CN218439404U - Underground-excavated jacking pipe fixing base - Google Patents
Underground-excavated jacking pipe fixing base Download PDFInfo
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- CN218439404U CN218439404U CN202120572817.1U CN202120572817U CN218439404U CN 218439404 U CN218439404 U CN 218439404U CN 202120572817 U CN202120572817 U CN 202120572817U CN 218439404 U CN218439404 U CN 218439404U
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Abstract
The utility model relates to an undercut push pipe fixed baseplate, its guided way including fixed setting, the guided way is provided with two along its width direction interval, set firmly a plurality of fixed cross rails that set up along its length direction interval on the guided way, two be equipped with the bolster between the guided way, bolster one end is fixed, and the other end can contradict with the push pipe lateral surface of placing on the guided way and compress tightly, the bolster can save the energy when highly can produce deformation and bolster highly reduce along vertical direction, the bolster is provided with three on no longer the same straight line at least. This application has the effect that reduces the striking between push pipe and the guide rail.
Description
Technical Field
The application relates to the field of pipe jacking construction, in particular to a secretly excavated pipe jacking fixed base.
Background
With the vigorous development of underground tunnel engineering, the whole process of safe excavation and lining, high tunneling speed, propelling, unearthing, splicing lining and the like can realize automatic operation, the construction labor intensity is low, and ground traffic, facilities, underground pipeline facilities and other advantages are not influenced.
The pipe jacking construction is that the friction force between the pipeline and the surrounding soil is overcome by means of jacking force generated by jacking equipment in a working pit, the pipeline is jacked into the soil according to a designed gradient, and earthwork is transported away; and after the pipe is jacked into the soil layer, the second pipe is jacked continuously.
The principle is that by means of the thrust of the main top oil cylinder, the pipeline and the relay, the tool pipe or the development machine is pushed into the receiving pit from the working pit through the soil layer and is lifted. The pipeline is buried between the two pits after following the tool pipe or the heading machine.
In view of the above related technologies, the inventor thinks that there is a defect that when a jacking pipe is hoisted and placed on a guide rail, the jacking pipe will collide with the guide rail, and multiple times of vibration will cause the guide rail to have deviation, thereby reducing the construction quality.
Disclosure of Invention
In order to reduce the striking between push pipe and the guide rail, this application provides an undercut push pipe fixed baseplate.
The application provides a pair of secretly dig push pipe fixed baseplate adopts following technical scheme:
the utility model provides an undercut push pipe fixed baseplate, is including the fixed guided way that sets up, the guided way is provided with two along its width direction interval, set firmly a plurality of fixed cross rails that set up along its length direction interval on the guided way, two be equipped with the bolster between the guided way, bolster one end is fixed, and the other end can contradict with the push pipe lateral surface of placing on the guided way and compress tightly, the bolster can save the energy when the high ability along vertical direction produces deformation and bolster highly reduces, the bolster is provided with three on no longer same straight line at least.
By adopting the technical scheme, when the jacking pipe falls, the jacking pipe contacts with the buffer part firstly, the jacking pipe continues to fall to abut against the buffer part, so that the buffer part deforms, the kinetic energy of the jacking pipe is absorbed in the deformation process of the buffer part until the jacking pipe contacts with the guide rail, the impact on the guide rail when the jacking pipe contacts with the guide rail can be reduced, and meanwhile, the pressure between the jacking pipe and the guide rail is reduced, so that the jacking pipe can move along the length direction of the guide rail conveniently; the arrangement of the plurality of buffering parts can reduce the deflection generated by the acting force applied by the buffering parts to the jacking pipe, and the jacking pipe can fall into the accurate position of the guide rail.
Preferably, the buffer piece is a compression spring, one end of the compression spring is fixed on the ground, and the other end of the compression spring is abutted against and pressed against the outer side surface of the top pipe on the guide rail.
By adopting the technical scheme, when the jacking pipe falls, the side face of the jacking pipe firstly abuts against the upper end face of the compression spring, the jacking pipe compresses the compression spring, and the compression spring exerts a reaction force on the jacking pipe, so that the impact on the guide rail when the jacking pipe contacts with the guide rail is reduced.
Preferably, a height adjusting block is fixed between the buffer member and the ground.
By adopting the technical scheme, the positions of the buffering parts can be adjusted by replacing the height-adjusting blocks with different quantities, and the acting distance of the buffering parts is changed, so that the buffering parts can absorb different impact energy to the jacking pipe when the jacking pipe is in contact with the guide rail.
Preferably, the buffer part comprises a fixed shaft fixed on the ground, one end of the fixed shaft, which is back to the ground, is sleeved with a sliding tube, and one end of the sliding tube, which is back to the fixed shaft, is abutted against a top tube on the guide rail; the buffer piece comprises a buffer spring sleeved on the outer side of the fixed shaft, and one end of the buffer spring is abutted against the end face, connected with the fixed shaft, of the sliding tube.
By adopting the technical scheme, when the jacking pipe collides with the sliding pipe, the sliding pipe is limited by the fixed shaft to move along the axis direction of the sliding pipe, and the sliding pipe further compresses the buffer spring when moving, so that the impact energy is absorbed, and the jacking pipe is buffered.
Preferably, the sliding tube is in sliding seal with the fixed shaft, one end of the sliding tube, which is back to the fixed shaft, is a closed end, and one end of the sliding tube, which is back to the fixed shaft, is provided with a ventilation micropore.
Through adopting above-mentioned technical scheme, when the slip pipe moves down, the air in the slip pipe flows from ventilative micropore, and when the pipe struck to the slip pipe, the slip pipe moves fast, and increase slip pipe inner chamber pressure makes the air in the slip pipe flow out from ventilative micropore fast to absorb the impact energy, further improve buffering effect.
Preferably, the bolster is provided with two sets along guided way width direction interval, every group the bolster includes two bolsters that set up along guided way length direction interval.
By adopting the technical scheme, the four buffer parts are symmetrically arranged, so that when the buffer parts are contacted with the guide pipe, the acting force applied to the guide pipe by the buffer parts is close to the centers of the two guide rails in the length direction, and the push pipe can be accurately placed conveniently.
Preferably, the buffer member comprises a supporting arc plate, the diameter of the inner side surface of the supporting arc plate is equal to the outer diameter of the top pipe placed on the guide rail, and the axis of the inner side surface of the supporting arc plate coincides with the axis of the top pipe placed on the guide rail.
By adopting the technical scheme, the supporting arc plate can improve the contact area between the buffer member and the jacking pipe, the acting force of the buffer member on the jacking pipe is relatively stable, and meanwhile, the abrasion of the buffer member on the outer side surface of the jacking pipe is reduced.
Preferably, a lubricating layer is fixedly arranged on the inner side surface of the supporting arc plate.
By adopting the technical scheme, the lubricating layer can reduce the friction resistance between the top pipe and the supporting arc plate when the top pipe moves along the surface of the supporting arc plate, and reduce the relative abrasion between the supporting arc plate and the surface of the top pipe.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the push pipe falls, the push pipe contacts with the buffer part firstly, the push pipe continues to fall to abut against the buffer part, so that the buffer part is deformed, the kinetic energy of the push pipe is absorbed in the deformation process of the buffer part until the push pipe contacts with the guide rail, the impact on the guide rail when the push pipe contacts with the guide rail can be reduced, and meanwhile, the pressure between the push pipe and the guide rail is reduced, so that the push pipe can move along the length direction of the guide rail conveniently; the arrangement of the plurality of buffering parts can reduce the deflection generated by the acting force applied by the buffering parts to the jacking pipe, and is beneficial to the jacking pipe falling into the accurate position of the guide rail;
2. when the sliding pipe moves downwards, air in the sliding pipe flows out of the air-permeable micropores, and when the guide pipe impacts the sliding pipe, the sliding pipe moves quickly to increase the pressure in the inner cavity of the sliding pipe, so that the air in the sliding pipe flows out of the air-permeable micropores quickly, impact energy is absorbed, and the buffering effect is further improved;
3. the supporting arc plate can improve the contact area between the buffer part and the top pipe, the acting force of the buffer part on the top pipe is relatively stable, and meanwhile, the abrasion of the buffer part on the outer side surface of the top pipe is reduced.
Drawings
FIG. 1 is a schematic view showing an overall structure of a first embodiment in use;
FIG. 2 is a schematic structural diagram of a buffer according to a first embodiment;
FIG. 3 is a schematic cross-sectional view of the second embodiment;
fig. 4 is an enlarged view of a in fig. 3.
Description of reference numerals: 1. a guide rail; 11. fixing the transverse rail; 2. a buffer member; 21. a compression spring; 22. a height adjusting block; 23. a fixed shaft; 24. a sliding tube; 241. air-permeable micropores; 25. a buffer spring; 26. a support arc plate; 3. and (7) jacking the pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses undercut push pipe fixed baseplate.
Example 1
Referring to fig. 1, an undercut push pipe fixed baseplate, including fixed guided way 1 that sets up, guided way 1 is provided with two along its width direction interval, and 3 moving direction of push pipe are followed to the length direction of guided way 1, set firmly a plurality of fixed cross rails 11 that set up along its length direction interval on the guided way 1, and fixed cross rail 11 is located guided way 1 below and passes through built-in fitting fixed connection with ground.
Referring to fig. 2, a buffer member 2 is disposed between the two guide rails 1, and at least three buffer members 2 are disposed on the same line. In this embodiment, the bolster 2 is provided with two sets along 1 width direction interval of guided way, and every group bolster 2 includes two bolsters 2 that set up along 1 length direction interval of guided way, and the distance between two bolsters 2 of every group is less than the length of push pipe 3 along its axis direction, and the symmetry axis of two sets of bolsters 2 coincides with the symmetry axis of two guided ways 1. The symmetrical arrangement of the four buffering parts 2 can ensure that the acting force applied by the buffering parts 2 to the guide pipe is close to the centers of the two guide rails 1 in the length direction when the buffering parts 2 are contacted with the guide pipe, so that the accurate placement of the jacking pipe 3 is facilitated. In another embodiment, each set of buffers 2 comprises three buffers 2 spaced apart along the length of the guide rail 1. In another embodiment, only three buffering members 2 are provided, the three buffering members 2 are located at four end points of the isosceles triangle, and the height of the isosceles triangle where the three buffering members 2 are located is along the axial direction of the top tube 3.
Referring to fig. 2, one end of the buffer member 2 is fixed, the other end of the buffer member can be abutted against and compressed against the outer side surface of the top pipe 3 placed on the guide rail 1, and energy can be accumulated when the height of the buffer member 2 in the vertical direction can be deformed and the overall height of the buffer member 2 is reduced. In the present embodiment, the buffer 2 is a compression spring 21.
A plurality of height-adjusting blocks 22 stably connected with the ground are placed at the lower end of the compression spring 21, the height-adjusting blocks 22 are fixed to the ground through bolts, the number of the height-adjusting blocks 22 is adjusted, the distance between the lower end of the compression spring 21 and the ground is adjusted, and the height-adjusting blocks 22 located on the top are fixedly connected with the lower end of the compression spring 21.
The buffer member 2 comprises a supporting arc plate 26, the supporting arc plate 26 is fixedly provided with the upper end of a compression spring 21, the diameter of the inner side surface of the supporting arc plate 26 is equal to the outer diameter of a top pipe 3 placed on the guide rail 1, the axis of the inner side surface of the supporting arc plate 26 coincides with the axis of the top pipe 3 placed on the guide rail, and a connecting block fixedly connected with the compression spring 21 is integrally formed on the outer side surface of the supporting arc plate 26.
In another embodiment, the inner side surface of the supporting arc plate 26 is fixedly provided with a lubricating layer, and the lubricating layer is a copper layer. The lubricating layer can reduce the friction resistance between the top pipe 3 and the supporting arc plates 26 when the top pipe moves along the surfaces of the supporting arc plates 26, and reduce the relative abrasion between the supporting arc plates 26 and the surfaces of the top pipe 3.
The implementation principle of the embodiment 1 is as follows:
when the top pipe 3 falls, the top pipe 3 contacts with the buffer part 2 first, the top pipe 3 continuously falls to abut against the buffer part 2, so that the buffer part 2 deforms, the kinetic energy of the top pipe 3 is absorbed in the deformation process of the buffer part 2 until the top pipe 3 contacts with the guide rail 1, the impact on the guide rail 1 when the top pipe 3 contacts with the guide rail 1 can be reduced, meanwhile, the pressure between the top pipe 3 and the guide rail 1 is reduced, and the top pipe 3 can conveniently move along the length direction of the guide rail 1; the arrangement of the plurality of buffering members 2 can reduce the deflection generated by the acting force applied by the buffering members 2 to the top pipe 3, and is favorable for the top pipe 3 to fall into the accurate position of the guide rail 1.
Example 2
Referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that the buffer member 2 includes a fixed shaft 23 fixed to the ground, the axis of the fixed shaft 23 is in a vertical direction, and a support plate connected to the ground by a bolt is fixed to a lower end of the fixed shaft 23. One end of the fixed shaft 23, which faces away from the ground, is sleeved with a sliding tube 24, one end of the sliding tube 24, which faces away from the fixed shaft 23, is fixedly connected with a supporting arc plate 26, and the outer side surface of the top tube 3 on the guide rail of the supporting arc plate 26 is pressed against the outer side surface. The buffer member 2 includes a buffer spring 25 sleeved outside the fixed shaft 23, one end of the buffer spring 25 abuts against the end surface of the sliding tube 24 connected to the fixed shaft 23, and the other end abuts against the surface of the supporting plate, so that when the sliding tube 24 moves downward, the buffer spring 25 is further compressed.
Preferably, the sliding tube 24 and the fixed shaft 23 are in sliding seal, a sealing ring groove located on the inner side of the sliding tube 24 is formed on the fixed shaft 23, and a dynamic sealing ring located in the sealing ring groove is sleeved on the fixed shaft 23. The end of the sliding tube 24 facing away from the fixed shaft 23 is a closed end, and the end of the side of the sliding tube 24 facing away from the fixed shaft 23 is provided with air permeable micropores 241, and the diameter of the air permeable micropores 241 in this embodiment is 0.2 mm.
The implementation principle of the embodiment 2 is as follows:
when the top pipe 3 collides with the sliding pipe 24, the sliding pipe 24 is restricted by the fixing shaft 23 to move along the axis direction, when the sliding pipe 24 moves, the buffer spring 25 is further compressed, the sliding pipe 24 moves rapidly, the pressure in the inner cavity of the sliding pipe 24 is increased, and air in the sliding pipe 24 flows out from the ventilation micropores 241 rapidly, so that the collision energy is absorbed, and the top pipe 3 is buffered.
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: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an undercut push pipe fixed baseplate, is including fixed guided way (1) that sets up, guided way (1) are provided with two along its width direction interval, set firmly a plurality of fixed cross rails (11) that set up along its length direction interval on guided way (1), its characterized in that: two be equipped with bolster (2) between guided way (1), bolster (2) one end is fixed, and the other end can be contradicted with push pipe (3) lateral surface of placing on guided way (1) and compress tightly, can save the energy when bolster (2) highly can produce deformation and bolster (2) highly reduce along vertical direction, bolster (2) are provided with three on no longer the same straight line at least.
2. The underground excavation jacking pipe fixing base of claim 1, wherein: the buffer piece (2) is a compression spring (21), one end of the compression spring (21) is fixed on the ground, and the other end of the compression spring is abutted against and pressed against the outer side surface of the top pipe (3) on the guide rail (1).
3. The underground excavation jacking pipe fixing base of claim 2, wherein: and a height adjusting block (22) is fixed between the buffer member (2) and the ground.
4. The underground excavation jacking pipe fixing base of claim 1, wherein: the buffer part (2) comprises a fixed shaft (23) fixed on the ground, one end, back to the ground, of the fixed shaft (23) is sleeved with a sliding pipe (24), and one end, back to the fixed shaft (23), of the sliding pipe (24) is abutted against a top pipe (3) on the guide rail; the buffer piece (2) comprises a buffer spring (25) sleeved on the outer side of the fixed shaft (23), and one end of the buffer spring (25) is abutted against the end face, connected with the fixed shaft (23), of the sliding tube (24).
5. The underground excavation jacking pipe fixing base of claim 4, wherein: the sliding pipe (24) is in sliding seal with the fixed shaft (23), one end of the sliding pipe (24) back to the fixed shaft (23) is a closed end, and one end of the sliding pipe (24) back to the fixed shaft (23) is provided with a ventilation micropore (241).
6. The undercut push-pipe fixing base of claim 1, characterized in that: bolster (2) are provided with two sets of, every group along guided way (1) width direction interval bolster (2) include two bolster (2) that set up along guided way (1) length direction interval.
7. The underground excavation jacking pipe fixing base of claim 1, wherein: the buffer member (2) comprises a supporting arc plate (26), the diameter of the inner side surface of the supporting arc plate (26) is equal to the outer diameter of the top pipe (3) placed on the guide rail (1), and the axis of the inner side surface of the supporting arc plate (26) coincides with the axis of the top pipe (3) placed on the guide rail.
8. The undercut push-pipe fixing base of claim 7, wherein: and a lubricating layer is fixedly arranged on the inner side surface of the supporting arc plate (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572817.1U CN218439404U (en) | 2021-03-19 | 2021-03-19 | Underground-excavated jacking pipe fixing base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120572817.1U CN218439404U (en) | 2021-03-19 | 2021-03-19 | Underground-excavated jacking pipe fixing base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218439404U true CN218439404U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120572817.1U Active CN218439404U (en) | 2021-03-19 | 2021-03-19 | Underground-excavated jacking pipe fixing base |
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| Country | Link |
|---|---|
| CN (1) | CN218439404U (en) |
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2021
- 2021-03-19 CN CN202120572817.1U patent/CN218439404U/en active Active
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