CN102953550A - Manual-automatic integrated tensioning system - Google Patents
Manual-automatic integrated tensioning system Download PDFInfo
- Publication number
- CN102953550A CN102953550A CN2012103722180A CN201210372218A CN102953550A CN 102953550 A CN102953550 A CN 102953550A CN 2012103722180 A CN2012103722180 A CN 2012103722180A CN 201210372218 A CN201210372218 A CN 201210372218A CN 102953550 A CN102953550 A CN 102953550A
- Authority
- CN
- China
- Prior art keywords
- control
- hydraulic
- jack
- manual
- automatic integrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a manual-automatic integrated tensioning system comprising a hydraulic oil cylinder jack, a hydraulic system, a control cabinet, a manual-automatic switching circuit and a sensor group, wherein the hydraulic system comprises an oil tank, a hydraulic pump, a motor, a variable frequency control system and a servo proportional control system; the variable frequency control system comprises a frequency converter for controlling the rotating speed of the motor; the servo proportional control system comprises a servo proportional valve arranged between the hydraulic pump and the hydraulic oil cylinder jack; a hydraulic control one-way valve is arranged between the servo proportional valve and the hydraulic oil cylinder jack; an unloading control bypass is arranged between the hydraulic control one-way valve and the servo proportional valve; an electromagnetic valve and a controllable unloading device are arranged on the unloading control bypass; a central processing system, an execution control system connected with the central processing system and a communication module connected with the execution control system are arranged in the control cabinet; and a data wire interface and/or a radio station are/is arranged on the communication module.
Description
Technical field
The invention belongs to the Construction of Civil Engineering equipment technical field, concrete is a kind of manual-automatic integrated tensioning system for prestressed stretch-draw.
Background technology
Prestressing technique is used widely in civil engineering.According to the preliminary statistics, ended for the end of the year 2011, the highway in China bridge reaches 68.94 ten thousand, 3349.44 myriametres, wherein adopts the bridge engineering of prestressed structure to account for more than 90% of total amount.Simultaneously, prestressing technique has become in large span, large spatial structure, tall and slender structure, heavy structure, unique construction and the new structure engineering an indispensable technical development to a plurality of fields such as graded crossing building, ocean structure, atomic reactor container and extraordinary labyrinths.
But meanwhile, because the impact of various factors, the Partial Bridges structure construction is of poor quality, causes construction and uses the Bridge cave-in accident to happen occasionally.In recent years, the quality accident that causes owing to the prestressing force reason occurs again and again, disturbs, ftractures under serious such as the beam body, even collapse.
Prestressed stretch-draw is the critical process of prestress engineering.In present field of civil engineering, what tensioning construction generally adopted is the tensioning system that oil pump and jack form, main " the dual control method " that adopts tensile load control, stretch value to check roughly can be summarized as following key link: oil pressure gauge control load, manual operation oil pump; Invar tape is measured elongation, propagandas directed to communicate to keep synchronously; The manual record data are checked after the construction.There are many defectives in this traditional prestressing force drawing process, and more extensive such as the stretch-draw operation, loss of prestress is larger, is difficult to realize synchronous tension, can not in time scent a hidden danger etc.As seen, the prestress control precision of traditional stretch-draw is lower, the execution control difficulty is large, efficiency of construction is lower, is difficult to guarantee construction quality and the operation security of engineering, has become the key factor of restriction prestressed structure application and development.
Since late 1980s, some researchers have begun the research of strain-pull controlling of prestress problem, have carried out a large amount of research work from the research angle of automation, information-aided construction and the Digital Control angle of oil pump, in succession bear first fruit.The manual-automatic integrated tensioning system is integrated on the civil engineering product of prestressing technique, advanced manufacturing technology, information technology and intellectual technology and merges, the automation that has embodied prestressed Construction Technology with intelligent, become more meticulous and informationalized development trend.
Given this, the present invention is intended to explore a kind of manual-automatic integrated tensioning system, this manual-automatic integrated tensioning system not only can be realized the control of manual and automatic two kinds of patterns of stretching process, and can also accurately control prestressed off-load process, can guarantee that the prestressing force that finally obtains reaches designing requirement.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of manual-automatic integrated tensioning system, this manual-automatic integrated tensioning system not only can be realized the control of manual and automatic two kinds of patterns of stretching process, and can also accurately control prestressed off-load process, can guarantee that the prestressing force that finally obtains reaches designing requirement.
Realize above-mentioned technical purpose, manual-automatic integrated tensioning system of the present invention comprises the hydraulic jack jack, is used for driving the hydraulic system of hydraulic jack jack and being used for the control cabinet that control hydraulic jack jack moves;
Described hydraulic system comprises fuel tank, hydraulic pump, motor, frequency-changing control system and servo ratio control system, described frequency-changing control system comprises be used to controlling motor speed and making the converter plant of hydraulic jack jack rapid loading, described servo ratio control system comprises the servo proportion that is arranged between described hydraulic pump and the described hydraulic jack jack and is used for the loading of hydraulic jack jack precise fine-adjustment, be provided with hydraulic control one-way valve between described servo proportion and the hydraulic jack jack, be provided with off-load control bypass between described hydraulic control one-way valve and the described servo proportion, described off-load control bypass is provided with electromagnetic valve and controlled relief arrangement;
Also comprise hand-certainly change circuit, described fuel tank is provided with hand-control panel, and described hand-control panel is provided with button or the knob for the hand that switches manual mode-automatic mode-certainly change switch and be used for controlling described control valve group and motor;
Also comprise the sensor group, described sensor group comprises the displacement transducer that is arranged on the described hydraulic jack jack and is used for measuring hydraulic jack jack piston rod stroke, and is arranged between described hydraulic control one-way valve and the hydraulic jack jack or is arranged on the hydraulic jack jack and for detection of the pressure sensor of hydraulic jack jack pressure;
Be provided with central processing system and the executive control system that links to each other with central processing system in the control cabinet, be provided with for the control output unit of output control signal in the executive control system and be used for the data acquisition unit of pick-up transducers group survey data;
Also be provided with the communication module that links to each other with described executive control system in the described control cabinet, described communication module is provided with for other control cabinet group-net communications or be used for the access data network or be used for data line interface and/or the radio station of access Internet of Things.
Further, described controlled relief arrangement comprises throttling arrangement and the one way valve that is arranged in the described off-load control bypass, and described one way valve links to each other with described hydraulic pump.
Further, described controlled relief arrangement comprises the self-adjustable variable throttler, described self-adjustable variable throttler comprises valve body, be provided with pressure balance chamber in the described valve body and go out oil pocket, described pressure balance chamber and go out to be respectively equipped with on the oil pocket oil inlet P 1 and oil inlet P 2, describedly go out in the oil pocket to be provided with oil-out, be provided with spool in the described pressure balance chamber, described spool is provided with to extend and penetrates out oil pocket and cooperate the push rod that is used for adjusting the hydraulic fluid port flow with oil-out, is set with the spring that acts on spool and the pressure balance chamber wall on the described push rod.
Further, be provided with the overflow bypass between described hydraulic pump and the servo proportion, described overflow bypass is provided with overflow valve and is used for the radiator of hydraulic oil heat radiation in the fuel tank.
Further, described sensor group also comprises and being arranged on the described hydraulic system and for detection of the pressure sensor II of described hydraulic system working pressure, described pressure sensor II is arranged in the described off-load control bypass or is arranged between described servo proportion and the hydraulic control one-way valve.
Further, also be provided with the interface that the read-only storage that links to each other with central processing system and/or be used for is connected with mobile memory in the described control cabinet.
Further, also be provided with touch-screen, liquid crystal display and switch module for man-machine interaction on the described control cabinet.
Further, described fuel tank is provided with wiring hole, described control cabinet is provided with interface board, and described control output unit links to each other with the valve group of described hydraulic system with wiring hole by interface board, and described data acquisition unit links to each other with described sensor group with wiring hole by interface board.
Further, be equipped with shock-proof pressure gauge in described servo proportion oil-in and the off-load control bypass.
Further, also comprise go-cart, described go-cart is provided be used to the installation station that described fuel tank and described hydraulic jack jack are installed.
Further, described hand-certainly change circuit comprises conditioning and translation circuit, hand automatic switching circuit, drive circuit and relay group; Described conditioning and translation circuit reception are nursed one's health with conversion from the signal of executive control system and to this signal and are inputted automatic switching circuit in one's hands, described hand automatic switching circuit is after changing under the effect of described hand-certainly change switch, and being input to drive circuit, described drive circuit is connected with the relay group.
Beneficial effect of the present invention is:
1, manual-automatic integrated tensioning system of the present invention can be controlled the action of hydraulic jack jack automatically by control cabinet, by hand-certainly change circuit is set, and at fuel tank hand-control panel is set, can switch easily manual mode and automatic mode, be convenient to the Field Force initiatively gets involved prestressed stretch-draw according to actual conditions control, avoid the generation of emergency.
2, can control the oil-feed of hydraulic jack jack and fuel-displaced speed by servo proportion, can control in real time the hydraulic jack jack and export prestressed size, the prestressing force of hydraulic jack jack output is exported according to default prestressed stretch-draw curve.
3, by frequency-changing control system control motor speed is set, reach driving hydraulic pump output different flow and control unloaded hydraulic jack jack piston stretching speed, and power output size and the speed of hydraulic jack jack during loaded work piece, reach the purpose of rapid loading; The Hydraulic Station output flow of existing prestressing force pull system is generally 2-4L/min, be only applicable to centre-hole jack, when adopting the large tank jack, the problems such as its loading velocity is slow, oil return is slow will affect efficiency of construction, and manual-automatic integrated tensioning system of the present invention is by arranging converter plant control motor speed, can adapt to various types of cylinder jacks, applicability is wider, and can improve the efficient of the engineering constructions such as stretch-draw and jacking;
After the hydraulic jack jack relies on variable frequency control to reach the coarse adjustment stretching force value of setting, central processing unit will be coordinated frequency-changing control system control motor speed and private and take ratio control system and control the servo proportion openings of sizes and carry out vernier control, steadily Slow loading is to setting the stretching force value, and by the pressure loss that the self compensation of hydraulic jack jack pressure controls the inner fluid leakage of auto-compensation jack to bring, realize holding the lotus pressure stability and keep;
Be that manual-automatic integrated tensioning system of the present invention can be realized F.F. and fine setting and usefulness, adapt to the from big to small low pressure rapid loading of different stretch-draw piston area hydraulic jack jack, high pressure is accurately control slowly, guarantees system construction efficient and control accuracy; By variable frequency control and servo ratio control combination, when rapid loading loads with large flow, rely on frequency conversion to carry out coarse adjustment control and reach coarse adjustment pre set force value, and then finely tune accurately to reach by servo ratio control and set the stretching force value, system's heat waste is little, and energy-saving effect is remarkable.
Starter motor carried out repairing to the pressure loss above necessarily setting value later on when 4, lotus was held in the most employing of prior art, reveal with compensation fluid, but such process can cause the fluctuation of hydraulic system oil liquid, namely open motor when holding the lotus force value and compensate when being lower than, but be accurately to control to setting value after overcompensation, can under the pressure oscillation effect, surpass setting value; And manual-automatic integrated tensioning system of the present invention is being held the lotus stage by Sustainable Control control motor and servo proportion, can be because of opening and closing and the build-up of pressure fluctuation suddenly.
5, by off-load control bypass is set, by controlling controlled relief arrangement, can accurately control the unloding speed of hydraulic jack jack, make the hydraulic jack jack carry out off-load according to default unloading curve, prevent because the off-load of hydraulic jack jack is uncontrollable or off-load causes presstressed reinforcing steel to shrink long defective too soon, so that the prestressing force that finally is applied on the presstressed reinforcing steel reaches design load.
6, manual-automatic integrated tensioning system of the present invention is by arranging central processing system and executive control system two-level processing system, central processing system is used for the background process of non real-time control data and is used for linking to each other with parts such as the touch-screen of man-machine interaction and liquid crystal displays, executive control system is used for the valve group of real-time control hydraulic system and receives survey data from the sensor group, and control response is more quick and accurately; By sharing out the work and helping one another of central processing system and executive control system two-level processing system, can make prestressing force output procedure and the off-load process of controlling more fast, accurately the hydraulic jack jack, guarantee that the manual-automatic integrated tensioning system can carry out work according to the operating mode of default prestressing force curve of output and unloading curve regulation.
Description of drawings
Fig. 1 is the structural representation of manual-automatic integrated tensioning system embodiment of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is hydraulic system principle figure;
Fig. 4 is the first implementation structural representation of controlled relief arrangement;
Fig. 5 is the second implementation structural representation of controlled relief arrangement;
Fig. 6 is the control system theory diagram;
Fig. 7 is hand-from the theory diagram of translation interface;
Fig. 8 is the control principle block diagram of the present embodiment manual-automatic integrated tensioning system.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
As depicted in figs. 1 and 2, be the structural representation of manual-automatic integrated tensioning system embodiment of the present invention.The manual-automatic integrated tensioning system of the present embodiment, the control cabinet that comprises hydraulic jack jack 1, is used for driving the hydraulic system of hydraulic jack jack 1 action and is used for controlling 1 action of hydraulic jack jack.
As shown in Figure 3, hydraulic system comprises fuel tank 2, hydraulic pump 4, motor 3, frequency-changing control system and servo ratio control system, frequency-changing control system comprises for control motor 3 rotating speeds and makes the converter plant 26 of hydraulic jack jack 1 rapid loading, the servo ratio control system comprises the servo proportion 5 that is arranged between hydraulic pump 4 and the hydraulic jack jack 1 and is used for the loading of hydraulic jack jack 1 precise fine-adjustment, be provided with hydraulic control one-way valve 6 between servo proportion 5 and the hydraulic jack jack 1, be provided with off-load control bypass between hydraulic control one-way valve 6 and the servo proportion 5, off-load control bypass is provided with electromagnetic valve 7 and controlled relief arrangement 8.The hydraulic control one-way valve 6 of the present embodiment is arranged on the oil circuit between servo proportion 5 and hydraulic jack jack 1 rodless cavity, and the control piper of hydraulic control one-way valve 6 links to each other with hydraulic jack jack 1 rod chamber.
Can control 1 oil-feed of hydraulic jack jack and fuel-displaced speed by servo proportion 5, can control in real time the hydraulic jack jack and export prestressed size, the prestressing force of hydraulic jack jack 1 output is exported according to default prestressed stretch-draw curve.
By this controlled relief arrangement 8, can adapt to automatically the speed that the pressure size is regulated release, avoid the direct release of dependence electromagnetic valve of mentioning in traditional manual release mode and other documents or directly adopted the fixedly mode of damping hole release, automatically regulate the off-load velocity magnitude according to the large I of pressure, realize slow off-load and anchoring, reduce the effective prestress loss of anchoring stage.
The manual-automatic integrated tensioning system of the present embodiment also comprises hand-certainly change circuit, hand-certainly change circuit can be arranged in the fuel tank 2, also can be arranged in the control cabinet, the hand of the present embodiment-certainly change circuit to be arranged in the fuel tank 2, and fuel tank 2 is provided with hand-control panel 16, and hand-control panel 16 is provided with button or the knob for the hand that switches manual mode-automatic mode-certainly change switch and be used for controlling control valve group and motor 3.
As shown in Figure 7, be hand-certainly the change theory diagram of circuit, the hand of the present embodiment-certainly change circuit comprises conditioning and translation circuit, hand automatic switching circuit, drive circuit and relay group; Conditioning is nursed one's health with conversion from the signal of executive control system and to this signal with the translation circuit reception and is inputted automatic switching circuit in one's hands, the hand automatic switching circuit is after changing under the effect of described hand-certainly change switch, and being input to drive circuit, drive circuit is connected with the relay group.By hand-certainly change circuit is set, can conveniently carry out manual mode-automatic mode conversion according to actual conditions, control model is more flexible.By hand-certainly change circuit is set, and at fuel tank 2 hand-control panel 16 is set, can switches easily manual mode and automatic mode, be convenient to the Field Force initiatively gets involved prestressed stretch-draw according to actual conditions control, avoid the generation of emergency.
The manual-automatic integrated tensioning system of the present embodiment also comprises the sensor group, the sensor group comprises the displacement transducer that is arranged on the hydraulic jack jack 1 and is used for measuring hydraulic jack jack 1 piston rod stroke, and be arranged between hydraulic control one-way valve 6 and the hydraulic jack jack 1 or on the hydraulic jack jack 1 and for detection of the pressure sensor of hydraulic jack jack 1 pressure, the pressure sensor of the present embodiment is arranged on the hydraulic jack jack 1, by the sensor group is set, can carry out Real Time Monitoring to the operating mode of hydraulic jack jack 1.Preferably, the sensor group also comprises and being arranged on the hydraulic system and for detection of the pressure sensor II 9 of hydraulic system working pressure, pressure sensor II 9 is arranged in the off-load control bypass or is arranged between servo proportion 5 and the hydraulic control one-way valve 6, the pressure sensor II 9 of the present embodiment is arranged in the off-load control bypass, and between electromagnetic valve 7 and hydraulic control one-way valve 6.
As shown in Figure 6, be provided with central processing system and the executive control system that links to each other with central processing system in the control cabinet, be provided with for the control output unit of output control signal in the executive control system and be used for the data acquisition unit of pick-up transducers group survey data.The control output unit links to each other with servo proportion 5, electromagnetic valve 7 and controlled relief arrangement 8, realizes the real-time control to servo proportion 5, electromagnetic valve 7 and controlled relief arrangement 8 operating modes; Data acquisition unit links to each other with displacement transducer, pressure sensor and pressure sensor II 9, the hydraulic jack jack 1 piston rod telescopic displacement that can Real-time Collection be measured by displacement sensor, hydraulic jack jack 1 operating pressure that is measured by pressure sensor and the hydraulic system working pressure that is measured by pressure sensor II 9, and carry out data feedback to executive control system, and by the operating mode of executive control system control control valve group and motor 3.Preferably, the central processing system of the present embodiment adopts central processing unit.
Also be provided with the communication module that links to each other with executive control system in the control cabinet of the present embodiment, communication module is provided with for other control cabinet group-net communications or be used for the access data network or be used for data line interface and/or the radio station of access Internet of Things, be provided with simultaneously data line interface and radio station on the communication module of the present embodiment, can carry out wired and radio communication with other communication equipments simultaneously, conveniently carry out transfer of data.Preferably, also be provided with touch-screen, liquid crystal display and switch module for man-machine interaction on the control cabinet, operating personnel can carry out Real Time Observation and in real time control to stretching process by touch-screen and liquid crystal display.Preferably, the interface that also is provided with the read-only storage that links to each other with central processing system in the control cabinet and/or is used for being connected with mobile memory, be provided with simultaneously read-only storage and the interface that is connected being connected with mobile memory in the control cabinet of the present embodiment, the data that are used for storage prestressed stretch-draw process by read-only storage is set, and link to each other with mobile memory by interface, the data that are stored in the read-only storage are backed up.
Manual-automatic integrated tensioning system of the present invention is by arranging central processing system and executive control system two-level processing system, central processing system is used for the background process of non real-time control data and is used for linking to each other with parts such as the touch-screen of man-machine interaction and liquid crystal displays, executive control system is used for the valve group of real-time control hydraulic system and receives survey data from the sensor group, and control response is more quick and accurately; By sharing out the work and helping one another of central processing system and executive control system two-level processing system, can make prestressing force output procedure and the off-load process of controlling more fast, accurately the hydraulic jack jack, guarantee that the manual-automatic integrated tensioning system can carry out work according to the operating mode of default prestressing force curve of output and unloading curve regulation.
The manual-automatic integrated automatic Tensioning system of the present embodiment is by arranging frequency-changing control system control motor 3 rotating speeds, reach driving hydraulic pump 4 output different flows and control unloaded hydraulic jack jack 1 piston stretching speed, and power output size and the speed of hydraulic jack jack 1 during loaded work piece, reach the purpose of rapid loading.The Hydraulic Station output flow of existing prestressing force pull system is generally 2-4L/min, be only applicable to centre-hole jack, when adopting the large tank jack, the problems such as its loading velocity is slow, oil return is slow will affect efficiency of construction, and the manual-automatic integrated tensioning system of the present embodiment is by arranging converter plant control motor 3 rotating speeds, can adapt to various types of cylinder jacks 1, applicability is wider, and can improve the efficient of the engineering constructions such as stretch-draw and jacking.
After hydraulic jack jack 1 relies on variable frequency control to reach the coarse adjustment stretching force value of setting, central processing unit will be coordinated frequency-changing control system control motor speed and private and take ratio control system and control the servo proportion openings of sizes and carry out vernier control, steadily Slow loading is to setting the stretching force value, and by the pressure loss that the self compensation of hydraulic jack jack pressure controls the inner fluid leakage of auto-compensation jack to bring, realize holding the lotus pressure stability and keep.
The manual-automatic integrated tensioning system that is the present embodiment can be realized F.F. and fine setting and usefulness, adapts to the from big to small low pressure rapid loading of different stretch-draw piston area hydraulic jack jack, and high pressure is accurately control slowly, guarantees system construction efficient and control accuracy; By variable frequency control and servo ratio control combination, when rapid loading loads with large flow, rely on frequency conversion to carry out coarse adjustment control and reach coarse adjustment pre set force value, and then finely tune accurately to reach by servo ratio control and set the stretching force value, system's heat waste is little, and energy-saving effect is remarkable.
Starter motor 3 carried out repairing to the pressure loss above necessarily setting value later on when lotus was held in the most employing of prior art, reveal with compensation fluid, but such process can cause the fluctuation of hydraulic system oil liquid, namely open motor when holding the lotus force value and compensate when being lower than, but be accurately to control to setting value after overcompensation, can under the pressure oscillation effect, surpass setting value; And the manual-automatic integrated tensioning system of the present embodiment is being held the lotus stage by Sustainable Control control motor 3 and servo proportion 5, can be because of opening and closing and the build-up of pressure fluctuation suddenly.
Controlled relief arrangement 8 can adopt implemented in many forms, and is as follows:
As shown in Figure 4, the first implementation for controlled relief arrangement 8, this controlled relief arrangement comprises the self-adjustable variable throttler, the self-adjustable variable throttler comprises valve body 17, be provided with pressure balance chamber 18 in the valve body 17 and go out oil pocket 19, pressure balance chamber 18 and go out to be respectively equipped with oil inlet P 1 and oil inlet P 2 on the oil pocket 19, go out and be provided with oil-out 20 in the oil pocket 19, be provided with spool 21 in the pressure balance chamber 18, spool 21 is provided with to extend and penetrates out oil pocket 19 and cooperate the push rod 22 that is used for adjusting the hydraulic fluid port flow with oil-out 20, is set with the spring 23 that acts on spool 21 and the pressure balance chamber wall on the push rod 22.
Off-load is carried out in the common employing of existing relief arrangement fixedly damping hole, but fixedly the damping restriction choke can't be adjusted off-load speed, if adopt too small damping hole for slowing down off-load speed simultaneously, easily stops up damping hole, and the equipment that affects normally uses.This self-adjustable variable throttler is by passing into the pressure oil of uniform pressure in oil inlet P 1 and oil inlet P 2, pressure oil acts on the spool 21 through oil inlet P 1, pressure balance chamber 18 relies on spring 23 to come balance with the differential pressure action force that spendes oil pocket 19, and then the size by push rod 22 control oil-outs 20, oil-out 20 is bell, the push rod front end is provided with the pyramidal structure that cooperates with oil-out 20, the size of control bell can be controlled the liquid resistance of release annulus, make the pressure decreased of the pressure oil that enters from oil inlet P 2, reach the effect of automatic control pressure unloading speed, realization is slow off-load when high pressure, off-load function rapidly during low pressure.
By this controlled relief arrangement 8, can adapt to automatically the speed that the pressure size is regulated release, avoid the direct release of dependence electromagnetic valve of mentioning in traditional manual release mode and other documents or directly adopted the fixedly mode of damping hole release, automatically regulate the off-load velocity magnitude according to the large I of pressure, realize slow off-load and anchoring, reduce the effective prestress loss of anchoring stage.
As shown in Figure 5, be the second implementation of controlled relief arrangement 8, this controlled relief arrangement 8 comprises throttling arrangement 24 and the one way valve 25 that is arranged in the off-load control bypass, and one way valve 25 links to each other with hydraulic pump 4.Throttling arrangement 24 and the one way valve 25 of the present embodiment become one, be communicated with servo proportion 5 oil circuits by oil circuit in the integrated valve block, when carrying out off-load, pressure is got back to fuel tank by throttling arrangement 24 and one way valve 25, can realize slow off-load, and can carry out off-load speed adjustment control to different tonnage jack by adjusting different Restriction Parameters, reach the purpose of off-load control.
The controlled relief arrangement 8 of the present embodiment adopts the first implementation, be that controlled relief arrangement 8 adopts, the self-adjustable variable throttler is got back to fuel tank 2 through the pressure oil of self-adjustable variable throttler off-load through high-voltage electromagnetic ball valve, can adapt to automatically the speed that the pressure size is regulated release.
Preferred version as the present embodiment, be provided with the overflow bypass between hydraulic pump 4 and the servo proportion 5, the overflow bypass is provided with overflow valve 10 and is used for the radiator 11 of fuel tank 2 interior hydraulic oil heat radiations, can prevent analysis of hydraulic oil overheat in the fuel tank 2 by radiator 11 is set.
Preferred version as the present embodiment, fuel tank 2 is provided with wiring hole 12, control cabinet is provided with interface board, the control output unit links to each other with the valve group of hydraulic system with wiring hole 12 by interface board, data acquisition unit links to each other with the sensor group with wiring hole 12 by interface board, connects convenient reliable.Preferably, be respectively equipped with shock-proof pressure gauge 13 and shock-proof pressure gauge 14 in servo proportion 5 oil-ins and the off-load control bypass, the dial plate of shock-proof pressure gauge 13 and shock-proof pressure gauge 14 is installed on the hand-control panel 16, conveniently at the construction field (site) stretching process is observed and is monitored.
The manual-automatic integrated tensioning system of the present embodiment also comprises go-cart 15, and go-cart 15 is provided with for the installation station that fuel tank 2 and hydraulic jack jack 1 are installed, and by go-cart 15 is set, can make things convenient for mobile fuel tank 2 and hydraulic jack jack 1.
As shown in Figure 8, for the manual-automatic integrated tensioning system of the present embodiment, its executive control system is by control valve group and the converter plant output control signal of control output unit to executing agency, the control valve group comprises servo proportion 5, electromagnetic valve 7 and controlled relief arrangement 8, in the executing agency by displacement transducer, the sensor group that pressure sensor and pressure sensor II 9 form is to the floor data of the data acquisition unit feedback valve group of executive control system, the real-time control output that executive control system is made next step according to floor data is judged, the control output unit outputs a control signal to the valve group of executing agency, so forms a close loop control circuit.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (11)
1. a manual-automatic integrated tensioning system is characterized in that: comprise the hydraulic jack jack, be used for driving the hydraulic system of hydraulic jack jack and being used for the control cabinet that control hydraulic jack jack moves;
Described hydraulic system comprises fuel tank, hydraulic pump, motor, frequency-changing control system and servo ratio control system, described frequency-changing control system comprises be used to controlling motor speed and making the converter plant of hydraulic jack jack rapid loading, described servo ratio control system comprises the servo proportion that is arranged between described hydraulic pump and the described hydraulic jack jack and is used for the loading of hydraulic jack jack precise fine-adjustment, be provided with hydraulic control one-way valve between described servo proportion and the hydraulic jack jack, be provided with off-load control bypass between described hydraulic control one-way valve and the described servo proportion, described off-load control bypass is provided with electromagnetic valve and controlled relief arrangement;
Also comprise hand-certainly change circuit, described fuel tank is provided with hand-control panel, and described hand-control panel is provided with button or the knob for the hand that switches manual mode-automatic mode-certainly change switch and be used for controlling described control valve group and motor;
Also comprise the sensor group, described sensor group comprises the displacement transducer that is arranged on the described hydraulic jack jack and is used for measuring hydraulic jack jack piston rod stroke, and is arranged between described hydraulic control one-way valve and the hydraulic jack jack or is arranged on the hydraulic jack jack and for detection of the pressure sensor of hydraulic jack jack pressure;
Be provided with central processing system and the executive control system that links to each other with central processing system in the control cabinet, be provided with for the control output unit of output control signal in the executive control system and be used for the data acquisition unit of pick-up transducers group survey data;
Also be provided with the communication module that links to each other with described executive control system in the described control cabinet, described communication module is provided with for other control cabinet group-net communications or be used for the access data network or be used for data line interface and/or the radio station of access Internet of Things.
2. manual-automatic integrated tensioning system according to claim 1 is characterized in that: described controlled relief arrangement comprises throttling arrangement and the one way valve that is arranged in the described off-load control bypass, and described one way valve links to each other with described hydraulic pump.
3. manual-automatic integrated tensioning system according to claim 1, it is characterized in that: described controlled relief arrangement comprises the self-adjustable variable throttler, described self-adjustable variable throttler comprises valve body, be provided with pressure balance chamber in the described valve body and go out oil pocket, described pressure balance chamber and go out to be respectively equipped with on the oil pocket oil inlet P 1 and oil inlet P 2, describedly go out in the oil pocket to be provided with oil-out, be provided with spool in the described pressure balance chamber, described spool is provided with to extend and penetrates out oil pocket and cooperate the push rod that is used for adjusting the hydraulic fluid port flow with oil-out, is set with the spring that acts on spool and the pressure balance chamber wall on the described push rod.
4. each described manual-automatic integrated tensioning system according to claim 1, it is characterized in that: be provided with the overflow bypass between described hydraulic pump and the servo proportion, described overflow bypass is provided with overflow valve and is used for the radiator of hydraulic oil heat radiation in the fuel tank.
5. manual-automatic integrated tensioning system according to claim 1, it is characterized in that: described sensor group also comprises and being arranged on the described hydraulic system and for detection of the pressure sensor II of described hydraulic system working pressure, described pressure sensor II is arranged in the described off-load control bypass or is arranged between described servo proportion and the hydraulic control one-way valve.
6. each described manual-automatic integrated tensioning system is characterized in that: the interface that also is provided with the read-only storage that links to each other with central processing system in the described control cabinet and/or is used for being connected with mobile memory according to claim 1-5.
7. manual-automatic integrated tensioning system according to claim 6 is characterized in that: also be provided with touch-screen, liquid crystal display and switch module for man-machine interaction on the described control cabinet.
8. manual-automatic integrated tensioning system according to claim 7, it is characterized in that: described fuel tank is provided with wiring hole, described control cabinet is provided with interface board, described control output unit links to each other with the valve group of described hydraulic system with wiring hole by interface board, and described data acquisition unit links to each other with described sensor group with wiring hole by interface board.
9. manual-automatic integrated tensioning system according to claim 1 is characterized in that: be equipped with shock-proof pressure gauge in described servo proportion oil-in and the off-load control bypass.
10. manual-automatic integrated tensioning system according to claim 1, it is characterized in that: also comprise go-cart, described go-cart is provided be used to the installation station that described fuel tank and described hydraulic jack jack are installed.
11. manual-automatic integrated tensioning system according to claim 1 is characterized in that: described hand-certainly change circuit comprises conditioning and translation circuit, hand automatic switching circuit, drive circuit and relay group; Described conditioning and translation circuit reception are nursed one's health with conversion from the signal of executive control system and to this signal and are inputted automatic switching circuit in one's hands, described hand automatic switching circuit is after changing under the effect of described hand-certainly change switch, and being input to drive circuit, described drive circuit is connected with the relay group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372218.0A CN102953550B (en) | 2012-09-29 | 2012-09-29 | Manual-automatic integrated tensioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372218.0A CN102953550B (en) | 2012-09-29 | 2012-09-29 | Manual-automatic integrated tensioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953550A true CN102953550A (en) | 2013-03-06 |
| CN102953550B CN102953550B (en) | 2014-12-10 |
Family
ID=47762886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210372218.0A Expired - Fee Related CN102953550B (en) | 2012-09-29 | 2012-09-29 | Manual-automatic integrated tensioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102953550B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629173A (en) * | 2013-11-28 | 2014-03-12 | 湖南联智桥隧技术有限公司 | Prestress tension hydraulic system, prestress tension device and control method of prestress tension device |
| CN106284090A (en) * | 2016-08-31 | 2017-01-04 | 中国冶集团有限公司 | Prestressed stretch-draw chassis |
| CN111288030A (en) * | 2020-03-31 | 2020-06-16 | 扬州翊翔航空科技有限公司 | Distributed damping supporting device of automobile range extender and control method thereof |
| CN113790182A (en) * | 2021-09-22 | 2021-12-14 | 湖南星邦智能装备股份有限公司 | Cantilever crane self-weight retraction control system and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347357A (en) * | 1993-06-03 | 1994-12-22 | Nippon Concrete Ind Co Ltd | Hydraulic tensioning apparatus |
| CN201181418Y (en) * | 2008-04-22 | 2009-01-14 | 中国水利水电第七工程局成都水电建设工程有限公司 | Anchor cable stretching automatic monitoring system |
| CN101476574A (en) * | 2009-01-16 | 2009-07-08 | 福州恒拓工业自动化有限公司 | Automatic control mechanism for combined valve of reinforced bar stretching machine hydraulic equipment |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
| CN202227706U (en) * | 2011-09-16 | 2012-05-23 | 柳州市建桥预应力机械厂 | Automatic tensioning control system |
-
2012
- 2012-09-29 CN CN201210372218.0A patent/CN102953550B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06347357A (en) * | 1993-06-03 | 1994-12-22 | Nippon Concrete Ind Co Ltd | Hydraulic tensioning apparatus |
| CN201181418Y (en) * | 2008-04-22 | 2009-01-14 | 中国水利水电第七工程局成都水电建设工程有限公司 | Anchor cable stretching automatic monitoring system |
| CN101476574A (en) * | 2009-01-16 | 2009-07-08 | 福州恒拓工业自动化有限公司 | Automatic control mechanism for combined valve of reinforced bar stretching machine hydraulic equipment |
| CN101989091A (en) * | 2009-07-31 | 2011-03-23 | 中国建筑第八工程局有限公司 | Prestress automatic tensioning control system and method |
| CN202227706U (en) * | 2011-09-16 | 2012-05-23 | 柳州市建桥预应力机械厂 | Automatic tensioning control system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629173A (en) * | 2013-11-28 | 2014-03-12 | 湖南联智桥隧技术有限公司 | Prestress tension hydraulic system, prestress tension device and control method of prestress tension device |
| CN103629173B (en) * | 2013-11-28 | 2015-12-02 | 湖南联智桥隧技术有限公司 | Prestressed stretch-draw hydraulic system, prestress tensioning equipment and controlling method thereof |
| CN106284090A (en) * | 2016-08-31 | 2017-01-04 | 中国冶集团有限公司 | Prestressed stretch-draw chassis |
| CN106284090B (en) * | 2016-08-31 | 2018-01-19 | 中国一冶集团有限公司 | Prestressed stretch-draw chassis |
| CN111288030A (en) * | 2020-03-31 | 2020-06-16 | 扬州翊翔航空科技有限公司 | Distributed damping supporting device of automobile range extender and control method thereof |
| CN113790182A (en) * | 2021-09-22 | 2021-12-14 | 湖南星邦智能装备股份有限公司 | Cantilever crane self-weight retraction control system and control method |
| CN113790182B (en) * | 2021-09-22 | 2024-04-19 | 湖南星邦智能装备股份有限公司 | Arm support dead weight retraction control system and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102953550B (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202718397U (en) | Prestress automatic tensioning system | |
| CN102953550B (en) | Manual-automatic integrated tensioning system | |
| CN103569882B (en) | Hydraulic jacking system of attached tower crane | |
| CN103383327A (en) | Large bidirectional dynamic/static direct-shearing machine for coarse-grained soil contact interface tests | |
| CN204512069U (en) | The test bed hydraulic control system of energy saving excavator oil hydraulic cylinder | |
| CN102886917B (en) | Hydraulic servo control system for efficiently improving pressing precision of powder-forming hydraulic machine | |
| CN105351293B (en) | A kind of energy-recuperation system of passive volume synchronization system | |
| CN109026860A (en) | Proportional servo valve control hydraulic prop platform column cylinder system and compress control method | |
| CN105240350A (en) | Large multifunctional rock-soil structure model test platform multi-point servo loading system | |
| CN202645038U (en) | Control system for building jacking construction | |
| CN101726440B (en) | CNC pressurizing system for model test and control method thereof | |
| CN204113783U (en) | A kind of for the hydraulic pressure synchronous drive device in nuclear fusion device | |
| CN106895034B (en) | A kind of asynchronous circulation jack-up system of Large Construction platform multi-hydraulic-cylinder elementary errors | |
| CN202298466U (en) | Synchronous jacking control device | |
| CN203614479U (en) | Tundish lifting hydraulic device with high synchronization accuracy | |
| CN103047202B (en) | The hydraulic system of synthesis experiment platform | |
| CN103807236B (en) | Valve control unit loads mouth independently controls multi-cylinder assignment of traffic hydraulic system | |
| CN102888996B (en) | Based on the pre-stress construction system of Internet of Things | |
| CN202657870U (en) | Telescopic arm hydraulic system, crane jib system and crane | |
| CN205025865U (en) | Servo loading system of large -scale multi -functional ground structural model test platform multiple spot | |
| CN203926173U (en) | Hoist fine motion control system | |
| CN203049433U (en) | Hydraulic system for tail gate mechanism of road surface milling machine | |
| CN210738516U (en) | Monitoring protection device of ground blowout preventer control device | |
| CN203809400U (en) | Controlling hydraulic system for spreading machine ironing plate | |
| CN203470892U (en) | Stopper rod hydraulic control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20210929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |