CN103364276A - Intelligent synchronous tension detection device of pre-stress under anchor - Google Patents
Intelligent synchronous tension detection device of pre-stress under anchor Download PDFInfo
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- CN103364276A CN103364276A CN2012100962604A CN201210096260A CN103364276A CN 103364276 A CN103364276 A CN 103364276A CN 2012100962604 A CN2012100962604 A CN 2012100962604A CN 201210096260 A CN201210096260 A CN 201210096260A CN 103364276 A CN103364276 A CN 103364276A
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Abstract
The invention provides an intelligent synchronous tension detection device of pre-stress under an anchor. The intelligent synchronous tension detection device comprises an oil tank, a plunger pump and an electromagnetic directional valve. A control cabinet is arranged at the rear upward side of the oil tank and is respectively provided with a data collection and control instrument, an antenna and the like; a jack is provided with a pressure sensor and a displacement sensor; the data collection and control instrument adopts a VIFI wireless technology and can realize accurate measurement and control of a system to automatically obtain the shrinkage amount of a pre-stress rib; a computer can control a plurality of the intelligent synchronous tension detection devices to be simultaneously started and stopped and realize synchronous tension; the device not only has an intelligent program control function and also has manual oil feeding and manual returning functions, so as to conveniently operate under a special condition. After a tension construction is finished, the same hydraulic device is communicated with the jack to carry out acceptance inspection, evaluation and detection on the pre-stress rib under the anchor, and effective pre-stress of the single pre-stress rib can be detected in real time; meanwhile, a current condition of a detected anchor cable is not damaged.
Description
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technical field:the present invention relates to field of civil engineering, particularly relate to building
A kind of anchor lower prestress intelligent synchronization tension test device in engineering construction
background technology:
The stretch-draw of beam body, anchorage technology are applied widely in bridge construction construction now.Along with China builds infrastructure energetically, particularly, to the increasing of traffic, the energy, water conservancy and urban infrastructure construction dynamics, for the reliability detection technique with the stretch-draw of beam body, anchoring construction quality, will show very wide application prospect.
The stretch-draw of beam body, the advance of anchorage technology, reliability, economy gain public acceptance, but as permanent work, prestress anchorage cable engineering particularly, whether the variation relation of effective prestress is in a safe condition to engineering, therefore, how correct stretch-draw detect effective prestress under anchor and seem very important can be described as blank for the pick-up unit of anchor cable construction stretch-draw and quality both at home and abroad at present simultaneously.Therefore, work out high precision, low cost, practical, can be as prestressed stretch-draw, the control engineering construction quality, can the prestress anchorage cable reached in operation after constructing be detected again simultaneously, and the construction stretching checkout equipment that structure itself is not impacted, become a urgent problem in prestressed anchor cable stretching and effective prestress detection.
In existing beam body tensioning construction process, it is main that the record of stretch-draw and data is manually-operated, uncertain factor is too many, lack effective monitoring and detection means in construction and after construction, there is serious potential safety hazard in the beam body construction, directly cause anchor lower prestress not meet designing requirement and request for utilization, have a strong impact on the serviceable life of bridge, increase the bridge operation costs.
the content of invention:purpose of the present invention will provide a kind of anchor lower prestress intelligence exactly
The synchronous tension pick-up unit, it can overcome the existing above defect of prior art.The object of the present invention is achieved like this, a kind of anchor lower prestress intelligent synchronization tension test device, comprise fuel tank, ram pump, solenoid directional control valve, it is characterized in that: be provided with on control box, control box in the back upper place of fuel tank and be respectively equipped with AC-DC power supply, data acquisition control instrument, frequency converter, antenna; Be provided with ram pump, liquid level gauge, oil filler, temperature sensor, liquid level sensor in fuel tank; One end of ram pump is connected with variable-frequency motor, and the other end is connected with oil circuit A, oil circuit B, and oil circuit A, oil circuit B communicate with valve piece, retaining valve, solenoid directional control valve, surplus valve respectively; Be provided with oil-out A, oil-out B on described valve piece; And by oil inlet pipe, scavenge pipe, with the oil supply hole, the spill port that arrange on centre-hole jack or front clip type jack, communicate respectively; By a computing machine, control this device more than two and work simultaneously.Described centre-hole jack is to be provided with piston in oil cylinder, is provided with the punching cover in piston, and punching is overlapped left front end and is disposed with moveable anchor assembly, limiting plate, and punching cover rear end is provided with stop nut.The left front top of described oil cylinder is provided with protective cover, and in protective cover, upper end is provided with displacement transducer, and lower end is provided with pressure transducer.Sensor is connected with the data acquisition control instrument by data connecting line; Described data acquisition control instrument is the control signal from computing machine by antenna reception, and starts variable-frequency motor work, and Real-time Collection is sent to computing machine from the signal of sensor.Oil inlet pipe on hydraulic means, scavenge pipe communicate with the oil supply hole, the spill port that arrange on front clip type jack; The below of oil supply hole is provided with pressure transducer, described front clip type jack, be to be provided with piston B in oil cylinder B, is provided with punching cover B in piston B, the right-hand member of punching cover B is provided with tool clamping piece, on the right-hand member outer ring of punching cover B and the outer ring of tool clamping piece, is provided with Working-Clip sleeve; The right top of described piston B is provided with footstock, and the below of footstock is connected with the shifter connecting link on displacement transducer.Described frequency converter is to be connected with the data acquisition control instrument by PORT COM, and the receive frequency instruction, carry out rotational speed regulation to frequency conversion electrical equipment, starts and stop variable-frequency motor work.
The present invention is by computer program controlled in wireless flow rate of hydraulic system, oil-feed, pressure release, oil return; By a computing machine, two ends superhigh pressure hydraulic oil pump and synchronous startup of feed-through hydraulic lifting jack are applied to top lift to anchor cable during synchronous tension.The data acquisition controller has been installed in equipment, in stretching process, wireless real-time acquisition is arranged on the shift value produced in the force value of lifting jack oil-in place pressure transducer and the moving process of piston top elevator, by computing machine, data are gathered to the feedback numerical value that controller gathers, accurately control two ends feed-through hydraulic lifting jack and act on the stretching force on deformed bar.This device not only has intelligent program-controlled function, also has been equipped with manual oil-feed and manual oil return function, convenient operation in particular cases simultaneously.Stretching construction can pass through same hydraulic means after finishing, the examination assessment that before connecting, clip type jack carries out the anchor lower prestress muscle detects, accurately control the variation of an equipment output oil mass by computer, output in the front cassette hydraulic jack of UHV (ultra-high voltage) single anchor cable is applied to counter pull.Simultaneously counter be pulled through journey in wireless real-time acquisition be arranged on the counter pull value of lifting jack oil-in place pressure transducer and be arranged on the stretch value of the displacement transducer on lifting jack.From adopt counter pull and displacement data carry out software analysis, draw in real time the effective prestress of detected single presstressed reinforcing steel, do not destroy again the current condition of detected anchor cable simultaneously.
the present invention compared with prior art has the following advantages:
A, accurately control prestressing force pulling force value: the pressure transducer be arranged on lifting jack has higher sample frequency, can the real-time oil pressure value of rapid reaction, therefore can realize the accurate control of stretching construction central sill body two ends prestressed stretch-draw value.
B, hydraulic system possess electrodeless variable function: this hydraulic system adopts converter technique, detect by prestressed stretch-draw the rotating speed that frequency values that the intelligent data acquisition controller outputs to frequency converter is controlled variable-frequency motor, reach the variation of regulating superpressure oil pump output oil mass, thereby make system possess the compatibility of the different tonnages of use and different model lifting jack and the accuracy that prestressed stretch-draw detects;
C, accurately measurement control: the data acquisition control instrument adopts the VIFI wireless technology, gather controller and there is the sample frequency of 5Hz, can Quick Acquisition be arranged on pressure transducer on lifting jack and the digital signal of displacement transducer, therefore can realize the accurate measurement of system is controlled.
D, system draw the amount of recovery of presstressed reinforcing steel automatically: system can be unloaded slowly by the oil pressure that pressure-release valve of increase is controlled in jack cylinder in hydraulic circuit, thereby makes the amount of recovery changing value that can analyze presstressed reinforcing steel in the displacement curve collected;
E, realize synchronous tension: because the WIFI wireless telecommunications control technology adopted in system, a computing machine can be controlled multiple devices, thus can accomplish that multiple devices start simultaneously and close, thereby realize the synchronous tension of real meaning;
F, data acquisition, signal transmission, dirigibility, strong adaptability: system adopts the WIFI wireless telecommunications to control, and stretch-draw, testing staff can realize the control to hydraulic system in visual range;
G, reproduction prestressed stretch-draw test process, the accumulation project data: the data that the stretching construction process collects can automatically generate the stretch-draw curve and be saved to computer in software, can from software, review this conditional curve in the future, unit in charge of construction, detection time, the stretch-draw such as stress value, presstressed reinforcing steel shift value, detection construction information, facilitate competent authorities and technician can judge with this whether work progress meets standard, and the project data of accumulation can provide original foundation for pre-stress construction development from now on;
H, the present invention substitute existing manual manually-operated device, realize the construction robotization, liberate the productive forces: system adopts intelligent program control, after preparative work before construction is carried out, only need an operator just can complete the work that needs three people to complete before, and speed is faster, economic effect is better;
After I, stretching construction complete, can be by changing the mode of lifting jack, to the anchor lower prestress muscle assessed, acceptance test, and do not destroy anchor structure: the variable function had by front clip type jack and hydraulic system completes accurate testing requirement;
J, accurately measure the anchor lower prestress value: computer is according to collecting displacement, the pressure curve value be arranged on front clip type jack, realizes realizing acting on the accurate control of counter pull on presstressed reinforcing steel the measurement of anchor lower prestress value;
K, there is multiple function of safety protection: calculate the warning that function monitors voltage, working temperature, liquid level and the various different situations of equipment in operational process in real time;
L, standard construction process, got rid of personal error, conscientiously improves the effects such as construction quality.
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the accompanying drawing explanation: Fig. 1 is structural representation of the present invention;
fig. 2 is front clip type jack structural representation;
1. fuel tank, 2. ram pump, 3. oil circuit A, 4. oil circuit B, 5. oil filler, 6. surplus valve, 7. oil-out A, 8. oil-out B, 9. valve piece, 10. retaining valve, 11. solenoid directional control valve, 12. ball valve, 13. standby pressure sensor, 14. variable-frequency motor, 15. antenna, 16. power knob, 17. handle, 18. AC-DC power supply, 19. data acquisition control instrument, 20. frequency converter, 21. control box, 22. power interface, 23. tensimeter, 24. data connecting line, 25. liquid level gauge, 26. tool box, 27. temperature sensor, 28. liquid level sensor, 29. spill port, 30. hydraulic quick coupler, 31. protective cover, 32. displacement transducer, 33. moveable anchor assembly, 34. limiting plate, 35. pressure transducer, 36. setscrew nut, 37. punching cover, 38. piston, 39. oil cylinder, 40. oil supply hole, 41. oil inlet pipe, 42. scavenge pipe, 43. computing machine, 44.
front clip type jack, 44-1.tool clamping piece, 44-2. Working-Clip sleeve, 44-3. footstock, 44-4. displacement connecting link, 44-5. oil cylinder B, 44-6. piston B, 44-7. punching cover B
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Embodiment: below in conjunction with accompanying drawing, the invention will be further described;
A kind of anchor lower prestress intelligent synchronization tension test device, comprise fuel tank 1, ram pump 2, solenoid directional control valve 11, it is characterized in that: in the back upper place of fuel tank 1, be provided with on control box 21, control box 21 and be respectively equipped with AC-DC power supply 18, data acquisition control instrument 19, frequency converter 20, antenna 15; Be provided with ram pump 2, liquid level gauge 25, oil filler 5, temperature sensor 27, liquid level sensor 28 in fuel tank 1; One end of ram pump 2 is connected with variable-frequency motor 14, and the other end is connected with oil circuit A3, oil circuit B4, and oil circuit A3, oil circuit B4 communicate with valve piece 9, retaining valve 10, solenoid directional control valve 11, surplus valve 6 respectively; Be provided with oil-out A7, oil-out B8 on described valve piece 9; And by oil inlet pipe 41, scavenge pipe 42, with the oil supply hole 40, the spill port 29 that arrange on centre-hole jack or front clip type jack 44, communicate respectively; By a computing machine 43, control this device more than two and work simultaneously.Described centre-hole jack is to be provided with piston 38 in oil cylinder 39, is provided with punching cover 37 in piston 38, and punching is overlapped 37 left front ends and is disposed with moveable anchor assembly 33, limiting plate 34, and punching is overlapped 37 rear ends and is provided with stop nut 36; The left front top of described oil cylinder 39 is provided with protective cover 31, and in protective cover 31, upper end is provided with displacement transducer 32, and lower end is provided with pressure transducer 35, and sensor is connected with data acquisition control instrument 19 by data connecting line 24; The control signal that described data acquisition control instrument 19 receives from computing machine 43 by antenna 15, and start variable-frequency motor 14 work, and Real-time Collection is sent to computing machine from the signal of sensor; Oil supply hole 40, spill port 29 that oil inlet pipe 41 on hydraulic means, scavenge pipe 42 are directly connected on front clip type jack 44 carry out anchor lower prestress examination assessment detection.
During concrete enforcement, at first assemble and install punching or front clip type jack, connect the signal data connecting line 24 on punching or front clip type jack upward pressure sensor 35, displacement transducer 32, connect hydraulic system and centre-hole jack or front clip type jack with oil pipe, switch on power.Open computing machine 43, by the WIFI radio function, be transferred to data acquisition control instrument 19, connect wireless network interface.
After preliminary work finishes, start stretch-draw or detection.
Computing machine 43 is opened tension test control analysis software, and input call parameter data, as stretch-draw engineering information, tension stress value, electric machine frequency, are held the lotus time; Maximum stress value during detection, minimum stress value, motor speed, flow output; Input complete click later and determine, control information sends on the data acquisition control instrument 19 of fuel tank 1 top by the wireless network interface that is connected to computing machine 43.Data acquisition control instrument 19 receives the control signal from computing machine 43 by antenna 15, start variable-frequency motor 14 work, after variable-frequency motor 14 work, open solenoid directional control valve 11, hydraulic oil is by ram pump 2, be pressed into solenoid directional control valve 11 by oil circuit A3, through oil-out A7, oil pressure is entered to the oil supply hole 40 of lifting jack, enter oil cylinder 39, promoting piston 38 ejects, piston 38 drives moveable anchor assembly 33 and moves forward, reinforcing bar is fixed in intermediate plate by moveable anchor assembly 33, collect stretch-draw target force value in computer software after, in computing machine 43, automatically send instructions on data acquisition control instrument 19, instruction frequency converter 20 reduces variable-frequency motor 14 rotating speeds, the solenoid directional control valve of instruction simultaneously 11 commutates to meta, cut off oil circuit A3 through solenoid directional control valve 11, oil inlet pipe 41 is to the oil pressure of lifting jack, utilize oil cylinder 39 to open retaining valve 10 to the back-pressure in oil-out A7, carry out holding the lotus pressurize in target force value scope, ftercompction, meanwhile, data acquisition control instrument 19 collects displacement transducer 32 and 35 two numerical signals of pressure transducer that are arranged on lifting jack by data connecting line 24, data feed back in computing machine 43 softwares wirelessly, software carries out control and the processing of instructions by the feedback of numerical signal.Computing machine 43 sends instructions to that control box 21 in this device can be opened, powered-down, can occur abnormal in, realize reporting to the police and insurance.
When the builder will carry out single hole stretch-draw or check and accept assessment detecting to the anchor lower prestress muscle, directly by oil inlet pipe 41, scavenge pipe 42 is connected on the oil supply hole 40 and spill port 29 of front clip type jack, to in the tool clamping piece 44-1 of single steel strand the past clip type jack and punching cover B44-7, pass, because front clip type jack forms " not kinetoplast " by piston B44-6 and footstock 44-3, oil cylinder B44-5, punching cover B44-7 assembly, " movable body " that tool clamping piece 44-1 forms, what adopt is the version of two oil circuits, under the effect of oil pressure, movable body is with respect to not kinetoplast motion, realize single hole stretch-draw and detection, after variable-frequency motor is with the frequency work set, open solenoid directional control valve 11, hydraulic oil is by ram pump 2, be pressed into solenoid directional control valve 11 by oil circuit A3, through oil-out A7, oil pressure is entered to the oil supply hole 40 of front clip type jack, enter oil cylinder 44-5, promoting oil cylinder 44-5 moves backward, tool clamping piece 44-1 clamps steel strand wires simultaneously, pull steel strand wires slowly to move backward, clip type jack top offset sensor 32 before data acquisition control instrument 19 Real-time Collections, the numerical signal of pressure transducer 35, by antenna 15, send in computing machine 43, after computer software obtains required anchor lower prestress value, send instructions to data acquisition control instrument 19, open solenoid directional control valve 11, hydraulic oil is pressed in the lifting jack spill port by oil-out B8, drive oil cylinder B44-5 backhaul, and back off tool intermediate plate 44-1, steel strand wires exit lifting jack.
Claims (6)
1. an anchor lower prestress intelligent synchronization tension test device, comprise fuel tank (1), ram pump (2), solenoid directional control valve (11), it is characterized in that: in the back upper place of fuel tank (1), be provided with on control box (21), control box (21) and be respectively equipped with AC-DC power supply (18), data acquisition control instrument (19), frequency converter (20), antenna (15); Be provided with ram pump (2), liquid level gauge (25), oil filler (5), temperature sensor (27), liquid level sensor (28) in fuel tank (1); One end of ram pump (2) is connected with variable-frequency motor (14), the other end and oil circuit A(3), oil circuit B(4) be connected, oil circuit A(3), oil circuit B(4) with valve piece (9), retaining valve (10), solenoid directional control valve (11), surplus valve (6), communicate respectively; Be provided with oil-out A(7 on described valve piece (9)), oil-out B(8); And by oil inlet pipe (41), scavenge pipe (42), with centre-hole jack or upper oil supply hole (40), the spill port (29) arranged of front clip type jack (44), communicate respectively; By a computing machine (43), control this device more than two and work simultaneously.
2. anchor lower prestress intelligent tensioning pick-up unit according to claim 1, it is characterized in that: described centre-hole jack is to be provided with piston (38) in oil cylinder (39), be provided with punching cover (37) in piston (38), the left front end of punching cover (37) is disposed with moveable anchor assembly (33), limiting plate (34), and punching cover (37) rear end is provided with stop nut (36).
3. anchor lower prestress intelligent tensioning pick-up unit according to claim 2; it is characterized in that: the left front top of described oil cylinder (39) is provided with protective cover (31); in protective cover (31), upper end is provided with displacement transducer (32), and lower end is provided with pressure transducer (35).
4. anchor lower prestress intelligent tensioning pick-up unit according to claim 1 is characterized in that: displacement transducer (32), pressure transducer (35) are connected with data acquisition control instrument (19) by data connecting line (24); Described data acquisition control instrument (19) receives the control signal from computing machine (43) by antenna (15), and starts variable-frequency motor (14) work, and Real-time Collection is sent to computing machine from the signal of sensor.
5. anchor lower prestress intelligent tensioning pick-up unit according to claim 1 is characterized in that: the oil inlet pipe on hydraulic means (41), scavenge pipe (42) communicate with upper oil supply hole (40), the spill port (29) arranged of front clip type jack (44); The below of oil supply hole (40) is provided with the described front clip type jack of pressure transducer (35) (44), at oil cylinder B(44-5) in be provided with piston B(44-6), piston B(44-6) be provided with punching cover B(44-7 in), punching cover B(44-7) right-hand member is provided with tool clamping piece (44-1), punching cover B(44-7) the right-hand member outer ring and the outer ring of tool clamping piece (44-1) on be provided with Working-Clip sleeve (44-2); Described piston B(44-6) right top is provided with footstock (44-3), and the below of footstock (44-3) is connected with the shifter connecting link (44-4) on displacement transducer (32).
6. anchor lower prestress intelligent tensioning pick-up unit according to claim 1, it is characterized in that: described frequency converter (20) is to be connected with data acquisition control instrument (19) by PORT COM, the receive frequency instruction, frequency conversion electrical equipment is carried out to rotational speed regulation, start and stop variable-frequency motor (14) work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210096260.4A CN103364276B (en) | 2012-03-31 | 2012-03-31 | A kind of anchor lower prestress intelligent synchronization tension test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210096260.4A CN103364276B (en) | 2012-03-31 | 2012-03-31 | A kind of anchor lower prestress intelligent synchronization tension test device |
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| CN103364276A true CN103364276A (en) | 2013-10-23 |
| CN103364276B CN103364276B (en) | 2015-08-26 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108502777A (en) * | 2018-04-11 | 2018-09-07 | 日照斯特佳尔基础工程有限责任公司 | Centre-hole jack |
| CN109682519A (en) * | 2018-12-29 | 2019-04-26 | 四川陆通检测科技有限公司 | Detecting and the system and method for stablizing effective prestress under intermediate plate displacement method test anchor |
| CN110332000A (en) * | 2019-07-27 | 2019-10-15 | 山东焱鑫矿用材料加工有限公司 | A kind of dedicated prestress application device of intelligent overall length cementation anchor cable |
| CN110331997A (en) * | 2019-07-27 | 2019-10-15 | 山东焱鑫矿用材料加工有限公司 | A kind of dedicated cementation material conveying device of intelligent overall length cementation anchor cable |
| CN110514523A (en) * | 2019-08-29 | 2019-11-29 | 广东工业大学 | A kind of stress loading combination unit |
| CN111811945A (en) * | 2020-06-30 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Prestressed anchor cable installation test system and method |
| CN112865905A (en) * | 2021-01-11 | 2021-05-28 | 南通滨睿智能科技有限公司 | Online equipment control system and method |
| CN114754222A (en) * | 2022-04-07 | 2022-07-15 | 天津市翔悦密封材料股份有限公司 | Emergency rescue flexible pressure application rapid plugging device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108502777A (en) * | 2018-04-11 | 2018-09-07 | 日照斯特佳尔基础工程有限责任公司 | Centre-hole jack |
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| CN110331997A (en) * | 2019-07-27 | 2019-10-15 | 山东焱鑫矿用材料加工有限公司 | A kind of dedicated cementation material conveying device of intelligent overall length cementation anchor cable |
| CN110514523A (en) * | 2019-08-29 | 2019-11-29 | 广东工业大学 | A kind of stress loading combination unit |
| CN111811945A (en) * | 2020-06-30 | 2020-10-23 | 中铁二院工程集团有限责任公司 | Prestressed anchor cable installation test system and method |
| CN112865905A (en) * | 2021-01-11 | 2021-05-28 | 南通滨睿智能科技有限公司 | Online equipment control system and method |
| CN114754222A (en) * | 2022-04-07 | 2022-07-15 | 天津市翔悦密封材料股份有限公司 | Emergency rescue flexible pressure application rapid plugging device and method |
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