CN110440052B - Movable smooth jacking mechanism for pipe jacking construction - Google Patents
Movable smooth jacking mechanism for pipe jacking construction Download PDFInfo
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- CN110440052B CN110440052B CN201910732132.6A CN201910732132A CN110440052B CN 110440052 B CN110440052 B CN 110440052B CN 201910732132 A CN201910732132 A CN 201910732132A CN 110440052 B CN110440052 B CN 110440052B
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- jacking
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention provides a movable smooth jacking mechanism for pipe jacking construction, which comprises a pipe jacking push block, a connecting bolt and an adjusting connecting block, wherein the pipe jacking push block is fixedly connected with the connecting bolt; the bearing base is of an L-shaped structure, and the track sliding chute is arranged on the end face of the top of the bearing base through a bolt; the track sliding groove is of a long groove-shaped structure, the front side and the rear side of the track sliding groove are respectively provided with a sliding hole, and the sliding holes are communicated with the inside of the track sliding groove; the cylinder body supporting frame is of a frame structure, two oil cylinders are arranged in the cylinder body supporting frame in an up-down arrangement mode, and the cylinder body supporting frame is positioned at the top of the bearing base; the pipe jacking device is beneficial to splitting and moving the left part and the right part of the pipe jacking push block according to the diameter of a required construction pipeline, so that the left part and the right part of the pipe jacking push block can be attached to the left end and the right end of the pipe orifice of the pipeline, the butt joint effect of the pipe jacking push block and the pipeline is guaranteed, and the pipe jacking device is better suitable for construction operation of pipelines with different diameters.
Description
Technical Field
The invention belongs to the technical field of pipe jacking construction, and particularly relates to a movable smooth jacking mechanism for pipe jacking construction.
Background
In the technical field of tunnel construction, the construction operation of pipe jacking is often involved, the pipe jacking construction is mainly characterized in that the friction force between a pipe joint and surrounding soil is overcome by means of the thrust of an oil cylinder to the pipe joint, the pipe joint is jacked into a preset position in a tunnel from a tunnel portal, and finally the oil cylinder is retracted; the smooth jacking mechanism for pipe jacking construction can refer to the patent No. CN104358927A, and mainly comprises a jack, a jack support, a slide rail and a pipe jacking drill bit, wherein the jack is arranged on the jack support, the pipe jacking drill bit is arranged on the slide rail, a telescopic rod of the jack faces the pipe jacking drill bit, an annular backrest is arranged between the jack and the pipe jacking drill bit and clings to the end part of the pipe jacking drill bit, the front end of the pipe jacking drill bit is connected with a water inlet pipe and a mud outlet pipe, and hoisting equipment is also arranged above the slide rail; the smooth jacking mechanism for pipe jacking construction can refer to the patent No. CN208184738U, and mainly comprises a back wall, a back steel plate, a pipe jacking machine, a guide rail, a hydraulic jack bracket and a heading machine which are sequentially arranged in a foundation pit from back to front, wherein the pipeline can be stably conveyed in place by using the hydraulic jack bracket, the hanging strip can be withdrawn, the surface damage of the pipeline is prevented, and the pipeline is pushed forwards section by section through the synergistic action of the pipe jacking machine and the heading machine, so that the pipe jacking construction is completed; present similar level and smooth climbing mechanism for push pipe construction when using, adjustable effect is relatively poor, mostly is the integral structure, can't be according to required construction pipe joint diameter, advances the position to level and smooth climbing mechanism front end for push pipe construction and adjusts, can only be applicable to single specification pipe joint construction and impel the user demand, when other specification pipe joints construction operations, need supporting use special level and smooth climbing mechanism for push pipe construction, lead to push pipe construction cost to increase.
Disclosure of Invention
In order to solve the technical problems, the invention provides a movable type smooth jacking mechanism for pipe jacking construction, which aims to solve the problems that when the conventional similar smooth jacking mechanism for pipe jacking construction is used, the adjustable effect is poor, the mechanism is mostly of an integrated structure, the pushing part at the front end of the smooth jacking mechanism for pipe jacking construction cannot be adjusted according to the diameter of a required construction pipe joint, the pushing use requirement can only be met for the construction of a single-specification pipe joint, and when the pipe joints of other specifications are in construction operation, a special smooth jacking mechanism for pipe jacking construction needs to be matched and used, so that the construction cost of pipe jacking is increased.
The invention is used for the purpose and the effect of a movable smooth jacking mechanism for pipe jacking construction, and is achieved by the following specific technical means:
a movable smooth jacking mechanism for pipe jacking construction comprises a bearing base, a track chute, a sliding hole, a cylinder body supporting frame, a limiting bolt, an oil cylinder, a pipe jacking push block, a connecting bolt and an adjusting connecting block; the bearing base is of an L-shaped structure, and the track sliding chute is arranged on the end face of the top of the bearing base through a bolt; the track sliding groove is of a long groove-shaped structure, the front side and the rear side of the track sliding groove are respectively provided with a sliding hole, and the sliding holes are communicated with the inside of the track sliding groove; the cylinder body supporting frame is of a frame structure, two oil cylinders are arranged in the cylinder body supporting frame in an up-down arrangement mode, and the cylinder body supporting frame is positioned at the top of the bearing base; the number of the limiting bolts is twelve, and the limiting bolts are respectively in threaded connection with the bottoms of the two cylinder body supporting frames; the oil cylinders are divided into a left group and a right group, the two groups of oil cylinders are respectively arranged in the two cylinder body supporting frames, and the oil cylinders are communicated with an external control pipeline; the left side and the right side of the rear end of the pipe jacking push block are respectively connected with two oil cylinders, and the pipe jacking push block is positioned at the front ends of the four oil cylinders; the adjusting connecting block is arranged at the butt joint position of the upper end and the lower end of the top pipe pushing block through a connecting bolt.
Furthermore, the push pipe pushing block is divided into a left part and a right part, the left part and the right part of the push pipe pushing block are both arc-shaped block structures, and the left part and the right part of the push pipe pushing block are symmetrically spliced to form an annular structure.
Furthermore, the connecting bolts are divided into an upper group and a lower group, the two groups of connecting bolts are respectively arranged at the butt joint positions of the upper end and the lower end of the push-top block, and the left part and the right part of the push-top block are connected together through the connecting bolts.
Furthermore, the adjusting connecting blocks are of rectangular block structures and are mutually butted and attached together; the left side and the right side of the adjusting connecting block are respectively attached to the left part and the right part of the push block of the jacking pipe, and the connecting bolt penetrates through the inside of the adjusting connecting block.
Furthermore, the oil cylinder is horizontally arranged in the cylinder body supporting frame, the rear end of the oil cylinder is attached to the front end face of the bearing base, and a push rod at the front end of the oil cylinder is connected with the rear end of the push block of the jacking pipe through a bolt.
Furthermore, the number of the track sliding chutes is six, and the six track sliding chutes are respectively arranged at the left end and the right end of the top end surface of the bearing base; the cylinder body support frame has two positions, the bottom of the cylinder body support frame is respectively connected in the three track sliding grooves in a sliding mode, and the two cylinder body support frames are installed at the left end and the right end of the top of the bearing base through the track sliding grooves.
Furthermore, the front end and the rear end of the bottom of the cylinder body supporting frame are respectively in threaded connection with two limiting bolts, the limiting bolts are respectively in sliding connection in sliding holes formed in the front side and the rear side of the track sliding groove, and the limiting bolts are attached to the outer end faces of the front side and the rear side of the track sliding groove.
Compared with the prior art, the invention has the following beneficial effects:
1. the left and right parts of the push pipe push block are arranged, so that the left and right parts of the push pipe push block can be detached and moved according to the diameter of a required construction pipeline, the left and right parts of the push pipe push block can be attached to the left and right ends of the pipe orifice of the pipeline, the butt joint effect of the push pipe push block and the pipeline is guaranteed, and the push pipe push block is better suitable for construction operation of pipelines with different diameters; and the upper and lower two groups of connecting bolts can be matched with the connecting bolts for use, so that the upper and lower butt joint parts of the left and right parts of the push-top pipe push block are fixedly connected together, and the stability of the left and right parts of the push-top pipe push block in use is guaranteed.
2. The arrangement of the track sliding chute and the cylinder body supporting frame is beneficial to the sliding adjustment of the cylinder body supporting frame at the left and right positions at the top of the bearing base, so that the oil cylinder in the cylinder body supporting frame drives the left and right parts of the adjusting connecting block to slide and adjust towards the left and right sides, and the adjustment operation of the interval width of the left and right parts of the adjusting connecting block is realized; and the use of cooperation spacing bolt can be after cylinder body support frame sliding adjustment finishes, rotates the spacing bolt in cylinder body support frame bottom, makes the laminating of spacing bolt both sides around the track spout, carries out spacing fixed to cylinder body support frame bottom through spacing bolt, stability when the guarantee cylinder body support frame uses.
Drawings
Fig. 1 is a schematic axial view of the present invention.
Fig. 2 is a rear axial view of the present invention.
Fig. 3 is a schematic view of the adjustment structure of the present invention.
Fig. 4 is a schematic view of the cylinder support bracket mounting structure of the present invention.
Fig. 5 is a schematic view of a structure for separating the cylinder body supporting frame and the track sliding groove.
Fig. 6 is a schematic cross-sectional structure of the track runner of the present invention.
FIG. 7 is a schematic view of a disassembled structure of the push bench of the present invention.
FIG. 8 is an overall schematic view of the connection structure of the push bench and the adjusting connection block of the present invention.
FIG. 9 is a schematic view of the disassembly of the connection structure of the push bench and the adjusting connection block of the present invention.
Fig. 10 is a schematic view of the structure of the adjusting connecting block of the invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a load-bearing base; 2. a track runner; 201. a slide hole; 3. a cylinder body support frame; 4. a limit bolt; 5. an oil cylinder; 6. a pipe jacking push block; 7. a connecting bolt; 8. adjusting the connecting block.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in figures 1 to 9:
the invention provides a movable smooth jacking mechanism for pipe jacking construction, which comprises a bearing base 1, a track chute 2, a slide hole 201, a cylinder body support frame 3, a limiting bolt 4, an oil cylinder 5, a pipe jacking push block 6, a connecting bolt 7 and an adjusting connecting block 8, wherein the bearing base is provided with a bearing groove; the bearing base 1 is of an L-shaped structure, and the track chute 2 is arranged on the top end face of the bearing base 1 through a bolt; the track sliding groove 2 is of a long groove-shaped structure, the front side and the rear side of the track sliding groove 2 are respectively provided with a sliding hole 201, and the sliding holes 201 are communicated with the inside of the track sliding groove 2; the cylinder body supporting frame 3 is of a frame structure, two oil cylinders 5 are arranged in the cylinder body supporting frame 3 in an up-down arrangement mode, and the cylinder body supporting frame 3 is located at the top of the bearing base 1; the number of the limiting bolts 4 is twelve, and the limiting bolts 4 are respectively in threaded connection with the bottoms of the two cylinder body supporting frames 3; the oil cylinders 5 are divided into a left group and a right group, the two groups of oil cylinders 5 are respectively arranged in the two cylinder body supporting frames 3, and the oil cylinders 5 are communicated with an external control pipeline; the left side and the right side of the rear end of the pipe jacking push block 6 are respectively connected with the two oil cylinders 5, and the pipe jacking push block 6 is positioned at the front ends of the four oil cylinders 5; the adjusting connecting block 8 is arranged at the butt joint position of the upper end and the lower end of the top pipe pushing block 6 through a connecting bolt 7.
The push pipe pushing block 6 is divided into a left part and a right part, the left part and the right part of the push pipe pushing block 6 are both arc-shaped block structures, and the left part and the right part of the push pipe pushing block 6 are symmetrically spliced into an annular structure; the concrete effect can be according to required construction pipeline diameter, and two parts about ejector pad ejector 6 are split and are removed, make ejector pad 6 about two parts can laminate both ends about the pipeline mouth of pipe, ensure ejector pad 6 and pipeline butt joint effect, the better different diameter pipeline construction operations that are applicable to.
The connecting bolts 7 are divided into an upper group and a lower group, the two groups of connecting bolts 7 are respectively arranged at the butt joint parts of the upper end and the lower end of the top pipe pushing block 6, and the left part and the right part of the top pipe pushing block 6 are mutually connected through the connecting bolts 7; the concrete function is that the upper and lower butt joint parts of the left and right parts of the push block 6 are fixedly connected together through the upper and lower groups of connecting bolts 7, so that the stability of the left and right parts of the push block 6 in use is guaranteed.
The adjusting connecting blocks 8 are of rectangular block structures, and the adjusting connecting blocks 8 are mutually butted and attached together; the left side and the right side of the adjusting connecting block 8 are respectively attached to the left part and the right part of the top pipe pushing block 6, and the connecting bolt 7 penetrates through the adjusting connecting block 8; the pipe jacking device has the specific effects that the adjusting connecting blocks 8 with proper quantity are assembled at the split positions of the left part and the right part of the pipe jacking push block 6 according to the split widths of the left part and the right part of the pipe jacking push block 6, the adjusting connecting blocks 8 are fixed through the connecting bolts 7, the left part and the right part of the pipe jacking push block 6 in the split state are connected together through the adjusting connecting blocks 8, and the stress effect of connection of the left part and the right part of the pipe jacking push block 6 is guaranteed.
The oil cylinder 5 is horizontally arranged in the cylinder body supporting frame 3, the rear end of the oil cylinder 5 is attached to the front end face of the bearing base 1, and a push rod at the front end of the oil cylinder 5 is connected with the rear end of the top pipe push block 6 through a bolt; the concrete effect, accessible bearing base 1 supports 5 rear ends of hydro-cylinder, reduces the 3 atress effects of hydro-cylinder 5 bottom cylinder body support frame, makes the produced thrust of hydro-cylinder 5 pass through push pipe ejector pad 6 better transmit the cement pipeline in, the guarantee cement pipeline impels the construction effect.
The number of the track sliding chutes 2 is six, and the six track sliding chutes 2 are respectively arranged at the left end and the right end of the top end face of the bearing base 1; the cylinder body supporting frames 3 are arranged at two positions, the bottoms of the cylinder body supporting frames 3 are respectively connected in three track sliding chutes 2 in a sliding manner, and the two cylinder body supporting frames 3 are arranged at the left end and the right end of the top of the bearing base 1 through the track sliding chutes 2; the sliding adjusting device has the specific effects that the sliding adjustment can be carried out on the left and right cylinder body supporting frames 3 at the top of the bearing base 1, so that the oil cylinders 5 in the cylinder body supporting frames 3 drive the left and right parts of the adjusting connecting block 8 to slide and adjust towards the left and right sides, and the operation of adjusting the interval width of the left and right parts of the adjusting connecting block 8 is realized.
The front end and the rear end of the bottom of the cylinder body supporting frame 3 are respectively in threaded connection with two limiting bolts 4, the limiting bolts 4 are respectively in sliding connection with sliding holes 201 formed in the front side and the rear side of the track sliding groove 2, and the limiting bolts 4 are attached to the outer end faces of the front side and the rear side of the track sliding groove 2; concrete effect can be after 3 sliding adjustment of cylinder body support frame finishes, rotates 3 bottom spacing bolts 4 of cylinder body support frame, makes 4 laminating of spacing bolts both sides around track spout 2, carries out spacing fixed, the stability of guarantee cylinder body support frame 3 when using through spacing bolts 4 to 3 bottoms of cylinder body support frame.
The specific use mode and function of the embodiment are as follows:
when the device is used, a constructor rotates the limiting bolt 4 at the bottom of the cylinder body supporting frame 3 to separate the limiting bolt 4 from the outer wall of the track sliding groove 2, and rotates the connecting bolts 7 arranged at the upper end and the lower end of the push-pipe pushing block 6 to separate the connecting bolts 7 from the push-pipe pushing block 6; next, according to the diameter of a cement pipeline to be constructed, a constructor carries out sliding adjustment on the left and right cylinder body supporting frames 3 at the top of the bearing base 1, so that the oil cylinder 5 inside the cylinder body supporting frame 3 drives the left and right parts of the adjusting connecting block 8 to slide and adjust the left and right parts of the adjusting connecting block 8, and the interval width of the left and right parts of the adjusting connecting block 8 is adjusted; after the interval width of the left part and the right part of the connecting block 8 is adjusted to meet the pushing use requirement of a cement pipeline, a constructor rotates the limiting bolts 4 at the bottom of the cylinder body supporting frame 3 to enable the limiting bolts 4 to be attached to the front side and the rear side of the track sliding groove 2, and the bottom of the cylinder body supporting frame 3 is limited and fixed through the limiting bolts 4, so that the stability of the cylinder body supporting frame 3 in use is guaranteed; then, the constructor assembles a proper amount of adjusting connecting blocks 8 at the split positions of the left part and the right part of the pipe-jacking push block 6, connects the left end and the right end of the adjusting connecting blocks 8 with the left part and the right part of the pipe-jacking push block 6 through connecting bolts 7, ensures the connection stress effect of the left part and the right part of the pipe-jacking push block 6, and can start the oil cylinder 5, so that the oil cylinder 5 drives the pipe-jacking push block 6 to move forwards and be attached to the pipe orifice of the cement pipeline, and pushes the cement pipeline.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. The utility model provides a portable level and smooth climbing mechanism for push pipe construction which characterized in that: the movable smooth jacking mechanism for pipe jacking construction comprises a bearing base (1), a track sliding chute (2), a sliding hole (201), a cylinder body supporting frame (3), a limiting bolt (4), an oil cylinder (5), a pipe jacking push block (6), a connecting bolt (7) and an adjusting connecting block (8); the bearing base (1) is of an L-shaped structure, and the track sliding chute (2) is installed on the top end face of the bearing base (1) through a bolt; the track sliding chute (2) is of a long-groove-shaped structure, the front side and the rear side of the track sliding chute (2) are respectively provided with a sliding hole (201), and the sliding holes (201) are communicated with the inside of the track sliding chute (2); the cylinder body supporting frame (3) is of a frame structure, two oil cylinders (5) are arranged in the cylinder body supporting frame (3) in an up-down arrangement mode, and the cylinder body supporting frame (3) is located at the top of the bearing base (1); the number of the limiting bolts (4) is twelve, and the limiting bolts (4) are respectively in threaded connection with the bottoms of the two cylinder body supporting frames (3); the oil cylinders (5) are divided into a left group and a right group, the two groups of oil cylinders (5) are respectively arranged in the two cylinder body supporting frames (3), and the oil cylinders (5) are communicated with an external control pipeline; the left side and the right side of the rear end of the pipe-jacking push block (6) are respectively connected with the two oil cylinders (5), and the pipe-jacking push block (6) is positioned at the front ends of the four oil cylinders (5); the adjusting connecting block (8) is arranged at the butt joint position of the upper end and the lower end of the top pipe pushing block (6) through a connecting bolt (7).
2. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: the push pipe push block (6) is divided into a left part and a right part, the left part and the right part of the push pipe push block (6) are both arc-shaped block structures, and the left part and the right part of the push pipe push block (6) are symmetrically spliced into an annular structure.
3. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: the connecting bolts (7) are divided into an upper group and a lower group, the two groups of connecting bolts (7) are respectively arranged at the butt joint parts of the upper end and the lower end of the push-pipe pushing block (6), and the left part and the right part of the push-pipe pushing block (6) are mutually connected through the connecting bolts (7).
4. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: the adjusting connecting blocks (8) are of rectangular block structures, and the adjusting connecting blocks (8) are mutually butted and attached together; the left side and the right side of the adjusting connecting block (8) are respectively attached to the left part and the right part of the top pipe pushing block (6), and the connecting bolt (7) penetrates through the inside of the adjusting connecting block (8).
5. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: the oil cylinder (5) is horizontally arranged in the cylinder body supporting frame (3), the rear end of the oil cylinder (5) is attached to the front end face of the bearing base (1), and a push rod at the front end of the oil cylinder (5) is connected with the rear end of the top pipe push block (6) through a bolt.
6. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: the number of the track sliding chutes (2) is six, and the six track sliding chutes (2) are respectively arranged at the left end and the right end of the top end surface of the bearing base (1); the cylinder body support frame (3) has two parts, the bottom of the cylinder body support frame (3) is respectively connected in the three track sliding grooves (2) in a sliding mode, and the two cylinder body support frames (3) are installed at the left end and the right end of the top of the bearing base (1) through the track sliding grooves (2).
7. The mobile smooth jacking mechanism for pipe jacking construction according to claim 1, wherein: two ends are in threaded connection with two limiting bolts (4) respectively around the bottom of the cylinder body supporting frame (3), the limiting bolts (4) are respectively in sliding connection with sliding holes (201) formed in the front side and the rear side of the track sliding groove (2), and the limiting bolts (4) are attached to the outer end faces of the front side and the rear side of the track sliding groove (2).
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| CN201910732132.6A CN110440052B (en) | 2019-08-09 | 2019-08-09 | Movable smooth jacking mechanism for pipe jacking construction |
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| CN111502682B (en) * | 2020-04-02 | 2022-01-07 | 中铁四局集团第三建设有限公司 | Trenchless pipe jacking construction device and construction method |
| CN111608666B (en) * | 2020-04-16 | 2021-08-27 | 华北水利水电大学 | Vibration pipe jacking machine for ultra-large section pipe jacking tunnel construction and construction method |
| 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 |
| CN112696529B (en) * | 2020-12-30 | 2022-06-17 | 浙江大陆建筑特种工程有限公司 | Small-pipe-diameter pipe jacking construction structure |
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| CN107420640A (en) * | 2017-09-07 | 2017-12-01 | 北京市常青市政工程有限公司 | Attachment means between jacking construction end-protecting device and jacking construction steel pipe |
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| CN107975374A (en) * | 2017-11-24 | 2018-05-01 | 上海隧道工程有限公司 | The main jacking mechanism of pipe curtain subsurface excavation method jacking construction |
| CN208184738U (en) * | 2018-05-18 | 2018-12-04 | 北京翔鲲水务建设有限公司 | jacking construction structure |
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