CN116950154A - Safety protection construction system based on shield underpass overhead bridge - Google Patents
Safety protection construction system based on shield underpass overhead bridge Download PDFInfo
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- CN116950154A CN116950154A CN202311059554.4A CN202311059554A CN116950154A CN 116950154 A CN116950154 A CN 116950154A CN 202311059554 A CN202311059554 A CN 202311059554A CN 116950154 A CN116950154 A CN 116950154A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 184
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000003860 storage Methods 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 12
- 230000005641 tunneling Effects 0.000 claims 9
- 238000007569 slipcasting Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 22
- 238000009412 basement excavation Methods 0.000 description 17
- 239000002689 soil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000011160 research Methods 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000008846 dynamic interplay Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000012108 two-stage analysis Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
The application discloses a safety protection construction system based on a shield underpass overhead bridge, which comprises a slurry storage tank and a slurry pump body, wherein the slurry storage tank and the slurry pump body are fixedly arranged with each other, a crankshaft is rotationally arranged in the slurry pump body, the middle part of the crankshaft is rotationally connected with a transmission part, the other end of the transmission part is rotationally connected with a sliding circular plate which is slidingly arranged in the slurry pump body, the sliding circular plate is connected with an auxiliary circular rod, the auxiliary circular rod is provided with a piston part, the piston part is slidingly arranged in a slurry conveying cavity in the slurry pump body, the slurry pump body is connected with the slurry storage tank through a feeding pipe, the slurry in the slurry storage tank is conveyed to a slurry injecting position by the slurry pump body, and a rotating speed adjusting unit is arranged in the slurry pump body and is used for adjusting the rotating speed of the crankshaft so as to realize the slurry conveying efficiency of the slurry pump body and further adapt the slurry conveying time and speed.
Description
Technical Field
The application relates to the technical field of municipal construction, in particular to a safety protection construction system based on a shield underpass overhead bridge.
Background
As the underground space development key point, the underground rail transit is rapidly developed, and large-scale underground transit networks are actively constructed in all large cities, as many ground buildings (structures) in the cities exist, and a plurality of existing bridges in the cities are constructed and put into operation, the excavation and construction of newly-built subway shield tunnels inevitably have a certain influence on the existing bridges in the cities, mainly because of peripheral soil disturbance caused in the construction process, and further the soil body and bridge pile foundations are relatively displaced, and the bridge upper structure is relatively inclined, offset and even cracked due to the differential settlement generated by the bridge pile foundations, so that the bearing capacity of the bridge structure is weakened, and the service life and the safe operation of the bridge structure are seriously influenced.
The influence of tunnel excavation on the existing bridge pile foundation is a complex three-dimensional space problem, the essence of the tunnel excavation is the dynamic interaction between the tunnel, the soil body and the pile foundation, and the existing research at present mainly researches the stratum deformation mechanism, the pile-soil interaction relationship and the pile foundation internal force and the deformation change rule from three aspects of experimental research, theoretical analysis and numerical analysis.
One aspect of theoretical analysis is that for successful application of the two-stage method, students at home and abroad apply the method to theoretical calculation of single pile, pile group without bearing platform and pile group with bearing platform successively, and the method derives deformation and stress mechanism of the pile foundation from the perspective of deep theoretical analysis, so that the cognition level of people on the pile foundation is greatly promoted. Meanwhile, with the gradual deep understanding of pile-soil interaction relationship, more and more researches are carried out on pile foundation stress and deformation theory, such as Su Jie of Beijing traffic university, so as to deduce a theoretical formula between pile foundation settlement and bearing capacity loss. At present, the researches are in the rising and transition stages from engineering practice experience analysis to refined essential law research, and have great development prospects.
For deformation and internal force of adjacent pile groups under tunnel excavation conditions, such as Huang Maosong, a two-stage method is adopted to perform deep theoretical analysis: the first stage adopts analytical solutions proposed by Loganathan and the like to calculate a soil body free displacement field caused by tunnel excavation; the second stage is based on a Winkle foundation model to apply the free displacement of the soil body to the pile to analyze the mechanical reaction of the pile foundation, and meanwhile, the influence of tunnel excavation on pile group is analyzed by considering the barrier effect of the pile foundation; finally, the simplified analysis method is compared and verified by adopting a three-dimensional integral numerical analysis method, and the barrier effect of the passive pile group under the tunnel excavation condition is analyzed on the basis, and the analysis shows that: (1) the pile group shielding effect is reduced along with the increase of the pile spacing; (2) the barrier effect has less effect on the front row piles than on the rear row piles, in particular the axial force; (3) the barrier effect has a much smaller effect on displacement than on internal forces, with a negligible effect on horizontal displacement. The research of the force and deformation mechanism of the pile group by the chapter and the marrong provides an improved two-stage analysis method, which not only can more reasonably consider the nonlinear characteristics of the pile soil action, but also can consider the longitudinal and transverse coupling effect of pile body deformation and the restraint effect of a bearing platform under the action of a plurality of pile foundations, and finally compiles a calculation program.
Wei Xinjiang and the like apply the theory of 'source assembly method', and deduce a three-dimensional additional stress calculation formula generated by soil loss of the double-circle shield tunnel. The distribution rule of total additional load caused by the additional thrust force on the front face of the double-circle shield machine, the friction force between the shield shell and the soil body loss on the adjacent pile foundation is researched. The research results show that: the underground pile foundation in front of the double-circle shield excavation face is subjected to extrusion force, negative additional load behind the excavation face is gradually increased to generate tension, and meanwhile, larger tensile stress and compressive stress are generated at the pile foundation position near the axial depth of the double-circle shield machine; the additional load in the vertical direction is small, the direction of the additional load applied to the pile foundation near the tunnel axis is opposite to the two ends, and the curves are distributed in an arch shape. And by comparing and analyzing with the numerical simulation, the centrifugal test and the field actual measurement result, the influence of the application of analytic solution to research the excavation of the double-circle post-construction tunnel on the adjacent pile foundations is verified to be reliable.
Numerical simulation is a research method which is gradually developed along with the rapid development of computer technology, can consider the problems of complex hydrogeologic conditions, boundary contact, dynamic response, spiral deformation and the like, can also consider multi-field coupling, simulate the influence of different construction methods and construction processes, has a very wide application range, and particularly promotes the application of numerical simulation in engineering practice greatly.
The influence rule of shield Tunnel excavation in soft soil areas on adjacent pile foundations is researched by adopting three-dimensional finite element software Plaxis 3D Tunnel, such as Zhu Feng, and the following conclusion is obtained by comparing the influence rule with the test result of a centrifugal machine: the front row piles in the pile group are deformed and the internal force is larger than that of the rear row piles due to excavation, and the horizontal displacement, the bending moment and the axial force of the front row piles are almost coincident with those of the rear row piles along the shawl distribution; compared with single piles at the same position, each pile in the pile group has a slightly larger horizontal displacement, and the sedimentation is smaller; the maximum bending moment of the front row piles is slightly different from that of the single piles at the same position, the maximum bending moment of the rear row piles is slightly larger than that of the single piles at the same position, and the maximum axial force of the front row piles and the maximum axial force of the rear row piles are both larger than that of the single piles at the same position.
Wang Lihe Zheng Gang the influence of shield excavation on pile settlement, deformation and pile side friction resistance is researched by using a finite element analysis method, and the following rules are obtained: (1) when the distance between the pile and the center of the tunnel is the same, pile top settlement of foundation piles in the pile group caused by tunnel excavation is larger than that of single pile tops due to the influence of additional stress superposition (pile group effect) in soil between the piles; (2) tunnel excavation causes the vertical load of pile groups to be redistributed among foundation piles, and in general, the vertical load of pile tops of middle piles is increased, and the vertical load of pile tops of side piles is reduced; (3) the pile top settlement of each foundation pile in the pile group caused by tunnel excavation mainly depends on three factors, namely the distance between the foundation pile and the center of the tunnel, the influence of pile group effect and the redistribution of pile top load of the foundation pile; (4) the horizontal displacement of the pile group foundation piles mainly depends on the distance between the foundation piles and the center of the tunnel, and meanwhile, other piles in the pile group can increase or decrease the lateral displacement of the foundation piles due to the connection effect of the bearing platform; (5) pile side friction resistance in the tunnel excavation process is mainly affected by the following factors, namely, additional stress superposition in soil among piles, protection of pile side friction resistance of front row piles on middle piles and rear row piles, redistribution of pile top load and pile body deformation.
A plurality of researches show that the bridge pile is reinforced in advance according to the calculation result of numerical simulation by calculating and analyzing the stress change and displacement deformation possibly generated in the construction process, and the settlement of the bridge pile and the soil body can be controlled by a method of adjusting shield construction parameters, so that the construction is ensured to be carried out safely and reasonably; by applying construction control measures such as adjusting parameters of soil bin pressure, grouting materials, segment jack pressure and the like, vertical settlement deformation caused by shield construction to bridge piles can be effectively reduced.
In the prior art, grouting casting is mostly adopted to carry out reinforcement treatment when reinforcing the bridge pile in advance, the conveying speed of the existing slurry pump to concrete is determined by the rotating speed of a motor (namely, the motor) of the slurry pump, however, as described above, the casting time of the shield under-penetrating overhead bridge during safety protection construction is uncertain and the required speed can be flexibly adjusted to realize that required slurry is conveyed in a specific time, so that the motor rotating speed of the slurry pump is adjusted to not meet the conveying of the slurry, and the conveying and casting effects of the slurry are affected.
Disclosure of Invention
The application aims to provide a safety protection construction system based on a shield underpass overhead bridge, which aims to solve the problems in the prior art.
In order to achieve the above object, the present application provides the following technical solutions: the utility model provides a safety protection construction system based on shield wears overhead bridge under, includes stores up thick liquid jar and slush pump body, the mutual fixed setting between store up thick liquid jar and the slush pump body, the internal rotation of slush pump is provided with the bent axle, and the middle part of bent axle rotates and is connected with the driving medium, and the other end of driving medium rotates and is connected with the slip round plate that slides and set up in the slush pump body, is connected with supplementary round bar on the slip round plate, is provided with the piston spare on the supplementary round bar, and the slip of piston spare sets up the defeated thick liquid intracavity in the slush pump body, be connected through the pan feeding between slush pump body and the store up thick liquid jar, the slush pump body is with the thick liquid transport to the slip position in the store up thick liquid jar, be provided with the rotational speed adjustment unit in the slush pump body, the rotational speed adjustment unit includes first round platform spare and second round platform spare, the one end of bent axle is connected with first round platform spare, rotates on the slush pump body outer wall and is connected with the second round platform spare that accepts power unit drive, realizes the transmission through the transmission round roller between second round platform spare and the first round platform spare, the transmission round roller is moved in order to realize with the axial displacement in order to realize with the first round platform ratio between the first round platform.
Above-mentioned, the end connection of slush pump body has the transition shell, be provided with two pay-off passageway that are parallel with the defeated thick liquid chamber in the transition shell, and one of them pay-off passageway is linked together with the tip of defeated thick liquid chamber, and another pay-off passageway is used for the output of thick liquid, and two the one end that the pay-off passageway is close to the defeated thick liquid chamber is linked together through the transmission channel, just is provided with first closing plate in the transmission channel who is connected with defeated thick liquid chamber and keep away from the one end of defeated thick liquid chamber, first closing plate is used for shutoff pan feeding pipe, is connected through first elastic component between the top of first closing plate and pay-off passageway, the one end that the pay-off passageway that is close to the transmission channel for thick liquid output is provided with the second closing plate, the second closing plate is used for shutoff transmission channel, is connected through the second elastic component between second closing plate and the top of pay-off passageway.
The end part of the slurry conveying cavity connected with the feeding channel is conical.
The first round table piece and the second round table piece are arranged in a staggered mode.
Above-mentioned, rotational speed adjusting unit still includes carrier plate and motor, the top of pulp storage jar is provided with the carrier plate, is provided with the pivoted motor of drive second round platform spare on the carrier plate.
Above-mentioned, the bottom part that is located the motor on the bearing board is provided with straight reciprocating motion mechanism, and straight reciprocating motion mechanism's output is provided with the U template, and the U template is located the part between the inclined plane of second round platform piece and first round platform piece, and the bottom of U template is provided with the transmission circle roller through the locating shaft rotation.
Above-mentioned, the internal rotation of pulp storage jar is provided with the (mixing) shaft, and the (mixing) shaft is located the part of pulp storage jar and is provided with the stirring leaf.
Above-mentioned, the one end of (mixing) shaft is provided with first gear, the other end of bent axle is provided with the second gear, and is connected through drive chain between first gear and the second gear.
The end part of the feeding channel is connected with the discharging pipe.
Above-mentioned, the bottom of discharging pipe is connected with the back flow, and back flow and storage thick liquid jar are linked together, and the hookup location that is located the back flow in the discharging pipe is provided with the tee bend ball valve.
The application has the beneficial effects that: when the slurry pump carries out slurry conveying operation, when the rotating speed of the slurry pump is required to be regulated, the driving round roller is driven to move along the inclined plane track of the second round table part and the first round table part, the driving round roller is driven to drive the driving round roller to rotate, the driving round roller drives the first round table part to rotate, and in the moving stroke of the driving round roller, the rotating speed of the driving round roller transmits the rotating speed of the second round table part to the first round table part, so that the first round table part drives the crankshaft to rotate, the regulation of the rotating speed of the crankshaft is realized, and the time and the speed of the slurry conveying of the crankshaft rotating speed adaptation are realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic perspective view of a first view of the present application;
FIG. 2 is a top view of FIG. 1 in accordance with the present application;
FIG. 3 is a front view of FIG. 1 of the present application;
FIG. 4 is a schematic perspective view of a second view of the present application;
FIG. 5 is a schematic view of the cross-sectional structure of FIG. 2 at A-A in accordance with the present application;
FIG. 6 is a schematic view showing a cross-sectional structure at B-B of FIG. 3 according to the present application;
FIG. 7 is a schematic view showing a cross-sectional structure at C-C of FIG. 3 according to the present application;
FIG. 8 is a schematic view of a partial perspective structure of a rotation speed adjusting unit according to the present application;
FIG. 9 is a schematic view of a partial perspective view of a tapping pipe according to the present application.
Reference numerals illustrate:
1. a mud pump body; 2. a slurry storage tank; 3. a crankshaft; 4. a transmission member; 5. sliding the circular plate; 6. an auxiliary round rod; 7. a piston member; 8. a slurry conveying cavity; 9. a feeding pipe; 10. a first round table piece; 11. the second round table piece; 12. driving a round roller; 13. a transition shell; 14. a feed channel; 15. a transmission channel; 16. a first sealing plate; 17. a first elastic member; 18. a second sealing plate; 19. a second elastic member; 20. a bearing plate; 21. a motor; 22. a linear reciprocating mechanism; 23. a U-shaped plate; 24. a stirring shaft; 25. stirring the leaves; 26. a first gear; 27. a second gear; 28. a drive chain; 29. a discharge pipe; 30. a return pipe; 31. three-way ball valve; 32. an auxiliary lever; 33. a driven round bar; 34. an active ring; 35. an active slot; 351. a first straight groove; 352. a second straight groove; 353. a spiral chute; 36. sliding the round rod; 37. and (3) a flat plate.
Detailed Description
In order to make the technical scheme of the present application better understood by those skilled in the art, the present application will be further described in detail with reference to the accompanying drawings.
In the drawings of the present application, the proportions of the main components are adjusted for the convenience of observation, and particularly, the size of the slurry storage tank 2 is greatly reduced, so that the illustrated proportions among the components do not represent actual proportions, but the actual proportions are known to those skilled in the art for the structures of a slurry pump, a slurry storage tank, a feeding pipe for conveying slurry, and the like.
As shown in fig. 1 to 9, the safety protection construction system based on a shield lower penetrating overhead bridge provided by the embodiment of the application comprises a slurry storage tank 2 and a slurry pump body 1, wherein a crankshaft 3 is rotationally arranged in the slurry pump body 1, a transmission part 4 is rotationally connected in the middle of the crankshaft 3, the other end of the transmission part 4 is rotationally connected with a sliding circular plate 5 which is slidingly arranged in the slurry pump body 1, an auxiliary round rod 6 is connected to the sliding circular plate 5, a piston part 7 is arranged on the auxiliary round rod 6, the piston part 7 is slidingly arranged in a slurry conveying cavity 8 in the slurry pump body 1, the slurry in the slurry storage tank 2 is conveyed to a slurry injecting position by the slurry pump body 1 through the slurry conveying cavity 8, a rotating speed adjusting unit is arranged in the slurry pump body 1 and comprises a first round table 10 and a second round table 11, one end of the crankshaft 3 is rotationally connected with the first round table 10, the outer wall of the slurry pump body 1 is rotationally connected with a second round table 11 which is driven by a power receiving unit, and the second round table 11 is axially driven by the round table 11 and the round table 10 to move by the transmission roller through the second round table 10 and the round table 11, and the transmission roller is driven by the second round table 11 to realize the axial movement of the transmission roller to realize the transmission between the round table and the round table 11
Specifically, the slurry storage tank 2 is a tank body for storing concrete slurry, the slurry pump body 1 is a pump body for conveying the slurry stored in the slurry storage tank 2 (namely, the concrete slurry) to a slurry injecting position, when the slurry pump carries out slurry conveying operation, the crankshaft 3 is driven to rotate, the crankshaft 3 drives the driving member 4 (a rod member to swing), the driving member 4 drives the sliding circular plate 5 which is limited by a straight line to carry out straight line reciprocating motion in the slurry pump body 1, the sliding circular plate 5 drives the auxiliary circular rod 6 to carry out straight line reciprocating motion, the auxiliary circular rod 6 drives the piston member 7 to carry out straight line reciprocating motion in the slurry conveying cavity 8, when the piston member 7 moves towards one end of the crankshaft 3, the pressure in the slurry conveying cavity 8 is gradually reduced and vacuum is formed, the slurry sucked into the slurry storage tank 2 through the feeding pipe 9 is pushed up to enter the slurry conveying cavity 8 under the action of liquid level pressure until the piston moves to a left dead center in the slurry conveying cavity 8 near one end of the crankshaft 3, and the working process is called as a slurry sucking process of the pump. The crank continues to rotate after the suction process is finished, at this time, the piston starts to move towards the end far away from the crankshaft 3, the slurry in the slurry conveying cavity 8 is extruded, the pressure rises, the suction valve is closed, the discharge valve is propped open, and the slurry enters the discharge pipe until the piston moves to the right dead center of the end far away from the crankshaft 3 in the slurry conveying cavity 8. This working process is called the discharge process of the slurry pump, and the above is the prior art and is not repeated. Along with the continuous running of the crankshaft 3, the slurry pump continuously repeats the suction and discharge processes, the slurry in the slurry storage tank 2 is continuously injected into the slurry injection position, when the conveying speed of the slurry pump needs to be regulated, only the rotating speed of the crankshaft 3 needs to be regulated, so that the rotating speed of the crankshaft 3 is reflected at the linear reciprocating speed of the piston member 7 (that is, the faster the rotating speed of the crankshaft 3 is, the faster the linear reciprocating speed of the piston member 7 is, the greater the suction and discharge speeds of the slurry are from the piston member 7 and the slurry conveying cavity 8, and vice versa), in the prior art, the reinforcing treatment is carried out by adopting a slurry injection pouring mode in advance when the bridge pile is subjected to reinforcing operation, and the conveying speed of the conventional slurry pump to the concrete is determined by the rotating speed of the motor 21 (that is, the motor 21) thereof, and the required speed can be flexibly regulated to realize the required slurry conveying in a specific time, so that the rotating speed regulation of the motor 21 of the pump does not meet the conveying of the slurry, and further the slurry is not influenced, and the slurry conveying and the slurry is conveyed in the specific time, and the rotating speed regulation of the motor 21 is required by the rotating speed of the motor 21, and the slurry conveying speed is driven by the motor 11, and the rotating speed of the slurry conveying roller 11. Meanwhile, the driving round roller 12 can linearly move along the axis of the driving round roller 12, for example, the central shaft (namely the positioning shaft below) of the driving round roller 12 is driven to linearly move, and in the movement stroke of the linear movement of the driving round roller 12, the driving round roller 12 transmits the rotating speed of the second round platform piece 11 to the first round platform piece 10, so that the first round platform drives the crankshaft 3 to rotate, the adjustment of the rotating speed of the crankshaft 3 is realized, the time and the speed of the slurry conveying are adapted to the rotating speed of the crankshaft 3, and the reinforcement of the bridge pile is more stable.
Further, the end of the slurry pump body 1 is connected with a transition shell 13, two feeding channels 14 parallel to the slurry conveying cavity 8 are arranged in the transition shell 13, one feeding channel 14 is communicated with the end of the slurry conveying cavity 8, the other feeding channel 14 is used for outputting slurry, one end of the two feeding channels 14 close to the slurry conveying cavity 8 is communicated with the slurry conveying cavity through a conveying channel 15, one end, far away from the slurry conveying cavity 8, of the conveying channel 15 connected with the slurry conveying cavity 8 is communicated with the material feeding pipe 9 and is provided with a first sealing plate 16, the first sealing plate 16 is used for sealing the material feeding pipe 9, the first sealing plate 16 is connected with the top end of the feeding channel 14 through a first elastic piece 17, one end, close to the conveying channel 15, of the feeding channel 14 for outputting slurry is provided with a second sealing plate 18, the second sealing plate 18 is used for sealing the conveying channel 15, the second sealing plate 18 is connected with the top end of the feeding channel 14 through a second elastic member 19, specifically, when the piston member 7 moves towards one end of the crankshaft 3, the pressure in the slurry conveying cavity 8 is gradually reduced and vacuum is formed, slurry sucked into the slurry storage tank 2 through the feeding pipe 9 is pushed open by the first sealing plate 16 under the action of the liquid level pressure to enter the slurry conveying cavity 8, at this time, the first sealing plate 16 performs extrusion operation on the first elastic member 17 (the first elastic member 17 is an element capable of performing telescopic reset, preferably a spring), under the action of the abutting of the second elastic member 19, the second sealing plate 18 performs sealing operation on the conveying channel 15 until the piston moves to a left dead center close to one end of the crankshaft 3 in the slurry conveying cavity 8, the operation is called the suction process of the slurry pump, that is, the pressure in the slurry conveying cavity 8 is gradually reduced and vacuum is formed, the slurry in the slurry storage tank 2 is sucked into the slurry conveying cavity 8 through the feeding pipe 9 and the feeding channel 14, the slurry is sucked, the slurry continues to rotate after the crank finishes the suction process, at the moment, the piston starts to move towards the end far away from the crankshaft 3, the slurry in the slurry conveying cavity 8 is extruded, the pressure is increased, under the rebound action of the first elastic piece 17, the first sealing plate 16 seals the feeding pipe 9, the second sealing plate 18 and the second elastic piece 19 are propped up, and the slurry is discharged from the transition shell 13 through the slurry conveying cavity 8, the feeding channel 14, the conveying channel 15 and the feeding channel 14 and conveyed to a pouring position until the piston moves to a right dead center at the end far away from the crankshaft 3 in the slurry conveying cavity 8. This operation is called a discharge process of the slurry pump, and as the crankshaft 3 is continuously operated, the slurry pump continuously repeats the suction and discharge processes, and continuously injects the slurry in the slurry storage tank 2 to the grouting position.
Preferably, the end portion of the slurry conveying cavity 8 connected with the feeding channel 14 is conical, specifically, the end portion of the slurry conveying cavity 8 connected with the feeding channel 14 is conical, when the slurry conveying cavity 8 pumps the slurry, the slurry can smoothly enter the slurry conveying cavity 8, when the slurry conveying cavity 8 discharges the slurry, the slurry is discharged through the conical outlet, so that the pressure applied to the slurry during discharge is increased, and the discharge of the slurry can be accelerated.
Further, the first round table part 10 and the second round table part 11 are arranged in a staggered manner, that is, the bottom surface of the first round table part 10 with a larger radius faces the bottom surface of the second round table part 11 with a smaller radius, and specifically, the first round table part 10 and the second round table part 11 need to be arranged in a staggered manner, so that the rotation speed of the first round table part 10 and the rotation speed of the crankshaft 3 can be regulated through the movement of the transmission round roller 12, the time and the speed of the slurry conveying of the rotation speed adaptation of the crankshaft 3 are realized, and the bridge pile is reinforced more stably.
Further, the rotation speed adjusting unit further includes a supporting plate 20 and a motor 21, the supporting plate 20 is fixed on a fixed foundation such as the ground, the supporting plate 20 is provided with the motor 21 for driving the second round table 11 to rotate, such as coaxial and fixedly connected with the supporting plate 20, specifically, when the second round table 11 needs to be driven to rotate, the motor 21 is started to drive the second round table 11 to rotate, the rotation speed of the second round table 11 can be conveyed to the first round table 10 through the movement of the driving round roller 12, so that the change of the rotation speeds of the first round table 10 and the crankshaft 3 is realized, the rotation speed of the motor 21 can also be adjusted, the rotation speed change range of the crankshaft 3 is larger, the rotation speed of the crankshaft 3 is enabled to adapt to the slurry conveying time and speed, and the bridge pile reinforcement is enabled to be more stable.
Further, a linear reciprocating mechanism 22 is disposed at a bottom end portion of the supporting plate 20 located at the motor 21, a U-shaped plate 23 is disposed at an output end of the linear reciprocating mechanism 22, and the U-shaped plate 23 is located at a portion between the inclined planes of the second circular truncated cone 11 and the first circular truncated cone 10, a driving roller 12 is rotatably disposed at a bottom end of the U-shaped plate 23 through a positioning shaft, and specifically, when the driving roller 12 needs to be driven to move along the inclined plane tracks of the second circular truncated cone 11 and the first circular truncated cone 10, the linear reciprocating mechanism 22 is started (the linear reciprocating mechanism 22 is a mechanism capable of performing linear reciprocating motion, such as a hydraulic cylinder, an air cylinder, etc.) so that the U-shaped plate 23 drives the driving roller 12 to move along the inclined plane tracks of the second circular truncated cone 11 and the first circular truncated cone 10, so as to implement adjustment of a rotational speed between the second circular truncated cone 11 and the first circular truncated cone 10.
Further, the stirring shaft 24 is disposed in the inner rotation of the slurry storage tank 2, the stirring blade 25 is disposed in the portion of the stirring shaft 24 located in the slurry storage tank 2, specifically, since the pouring time is uncertain and the required speed can be flexibly adjusted to achieve that the required slurry is conveyed in a specific time, the slurry in the slurry storage tank 2 is always in an active state (that is, the slurry is not agglomerated in the slurry storage tank 2), so that the stirring shaft 24 needs to be driven to drive the stirring blade 25 to stir the slurry in the slurry storage tank 2, and the slurry is prevented from agglomerating in the slurry storage tank 2 to further influence the subsequent use of the slurry.
Further, a driving element (e.g. a driving motor) is disposed outside the slurry tank 2 and connected to the stirring shaft 24, and specifically, when the stirring shaft 24 needs to be driven to rotate, the stirring shaft 24 can be driven to rotate by starting the driving motor, which is common knowledge in the art and is not described in detail.
Preferably, a first gear 26 is disposed at one end of the stirring shaft 24, a second gear 27 is disposed at the other end of the crankshaft 3, and the first gear 26 and the second gear 27 are connected through a transmission chain 28, specifically, when the motor 21 drives the first round table member 10 to rotate through the second round table member 11 and the transmission round roller 12, the first round table member 10 drives the crankshaft 3 to rotate, the crankshaft 3 drives the second gear 27 to rotate, the second gear 27 and the first gear 26 are driven by the transmission chain 28, so that the first gear 26 drives the stirring shaft 24 to rotate, when the transmission round roller 12 moves, the rotation speed of the first round table member 10 can be adjusted, so that the rotation speed of the stirring shaft 24 and the rotation speed of the stirring blade 25 can be adjusted through the movement of the transmission round roller 12, and the stirring speed of the stirring shaft 24 and the stirring blade 25 on the slurry in the slurry storage tank 2 can be adjusted.
Further, the end portion of the feeding channel 14 is connected with a discharging pipe 29, specifically, when the slurry is discharged from the feeding channel 14, the output end of the discharging pipe 29 is made of a soft material, so that the discharging pipe 29 can extend into a pouring position, and the discharging pipe 29 can convey the slurry to the pouring position.
Further, the discharge pipe 29 is further connected with a return pipe 30, the return pipe 30 is communicated with the slurry storage tank 2, a three-way ball valve 31 is arranged in the discharge pipe 29 at a connection position of the return pipe 30, and specifically, the three-way ball valve 31 is used for opening and closing the return pipe 31 and the discharge pipe 29 (that is, when the return pipe 31 is opened, the discharge pipe 29 is closed; when the return pipe 31 is closed, the discharge pipe 29 is opened), which is a common knowledge in the art and is not described in detail, after the pouring of the slurry is completed, the three-way ball valve 31 is rotated to enable the discharge pipe 29 to be in a closed state, the return pipe 30 is in an open state, slurry is conveyed into the slurry storage tank 2 through the discharge pipe 29 and the return pipe 30 by the piston member 7 and the slurry conveying cavity 8, so that cleaning operation is not required in the slurry conveying cavity 8, the reason is that the grouting time is uncertain in the embodiment, the whole circulation system is required to be cleaned after stopping, so that the slurry remained in the interior is prevented from hardening, the grouting time is definite and continuous in the prior art, the slurry can be injected at one time and then cleaned, the embodiment of the application cannot ensure that the whole slurry is continuously circulated through the return pipe 31, the slurry is stopped, but the circulation system is not stopped, the slurry is not agglomerated in the slurry conveying cavity 8, the discharge pipe 29 and the transition shell 13, and the slurry conveying operation is carried out by the piston member 7 and the slurry conveying cavity 8, and the stirring shaft 24 in the slurry storage tank 2 are not continuously stirred, so that the stirring activity is not influenced after the stirring operation is continued, and the stirring operation is continued; when it is desired to deliver the slurry to the pouring location, the three-way ball valve 31 is turned so that the outlet pipe 29 is in an open state and the return pipe 30 is in a closed state, and the slurry is delivered to the pouring location through the outlet pipe 29 via the piston member 7 and the slurry delivery chamber 8.
In another embodiment of the present application, an auxiliary rod 32 is disposed at the top end of the U-shaped plate 23, and the auxiliary rod 32 is capable of telescoping, such as an elastic telescoping rod, a driven round rod 33 is connected to a valve rod of the three-way ball valve 31 for control, a driving circular ring 34 is sleeved outside the driven round rod 33, the driving circular rod is connected to the auxiliary rod 32, a driving groove 35 is disposed on the driving circular ring 34, the driving groove 35 is divided into a first straight groove 351, a second straight groove 352 and a spiral chute 353, the first straight groove 351 and the second straight groove 352 are connected through the spiral chute 353, the first straight groove 351 is close to one end of the discharging pipe 29, the driven round rod 33 is provided with a sliding round rod 36, the sliding round rod 36 is slidably disposed in the first straight groove 351 of the driving groove 35, a flat plate 37 is disposed on the transition shell 13, and the auxiliary rod 32 is slidably disposed between the two flat plates 37, specifically, an angle corresponding to the first straight groove 351 and the second straight groove 352 on the outer wall of the driving circular ring 34 is 90 degrees, that is the first straight groove 351 and the second straight groove 351 can move along the auxiliary round rod 37, the auxiliary round rod 32 can move along the straight track of the straight groove 32, the auxiliary round rod can be limited by the straight groove 32, the sliding round rod can move along the straight groove 37, and the straight groove 32 is only one side of the straight groove 32, and can move along the straight groove 37, and can be limited by the straight groove 32, and the auxiliary round rod 32, and can move along the straight groove 37, and the auxiliary round rod can be the straight groove 32, at this time, the transmission round roller 12 is located at one end of the bottom surface with a larger radius of the first round table part 10 and one end of the bottom surface with a smaller radius of the second round table part 11 (namely, the transmission round roller 12 conveys the rotating speed of the second round table part 11 onto the first round table part 10 with a smaller rotating speed), at this time, the first round table part 10 and the crankshaft 3 are in an idle state, the consumption of electric energy of the motor 21 is reduced, the three-way ball valve 31 enables the material outlet pipe 29 to be in a closed state, the return pipe 30 is in an open state, and the rotation of the crankshaft 3 enables the piston part 7 and the pulp conveying cavity 8 to convey pulp into the pulp storage tank 2 through the material outlet pipe 29 and the return pipe 30, so that cleaning operation is not needed in the pulp conveying cavity 8, the pulp is agglomerated in the pulp conveying cavity 8, the material outlet pipe 29 and the transition shell 13, and the stirring shaft 24 and the stirring blade 25 in the pulp storage tank 2 always stir the pulp at this time while the stirring blade 25 is also in an idle state, so that the pulp is in an active state, and the subsequent agglomeration is not affected; (2) When slurry is required to be conveyed to a pouring position, the discharging pipe 29 is extended to the pouring position, at the moment, the rotating speed of the crankshaft 3 is required to be accelerated, the linear reciprocating mechanism 22 is started to drive the U-shaped plate 23 to move along the inclined plane track of the second round table 11 and the first round table 10 towards one end close to the slurry pump body 1, the U-shaped plate 23 drives the transmission round roller 12 to move, the transmission round roller 12 transmits the rotating speed on the second round table 11 to the first round table 10, as the transmission round roller 12 gradually slides from the bottom surface with smaller radius on the second round table 11 to one end with larger radius (the transmission round roller 12 gradually slides from the bottom surface with larger radius on the first round table 10 to one end with smaller radius), the transmission round roller 12 transmits the rotating speed increase of the second round table 11 to the first round table 10, the rotating speed increase of the first round table 10, the first round table part 10 drives the crankshaft 3 to rotate, the crankshaft 3 transmits the rotating speed to the piston part 7, the linear reciprocating motion speed of the piston part 7 is increased, the slurry conveying operation is accelerated, the linear reciprocating motion mechanism 22 drives the U-shaped plate 23 to move along the inclined plane track of the second round table part 11 and the first round table part 10 towards one end close to the slurry pump body 1, the U-shaped plate 23 drives the auxiliary rod 32 to move towards one end close to the discharging pipe 29, the auxiliary rod 32 slides in the flat plate 37, the auxiliary rod 32 stretches, the auxiliary rod 32 drives the driving circular ring 34 to move towards one end close to the discharging pipe 29 at the driven circular rod 33, the sliding circular rod 36 slides along the track of the driving groove 35, the sliding track of the sliding circular rod 36 is the first straight groove 351-the spiral chute 353-the second straight groove 352, when the sliding round rod 36 slides into the second straight groove 352, the sliding round rod 36 drives the driven round rod 33 to rotate 90 degrees, the driven round rod 33 drives the three-way ball valve 31 to rotate 90 degrees, so that the material outlet pipe 29 is in an open state, the return pipe 30 is in a closed state, and the slurry is conveyed to a pouring position through the material outlet pipe 29 by the piston piece 7 and the slurry conveying cavity 8; (3) When pouring is completed, the rotation speed of the crankshaft 3 needs to be reduced at this time, so as to reduce the energy consumption of the motor 21, the linear reciprocating mechanism 22 is started to drive the U-shaped plate 23 to move along the inclined plane track of the second round table part 11 and the first round table part 10 towards one end far away from the mud pump body 1, the U-shaped plate 23 drives the transmission round roller 12 to move, the transmission round roller 12 transmits the rotation speed of the second round table part 11 onto the first round table part 10, the transmission round roller 12 gradually slides from the bottom surface with larger radius on the second round table part 11 towards one end with smaller radius (the transmission round roller 12 gradually slides from the bottom surface with smaller radius on the first round table part 10 towards one end with larger radius) so that the transmission round roller 12 reduces the rotation speed of the second round table part 11 onto the first round table part 10, the first round table part 10 reduces the rotation speed of the first round table part 10, the crankshaft 3 drives the rotation speed of the crankshaft 7 to be transmitted onto the piston part 7, the linear reciprocating speed of the piston part 7 is reduced, the transmission round roller 12 gradually slides from the bottom surface with larger radius towards one end of the lower radius towards one end of the auxiliary round bar 32 along the first round bar 351, the first round bar (37) of the auxiliary round bar (37) and the auxiliary round bar (32) is driven by the linear reciprocating mechanism 22) to move towards one end of the auxiliary round bar (32) along the first round bar (37) along the inclined plane track of the first round bar (35) and the auxiliary round bar (37) and the auxiliary round bar (32) along the linear guide bar (37) and the linear guide bar) moves away from the end) along the inclined plane track (35) and the first round bar (35) so as to slide from the end of the auxiliary bar (35) and the guide bar (guide bar 32) and the guide bar 32) slide channel (slide channel 32) and the slide channel 32, when the sliding round bar 36 slides into the first straight groove 351, the sliding round bar 36 drives the driven round bar 33 to rotate 90 degrees, and the driven round bar 33 drives the three-way ball valve 31 to rotate 90 degrees, so that the material outlet pipe 29 is in a closed state, and the return pipe 30 is in an open state, so that the piston member 7 and the pulp delivery cavity 8 deliver pulp into the pulp storage tank 2 through the material outlet pipe 29 and the return pipe 30.
While certain exemplary embodiments of the present application have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the application. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the application, which is defined by the appended claims.
Claims (10)
1. The utility model provides a safety protection construction system based on shield wears overhead bridge under, includes stores up thick liquid jar and slush pump body, the internal rotation of slush pump is provided with the bent axle, and the middle part of bent axle rotates to be connected with the driving medium, and the other end of driving medium rotates to be connected with the slip round plate that slides and set up in the slush pump body, is connected with supplementary round rod on the slip round plate, is provided with the piston spare on the supplementary round rod, and the sliding of piston spare sets up in the defeated thick liquid intracavity of slush pump body, be connected through the pan feeding pipe between slush pump body and the store up thick liquid jar, the slush pump body is with the thick liquid transport in the store up thick liquid jar to the slip casting position, a serial communication port, this internal rotation speed adjustment unit that is provided with of slush pump, rotation speed adjustment unit includes first round platform spare and second round platform spare, the one end of bent axle is connected with first round platform spare, rotates on the slush pump body outer wall to be connected with the second round platform spare that accepts the power unit drive, realizes the transmission through the transmission round roller between second round platform spare and the first round platform spare, the transmission round roller is driven in order to realize second round platform and first round platform transmission ratio.
2. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 1, characterized in that, the end part of the slurry pump body is connected with a transition shell, two feeding channels parallel to the slurry conveying cavity are arranged in the transition shell, one feeding channel is communicated with the end part of the slurry conveying cavity, the other feeding channel is used for outputting slurry, one end of the two feeding channels close to the slurry conveying cavity is communicated through the transmission channel, one end of the two feeding channels connected with the slurry conveying cavity, far away from the slurry conveying cavity, is provided with a first sealing plate, the first sealing plate is used for plugging a feeding pipe, the first sealing plate is connected with the top end of the feeding channel through a first elastic piece, one end of the feeding channel for outputting slurry, close to the transmission channel, is provided with a second sealing plate, and the second sealing plate is connected with the top end of the feeding channel through a second elastic piece.
3. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 1, wherein the end part of the slurry conveying cavity connected with the feeding channel is cone-shaped.
4. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 1, wherein the first round table and the second round table are arranged in a staggered manner.
5. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 1, wherein the rotation speed adjusting unit further comprises a bearing plate and a motor, the bearing plate is arranged at the top end of the slurry storage tank, and the motor for driving the second round platform to rotate is arranged on the bearing plate.
6. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 5, wherein the bottom end portion of the supporting plate, which is located at the motor, is provided with a linear reciprocating mechanism, the output end of the linear reciprocating mechanism is provided with a U-shaped plate, the U-shaped plate is located at the portion between the inclined planes of the second round table and the first round table, and the bottom end of the U-shaped plate is rotatably provided with a transmission round roller through a positioning shaft.
7. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 1, wherein a stirring shaft is arranged in the slurry storage tank in a rotating mode, and stirring blades are arranged on the part of the stirring shaft located in the slurry storage tank.
8. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 7, wherein a first gear is arranged at one end of the stirring shaft, a second gear is arranged at the other end of the crankshaft, and the first gear and the second gear are connected through a transmission chain.
9. The safety protection construction system based on the shield tunneling overhead bridge, according to claim 2, wherein the end part of the feeding channel is connected with a discharging pipe.
10. The safety protection construction system based on the shield tunneling overhead bridge, which is disclosed in claim 9, is characterized in that the bottom end of the discharging pipe is connected with a return pipe, the return pipe is communicated with the slurry storage tank, and a three-way ball valve is arranged at the connecting position of the return pipe in the discharging pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311059554.4A CN116950154B (en) | 2023-08-22 | 2023-08-22 | Safety protection construction system based on shield underpass overhead bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311059554.4A CN116950154B (en) | 2023-08-22 | 2023-08-22 | Safety protection construction system based on shield underpass overhead bridge |
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| CN116950154B CN116950154B (en) | 2024-03-22 |
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| GB1297530A (en) * | 1970-07-13 | 1972-11-22 | ||
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| CN110387788A (en) * | 2019-07-15 | 2019-10-29 | 滕小茶 | A kind of cement road, which is laid with, pours concrete device with swing |
| CN210176014U (en) * | 2019-07-04 | 2020-03-24 | 江西天宇化工有限公司 | System for changing material transferring mode |
| CN216587738U (en) * | 2021-06-16 | 2022-05-24 | 湖南特通风机有限公司 | Building fan |
| CN216587860U (en) * | 2021-12-03 | 2022-05-24 | 上海翼翔建筑工程有限公司 | Portable high-pressure grouting machine |
| CN217461506U (en) * | 2021-11-30 | 2022-09-20 | 广东天凛高新科技有限公司 | Cementing material solidifies delay device |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1297530A (en) * | 1970-07-13 | 1972-11-22 | ||
| CN204415154U (en) * | 2015-01-27 | 2015-06-24 | 长城汽车股份有限公司 | A kind of part-time case and apply its vehicle |
| CN210176014U (en) * | 2019-07-04 | 2020-03-24 | 江西天宇化工有限公司 | System for changing material transferring mode |
| CN110387788A (en) * | 2019-07-15 | 2019-10-29 | 滕小茶 | A kind of cement road, which is laid with, pours concrete device with swing |
| CN216587738U (en) * | 2021-06-16 | 2022-05-24 | 湖南特通风机有限公司 | Building fan |
| CN217461506U (en) * | 2021-11-30 | 2022-09-20 | 广东天凛高新科技有限公司 | Cementing material solidifies delay device |
| CN216587860U (en) * | 2021-12-03 | 2022-05-24 | 上海翼翔建筑工程有限公司 | Portable high-pressure grouting machine |
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| CN116950154B (en) | 2024-03-22 |
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