CN102505642B - Control system for integrated synchronous jacking of cut pier and control method - Google Patents

Control system for integrated synchronous jacking of cut pier and control method Download PDF

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CN102505642B
CN102505642B CN201110334974XA CN201110334974A CN102505642B CN 102505642 B CN102505642 B CN 102505642B CN 201110334974X A CN201110334974X A CN 201110334974XA CN 201110334974 A CN201110334974 A CN 201110334974A CN 102505642 B CN102505642 B CN 102505642B
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jacking
spool
oil
valve body
regulation device
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CN102505642A (en
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徐宏
范恒秀
许铁力
唐明
孙兆兴
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China Railway First Engineering Group Co Ltd
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China Railway First Engineering Group Co Ltd
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Abstract

The invention discloses a control system for integrated synchronous jacking of a cut pier and a control method. The control system comprises two hydraulic jacking devices for providing jacking power, two hydraulic circuits connected with the two hydraulic jacking devices respectively, two oil feeding amount adjusting devices and a jacking balancing state monitoring device, wherein the two oil feeding amount adjusting devices are installed on the two hydraulic circuits respectively, and the jacking balancing state monitoring device performs real-time monitoring to a balancing state of a structure needing to be jacked in the jacking process and controls the two oil feeding amount adjusting devices according to monitoring results. The control method comprises the steps of jacking preparation and jacking, upward jacking is performed to the structure through the two hydraulic jacking devices in actual jacking until the structure is jacked to a preset height, and timely dynamic deviation rectification is carried out to the structure. The control system for integrated synchronous jacking of the cut pier and the control method are reasonable in design, high in automation, good in coordinating performance and safety performance and simple and convenient to control, enables the jacking process to be smooth and efficient, and can effectively solve the construction problem that unbalanced elevation discrepancy limitation in the pier cutting integration jacking process cannot be automatically controlled.

Description

A kind of cutting bridge abutment integral synchronous jacking control system and control method
Technical field
The invention belongs to bridge construction jack-up construction technical field, especially relate to a kind of cutting bridge abutment integral synchronous jacking control system and control method.
Background technology
Utilize the multi-section jack to realize that synchronization of jacking up is the larger job practices of a kind of technical difficulty commonly used in bridge construction to structure, during practice of construction, realize the synchronization job of multi-section jack and be the key of construction control by the steady jack-up of climbing structure.At present, synchronization of jacking up construction control is mainly controlled the jacking speed of each jack in conjunction with the method for manual control switch's oil pump by on-the-spot dimensional measurement.This traditional control method to construction geometry measurement have relatively high expectations, measuring operation and switch oil pump needs jack-up construction to occur suspending, and causes construction discontinuous, efficiency of construction is lower; In addition, because measurement and oil pump open operation levels of precision and operating personnel's experience is relevant, have certain subjectivity, precision is difficult to guarantee; And the frequency that is limited to dimensional measurement is limited, can not dynamically grasp at any time and adjust the jacking discrepancy in elevation, find after measuring that the uneven discrepancy in elevation of jacking is often larger, adjust Comparision passive.
Cutting bridge abutment integral jack-up construction method is the higher a kind of job practices of technology content in the Bridge Reconstruction construction, it adopts and cuts in advance bridge pier, then integral jacking puts in place, again the bridge pier after putting in place and former bridge pier are reconnected to concreting and form integral body, to realize raising the purpose of bridge elevation.In the actual jacking process of bridge pier, in order to guarantee the stability of bent cap and top beam body, thereby need the uneven discrepancy in elevation that guarantees the bent cap both lateral sides must not surpass limit value.Traditional synchronization of jacking up control method is mainly by the uneven discrepancy in elevation of tracing property dimensional measurement monitoring bent cap both lateral sides, when the uneven discrepancy in elevation reaches restriction numerical value, manually-operated is closed the upper side oil pump and is made its Suspend Job, and after the uneven discrepancy in elevation reduces or substantially eliminates, reopen and close temporarily oil pump, two jack are worked simultaneously.
Nowadays, in cutting bridge abutment integral jack-up construction process, above-mentioned uneven elevation difference limit control method application is more, but due to dimensional measurement and jacking work cross-operation, thereby make the integral jacking work of cutting bridge pier discontinuous.Simultaneously, because the measurement to the uneven discrepancy in elevation of bent cap both lateral sides in the jacking process is difficult to realize continuous monitoring, thereby the uneven discrepancy in elevation there will be the situation over limit value; And generally need to stop lifting operation during due to dimensional measurement, so jacking speed is slow, larger on the impact of efficiency of construction; In addition, the Artificial Control method that adopts is controlled in the oil pump operation, and there is larger subjectivity in whole operating process, thereby the process control precision is lower.To sum up, in actual application, in existing cutting bridge pier jacking process, there are many practical problems in synchronization of jacking up control method used.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of reasonable in design, automaticity is high, security performance good and the cutting bridge abutment integral synchronous jacking control system workable, that practical value is high.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: comprise for jacking power being provided and needing make progress two hydraulic jacking devices of horizontal jacking of integral jacking bridge construction integral body, two hydraulic circuits that join with two described hydraulic jacking devices respectively, be arranged on respectively the jacking balance state monitoring device that in two oil inlet quantity adjusting devices on two described hydraulic circuits and jacking process, the equilibrium state that needs the integral jacking bridge construction is carried out Real-Time Monitoring and according to monitoring result, two described oil inlet quantity adjusting devices carried out to corresponding control,
Two described hydraulic jacking devices are respectively symmetrical and withstand on the hydraulic jacking device one that needs below, the integral jacking bridge construction left and right sides and two, two described hydraulic circuits of hydraulic jacking device and be respectively to described hydraulic jacking device one is carried out the oil supply loop one of fuel feeding and described hydraulic jacking device two carried out to the oil supply loop two of fuel feeding, two described oil inlet quantity adjusting devices are respectively the control fuel tap one be arranged on oil supply loop one and are arranged on the control fuel tap two on oil supply loop two, and described control fuel tap one is identical with the structure of control fuel tap two, the oil pressure of a pair of oil supply loop one of the described control fuel tap hydraulic oil that provides and oil mass is adjusted and it comprises valve body one and is arranged on the spool one in valve body one, described spool one adjusts accordingly the aperture of control fuel tap one when doing straight reciprocating motion and its straight reciprocating motion valve body one is interior, the oil pressure of two pairs of oil supply loop two hydraulic oil that provide of described control fuel tap and oil mass is adjusted and it comprises valve body two and is arranged on the spool two in valve body two, described spool two adjusts accordingly the aperture of control fuel tap two when doing straight reciprocating motion and its straight reciprocating motion valve body two is interior, described jacking balance state monitoring device comprises two electromagnetic valve aperture regulation devices and is laid in to be needed on the integral jacking bridge construction and the electromagnetic attraction regulation device that two described electromagnetic valve aperture regulation devices are controlled, two described electromagnetic valve aperture regulation devices be respectively with movable valve plug one valve body one interior make the electromagnetic valve aperture regulation device one of straight reciprocating motion and with movable valve plug two at the interior electromagnetic valve aperture regulation device two of doing straight reciprocating motion of valve body two, the power supply circuits phase of described electromagnetic valve aperture regulation device one and electromagnetic valve aperture regulation device two also connects and the two all is connected on power supply, described control fuel tap one acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool one for described electromagnetic valve aperture regulation device one, and described control fuel tap two acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool two for described electromagnetic valve aperture regulation device two, described electromagnetic attraction regulation device is to be horizontally fixed on the slide rheostat needed on the integral jacking bridge construction, the left and right sides symmetrical configuration of described slide rheostat and its slide plate be suspended in need on the integral jacking bridge construction and in the jacking process with the pendulum that needs about integral jacking bridge construction synchronously to be swung to canting, in described slide rheostat, the resistance of the slide plate left and right sides is respectively BC section resistance and AB section resistance, and the resistance value of BC section resistance and AB section resistance is all carried out respective change with swinging of slide plate, need integral jacking bridge construction described pendulum when equilibrium state to be positioned at the slide rheostat middle part, need the resistance of integral jacking bridge construction BC section resistance and AB section resistance when equilibrium state to equate and now the resistance of BC section resistance and AB section resistance be r 0, described AB section resistance is serially connected in the power supply circuits of electromagnetic valve aperture regulation device one, and described BC section resistance is serially connected in the power supply circuits of described electromagnetic valve aperture regulation device two.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system is characterized in that: described hydraulic jacking device one is hydraulic jack one, an end of the oil supply loop one and oil inlet pipe interface of hydraulic jack one joins and its other end is connected to fuel reserve tank after oil pump one; Described hydraulic jacking device two is hydraulic jack two, an end of the oil supply loop two and oil inlet pipe interface of hydraulic jack two joins and its other end is connected to fuel reserve tank after oil pump two.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: described control fuel tap one also comprises that many are vertically to the extension spring one of laying, described spool one top is provided with spring fixed seat one, many described extension springs one evenly are laid in spool one outside, and the upper end of many described extension springs one all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body one bottom or oil supply loop one; Need the integral jacking bridge construction when equilibrium state, the spring force of many described extension springs one is zero;
Described valve body one is for having the valve body of oil spilling mouth one on the equal opening in top and the bottom and bottom sidewall, valve body one sealed bottom is arranged on oil supply loop one and its inside communicates with oil supply loop one inside, spool one from top to bottom plug-in mounting enters in valve body one, the upper opening of valve body one carries out shutoff by spool one, and described spool one vertically moves up and down and it is adjusted open and-shut mode and the aperture of oil spilling mouth one when vertically moving up and down valve body one is interior under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one; Need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one, F12 is that in oil supply loop one, hydraulic oil acts on the pressure of oil pressure straight up on spool one, the self gravitation that G1 is spool one, f1 is the frictional force between spool one and valve body one;
Described control fuel tap two also comprises that many are vertically to the extension spring two of laying, described spool two tops are provided with spring fixed seat two, many described extension springs two evenly are laid in spool two outsides, and the upper end of many described extension springs two all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body two bottoms or oil supply loop two; Need the integral jacking bridge construction when equilibrium state, the spring force of many described extension springs two is zero;
Described valve body two is for having the valve body of oil spilling mouth two on the equal opening in top and the bottom and bottom sidewall, valve body two sealed bottoms are arranged on oil supply loop two and its inside communicates with oil supply loop two inside, spool two from top to bottom plug-in mounting enters in valve body two, the upper opening of valve body two carries out shutoff by spool two, and described spool two vertically moves up and down and it is adjusted open and-shut mode and the aperture of oil spilling mouth two when vertically moving up and down valve body two is interior under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two; Need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two, F22 is that in oil supply loop two, hydraulic oil acts on the pressure of oil pressure straight up on spool two, the self gravitation that G2 is spool two, f2 is the frictional force between spool two and valve body two.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: described electromagnetic valve aperture regulation device one comprises electromagnetic coil one and the permanent magnet one be used in conjunction with electromagnetic coil one, described permanent magnet one be arranged on spool one top and its be positioned at spool one directly over, described electromagnetic coil one be positioned at permanent magnet one directly over and electromagnetic coil one maintain static, described electromagnetic coil one power on after with permanent magnet one between the generation mutual adhesive magnetic attraction; Described electromagnetic valve aperture regulation device two comprises electromagnetic coil two and the permanent magnet two be used in conjunction with electromagnetic coil two, described permanent magnet two be arranged on spool two tops and its be positioned at spool two directly over, described electromagnetic coil two be positioned at permanent magnet two directly over and electromagnetic coil two maintain static, described electromagnetic coil two power on after with permanent magnet two between the generation mutual adhesive magnetic attraction.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: the power supply circuits of described electromagnetic valve aperture regulation device one are the current supply circuit be connected between described power supply and electromagnetic coil one, and electromagnetic coil one is connected in series mutually with described AB section resistance; The power supply circuits of described electromagnetic valve aperture regulation device two are the current supply circuit be connected between described power supply and electromagnetic coil two, and electromagnetic coil two is connected in series mutually with described BC section resistance.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: described valve body one is cylindric valve body, described spool one is to be the cylindric piston of coaxial laying with valve body one, and the equal opening in the top of valve body one is the manhole that bore is identical with spool one external diameter; Described valve body two is cylindric valve body, and described spool two is to be the cylindric piston of coaxial laying with valve body two, and the equal opening in the top of valve body two is the manhole that bore is identical with spool two external diameters.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: described slide rheostat is the circular arc slide rheostat.
Above-mentioned a kind of cutting bridge abutment integral synchronous jacking control system, it is characterized in that: the described integral jacking bridge construction that needs comprises cutting bridge pier superstructure, is positioned at the bent cap on cutting bridge pier superstructure and is laid in the bridge superstructure on bent cap, described bent cap is positioned at directly over cutting bridge pier superstructure and bridge superstructure is positioned at directly over bent cap, and cut bridge pier is divided into upper and lower two parts and upper and lower two parts are respectively cutting bridge pier superstructure and cutting bridge pier substructure; Two symmetrical of described hydraulic jacking devices withstand on the below, the left and right sides of bent cap; Described slide rheostat is laid on the sidewall of bent cap, and the top fixed point O of described pendulum be positioned at cutting bridge pier superstructure directly over.
Simultaneously, the invention also discloses a kind of method step simple, control easy and jacking process steadily efficient, can effectively solve uneven elevation difference limit in bridge pier cutting integral jacking process and be difficult to realize the cutting bridge abutment integral synchronization of jacking up control method of automatically controlling, it is characterized in that the method comprises the following steps:
Step 1, jacking are prepared: by described hydraulic jacking device one and hydraulic jacking device two respectively symmetrical withstand on the below, the left and right sides that needs the integral jacking bridge construction, and described hydraulic jacking device one and hydraulic jacking device two are joined with oil supply loop one and oil supply loop two respectively; Simultaneously, needing on the integral jacking bridge construction that slide rheostat is installed and making described pendulum be positioned at the slide rheostat middle part, now the resistance of BC section resistance and AB section resistance equates and the resistance of the two is r 0; Afterwards, by the spool one of described electromagnetic valve aperture regulation device one and two pairs of control fuel taps one of electromagnetic valve aperture regulation device and the spool two of control fuel tap two, adjusted respectively, the aperture of control fuel tap one and control fuel tap two is adjusted to maximum, and now that oil pressure and the flow of maximum and oil supply loop one and oil supply loop two hydraulic oil that provides all is provided is all identical for the oil pressure of oil supply loop one and oil supply loop two hydraulic oil that provides and flow;
Step 2, jacking: need the jacking that makes progress of integral jacking bridge construction by described hydraulic jacking device one and two pairs of hydraulic jacking devices, until will need the jacking of integral jacking bridge construction to preset height; In the jacking process, slide rheostat with need the integral jacking bridge construction synchronously to move up and the pendulum of slide rheostat with needing the integral jacking bridge construction synchronously to carry out the left and right sides inclination, carry out Real-Time Monitoring with the equilibrium state to needing the integral jacking bridge construction: when needing the integral jacking bridge construction in equilibrium state, the pendulum of slide rheostat is positioned at the slide rheostat middle part, and now needs the integral jacking bridge construction in the synchronization of jacking up state; When needing the integral jacking bridge construction left or receding, the pendulum of slide rheostat synchronously tilts to the left or to the right, and now needs the integral jacking bridge construction in the correction state;
When needing the integral jacking bridge construction in equilibrium state, because the pendulum of slide rheostat is positioned at the slide rheostat middle part, now the resistance of BC section resistance and AB section resistance is r 0, according to the parallel circuit shunting principle, the current value of the power supply circuits of the power supply circuits of described electromagnetic valve aperture regulation device two and described electromagnetic valve aperture regulation device one equates and is I 0, now described electromagnetic valve aperture regulation device two acts on electromagnetic attraction that electromagnetic attraction on spool two and described electromagnetic valve aperture regulation device one act on spool one and equates and be F 0correspondingly the shift position of spool one in valve body one is identical with the shift position of spool two in valve body two, control fuel tap one and the two aperture all maximum identical with control fuel tap two apertures, thereby oil pressure and the flow of oil supply loop one and oil supply loop two hydraulic oil that provides are all identical, now described hydraulic jacking device one and hydraulic jacking device two are all in running order and the two jacking speed is identical, and two pairs of described hydraulic jacking device one and hydraulic jacking devices need the integral jacking bridge construction synchronously to carry out jacking;
When needing the integral jacking bridge construction to be tilted to the left, the pendulum of slide rheostat synchronously is tilted to the left, now the resistance of BC section resistance is less than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is greater than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two is greater than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one, and electromagnetic attraction>F of acting on spool two of described electromagnetic valve aperture regulation device two 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction<F of spool one 0; Due at electromagnetic attraction F 0under effect, the aperture of control fuel tap one and control fuel tap two is all maximum, and control fuel tap two is for acting on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool two, the aperture of this time control fuel tap two reduces and oil pressure and the flow of oil supply loop two hydraulic oil that provides all reduce, and the jacking speed of described hydraulic jacking device two reduces; Because control fuel tap one is to act on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool one, the aperture of this time control fuel tap one is constant and still in maximum rating, now the oil pressure of oil supply loop one hydraulic oil that provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device two that needs below, integral jacking bridge construction right side reduces, and the jacking speed that is positioned at the described hydraulic jacking device one that needs integral jacking bridge construction left side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat be positioned at the slide rheostat middle part, need the integral jacking bridge construction in the synchronization of jacking up state;
In like manner, when needing the integral jacking bridge construction to be tilted to the right, the pendulum of slide rheostat synchronously is tilted to the right, now the resistance of BC section resistance is greater than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is less than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two is less than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one, and electromagnetic attraction<F of acting on spool two of described electromagnetic valve aperture regulation device two 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction>F of spool one 0; Now, the aperture of control fuel tap one reduces and oil pressure and the flow of oil supply loop one hydraulic oil that provides all reduce, and makes the jacking speed of described hydraulic jacking device one reduce; And the aperture of control fuel tap two is constant and still in maximum rating, the oil pressure of oil supply loop two hydraulic oil that provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device one that needs below, integral jacking bridge construction left side reduces, and the jacking speed that is positioned at the described hydraulic jacking device two that needs integral jacking bridge construction right side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat be positioned at the slide rheostat middle part, need the integral jacking bridge construction in the synchronization of jacking up state.
Above-mentioned cutting bridge abutment integral synchronization of jacking up control method, it is characterized in that: the valve body one of the fuel tap one of control described in step 1 is for having the valve body of oil spilling mouth one on the equal opening in top and the bottom and bottom sidewall, valve body one sealed bottom is arranged on oil supply loop one and its inside communicates with oil supply loop one inside, spool one from top to bottom plug-in mounting enters in valve body one, the upper opening of valve body one carries out shutoff by spool one, described spool one vertically moves up and down and it is adjusted open and-shut mode and the aperture of oil spilling mouth one when vertically moving up and down valve body one is interior under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one,
Need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one, F12 is that in oil supply loop one, hydraulic oil acts on the pressure of oil pressure straight up on spool one, the self gravitation that G1 is spool one, f1 is the frictional force between spool one and valve body one;
The valve body two of described control fuel tap two is for having the valve body of oil spilling mouth two on the equal opening in top and the bottom and bottom sidewall, valve body two sealed bottoms are arranged on oil supply loop two and its inside communicates with oil supply loop two inside, spool two from top to bottom plug-in mounting enters in valve body two, the upper opening of valve body two carries out shutoff by spool two, and described spool two vertically moves up and down and it is adjusted open and-shut mode and the aperture of oil spilling mouth two when vertically moving up and down valve body two is interior under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two;
Need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two, F22 is that in oil supply loop two, hydraulic oil acts on the pressure of oil pressure straight up on spool two, the self gravitation that G2 is spool two, f2 is the frictional force between spool two and valve body two;
While carrying out the jacking preparation in step 1, the stressing conditions of spool one meets formula F 11+F12=G1+f1, making a concerted effort that now spool one in the vertical direction is suffered is zero, and spool one moves to straight down its lowest position and oil spilling mouth one is sealed fully in valve body one, now oil spilling mouth one is in closed condition, and the aperture of control fuel tap one is all maximum; Simultaneously, the stressing conditions of spool two meets formula F 21+F22=G2+f2, now F21=F11=F 0, F12=F22, G1=G2 and f1=f2, thereby now suffered the making a concerted effort of spool two in the vertical directions is zero, and move to straight down its lowest position in valve body two and oil spilling mouth two is sealed fully, now oil spilling mouth two, in closed condition, is controlled the aperture maximum of fuel tap two; Now, the spring force of many described extension springs one and many described extension springs two is zero;
In step 2 when needing the integral jacking bridge construction in equilibrium state, the stressing conditions of spool one meets formula F 11+F12=G1+f1, the stressing conditions of spool two meets formula F 21+F22=G2+f2, and spool one and suffered the making a concerted effort of spool two in the vertical directions be zero, simultaneously F21=F11=F 0, F12=F22, G1=G2 and f1=f2, now oil spilling mouth one and oil spilling mouth two be all in closed condition, and the aperture of control fuel tap one and control fuel tap two is all maximum; Now, the spring force of many described extension springs one and many described extension springs two is zero;
When needing the integral jacking bridge construction to be tilted to the left, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12>F on spool two 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction F11<F of spool one 0; Now, due to spool one, in its lowest position, oil spilling mouth one is still in closed condition, and the aperture of control fuel tap one is constant and, still in maximum rating, now the spring force of many described extension springs one is zero; And spool two under the effect of electromagnetic attraction F12 straight up the motion and its move straight up in oil spilling mouth two open, many described extension springs two synchronously are stretched simultaneously, and constantly move up with spool two, the aperture of oil spilling mouth two constantly increases, and the corresponding aperture of control fuel tap two that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two acts on spool one 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension springs two for spool two, and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state;
In like manner, when needing the integral jacking bridge construction to be tilted to the right, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12<F on spool two 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction F11>F of spool one 0; Now, due to spool two, in its lowest position, oil spilling mouth two is still in closed condition, and the aperture of control fuel tap two is constant and, still in maximum rating, now the spring force of many described extension springs two is zero; And spool one under the effect of electromagnetic attraction F11 straight up the motion and its move straight up in oil spilling mouth one open, many described extension springs one synchronously are stretched simultaneously, and constantly move up with spool one, the aperture of oil spilling mouth one constantly increases, and the corresponding aperture of control fuel tap one that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two acts on spool one 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension springs one for spool one, and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state.
The present invention compared with prior art has the following advantages:
1, the jacking balance state monitoring device adopted is reasonable in design, input cost is low, it is easy to control and stable and reliable working performance, the jack oil inlet quantity control device that specifically adopts slide rheostat and the electromagnetic coil be used in combination and permanent magnet to form, specifically by electromagnetic coil, with permanent magnet, match and control closing and opening of jack oil-feed management and control fuel tap, and then adjust jack oil inlet pipe oil pressure size and realize the control to jacking speed.During actual use, this jacking balance state monitoring device just can automatic accurate monitoring also synchronously start to control and adjust in the uneven discrepancy in elevation of structure generation, thereby has realized synchronism and the promptness that uneven discrepancy in elevation control is adjusted.
2, synchronous control accuracy is high, changes the operator scheme of traditional manual measurement and switch oil pump, has eliminated manually-operated subjectivity error, has realized automatic control and adjustment to the uneven discrepancy in elevation, has avoided occurring than the large unbalance error problem.
3, realize convenient and be easy to control, the jacking balance state monitoring device adopted can be automatically the amount of force between dynamic adjustments electromagnetic coil and permanent magnet incessantly, realize switching speed and the size of control fuel tap to the oil pipe overfall, adjust in real time jack oil inlet pipe oil pressure, reach the purpose of automatic control jack jacking speed, solved traditional artificial regulated efficiency low, control difficult problem.
4, the slide rheostat adopted adopts the slide plate of pendulum formula, because pendulum remains vertical state, thereby when slide rheostat and the displacement of bent cap synchronously inclining its, can automatically effectively adjust the resistance sizes of two parallel operation circuit of slide rheostat access, thereby easy uneven discrepancy in elevation state and resistance parameter effective connection by bent cap got up, and the control procedure effective connection of the uneven discrepancy in elevation state of bent cap and jack import management and control fuel tap being got up by the resistance parameter adjustment, and stable and reliable working performance.
5, the effect between the electromagnetic coil that adopts and permanent magnet belong to the dynamic process of slow variation, the motion state of control fuel tap piston (being spool) defines the some or all of switch of oil pipe overfall, realized the dynamically adjustment in real time to jack oil inlet pipe oil pressure, whole process gradual change, mitigation and steady.
6, reasonable in design and result of use good, practical value is high, by the bent cap left and right sides discrepancy in elevation, change, change the resistance value of two electromagnetic coil current supply circuits of slide rheostat access, realization is redistributed the electric current by two electromagnetic coils, the variation of electric current causes corresponding the changing of size of the magnetic force that produces between electromagnetic coil and permanent magnet, and by the motion conditions of the size of the magnetic force between electromagnetic coil and permanent magnet control control fuel tap piston, thereby the open and close that realize the oil pipe overfall are controlled, and then the oil pressure of adjustment jack oil inlet pipe, the variation of oil pressure causes the variation of jack jacking speed, whole control procedure is a dynamic adjustment process, there is continuity and automatic control preferably.Thereby, that the present invention has is laborsaving, convenient, be easy to control, automaticity is high, harmony good, dynamic control, the advantage such as continuous, efficient, steady of constructing, and can effectively solve the construction difficult problem that bridge pier cutting integral jacking jack synchronization job and the uneven discrepancy in elevation are controlled.
7, popularizing application prospect is extensive, can effectively promote the use of to utilizing the multi-section jack to realize the control procedure by the climbing structure synchronization of jacking up, it be take and controls that the uneven discrepancy in elevation in the jacking process is target by climbing structure, and the jacking speed maintenance structure of adjusting jack by control system is steady.
In sum, the present invention is reasonable in design, automaticity is high, coordination performance is good and security performance is good, it is easy to control, the jacking process is steadily efficient, can effectively solve the uneven elevation difference limit existed in bridge pier cutting integral jacking process and be difficult to realize the construction difficult problem of automatically controlling, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
The accompanying drawing explanation
The installation position schematic diagram that Fig. 1 is slide rheostat that synchronous jacking control system of the present invention adopts.
The fundamental diagram that Fig. 2 is synchronous jacking control system of the present invention.
Description of reference numerals:
1-1-oil supply loop one; 1-2-oil supply loop two; 2-11-valve body one;
2-12-spool one; 2-13-oil spilling mouth one; 2-14-extension spring one;
2-21-valve body two; 2-22-spool two; 2-23-oil spilling mouth two;
2-24-extension spring two; 3-11-electromagnetic coil one; 3-12-permanent magnet one;
3-21-electromagnetic coil two; 3-22-permanent magnet two; 4-slide rheostat;
4-1-slide plate; 5-1-hydraulic jack one; 5-2-hydraulic jack two;
6-1-cutting bridge pier superstructure; 6-2-bent cap; 6-3-bridge superstructure.
The specific embodiment
As Fig. 1, shown in Fig. 2, cutting bridge abutment integral synchronous jacking control system of the present invention, comprise for jacking power being provided and needing make progress two hydraulic jacking devices of horizontal jacking of integral jacking bridge construction integral body, two described hydraulic circuits that join with two described hydraulic jacking devices respectively, be arranged on respectively the jacking balance state monitoring device that in two oil inlet quantity adjusting devices on two described hydraulic circuits and jacking process, the equilibrium state that needs the integral jacking bridge construction is carried out Real-Time Monitoring and according to monitoring result, two described oil inlet quantity adjusting devices carried out to corresponding control.
Two described hydraulic jacking devices are respectively symmetrical and withstand on the hydraulic jacking device one that needs below, the integral jacking bridge construction left and right sides and two, two described hydraulic circuits of hydraulic jacking device and be respectively to described hydraulic jacking device one is carried out oil supply loop one 1-1 of fuel feeding and described hydraulic jacking device two carried out to oil supply loop two 1-2 of fuel feeding.Two described oil inlet quantity adjusting devices are respectively control fuel tap one 2-1 be arranged on oil supply loop one 1-1 and are arranged on control fuel tap two 2-2 on oil supply loop two 1-2, and described control fuel tap one 2-1 is identical with the structure of control fuel tap two 2-2.Described control fuel tap one 2-1 is to the oil pressure of oil supply loop one hydraulic oil that 1-1 provides and oil mass is adjusted and it comprises valve body one 2-11 and is arranged on spool one 2-12 in valve body one 2-11, and described spool one 2-12 makes the aperture to control fuel tap one 2-1 in straight reciprocating motion and its straight reciprocating motion and adjusts accordingly in valve body one 2-11.Described control fuel tap two 2-2 are to the oil pressure of oil supply loop two hydraulic oil that 1-2 provides and oil mass is adjusted and it comprises valve body two 2-21 and is arranged on spool two 2-22 in valve body two 2-21, and described spool two 2-22 make the aperture to control fuel tap two 2-2 in straight reciprocating motion and its straight reciprocating motion and adjust accordingly in valve body two 2-21.Described jacking balance state monitoring device comprises two electromagnetic valve aperture regulation devices and is laid in to be needed on the integral jacking bridge construction and the electromagnetic attraction regulation device that two described electromagnetic valve aperture regulation devices are controlled; Two described electromagnetic valve aperture regulation devices are respectively the electromagnetic valve aperture regulation device one of doing straight reciprocating motion with movable valve plug one 2-12 in valve body one 2-11 and make the electromagnetic valve aperture regulation device two of straight reciprocating motion with movable valve plug two 2-22 in valve body two 2-21, and the power supply circuits phase of described electromagnetic valve aperture regulation device one and electromagnetic valve aperture regulation device two also connects and the two all is connected on power supply.Described control fuel tap one 2-1 is that described electromagnetic valve aperture regulation device one acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool one 2-12, and described control fuel tap two 2-2 are that described electromagnetic valve aperture regulation device two acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool two 2-22.Described electromagnetic attraction regulation device is to be horizontally fixed on the slide rheostat 4 needed on the integral jacking bridge construction, the left and right sides symmetrical configuration of described slide rheostat 4 and its slide plate 4-1 be suspended in need on the integral jacking bridge construction and in the jacking process with the pendulum that needs about integral jacking bridge construction synchronously to be swung to canting, in described slide rheostat 4, the resistance of the slide plate 4-1 left and right sides is respectively BC section resistance and AB section resistance, and the resistance value of BC section resistance and AB section resistance is all carried out respective change with swinging of slide plate 4-1, need integral jacking bridge construction described pendulum when equilibrium state to be positioned at slide rheostat 4 middle parts, need the resistance of integral jacking bridge construction BC section resistance and AB section resistance when equilibrium state to equate and now the resistance of BC section resistance and AB section resistance be r 0.Described AB section resistance is serially connected in the power supply circuits of electromagnetic valve aperture regulation device one, and described BC section resistance is serially connected in the power supply circuits of described electromagnetic valve aperture regulation device two.In actual use procedure, the aperture of described control fuel tap one 2-1 (being the size of valve opening) is less, and oil pressure and the oil mass of oil supply loop one hydraulic oil that 1-1 provides are less; Vice versa.The aperture of described control fuel tap two 2-2 (being the size of valve opening) is less, and oil pressure and the oil mass of oil supply loop two hydraulic oil that 1-2 provides are less; Vice versa.
During physical cabling, the power supply circuits of described electromagnetic valve aperture regulation device one and electromagnetic valve aperture regulation device two are powered by same power supply.
In the present embodiment, described hydraulic jacking device one is jack Q1 for hydraulic jack one 5-1(), the oil inlet pipe interface of the end of oil supply loop one 1-1 and hydraulic jack one 5-1 joins and its other end is connected to fuel reserve tank after oil pump one; Described hydraulic jacking device two is jack Q2 for hydraulic jack two 5-2(), the oil inlet pipe interface of the end of oil supply loop two 1-2 and hydraulic jack two 5-2 joins and its other end is connected to fuel reserve tank after oil pump two.
In the present embodiment, described control fuel tap one 2-1 also comprises that many are vertically to extension spring one 2-14 laid, described spool one 2-12 top is provided with spring fixed seat one, many described extension spring one 2-14 evenly are laid in the spool one 2-12 outside, and the upper end of many described extension spring one 2-14 all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body one 2-11 bottom or oil supply loop one 1-1; Need the integral jacking bridge construction when equilibrium state, the spring force of many described extension spring one 2-14 is zero.
Described valve body one 2-11 has the valve body of oil spilling mouth one 2-13 on the equal opening in top and the bottom and bottom sidewall, valve body one 2-11 sealed bottom be arranged on oil supply loop one 1-1 upper and its innerly with oil supply loop one 1-1 inside, communicate, spool one 2-12 from top to bottom plug-in mounting enters in valve body one 2-11, the upper opening of valve body one 2-11 carries out shutoff by spool one 2-12, described spool one 2-12 vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one in valve body one 2-11 and it is adjusted open and-shut mode and the aperture of oil spilling mouth one 2-13 when vertically moving up and down.Need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one 2-12, F12 is that in oil supply loop one 1-1, hydraulic oil acts on the pressure of oil pressure straight up on spool one 2-12, the self gravitation that G1 is spool one 2-12, f1 is the frictional force between spool one 2-12 and valve body one 2-11.In the present embodiment, the quantity of described extension spring one 2-14 is two, and two extension spring one 2-14 are symmetrical laying.
In the present embodiment, described spring fixed seat one is for being fixed on permanent magnet one 3-12 on spool one 2-12 top, and described spring fixed seat two is for being fixed on permanent magnet two 3-22 on spool two 2-22 tops; Permanent magnet one 3-12 and permanent magnet two 3-22 are circular magnet, permanent magnet one 3-12 and valve body one 2-11 are the external diameter that coaxial laying and its external diameter are greater than valve body one 2-11, and permanent magnet two 3-22 and valve body two 2-21 are the external diameter that coaxial laying and its external diameter are greater than valve body two 2-21.
In the present embodiment, described control fuel tap two 2-2 also comprise that many are vertically to extension spring two 2-24 that lay, described spool two 2-22 tops are provided with spring fixed seat two, many described extension spring two 2-24 evenly are laid in the spool two 2-22 outsides, and the upper end of many described extension spring two 2-24 all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body two 2-24 bottoms or oil supply loop two 1-2; Need the integral jacking bridge construction when equilibrium state, the spring force of many described extension spring two 2-24 is zero.
Described valve body two 2-21 have the valve body of oil spilling mouth two 2-23 on the equal opening in top and the bottom and bottom sidewall, valve body two 2-21 sealed bottoms be arranged on oil supply loop two 1-2 upper and its innerly with oil supply loop two 1-2 inside, communicate, spool two 2-22 from top to bottom plug-in mounting enter in valve body two 2-21, the upper opening of valve body two 2-21 carries out shutoff by spool two 2-22, described spool two 2-22 vertically move up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two in valve body two 2-21 and it is adjusted open and-shut mode and the aperture of oil spilling mouth two 2-23 when vertically moving up and down, need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two 2-22, F22 is that in oil supply loop two 1-2, hydraulic oil acts on the pressure of oil pressure straight up on spool two 2-22, the self gravitation that G2 is spool two 2-22, f2 is the frictional force between spool two 2-22 and valve body two 2-21.In the present embodiment, the quantity of described extension spring two 2-24 is two, and two extension spring two 2-24 are symmetrical laying.
In the present embodiment, described electromagnetic valve aperture regulation device one comprises electromagnetic coil one 3-11 and permanent magnet one 3-12 be used in conjunction with electromagnetic coil one 3-11, described permanent magnet one 3-12 be arranged on spool one 2-12 top and its be positioned at spool one 2-12 directly over, described electromagnetic coil one 3-11 be positioned at permanent magnet one 3-12 directly over and electromagnetic coil one 3-11 maintain static, described electromagnetic coil one 3-11 power on after with permanent magnet one 3-12 between the generation mutual adhesive magnetic attraction.Described electromagnetic valve aperture regulation device two comprises electromagnetic coil two 3-21 and permanent magnet two 3-22 that are used in conjunction with electromagnetic coil two 3-21, described permanent magnet two 3-22 be arranged on spool two 2-22 tops and its be positioned at spool two 2-22 directly over, described electromagnetic coil two 3-21 be positioned at permanent magnet two 3-22 directly over and electromagnetic coil two 3-21 maintain static, described electromagnetic coil two 3-21 power on after with permanent magnet two 3-22 between the generation mutual adhesive magnetic attraction.
In the present embodiment, the power supply circuits of described electromagnetic valve aperture regulation device one are the current supply circuit be connected between described power supply and electromagnetic coil one 3-11, and electromagnetic coil one 3-11 is connected in series mutually with described AB section resistance; The power supply circuits of described electromagnetic valve aperture regulation device two are the current supply circuit be connected between described power supply and electromagnetic coil two 3-21, and electromagnetic coil two 3-21 are connected in series mutually with described BC section resistance.
For easy-to-connect, the two ends, left and right of described slide rheostat 4 are respectively arranged with prap C and prap A, and are provided with prap B on slide plate 4-1.During physical cabling, the positive output end of prap B and described power supply joins, and prap A joins with the negative output terminal of described power supply after electromagnetic coil one 3-11, and prap C joins with the negative output terminal of described power supply after electromagnetic coil two 3-21.
In the present embodiment, described valve body one 2-11 is cylindric valve body, and described spool one 2-12 is the cylindric piston of coaxial laying with valve body one 2-11, and the equal opening in top of valve body one 2-11 is the manhole that bore is identical with spool one 2-12 external diameter; Described valve body two 2-21 are cylindric valve body, and described spool two 2-22 are the cylindric piston of coaxial laying with valve body two 2-21, and the equal opening in top of valve body two 2-21 is the manhole that bore is identical with spool two 2-22 external diameters.
In the present embodiment, described slide rheostat 4 is the circular arc slide rheostat.During actual the use, also can select the slide rheostat 4 of other structure.
In the present embodiment, the described integral jacking bridge construction that needs comprises cutting bridge pier superstructure 6-1, is positioned at the bent cap 6-2 on cutting bridge pier superstructure 6-1 and is laid in the bridge superstructure 6-3 on bent cap 6-2, described bent cap 6-2 is positioned at directly over cutting bridge pier superstructure 6-1 and bridge superstructure 6-3 is positioned at directly over bent cap 6-2, and cut bridge pier is divided into upper and lower two parts and upper and lower two parts are respectively cutting bridge pier superstructure 6-1 and cutting bridge pier substructure.Two symmetrical of described hydraulic jacking devices withstand on the below, the left and right sides of bent cap 6-2.Described slide rheostat 4 is laid on the sidewall of bent cap 6-2, and the top fixed point O of described pendulum be positioned at cutting bridge pier superstructure 6-1 directly over.
To sum up, cutting bridge abutment integral synchronous jacking control system of the present invention, comprise for jacking power being provided and needing make progress two hydraulic jack of horizontal jacking of integral jacking bridge construction integral body, two hydraulic circuits that join with two hydraulic jack respectively, be laid in the slide rheostat 4 on bent cap 6-2, by slide rheostat 4 by the electromagnetic valve aperture regulation device that changes current value and regulated and controled and formed by electromagnetic coil and permanent magnet and controlled and be arranged on respectively two control fuel taps on two described hydraulic circuits by electromagnetic valve aperture regulation device, all be equipped with and make the extension spring of oil spilling mouth in normally off on two described control fuel taps.
Cutting bridge abutment integral synchronization of jacking up control method of the present invention comprises the following steps:
Step 1, jacking are prepared: by described hydraulic jacking device one and hydraulic jacking device two respectively symmetrical withstand on the below, the left and right sides that needs the integral jacking bridge construction, and described hydraulic jacking device one and hydraulic jacking device two are joined with oil supply loop one 1-1 and oil supply loop two 1-2 respectively; Simultaneously, slide rheostat 4 is installed and is made described pendulum be positioned at slide rheostat 4 middle parts needing on the integral jacking bridge construction, now the resistance of BC section resistance and AB section resistance equates and the resistance of the two is r 0; Afterwards, by spool one 2-12 of described electromagnetic valve aperture regulation device one and two couples of control fuel tap one 2-1 of electromagnetic valve aperture regulation device and spool two 2-22 of control fuel tap two 2-2, adjusted respectively, the aperture of control fuel tap one 2-1 and control fuel tap two 2-2 is adjusted to maximum, and now all to be adjusted to oil pressure and the flow of maximum and oil supply loop one 1-1 and oil supply loop two hydraulic oil that 1-2 provides all identical for the oil pressure of oil supply loop one 1-1 and oil supply loop two hydraulic oil that 1-2 provides and flow.
In the present embodiment, described slide rheostat 4 is for being fixed on the circular arc slide rheostat on bent cap 6-2, and the slide plate 4-1 of slide rheostat 4 one hangs on the pendulum of circular arc string mid point of circular arc slide rheostat and it remains vertical state.
Step 2, jacking: need the jacking that makes progress of integral jacking bridge construction by described hydraulic jacking device one and two pairs of hydraulic jacking devices, until will need the jacking of integral jacking bridge construction to preset height; In the jacking process, slide rheostat 4 with need the integral jacking bridge construction synchronously to move up and the pendulum of slide rheostat 4 with needing the integral jacking bridge construction synchronously to carry out the left and right sides inclination, carry out Real-Time Monitoring with the equilibrium state to needing the integral jacking bridge construction: when needing the integral jacking bridge construction in equilibrium state, the pendulum of slide rheostat 4 is positioned at slide rheostat 4 middle parts, and now needs the integral jacking bridge construction in the synchronization of jacking up state; When needing the integral jacking bridge construction left or receding, the pendulum of slide rheostat 4 synchronously tilts to the left or to the right, and now needs the integral jacking bridge construction in the correction state.
When needing the integral jacking bridge construction in equilibrium state, because the pendulum of slide rheostat 4 is positioned at slide rheostat 4 middle parts, now the resistance of BC section resistance and AB section resistance is r 0, according to the parallel circuit shunting principle, the current value of the power supply circuits of the power supply circuits of described electromagnetic valve aperture regulation device two and described electromagnetic valve aperture regulation device one equates and is I 0, now described electromagnetic valve aperture regulation device two acts on electromagnetic attraction that electromagnetic attraction on spool two 2-22 and described electromagnetic valve aperture regulation device one act on spool one 2-12 and equates and be F 0correspondingly the shift position of spool one 2-12 in valve body one 2-11 is identical with the shift position of spool two 2-22 in valve body two 2-21, control fuel tap one 2-1 and the two aperture all maximum identical with control fuel tap two 2-2 apertures, thereby oil pressure and the flow of oil supply loop one 1-1 and oil supply loop two hydraulic oil that 1-2 provides are all identical, now described hydraulic jacking device one and hydraulic jacking device two are all in running order and the two jacking speed is identical, and two pairs of described hydraulic jacking device one and hydraulic jacking devices need the integral jacking bridge construction synchronously to carry out jacking.
When needing the integral jacking bridge construction to be tilted to the left, the pendulum of slide rheostat 4 synchronously is tilted to the left, now the resistance of BC section resistance is less than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is greater than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two 2-22 is greater than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one 2-12, and described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction>F on spool two 2-22 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction<F of spool one 2-12 0; Due at electromagnetic attraction F 0under effect, the aperture of control fuel tap one 2-1 and control fuel tap two 2-2 is all maximum, and control fuel tap two 2-2 are the less by-pass valve control of larger its aperture of electromagnetic attraction acted on spool two 2-22, the aperture of this time control fuel tap two 2-2 reduces and oil pressure and the flow of oil supply loop two hydraulic oil that 1-2 provides all reduce, and the jacking speed of described hydraulic jacking device two reduces; Due to the control fuel tap, one 2-1 is the less by-pass valve control of larger its aperture of electromagnetic attraction acted on spool one 2-12, the aperture of this time control fuel tap one 2-1 is constant and still in maximum rating, now the oil pressure of oil supply loop one hydraulic oil that 1-1 provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device two that needs below, integral jacking bridge construction right side reduces, and the jacking speed that is positioned at the described hydraulic jacking device one that needs integral jacking bridge construction left side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat 4 be positioned at slide rheostat 4 middle parts, need the integral jacking bridge construction in the synchronization of jacking up state.
In like manner, when needing the integral jacking bridge construction to be tilted to the right, the pendulum of slide rheostat 4 synchronously is tilted to the right, now the resistance of BC section resistance is greater than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is less than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two 2-22 is less than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one 2-12, and described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction<F on spool two 2-22 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction>F of spool one 2-12 0; Now, the aperture of control fuel tap one 2-1 reduces and oil pressure and the flow of oil supply loop one hydraulic oil that 1-1 provides all reduce, and makes the jacking speed of described hydraulic jacking device one reduce; And the aperture of control fuel tap two 2-2 is constant and still in maximum rating, the oil pressure of oil supply loop two hydraulic oil that 1-2 provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device one that needs below, integral jacking bridge construction left side reduces, and the jacking speed that is positioned at the described hydraulic jacking device two that needs integral jacking bridge construction right side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat 4 be positioned at slide rheostat 4 middle parts, need the integral jacking bridge construction in the synchronization of jacking up state.
In the present embodiment, valve body one 2-11 of the fuel tap of control described in step 1 one 2-1 has the valve body of oil spilling mouth one 2-13 on the equal opening in top and the bottom and bottom sidewall, valve body one 2-11 sealed bottom be arranged on oil supply loop one 1-1 upper and its innerly with oil supply loop one 1-1 inside, communicate, spool one 2-12 from top to bottom plug-in mounting enters in valve body one 2-11, the upper opening of valve body one 2-11 carries out shutoff by spool one 2-12, described spool one 2-12 vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one in valve body one 2-11 and it is adjusted open and-shut mode and the aperture of oil spilling mouth one 2-13 when vertically moving up and down.
Need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one 2-12, F12 is that in oil supply loop one 1-1, hydraulic oil acts on the pressure of oil pressure straight up on spool one 2-12, the self gravitation that G1 is spool one 2-12, f1 is the frictional force between spool one 2-12 and valve body one 2-11.
Valve body two 2-21 of described control fuel tap two 2-2 have the valve body of oil spilling mouth two 2-23 on the equal opening in top and the bottom and bottom sidewall, valve body two 2-21 sealed bottoms be arranged on oil supply loop two 1-2 upper and its innerly with oil supply loop two 1-2 inside, communicate, spool two 2-22 from top to bottom plug-in mounting enter in valve body two 2-21, the upper opening of valve body two 2-21 carries out shutoff by spool two 2-22, described spool two 2-22 vertically move up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two in valve body two 2-21 and it is adjusted open and-shut mode and the aperture of oil spilling mouth two 2-23 when vertically moving up and down.
Need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two 2-22, F22 is that in oil supply loop two 1-2, hydraulic oil acts on the pressure of oil pressure straight up on spool two 2-22, the self gravitation that G2 is spool two 2-22, f2 is the frictional force between spool two 2-22 and valve body two 2-21.
In the present embodiment, while carrying out the jacking preparation in step 1, the stressing conditions of spool one 2-12 meets formula F 11+F12=G1+f1, now suffered the making a concerted effort of spool one 2-12 in the vertical direction is zero, and spool one 2-12 moves to straight down its lowest position and oil spilling mouth one 2-13 is sealed fully in valve body one 2-11, now oil spilling mouth one 2-13 is in closed condition, and the aperture of control fuel tap one 2-1 is all maximum; Simultaneously, the stressing conditions of spool two 2-22 meets formula F 21+F22=G2+f2, now F21=F11=F 0f12=F22, G1=G2 and f1=f2, thereby now suffered the making a concerted effort of spool two 2-22 in the vertical directions is zero, and move to straight down its lowest position in valve body two 2-21 and oil spilling mouth two 2-23 are sealed fully, now oil spilling mouth two 2-23, in closed condition, are controlled the aperture maximum of fuel tap two 2-2; Now, the spring force of many described extension spring one 2-14 and described extension spring two 2-24 of Duo Gen is zero.
During actual the use, after connecting power supply and each assembly of system being debugged, the described electromagnetic valve aperture regulation device one be in parallel and the power supply circuits of electromagnetic valve aperture regulation device two are all started working, start two jack and start jacking, the magnetic force now produced between electromagnetic coil and permanent magnet and oil circuit pressure sum equal to control the deadweight of fuel tap spool and spool and the frictional force of cylinder body on every side, and extension spring is in being about to stress.
In step 2 when needing the integral jacking bridge construction in equilibrium state, the stressing conditions of spool one 2-12 meets formula F 11+F12=G1+f1, the stressing conditions of spool two 2-22 meets formula F 21+F22=G2+f2, and spool one 2-12 and suffered the making a concerted effort of spool two 2-22 in the vertical directions are zero, simultaneously F21=F11=F 0, F12=F22, G1=G2 and f1=f2, now oil spilling mouth one 2-13 and oil spilling mouth two 2-23 are all in closed condition, and the aperture of control fuel tap one 2-1 and control fuel tap two 2-2 is all maximum; Now, the spring force of many described extension spring one 2-14 and described extension spring two 2-24 of Duo Gen is zero.
When needing the integral jacking bridge construction to be tilted to the left, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12>F on spool two 2-22 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction F11<F of spool one 2-12 0; Now, due to spool one 2-12, in its lowest position, oil spilling mouth one 2-13 is still in closed condition, and the aperture of control fuel tap one 2-1 is constant and, still in maximum rating, now the spring force of many described extension spring one 2-14 is zero; And spool two 2-22 under the effect of electromagnetic attraction F12 straight up the motion and its move straight up in oil spilling mouth two 2-23 open, many described extension spring two 2-24 synchronously are stretched simultaneously, and two 2-22 constantly move up with spool, the aperture of oil spilling mouth two 2-23 constantly increases, and the corresponding aperture of control fuel tap two 2-2 that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two 2-22 acts on spool one 2-12 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension spring two 2-24 for spool two 2-22, and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state.
In like manner, when needing the integral jacking bridge construction to be tilted to the right, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12<F on spool two 2-22 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction F11>F of spool one 2-12 0; Now, due to spool two 2-22, in its lowest position, oil spilling mouth two 2-23 are still in closed condition, and the aperture of control fuel tap two 2-2 is constant and, still in maximum rating, now the spring force of many described extension spring two 2-24 is zero; And spool one 2-12 under the effect of electromagnetic attraction F11 straight up the motion and its move straight up in oil spilling mouth one 2-13 open, many described extension spring one 2-14 synchronously are stretched simultaneously, and one 2-12 constantly moves up with spool, the aperture of oil spilling mouth one 2-13 constantly increases, and the corresponding aperture of control fuel tap one 2-1 that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two 2-22 acts on spool one 2-12 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension spring one 2-14 for spool one 2-12, and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state.
Thereby, in the jacking process, as bent cap 6-2 during in horizontal run-off the straight (take low right side, left side high be example), it is vertical that the pendulum of slide rheostat 4 remains, thereby the resistance that makes slide rheostat 4 left and right sides resistance (being BC section resistance and AB section resistance) adjusts accordingly with the canting of bent cap 6-2, specifically AB section resistance becomes large, BC section resistance diminishes, according to the parallel circuit shunting principle, electric current by electromagnetic coil one 3-11 reduces, the contrary electric current by electromagnetic coil two 3-21 increases, then the magnetic force that electromagnetic coil two 3-21 produce spool two 2-22 permanent magnet that outer end fills two 3-22 increases, make spool two 2-22 move up (specifically slowly springing up to electromagnetic coil two 3-21 mono-sides), extension spring two 2-24 are stretched, along with spool two 2-22, to electromagnetic coil two 3-21 mono-lateral movements, oil spilling mouth two 2-23 are partly opened and make the oil pressure of oil supply loop two 1-2 shunt, and the oil inlet pipe oil pressure of hydraulic jack two 5-2 reduces, and then jacking speed slows down, but meanwhile, the oil inlet pipe oil pressure of hydraulic jack one 5-1 remains unchanged, the jacking velocity-stabilization, thereby realize that by the jacking speed of adjusting two jack it is to needing the synchronization of jacking up of integral jacking bridge construction, along with the both lateral sides discrepancy in elevation of bent cap 6-2 reduces, the pendulum of slide rheostat 4 resets gradually, specifically the resistance of BC section resistance diminishes and starts to increase and be tending towards equating with the resistance of AB section resistance, until the electric current by electromagnetic coil two 3-21 reduces gradually and is returned to the numerical value while starting jacking, and correspondingly make the electromagnetic attraction between electromagnetic coil two 3-21 and permanent magnet two 3-22 weaken, under the effect of extension spring two 2-24, spool two 2-22 move downward (specifically extension spring two 2-24 mono-lateral movements), progressively close oil spilling mouth two 2-23, the oil inlet pipe oil pressure of hydraulic jack two 5-2 is returned to jacking and starts oil pressure, the jacking speed of jack Q1 and Q2 reaches unanimity.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.

Claims (10)

1. a cutting bridge abutment integral synchronous jacking control system is characterized in that: comprise for jacking power is provided and will need integral jacking bridge construction integral body make progress two hydraulic jacking devices of horizontal jacking, two hydraulic circuits that join with two described hydraulic jacking devices respectively, be arranged on the jacking balance state monitoring device that two oil inlet quantity adjusting devices on two described hydraulic circuits and jacking process are carried out Real-Time Monitoring and according to monitoring result, two described oil inlet quantity adjusting devices carried out to corresponding control the equilibrium state that needs the integral jacking bridge construction respectively;
Two described hydraulic jacking devices are respectively symmetrical and withstand on the hydraulic jacking device one that needs below, the integral jacking bridge construction left and right sides and two, two described hydraulic circuits of hydraulic jacking device and be respectively to described hydraulic jacking device one is carried out the oil supply loop one (1-1) of fuel feeding and described hydraulic jacking device two carried out to the oil supply loop two (1-2) of fuel feeding, two described oil inlet quantity adjusting devices are respectively the control fuel tap one (2-1) be arranged on oil supply loop one (1-1) and are arranged on the control fuel tap two (2-2) on oil supply loop two (1-2), and described control fuel tap one (2-1) is identical with the structure of control fuel tap two (2-2), described control fuel tap one (2-1) is to the oil pressure of oil supply loop one (1-1) hydraulic oil that provides and oil mass is adjusted and it comprises valve body one (2-11) and is arranged on the spool one (2-12) in valve body one (2-11), and described spool one (2-12) is made the aperture to control fuel tap one (2-1) in straight reciprocating motion and its straight reciprocating motion and adjusted accordingly in valve body one (2-11), described control fuel tap two (2-2) is to the oil pressure of oil supply loop two (1-2) hydraulic oil that provides and oil mass is adjusted and it comprises valve body two (2-21) and is arranged on the spool two (2-22) in valve body two (2-21), and described spool two (2-22) is made the aperture to control fuel tap two (2-2) in straight reciprocating motion and its straight reciprocating motion and adjusted accordingly in valve body two (2-21), described jacking balance state monitoring device comprises two electromagnetic valve aperture regulation devices and is laid in to be needed on the integral jacking bridge construction and the electromagnetic attraction regulation device that two described electromagnetic valve aperture regulation devices are controlled, two described electromagnetic valve aperture regulation devices are respectively band movable valve plug one (2-12) and make the electromagnetic valve aperture regulation device one of straight reciprocating motion and the electromagnetic valve aperture regulation device two that band movable valve plug two (2-22) is done straight reciprocating motion in valve body two (2-21) in valve bodies one (2-11), and the power supply circuits phase of described electromagnetic valve aperture regulation device one and electromagnetic valve aperture regulation device two also connects and the two all is connected on power supply, described control fuel tap one (2-1) acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool one (2-12) for described electromagnetic valve aperture regulation device one, and described control fuel tap two (2-2) acts on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool two (2-22) for described electromagnetic valve aperture regulation device two, described electromagnetic attraction regulation device is to be horizontally fixed on the slide rheostat (4) needed on the integral jacking bridge construction, the left and right sides symmetrical configuration of described slide rheostat (4) and its slide plate (4-1) for be suspended in need on the integral jacking bridge construction and in the jacking process with the pendulum that needs about integral jacking bridge construction synchronously to be swung to canting, in described slide rheostat (4), the resistance of slide plate (4-1) left and right sides is respectively BC section resistance and AB section resistance, and the resistance value of BC section resistance and AB section resistance is all carried out respective change with swinging of slide plate (4-1), need integral jacking bridge construction described pendulum when equilibrium state to be positioned at slide rheostat (4) middle part, need the resistance of integral jacking bridge construction BC section resistance and AB section resistance when equilibrium state to equate and now the resistance of BC section resistance and AB section resistance be r 0, described AB section resistance is serially connected in the power supply circuits of electromagnetic valve aperture regulation device one, and described BC section resistance is serially connected in the power supply circuits of described electromagnetic valve aperture regulation device two.
2. according to a kind of cutting bridge abutment integral synchronous jacking control system claimed in claim 1, it is characterized in that: described hydraulic jacking device one is hydraulic jack one (5-1), and the oil inlet pipe interface of an end of oil supply loop one (1-1) and hydraulic jack one (5-1) joins and its other end is connected to fuel reserve tank after oil pump one; Described hydraulic jacking device two is hydraulic jack two (5-2), and the oil inlet pipe interface of an end of oil supply loop two (1-2) and hydraulic jack two (5-2) joins and its other end is connected to fuel reserve tank after oil pump two.
3. according to the described a kind of cutting bridge abutment integral synchronous jacking control system of claim 1 or 2, it is characterized in that: described control fuel tap one (2-1) also comprises that many are vertically to the extension spring one (2-14) of laying, described spool one (2-12) top is provided with spring fixed seat one, many described extension springs one (2-14) evenly are laid in spool one (2-12) outside, the upper end of many described extension springs one (2-14) all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body one (2-11) bottom or oil supply loop one (1-1), need the integral jacking bridge construction when equilibrium state, the spring force of many described extension springs one (2-14) is zero,
Described valve body one (2-11) is for having the valve body of oil spilling mouth one (2-13) on the equal opening in top and the bottom and bottom sidewall, valve body one (2-11) sealed bottom be arranged on oil supply loop one (1-1) upper and its innerly with oil supply loop one (1-1) inside, communicate, spool one (2-12) from top to bottom plug-in mounting enters in valve body one (2-11), the upper opening of valve body one (2-11) carries out shutoff by spool one (2-12), described spool one (2-12) vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one in valve body one (2-11) and it is adjusted open and-shut mode and the aperture of oil spilling mouth one (2-13) when vertically moving up and down, need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one (2-12), F12 is that in oil supply loop one (1-1), hydraulic oil acts on the pressure of oil pressure straight up on spool one (2-12), the self gravitation that G1 is spool one (2-12), f1 is the frictional force between spool one (2-12) and valve body one (2-11),
Described control fuel tap two (2-2) also comprises that many are vertically to the extension spring two (2-24) of laying, described spool two (2-22) top is provided with spring fixed seat two, many described extension springs two (2-24) evenly are laid in spool two (2-22) outside, and the upper end of many described extension springs two (2-24) all is fixed on described spring fixed seat one and its bottom all is fixed on the outer wall of valve body two (2-24) bottom or oil supply loop two (1-2); Need the integral jacking bridge construction when equilibrium state, the spring force of many described extension springs two (2-24) is zero;
Described valve body two (2-21) is for having the valve body of oil spilling mouth two (2-23) on the equal opening in top and the bottom and bottom sidewall, valve body two (2-21) sealed bottom be arranged on oil supply loop two (1-2) upper and its innerly with oil supply loop two (1-2) inside, communicate, spool two (2-22) from top to bottom plug-in mounting enters in valve body two (2-21), the upper opening of valve body two (2-21) carries out shutoff by spool two (2-22), described spool two (2-22) vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two in valve body two (2-21) and it is adjusted open and-shut mode and the aperture of oil spilling mouth two (2-23) when vertically moving up and down, need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two (2-22), F22 is that in oil supply loop two (1-2), hydraulic oil acts on the pressure of oil pressure straight up on spool two (2-22), the self gravitation that G2 is spool two (2-22), f2 is the frictional force between spool two (2-22) and valve body two (2-21).
4. according to the described a kind of cutting bridge abutment integral synchronous jacking control system of claim 1 or 2, it is characterized in that: described electromagnetic valve aperture regulation device one comprises electromagnetic coil one (3-11) and the permanent magnet one (3-12) be used in conjunction with electromagnetic coil one (3-11), described permanent magnet one (3-12) be arranged on spool one (2-12) top and its be positioned at spool one (2-12) directly over, described electromagnetic coil one (3-11) be positioned at permanent magnet one (3-12) directly over and electromagnetic coil one (3-11) maintain static, described electromagnetic coil one (3-11) powers on and produces the magnetic attraction of mutual adhesive between rear and permanent magnet one (3-12), described electromagnetic valve aperture regulation device two comprises electromagnetic coil two (3-21) and the permanent magnet two (3-22) be used in conjunction with electromagnetic coil two (3-21), described permanent magnet two (3-22) be arranged on spool two (2-22) top and its be positioned at spool two (2-22) directly over, described electromagnetic coil two (3-21) be positioned at permanent magnet two (3-22) directly over and electromagnetic coil two (3-21) maintain static, described electromagnetic coil two (3-21) power on after with permanent magnet two (3-22) between the generation mutual adhesive magnetic attraction.
5. according to a kind of cutting bridge abutment integral synchronous jacking control system claimed in claim 4, it is characterized in that: the power supply circuits of described electromagnetic valve aperture regulation device one are for to be connected on the current supply circuit between described power supply and electromagnetic coil one (3-11), and electromagnetic coil one (3-11) is connected in series mutually with described AB section resistance; The power supply circuits of described electromagnetic valve aperture regulation device two are for to be connected on the current supply circuit between described power supply and electromagnetic coil two (3-21), and electromagnetic coil two (3-21) is connected in series mutually with described BC section resistance.
6. according to a kind of cutting bridge abutment integral synchronous jacking control system claimed in claim 3, it is characterized in that: described valve body one (2-11) is cylindric valve body, described spool one (2-12) is to be the cylindric piston of coaxial laying with valve body one (2-11), and the equal opening in top of valve body one (2-11) is the manhole that bore is identical with spool one (2-12) external diameter; Described valve body two (2-21) is cylindric valve body, described spool two (2-22) is to be the cylindric piston of coaxial laying with valve body two (2-21), and the equal opening in top of valve body two (2-21) is the manhole that bore is identical with spool two (2-22) external diameter.
7. according to the described a kind of cutting bridge abutment integral synchronous jacking control system of claim 1 or 2, it is characterized in that: described slide rheostat (4) is the circular arc slide rheostat.
8. according to the described a kind of cutting bridge abutment integral synchronous jacking control system of claim 1 or 2, it is characterized in that: the described integral jacking bridge construction that needs comprises cutting bridge pier superstructure (6-1), be positioned at the bent cap (6-2) on cutting bridge pier superstructure (6-1) and be laid in the bridge superstructure (6-3) on bent cap (6-2), described bent cap (6-2) is positioned at directly over cutting bridge pier superstructure (6-1) and bridge superstructure (6-3) is positioned at directly over bent cap (6-2), cut bridge pier is divided into upper and lower two parts and upper and lower two parts are respectively cutting bridge pier superstructure (6-1) and cutting bridge pier substructure, two symmetrical of described hydraulic jacking devices withstand on the below, the left and right sides of bent cap (6-2), described slide rheostat (4) is laid on the sidewall of bent cap (6-2), and the top fixed point O of described pendulum be positioned at the cutting bridge pier superstructure (6-1) directly over.
9. one kind is utilized the control method that control system is carried out synchronization of jacking up to the cutting bridge abutment integral as claimed in claim 1, it is characterized in that the method comprises the following steps:
Step 1, jacking are prepared: by described hydraulic jacking device one and hydraulic jacking device two respectively symmetrical withstand on the below, the left and right sides that needs the integral jacking bridge construction, and described hydraulic jacking device one and hydraulic jacking device two are joined with oil supply loop one (1-1) and oil supply loop two (1-2) respectively; Simultaneously, needing on the integral jacking bridge construction that slide rheostat (4) is installed and making described pendulum be positioned at slide rheostat (4) middle part, now the resistance of BC section resistance and AB section resistance equates and the resistance of the two is r 0; Afterwards, by the spool one (2-12) of described electromagnetic valve aperture regulation device one and two pairs of control fuel taps one of electromagnetic valve aperture regulation device (2-1) and the spool two (2-22) of control fuel tap two (2-2), adjusted respectively, the aperture that to control fuel tap one (2-1) and control fuel tap two (2-2) is adjusted to maximum, and now that oil pressure and the flow of maximum and oil supply loop one (1-1) and oil supply loop two (1-2) hydraulic oil that provides all is provided is all identical for the oil pressure of oil supply loop one (1-1) and oil supply loop two (1-2) hydraulic oil that provides and flow;
Step 2, jacking: need the jacking that makes progress of integral jacking bridge construction by described hydraulic jacking device one and two pairs of hydraulic jacking devices, until will need the jacking of integral jacking bridge construction to preset height; In the jacking process, slide rheostat (4) with need the integral jacking bridge construction synchronously to move up and the pendulum of slide rheostat (4) with needing the integral jacking bridge construction synchronously to carry out the left and right sides inclination, carry out Real-Time Monitoring with the equilibrium state to needing the integral jacking bridge construction: when needing the integral jacking bridge construction in equilibrium state, the pendulum of slide rheostat (4) is positioned at slide rheostat (4) middle part, and now needs the integral jacking bridge construction in the synchronization of jacking up state; When needing the integral jacking bridge construction left or receding, the pendulum of slide rheostat (4) synchronously tilts to the left or to the right, and now needs the integral jacking bridge construction in the correction state;
When needing the integral jacking bridge construction in equilibrium state, because the pendulum of slide rheostat (4) is positioned at slide rheostat (4) middle part, now the resistance of BC section resistance and AB section resistance is r 0, according to the parallel circuit shunting principle, the current value of the power supply circuits of the power supply circuits of described electromagnetic valve aperture regulation device two and described electromagnetic valve aperture regulation device one equates and is I 0, now described electromagnetic valve aperture regulation device two acts on electromagnetic attraction that electromagnetic attraction on spool two (2-22) and described electromagnetic valve aperture regulation device one act on spool one (2-12) and equates and be F 0, correspondingly the shift position of spool one (2-12) in valve body one (2-11) is identical with the shift position of spool two (2-22) in valve body two (2-21), control fuel tap one (2-1) and the two aperture all maximum identical with control fuel tap two (2-2) aperture, thereby oil pressure and the flow of oil supply loop one (1-1) and oil supply loop two (1-2) hydraulic oil that provides are all identical, now described hydraulic jacking device one and hydraulic jacking device two are all in running order and the two jacking speed is identical, two pairs of described hydraulic jacking device one and hydraulic jacking devices need the integral jacking bridge construction synchronously to carry out jacking,
When needing the integral jacking bridge construction to be tilted to the left, the pendulum of slide rheostat (4) synchronously is tilted to the left, now the resistance of BC section resistance is less than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is greater than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two (2-22) is greater than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one (2-12), and described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction>F on spool two (2-22) 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction<F of spool one (2-12) 0; Due at electromagnetic attraction F 0under effect, the aperture that to control fuel tap one (2-1) and control fuel tap two (2-2) is all maximum, and control fuel tap two (2-2) is for acting on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool two (2-22), the aperture of this time control fuel tap two (2-2) reduces and oil pressure and the flow of oil supply loop two (1-2) hydraulic oil that provides all reduce, and the jacking speed of described hydraulic jacking device two reduces; Because control fuel tap one (2-1) is to act on the less by-pass valve control of larger its aperture of electromagnetic attraction on spool one (2-12), the aperture of this time control fuel tap one (2-1) is constant and still in maximum rating, now the oil pressure of oil supply loop one (1-1) hydraulic oil that provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device two that needs below, integral jacking bridge construction right side reduces, and the jacking speed that is positioned at the described hydraulic jacking device one that needs integral jacking bridge construction left side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat (4) be positioned at slide rheostat (4) middle part, need the integral jacking bridge construction in the synchronization of jacking up state;
In like manner, when needing the integral jacking bridge construction to be tilted to the right, the pendulum of slide rheostat (4) synchronously is tilted to the right, now the resistance of BC section resistance is greater than the resistance of AB section resistance, according to the parallel circuit shunting principle, the electric current of the power supply circuits of described electromagnetic valve aperture regulation device two is less than the electric current of the power supply circuits of described electromagnetic valve aperture regulation device one, and the electric current<I of the power supply circuits of described electromagnetic valve aperture regulation device two 0, the electric current>I of the power supply circuits of described electromagnetic valve aperture regulation device one 0; The electromagnetic attraction that correspondingly now described electromagnetic valve aperture regulation device two acts on spool two (2-22) is less than the electromagnetic attraction that described electromagnetic valve aperture regulation device one acts on spool one (2-12), and described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction<F on spool two (2-22) 0, described electromagnetic valve aperture regulation device one acts on electromagnetic attraction>F of spool one (2-12) 0; Now, the aperture of control fuel tap one (2-1) reduces and oil pressure and the flow of oil supply loop one (1-1) hydraulic oil that provides all reduce, and makes the jacking speed of described hydraulic jacking device one reduce; And the aperture of control fuel tap two (2-2) is constant and still in maximum rating, the oil pressure of oil supply loop two (1-2) hydraulic oil that provides and flow remains unchanged and the jacking speed of described hydraulic jacking device one is constant; Thereby, because the jacking speed that is positioned at the described hydraulic jacking device one that needs below, integral jacking bridge construction left side reduces, and the jacking speed that is positioned at the described hydraulic jacking device two that needs integral jacking bridge construction right side below is constant, needs the discrepancy in elevation between the integral jacking bridge construction left and right sides to reduce gradually and be adjusted into gradually equilibrium state; And after needing the integral jacking bridge construction to be adjusted into equilibrium state, the correction process finish and now the pendulum of slide rheostat (4) be positioned at slide rheostat (4) middle part, need the integral jacking bridge construction in the synchronization of jacking up state.
10. according to control method claimed in claim 9, it is characterized in that: the valve body one (2-11) of control fuel tap one (2-1) described in step 1 is for having the valve body of oil spilling mouth one (2-13) on the equal opening in top and the bottom and bottom sidewall, valve body one (2-11) sealed bottom be arranged on oil supply loop one (1-1) upper and its innerly with oil supply loop one (1-1) inside, communicate, spool one (2-12) from top to bottom plug-in mounting enters in valve body one (2-11), the upper opening of valve body one (2-11) carries out shutoff by spool one (2-12), described spool one (2-12) vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device one in valve body one (2-11) and it is adjusted open and-shut mode and the aperture of oil spilling mouth one (2-13) when vertically moving up and down,
Need the integral jacking bridge construction when equilibrium state, F11+F12=G1+f1, in formula, F11 is that described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction straight up on spool one (2-12), F12 is that in oil supply loop one (1-1), hydraulic oil acts on the pressure of oil pressure straight up on spool one (2-12), the self gravitation that G1 is spool one (2-12), f1 is the frictional force between spool one (2-12) and valve body one (2-11);
The valve body two (2-21) of described control fuel tap two (2-2) is for having the valve body of oil spilling mouth two (2-23) on the equal opening in top and the bottom and bottom sidewall, valve body two (2-21) sealed bottom be arranged on oil supply loop two (1-2) upper and its innerly with oil supply loop two (1-2) inside, communicate, spool two (2-22) from top to bottom plug-in mounting enters in valve body two (2-21), the upper opening of valve body two (2-21) carries out shutoff by spool two (2-22), described spool two (2-22) vertically moves up and down under the electromagnetic attraction effect of described electromagnetic valve aperture regulation device two in valve body two (2-21) and it is adjusted open and-shut mode and the aperture of oil spilling mouth two (2-23) when vertically moving up and down,
Need the integral jacking bridge construction when equilibrium state, F21+F22=G2+f2, in formula, F21 is that described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction straight up on spool two (2-22), F22 is that in oil supply loop two (1-2), hydraulic oil acts on the pressure of oil pressure straight up on spool two (2-22), the self gravitation that G2 is spool two (2-22), f2 is the frictional force between spool two (2-22) and valve body two (2-21);
While carrying out the jacking preparation in step 1, the stressing conditions of spool one (2-12) meets formula F 11+F12=G1+f1, now suffered the making a concerted effort of spool one (2-12) in the vertical direction is zero, and spool one (2-12) moves to straight down its lowest position and oil spilling mouth one (2-13) is sealed fully in valve body one (2-11), now oil spilling mouth one (2-13) is in closed condition, and the aperture of control fuel tap one (2-1) is all maximum; Simultaneously, the stressing conditions of spool two (2-22) meets formula F 21+F22=G2+f2, now F21=F11=F 0f12=F22, G1=G2 and f1=f2, thereby now suffered the making a concerted effort of spool two (2-22) in the vertical direction is zero, and move to straight down its lowest position in valve body two (2-21) and oil spilling mouth two (2-23) is sealed fully, now oil spilling mouth two (2-23), in closed condition, is controlled the aperture maximum of fuel tap two (2-2); Now, the spring force of many described extension springs one (2-14) and many described extension springs two (2-24) is zero;
In step 2 when needing the integral jacking bridge construction in equilibrium state, the stressing conditions of spool one (2-12) meets formula F 11+F12=G1+f1, the stressing conditions of spool two (2-22) meets formula F 21+F22=G2+f2, and spool one (2-12) and suffered the making a concerted effort of spool two (2-22) in the vertical direction are zero, simultaneously F21=F11=F 0, F12=F22, G1=G2 and f1=f2, now oil spilling mouth one (2-13) and oil spilling mouth two (2-23) be all in closed condition, and the equal maximum of the aperture of control fuel tap one (2-1) and control fuel tap two (2-2); Now, the spring force of many described extension springs one (2-14) and many described extension springs two (2-24) is zero;
When needing the integral jacking bridge construction to be tilted to the left, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12>F on spool two (2-22) 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction F11<F of spool one (2-12) 0; Now, due to spool one (2-12) in its lowest position, oil spilling mouth one (2-13) is still in closed condition, and the aperture of control fuel tap one (2-1) is constant and, still in maximum rating, now the spring force of many described extension springs one (2-14) is zero; And spool two (2-22) under the effect of electromagnetic attraction F12 straight up the motion and its move straight up in oil spilling mouth two (2-23) open, many described extension springs two (2-24) synchronously are stretched simultaneously, and constantly move up with spool two (2-22), the aperture of oil spilling mouth two (2-23) constantly increases, and the corresponding aperture of control fuel tap two (2-2) that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two (2-22) acts on spool one (2-12) 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension springs two (2-24) for spool two (2-22), and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state;
In like manner, when needing the integral jacking bridge construction to be tilted to the right, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F12<F on spool two (2-22) 0, described electromagnetic valve aperture regulation device one acts on the electromagnetic attraction F11>F of spool one (2-12) 0; Now, due to spool two (2-22) in its lowest position, oil spilling mouth two (2-23) is still in closed condition, and the aperture of control fuel tap two (2-2) is constant and, still in maximum rating, now the spring force of many described extension springs two (2-24) is zero; And spool one (2-12) under the effect of electromagnetic attraction F11 straight up the motion and its move straight up in oil spilling mouth one (2-13) open, many described extension springs one (2-14) synchronously are stretched simultaneously, and constantly move up with spool one (2-12), the aperture of oil spilling mouth one (2-13) constantly increases, and the corresponding aperture of control fuel tap one (2-1) that makes reduces; And, after needing the integral jacking bridge construction to be adjusted into equilibrium state, described electromagnetic valve aperture regulation device two acts on the electromagnetic attraction F11=F that the described electromagnetic valve aperture of electromagnetic attraction F12=regulation device one on spool two (2-22) acts on spool one (2-12) 0, motion straight down is until move to its lowest position under the elastic force effect of many described extension springs one (2-14) for spool one (2-12), and corresponding making needs the integral jacking bridge construction in the synchronization of jacking up state.
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