig. 3 is a schematic view of the structure of the mount of fig. 1.

Fig. 4 is an exploded view of fig. 3 along the axis of the straight section.

Fig. 5 is a transverse cross-sectional view of the mount of fig. 3.

Fig. 6 is an internal schematic view of the closure of fig. 3.

Reference numerals illustrate: 1. a pipe; 11. grouting holes; 2. a liquid storage tank; 3. grouting pipe; 31. a feeding section; 32. a connection section; 33. a straight section; 34. a control valve; 35. a rotary joint; 4. a mounting member; 41. an arc-shaped plate; 411. a clamping groove; 412. a caulking groove; 42. a clamping plate; 43. a sliding plate; 431. a guide groove; 44. an abutting plate; 45. a barrier strip; 46. a spring; 47. a pushing column; 48. a ball; 5. a blocking member; 51. a sealing plate; 52. a connecting rod; 53. a sealing gasket; 54. a rotating plate; 55. a torsion spring; 56. and a limiting ring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses grouting equipment for pipe jacking construction. Referring to fig. 1 and 2, a pipe 1 is pushed into the soil, and a plurality of grouting holes 11 are formed in both sides and a top wall of an inner wall of the pipe 1 in a circumferential direction. Referring to fig. 1 and 3, grouting equipment for pipe jacking construction comprises a liquid storage tank 2, a grouting pipe 3, a grouting pump, a mounting piece 4 and a plugging piece 5; the liquid storage tank 2 is positioned on the ground at one side of the inspection well, and one end of the grouting pipe 3 extends into the liquid storage tank 2 and is communicated with the liquid storage tank 2 through a flange; the grouting pump is arranged in the liquid storage tank 2 and is communicated with the grouting pipe 3 by a flange, and the other end of the grouting pipe 3 is arranged in the grouting hole 11 by the mounting piece 4; the blocking member 5 is provided at the grouting hole 11 and blocks the grouting hole 11.

Referring to fig. 1 and 2, the grouting pipe 3 comprises a feeding section 31, a connecting section 32 and at least one group of straight sections 33 which are communicated in sequence, wherein the feeding section 31 is communicated with the connecting section 32, and the connecting section 32 and the straight sections 33 are communicated through three-way joints. The feeding section 31 communicates with the tank 2 and delivers slurry from the surface into the manhole and horizontally into the pipe 1. The connecting sections 32 are arranged in an arch shape and distributed along the length direction of the pipeline 1, and the pipeline 1 is subjected to sectional grouting at different positions; the connecting section 32 is arranged close to the grouting holes 11 formed in the inner wall of the pipeline 1. The number of the straight sections 33 is set according to the number of the grouting holes 11, the straight sections 33 are uniformly arranged on the connecting sections 32, and each straight section 33 is provided with a control valve 34 for independently controlling the straight section 33. The straight section 33 is rotatably connected with a rotary joint 35 through a bearing, the inner ring of the bearing is welded on the outer wall of the straight section 33, and the outer ring of the bearing is coaxially welded on the inner ring of the rotary joint 35. The straight section 33 extends into the grouting hole 11 and the swivel joint 35 is connected to the grouting hole 11 by means of the mounting 4.

Referring to fig. 4 and 5, the mounting member 4 includes four sets of arc plates 41, a detent plate 42 and a sliding plate 43, the four sets of arc plates 41 are coaxial with the grouting holes 11, and the outer diameter of the arc plates 41 is matched with the inner diameter of the grouting holes 11 and can slide in the grouting holes 11; the clamping plates 42 are arranged at two ends of the arc plate 41 along the axial direction and are respectively used for being abutted with the inner wall and the outer wall of the pipeline 1. The side wall of the arc plate 41 is provided with a clamping slot 411 for sliding the sliding plate 43, and one side of the sliding plate 43 close to the inner wall of the grouting hole 11 is provided with an abutting plate 44 integrally arranged with the sliding plate 43; the clamping groove 411 is provided with an elastic piece on the inner wall close to the notch, the elastic piece can enable the abutting plate 44 to be abutted against the inner wall of the grouting hole 11, meanwhile, two sides of the abutting plate 44 can be abutted against the side walls of the two adjacent arc plates 41, and the outer wall of the abutting plate 44 and the outer wall of the arc plate 41 are on the same arc face.

Referring to fig. 5, the elastic member includes a spring 46, a pushing post 47 and a ball 48, the pushing post 47 is radially disposed along the arc 41, an inner wall of the slot 411 near one side of the axle center is provided with a caulking groove 412 for sliding the pushing post 47 along the axial direction, the ball 48 is embedded in one end of the pushing post 47 facing the outer side of the arc 41, and the sliding plate 43 is provided with a guiding groove 431 for rolling the ball 48; the spring 46 is arranged in the clamping slot 411, one end of the spring 46 is welded to the pushing post 47, the other end is welded to the bottom wall of the clamping slot 411, and the balls 48 can tend to tightly lean against the inner wall of the guide slot 431. The two ends of the sliding plate 43 are welded with a blocking strip 45, and the blocking strip 45 is disposed toward the axial center side of the arc plate 41 and can be abutted against the pushing post 47.

Referring to fig. 4 and 6, the blocking member 5 includes a sealing plate 51, a connecting rod 52, a packing 53, a rotating plate 54, a torsion spring 55 and a stopper 56, the packing 53 being coaxially disposed on a peripheral side wall of the sealing plate 51; the two sealing plates 51 are coaxially arranged, and the plurality of connecting rods 52 are arranged and distributed between the two sealing plates 51 along the circumferential direction of the sealing plates 51; the connecting rod 52 is axially parallel to the grouting holes 11, two ends of the connecting rod 52 are welded on the two sealing plates 51 respectively, the connecting rod 52 is arranged close to the side wall of the sealing plate 51, and the sealing gasket 53 surrounds the connecting rod 52 and is adhered to the connecting rod 52. The sealing gasket 53 is arranged in a stepped manner corresponding to the inner walls of the arc-shaped plate 41 and the sliding plate 43, and the sealing gasket 53 abuts against the inner walls of the arc-shaped plate 41 and the sliding plate 43. The limiting ring 56 is coaxially and threadedly connected to the inner wall of the arc-shaped plate 41, and the limiting ring 56 is positioned between the sealing plate 51 and the rotary joint 35 to support the sealing plate 51; the inner ring of the limiting ring 56 is provided with a hexagonal prism, so that the limiting ring is convenient to rotate.

Referring to fig. 6, the sealing plate 51 is provided with an opening through which the grouting pipe 3 penetrates, and the rotating plate 54 is hinged to one side of the sealing plate 51 close to soil and can be covered on the opening; the hinge axis of the swivel plate 54 is arranged perpendicular to the diameter of the pouring orifice. The torsion spring 55 is sleeved on the hinge shaft of the rotating plate 54, one end of the torsion spring 55 is welded on the hinge shaft of the rotating plate 54, the other end of the torsion spring 55 is welded on the sealing plate 51, and the torsion spring 55 can enable the rotating plate 54 to be tightly abutted on the sealing plate 51.

The embodiment of the application provides a grouting equipment for pipe jacking construction, which comprises the following implementation principle: during pipe jacking construction, the arc plate 41 and the clamping plate 42 are gathered and extend into the grouting hole 11, then the sliding plate 43 and the abutting plate 44 are adjusted to gradually slide out of the clamping slot 411 until the blocking strip 45 abuts against the abutting column 47, the outer wall of the abutting plate 44 and the outer wall of the arc plate 41 are located on the same radian surface under the action of the spring 46 by the abutting column 47, at the moment, the outer walls of the arc plate 41 and the abutting plate 44 abut against the inner wall of the grouting hole 11, and the two clamping plates 42 abut against the inner wall and the outer wall of the pipeline 1 respectively.

The blocking piece 5 is axially extended into the grouting hole 11 such that the outer wall of the packing 53 corresponds to the inner wall of the sliding plate 43 until the blocking piece 5 is completely extended into the grouting hole 11 and the screw portion is exposed. And then the limiting ring 56 is fixed on the outer side of the plugging piece 5 in a threaded manner to support the plugging piece 5.

The straight section 33 stretches into the grouting hole 11 and pushes against the rotating plate 54, the rotating plate 54 rotates and is far away from the opening against the elastic force of the torsion spring 55, the straight section 33 passes through the sealing plate 51, and the straight section 33 is connected onto the inner wall of the arc-shaped plate 41 in a threaded manner under the action of the rotating joint 35; the grouting pump is started, and the slurry enters the grouting holes 11 along the grouting pipe 3 and enters a gap between the pipeline 1 and the soil for grouting. When the grouting pipe 3 is disassembled after construction is completed, the rotating plate 54 seals the opening under the action of the torsion spring 55 along with the distance of the grouting pipe 3, and then seals the grouting pipe 3.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (4)

1. Grouting equipment for pipe jacking construction comprises a grouting pipe (3) and a grouting pump arranged on the grouting pipe (3), and is characterized in that: the grouting device further comprises a mounting piece (4) and a blocking piece (5), wherein one end of the grouting pipe (3) is used for feeding, and the other end of the grouting pipe is used for extending into the grouting hole (11); the mounting (4) can be used for mounting the grouting pipe (3) at a grouting hole (11);

the plugging piece (5) comprises a sealing plate (51), a sealing gasket (53), a rotating plate (54) and a torsion spring (55), wherein the sealing gasket (53) is coaxially arranged on the peripheral side wall of the sealing plate (51);

the sealing plate (51) is provided with an opening for the grouting pipe (3) to penetrate, and the rotating plate (54) is hinged to one side of the sealing plate (51) close to soil and can be covered on the opening;

the torsion spring (55) is arranged on the hinge shaft of the rotating plate (54) and can enable the rotating plate (54) to be tightly abutted on the sealing plate (51);

the two sealing plates (51) are coaxially arranged, a plurality of connecting rods (52) are distributed between the two sealing plates (51) along the circumferential direction, two ends of each connecting rod (52) are respectively arranged on the two sealing plates (51), the connecting rods (52) are close to the side walls of the sealing plates (51), and the sealing gaskets (53) are arranged around the connecting rods (52);

the grouting pipe (3) comprises a feeding section (31), a connecting section (32) and at least one group of straight sections (33) which are sequentially communicated, wherein the feeding section (31) is used for feeding, the connecting section (32) is arranged in an arch shape and distributed along the length direction of the pipeline (1), and the connecting section (32) is arranged close to the inner wall of the pipeline (1);

the straight sections (33) are uniformly arranged on the connecting sections (32), and control valves (34) are arranged on the straight sections (33);

the mounting piece (4) comprises a plurality of groups of arc plates (41), clamping plates (42) and sliding plates (43), wherein a plurality of the arc plates (41) are coaxial with the grouting holes (11), the outer diameters of the arc plates (41) are consistent with the inner diameters of the grouting holes (11), the sliding plates (43) are connected to two adjacent arc plates (41) in a sliding mode, and the clamping plates (42) are arranged at two ends of the arc plates (41) along the axial direction and are respectively used for being abutted with the inner wall and the outer wall of the pipeline (1);

the sealing gasket (53) is arranged in a stepped manner corresponding to the inner walls of the arc-shaped plate (41) and the sliding plate (43), and the sealing gasket (53) is tightly abutted against the inner walls of the arc-shaped plate (41) and the sliding plate (43);

the straight section (33) is coaxially and rotatably connected with a rotary joint (35), the straight section (33) stretches into the grouting hole (11), and the rotary joint (35) is in threaded connection with the arc-shaped plate (41).

2. The grouting equipment for pipe jacking construction according to claim 1, wherein: the plugging piece (5) further comprises a limiting ring (56), the limiting ring (56) is coaxially connected with the inner wall of the arc-shaped plate (41) in a threaded mode, and the limiting ring (56) is arranged between the sealing plate (51) and the rotary joint (35).

3. The grouting equipment for pipe jacking construction according to claim 1, wherein: a clamping groove (411) for the sliding plate (43) to slide is formed in the side wall of the arc-shaped plate (41), and an abutting plate (44) is arranged on one side, close to the grouting hole (11), of the sliding plate (43); the clamping groove (411) is provided with an elastic piece on the inner wall close to the notch, the elastic piece can enable the abutting plate (44) to abut against the inner wall of the grouting hole (11), and meanwhile two sides of the abutting plate (44) can abut against the side walls of the adjacent two arc-shaped plates (41).

4. The grouting equipment for pipe jacking construction according to claim 3, wherein: the elastic piece comprises a spring (46) and a pushing post (47), the pushing post (47) is radially arranged along the arc-shaped plate (41) and is slidably connected to the inner wall of the clamping groove (411), the spring (46) is arranged on the pushing post (47), and the pushing post (47) can tend to tightly lean against the inner wall of the sliding plate (43).