CN214274668U

CN214274668U - Trenchless construction jacking pipe

Info

Publication number: CN214274668U
Application number: CN202120027571.XU
Authority: CN
Inventors: 曹海军; 许素青; 陈帅; 林康乐; 许杰; 孙斌; 洪建德; 胡雁泽; 胡剑
Original assignee: Hangzhou Municipal Construction Group Co ltd
Current assignee: Hangzhou Municipal Construction Group Co ltd
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-09-24
Anticipated expiration: 2031-01-06

Abstract

The application relates to the field of underground pipeline construction, in particular to a trenchless construction jacking pipe which comprises a pipe body formed by coaxially connecting a plurality of branch pipes, wherein two ends of each branch pipe are respectively provided with a bearing ring and an inserting ring, and two adjacent branch pipes are connected in an inserting and matching manner through the bearing rings and the inserting rings; the outer side wall of the bearing ring on the same branch pipe is flush with the outer side wall of the branch pipe, the inner side wall of the inserting ring is flush with the inner side wall of the branch pipe, the thicknesses of the bearing ring and the inserting ring in the axis direction of the branch pipe are the same, and when the bearing ring and the inserting ring are inserted and matched, the inner side wall of the bearing ring is attached to the outer side wall of the inserting ring; and a locking assembly for locking the bearing ring and the inserting ring is arranged between two adjacent branch pipes. Compared with the prior art, the connecting mode of the pipe-jacking body is changed, the phenomenon that the end part of the branch pipe in the pipe body is dislocated, slides and deforms and is damaged is avoided, and the pipe-jacking operation can be smoothly carried out.

Description

Trenchless construction jacking pipe

Technical Field

The application relates to the field of underground pipeline construction, in particular to a trenchless construction jacking pipe.

Background

The non-excavation technology is a new construction technology for laying, repairing and replacing pipelines by utilizing a rock-soil drilling technology under the condition of not excavating or only excavating a small number of operation pits, has the advantages of high efficiency, high quality, moderate cost, environmental friendliness, no influence on traffic, no environmental pollution and the like, and has the advantages of short construction period, low comprehensive cost and good safety compared with an excavation method under many conditions, thereby being a main means for urban municipal construction.

The pipe-jacking construction is a construction method of underground pipelines developed after shield construction, the pipe-jacking construction is that the friction force between the pipelines and the surrounding soil is overcome by means of jacking force generated by jacking equipment in a working pit, the pipelines are jacked into the soil according to the designed gradient, and after one section of the pipeline is jacked into the soil layer, the second section of the pipeline is jacked continuously. In the pipe jacking construction, by means of the thrust of a main jacking oil cylinder, an inter-pipeline junction and the like, a tool pipe or a heading machine is pushed from a working well through a soil layer until the tool pipe or the heading machine is hoisted in a receiving well, and a subsequent pipeline is buried between two pits after following the tool pipe or the heading machine, so that underground pipelines are laid under the non-excavation condition.

For example, patent No. CN210034629U discloses a trenchless construction jacking pipe, which comprises a pipe body, wherein an end of the pipe body is connected with a digging device, the digging device comprises a shell, a drill bit arranged at the end of the shell and a driving motor arranged in the shell; an annular baffle abutted against the shell is arranged in the tube body, a connecting column is arranged on the annular baffle, an arc-shaped groove is formed in the end part of the shell, an arc-shaped clamping rod is formed in the end part of the connecting column along the circumferential direction, and a clamping groove matched with the clamping rod is formed in the end part of the arc-shaped groove along the circumferential direction; a positioning screw is arranged in the shell and penetrates through the shell and extends into the clamping groove to be in threaded fit with the clamping rod.

Although above-mentioned push pipe structure is convenient for carry out excavating gear's installation and dismantlement, but the extension pipe is connected through pegging graft pipe and adapter with the pipe body, because the coupling ring in pegging graft pipe and the adapter passes through the mutual butt in inclined plane, the top thrust that the extension pipe received will transmit for the body through the frictional force between pegging graft pipe and the coupling ring, the extension pipe is being pushed the in-process in the soil layer by the top, the dislocation of taking place is slided very easily at its butt inclined plane with the coupling ring to peg graft pipe and coupling ring for it is impaired that peg graft pipe and coupling ring are out of shape easily, consequently, need improve.

Disclosure of Invention

In order to effectively transmit jacking force between the pipe bodies of the jacking pipe and avoid dislocation and slippage between the pipe bodies to cause deformation and damage of the pipe bodies, the application provides the trenchless construction jacking pipe.

The application provides a trenchless construction push pipe adopts following technical scheme:

a trenchless construction jacking pipe comprises a pipe body formed by coaxially connecting a plurality of branch pipes, wherein two ends of each branch pipe are respectively provided with a bearing ring and an inserting ring, and two adjacent branch pipes are connected in an inserting and matching manner through the bearing rings and the inserting rings; the outer side wall of the bearing ring on the same branch pipe is flush with the outer side wall of the branch pipe, the inner side wall of the inserting ring is flush with the inner side wall of the branch pipe, the thicknesses of the bearing ring and the inserting ring in the axis direction of the branch pipe are the same, and when the bearing ring and the inserting ring are inserted and matched, the inner side wall of the bearing ring is attached to the outer side wall of the inserting ring; and a locking assembly for locking the bearing ring and the inserting ring is arranged between two adjacent branch pipes.

Through adopting above-mentioned technical scheme, constructor pushes away the body through the mode with branch pipe grafting complex in going into the soil body, the top between the adjacent branch pipe pushes away the effort, will be through the butt of plug ring and adjacent branch pipe terminal surface, and the butt transmission between plug ring and the adjacent branch pipe terminal surface, can avoid taking place the dislocation between the branch pipe and slide and warp impaired, the connection stability of plug ring and butt ring between the adjacent branch pipe can be strengthened to the locking subassembly simultaneously, guarantee top thrust can be followed the axis of branch pipe and transmitted between adjacent branch pipe, make the branch pipe can be pushed away smoothly in the soil body and advance. Compared with the prior art, the connecting mode of the pipe jacking body is changed, the phenomenon that the end part of the branch pipe is dislocated and slides to cause the branch pipe to deform and be damaged is avoided, and the pipe jacking operation can be smoothly carried out.

Preferably, the locking subassembly includes a plurality of through-holes of circumference interval distribution on accepting the rampart, set up the caulking groove with a plurality of through-hole one-to-one on the lateral wall of plug-in ring, it is equipped with the card post that inserts the caulking groove to slide to inlay in the through-hole, the slip cover is equipped with the butt ring that orders about the card post and insert the caulking groove on the branch pipe, the one end that the caulking groove was kept away from to the card post stretches out the through-hole, and be equipped with and be used for the first inclined plane of contradicting with the butt ring, distance between first inclined plane and the branch pipe axis, the direction that is close to the butt ring on the same root branch pipe along the card post reduces gradually.

By adopting the technical scheme, when the branch pipes are pushed to advance in the soil body, the resistance of the abutting ring on the soil body can be tightly abutted against the first inclined surface of each clamping column, a component force towards the axis of the branch pipe can be generated on the first inclined surface, the clamping columns are further driven to be tightly abutted against the caulking grooves, and then the bearing ring and the inserting ring between the adjacent branch pipes are locked together.

Preferably, a spring for driving the clamping column to be separated from the caulking groove is arranged in the through hole.

Through adopting above-mentioned technical scheme, when the grafting ring inserts and accepts intra-annular, the spring orders about the card post and contracts in the through-hole, avoids the card post to become the grafting ring and inserts and accept intra-annular obstacle, makes things convenient for constructor's operation.

Preferably, the circumferential direction of one side of the bearing ring, which is far away from the same branch pipe, of the abutting ring is provided with a second inclined plane, and the distance between the second inclined plane and the axis of the branch pipe is gradually reduced along the direction of the abutting ring, which is far away from the bearing ring on the same branch pipe.

By adopting the technical scheme, the resistance of the abutting ring advancing in the soil body can be reduced due to the arrangement of the third inclined surface.

Preferably, the bottom of the caulking groove is provided with a third inclined plane abutted to the end of the clamping column, and the distance between the third inclined plane and the axis of the branch pipe is gradually increased along the direction of the inserting ring close to the adjacent branch pipe.

Through adopting above-mentioned technical scheme, when the card post supported tightly on the third inclined plane, the card post will produce the component force towards adjacent branch pipe on the third inclined plane, and two adjacent branch pipes will be inseparabler of butt.

Preferably, the cross section of the through hole is polygonal, and the through hole is clamped and matched with the through hole in an inserting mode.

Through adopting above-mentioned technical scheme, can avoid the card post to take place to rotate in the through-hole for the butt ring can support first inclined plane smoothly, will block the post and support tightly in the caulking groove.

Preferably, a sealing assembly is further arranged between every two adjacent branch pipes and comprises a first sealing ring arranged between the bearing ring and the end face of the adjacent branch pipe, and the first sealing ring is sleeved on the outer side wall of the inserting ring.

Through adopting above-mentioned technical scheme, first sealing washer can increase the leakproofness between accepting ring and the adjacent branch pipe terminal surface, can avoid the moisture content in the soil body to get into in the body from accepting between ring and the adjacent branch pipe terminal surface.

Preferably, the sealing assembly further comprises a second sealing ring arranged between the plug-in ring and the end face of the adjacent branch pipe, and the second sealing ring is embedded on the inner side wall of the bearing ring.

Through adopting above-mentioned technical scheme, the leakproofness between second sealing washer can increase grafting ring and the adjacent branch pipe terminal surface, avoids the liquid in the pipe body to leak away from the gap between grafting ring and the branch pipe terminal surface.

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

1. through the arrangement of the bearing ring and the inserting ring, the deformation and damage caused by the dislocation and slippage between the branch pipes can be avoided;

2. through the arrangement of the locking assembly, the jacking force can be transmitted between the adjacent branch pipes along the axes of the branch pipes, so that the branch pipes can be smoothly pushed to advance in the soil body;

3. through sealing assembly's setting, can increase the leakproofness of body at the branch pipe junction, not only can avoid the moisture content in the soil body to get into in the body, still can avoid the liquid in the body to take place the seepage at the branch pipe junction.

Drawings

FIG. 1 is a schematic cross-sectional view of a stent structure according to an embodiment of the present application;

FIG. 2 is a schematic view illustrating an embodiment of the present invention when two adjacent branch pipes are not connected;

FIG. 3 is a schematic diagram illustrating the operation condition when two adjacent branch pipes are connected according to the embodiment of the present application.

Description of reference numerals: 1. a pipe body; 11. a branch pipe; 12. a bearing ring; 13. a plug-in ring; 2. a locking assembly; 21. a through hole; 22. clamping the column; 23. caulking grooves; 24. a first inclined plane; 25. a butting ring; 26. a second inclined plane; 27. a spring; 28. a third inclined plane; 3. a seal assembly; 31. a first seal ring; 32. and a second seal ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a trenchless construction jacking pipe. Referring to fig. 1, the jacking pipe comprises a pipe body 1, the pipe body 1 is formed by splicing a plurality of branch pipes 11, a bearing ring 12 is arranged at one end of each branch pipe 11, an inserting ring 13 is arranged at the other end of each branch pipe 11, two adjacent branch pipes 11 are connected with the inserting ring 13 through the bearing ring 12 at the end part in an inserting matching mode, and a locking assembly 2 for locking the positions of the bearing ring 12 and the inserting ring 13 is further arranged between the two adjacent branch pipes 11.

Referring to fig. 1 and 2, the receiving rings 12 and the inserting rings 13 at both ends of the branch pipe 11 are coaxially and fixedly connected with the branch pipe 11 and integrally formed. The outer side wall of the bearing ring 12 is flush with the outer side wall of the branch pipe 11, and the annular wall thickness of the bearing ring 12 is half of the pipe wall thickness of the branch pipe 11; the inner side wall of the plug-in ring 13 is flush with the inner side wall of the branch pipe 11, the thickness of the ring wall of the plug-in ring 13 is also half of the thickness of the pipe wall of the branch pipe 11, and the thicknesses of the receiving ring 12 and the plug-in ring 13 in the axial direction of the branch pipe 11 are the same. When the receiving ring 12 and the inserting ring 13 of two adjacent branch pipes 11 are in inserting fit, the inner side wall of the receiving ring 12 is attached to the outer side wall of the inserting ring 13, and the receiving ring 12 and the inserting ring 13 can be abutted to the opposite end faces of the adjacent branch pipes 11, so that when the branch pipes 11 are pushed into the soil one by one, the jacking force between the adjacent branch pipes 11 will act on the end faces of the branch pipes 11, the jacking force can be effectively transmitted, and further the end parts of the branch pipes 11 can be prevented from being deformed and damaged due to dislocation and slippage.

Referring to fig. 2 and 3, the locking assembly 2 includes a plurality of through holes 21 opened on the circumferential wall of the receiving ring 12, the cross section of the through holes 21 is a regular quadrangle and communicates the inner and outer side walls of the receiving ring 12, the plurality of through holes 21 are circumferentially distributed on the circumferential wall of the receiving ring 12 at equal angular intervals, and the opening direction of each through hole 21 is the same as the radial direction of the receiving ring 12. All slip in every through-hole 21 and inlay the card post 22 that is equipped with and pegs graft complex with through-hole 21, a plurality of caulking grooves 23 have been seted up corresponding a plurality of through-holes 21 on the lateral wall of grafting ring 13, when the grafting ring 13 inserts in the accepting ring 12, a plurality of caulking grooves 23 are just right with a plurality of through-holes 21 respectively, card post 22 in every through-hole 21 all can insert in the caulking groove 23 that corresponds, many card posts 22 support tightly in corresponding caulking groove 23 simultaneously after, the accepting ring 12 between two adjacent branch pipes 11 and grafting ring 13 just are locked together, when branch pipe 11 is pushed away in the soil body, guarantee top thrust can be followed the axis of branch pipe 11 and transmitted between adjacent branch pipe 11, make branch pipe 11 can be pushed away to advance smoothly.

Every all slides on the branch pipe 11 and overlaps and be equipped with a butt ring 25, and the inside wall of butt ring 25 is laminated with the lateral wall of branch pipe 11. The one end that the caulking groove 23 was kept away from to the kelly 22 stretches out through-hole 21 to still be provided with the first inclined plane 24 with butt ring 25 butt, the distance between first inclined plane 24 and the branch pipe 11 axis reduces gradually along the direction that the kelly 22 is close to butt ring 25 on the same root branch pipe 11. One end of the branch pipe 11, which is provided with the inserting ring 13, enters the soil body first, when the branch pipe 11 is pushed in the soil body, the abutting ring 25 slides towards the direction close to the abutting ring 12 under the resistance until the abutting ring 25 abuts against the first inclined surface 24, the first inclined surface 24 enables the acting force of the abutting ring 25 on the clamping column 22 to generate a component force towards the axis of the branch pipe 11, and then each clamping column 22 abuts against the caulking groove 23.

In order to reduce the resistance of the abutting ring 25 advancing in the soil body, a second inclined surface 26 is circumferentially arranged on one side of the abutting ring 25, which is far away from the bearing ring 12 on the same branch pipe 11, and the distance between the second inclined surface 26 and the axis of the branch pipe 11 is gradually reduced along the direction that the abutting ring 25 is far away from the bearing ring 12 on the same branch pipe 11. Each through hole 21 is further provided with a spring 27 sleeved on the clamping column 22, the spring 27 is used for driving the clamping column 22 to retract into the through hole 21, and when the clamping column 22 is inserted into the embedded groove 23, the spring 27 is compressed. The spring 27 prevents the plug ring 13 from being inserted into the receiving ring 12 by the locking pin 22, and the receiving ring 12 and the plug ring 13 can smoothly abut against the end face of the adjacent branch pipe 11.

The bottom of each caulking groove 23 on the plugging ring 13 is also provided with a third inclined surface 28, and the distance between the third inclined surface 28 and the axis of the branch pipe 11 is gradually increased along the direction that the plugging ring 13 approaches the adjacent branch pipe 11. When the jamming cylinder 22 abuts against the third inclined surface 28, the jamming cylinder 22 will generate a component force on the third inclined surface 28 toward the adjacent branch pipe 11, and the adjacent two branch pipes 11 will abut more tightly.

Referring to fig. 3, a sealing assembly 3 is further disposed between two adjacent branch pipes 11 to increase the sealing performance at the junction of the adjacent branch pipes 11. The sealing component 3 comprises a first sealing ring 31 sleeved on the outer side wall of the inserting ring 13, when the inserting ring 13 is inserted and tightly connected into the bearing ring 12, the bearing ring 12 can drive the first sealing ring 31 to abut against the end face of the branch pipe 11, so that moisture in soil is prevented from entering the pipe body 1 from the end face of the bearing ring 12 and the end face of the adjacent branch pipe 11, and the sealing performance of the outer side wall of the pipe body 1 at the joint of the branch pipe 11 is improved. Similarly, every bears the inside wall of ring 12 to inlay and is equipped with a second sealing washer 32, and when grafting ring 13 inserted tightly in accepting ring 12, grafting ring 13 will order about second sealing washer 32 and support tightly on the terminal surface of branch pipe 11, and the gap seepage of liquid follow grafting ring 13 and branch pipe 11 terminal surface in avoiding body 1 is gone out, has increased the leakproofness of body 1 inside wall at the branch pipe 11 junction.

The implementation principle of the embodiment of the application is as follows: constructor pushes up branch pipe 11 into the soil body one by one through the grafting cooperation of accepting ring 12 and grafting ring 13, accepts ring 12 and grafting ring 13 and will support the terminal surface of adjacent branch pipe 11 respectively, and the resistance that pushing force and the soil body that branch pipe 11 received were applyed will be through will being used in on the terminal surface of branch pipe 11, and the pushing force of pushing between the branch pipe 11 can effectively transmit, and then can avoid 11 tip of branch pipe to take place the dislocation and slide and warp impaired.

After the branch pipes 11 are pushed into the soil body, the abutting ring 25 slides under the resistance of the soil body and abuts against the first inclined surface 24 of each clamping column 22, the clamping columns 22 on the bearing ring 12 abut against the embedding grooves 23 on the inserting ring 13, the bearing ring 12 and the inserting ring 13 between two adjacent branch pipes 11 are locked together, and the transmission of pushing force between the adjacent branch pipes 11 along the axis of the branch pipes 11 can be ensured, so that the branch pipes 11 can be pushed forward smoothly in the soil body.

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

1. The utility model provides a trenchless construction push pipe which characterized in that: the pipe comprises a pipe body (1) formed by connecting a plurality of branch pipes (11) in a coaxial manner, wherein two ends of each branch pipe (11) are respectively provided with a bearing ring (12) and an inserting ring (13), and two adjacent branch pipes (11) are connected in an inserting and matching manner through the bearing rings (12) and the inserting rings (13); the outer side wall of the bearing ring (12) on the same branch pipe (11) is flush with the outer side wall of the branch pipe (11), the inner side wall of the plug-in ring (13) is flush with the inner side wall of the branch pipe (11), the thicknesses of the bearing ring (12) and the plug-in ring (13) in the axis direction of the branch pipe (11) are the same, and when the bearing ring (12) and the plug-in ring (13) are in plug-in fit, the inner side wall of the bearing ring (12) is attached to the outer side wall of the plug-in ring (13); a locking assembly (2) for locking the bearing ring (12) and the inserting ring (13) is also arranged between two adjacent branch pipes (11).

2. The trenchless construction jacking pipe of claim 1, wherein: locking Assembly (2) include a plurality of through-holes (21) of circumference interval distribution on bearing ring (12) rampart, offer on the lateral wall of grafting ring (13) caulking groove (23) with a plurality of through-hole (21) one-to-one, sliding fit is equipped with card post (22) of inserting caulking groove (23) in through-hole (21), sliding fit is equipped with the butt ring (25) of ordering about card post (22) and inserting caulking groove (23) on branch pipe (11), the one end that caulking groove (23) were kept away from to card post (22) stretches out through-hole (21), and be equipped with first inclined plane (24) that are used for conflicting with butt ring (25), distance between first inclined plane (24) and branch pipe (11) axis, the direction that is close to butt ring (25) on the same root branch pipe (11) along card post (22) reduces gradually.

3. The trenchless construction jacking pipe of claim 2, wherein: a spring (27) used for driving the clamping column (22) to be separated from the embedded groove (23) is arranged in the through hole (21).

4. The trenchless construction jacking pipe of claim 2, wherein: one side circumference that the supporting ring (12) on the same root branch pipe (11) was kept away from to the ring (25) that supports is equipped with second inclined plane (26), and the distance between second inclined plane (26) and branch pipe (11) axis reduces gradually along the direction that supporting ring (12) on the same root branch pipe (11) was kept away from to the ring (25) that supports.

5. The trenchless construction jacking pipe of claim 2, wherein: the bottom of the caulking groove (23) is provided with a third inclined plane (28) which is abutted against the end part of the clamping column (22), and the distance between the third inclined plane (28) and the axis of the branch pipe (11) is gradually increased along the direction that the inserting ring (13) is close to the adjacent branch pipe (11).

6. The trenchless construction jacking pipe of claim 2, wherein: the cross section of the through hole (21) is polygonal and is clamped and matched with the through hole (21) in an inserting manner.

7. The trenchless construction jacking pipe of claim 1, wherein: two adjacent still be equipped with seal assembly (3) between branch pipe (11), seal assembly (3) are including establishing first sealing washer (31) between holding ring (12) and adjacent branch pipe (11) terminal surface, and first sealing washer (31) cover is established on the lateral wall of pegging graft ring (13).

8. The trenchless construction jacking pipe of claim 7, wherein: the sealing assembly (3) further comprises a second sealing ring (32) arranged between the plug-in ring (13) and the end face of the adjacent branch pipe (11), and the second sealing ring (32) is embedded on the inner side wall of the bearing ring (12).