CN113803521B - Pipe jacking construction process - Google Patents
Pipe jacking construction process Download PDFInfo
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- CN113803521B CN113803521B CN202111152273.4A CN202111152273A CN113803521B CN 113803521 B CN113803521 B CN 113803521B CN 202111152273 A CN202111152273 A CN 202111152273A CN 113803521 B CN113803521 B CN 113803521B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a technical field of push pipe construction, in the work progress to traditional push pipe, the pipeline is placed to the comparatively complicated problem of process on the track, a push pipe construction technology is proposed, include two sets of vertical setting two sets of fixed plates in the well that starts through putting the pipe mechanism, two sets of fixed plates set up about the vertical face symmetry in track place, the fixed plate top all articulates there is the board of accepting, the fixed plate all is provided with and is used for ordering about and accepts the wobbling drive assembly of board, during push pipe construction, place the pipeline to two sets of accepting and pass through two sets of board swings of accepting of drive assembly drive again between the board, when two sets of boards of accepting swing to two sets of distances of accepting between the board are greater than the pipeline external diameter, the pipeline alright fall into on the track.
Description
Technical Field
The application relates to the technical field of pipe jacking construction, in particular to a pipe jacking construction process.
Background
Pipe jacking construction can be used for burying related pipelines without excavating the ground in a large range, and is generally applied to pipeline burying engineering with complex terrains and incapability of excavating the ground.
In the related technology, before pipe jacking construction, an originating well and a reaching well need to be excavated on the ground, then a track is laid in the originating well and jacking equipment is installed, the originating well is hoisted into the track by a pipe jacking machine such as a crane and placed in the track, then a pipeline to be laid is hoisted into the track, the pipe jacking machine is started, the jacking equipment drives the pipeline and the pipe jacking machine to horizontally move, the jacking equipment jacks to an extreme position and then returns to an initial state, at the moment, the next section of pipeline is hoisted onto the track by the hoisting equipment, the pipeline and the pipe jacking machine are driven by the jacking equipment to continuously horizontally move, so that continuous circulation is realized, and when the pipe jacking machine moves into the reaching well, the laying of the pipeline can be completed.
With respect to the above-described related art, the inventors consider that the following drawbacks exist: in the pipe jacking construction process, the pipeline is usually hoisted into the track in a way that a crane is matched with a steel wire rope, the pipeline is easily deviated in the hoisting process, so that a constructor needs to adjust the position of the pipeline in the shaft bottom in an auxiliary way in the hoisting process, the pipeline can be rightly opposite to the track and smoothly fall onto the track, the condition that the pipeline falls outside the track is reduced, the overall operation is complex, and certain danger exists in the process. Therefore, there is room for improvement.
Disclosure of Invention
In order to enable a pipeline to be placed on a track more conveniently and rapidly in the pipe jacking construction process, the application provides a pipe jacking construction process.
The application provides a pipe jacking construction process, which adopts the following technical scheme:
a pipe jacking construction process comprises the following steps:
s1: the pipe placing mechanism is arranged on the pipe placing machine;
s2: cleaning a construction site, and digging an originating well and an arrival well on the ground surface;
s3: laying two groups of track beams at the bottom of an originating well in parallel to form a track for the pipeline to be clamped in;
s4: pouring a rear seat wall on the wall of the starting well, installing a jack on the rear seat wall after the rear seat wall is solidified, and installing the jack;
s5: installing a pipe discharging mechanism on the originating well; placing the push bench on the track;
s6: starting the push bench and the jack, pushing the push bench by the jack to enable the push bench to drill into a soil layer, and then retracting a piston rod of the jack;
s7: a single section of pipeline is placed on a track formed by the two groups of track beams through a pipe placing mechanism, and a water inlet pipe, a water outlet pipe and various pipelines used by the pipe jacking machine are installed in the pipeline;
s8: starting the jack and the pipe jacking machine, and extending the piston rod out through the jack so as to jack the pipe jacking machine and the pipeline on the track into the underground soil layer; then retracting a piston rod of the jack and dismantling a water inlet pipe, a water outlet pipe and various pipelines in the pipeline;
s9: repeating S7 and S8 until all the pipelines are paved;
s10: removing the pipe jacking machine and the pipe placing mechanism, and backfilling an originating well and an arriving well;
the pipe placing mechanism comprises two groups of fixing plates vertically arranged in the originating well, and the two groups of fixing plates are arranged in the originating well
The fixed plate sets up about track place vertical face symmetry, the fixed plate top all articulates there is the board of accepting, the fixed plate all is provided with and is used for ordering about and accepts the wobbling drive assembly of board, and is two sets of when accepting the board and all being the horizontality, it is two sets of accept the board and be located the track top and cover the well head of well of starting.
By adopting the technical scheme, when the single pipeline is required to be placed on the track, the two groups of bearing plates are driven by the driving assembly to swing until the distance between the two groups of bearing plates is smaller than the outer diameter of the pipeline, the pipeline is placed on the two groups of bearing plates, the two bearing plates are driven by the driving component to swing towards the bottom of the starting well, a V-shaped included angle is formed by the two bearing plates in the swinging process, the pipeline is limited to roll by the V-shaped included angle formed by the two bearing plates, so that the pipeline can be always positioned above the track in the swinging process of the two bearing plates, when the driving component drives the two bearing plates to swing until the distance between the ends of the two bearing plates close to each other is larger than the outer diameter of the pipeline, the pipeline can be separated from the two bearing plates and fall on the track, therefore, the pipeline can be placed accurately on the track, and the method is simpler and more convenient compared with the traditional method of adopting a crane to hoist and move with the assistance of manpower; two sets of boards of accepting are in the horizontality through the drive assembly drive, and the well head of well that starts can be covered by two sets of boards of accepting, is favorable to constructor to fall the condition of well that starts.
Preferably, put tub mechanism still including setting up the gasbag between two sets of track roof beams, the gasbag top is the arc form that supplies the pipeline card to go into, it still is provided with the subassembly of inflating and bleeding that is used for ordering about gasbag inflation or shrink to accept the board, works as when inflating and bleeding subassembly drive gasbag inflation to extreme condition, the gasbag top is higher than the track roof beam top, works as when inflating and bleeding subassembly drive gasbag and shrinking to extreme condition, the top of gasbag is less than the track roof beam top.
By adopting the technical scheme, when the pipeline is placed downwards, the air bag is inflated through the inflation and exhaust assembly, so that the air bag is driven to expand, the pipeline falling off from the two groups of bearing plates can fall onto the air bag, and the rigid contact between the pipeline and the track is reduced; the top end of the air bag is arc-shaped for embedding the air bag, so that the pipeline is not easy to separate from the air bag, and the pipeline can be always opposite to the track; after the pipeline falls on the gasbag, take out the gas in the gasbag through filling the subassembly of bleeding, when the gasbag shrink to the gasbag top be less than the track top, the track can be blocked to the pipeline alright accuracy.
Preferably, the driving assembly comprises a hydraulic cylinder arranged on the fixing plate, the hydraulic cylinder comprises a main cylinder body and a main piston rod, one end, away from each other, of the main piston rod and the main cylinder body is hinged to one side, close to the fixing plate, of the bearing plate respectively, and the rotation axes of the main cylinder body and the main piston rod are parallel to the rotation axis of the bearing plate.
Through adopting above-mentioned technical scheme, the swing of accepting the board can be realized just to main piston rod through control pneumatic cylinder stretches out or withdrawal main cylinder body for it is more simple and convenient to accept the swing of board, and the pipeline of being convenient for is transferred to the track through the swing of two sets of boards of accepting better.
Preferably, the inflation and exhaust assembly comprises an air cylinder vertically fixed at the bottom of the starting well, the air cylinder is positioned below the bearing plate, the bottom of the air cylinder is communicated with the air bag through an air outlet pipe, and a driving rod is further arranged between a piston rod of the air cylinder and the bearing plate; the air bag type pipeline connecting device is characterized in that two ends of the driving rod are hinged to the bearing plates and the piston rods of the air cylinders respectively, the rotary axes at the two ends of the driving rod are parallel to the rotary axes of the bearing plates, when the bearing plates swing to be in a horizontal state, the piston rods of the air cylinders are located at the top ends of the air cylinders and the air bags are in a limit contraction state, and when the bearing plates swing to be in a two-group bearing plate interval and the air bags are larger than the outer diameter of a pipeline, the piston rods of the air cylinders are located at the bottom ends of the air cylinders and the air bags are in a limit expansion state.
Through adopting above-mentioned technical scheme, when drive assembly drive accept the board towards the in-process of well bottom wobbling of originating well, the piston in the swing board passes through the actuating lever and the piston rod drive cylinder moves towards cylinder bottom, thereby pass through the outlet duct with gas and impress in the gasbag, thereby realize accepting the swing of board orientation originating well in the time alright order about the gasbag inflation, thereby can fall on the expanded gasbag when making the pipeline break away from two sets of boards of accepting, thereby by the gasbag buffering, when drive assembly drive two sets of boards of accepting swing to the horizontality, the piston that the board passed through actuating lever and cylinder of accepting the board drove the cylinder moves towards the cylinder top, and then take out the gas in the gasbag, realize the shrink of gasbag, make the pipeline at gasbag top can accurately fall on the track.
Preferably, the pipe placing mechanism further comprises a pipe storage plate which is obliquely erected, and the pipe storage plate is positioned on one side of the bearing plate; the inclined lower end of the tube storage plate faces the bearing plate, a tube blocking plate protrudes out of the inclined lower end of the tube storage plate, and a tube jacking assembly used for jacking a pipeline at the inclined lower end of the tube storage plate out of the tube storage plate is further arranged on the bearing plate.
Through adopting above-mentioned technical scheme, through setting up the storage tube board, can leave a plurality of pipelines in the storage tube frame earlier, through the setting of keeping off the tube sheet, make the pipeline on the storage tube board be difficult for the landing to go out outside the storage tube board, through setting up the push pipe subassembly, when needs transfer the pipeline to the track on, the accessible push pipe subassembly will be located the pipeline of storage tube board slope lower extreme ejecting to the storage tube board, make the pipeline can roll and fall to two sets of boards of accepting on, be convenient for follow-up drive assembly two sets of boards of accepting and move and then put the pipeline to the gasbag toward the well bottom of the well of starting to send out.
Preferably, the pipe jacking assembly further comprises a pipe jacking plate arranged at the hinged end of the bearing plate, the pipe jacking plate and the bearing plate are arranged in parallel, when the bearing plate is in a horizontal state, the pipe jacking plate is located below the inclined lower end of the pipe storage plate, and the pipe storage plate is provided with a through groove for the pipe jacking plate to extend out.
By adopting the technical scheme, the top pipe plate and the bearing plate are arranged in parallel, and the pipe storage plate is provided with the through groove for the top pipe plate to extend out, so that the pipe pushing plate can be upwards tilted and protrude out of the pipe storage plate in the process of driving the bearing plate to swing towards the bottom of the starting well, a pipeline at the inclined lower end of the pipe storage plate is pushed away from the pipe storage plate, when the bottom of the jacked pipeline is higher than the top end of the pipe blocking plate, the pipeline rolls downwards through self gravity and falls between the two groups of bearing plates, and when the two groups of bearing plates swing to the state that the distance between the two ends close to each other is larger than the outer diameter of the pipeline, the pipeline can fall onto the air bag; meanwhile, the pipe jacking plate protruding out of the pipe storage plate can block the subsequent pipeline and limit the subsequent pipeline to slide on the pipe storage plate; when the driving assembly drives the two groups of bearing plates to swing towards the wellhead of the starting well, the top pipe plate swings downwards and resets, so that the subsequent pipeline can slide to the inclined lower section of the pipe storage plate through self gravity.
Preferably, one end of the top tube plate, which is far away from the bearing plate, is rotatably connected with a rolling roller, and the rotation axis of the rolling roller is parallel to that of the bearing plate.
Through adopting above-mentioned technical scheme, through the setting of roll roller, be favorable to reducing the ejector plate pipe and keep away from the frictional force of accepting between board one end and the pipeline for when drive assembly drive was accepted the board and is swung to the horizontality, the ejector plate can more smoothly swing downwards and remove to storing up the pipe board below, and the follow-up pipeline of being convenient for slides to the slope lower extreme that stores up the pipe board through self gravity.
Preferably, a flexible pad is fixed on one surface of the bearing plate, which faces away from the bottom of the originating well.
Through adopting above-mentioned technical scheme, through the setting of flexile cushion for when the pipeline top that the push pipe subassembly will be stored up on the pipe board falls to accepting the board, the pipeline can be cushioned by the flexile cushion, is favorable to reducing the pipeline and strikes and accept the board, causes the condition of accepting the board damage.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the top ends of the two groups of fixing plates are hinged with the bearing plates, the two groups of bearing plates are positioned above the track, the fixing plates are provided with driving components for driving the corresponding bearing plates to swing, when a pipeline needs to be placed on the track, the pipeline is placed on the two groups of bearing plates firstly, the driving components are driven to swing towards the bottom of the starting well, the two groups of bearing plates drive the pipeline to move towards the bottom of the starting well, and when the distance between the two groups of bearing plates is larger than the outer diameter of the pipeline, the pipeline can accurately fall into the track;
2. the air bags are arranged on the tracks, the bottom of the starting well is also provided with an air inflation and extraction assembly for driving the air bags to expand or contract, and the air inflation and extraction assembly is used for driving the air bags to expand, so that the pipelines can be firstly buffered by the air bags when falling down from between the two groups of bearing plates;
3. one end of the top tube plate, which is far away from the bearing plate, is connected with a rolling roller in a rolling manner, so that the friction force between the top tube plate and a pipeline is reduced, and the top tube plate can swing to the lower end of the tube storage plate more smoothly when the driving assembly drives the bearing plate to swing towards the wellhead of the starting well.
Drawings
FIG. 1 is a schematic structural diagram for illustrating construction of a push bench according to an embodiment of the present application.
Fig. 2 is a schematic structural view illustrating the airbag in an inflated state according to the embodiment of the present application.
Fig. 3 is a schematic structural diagram illustrating the airbag in a contracted state according to the embodiment of the present application.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Description of reference numerals:
1. an originating well; 11. a rear seat wall; 12. a jack; 2. a track beam; 21. crossties; 3. a pipe jacking machine; 31. a pipeline; 4. a fixing plate; 40. a hydraulic cylinder; 401. a main piston rod; 402. a main cylinder body; 41. a bearing plate; 411. a flexible pad; 42. an air bag; 43. an air charging and exhausting assembly; 431. a cylinder; 432. a drive rod; 5. a reservoir plate; 50. a through groove; 51. a frame; 52. a baffle plate; 53. a tube blocking plate; 6. a top tube plate; 61. a rolling roller.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a pipe jacking construction process, which comprises the following steps with reference to fig. 1 and 2:
s1: the prefabricated pipe laying mechanism and the two groups of track beams 2.
S2: cleaning a construction site, and digging an originating well 1 and an arriving well on the ground surface; and after the starting well 1 and the arriving well are dug, water stopping and reinforcing construction should be carried out on the starting well 1 and the arriving well in time.
S3: laying two groups of track beams 2 at the bottom of the starting well 1 in parallel to form a track for the pipeline 31 to be clamped in; when the track beam 2 is laid, a plurality of sleepers 21 are laid at the bottom of the starting well 1 to improve the supporting strength of the track beam 2.
S4: pouring a rear seat wall 11 on the wall of the starting well 1, and installing a jack 12 on the rear seat wall 11 after the rear seat wall 11 is solidified; the rear seat wall 11 should be of a reinforced concrete structure to ensure the overall strength of the rear seat wall 11.
S5: the pipe running mechanism is installed on the originating well 1 and the pipe push bench 3 is placed on the track.
S6: and starting the push bench 3 and the jack 12, pushing the push bench 3 by using the jack 12 to enable the push bench 3 to drill into the soil layer, and then retracting a piston rod of the jack 12.
S7: a single-section pipeline 31 is placed on a track formed by the two groups of track beams 2 through a pipeline placing mechanism, and a water inlet and outlet pipe and various pipelines used by the pipe jacking machine 3 are installed in the pipeline 31.
S8: starting the jack 12 and the push bench 3, and extending the piston rod out through the jack 12 so as to jack the pipeline 31 on the track and the push bench 3 into the underground soil layer; the piston rods of the jacks 12 are then retracted and the water inlet and outlet pipes and various lines within the pipes 31 are removed.
S9: and repeating S7 and S8 until all the pipelines 31 are paved.
S10: pipe jacking 3 and pipe lowering mechanism are dismantled and the originating well 1 is backfilled and reached.
Referring to fig. 2 and 3, the pipe discharging mechanism includes two sets of fixing plates 4 vertically arranged, the two sets of fixing plates 4 are respectively fixed on the opposite well wall of the starting well 1, the two sets of fixing plates 4 are symmetrically arranged about the vertical plane where the track is located, the top ends of the fixing plates 4 are horizontally hinged with bearing plates 41, the fixing plates 4 are respectively provided with driving components for driving the corresponding bearing plates 41 to swing, when the two sets of bearing plates 41 are in a horizontal state, the two sets of bearing plates 41 are located right above the track, and the two sets of bearing plates 41 cover the opening of the starting well 1.
Referring to fig. 2 and 3, the pipe discharging mechanism further includes an air bag 42 disposed on the track, the air bag 42 is fixed between the two sets of track beams 2, the top end of the air bag 42 is arc-shaped for the pipeline 31 to be clamped in, the axial direction of the top end of the air bag 42 is parallel to the extending direction of the track, and the originating well 1 is further provided with an air pumping and inflating assembly for driving the air bag 42 to expand or contract.
Referring to fig. 2 and 3, when the inflation and deflation assembly drives the bladder 42 to the inflated condition, the top of the bladder 42 is higher than the top of the rail, and when the inflation and deflation assembly 43 drives the bladder 42 to the deflated condition, the top of the bladder 42 is lower than the top of the rail. When the pipeline 31 is placed on the track, the corresponding bearing plates 41 are driven to swing by the driving assemblies on the two groups of fixing plates 4 until the distance between the two groups of bearing plates 41 is smaller than the outer diameter of the pipeline 31, the pipeline 31 is placed between the two groups of bearing plates 41, the corresponding bearing plates 41 are driven to swing towards the bottom of the starting well 1 by the driving assemblies, and meanwhile, the air bags 42 are driven to expand by the pumping and inflating assemblies; the two bearing plates 41 form a V-shaped structure in the swinging process to limit the pipeline 31 to roll, so that the pipeline 31 can be always positioned above the track; when the two bearing plates 41 swing to the extent that the distance between the ends of the two bearing plates 41 close to each other is larger than the outer diameter of the pipeline 31, the pipeline 31 falls off the bearing plates 41 and falls on the top end of the air bag 42, the air bag 42 is driven to shrink by the air inflation and exhaust assembly 43, and when the air bag 42 shrinks to the extent that the top end of the air bag is lower than the top end of the rail, the pipeline 31 can be clamped on the rail, so that the pipeline is placed. When the pipe 31 falls into the top end of the airbag 42 in the extreme expansion state, the two abutting plates are both positioned above the pipe 31, so that the two subsequent abutting plates 41 are not easy to interfere with the pipe 31 when swinging towards the wellhead of the originating well 1.
Referring to fig. 3 and 4, the tube placing mechanism further includes a frame 51 disposed on the ground, the frame 51 is provided with a tube storage plate 5, the tube storage plate 5 is obliquely erected on the frame 51, and the oblique lower end of the tube storage plate 5 faces one of the two receiving plates 41. The projection of the inclined direction of the tube storage plate 5 on the horizontal plane is vertical to the rotation axis of the bearing plate 41; a tube blocking plate 53 is also fixed at the inclined lower end of the tube storage plate 5 in a protruding manner, and the tube blocking plate 53 is vertical to the plane of the tube storage plate 5; the receiving plate 41 adjacent to the reservoir plate 5 is also provided with a push pipe assembly for pushing the pipe 31 located at the inclined lower end of the tube stopper plate 53 out of the reservoir plate 5. A certain number of pipelines 31 are stored by using the pipe storage rack, and the pipelines 31 at the inclined lower end of the pipe storage plate 5 are pushed out of the pipe storage plate 5 through the pipe jacking assembly, so that the pipelines 31 can roll towards the two groups of bearing plates 41, and the subsequent two groups of bearing plates 41 can drive the pipelines 31 to move towards the originating well 1 while swinging towards the originating well 1.
Referring to fig. 3 and 4, the push pipe assembly includes a push pipe plate 6, the push pipe plate 6 is fixed on the hinge end of the receiving plate 41 near the push pipe plate 5, and the push pipe plate 6 and the receiving plate 41 are arranged in parallel. When the bearing plate 41 is in a horizontal state, the top tube plate 6 is positioned below the inclined lower end of the tube storage plate 5; the tube storage plate 5 is provided with a through groove 50 for the top tube plate 6 to penetrate through, and the through groove 50 is arranged close to one end opening of the bearing plate 41. When the bearing plates 41 swing towards the bottom of the starting well 1 under the driving of the driving assembly, the pipe jacking plate 6 can tilt upwards and protrude out of the pipe storage plate 5, so that the pipes 31 at the inclined lower end of the pipe storage plate 5 are jacked up, and when the bottom of the jacked pipes 31 is higher than the top end of the pipe baffle plate 53, the pipes 31 roll towards the two groups of bearing plates 41 under the action of self gravity and fall between the two groups of bearing plates 41; meanwhile, the pipe jacking plate 6 is tilted out of the pipe storage plate 5 and can temporarily block the subsequent pipeline 31; when the subsequent receiving plate 41 is driven by the driving assembly to swing to a horizontal state, the top tube plate 6 swings to below the tube storage plate 5, so that the subsequent pipe 31 can continue to roll downward in the inclination direction of the tube storage plate 5 under the action of self gravity and abut against the tube blocking plate 53.
Referring to fig. 3 and 4, one end of the top tube plate 6, which is far away from the bearing plate 41, is rotatably connected with a rolling roller 61, the rotating direction of the rolling roller 61 is parallel to the rotation axis of the bearing plate 41, and by arranging the rolling roller 61, the friction between the end of the top tube plate 6, which is far away from the bearing plate 41, and the pipeline 31 is favorably reduced, so that the process of swinging the top tube plate 6 towards the bottom of the tube storage plate 5 is smoother. The tube storage plate 5 is also vertically fixed with two groups of baffle plates 52, and the two groups of baffle plates 52 are used for limiting the tubes 31 to slide out of two sides of the tube storage plate 5, so that the tubes 31 on the tube storage plate 5 can always roll along the inclined direction of the tube storage plate 5.
Referring to fig. 3 and 4, flexible pads 411 are fixed on both sides of the two sets of bearing plates 41 away from the bottom of the originating well 1, in this embodiment, the flexible pads 411 are rubber pads, so that the pipe 31 ejected out of the pipe storage plate 5 by the pipe jacking assembly can be buffered by the flexible pads 411, and the damage of the bearing plates 41 caused by the rigid collision between the pipe 31 and the bearing plates 41 is reduced.
Referring to fig. 2 and 3, the driving assembly includes a hydraulic cylinder 40 disposed on the fixed plate 4, the hydraulic cylinder 40 includes a main cylinder body 402 and a main piston rod 401, and ends of the main cylinder body 402 and the main piston rod 401, which are far away from each other, are respectively hinged to sides of the fixed plate 4 and the receiving plate 41, which are close to each other. When the main piston rod 401 is extended to the limit state, the receiving plate 41 is in a horizontal state. The swinging of the socket plate 41 can be controlled by controlling the main piston rod 401 of the hydraulic cylinder 40 to extend out of the main cylinder body 402 or retract into the main cylinder body 402, so that the swinging of the socket plate 41 is simpler and more convenient. The stroke of the hydraulic rod 40 is enough to make the top pipe plate 6 swing until the end of the top pipe plate 6 far away from the bearing plate 41 is higher than the top end of the pipe baffle plate 53. Facilitating better ejection of the tubes 31 of the inclined lower end of the tube storage plate 5 out of the tube storage plate 5.
Referring to fig. 2 and 3, the air charging and exhausting assembly 43 comprises air cylinders 431 vertically fixed on the bottom wall of the originating well 1, in the present embodiment, the air cylinders 431 are provided in four groups, two air cylinders 431 are provided in one group, two air cylinders 431 of each group correspond to one group of bearing plates 41, and two air cylinders 431 of each group are located below the corresponding bearing plates 41; the bottom of the cylinder 431 is communicated with the air bag 42 through an air outlet pipe. A driving rod 432 is arranged between the piston rod of the cylinder 431 and the corresponding bearing plate 41, two ends of the driving rod 432 in the length direction are respectively hinged with one side of the bearing plate 41 facing the bottom wall of the starting well 1 and the top end of the piston rod of the cylinder 431, and the rotation axes of the two ends of the driving rod 432 are parallel to the rotation axis of the bearing plate 41.
Referring to fig. 2 and 3, when the two sets of bearing plates 41 swing to the horizontal state, the piston rods of the cylinders 431 are both located at the top ends of the cylinders 431 and the airbags 42 are in the extreme contraction state; when the two sets of bearing plates 41 swing until the distance between the two sets of bearing plates 41 is larger than the outer diameter of the pipeline 31, the piston rods of the cylinders 431 are both positioned at the bottom ends of the cylinders 431, and the air bags 42 are in the extreme expansion state. Through the arrangement, in the process that the bearing plates 41 swing towards the bottom of the starting well 1, the piston of the cylinder 431 can be driven by the driving rod 432 and the piston rod of the cylinder 431 to move towards the bottom of the cylinder 431, so that gas is pressed into the air bag 42, the expansion of the air bag 42 is realized, and the pipeline 31 can fall to the top end of the air bag 42 when falling off from the two groups of bearing plates 41.
Referring to fig. 2 and 3, the operation of placing the pipeline 31 by the pipe placing mechanism is as follows:
the corresponding bearing plate 41 is driven to swing to a horizontal state by a driving component on the fixed plate 4; a plurality of pipes 31 are arranged in series on the reservoir plate 5.
The corresponding receiving plate 41 is driven to swing towards the bottom of the originating well 1 by a drive assembly on the fixed plate 4. The bearing plates 41 provided with the top tube plate 6 drive the top tube plate 6 to swing upwards and tilt out of the tube storage plate 5 in the swinging process, so that the pipelines 31 at the inclined lower end of the tube storage plate 5 are jacked up, and when the bottom of the pipeline 31 jacked up at the inclined lower end of the tube storage plate 5 is higher than the top end of the tube blocking plate 53, the pipelines 31 roll down between the two groups of bearing plates 41. Meanwhile, during the downward swing of the two sets of bearing plates 41, the piston of the cylinder 431 is driven by the driving rod 432 and the piston rod of the cylinder 431 to move towards the bottom of the cylinder 431, so that the gas is pressed into the air bag 42, and the air bag 42 is expanded.
When the two receiving plates 41 swing to a position where the distance between the two receiving plates 41 is larger than the outer diameter of the pipe 31, the pipe 31 is separated from the two receiving plates 41 and falls to the top end of the air bag 42.
The corresponding bearing plate 41 is driven by the driving assembly to swing towards the wellhead of the starting well 1, the piston of the cylinder 431 is driven by the driving rod 432 and the piston rod of the cylinder 431 to move towards the top end of the cylinder 431 in the swinging process of the bearing plate 41, so that the gas in the air bag 42 is pumped out, and when the air bag 42 is contracted until the top end of the air bag 42 is lower than the top end of the rail, the pipeline 31 can be clamped into the rail, so that the pipeline 31 can be accurately placed on the rail.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. A pipe jacking construction process is characterized in that: the method comprises the following steps:
s1: prefabricating a pipe placing mechanism and two groups of track beams (2);
s2: cleaning a construction site, and digging an originating well (1) and an arrival well on the ground surface;
s3: laying two groups of track beams (2) in parallel at the bottom of the starting well (1) to form a track for the pipeline (31) to be clamped in;
s4: pouring a rear seat wall (11) on the well wall of the starting well (1), and installing a jack (12) on the rear seat wall (11) after the rear seat wall (11) is solidified;
s5: installing a pipe laying mechanism on an originating well (1); and the push bench (3) is placed on the track;
s6: starting the push bench (3) and the jack (12), pushing the push bench (3) by the jack (12) to enable the push bench (3) to drill into the soil layer, and then retracting a piston rod of the jack (12);
s7: a single-section pipeline (31) is placed on a track formed by the two groups of track beams (2) through a pipe placing mechanism, and a water inlet pipe, a water outlet pipe and various pipelines used by the pipe jacking machine (3) are installed in the pipeline (31);
s8: starting the jack (12) and the pipe jacking machine (3), and extending the piston rod out through the jack (12) so as to jack the pipe jacking machine (3) and the pipeline (31) on the track into the underground soil layer; then the piston rod of the jack (12) is retracted and the water inlet and outlet pipes and various pipelines in the pipeline (31) are dismantled;
s9: repeating the steps S7 and S8 until the pavement of all the pipelines (31) is completed;
s10: the pipe jacking machine (3) and the pipe placing mechanism are dismantled, and the originating well (1) and the arriving well are backfilled;
the pipe discharging mechanism comprises two groups of fixing plates (4) which are vertically arranged in a starting well (1), the two groups of fixing plates (4) are symmetrically arranged on a vertical plane where a track is located, bearing plates (41) are hinged to the top ends of the fixing plates (4), the fixing plates (4) are provided with driving assemblies for driving the bearing plates (41) to swing, and when the two groups of bearing plates (41) are in a horizontal state, the two groups of bearing plates (41) are located above the track and cover a well mouth of the starting well (1);
the pipe releasing mechanism further comprises an air bag (42) arranged between the two groups of track beams (2), the top end of the air bag (42) is arc-shaped and is used for clamping the pipeline (31), the bearing plate (41) is further provided with an air inflation and extraction assembly (43) used for driving the air bag (42) to expand or contract, when the air inflation and extraction assembly (43) drives the air bag (42) to expand to a limit state, the top end of the air bag (42) is higher than the top end of the track beams (2), and when the air inflation and extraction assembly (43) drives the air bag (42) to contract to a limit state, the top end of the air bag (42) is lower than the top end of the track beams (2);
the driving assembly comprises a hydraulic cylinder (40) arranged on the fixing plate (4), the hydraulic cylinder (40) comprises a main cylinder body (402) and a main piston rod (401), one ends, far away from each other, of the main piston rod (401) and the main cylinder body (402) are hinged to one sides, close to each other, of the bearing plate (41) and the fixing plate (4) respectively, and the rotation axes of the main cylinder body (402) and the main piston rod (401) are parallel to the rotation axis of the bearing plate (41);
the air charging and exhausting assembly (43) comprises an air cylinder (431) vertically fixed at the bottom of the starting well (1), the air cylinder (431) is positioned below the bearing plate (41), the bottom of the air cylinder (431) is communicated with the air bag (42) through an air outlet pipe, and a driving rod (432) is further arranged between a piston rod of the air cylinder (431) and the bearing plate (41); the utility model discloses a pipeline expansion device, including actuating lever (432), bearing plate (41) and air cylinder (431), the piston rod of bearing plate (41) is articulated respectively at actuating lever (432) both ends, the axis of revolution at actuating lever (432) both ends all is parallel with the axis of revolution of bearing plate (41), works as when bearing plate (41) swing to the horizontality, air cylinder (431) piston rod is located air cylinder (431) top and gasbag (42) are in the limit contraction state, works as two sets of bearing plate (41) swing to two sets of when bearing plate (41) between the interval of bearing plate (41) is greater than pipeline (31) external diameter, air cylinder (431) piston rod is located air cylinder (431) bottom and gasbag (42) are in the limit expansion state.
2. The pipe jacking construction process according to claim 1, wherein the construction process comprises the following steps: the tube placing mechanism further comprises a tube storage plate (5) which is obliquely erected, and the tube storage plate (5) is positioned on one side of the bearing plate (41); the inclined lower end of the tube storage plate (5) faces the bearing plate (41), a tube blocking plate (53) is further protruded at the inclined lower end of the tube storage plate (5), and a tube jacking assembly used for enabling a pipeline (31) at the inclined lower end of the tube storage plate (5) to be ejected out of the tube storage plate (5) is further arranged on the bearing plate (41).
3. The pipe jacking construction process according to claim 2, wherein: the pipe jacking assembly further comprises a pipe jacking plate (6) arranged at the hinged end of the bearing plate (41), the pipe jacking plate (6) and the bearing plate (41) are arranged in parallel, when the bearing plate (41) is in a horizontal state, the pipe jacking plate (6) is located below the inclined lower end of the pipe storage plate (5), and the pipe storage plate (5) is provided with a through groove (50) for the pipe jacking plate (6) to extend out.
4. The pipe jacking construction process according to claim 3, wherein the construction process comprises the following steps: one end, far away from the bearing plate (41), of the top tube plate (6) is rotatably connected with a rolling roller (61), and the rotation axis of the rolling roller (61) is parallel to that of the bearing plate (41).
5. The pipe jacking construction process according to claim 4, wherein the construction process comprises the following steps: and flexible pads (411) are fixed on one surfaces of the bearing plates (41) departing from the bottom of the originating well (1).
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| CN202111152273.4A CN113803521B (en) | 2021-09-29 | 2021-09-29 | Pipe jacking construction process |
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| CA2488145A1 (en) * | 2004-11-22 | 2006-05-22 | Hydrotech Dynamics Ltd. | Pipeline ballast and method of use |
| CN103938703B (en) * | 2014-05-07 | 2015-11-25 | 中国五冶集团有限公司 | A kind of pipe jacking construction method |
| CN104455725B (en) * | 2014-09-18 | 2016-08-17 | 叶长青 | A kind of pipe jacking construction method |
| CN111088982A (en) * | 2018-10-24 | 2020-05-01 | 泰州同升布业有限公司 | Pipe jacking working well mounting structure |
| CN111173502A (en) * | 2020-03-19 | 2020-05-19 | 刘良加 | Pipe jacking excavation laser guiding measurement construction method for municipal engineering |
| CN111456195B (en) * | 2020-04-15 | 2021-08-10 | 广东城华工程咨询有限公司 | Municipal road sewer pipeline construction equipment and method |
| CN212616725U (en) * | 2020-05-12 | 2021-02-26 | 中建六局水利水电建设集团有限公司 | Low-resistance pipe jacking construction device |
| CN112212070A (en) * | 2020-09-11 | 2021-01-12 | 北京市政路桥股份有限公司 | Pipe jacking track in gravel stratum and pipe jacking construction method |
| CN112762230A (en) * | 2021-01-15 | 2021-05-07 | 北京金河水务建设集团有限公司 | Storage tank top pipe installation device and construction process thereof |
| CN113007445B (en) * | 2021-03-02 | 2022-04-15 | 惠州城际工程咨询有限公司 | Municipal works are pipeline leakage prevention device down worn |
| CN113294161B (en) * | 2021-06-22 | 2022-03-25 | 中交一公局集团有限公司 | Pipe jacking stable construction structure and construction method thereof |
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