CN102444290B - Automatic tension control system and method thereof - Google Patents
Automatic tension control system and method thereof Download PDFInfo
- Publication number
- CN102444290B CN102444290B CN 201110275482 CN201110275482A CN102444290B CN 102444290 B CN102444290 B CN 102444290B CN 201110275482 CN201110275482 CN 201110275482 CN 201110275482 A CN201110275482 A CN 201110275482A CN 102444290 B CN102444290 B CN 102444290B
- Authority
- CN
- China
- Prior art keywords
- hydraulic jack
- control system
- motor
- stretch
- automatically
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to an automatic tension control system and a method thereof, relating to a system and a method for applying pre-stress on a pre-stressed component in civil engineering. The system comprises an electric oil pump, a hydraulic jack, a controller of the automatic tension control system, a data relay controller and a computer. A pull rod type displacement sensor and a pressure sensor are arranged on the hydraulic jack. Control valve rods of left and right control valves of the electric oil pump are connected with a stepping motor. The controller of the automatic tension control system comprises a MCU (Micro-programmed Control Unit) single chip microcomputer, functional keystrokes, a displacement collection unit, a pressure collection unit, a buzzing and alarming unit, a display unit, a driving module, a motor steering output unit, a motor steering and stopping output unit and a motor pulse output unit. The method comprises the steps of tensioning, unloading and the like. According to the system and the method disclosed by the invention, the tension precision can be increased; the tension uncontrolled accident of the pre-stressed reinforcing steel can be effectively avoided; the system and the method have the characteristics of being simple in structure, low in cost, safe, reliable, low in quality monitoring difficulty, simple in method and convenient for operation; and the system and the method are applied to various fields.
Description
Technical field
The present invention relates to a kind ofly in civil engineering, prestressed member be applied prestressed system and method, particularly a kind of automatic stretch-draw control system and method thereof.
Background technology
At present, in civil engineering, prestressed member is applied prestressed traditional prestressing force pull system generally comprise oil pump and hydraulic jack, this system is when construction, the stretching force that hydraulic jack applies is to control by the oil pressure gauge that the constructor observes on the oil pump, the elongation value of stretching of presstressed reinforcing steel then is by manually measuring with ruler, there is following shortcoming in this prestressing force pull system: 1, because the human factor influence is bigger, certainty of measurement is lower, and measurement result exists bigger error bigger; 2, the pressure gauge reading instability is difficult to pin-point reading, and rate of reading is slow, need be converted by pressure gauge reading and just can know the size of stretching force, can not form the intuitive concept of stretching force, to control stretch-draw inconvenience; 3, when stretch-draw, take place to cause prestressed stretch-draw accident out of control because of human factor through regular meeting, more dangerous; 4, quality monitoring difficulty inner at prestressed member or during than the operation of some more hidden places is bigger; 5, need manpower bigger, quality-control cost is higher.Continuous development along with prestressing technique, also there are many people to propose to adopt automatic tensioning system to solve the problems referred to above, but the structure more complicated of these automatic tensioning systems, cost is higher, but also can not reach real automatic stretch-draw control, thereby also do not obtain real popularizing.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of automatic stretch-draw control system and method thereof are provided, and above-mentioned stretch-draw precision is low to solve, dangerous, big, the baroque problem of quality monitoring difficulty of construction.
The technical scheme that solves the problems of the technologies described above is: a kind of automatic stretch-draw control system, comprise electric oil pump, by the hydraulic jack of electric oil pump control, described automatic stretch-draw control system also includes automatic stretch-draw control system controller, data window machine controller and computer, also be equipped with on the described hydraulic jack and can be separately installed with pressure sensor on the inlet nozzle of hydraulic jack and the oil return nozzle with the rod-pulling type displacement transducer of piston rod movement; The control valve rod of described electric oil pump left and right sides control valve is connected with stepper motor by the stepper motor connector; Described automatic stretch-draw control system controller comprises that MCU single-chip microcomputer, function button, displacement acquisition unit, pressure acquisition unit, buzzing and alarm unit, display unit, driver module, motor steering output unit, motor change stopping transportation and go out unit, motor pulses output unit; Described MCU input of single chip is connected with function button, displacement acquisition unit, pressure acquisition unit respectively, the displacement acquisition unit is connected with the rod-pulling type displacement transducer of hydraulic jack, and pressure acquisition unit is connected with pressure sensor on hydraulic jack inlet nozzle, the oil return nozzle; Described MCU single machine output end is connected with buzzing and alarm unit, display unit, driver module respectively, driver module goes out the unit with motor steering output unit, motor commentaries on classics stopping transportation respectively, the motor pulses output unit is connected, and described motor steering output unit is connected with the stepper motor of electric oil pump respectively with the motor pulses output unit; Motor commentaries on classics stopping transportation goes out the unit and is connected with relay K, relay K is connected with the main relay of control electric oil pump master machine operation again, described data window machine controller comprises power supply and the transmission signal TCU transfer control unit that is connected with this power supply, the input of this transmission signal TCU transfer control unit is connected by the driver module output of signal-transmitting cable with automatic stretch-draw control system controller, and the output of transmission signal TCU transfer control unit is connected with the input of computer.
Further technical scheme of the present invention is: described rod-pulling type displacement transducer is fixedly mounted on the hydraulic jack oil cylinder cylindrical, the piston external part of described hydraulic jack is installed with the U-shaped junction plate that cylindrical has U-lag, being equipped with in the U-lag of U-shaped junction plate can be along the guide plate of U-lag slip, and the drag link end of this guide plate and rod-pulling type displacement transducer links together by nut.
Further technical scheme more of the present invention is: also be installed with the piston anti-rotating device on the oil cylinder cylindrical of described hydraulic jack, this piston anti-rotating device comprises anti-rotaring sleeve and anti-rotation pull bar, described anti-rotation pull bar is positioned at anti-rotaring sleeve, and anti-rotation pull bar one end stretches out outside the anti-rotaring sleeve and by nut and is connected with guide plate.
Further technical scheme of the present invention is: described stepper motor comprises No. 1 stepper motor, No. 2 stepper motors, No. 3 stepper motors, No. 4 stepper motors, described stepper motor connector comprises towards opposite adpting flange A and adpting flange B, the central shaft hole of described adpting flange A and the output shaft of stepper motor are connected, and by passing the trip bolt locking of stepper motor output shaft and adpting flange A; The control valve rod of the central shaft hole of described adpting flange B and electric oil pump left and right sides control valve is connected, and by passing the trip bolt locking of control valve rod and adpting flange B; Described adpting flange A and adpting flange B link together by connecting pin.
Another technical scheme of the present invention is: a kind of automatic stretching control method, and this method may further comprise the steps:
Sep1, startup computer and automatic stretch-draw control system controller, stretch-draw control system controller sends signal to four stepper motors automatically, and four stepper motors all reverse, and stop automatically when forwarding in the time of can not rotating;
Sep2, automatically stretch-draw control system controller sends closure signal to relay K, and relay K is connected, and relay K is controlled the main relay of main motor, this moment main electrical power, electric oil pump is started working;
Sep 3, the pressure sensor energising that is positioned on hydraulic jack oil-feed, the oil return nozzle are started working, and zero setting;
Sep 4, automatic stretch-draw control system controller send to No. 2 stepper motors and clockwise rotate signal, and No. 2 stepper motors clockwise rotate up to not changeing when ending and stop automatically; After No. 2 stepper motor quit work, No. 1 stepper motor began to clockwise rotate the control control valve to the hydraulic jack fuel feeding, promotes the piston motion, and hydraulic jack is started working;
Sep 5, the pressure sensor that is installed on hydraulic jack inlet nozzle and the oil return nozzle begin detected pressures, and transfer signals in the automatic stretch-draw control system controller, automatically stretch-draw control system controller is handled signal by the data window machine controller and is transferred to computer, on computer screen, show operating pressure, backhaul pressure in real time, and by being installed in the automatic evaluation work stretching force of stretching force design formulas of the software generation in the computer;
Being with the rod-pulling type displacement to pass device after Sep 6, the motion of hydraulic jack piston moves, the rod-pulling type displacement transducer exports signal to automatic stretch-draw control system controller, automatically stretch-draw control system controller is handled signal by the data window machine controller and is transferred to computer, shows displacement on the screen of computer in real time;
Sep 7, input working parameter on computers, stretch-draw control system controller receives and is the hydraulic jack pressurization by the running parameter control step motor of input automatically, makes hydraulic jack finish stretching process;
Sep 8, after finishing stretching process, enter the off-load process;
Sep 9, rod-pulling type displacement transducer make zero, and namely finish the single tension process.
Further technical scheme more of the present invention is: in step Sep 7, the described running parameter of input on computers is predefined serial oil pressure parameter value; Described automatic stretch-draw control system controller is the hydraulic jack pressurization by the running parameter control step motor of input, it is as follows to make hydraulic jack finish the particular content of stretch-draw work: No. 1 stepper motor of stretch-draw control system controller control clockwise rotates automatically, when the detected oil pressure of the pressure sensor that is positioned at the hydraulic jack oil-in reaches predefined minimum oil pressure parameter value, No. 1 stepper motor stops operating automatically, and the time of maintenance setting, record the displacement of this moment on the computer automatically; No. 1 stepper motor begins again to clockwise rotate then, when the pressure sensor that is positioned at the hydraulic jack oil-in detects oil pressure and reaches predefined next oil pressure parameter value, No. 1 stepper motor stops operating again automatically, and the time of maintenance setting, record the displacement of this moment on the computer automatically; No. 1 stepper motor carries out work according to this, reaches predefined maximum oil pressure parameter value until oil pressure, and keeps the time of setting, and at this moment, the hydraulic pressure hydraulic jack is finished stretching process.
Further technical scheme of the present invention is: in step Sep 8, described to enter off-load process particular content as follows: No. 1, No. 2 stepper motor rotates counterclockwise and forwards in the time of can not rotating and stops automatically; After No. 1, No. 2 stepper motor stopped, No. 3 stepper motors began to clockwise rotate up to forwarding in the time of can not rotating and stop automatically; When No. 3 stepper motor stopped, No. 4 stepper motor began to clockwise rotate, and stops operating automatically in the time of till can not rotating; The pressure sensor that is positioned at the hydraulic jack oil return opening detects backhaul pressure and is presented on the screen of computer, and when backhaul pressure during greater than 25MPa, red eye begins glittering, and No. 4 stepper motor stops automatically; Whether the rod-pulling type displacement transducer detects and makes zero in this process, as makes zero, and No. 4 stepper motor stops automatically; Namely be that pressure sensor and the rod-pulling type displacement transducer that is positioned at the hydraulic jack oil return opening detects simultaneously, which reaches the condition of setting earlier, and which just sends the signal that stops to No. 4 stepper motors; No. 4 stepper motor stops operating, and finishes the off-load process.
Because adopt technique scheme, the present invention's automatic stretch-draw control system and method thereof compared with prior art have following beneficial effect:
1, can increase substantially the stretch-draw precision:
Because the present invention is except comprising electric oil pump, hydraulic jack, also include automatic stretch-draw control system controller, data window machine controller and computer, and pressure sensor and displacement transducer be installed also on hydraulic jack, also on the basis of existing electric oil pump, the control valve rod of left and right sides control valve is controlled oil-feed and oil return and oil pressure automatically by manually changing four stepper motors into.The present invention can replace existing personal monitoring fully by pressure sensor and displacement transducer and the cooperation of stretch-draw control system controller automatically, and its monitoring velocity is very fast; Man-machine interface by computer, not only can realize the remote visualization operation, the oil pressure value of the present invention when stretch-draw, the elongation value of stretching of presstressed reinforcing steel can be recorded on computers automatically and accurately, the automatic evaluation work stretching force of stretching force design formulas that computer generates by the software that is installed in advance in the computer again, really reached the purpose of full-automatic stretch-draw control, thereby avoided human factor to cause the big problem of measure error, significantly improve prestressed stretch-draw precision.
In addition, because pressure sensor of the present invention is mounted on the inlet nozzle and oil return nozzle of hydraulic jack, it is away from oil pump master motor, avoided producing electromagnetic interference because of main machine operation, guarantee the accuracy of pressure sensor image data, thereby further improved prestressed stretch-draw precision.
2, can avoid tension of prestressed tendon accident out of control effectively:
Each sensor signal of the present invention can be controlled the duty of hydraulic jack automatically by automatic stretch-draw control system controller, can when reaching control stress for prestressing or exceed the control range of Extension Values of Prestress Reinforcements, stop stretch-draw automatically, thereby the tension of prestressed tendon accident out of control that can avoid human factor to cause effectively is more safe and reliable.
3, quality monitoring difficulty is little:
Because the present invention can realize full-automatic stretch-draw control, and automatic stretch-draw control system controller of the present invention receives and handles by the signal that the communications cable is sent, data are packed send out and transfer data to the data window machine controller, again data transfer signal is changed by the data window machine controller, make and have strong interference immunity in the data transmission procedure, long transmission distance, reach about 1 kilometer, can satisfy far distance controlled, its quality monitoring difficulty is little, therefore, the present invention can be suitable in the operation of various places, particularly is suitable in prestressed member inside or than some more hidden place operations.
4, simple in structure, cost is low:
This automatic stretch-draw control system only comprises electric oil pump, hydraulic jack, automatic stretch-draw control system controller, data window machine controller and computer, and it is relatively simple for structure, need not other complicated huge control system, and cost is lower.Because the present invention can realize full-automatic stretch-draw control, also can significantly reduce the constructor, to reduce its quality-control cost in addition.
5, rational in infrastructure reliable:
Because rod-pulling type displacement transducer of the present invention is to be connected with guide plate by nut with the piston anti-rotating device, its guide plate is installed in the U-shaped junction plate that is fixed on the piston, driving guide plate when piston moves moves together, guide plate can slide in the U-lag of U-shaped junction plate, thereby damages displacement transducer can avoid piston rotation the time; Therefore, structure of the present invention is relatively rationally reliable.
6, method is simple, and is easy to operate:
Because the present invention can realize full-automatic stretch-draw control, its control method is very simple, and operation is very easy.
Below, in conjunction with the accompanying drawings and embodiments the present invention's automatic stretch-draw control system and the technical characterictic of method thereof are further described.
The structural representation of Fig. 1: embodiment one described the present invention's automatic stretch-draw control system;
Fig. 2: the theory diagram of automatic stretch-draw control system master controller, data window machine controller;
Fig. 3～Fig. 4: the annexation schematic diagram between position rod-type displacement transducer and the hydraulic jack,
Fig. 3: front view, the vertical view of Fig. 4: Fig. 3;
Fig. 5: the annexation schematic diagram between stepper motor and the electric oil pump control valve rod;
The structural representation of Fig. 6: embodiment two described the present invention's automatic stretch-draw control system;
The FB(flow block) of Fig. 7: embodiment three described the present invention's automatic stretching control method.
In above-mentioned accompanying drawing, the label of each part is as follows:
The 1-electric oil pump, the 101-stepper motor, the 1011-1 stepper motor, the 1012-2 stepper motor,
The 1013-3 stepper motor, the 1014-4 stepper motor, 102-master's motor, the 103-main relay,
The 104-relay K, the 105-trip bolt, 106-adpting flange A, the 107-connecting pin,
108-adpting flange B, 109-controls valve rod, the 2-hydraulic jack,
201-rod-pulling type displacement transducer, the 202-pressure sensor, the 203-guide plate,
204-U shape junction plate, 205-piston external part, 206-piston anti-rotating device,
2061-prevents rotaring sleeve, 2062-anti-rotation pull bar, and the automatic stretch-draw control system of 3-controller,
The 301-MCU single-chip microcomputer, the 302-function button, 303-displacement acquisition unit,
The 304-pressure acquisition unit, 305-buzzing and alarm unit, the 306-display unit,
The 307-driver module, 308-motor steering output unit, 309-motor change stopping transportation and go out the unit,
310-motor pulses output unit, 4-data window machine controller, the 5-computer,
The automatic stretch-draw control system of 6-A, the automatic stretch-draw control system of 7-B.
Specific embodiment
Embodiment one:
Disclosed among Fig. 1 is a kind of automatic stretch-draw control system, comprises electric oil pump 1, by the hydraulic jack 2 of electric oil pump 1 control, and described automatic stretch-draw control system also includes automatic stretch-draw control system controller 3, data window machine controller 4 and computer 5.Being equipped with on the described hydraulic jack 2 can be with the rod-pulling type displacement transducer 201 of piston rod movement, this rod-pulling type displacement transducer 201 is fixedly mounted on the hydraulic jack oil cylinder cylindrical (referring to Fig. 3～Fig. 4), the piston external part 205 of described hydraulic jack is installed with the U-shaped junction plate 204 that cylindrical has U-lag, being equipped with in the U-lag of U-shaped junction plate 204 can be along the guide plate 203 of U-lag slip, and this guide plate 203 links together by nut with the drag link end of rod-pulling type displacement transducer 201; Also be installed with piston anti-rotating device 206 on the oil cylinder cylindrical of described hydraulic jack, this piston anti-rotating device 206 comprises anti-rotaring sleeve 2061 and anti-rotation pull bar 2062, described anti-rotation pull bar 2062 is positioned at anti-rotaring sleeve 2061, and anti-rotation pull bar 2,062 one ends stretch out outside the anti-rotaring sleeve 2061 and by nut and are connected with guide plate 204; Be separately installed with pressure sensor 202 on the inlet nozzle of described hydraulic jack 2 and the oil return nozzle.
The control valve rod of described electric oil pump 1 left and right sides control valve is connected with No. 1 stepper motor 1011, No. 2 stepper motors 1012, No. 3 stepper motors 1013,1,014 four stepper motors of No. 4 stepper motors by the stepper motor connector, this stepper motor connector comprises towards opposite adpting flange A106 and adpting flange B108(referring to Fig. 5), the output shaft of the central shaft hole of described adpting flange A106 and stepper motor 101 is connected, and trip bolt 105 lockings by passing stepper motor output shaft and adpting flange A106; The control valve rod 109 of the central shaft hole of described adpting flange B108 and electric oil pump left and right sides control valve is connected, and trip bolt 105 lockings by passing control valve rod 109 and adpting flange B108; Described adpting flange A106 and adpting flange B108 link together by connecting pin 107.
Described automatic stretch-draw control system controller 3 comprises the abbreviation of MCU(Micro Control Unit) single-chip microcomputer 301, function button 302, displacement acquisition unit 303, pressure acquisition unit 304, buzzing and alarm unit 305, display unit 306, driver module 307, motor steering output unit 308, motor change stopping transportation and go out unit 309, motor pulses output unit 310(referring to Fig. 2); The input port of described MCU single-chip microcomputer 301 is connected with function button 302, displacement acquisition unit 303, pressure acquisition unit 304 respectively, displacement acquisition unit 303 is connected with the rod-pulling type displacement transducer 201 of hydraulic jack 2, and pressure acquisition unit 304 is connected with pressure sensor 202 on hydraulic jack 2 inlet nozzles, the oil return nozzle; The output port of described MCU single-chip microcomputer 301 is connected with buzzing and alarm unit 305, display unit 306, driver module 307 respectively, driver module 307 goes out unit 309 with motor steering output unit 308, motor commentaries on classics stopping transportation respectively, motor pulses output unit 310 is connected, and described motor steering output unit 308 is connected with the stepper motor 101 of electric oil pump respectively with motor pulses output unit 310; Motor commentaries on classics stopping transportation goes out unit 309 and is connected with relay K 104, and relay K 104 is connected with the main relay 103 of control electric oil pump master motor 102 work again; Described data window machine controller 4 comprises power supply 402 and the transmission signal TCU transfer control unit 401 that is connected with this power supply 402, the input of this transmission signal TCU transfer control unit 401 is connected by driver module 307 outputs of signal-transmitting cable with automatic stretch-draw control system controller, and the output of transmission signal TCU transfer control unit 401 is connected (referring to Fig. 2) with the input of computer 5.
Embodiment two:
Disclosed among Fig. 6 is a kind of for the automatic stretch-draw control system of two hydraulic jack being carried out synchronous tension control, it includes automatic stretch-draw control system A6 and automatic stretch-draw control system B7 two cover systems, wherein stretch-draw control system A6 is embodiment one described automatic stretch-draw control system automatically, and its detailed construction does not remake and repeats to give unnecessary details; Automatically the structure of stretch-draw control system B7 is substantially with embodiment one described automatic stretch-draw control system, difference is: stretch-draw control system B7 does not include data window machine controller 4 and computer 5 automatically, driver module 307 outputs of the automatic stretch-draw control system controller of this automatic stretch-draw control system B are connected by data window machine controller 4 inputs of signal-transmitting cable with automatic stretch-draw control system A, so automatic stretch-draw control system A6 and automatic stretch-draw control system B7 namely can share a data window machine controller 4 and a computer 5, to reach the purpose that realizes two hydraulic jack are carried out Synchronization Control with same computer.
Certainly, as a kind of conversion of present embodiment two, according to the actual conditions needs, the present invention can also carry out Synchronization Control to three or three above hydraulic jack.
Embodiment three:
A kind of automatic stretching control method, this method are to utilize a kind of embodiment one described automatic stretch-draw control system to carry out the method for stretch-draw control, and it may further comprise the steps (referring to Fig. 7):
Sep1, startup computer 5 and automatic stretch-draw control system controller 3, stretch-draw control system controller 3 sends signal to four stepper motors 101 automatically, and four stepper motors 101 all reverse (i.e. counter-rotating), stop automatically when forwarding in the time of can not rotating;
Sep2, automatic stretch-draw control system controller 3 send closure signal to relay K 104, and relay K 104 is connected, the main relay 103 of the main motor 102 of relay K 104 controls, and main motor 102 energisings this moment, electric oil pump 1 is started working;
Being with the rod-pulling type displacement to pass device 201 after Sep 6, the motion of hydraulic jack piston moves, rod-pulling type displacement transducer 201 exports signal to automatic stretch-draw control system controller 3, automatically stretch-draw control system controller 3 is handled signal by data window machine controller 4 and is transferred to computer 5, shows displacement on the screen of computer 5 in real time;
Sep 7, on computer 5 input working parameter, this running parameter is predefined serial oil pressure parameter value, as 5MPa, 10MPa, 15MPa, 20MPa, 25MPa, 30MPa, 35MPa, 40MPa, 45MPa, 50MPa; The running parameter control step motor 101 that automatic stretch-draw control system controller 3 received and pressed input is hydraulic jack 2 pressurizations, make hydraulic jack 2 finish stretching process, namely be: No. 1 stepper motor 1011 of stretch-draw control system controller 3 controls clockwise rotates automatically, when the pressure sensor 202 detected oil pressure that are positioned at the hydraulic jack oil-in reach predefined minimum oil pressure parameter value 5MPa, No. 1 stepper motor 1011 stops operating automatically, and the time of maintenance setting, the time of this setting can be set arbitrarily, now is set at 1 minute; Automatically record the displacement of this moment on the computer; No. 1 stepper motor 1011 begins again to clockwise rotate then, when the pressure sensor 202 that is positioned at the hydraulic jack oil-in detects oil pressure and reaches predefined next oil pressure parameter value 10MPa, No. 1 stepper motor 1011 stops operating again automatically, and keep 1 minute setting-up time, record the displacement of this moment on the computer automatically; No. 1 stepper motor 1011 carries out work according to this, reaches predefined operating oil pressure parameter value 50MPa until oil pressure, and keeps 1 minute setting-up time, and at this moment, hydraulic pressure hydraulic jack 2 is finished stretching process;
Sep 8, after finishing stretching process, enter the off-load process; Described to enter off-load process particular content as follows: No. 1, No. 2 stepper motor rotates counterclockwise and forwards in the time of can not rotating and stops automatically; After No. 1, No. 2 stepper motor stopped, No. 3 stepper motors 1013 began to clockwise rotate up to forwarding in the time of can not rotating and stop automatically; When No. 3 stepper motor 1013 stopped, No. 4 stepper motor 1014 began to clockwise rotate, and stops operating automatically in the time of till can not rotating; The pressure sensor 202 that is positioned at the hydraulic jack oil return opening detects the backhaul pressure and is presented on the screen of computer 5, and when backhaul pressure during greater than 25MPa, red eye begins glittering, and No. 4 stepper motor 1014 stops automatically; Whether the rod-pulling type displacement transducer detects and makes zero in this process, as makes zero, and No. 4 stepper motor 1014 stops automatically; Namely be that pressure sensor 202 and the rod-pulling type displacement transducer that is positioned at the hydraulic jack oil return opening detects simultaneously, which reaches the condition of setting earlier, and which just sends the signal that stops to No. 4 stepper motors 1014; No. 4 stepper motor 1014 stops operating, and finishes the off-load process.
Sep 9, rod-pulling type displacement transducer 201 make zero, and namely finish the single tension process.
Claims (7)
1. automatic stretch-draw control system, comprise electric oil pump (1), by the hydraulic jack (2) of electric oil pump (1) control, it is characterized in that: described automatic stretch-draw control system also includes automatic stretch-draw control system controller (3), data window machine controller (4) and computer (5), also be equipped with on the described hydraulic jack (2) and can be separately installed with pressure sensor (202) on the inlet nozzle of hydraulic jack (2) and the oil return nozzle with the rod-pulling type displacement transducer (201) of piston rod movement; The control valve rod (109) of described electric oil pump (1) left and right sides control valve is connected with stepper motor (101) by the stepper motor connector; Described automatic stretch-draw control system controller (3) comprises that MCU single-chip microcomputer (301), function button (302), displacement acquisition unit (303), pressure acquisition unit (304), buzzing and alarm unit (305), display unit (306), driver module (307), motor steering output unit (308), motor change stopping transportation and go out unit (309), motor pulses output unit (310); The input port of described MCU single-chip microcomputer (301) is connected with function button (302), displacement acquisition unit (303), pressure acquisition unit (304) respectively, displacement acquisition unit (303) is connected with the rod-pulling type displacement transducer (201) of hydraulic jack (2), and pressure acquisition unit (304) is connected with pressure sensor (202) on hydraulic jack (2) inlet nozzle, the oil return nozzle; The output port of described MCU single-chip microcomputer (301) is connected with buzzing and alarm unit (305), display unit (306), driver module (307) respectively, driver module (307) goes out unit (309) with motor steering output unit (308), motor commentaries on classics stopping transportation respectively, motor pulses output unit (310) is connected, and described motor steering output unit (308) is connected with the stepper motor (101) of electric oil pump respectively with motor pulses output unit (310); Motor commentaries on classics stopping transportation goes out unit (309) and is connected with relay K (104), relay K (104) is connected with the main relay (103) of control electric oil pump master's motor (102) work again, described data window machine controller (4) comprises power supply (402) and the transmission signal TCU transfer control unit (401) that is connected with this power supply (402), the input of this transmission signal TCU transfer control unit (401) is connected by driver module (307) output of signal-transmitting cable with automatic stretch-draw control system controller, and the output of transmission signal TCU transfer control unit (401) is connected with the input of computer (5).
2. automatic stretch-draw control system according to claim 1, it is characterized in that: described rod-pulling type displacement transducer (201) is fixedly mounted on the hydraulic jack oil cylinder cylindrical, the piston external part (205) of described hydraulic jack is installed with the U-shaped junction plate (204) that cylindrical has U-lag, being equipped with in the U-lag of U-shaped junction plate (204) can be along the guide plate (203) of U-lag slip, and this guide plate (203) links together by nut with the drag link end of rod-pulling type displacement transducer (201).
3. automatic stretch-draw control system according to claim 2, it is characterized in that: also be installed with piston anti-rotating device (206) on the oil cylinder cylindrical of described hydraulic jack, this piston anti-rotating device (206) comprises anti-rotaring sleeve (2061) and anti-rotation pull bar (2062), described anti-rotation pull bar (2062) is positioned at anti-rotaring sleeve (2061), and anti-rotation pull bar (2062) one ends stretch out outside the anti-rotaring sleeve (2061) and by nut and are connected with guide plate (203).
4. according to claim 1 or 2 or 3 described automatic stretch-draw control systems, it is characterized in that: described stepper motor (101) comprises No. 1 stepper motor (1011), No. 2 stepper motors (1012), No. 3 stepper motors (1013), No. 4 stepper motors (1014), described stepper motor connector comprises towards opposite adpting flange A(106) and adpting flange B(108), the output shaft of central shaft hole described adpting flange A(106) and stepper motor (101) is connected, and by passing stepper motor output shaft and adpting flange A(106) trip bolt (105) locking; The control valve rod (109) of central shaft hole described adpting flange B(108) and electric oil pump left and right sides control valve is connected, and by passing control valve rod (109) and adpting flange B(108) trip bolt (105) lock; Described adpting flange A(106) and adpting flange B(108) link together by connecting pin (107).
5. automatic stretching control method, it is characterized in that: this method may further comprise the steps:
Sep1, startup computer (5) and automatic stretch-draw control system controller (3), stretch-draw control system controller (3) sends signal to four stepper motors (101) automatically, and four stepper motors (101) all reverse, and stop automatically when forwarding in the time of can not rotating;
Sep2, automatic stretch-draw control system controller (3) send closure signal to relay K (104), relay K (104) is connected, relay K (104) is controlled the main relay (103) of main motor (102), main motor this moment (102) energising, and electric oil pump (1) is started working;
Sep 3, pressure sensor (202) energising that is positioned on hydraulic jack oil-feed, the oil return nozzle are started working, and zero setting;
Sep 4, automatic stretch-draw control system controller (3) send to No. 2 stepper motors (1012) and clockwise rotate signal, and No. 2 stepper motors (1012) clockwise rotate up to not changeing when ending and stop automatically; After No. 2 stepper motors (1012) quit work, No. 1 stepper motor (1011) began to clockwise rotate the control control valve to hydraulic jack (2) fuel feeding, promotes the piston motion, and hydraulic jack (2) is started working;
Sep 5, the pressure sensor (202) that is installed on hydraulic jack inlet nozzle and the oil return nozzle begin detected pressures, and transfer signals in the automatic stretch-draw control system controller (3), automatically stretch-draw control system controller (3) is handled signal by data window machine controller (4) and is transferred to computer (5), on computer screen, show operating pressure, backhaul pressure in real time, and by being installed in the automatic evaluation work stretching force of stretching force design formulas of the software generation in the computer (5);
It is mobile to be with the rod-pulling type displacement to pass device (201) after Sep 6, the motion of hydraulic jack piston, rod-pulling type displacement transducer (201) exports signal to automatic stretch-draw control system controller (3), automatically stretch-draw control system controller (3) is handled signal by data window machine controller (4) and is transferred to computer (5), shows displacement on the screen of computer (5) in real time;
Sep 7, go up input working parameter at computer (5), stretch-draw control system controller (3) receives and be that hydraulic jack (2) is pressurizeed by the running parameter control step motor (101) of input automatically, makes hydraulic jack (2) finish stretching process;
Sep 8, after finishing stretching process, enter the off-load process;
Sep 9, rod-pulling type displacement transducer (201) make zero, and namely finish the single tension process.
6. automatic stretching control method according to claim 5 is characterized in that: in step Sep 7, described running parameter in computer (5) input is predefined serial oil pressure parameter value; Described automatic stretch-draw control system controller (3) is hydraulic jack (2) pressurization by the running parameter control step motor (101) of input, it is as follows to make hydraulic jack (2) finish the particular content of stretch-draw work: stretch-draw control system controller (3) No. 1 stepper motor of control (1011) clockwise rotates automatically, when the detected oil pressure of the pressure sensor that is positioned at the hydraulic jack oil-in (202) reaches predefined minimum oil pressure parameter value, No. 1 stepper motor (1011) stops operating automatically, and the time of maintenance setting, record the displacement of this moment on the computer automatically; No. 1 stepper motor (1011) begins again to clockwise rotate then, when the pressure sensor that is positioned at the hydraulic jack oil-in (202) detects oil pressure and reaches predefined next oil pressure parameter value, No. 1 stepper motor (1011) stops operating again automatically, and the time of maintenance setting, record the displacement of this moment on the computer automatically; No. 1 stepper motor (1011) carries out work according to this, reaches predefined maximum oil pressure parameter value until oil pressure, and keeps the time of setting, and at this moment, hydraulic pressure hydraulic jack (2) is finished stretching process.
7. according to claim 5 or 6 described automatic stretching control methods, it is characterized in that: in step Sep 8, described to enter off-load process particular content as follows: No. 1, No. 2 stepper motor rotates counterclockwise and forwards in the time of can not rotating and stops automatically; After No. 1, No. 2 stepper motor stopped, No. 3 stepper motors (1013) began to clockwise rotate up to forwarding in the time of can not rotating and stop automatically; No. 3 stepper motors (1013) are when stopping, and No. 4 stepper motors (1014) begin to clockwise rotate, and stop operating automatically in the time of till can not rotating; The pressure sensor (202) that is positioned at the hydraulic jack oil return opening detects backhaul pressure and is presented on the screen of computer (5), and when backhaul pressure during greater than 25MPa, red eye begins glittering, and No. 4 stepper motors (1014) stop automatically; Whether the rod-pulling type displacement transducer detects and makes zero in this process, as makes zero, and No. 4 stepper motors (1014) stop automatically; Namely be that pressure sensor (202) and the rod-pulling type displacement transducer that is positioned at the hydraulic jack oil return opening detects simultaneously, which reaches the condition of setting earlier, and which just sends the signal that stops to No. 4 stepper motors (1014); No. 4 stepper motors (1014) stop operating, and finish the off-load process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110275482 CN102444290B (en) | 2011-09-16 | 2011-09-16 | Automatic tension control system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110275482 CN102444290B (en) | 2011-09-16 | 2011-09-16 | Automatic tension control system and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102444290A CN102444290A (en) | 2012-05-09 |
| CN102444290B true CN102444290B (en) | 2013-08-28 |
Family
ID=46007194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110275482 Active CN102444290B (en) | 2011-09-16 | 2011-09-16 | Automatic tension control system and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102444290B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306488B (en) * | 2013-07-10 | 2015-10-21 | 耿晓梅 | The stretching machine that tension of prestressed tendon amount of recovery controls automatically |
| CN103321433B (en) * | 2013-07-10 | 2016-01-13 | 北海精一混凝土制品有限责任公司 | Automatic Tensioning machine |
| CN104111670B (en) * | 2014-06-20 | 2017-01-25 | 杭州浙锚预应力有限公司 | Prestressed tension control system and control method |
| CN104965533A (en) * | 2015-04-27 | 2015-10-07 | 同济大学 | Pre-stress single-end single-jack intelligent tensioning control system |
| CN104949849A (en) * | 2015-04-27 | 2015-09-30 | 同济大学 | Jack demarcating and calibrating methods |
| CN112227730B (en) * | 2020-10-16 | 2022-03-15 | 盐城市双强管桩有限公司 | Interactive device of numerical control tensioning equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458616Y (en) * | 2000-11-10 | 2001-11-07 | 李珠 | Intellient controlled prestress stretching device |
| CN1424476A (en) * | 2003-01-09 | 2003-06-18 | 李珠 | Automatic prestressing extension devices |
| CN2617862Y (en) * | 2003-01-09 | 2004-05-26 | 李珠 | Automatic prestressed tensioner |
| CN201011135Y (en) * | 2007-03-23 | 2008-01-23 | 陆国良 | Prestressed steel stranded wire automatic stretching control system |
| CN201560996U (en) * | 2009-10-24 | 2010-08-25 | 福州恒拓工业自动化有限公司 | Automatic control system for speed regulating valve in combination valve of steel bar tension machine |
| 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 |
-
2011
- 2011-09-16 CN CN 201110275482 patent/CN102444290B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2458616Y (en) * | 2000-11-10 | 2001-11-07 | 李珠 | Intellient controlled prestress stretching device |
| CN1424476A (en) * | 2003-01-09 | 2003-06-18 | 李珠 | Automatic prestressing extension devices |
| CN2617862Y (en) * | 2003-01-09 | 2004-05-26 | 李珠 | Automatic prestressed tensioner |
| CN201011135Y (en) * | 2007-03-23 | 2008-01-23 | 陆国良 | Prestressed steel stranded wire automatic stretching control system |
| 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 |
| CN201560996U (en) * | 2009-10-24 | 2010-08-25 | 福州恒拓工业自动化有限公司 | Automatic control system for speed regulating valve in combination valve of steel bar tension machine |
| CN202227706U (en) * | 2011-09-16 | 2012-05-23 | 柳州市建桥预应力机械厂 | Automatic tensioning control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102444290A (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102444290B (en) | Automatic tension control system and method thereof | |
| CN202227706U (en) | Automatic tensioning control system | |
| CN103526948B (en) | The control method of intelligent tensioning system and intelligent tensioning system | |
| CN106143862A (en) | A kind of ship steering engine driving means and detecting system thereof | |
| CN205687507U (en) | A kind of hydraulic proportional controls automatic horizontal levelling device | |
| CN201647828U (en) | Single-double lifting point transformation type lifting device | |
| CN103660360A (en) | Intelligent control system for four-column hydraulic machine tool | |
| CN202849942U (en) | Displacement sensor installation assembly in intelligent stretch-draw system | |
| CN101769809A (en) | Anchor chain lacerating machine | |
| CN107008829A (en) | A kind of construction Machines reinforcement metal straightening cutter device | |
| CN202824595U (en) | Casting machine automatic adjusting mould control system | |
| CN104675782B (en) | Prestressing force intelligent tensioning electro-hydraulic servo equipment and control method thereof | |
| CN204295871U (en) | Pre-tensioned rail plate synchronous tension puts a control system | |
| CN101644153A (en) | Synchronous control system of injection head and wound roll of continuous oil pipe operating machine and control method thereof | |
| CN201811725U (en) | Steering angle detection device for construction machine | |
| CN202500342U (en) | Post-tensioned prestressing automatic tensioning system | |
| CN207263368U (en) | A kind of self-checking device of wireless work(figure test terminal | |
| CN107143542B (en) | A kind of double cylinder synchronous drive control devices and method | |
| CN202899630U (en) | Tensioning system | |
| CN106142651A (en) | Intelligent control system for four-column hydraulic machine tool | |
| CN202501945U (en) | Under-anchor pre-stressing force detection device | |
| CN205558954U (en) | Hydraulic support stand of stroke sensor is put to in -band | |
| CN204758268U (en) | Slip hook performance check out test set is hung to aircraft | |
| CN203680872U (en) | Intelligent control system for four-column hydraulic machine tool | |
| CN107328520A (en) | The automated calibration system and method for a kind of wireless work(figure test terminal |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: LIUZHOU JIANQIAO PRESTRESS INTELLIGENT EQUIPMENT C Free format text: FORMER OWNER: LIUZHOU JIANQIAO PRESTRESS MACHINERY PLANT Effective date: 20140207 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 545100 LIUZHOU, GUANGXI ZHUANG AUTONOMOUS REGION TO: 545007 LIUZHOU, GUANGXI ZHUANG AUTONOMOUS REGION |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140207 Address after: 545007 the Guangxi Zhuang Autonomous Region Sun Village hilltop village Liunan District, Liuzhou City metropolitan Lake Tuen No. 2 Patentee after: LIUZHOU JIANQIAO PRESTRESSING FORCE INTELLIGENT EQUIPMENT CO., LTD. Address before: Keelung Development Zone, the Liujiang River County, Liuzhou City, the Guangxi Zhuang Autonomous Region Hing Road No. 4 545100 Patentee before: Liuzhou Jianqiao Prestress Machinery Plant |