CN101532525A - Compact type hydraulic circuit regulator - Google Patents
Compact type hydraulic circuit regulator Download PDFInfo
- Publication number
- CN101532525A CN101532525A CN200910049483A CN200910049483A CN101532525A CN 101532525 A CN101532525 A CN 101532525A CN 200910049483 A CN200910049483 A CN 200910049483A CN 200910049483 A CN200910049483 A CN 200910049483A CN 101532525 A CN101532525 A CN 101532525A
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- oil cylinder
- decompression
- pressure
- weighing
- hydraulic circuit
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Abstract
The invention provides a compact type hydraulic circuit regulator. The regulator comprises a weighing cylinder and a decompression cylinder, wherein the weighing cylinder and the decompression cylinder are connected; pistons are arranged in the cylinders; one end of a piston rod of the weighing cylinder is connected with a bearing device; the decompression cylinder is connected with a high pressure oil tube connected with working oil circuit; the decompression cylinder is divided into a high pressure cavity and a low pressure cavity through the piston, wherein the low pressure cavity is connected with the weighing cylinder, while the high pressure cavity is connected with the high pressure oil tube; joints of the decompression cylinder and the weighing cylinder are provided with a hole respectively, and are directly connected through the holes; the high pressure oil tube is connected with the high pressure cavity of the decompression cylinder through an oil tube connector; and the bearing device is a weight tray, weights can be placed on the weight tray to apply pressure to oil fluid in the weighing cylinder. The compact type hydraulic circuit regulator is a hydraulic mechanical device, and has the advantages of reliable work, good pressure regulation performance, convenient installation and use and wide application pressure range.
Description
Technical field
The invention belongs to the hydraulic loading system field, relate to the voltage stabilizer that a kind of hydraulic loaded is used, can make the pressure of loading oil circuit keep stable in the course of the work.
Background technique
When carrying out structural test or engineering detecting, the jack load that is loaded will remain unchanged, must make the constant or amplitude of fluctuation of working oil path pressure stability in permissible range, could satisfy the requirement of scientific research precision and the requirement of detection standard like this, test result and detection data could be authentic and valid.When carrying out the low all repetition tests of civil structure anti-seismic performance, common test specimen is respectively body of wall, framework, post, cross node etc.Add vertical load simulation vertical force by hydraulic jack during test, add the effect of horizontal loading simulated earthquake by electro-hydraulic servo actuator simultaneously.Structure or member are under true geological process, vertical load can be considered no change, and in process of the test, find applying along with horizontal loading, the test specimen top produces vertical displacement, react on jack, because hydraulic oil is incompressible liquid, the power value of existing vertical hydraulic loading system is difficult to stablize, and changes the amplitude maximum up to more than 50%.Cause the reason of this problem, the one, the vertical displacement of test specimen top produces with the appearance of Horizontal displacement, and the test specimen top is along with Horizontal displacement just rises and falls; The 2nd, because the test period of single test specimen is grown (test period of a general test specimen is about half a day), leakage is arranged during oil-way system, be difficult to voltage stabilizing.
Because the civil engineering of the oil circuit variation in pressure that test specimen distortion itself causes detects and the example of scientific research and testing aspect also has a lot.For example, (1) is in engineering foundation pile static load bearing capacity slow detection, because stake top constantly sinks, stablely holds lotus and is difficult to realize, existing way is that constantly just to reach pressure for the oil circuit repairing relatively stable; (2) when the structure long term loading is tested, the general now gravity load mode that adopts, wherein directly the adaptable tonnage of gravity load mode is smaller, the test site big and certain risk is arranged; And carry out gravity when loading with lever method, shared place is bigger.Can provide very large-tonnage with the hydraulic jack loading, but, be difficult to keep long-time pressure stability because test piece deformation and oil circuit leak.More than two example explanations when carrying out specified structure test or engineering detecting, need a kind of oil circuit manostat.
Hydraulic loaded and drive system are widely used in industrial departments such as mining, metallurgical calendering, machining, electric power, hydraulic loaded can be divided into by the length of time and loads in short-term and load when growing, as long as certain pressure is provided when loading in short-term, loads when long and then will keep the stable of hydraulic system pressure the long period.The constant relatively method of existing maintenance hydraulic system pressure generally is to be communicated with accumulator on oil circuit, general accumulator is one to have the pressurized tank of energy storage air bag, link to each other with existing oil circuit, relatively simple for structure, use in various hydraulic equipments is more, but its application has certain parameter limit, promptly configuration during accumulator important affair know the working pressure and the pressure amplitude thereof of oil-way system earlier, have only the accumulator that adopts suitable parameters just can reach the effect of constant pressure, this is that its working principle can be derived by equation of state of gas by the decision of the working principle of accumulator.And in civil engineering structure test room, the employed jack kind of day-to-day test is more, and the jack from several tons to the hundreds of ton all more frequently uses, the working pressure of jack from several MPas to tens MPas.Be difficult to voltage stabilizing problem with several accumulators oil-way system with regard to all kinds of structural test can be solved the time.In addition, accumulator costs an arm and a leg, and homemade accumulator does not still have the ultrahigh pressure product.At home in the structural test chamber, the accumulator that the customization used arranged is as the vertical force stable-pressure device, put into practice through day-to-day test, find that using effect is not fine, accumulator can play the effect of " peak load shifting " to the variation of oil circuit pressure, but on its working principle, can not accomplish absolute voltage stabilizing, the scope to the working pressure value has certain requirement simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of compact type hydraulic circuit regulator, its compact structure, oil circuit frictional resistance are littler, have better voltage stabilizing, stronger applicability, to overcome the above-mentioned defective of prior art.
For reaching above purpose, solution of the present invention is:
A kind of compact type hydraulic circuit regulator, it comprises weighing oil cylinder, decompression oil cylinder, weighing oil cylinder is connected with the decompression oil cylinder, is equipped with piston in the oil cylinder; Piston rod one end of weighing oil cylinder is connected with load carrier; The decompression oil cylinder is connected with the high-pressure oil pipe that links to each other with working oil path.
This decompression oil cylinder is divided into hyperbaric chamber and two zones of low-pressure cavity by piston, and its low-pressure cavity links to each other with weighing oil cylinder, and hyperbaric chamber then connects high-pressure oil pipe.
The joint of this decompression oil cylinder and weighing oil cylinder all has circular hole, directly is communicated with by circular hole.
This decompression oil cylinder is a T type structure, and the piston that is mated also is T type structure; Decompression oil cylinder head " " word end is made as low-pressure cavity, and afterbody is made as hyperbaric chamber.
The piston rod of this weighing oil cylinder is a vast scale variable cross section piston.
This high-pressure oil pipe links to each other by the hyperbaric chamber of oil connection with the decompression oil cylinder.
This load carrier is a weight tray, places counterweight on it weighing oil cylinder inner fluid is exerted pressure.
It also comprises supporting drum, and it is arranged at the whole device of decompression oil cylinder supported underneath.
Owing to adopted above technological scheme, the present invention has following beneficial effect: the high-pressure oil pipe of this device is connected common hydraulic loading system (oil pump-jack loading system), in weight tray, put into the counterweight of suitable weight, when working oil path pressure changes, drive the decompression oil cylinder motion of little stroke, Chuan Lian weighing oil cylinder is carried out big stroke motion simultaneously.Because the force value of weighing oil cylinder is only relevant with the counterweight gravimetric value, the transformation ratio of decompression oil cylinder is well-determined, so can guarantee the working oil path pressure stability.Advantages such as the present invention is a hydro-mechanical unit only, has reliable operation, and voltage regulation performance is good, and is easy to install, and the applying pressure scope is wide.
Description of drawings
Fig. 1 is the plan view of compact type hydraulic circuit regulator of the present invention.
Label declaration in the accompanying drawing:
1-counterweight; 2-weight tray; 3-weighing oil cylinder; 31-piston rod: 4-decompression oil cylinder; 41-hyperbaric chamber; 42-low-pressure cavity; 5-supporting drum; 6-high-pressure oil pipe;
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
See also shown in Figure 1ly, a kind of hydraulic circuit regulator of the present invention comprises a supporting drum 5, and a decompression oil cylinder 4 is installed on the supporting drum 5, is connected and installed with a weighing oil cylinder 3 by welding or bolt on the decompression oil cylinder 4.The hyperbaric chamber 41 of decompression oil cylinder is connected with a high-pressure oil pipe 6 by oil connection, the low-pressure cavity 42 of decompression oil cylinder is connected with weighing oil cylinder 3 by circular hole, the piston rod 31 of weighing oil cylinder is upwards fixed with weight tray 2 by welding or big nut and is fixedly connected, and lays some counterweights 1 on the weight tray 2.
The using method of compact type hydraulic circuit regulator of the present invention is: high-pressure oil pipe 6 is linked to each other with the loading working oil path by connecting valve, on weight tray 2, put into the counterweight 1 (weight of counterweight is by working oil path pressure decision, working oil path pressure can by the oil pressure gauge reading) of suitable weight.Oil pressure in the high-pressure oil pipe 6 is identical with the loading oil circuit oil pressure, also identical with the oil pressure of decompression oil cylinder 4 hyperbaric chambers 41, because the piston in the decompression oil cylinder 4 is a vast scale variable cross section piston, low oil pressure in oil cylinder 4 low-pressure cavity 42 obtains reducing pressure, the interior oil pressure of oil pressure in the low-pressure cavity 42 and weighing oil cylinder 3 is identical, and the oil pressure in the weighing oil cylinder 3 passes through the motion maintenance loading working oil path pressure stability of decompression oil cylinder 4 and weighing oil cylinder 3 inner carriers by the Weight control of counterweight 1 during work.
When the oil pressure loading system is worked, because of test specimen displacement or oil circuit leakage, because the incompressibility of hydraulic oil, pressure in the pressurized oil system will change, the voltage stabilizer that insert this moment will produce action, and the piston of decompression oil cylinder 4 and weighing oil cylinder 3 produces interlock, and keep intrasystem oil pressure stable, when wherein pressure became big, the piston of decompression oil cylinder and weighing oil cylinder moved upward by the neutral position; Otherwise move downward.The function of decompression oil cylinder 4 is that (pressure is big for the little stroke motion of realization high pressure, piston moves few) (pressure is little with the big stroke motion of low-pressure, piston moves many) conversion, when the liquid oil volume in the loading oil circuit changes, drive 4 motions of decompression oil cylinder, decompression oil cylinder 4 is converted to the big stroke motion of low-pressure with the little stroke motion of high pressure, the pressure size of low-pressure cavity 42 is determined by weighing counterweight 1 and weighing oil cylinder 3, again because the Pressure reducing ratio of decompression oil cylinder 4 is a determined value, thereby guarantee the high-pressure oil passage constant pressure, promptly loading oil circuit pressure can keep stable.The purpose that supporting drum is set is in order to support the weight of whole device.
Manostat of the present invention to the requirement of pressure stability, guarantees the force value precision in whole loading procedure, and has the wide advantage of applying pressure scope when can satisfy civil engineering test and engineering detecting.
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiments, and needn't pass through performing creative labour being applied among other embodiments in the General Principle of this explanation.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (8)
1, a kind of compact type hydraulic circuit regulator is characterized in that: it comprises weighing oil cylinder, decompression oil cylinder, and weighing oil cylinder is connected with the decompression oil cylinder, is equipped with piston in the oil cylinder; Piston rod one end of weighing oil cylinder is connected with load carrier; The decompression oil cylinder is connected with the high-pressure oil pipe that links to each other with working oil path.
2, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: this decompression oil cylinder is divided into hyperbaric chamber and two zones of low-pressure cavity by piston, and its low-pressure cavity links to each other with weighing oil cylinder, and hyperbaric chamber then connects high-pressure oil pipe.
3, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: the joint of this decompression oil cylinder and weighing oil cylinder all has circular hole, directly is communicated with by circular hole.
4, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: this decompression oil cylinder is a T type structure, and the piston that is mated also is T type structure; Decompression oil cylinder head " " word end is made as low-pressure cavity, and afterbody is made as hyperbaric chamber.
5, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: the piston rod of this weighing oil cylinder is a vast scale variable cross section piston.
6, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: this high-pressure oil pipe links to each other by the hyperbaric chamber of oil connection with the decompression oil cylinder.
7, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: this load carrier is a weight tray, places counterweight on it weighing oil cylinder inner fluid is exerted pressure.
8, compact type hydraulic circuit regulator as claimed in claim 1 is characterized in that: it also comprises supporting drum, and it is arranged at the whole device of decompression oil cylinder supported underneath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049483A CN101532525A (en) | 2009-04-17 | 2009-04-17 | Compact type hydraulic circuit regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910049483A CN101532525A (en) | 2009-04-17 | 2009-04-17 | Compact type hydraulic circuit regulator |
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| Publication Number | Publication Date |
|---|---|
| CN101532525A true CN101532525A (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910049483A Pending CN101532525A (en) | 2009-04-17 | 2009-04-17 | Compact type hydraulic circuit regulator |
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| CN (1) | CN101532525A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998030A (en) * | 2012-11-29 | 2013-03-27 | 山西潞安环保能源开发股份有限公司 | Rock mass stress monitoring device |
| CN106151158A (en) * | 2015-03-26 | 2016-11-23 | 北京航天试验技术研究所 | A kind of voltage stabilizing output cylinder |
| CN106769491A (en) * | 2017-01-17 | 2017-05-31 | 东莞市嘉仪自动化设备科技有限公司 | Glass pressure in the bottle test machine |
| CN108443244A (en) * | 2018-05-16 | 2018-08-24 | 泸州职业技术学院 | A kind of electronic control pressure reducing system |
-
2009
- 2009-04-17 CN CN200910049483A patent/CN101532525A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998030A (en) * | 2012-11-29 | 2013-03-27 | 山西潞安环保能源开发股份有限公司 | Rock mass stress monitoring device |
| CN106151158A (en) * | 2015-03-26 | 2016-11-23 | 北京航天试验技术研究所 | A kind of voltage stabilizing output cylinder |
| CN106769491A (en) * | 2017-01-17 | 2017-05-31 | 东莞市嘉仪自动化设备科技有限公司 | Glass pressure in the bottle test machine |
| CN108443244A (en) * | 2018-05-16 | 2018-08-24 | 泸州职业技术学院 | A kind of electronic control pressure reducing system |
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Open date: 20090916 |