CN202579378U - Intelligent tensioning system - Google Patents
Intelligent tensioning system Download PDFInfo
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- CN202579378U CN202579378U CN 201120566222 CN201120566222U CN202579378U CN 202579378 U CN202579378 U CN 202579378U CN 201120566222 CN201120566222 CN 201120566222 CN 201120566222 U CN201120566222 U CN 201120566222U CN 202579378 U CN202579378 U CN 202579378U
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- Prior art keywords
- pressure
- oil
- valve
- ultrahigh pressure
- draw
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Abstract
Provides an intelligent tensioning system used in prestress construction. The intelligent tensioning system is characterized by comprising at least two high-pressure pumps, a high-pressure tensioning oil channel and a low-pressure tensioning oil channel. One high-pressure pump is used for carry out high-pressure tension for a lifting jack. The other high-pressure pump is used for carry out low-pressure tension for the lifting jack. The high-pressure tensioning oil channel is provided with a combined valve which is used for supplying high-pressure tensioning pressure oil for the lifting jack. The low-pressure tensioning oil channel is provided with a three-position four-way solenoid valve which is used for supplying oil for a return cavity and for a low-pressure tensioning double-pump. The combined valve is provided with a check valve. When a first safety valve overflows, the check valve abuts against and seals an oil mouth of the first safety valve. A check valve is disposed on an oil channel communicated with the three-position four-way solenoid valve, and the check valve abuts against and seals an oil mouth of a second safety valve when the second safety valve overflows. The intelligent tensioning system has the advantages that flow capacity of a hydraulic control system can be effectively controlled through adjustment of split flow of independent oil channels. Large flow capacity can be achieved in a low-pressure state. The intelligent tensioning system can control pressure to achieve low-speed small flow capacity when the pressure is near an ultrahigh pressure which needs to be controlled. Therefore, the intelligent tensioning system facilitates accurate control to oil pressure in an ultrahigh pressure state.
Description
Technical field
The utility model relates to a kind of tensioning equipment that in pre-stress construction, uses, and particularly relates to a kind of intelligent tensioning system.
Background technique
The tensioning system that adopts in the construction at present, owing to be to use the ultrahigh pressure oil circuit, thereby just adopt a pump that total system is controled; Owing to adopt single pump list oil-way system; Flow size to Superhigh Pressure Hydraulic System is difficult to accurate adjusting, and old method all has manual control because of stretching construction, and construction quality receives operator's emotion influence easily; And the stretch-draw original record of can't browsing is checked, and is prone to cause the hidden danger of the core work content of prestress engineering; The utility model can effectively cooperate intelligent stretch-draw control system to realize the accurate control of stretch-draw.
The model utility content
The purpose of the utility model just provides the rising or falling speed speed of a kind of flow size that can effectively control Superhigh Pressure Hydraulic System and oil pressure, is beneficial to the precisely intelligent tensioning system of control of ultrahigh pressure state oil pressure.
The solution of the utility model is such: have two high-pressure service pumps at least, one of them pump is used for jack is carried out ultrahigh pressure stretch-draw master fuel feeding, and another pump is used for jack is carried out ultrahigh pressure stretch-draw auxiliary feed-oil; Main fuel feeding has combined control valve in the road, and being used for provides ultrahigh pressure stretch-draw pressure oil to jack; Have three position four-way electromagnetic valve in the auxiliary feed-oil oil circuit, can be used for to backhaul chamber fuel feeding with provide ultrahigh pressure stretch-draw to assist the double pump fuel feeding; In the described combined control valve one-way valve is arranged, cooperate, can work the lotus pressurize effect of holding when reaching pilot pressure with one-way valve; The stretch-draw master fuel feeding first pump mechanical safety valve can safe overflow can't up boost system pressure when surpassing the oil pressure of security settings again; Second pump is the auxiliary feed-oil road; Described three position four-way electromagnetic valve is the H type; Be communicated with stretch-draw master fuel feeding road, the auxiliary feed-oil road forms the loop fuel tank that refluxes automatically when the three position four-way electromagnetic valve no electric circuit, and at this moment the super high pressure oil on stretch-draw master fuel feeding road makes one-way valve this ultrahigh pressure oil circuit of sealing that works; Second pump relief valve can safe overflow can't up boost back haul system pressure when surpassing the oil pressure of security settings again.
Described high-pressure service pump is to adopt single pump head multichannel output superpressure pump, can be according to the operating mode needs, oil pressure during near the control point the unnecessary oil circuit of shunting flow back to fuel tank, the oil pressure rate of climb is slowed down, be beneficial to precisely control the oil pressure of ultrahigh pressure.。
For increasing security insurance, the assurance system normally uses, and in jack ultrahigh pressure stretch-draw oil circuit, is provided with two pressure transducers, and two pressure transducers are different pressure settings.
In the jack tension oil circuit, be provided with the off-load throttle valve, the oil outlet of described off-load throttle valve is connected to ultrahigh pressure stretch-draw chamber off-load ball valve, and the oil outlet of ultrahigh pressure stretch-draw chamber off-load ball valve is communicated with fuel tank.
In the jack tension oil circuit, be provided with the ultrahigh pressure ball valve, the oil outlet of ultrahigh pressure ball valve is communicated with fuel tank.
The utility model has the advantages that the bad inefficacy of any one tunnel super high pressure oil path loss; Other road binders Lu Junke replaces it to use as the ultrahigh pressure oil circuit, through to the shunting of above-mentioned each independent oil path what, regulate the flow of fluid; When fully with one road independent oil path fuel tank is returned in shunting fully the time; This road binders flows out when promptly returning fuel tank and not being with pressure from pump head, and the non-return valve of this oil circuit is returned back to top by the fluid of other oil circuit ultrahigh pressure and shuts the one-way valve valve port at this oil circuit, breaks off and being connected of other oil circuit; Not by the unified again one tunnel big oil circuit fuel feeding that accumulates of bleed off circuit; This combination of native system can effectively be controlled the flow size of Superhigh Pressure Hydraulic System easily through regulating the shunting of each independent oil path, makes low-pressure state flow greatly; Neutralize by force near the ultrahigh pressure time control of need control and to boost at a slow speed, be beneficial to the accurate control of ultrahigh pressure state oil pressure for small flow.
Description of drawings
Accompanying drawing is the embodiment of the utility model.
Accompanying drawing 1 is the hydraulic system principle figure of the utility model.
Accompanying drawing 2 is the slow structural representations that fall unloading valve 16 of ultrahigh pressure.
Accompanying drawing 3 is that the F of accompanying drawing 2 is to view.
Accompanying drawing 4 is plan views of accompanying drawing 2.
Embodiment
In the present embodiment each parts detailed as follows: 1, first pump, 2, second pump, 3, second pump installation valve, 4, three position four-way electromagnetic valve, 5, unloading valve; 6, backhaul pressure gauge, 7, first pressure transducer, 8, second pressure transducer, 9, one-way valve; 10, displacement transducer, 11, jack, 12, the stretch-draw pressure gauge, 13, combined control valve; 14, the first ultrahigh pressure ball valve, 15, the second ultrahigh pressure ball valve, 16, the slow unloading valve, 17, the first pump mechanical safety valve of falling of ultrahigh pressure; 18, valve seat, 19, plug, 20, big plug, 21, oil outlet.
The utility model has two high-pressure service pumps at least, and one of them pump is used for jack is carried out ultrahigh pressure stretch-draw master fuel feeding, and another pump is used for jack is carried out ultrahigh pressure stretch-draw auxiliary feed-oil; Main fuel feeding has combined control valve 13 in the road, and being used for provides ultrahigh pressure stretch-draw pressure oil to jack; Have three position four-way electromagnetic valve 4 in the auxiliary feed-oil oil circuit, can be used for to backhaul chamber fuel feeding with provide ultrahigh pressure stretch-draw to assist the double pump fuel feeding; In the described combined control valve 13 one-way valve is arranged, cooperate, can work the lotus pressurize effect of holding when reaching pilot pressure with one-way valve 9; The stretch-draw master fuel feeding first pump mechanical safety valve 17 can safe overflow can't up boost system pressure when surpassing the oil pressure of security settings again; Second pump is the auxiliary feed-oil road; Described three position four-way electromagnetic valve 4 is the H type; Be communicated with stretch-draw master fuel feeding road, the auxiliary feed-oil road forms the loop fuel tank that refluxes automatically when three position four-way electromagnetic valve 4 no electric circuits, and at this moment the super high pressure oil on stretch-draw master fuel feeding road makes one-way valve 9 this ultrahigh pressure oil circuit of sealing that works; Second pump relief valve 3 can safe overflow can't up boost back haul system pressure when surpassing the oil pressure of security settings again.
Described superpressure pump is to adopt single pump head multichannel output superpressure pump.
For increasing security insurance, the assurance system normally uses, and is provided with two pressure transducers in the described jack ultrahigh pressure stretch-draw oil circuit, and two pressure transducers are different pressure settings.
In jack ultrahigh pressure stretch-draw oil circuit, be provided with the second ultrahigh pressure ball valve 15, the oil outlet of the described second ultrahigh pressure ball valve 15 is connected to the slow unloading valve 16 that falls of ultrahigh pressure, and the slow oil outlet that falls unloading valve 16 of ultrahigh pressure is communicated with fuel tank.
The oil outlet that in jack ultrahigh pressure stretch-draw oil circuit, is provided with the first ultrahigh pressure ball valve, 14, the first ultrahigh pressure ball valves 14 is communicated with fuel tank.
Ultrahigh pressure is slow, and to fall unloading valve 16 be in the filler opening of valve seat, to have thread, and plug 19 cooperates with thread and gets lodged in the valve seat 18, plug 19 one proper to filler opening, and the other end of plug 19 is over against oil outlet 21; Described oil outlet 21 is the through hole on the big plug 20, and described big plug 20 is to be fixed on the valve seat 18 with thread, and the termination of big plug 20 is the oil outlet ends that withstand on plug 19; The length of described plug 19 is 10-20mm; Described plug 19 is-plug.After the second ultrahigh pressure ball valve 15 was opened, the pressure oil of ultrahigh pressure can the slow off-load along the slit of plug.
The working procedure of present embodiment is:
1, stretching process:
The stretch-draw leading portion needs big flow work, and therefore first pump 1 and second pump 2 are worked simultaneously, to guarantee that can stretch out piston fast when the low pressure carries out stretch-draw; At oil pressure during near the pressure control breakpoint; Obtain fuel injection pressure signal through first pressure transducer 7, the oil circuit of second pump 2 is cut off in the switching-over of control three position four-way electromagnetic valve 4, three position four-way electromagnetic valve for the H type when cutting off the power supply fluid automatically at this valve flow oil sump tank; Because the oil of second pump 2 is not participated in work; Therefore the working flow of jack reduces, and boosts at a slow speed, is beneficial to when controlling to the pressure breakpoint more accurately and breaks off.
2, off-load process:
The second ultrahigh pressure ball valve 15 electric, make the pressure oil of jack flow to that ultrahigh pressure is slow to fall unloading valve 16, carry out slow step-down off-load; Reduce hydraulic shock; When pressure unloading reached low pressure, the first ultrahigh pressure ball valve 14 got electric, and pressure oil flows back to fuel tank through the first ultrahigh pressure ball valve 14.
3, backhaul process:
Start three position four-way electromagnetic valve 4 to the backward position, high pressure oil gets into the backhaul oil pocket of jack, and jack piston 5 backhauls are shunk, and the oil of jack high pressure high-voltage oil cavity flows back to fuel tank through the first ultrahigh pressure ball valve 14, accomplishes a work cycle.
Two pressure transducer working procedure are following: when first pressure transducer is set to 45MPa; When this pressure transducer inefficacy or other reason are damaged; In the time of can not effectively providing control signal, oil circuit pressure continues danger and boosts, and at this moment second pressure transducer is provided with higher than first pressure transducer; Security insurance setting for 46MPa; Play security insurance and can continue the use of normally assurance system, can be used as first pressure transducer of prompting warning simultaneously and damage, fully play the redundant safety effect of safety.
Claims (8)
1. an intelligent tensioning system is characterized in that having at least two superpressure pumps, and one of them pump is used for jack is carried out ultrahigh pressure stretch-draw master fuel feeding, and another pump is used for jack is carried out ultrahigh pressure stretch-draw auxiliary feed-oil; Have combined control valve (13) in the main fuel feeding road, be used for ultrahigh pressure stretch-draw pressure oil being provided to jack; Have three position four-way electromagnetic valve (4) in the auxiliary feed-oil oil circuit, can be used for to backhaul chamber fuel feeding with provide ultrahigh pressure stretch-draw to assist the double pump fuel feeding; Described combined control valve has one-way valve in (13), cooperates with one-way valve (9), can work the lotus pressurize effect of holding when reaching pilot pressure; The stretch-draw master fuel feeding first pump mechanical safety valve (17) can safe overflow can't up boost system pressure when surpassing the oil pressure of security settings again; Second pump is the auxiliary feed-oil road; Described three position four-way electromagnetic valve (4) is the H type; Be communicated with stretch-draw master fuel feeding road; The auxiliary feed-oil road forms the loop fuel tank that refluxes automatically when three position four-way electromagnetic valve (4) no electric circuit, and at this moment the super high pressure oil on stretch-draw master fuel feeding road makes one-way valve (9) this ultrahigh pressure oil circuit of sealing that works; Second pump relief valve (3) can safe overflow can't up boost back haul system pressure when surpassing the oil pressure of security settings again.
2. intelligent tensioning system according to claim 1 is characterized in that described superpressure pump is to adopt single pump head multichannel independently to export superpressure pump.
3. intelligent tensioning system according to claim 1 is characterized in that in jack ultrahigh pressure stretch-draw oil circuit, being provided with two pressure transducers, and two pressure transducers are different pressure settings.
4. according to claim 1 or 3 described intelligent tensioning systems; It is characterized in that in jack ultrahigh pressure stretch-draw oil circuit, being provided with the second ultrahigh pressure ball valve (15); The oil outlet of the described second ultrahigh pressure ball valve (15) is connected to the slow unloading valve (16) that falls of ultrahigh pressure stretch-draw chamber superelevation, and the superelevation slow oil outlet that falls unloading valve (16) in ultrahigh pressure stretch-draw chamber is communicated with fuel tank.
5. according to claim 1 or 3 described intelligent tensioning systems, it is characterized in that in jack ultrahigh pressure stretch-draw oil circuit, being provided with the first ultrahigh pressure ball valve (14), the oil outlet of the first ultrahigh pressure ball valve (14) is communicated with fuel tank.
6. intelligent tensioning system according to claim 4; It is characterized in that slow to fall unloading valve (16) be in the filler opening of valve seat, to have thread to described ultrahigh pressure; Plug (19) cooperates with thread and gets lodged in the valve seat (18); One of plug (19) is rectified filler opening, and the other end of plug (19) is over against oil outlet (21).
7. intelligent tensioning system according to claim 6; It is characterized in that described oil outlet (21) is the through hole on the big plug (20); Described big plug (20) is to be fixed on the valve seat (18) with thread, and the termination of big plug (20) is the oil outlet end that withstands on plug (19).
8. intelligent tensioning system according to claim 7, the length that it is characterized in that described plug (19) is 10-20mm; Described plug (19) is the plug of 3-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120566222 CN202579378U (en) | 2011-12-30 | 2011-12-30 | Intelligent tensioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120566222 CN202579378U (en) | 2011-12-30 | 2011-12-30 | Intelligent tensioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579378U true CN202579378U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120566222 Expired - Lifetime CN202579378U (en) | 2011-12-30 | 2011-12-30 | Intelligent tensioning system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202579378U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103557202A (en) * | 2013-11-04 | 2014-02-05 | 中石化胜利油建工程有限公司 | Unloading vibration reduction method and unloading vibration reduction loop for neutral position of high-flow electro-hydraulic directional control valve |
| CN103953600A (en) * | 2014-04-28 | 2014-07-30 | 柳州市建桥预应力智能设备有限公司 | Automatic tension control system with retraction amount measurement valve block |
| CN110788987A (en) * | 2019-10-28 | 2020-02-14 | 陶汉成 | Automatic tensioning equipment for prestressed pipe pile |
| CN111075796A (en) * | 2018-10-22 | 2020-04-28 | 鹏亚机械科技（上海）有限公司 | Hydraulic braking device |
-
2011
- 2011-12-30 CN CN 201120566222 patent/CN202579378U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147399A (en) * | 2013-02-07 | 2013-06-12 | 柳州市邱姆预应力机械有限公司 | Intelligent prestressing force stretching system |
| CN103557202A (en) * | 2013-11-04 | 2014-02-05 | 中石化胜利油建工程有限公司 | Unloading vibration reduction method and unloading vibration reduction loop for neutral position of high-flow electro-hydraulic directional control valve |
| CN103953600A (en) * | 2014-04-28 | 2014-07-30 | 柳州市建桥预应力智能设备有限公司 | Automatic tension control system with retraction amount measurement valve block |
| CN103953600B (en) * | 2014-04-28 | 2016-05-25 | 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 |
| CN111075796A (en) * | 2018-10-22 | 2020-04-28 | 鹏亚机械科技（上海）有限公司 | Hydraulic braking device |
| CN110788987A (en) * | 2019-10-28 | 2020-02-14 | 陶汉成 | Automatic tensioning equipment for prestressed pipe pile |
| CN110788987B (en) * | 2019-10-28 | 2021-03-02 | 苏州艾思欧新型复合材料有限公司 | Automatic tensioning equipment for prestressed pipe pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |