CN103953600A - Automatic tension control system with retraction amount measurement valve block - Google Patents
Automatic tension control system with retraction amount measurement valve block Download PDFInfo
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- CN103953600A CN103953600A CN201410174010.7A CN201410174010A CN103953600A CN 103953600 A CN103953600 A CN 103953600A CN 201410174010 A CN201410174010 A CN 201410174010A CN 103953600 A CN103953600 A CN 103953600A
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Abstract
The invention discloses an automatic tension control system with a retraction amount measurement valve block, and relates to a tension control system. The automatic tension control system comprises a jack, a pump station and the retraction amount measurement valve block, wherein the retraction amount measurement valve block comprises a valve body; an oil inlet, an oil return hole and an oil outlet are formed in the valve body respectively; the oil outlet is connected with the input end of the jack; the oil return hole is connected with the output end of the jack; a safety valve and pressure sensors are mounted on the oil paths of the oil return hole and the oil outlet respectively; four small holes are formed between the oil paths of the oil return hole and the oil outlet, the small hole a is communicated with an oil path of the oil inlet, the small holes b and c are communicated with the oil paths of the two pressure sensors, the small hole d is communicated with an oil return tank of the pump station, and the four small holes are connected with an electromagnetic reversing valve; small holes e and f are formed in the oil path of the oil outlet and connected with a low-flow slow unloading valve, and the small hole f is communicated with the oil return tank of the pump station. According to the automatic tension control system, the actual tension retraction amount can be accurately measured, the tension speed can be adjusted, and the construction process quality can be improved; the automatic tension control system is simple in structure and convenient to manufacture.
Description
Technical field
The present invention relates to a kind of tension control system, particularly a kind of automatic tensioning control system with surveying amount of recovery valve piece.
Background technique
At present, do not have to use or valve piece on there is no the tension control system of integrated survey amount of recovery function, after putting because pressure declines suddenly, the prestressed tendon elasticity moment retraction after stretch-draw, drive backward stroke of the piston distance to surpass true amount of recovery, thereby can not effectively measure actual stretch-draw amount of recovery.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of automatic tensioning control system with surveying amount of recovery valve piece, the above-mentioned deficiency that can not effectively measure actual stretch-draw amount of recovery existing to solve prior art.
The technological scheme solving the problems of the technologies described above is: a kind of automatic tensioning control system with surveying amount of recovery valve piece, comprise jack, pumping plant, between described jack, pumping plant, be also provided with and survey amount of recovery valve piece, this valve piece comprises valve body, on valve body, be respectively equipped with filler opening, return opening, oil outlet, described oil outlet connects the hydraulic oil input end of jack, and return opening connects the hydraulic oil output terminal of jack; On the oil circuit of return opening, oil outlet, be separately installed with a safety valve that plays safety protection effect, be also separately installed with a pressure transducer of measuring each hydraulic fluid port pressure; Described valve body is also provided with aperture a, aperture b, aperture c, aperture d between the oil circuit of return opening, oil outlet, wherein aperture a is communicated with the oil circuit of filler opening, aperture b, aperture c are communicated with the oil circuit of two pressure transducers respectively, aperture d is communicated with the oil sump tank of pump, this four apertures and solenoid directional control valve connection, with oil circuit control commutation and pressurize; On described oil outlet oil circuit, be also provided with aperture e, aperture f, this aperture e, aperture f are connected with the slow unloading valve of small flow, and aperture f is communicated with the oil sump tank of pumping plant.
Further technological scheme of the present invention is: the parameter of the described slow unloading valve of small flow is off-load flow 0.02L/min to 1L/min.
Owing to adopting said structure, the automatic tensioning control system of the present invention's band survey amount of recovery valve piece compared with prior art, has following beneficial effect:
1. can accurately measure actual stretch-draw amount of recovery:
Because being also provided with between jack, pumping plant, the present invention surveys amount of recovery valve piece, on the valve body of this valve piece, be respectively equipped with filler opening, return opening, oil outlet, on the oil circuit of return opening, oil outlet, be separately installed with a safety valve, be also separately installed with a pressure transducer; Valve body is also provided with four aperture a, b, c, d between the oil circuit of return opening, oil outlet, this four apertures and solenoid directional control valve connection; On oil outlet oil circuit, be also provided with aperture e, aperture f, this aperture e, aperture f are connected with the slow unloading valve of small flow, and aperture f is communicated with the oil sump tank of pumping plant.During work, oil enters into the aperture a of valve piece from filler opening, solenoid directional control valve work, now aperture a and aperture b connect, and aperture c and aperture d connect, and oil flows to aperture b from aperture a by solenoid directional control valve, from aperture b, flow to oil outlet, safety valve, pressure transducer and aperture e, the oil of its oil outlet flows to jack cylinder, and now, the slow unloading valve of small flow is not communicated with aperture e, aperture f; Oil return by return opening, flows to aperture c 113, safety valve, pressure transducer hole from the other end of jack cylinder, and its oil flows to aperture d oil sump tank from aperture c by solenoid directional control valve.When oil-feed arrives the oil pressure of setting, control system is controlled solenoid directional control valve return, and cut off to jack and supply oil circuit, pumping plant fuel cut-off, jack carries out pressurize by one-way valve, when pressurize reaches after scheduled time, need put and open, survey steel strand amount of recovery: while putting, solenoid directional control valve keeps original off position, control system is sent signal and is opened the slow unloading valve of small flow, the oil of oil cylinder flows to the slow unloading valve of small flow by aperture e, again by aperture f oil sump tank, the slow unloading valve off-load of its small flow flow is very little, piston resilience after steel strand resiliently deformable in oil cylinder, drive the slow backhaul of piston, until that off-load completes back piston is static, the backhaul displacement amount of this process is amount of recovery, by automatic tensioning control system, measure.Therefore, the present invention can measure actual stretch-draw amount of recovery accurately and effectively, makes tension control system meet the requirement in < < highway bridge and culvert construction technique normalizing > >.
2. put Zhang Sudu adjustable:
Because the present invention is connected with the slow unloading valve of small flow at the aperture e, the aperture f that survey amount of recovery valve piece, by the adjustable Zhang Sudu of putting of the slow unloading valve of this small flow, thereby can improve work progress quality.
3. simple in structure, cost is low, and good manufacturability is convenient to manufacture.
Below, in conjunction with the accompanying drawings and embodiments the technical characteristics of the automatic tensioning control system of the present invention's band survey amount of recovery valve piece is further described.
Accompanying drawing explanation
Fig. 1: the present invention's band is surveyed the structural representation of the automatic tensioning control system of amount of recovery valve piece,
Fig. 2: survey the structural representation of amount of recovery valve piece, wherein:
1-surveys amount of recovery valve piece,
11-valve body,
111-aperture a, 112-aperture b, 113-aperture c, 114-aperture d, 115-aperture e,
116-aperture f, 117-filler opening, 118-return opening, 119-oil outlet,
12-safety valve, 13-pressure transducer, 14-solenoid directional control valve, the slow unloading valve of 15-small flow,
2-jack, 3-pumping plant.
Embodiment
Embodiment one:
Disclosed in Fig. 1～Fig. 2 is a kind of automatic tensioning control system with surveying amount of recovery valve piece, comprise jack 2, pumping plant 3, between described jack 2, pumping plant 3, be also provided with and survey amount of recovery valve piece 1, this valve piece comprises valve body 11, on valve body 11, be respectively equipped with filler opening 117, return opening 118, oil outlet 119, described oil outlet 119 connects the hydraulic oil input end of jack 2, and return opening 118 connects the hydraulic oil output terminal of jack 2; On the oil circuit of return opening 118, oil outlet 119, be separately installed with a safety valve 12 that plays safety protection effect, be also separately installed with a pressure transducer 13 of measuring each hydraulic fluid port pressure; Described valve body 11 is also provided with aperture a 111, aperture b 112, aperture c 113, aperture d 114 between the oil circuit of return opening 118, oil outlet 119, wherein aperture a 111 is communicated with the oil circuit of filler opening 117, aperture b 112, aperture c 113 are communicated with the oil circuit of two pressure transducers respectively, aperture d 114 is communicated with the oil sump tank of pumping plant 3, these four apertures and solenoid directional control valve 14 connections, with oil circuit control commutation and pressurize; On described oil outlet 119 oil circuits, be also provided with aperture e 115, aperture f 116, this aperture e 115, aperture f 116 are connected with the slow unloading valve 15 of small flow, and aperture f 116 is communicated with the oil sump tank of pumping plant 3.The parameter of the slow unloading valve 15 of described small flow is off-load flow 0.02L/min to 1L/min.
Working principle of the present invention:
1. after pumping plant work, oil enters into the aperture a 111 of valve piece from filler opening 117;
2. tension control system is controlled solenoid directional control valve work, now aperture a 111 connects with aperture b 112, aperture c 113 and aperture d 114 connect, now oil flows to aperture b 112 from aperture a 111 by solenoid directional control valve, from aperture b 112, flow to oil outlet 119, safety valve 2, pressure transducer 3 and aperture e 115, the oil of its oil outlet 119 flows to jack cylinder, aperture e 115 is connected by the slow unloading valve 15 of small flow with aperture f 116, now, the slow unloading valve 15 of small flow is not communicated with aperture e 115, aperture f 116; Oil return by return opening 118, flows to aperture c 113, safety valve 2, pressure transducer 3 holes from the other end of jack cylinder, and its oil flows to aperture d 114 oil sump tanks from aperture c 113 by solenoid directional control valve.
3. when oil-feed arrives the oil pressure of setting, control system is controlled solenoid directional control valve return, and cut off to jack and supply oil circuit, pumping plant fuel cut-off, jack carries out pressurize by one-way valve;
4. when pressurize reaches after scheduled time, need put and open, survey steel strand amount of recovery:
While putting, solenoid directional control valve keeps original off position, control system is sent signal and is opened the slow unloading valve 15 of small flow, the oil of oil cylinder flows to the slow unloading valve 15 of small flow by aperture e 115, again by the fuel tank of 116 times pumping plants 3 of aperture f, the slow unloading valve 15 off-load flows of its small flow are very little, piston resilience after steel strand resiliently deformable in oil cylinder, drive the slow backhaul of piston, until that off-load completes back piston is static, the backhaul displacement amount of this process is amount of recovery, by automatic tensioning control system, measures.
Claims (2)
1. one kind with the automatic tensioning control system of surveying amount of recovery valve piece, comprise jack (2), pumping plant (3), it is characterized in that: between described jack (2), pumping plant (3), be also provided with and survey amount of recovery valve piece (1), this valve piece comprises valve body (11), on valve body (11), be respectively equipped with filler opening (117), return opening (118), oil outlet (119), described oil outlet (119) connects the hydraulic oil input end of jack (2), and return opening (118) connects the hydraulic oil output terminal of jack (2); On the oil circuit of return opening (118), oil outlet (119), be separately installed with a safety valve (12) that plays safety protection effect, be also separately installed with a pressure transducer (13) of measuring each hydraulic fluid port pressure; Described valve body (11) is also provided with aperture a(111 between the oil circuit of return opening (118), oil outlet (119)), aperture b(112), aperture c (113), aperture d(114), aperture a(111 wherein) be communicated with the oil circuit of filler opening (117), aperture b(112), aperture c(113) be communicated with the oil circuit of two pressure transducers respectively, aperture d(114) be communicated with the oil sump tank of pumping plant (3), these four apertures and solenoid directional control valve (14) connection, with oil circuit control commutation and pressurize; On described oil outlet (119) oil circuit, be also provided with aperture e(115), aperture f(116), this aperture e(115), aperture f(116) be connected aperture f(116 with the slow unloading valve of small flow (15)) be communicated with the oil sump tank of pumping plant (3).
2. band according to claim 1 is surveyed the automatic tensioning control system of amount of recovery valve piece, it is characterized in that: the parameter of the slow unloading valve of described small flow (15) is off-load flow 0.02L/min to 1L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174010.7A CN103953600B (en) | 2014-04-28 | 2014-04-28 | Band is surveyed the automatic tensioning control system of amount of recovery valve piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174010.7A CN103953600B (en) | 2014-04-28 | 2014-04-28 | Band is surveyed the automatic tensioning control system of amount of recovery valve piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953600A true CN103953600A (en) | 2014-07-30 |
| CN103953600B CN103953600B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410174010.7A Active CN103953600B (en) | 2014-04-28 | 2014-04-28 | Band is surveyed the automatic tensioning control system of amount of recovery valve piece |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099447A (en) * | 1976-09-20 | 1978-07-11 | Ada Pumps, Inc. | Hydraulically operated oil well pump jack |
| CN202579378U (en) * | 2011-12-30 | 2012-12-05 | 柳州泰姆预应力机械有限公司 | Intelligent tensioning system |
| CN203112408U (en) * | 2013-01-28 | 2013-08-07 | 重庆长江预应力有限公司 | Hydraulic system for tensioning jack |
| CN203926194U (en) * | 2014-04-28 | 2014-11-05 | 柳州市建桥预应力智能设备有限公司 | Band is surveyed the automatic tensioning control system of amount of recovery valve piece |
-
2014
- 2014-04-28 CN CN201410174010.7A patent/CN103953600B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099447A (en) * | 1976-09-20 | 1978-07-11 | Ada Pumps, Inc. | Hydraulically operated oil well pump jack |
| CN202579378U (en) * | 2011-12-30 | 2012-12-05 | 柳州泰姆预应力机械有限公司 | Intelligent tensioning system |
| CN203112408U (en) * | 2013-01-28 | 2013-08-07 | 重庆长江预应力有限公司 | Hydraulic system for tensioning jack |
| CN203926194U (en) * | 2014-04-28 | 2014-11-05 | 柳州市建桥预应力智能设备有限公司 | Band is surveyed the automatic tensioning control system of amount of recovery valve piece |
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| Publication number | Publication date |
|---|---|
| CN103953600B (en) | 2016-05-25 |
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