CN115789333A - Jacking pipe construction machine head hole-entering pushing method - Google Patents

Abstract

The invention belongs to the technical field of trenchless construction, and particularly relates to a jacking pipe construction machine head hole-entering pushing method.A back wall is manufactured in a back iron combined concrete mode, the thickness of the wall body is one meter, and two sides of the back iron are firmly welded and fixed with well wall embedded iron; making a reserved hole, installing a water-stopping hole door rubber ring and plugging water leakage points on the periphery of the hole, and constructing a dewatering well on the periphery of the well in advance to reduce the water level near the hole by pumping with a water pump so as to prevent overlarge external water pressure when the machine head is jacked in; installing a guide rail and hoisting a push bench shell to go down a well, welding a bracket and a stress wing plate on two sides of the push bench shell and installing two push picks, wherein the push picks are installed on the bracket and fixed on the outer side of the push bench shell; the method is slightly adjusted based on the arrangement form of normal pipe jacking method construction equipment, is simple and easy to implement, and can achieve the effects of improving the construction speed and reducing the construction cost under the condition of not changing the well structure.

Description

Jacking pipe construction machine head hole-entering pushing method

Technical Field

The invention belongs to the technical field of trenchless construction, and particularly relates to a jacking pipe construction machine head hole-entering pushing method.

Background

The pipe-jacking construction process is a non-excavation construction method, and is characterized by that in the course of construction it has no need of excavating soil body, and utilizes pipe-jacking machine to cut rock soil and form horizontal hole so as to implement pipeline laying.

A chinese patent publication No. CN109763828a discloses a pipe jacking machine tunneling construction method, which includes: predicting and calculating the tunneling parameters of the pipe jacking machine according to the buried depth, the geological condition and the environmental condition of the pipe jacking machine; detecting and monitoring the ground settlement deformation condition when the pipe jacking machine works, and verifying the predicted tunneling parameters according to the monitoring result; the tunneling parameters comprise soil pressure values, and the theoretical calculation formula of the soil pressure values is as follows: p0= K × γ × H; wherein P0 is a theoretical calculation value of the soil pressure on the front surface of the pipe jacking machine, K is a lateral pressure coefficient of soil, gamma is the volume weight of the soil, and H is the influence depth of the pipe jacking; the actually adopted soil pressure value is P, the preparation pressure is P1, and the calculation formula of the actual soil pressure value is as follows: p = P0+ P1. By the technical scheme provided by the invention, the problem of poor tunneling construction effect of the pipe jacking machine in the prior art can be solved.

The problem that a pipe jacking machine cannot normally jack a push hole due to the fact that the size of a structural well is insufficient sometimes occurs in the trenchless construction process, but the existing technical scheme does not have a construction method aiming at the working condition, most of the existing solutions aiming at the problem are well structure changes, the construction speed is greatly delayed, and the construction period is easily delayed; therefore, the invention provides a jacking pipe construction machine head hole-entering pushing method.

Disclosure of Invention

To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a jacking pipe construction machine head hole-entering pushing method, which comprises the following steps:

s1, manufacturing a back wall by using a back iron combined concrete mode, wherein the thickness of the wall is one meter, and two sides of the back iron are firmly welded and fixed with well wall embedded iron;

s2, making a reserved hole, installing a water stop hole door rubber ring and blocking water leakage points on the periphery of the hole, and constructing a dewatering well on the periphery of the well in advance to reduce the water level near the hole by using a water pump to pump and drain so as to prevent overlarge external water pressure when the machine head is jacked;

s3, installing a guide rail, hoisting the push bench shell to a well, welding a bracket and a stress wing plate on two sides of the push bench shell, and installing two jacking picks, wherein the jacking picks are installed on the bracket and fixed on the outer side of the push bench shell to prevent the push bench shell from turning over laterally during jacking;

s4, starting jacking the pipe jacking, wherein a manipulator controls an oil pump of an operation table, a jacking pickaxe extends out to jack to a back wall, the back wall is stressed and then reacts on wing plates on two sides of a shell of the pipe jacking machine, and the shell of the pipe jacking machine is integrally stressed to push a hole forward;

s5, enabling the shell of the pipe jacking machine to enter the hole, starting a cutter disc to rotate and grind the hole, controlling the pushing picks on two sides to continuously push until the front part of the shell of the pipe jacking machine enters the hole, dismantling the pushing picks, a bracket and a wing plate, and installing the pushing picks on a pushing pick frame in front of the back to push the pushing picks by adopting a normal method; during working, the problem of insufficient structural space of the pipe jacking well is effectively solved through a reverse jacking hole entering mode, the method is slightly adjusted based on the arrangement form of normal pipe jacking method construction equipment, the method is simple and easy to implement, and the effects of improving the construction speed and reducing the construction cost can be achieved under the condition of not changing the well structure.

Preferably, a cutter head is rotatably connected to the advancing end of the shell of the tube push bench, a rotating shaft is fixed inside the cutter head, a driving assembly is installed at one end, away from the cutter head, of the rotating shaft, the driving assembly is used for driving the rotating shaft to rotate, a partition plate is arranged between the cutter head and the driving assembly, the cutter head is rotatably connected with the partition plate, the driving assembly is fixedly connected with the shell of the tube push bench, a plurality of stirring shafts are fixed outside the rotating shaft and between the cutter head and the partition plate, one side, close to the driving assembly, of each stirring shaft is attached to the partition plate, a recovery hole is formed in the bottom end of the partition plate, one side, close to the driving assembly, of the partition plate is fixedly provided with a recovery tube, and a packing auger is installed inside the recovery tube; the during operation, drive the rotation axis through drive assembly and rotate, thereby the rotation axis rotates and drives the blade disc and rotate, the blade disc can cut soil after rotating, thereby make advancing that the pipe pushing jack casing can be smooth, and then be convenient for lay of pipeline, and at blade disc pivoted in-process, it can drive the (mixing) shaft simultaneously and rotate, the (mixing) shaft can carry out further stirring to shredded soil at the pivoted in-process, make it smash, inside ground soil falls into the recovery hole, then beat its transportation through the inside auger of recovery pipe, carry out further breakage to soil through setting up the (mixing) shaft, thereby can effectually prevent that the condition that soil jam leads to the unable forward of pipe pushing jack from appearing in-process that advances at the pipe pushing jack.

Preferably, a puncture head is connected to the inside of the rotating shaft in a sliding manner, a telescopic rod is fixed to one side, close to the partition plate, of the puncture head, a limiting frame is connected to the outside of the telescopic rod in a sliding manner, an inserting contact is fixed to one end, close to the partition plate, of the telescopic rod, a stopping contact is arranged at one end, far away from the telescopic rod, of the inserting contact, and the stopping contact is fixedly connected with the limiting frame, namely the inserting contact and the stopping contact are in signal connection with a controller of the shell of the pipe jacking machine through a circuit; the during operation, in the in-process that advances at the push bench, in case when great hard stone appears in the soil, the rotation axis can promote the puncture head motion this moment until puncture head and stone contact, after puncture head and stone contact, the stone can exert the extrusion force to it, thereby promote the puncture head and slide in the rotation axis is inside, thereby the puncture head slides and promotes the telescopic link motion, the telescopic link motion and then drive the grafting contact motion until the insertion contact contacts with the contact of shutting down, thereby the hydraulic means of push bench just can obtain the signal when the telescopic link contacts with shutting down and shut down and stop the propulsion, thereby prevent that the push bench from leading to its direction of advance to take place the skew because of the stone hindrance, also prevent simultaneously that the push bench from appearing damaging.

Preferably, a follow-up magnet is fixed inside the puncture head, and an electrified magnet is installed inside the partition plate; during operation, after the pipe pushing jack is shut down, an external worker starts a power supply of the electrified magnet to enable the electrified magnet to generate magnetism to apply attraction to the follow-up magnet, so that the telescopic rod is further contracted, then the power supply of the electrified magnet is disconnected, the operation is repeated, and the puncture head can be driven to crush external stones, so that the effect of automatically crushing the stones is achieved.

Preferably, a plurality of shaking springs are fixed between the puncture head and the partition plate and positioned outside the telescopic rod; during operation, when the puncture head receives magnetic force, the spring is rocked through reciprocating compression of the puncture head, and the puncture head can be driven to flick in the process of resetting of the spring, so that the crushing effect of the puncture head on stones is further improved.

Preferably, an elastic membrane is arranged inside the rotating shaft and outside the puncture head, a power-on column is fixed at one end of the elastic membrane close to the rotating shaft, and an electrorheological body is placed inside the elastic membrane; the during operation, at the in-process of installation puncture head, through the inside imported current of circular telegram post to the current variant, thereby change the nature of current variant and make it become the solidification state, the current variant just can exert resistance to puncture head like this, thereby prevent that puncture head from appearing the alert condition of wrong report at the in-process of normal push pipe operation, and after meetting the stone, the current variant can drive the elastic membrane distortion under the effect of big power, and when puncture head carries out the breakage to the stone, the staff should close the power of circular telegram post, make the current variant resume fluidic nature.

Preferably, a plurality of balancing weights are connected to two sides of the cutter head in a sliding manner, and a plurality of cutting blades are fixed to one side of each balancing weight, which is far away from the cutter head; the during operation, at blade disc pivoted in-process, its outside balancing weight can drive the reciprocal slip of cutting blade under the effect of centrifugal force, and cutting blade when gliding in-process can carry out further cutting to soil, also prevents to contain the silk thread in the soil and twines the blade disc, leads to the condition of blade disc damage to appear.

Preferably, a plurality of crushing blades are fixed inside the stirring shaft, and an anti-corrosion coating is plated on the surfaces of the crushing blades; during operation, at (mixing) shaft pivoted in-process, its inside crushing blade also can together rotate thereupon, thereby crushing blade rotates and can prevent that the too big jam that causes of stone, improve equipment operation's stability to the further crushing of broken stone through the puncture head.

Preferably, an elastic sheet is fixed inside the stirring shaft and outside the crushing blade, and a striking ball is fixed at one end of the elastic sheet close to the crushing blade; during operation, at (mixing) shaft pivoted in-process, its inside ball of striking can be at the reciprocal bullet of the elastic component of the effect pull-down of inertia to strike crushing blade, crushing blade can produce vibrations after being struck, vibrations can make crushing blade to the improvement of the cutting effect certain degree of stone, and further the condition that prevents the stone and block up equipment appears.

Preferably, an extrusion block is fixed outside the stirring shaft, an oil storage bag is installed outside the extrusion block and inside the shell of the tube push bench, and an oil discharge tube is connected to one end, far away from the stirring shaft, of the oil storage bag in a penetrating manner; the during operation, at (mixing) shaft pivoted in-process, it can drive the extrusion piece and rotate, rotate to the back of contacting with the oil storage bag when the extrusion piece, the extrusion piece can extrude the oil storage bag to make the inside lubricating liquid of storage of oil storage bag spout through arranging oil pipe, spun lubricating liquid drops in the outside soil of push pipe machine casing, the frictional force that subsequent pipeline received at the in-process of laying just can reduce like this, thereby has reached the effect of the pipe laying of being convenient for.

The invention has the following beneficial effects:

1. the jacking pipe construction machine head hole-entering pushing method effectively solves the problem of insufficient structural space of a jacking pipe well through a hole-entering mode of reverse jacking, slightly adjusts the method based on the arrangement form of normal jacking pipe method construction equipment, is simple and easy to implement, and can achieve the effects of improving the construction speed and reducing the construction cost under the condition of not changing the well structure.

2. According to the pushing method for pushing the head of the pipe jacking construction machine into the tunnel, when a stone is encountered, the pushing device can push the puncture head to slide, so that the insertion contact point is driven to move until the insertion contact point is contacted with the stop contact point, and after the telescopic rod is contacted with the stop contact point, a hydraulic device of the pipe jacking machine can obtain a signal so as to stop the machine and stop the pushing, so that the deviation of the advancing direction of the pipe jacking machine caused by the obstruction of the stone is prevented, and meanwhile, the damage of the pipe jacking machine is also prevented.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a cross-sectional view of the shell structure of the push bench of the present invention;

FIG. 4 is a schematic structural view of a second embodiment of a shell structure of a push bench according to the present invention;

FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 4;

FIG. 6 is an enlarged view of a portion of the invention at B in FIG. 5;

fig. 7 is an enlarged view of a portion of the invention at C in fig. 4.

In the figure: 1. a push bench housing; 2. a cutter head; 3. a drive assembly; 4. a stirring shaft; 5. a recovery pipe; 6. a packing auger; 7. a puncture head; 8. a telescopic rod; 9. inserting contacts; 10. a shutdown contact; 11. energizing a magnet; 12. a follower magnet; 13. an elastic film; 14. an electrorheological fluid; 15. a current-carrying column; 16. a balancing weight; 17. a cutting blade; 18. a crushing blade; 19. knocking and hitting the ball; 20. an elastic sheet; 21. extruding the block; 22. an oil storage bag; 23. an oil discharge pipe; 24. the spring is rocked.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

Example one

As shown in fig. 1, the push method for pushing the pipe jacking construction head into the tunnel according to the embodiment of the invention comprises the following steps:

s1, manufacturing a back wall by using a back iron combined concrete mode, wherein the thickness of the wall is one meter, and two sides of the back iron are firmly welded and fixed with well wall embedded iron;

s2, making a reserved hole, installing a water-stopping hole door rubber ring and plugging water leakage points on the periphery of the hole, and constructing a dewatering well on the periphery of the well in advance to reduce the water level near the hole by pumping with a water pump so as to prevent overlarge external water pressure when the machine head is jacked;

s3, installing a guide rail, hoisting the push pipe machine shell 1 to go down a well, welding brackets and stress wing plates on two sides of the push pipe machine shell 1, and installing two jacking picks, wherein the jacking picks are installed on the brackets and fixed on the outer side of the push pipe machine shell 1 to prevent the push pipe machine shell from turning laterally;

s4, starting jacking of the pipe jacking, wherein a manipulator controls an oil pump of the operating platform, a jacking pick extends out and jacks to a back wall, the back wall is stressed and then reacts on wing plates on two sides of the pipe jacking machine shell 1, and the pipe jacking machine shell 1 is integrally stressed to push a hole forward;

s5, enabling the push bench shell 1 to enter the hole, starting the cutter disc 2 to rotate and grind the hole, controlling the push picks on two sides to continuously push until the front part of the push bench shell 1 enters the hole, removing the push picks, the bracket and the wing plate, and installing the push picks on a push pick frame in front of the back to push the push picks by a normal method; during working, the problem of insufficient structural space of the pipe jacking well is effectively solved through a reverse jacking hole entering mode, the method is slightly adjusted based on the arrangement form of normal pipe jacking method construction equipment, the method is simple and easy to implement, and the effects of improving the construction speed and reducing the construction cost can be achieved under the condition of not changing the well structure.

As shown in fig. 2 to 3, a cutter head 2 is rotatably connected to the advancing end of a tube push bench casing 1, a rotating shaft is fixed inside the cutter head 2, a driving assembly 3 is installed at one end, away from the cutter head 2, of the rotating shaft, the driving assembly 3 is used for driving the rotating shaft to rotate, a partition plate is arranged between the cutter head 2 and the driving assembly 3, the cutter head 2 is rotatably connected with the partition plate, the driving assembly 3 is fixedly connected with the tube push bench casing 1, a plurality of stirring shafts 4 are fixed outside the rotating shaft and between the cutter head 2 and the partition plate, one side, close to the driving assembly 3, of each stirring shaft 4 is attached to the partition plate, a recovery hole is formed in the bottom end of the partition plate, a recovery tube 5 is fixed to one side, close to the driving assembly 3, of the partition plate, and a packing auger 6 is installed inside the recovery tube 5; the during operation, drive the rotation axis through drive assembly 3 and rotate, thereby the rotation axis rotates and drives blade disc 2 and rotate, blade disc 2 can cut soil after rotating, thereby make advancing that push bench casing body 1 can be smooth, and then be convenient for lay of pipeline, and at blade disc 2 pivoted in-process, it can drive (mixing) shaft 4 simultaneously and rotate, (mixing) shaft 4 can carry out further stirring to shredded soil at the pivoted in-process, make it smash, soil after smashing falls into inside the recovery hole, then beat its transportation away through auger 6 of 5 inside of recovery pipes, carry out further breakage through setting up (mixing) shaft 4 to soil, thereby can effectually prevent the condition that soil jam leads to the push bench can't to advance to appear in-process appearance soil that advances at the push bench.

Example two

As shown in fig. 4 to 5, a first comparative example, in which another embodiment of the present invention is: a puncture head 7 is connected to the inside of the rotating shaft in a sliding mode, a telescopic rod 8 is fixed to one side, close to the partition plate, of the puncture head 7, a limiting frame is connected to the outside of the telescopic rod 8 in a sliding mode, an inserting contact 9 is fixed to one end, close to the partition plate, of the telescopic rod 8, a stopping contact 10 is arranged at one end, far away from the telescopic rod 8, of the inserting contact 9, and the stopping contact 10 is fixedly connected with the limiting frame, so that the inserting contact 9 and the stopping contact 10 are in signal connection with a controller of the pipe jacking machine shell 1 through a circuit; the during operation, in the in-process that advances at the push bench, in case when great hard stone appears in the soil, the rotation axis can promote puncture head 7 to move until puncture head 7 and stone contact this moment, after puncture head 7 and stone contact, the stone can exert the extrusion force to it, thereby promote puncture head 7 and slide in the rotation axis is inside, thereby puncture head 7 slides and promotes the motion of telescopic link 8, the motion of telescopic link 8 and then drive the motion of grafting contact 9 until grafting contact 9 and shut down contact 10 contact, the hydraulic means of push bench just can obtain the signal when the contact of telescopic link 8 and shut down contact 10 contacts after thereby shut down and stop the propulsion, thereby prevent that the push bench from leading to its direction of advance to take place the skew because of the stone hindrance, also prevent simultaneously that the push bench from appearing damaging.

As shown in fig. 5, a follower magnet 12 is fixed inside the puncture head 7, and an energized magnet 11 is mounted inside the partition plate; during operation, after the pipe pushing jack is shut down, the power of the electrifying magnet 11 is started by an external worker, the power is electrified to generate magnetism to apply attraction to the follow-up magnet 12, the telescopic rod 8 is further contracted, then the power of the electrifying magnet 11 is cut off, and the reciprocating motion is realized, so that the puncture head 7 can be driven to crush external stones, and the effect of automatically crushing the stones is achieved.

As shown in fig. 5, a plurality of shaking springs 24 are fixed between the puncture head 7 and the partition plate and outside the telescopic rod 8; during operation, when the puncture head 7 is under magnetic force, the spring 24 is rocked by the reciprocating compression of the puncture head, and the puncture head 7 is driven to bounce in the process of resetting the spring 24, so that the crushing effect of the puncture head 7 on stones is further improved.

As shown in fig. 5 to 6, an elastic membrane 13 is mounted inside the rotating shaft and outside the puncture head 7, an energizing column 15 is fixed at one end of the elastic membrane 13 close to the rotating shaft, and an electrorheological body 14 is placed inside the elastic membrane 13; during operation, in the process of installing the puncture head 7, current is introduced into the current variant 14 through the electrifying column 15, so that the property of the current variant 14 is changed to be in a solidification state, the current variant 14 can exert resistance on the puncture head 7, the situation of false alarm in the process of normal pipe jacking operation of the puncture head 7 is prevented, after a stone is encountered, the current variant 14 can drive the elastic membrane 13 to twist under the action of large force, and when the puncture head 7 crushes the stone, a worker should turn off the power supply of the electrifying column 15, and the property of the current variant 14 is recovered.

As shown in fig. 7, a plurality of balancing weights 16 are slidably connected to both sides of the cutterhead 2, and a plurality of cutting blades 17 are fixed to one side of each balancing weight 16, which is far away from the cutterhead 2; during operation, at blade disc 2 pivoted in-process, its outside balancing weight 16 can drive the reciprocal slip of cutting blade 17 under the effect of centrifugal force, and cutting blade 17 can carry out further cutting to soil in gliding in-process, also prevents to contain the silk thread in the soil and twines blade disc 2, leads to the condition appearance of blade disc 2 damage.

As shown in fig. 7, a plurality of crushing blades 18 are fixed inside the stirring shaft 4, and an anticorrosive coating is plated on the surfaces of the crushing blades 18; during operation, at (mixing) shaft 4 pivoted in-process, its inside crushing blade 18 also can rotate along with it, thereby crushing blade 18 rotates and can prevent that the too big jam that causes of stone, the stability of improve equipment operation to the further crushing of the broken stone through puncture head 7.

As shown in fig. 7, an elastic blade 20 is fixed inside the stirring shaft 4 and outside the crushing blade 18, and a knocking ball 19 is fixed at one end of the elastic blade 20 close to the crushing blade 18; during operation, at (mixing) shaft 4 pivoted in-process, its inside ball 19 of knocking can be moved the reciprocal bullet of flexure strip 20 under the effect of inertial force to strike crushing blade 18, crushing blade 18 can produce vibrations after being struck, vibrations can make crushing blade 18 to the improvement of the certain degree of cutting effect of stone, and further the condition that prevents the stone and block up equipment appears.

As shown in fig. 7, an extrusion block 21 is fixed outside the stirring shaft 4, an oil storage bag 22 is installed outside the extrusion block 21 and inside the pipe jacking machine shell 1, and an oil discharge pipe 23 is connected through one end of the oil storage bag 22, which is far away from the stirring shaft 4; the during operation, at (mixing) shaft 4 pivoted in-process, it can drive extrusion piece 21 and rotate, after extrusion piece 21 rotates to and contacts with oil storage bag 22, extrusion piece 21 can extrude oil storage bag 22, thereby make the inside lubricating liquid of storage bag 22 inside storage spout through oil extraction pipe 23, spun lubricating liquid drops in the soil of push pipe machine casing 1 outside, the frictional force that subsequent pipeline received at the in-process of laying just can reduce like this, thereby reached the effect of the pipe laying of being convenient for.

The working principle is as follows: when the pipe pushing machine is used, the driving assembly 3 drives the rotating shaft to rotate, the rotating shaft rotates to drive the cutter head 2 to rotate, the cutter head 2 can cut soil after rotating, so that the pipe pushing machine shell 1 can smoothly advance, and further a pipeline can be laid conveniently, in the rotating process of the cutter head 2, the cutter head can simultaneously drive the stirring shaft 4 to rotate, the stirring shaft 4 can further stir the crushed soil in the rotating process, so that the crushed soil can be crushed, the crushed soil falls into the recycling hole, then the crushed soil is transported away through the auger 6 in the recycling pipe 5, and the stirring shaft 4 is arranged to further crush the soil, so that the condition that the pipe pushing machine cannot advance due to soil blockage in the advancing process of the pipe pushing machine can be effectively prevented;

in the advancing process of the pipe jacking machine, once a large hard stone block appears in soil, the rotating shaft can push the puncture head 7 to move until the puncture head 7 is contacted with the stone block, after the puncture head 7 is contacted with the stone block, the stone block can apply extrusion force to the stone block, so that the puncture head 7 is pushed to slide in the rotating shaft, the puncture head 7 slides so as to push the telescopic rod 8 to move, the telescopic rod 8 moves to further drive the plug contact 9 to move until the plug contact 9 is contacted with the stop contact 10, after the telescopic rod 8 is contacted with the stop contact 10, a hydraulic device of the pipe jacking machine can obtain a signal to stop the machine to be pushed, the pipe jacking machine is prevented from deviating in the advancing direction due to the block of the stone block, and meanwhile, the pipe jacking machine is prevented from being damaged; after the pipe pushing jack is stopped, an external worker starts a power supply of the electrifying magnet 11 to electrify the power supply to generate magnetism to apply attraction force to the follow-up magnet 12, further the telescopic rod 8 is contracted, then the power supply of the electrifying magnet 11 is disconnected, and the puncture head 7 can be driven to crush external stones in a reciprocating mode, so that the effect of automatically crushing the stones is achieved; when the puncture head 7 is subjected to magnetic force, the shaking spring 24 is compressed in a reciprocating manner, and the puncture head 7 is driven to bounce in the process of resetting the shaking spring 24, so that the crushing effect of the puncture head 7 on stones is further improved;

in the process of installing the puncture head 7, current is led into the electro-rheological body 14 through the electrifying column 15, so that the property of the electro-rheological body 14 is changed into a solidified state, the electro-rheological body 14 can apply resistance to the puncture head 7, the situation of false alarm in the process of normal pipe jacking operation of the puncture head 7 is prevented, after a stone is met, the electro-rheological body 14 can drive the elastic membrane 13 to twist under the action of large force, and when the puncture head 7 crushes the stone, staff should turn off the power supply of the electrifying column 15, so that the electro-rheological body 14 recovers the property of fluid;

in the rotating process of the cutter head 2, the external balancing weight 16 drives the cutting blade 17 to slide in a reciprocating manner under the action of centrifugal force, and when the cutting blade 17 further cuts soil in the sliding process, the situation that the cutter head 2 is damaged due to the fact that a thread line contained in the soil winds the cutter head 2 is also prevented;

in the rotating process of the stirring shaft 4, the crushing blades 18 in the stirring shaft can also rotate along with the stirring shaft, and the crushing blades 18 rotate so as to further crush the stone blocks crushed by the puncture head 7, prevent the blockage caused by overlarge stone blocks and improve the running stability of equipment; in the rotating process of the stirring shaft 4, the knocking ball 19 in the stirring shaft can drive the elastic sheet 20 to bounce back and forth under the action of inertia force, so that the crushing blade 18 is knocked, the crushing blade 18 can vibrate after being knocked, the vibration can improve the cutting effect of the crushing blade 18 on the stone to a certain extent, and the condition that the equipment is blocked by the stone is further prevented;

at (mixing) shaft 4 pivoted in-process, it can drive extrusion piece 21 and rotate, after extrusion piece 21 rotates to and contacts with oil storage bag 22, extrusion piece 21 can extrude oil storage bag 22, thereby make the inside lubricated liquid of storage bag 22 through the blowout of oil extraction pipe 23, spun lubricated liquid drop falls in push bench casing 1 outside soil, the frictional force that subsequent pipeline received at the in-process of laying just can reduce like this, thereby reached the effect of the pipe laying of being convenient for.

The front, the back, the left, the right, the upper and the lower are all based on figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A jacking pipe construction machine head hole-entering pushing method is characterized in that: the method comprises the following steps:

s1, manufacturing a back wall by using a back iron combined concrete mode, wherein the thickness of the wall is one meter, and two sides of the back iron are firmly welded and fixed with well wall embedded iron;

s2, making a reserved hole, installing a water-stopping hole door rubber ring and plugging water leakage points on the periphery of the hole, and constructing a dewatering well on the periphery of the well in advance to reduce the water level near the hole by pumping with a water pump so as to prevent overlarge external water pressure when the machine head is jacked;

s3, installing a guide rail, hoisting the push bench shell (1) to a well, welding brackets and stress wing plates on two sides of the push bench shell (1), and installing two jacking picks, wherein the jacking picks are installed on the brackets and fixed on the outer side of the push bench shell (1) to prevent the push bench shell from turning laterally;

s4, starting jacking pipe jacking, wherein a manipulator controls an oil pump of the operating platform, a jacking pick extends out and jacks to a back wall, the back wall is reacted on wing plates on two sides of the pipe jacking machine shell (1) after being stressed, and the whole pipe jacking machine shell (1) is stressed to push a hole forward;

s5, enabling the push bench shell (1) to enter the hole, starting the cutter disc (2) to rotate and grind the hole, controlling the push picks on the two sides to be continuously pushed in until the front of the push bench shell (1) enters the hole, removing the push picks, the bracket and the wing plate, and installing the push picks on a push pick frame in front of the back to push the push picks by a normal method.

2. The jacking pipe construction machine head hole pushing method of claim 1, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: pipe pushing jack casing (1) end of advancing rotates and is connected with blade disc (2), blade disc (2) inside is fixed with the rotation axis, the rotation axis is kept away from the one end of blade disc (2) and is installed drive assembly (3), drive assembly (3) are used for driving the rotation axis and rotate, be provided with the division board between blade disc (2) and drive assembly (3), blade disc (2) rotate with the division board and are connected, drive assembly (3) and pipe pushing jack casing (1) fixed connection, the rotation axis outside just is located and is fixed with a plurality of (mixing) shaft (4) between blade disc (2) and the division board, one side and the division board laminating that (mixing) shaft (4) are close to drive assembly (3), the recovery hole has been seted up to the division board bottom, one side that the division board is close to drive assembly (3) is fixed with recovery tube (5), recovery tube (5) internally mounted has auger (6).

3. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: the utility model discloses a pipe jacking machine, including rotation axis, rotation axis inside sliding connection has puncture head (7), one side that puncture head (7) are close to the division board is fixed with telescopic link (8), telescopic link (8) outside sliding connection has spacing, the one end that telescopic link (8) are close to the division board is fixed with grafting contact (9), the one end that telescopic link (8) were kept away from in grafting contact (9) is provided with and shuts down contact (10), it is with spacing fixed connection to shut down contact (10), is that grafting contact (9) and shutdown contact (10) pass through the controller signal connection of circuit and pipe jacking machine casing (1).

4. The jacking pipe construction machine head hole-entering jacking method as claimed in claim 3, wherein: a follow-up magnet (12) is fixed inside the puncture head (7), and an electrified magnet (11) is installed inside the partition plate.

5. The jacking pipe construction machine head hole-entering jacking method as claimed in claim 3, wherein: a plurality of shaking springs (24) are fixed between the puncture head (7) and the partition plate and positioned outside the telescopic rod (8).

6. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: an elastic membrane (13) is arranged inside the rotating shaft and outside the puncture head (7), a power-on column (15) is fixed at one end, close to the rotating shaft, of the elastic membrane (13), and an electrorheological body (14) is placed inside the elastic membrane (13).

7. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: the cutter head is characterized in that a plurality of balancing weights (16) are connected to the two sides of the cutter head (2) in a sliding mode, and a plurality of cutting blades (17) are fixed to one side, away from the cutter head (2), of each balancing weight (16).

8. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: a plurality of crushing blades (18) are fixed inside the stirring shaft (4), and an anti-corrosion coating is plated on the surfaces of the crushing blades (18).

9. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: an elastic sheet (20) is fixed inside the stirring shaft (4) and outside the crushing blades (18), and a knocking ball (19) is fixed at one end, close to the crushing blades (18), of the elastic sheet (20).

10. The jacking pipe construction machine head hole pushing method of claim 2, wherein the jacking pipe construction machine head hole pushing method comprises the following steps: (mixing) shaft (4) external fixation has extrusion piece (21), the internally mounted that extrusion piece (21) outside just is located push bench casing (1) has oil storage bag (22), the one end through connection that (mixing) shaft (4) were kept away from in oil storage bag (22) has oil extraction pipe (23).

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