CN100507286C - Hydraulic precision regulator - Google Patents
Hydraulic precision regulator Download PDFInfo
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- CN100507286C CN100507286C CNB2007101218723A CN200710121872A CN100507286C CN 100507286 C CN100507286 C CN 100507286C CN B2007101218723 A CNB2007101218723 A CN B2007101218723A CN 200710121872 A CN200710121872 A CN 200710121872A CN 100507286 C CN100507286 C CN 100507286C
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- hydraulic
- adjustable lever
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- housing
- case
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Abstract
The invention relates to a hydraulic precision regulator, which belongs to an auxiliary device of the hydraulic system and comprises a case, a regulating stem, a support and a hand wheel. The support is connected with the case at the up-down direction and the support and the case are fixed through a bolt; a sealing socket is arranged in the upper part inside the case and is fixed by a gland nut; the regulating stem is inserted into the support and the case, the upper part of the regulating stem is a thread structure and has thread fit with the support; the lower part of the regulating stem is inserted into the cavity of the case through the gland nut and the sealing socket; the top end of the regulating stem is fixedly connected with the hand wheel; an inlet is arranged at the lower end of the case and an outlet is arranged at the central side of the case. The invention has the advantages that the structure is novel and unique, and device is simple and practical; the hydraulic cylinder needs not to be reconstructed and the volume compensation purpose can be realized by arranging the invention on the pipeline between a pressure increasing valve and a hydraulic cylinder; also, the high-precision and high-stability of hydraulic loading can be realized; the invention is suitable for the stacking force standard machine, the dynamometric system and the calibrating device.
Description
Technical field
The present invention relates to a kind of hydraulic precision regulator, belong to an auxiliary device of hydraulic system, but it is different from general hydraulic element, is mainly used in superposing type force standard machine, dynamometric system and its calibrating installation, the calibrating installation of weighing system.The mechanics category that also can belong to metering field.
Background technique
By to the supercharging of oil hydraulic cylinder medium, make piston produce active force, be used widely to the hydraulic loaded mode of given object imposed load.Hydraulic loaded is stepless adjustable, and imposed load does not steadily have impact, and load range is wide, and device volume is little, in light weight, for metering dynamometry technology very important Practical significance is arranged.But metering dynamometry technical requirements power value precision height (as 0.03%～0.01% or higher), and require force value stabilization.Though hydraulic loaded can apply any one power value, after adding, load can not keep stable, and the power value will change soon, even keeps the high stability (more than 0.03%) of at several seconds zero point such short time all to be difficult to accomplish.This is a very big obstacle to hydraulic loaded in the technical application of dynamometry, and solving the hydraulic loaded stable problem is its precondition in the technical application of highi degree of accuracy dynamometry.
The unsettled reason of hydraulic loaded is generally all thought what hydraulic system leakage caused.But taking measures to solve problem from sealing has little effect.Observe by experiment and theory analysis, think that the hydraulic loaded instability is not leaked and caused under modern sealing technique has reached quite high horizontal situation, but the performance of hydraulic medium own causes that promptly performance parameter variations causes.Specifically: during loading, along with medium pressure raises, its temperature also will raise; Loading stops, and medium temperature is higher than external temperature in the throttle down, oil hydraulic cylinder, its temperature is descended to extraneous heat release.Along with medium temperature reduces, its volume will shrink, and this moment, medium was in a locking system, and system volume is constant.And hydraulic medium will be full of whole volume all the time, and at this moment its volume can not diminish, but produces substantial expansion, brings the reduction of self pressure then, causes the continuous decline of piston ouput force.The unloading situation is just in time opposite, and load stops unloading when being discharged to a certain value, and medium temperature is lower than external temperature in the cylinder, absorb heat to the external world, and the medium volume expands.Because substantial compression then appears in the constancy of volume.Pressure raises, and the piston ouput force rises.The unsettled reason of hydraulic loaded that Here it is.It is the performance decision of hydraulic medium own, the way that solves is not to eliminate thermal effect by the character that changes medium, take indemnifying measure but comply with the hydraulic medium performance characteristics, it is multiple that at present compensatory approach has flow-compensated, cubage compensation and external compensation etc., therefore, adopting which kind of structure and compensatory approach to solve hydraulic loaded stability is problem anxious to be solved.
Summary of the invention
The object of the present invention is to provide and a kind ofly can solve the hydraulic loaded stability problem and make it at the technical hydraulic precision regulator of being used of highi degree of accuracy dynamometry, it is to be contained in pressure charging valve (inlet valve) to the pipeline between the hydraulic cylinder body, seal chamber of the common composition of the pressure chamber of pipeline, hydraulic precision regulator inner chamber and oil hydraulic cylinder behind the valve, change volume in the chamber with the lifting of the adjustable lever in the hydraulic precision regulator, with the variation of compensation medium volume, thereby reach the stability of hydraulic loaded.Because the liquid compression rate is very little, its coefficient of bulk compressibility: general hydraulic oil is 5～7 * 10
-10m
2/ N.Very little volume-variation can cause bigger pressure change, therefore, just can obtain satisfied regulating effect with the hydraulic precision regulator that stature is little.
The objective of the invention is to be realized that by following technological scheme it comprises housing, adjustable lever, support and handwheel, support links to each other up and down with housing, uses bolt; The housing internal upper part is provided with sealing seat, fixes with gland nut; Adjustable lever inserts in support and the housing, and the adjustable lever first half is a worm structure, with the support screw-thread fit; The adjustable lever Lower Half is inserted in the housing chamber by gland nut, sealing seat; Adjustable lever top and handwheel are connected.
An import is established in the housing lower end, and an outlet is established in its side, middle part.
Adopt seal with O ring between sealing seat and the housing; Adopt this special seal ring sealing between sealing seat and the adjustable lever.
The diameter of adjustable lever can be
, the screw-thread fit of adjustable lever and support is of a size of M14 * 1; Adjustable lever and handwheel fixedly connected the employing nut.
All be lined with spring washer below the bolts and nuts.
Adjustable lever diameter range of the present invention is
, being used for the loading of 5T～200T, operating pressure is 0～16MPa, and regulated quantity is add 1% of load, and degree of regulation is add 0.001% of maximum load.
Design principle: handwheel and adjustable lever are direct-connected, rotate handwheel, and adjustable lever changes adjustable lever in the endoceliac insertion amount of shell by the lifting with the screw-thread fit of support, thereby changes the chamber internal volume.Housing and adjustable lever adopt reliable sealing, make motive position not produce leakage and do not make to move to creep.As required, also can realize the conversion of different-diameter regulator by changing adjustable lever, sealing seat and Sealing.
Advantage of the present invention is:
1, the novel structure uniqueness is simple and practical.
2, need not change oil hydraulic cylinder, only need on the pipeline between pressure charging valve and the oil hydraulic cylinder, to install hydraulic precision regulator of the present invention additional, just can reach the purpose of cubage compensation.
3, can reach highi degree of accuracy, the high stability of hydraulic loaded, be applicable to superposing type force standard machine, dynamometric system and its calibrating installation, the calibrating installation of weighing system.
Description of drawings
Fig. 1 is the hydraulic precision regulator structural representation.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is hydraulic precision regulator use principle figure.
Among the figure: 1. housing, 2. this special seal ring, 3.O shape circle, 4. sealing seat, 5. gland nut, 6. adjustable lever, 7. support, 8. nut, 9. handwheel, 10. bolt, 11. imports, 12. outlets, 13. pumping plants, 14. charge valves, 15. feather valves, 16. oil hydraulic cylinders.
Embodiment
Fig. 1, Figure 2 shows that and the embodiment of hydraulic precision regulator of the present invention be connected with support 7 on the top of housing 1, fixing with bolt 10; Housing 1 internal upper part is provided with sealing seat 4, and is fixing with gland nut 5; Adjustable lever 6 inserts in support 7 and the housing 1, and adjustable lever 6 first halves are worm structure, with support 7 screw-thread fit; Adjustable lever 6 Lower Halves are inserted in housing 1 chamber by gland nut 5, sealing seat 4; Adjustable lever 6 tops and handwheel 9 are connected, by rotating the lifting of handwheel drive adjustable lever.
An import 11 is established in housing 1 lower end, and an outlet 12 is established in its side, middle part.
Adopt 3 sealings of O shape circle between sealing seat 4 and the housing 1; Adopt this special seal ring 2 sealings between sealing seat 4 and the adjustable lever 6.
The diameter of adjustable lever 6 can be
, adjustable lever 6 is of a size of M14 * 1 with the screw-thread fit of support 7; Adjustable lever 6 adopts nut 8 to fixedly connected with handwheel 9.
Use principle: as shown in Figure 3, when hydraulic precision regulator used, hydraulic precision regulator import 11 was connected with charge valve 14 (inlet valve), exported 12 and was connected with the pressure chamber of oil hydraulic cylinder 16, export 12 last be for the emptying intracavity gas.The inlet/outlet joint adopts firmly the be tightly connected mode of the conical surface to sphere.Adjustable lever 6 inserts in the housing 1 by Sealing, seals employing two seals device, and to guarantee the reliability of sealing, Sealing seals with this spy of U.S. SHAMBAN company, and sealing reliable performance and frictional force are little, can avoid creeping in adjustable lever 6 liftings.Adjustable lever 6 passes through the screw thread transmission with support 7, and thread size is M14 * 1.Handwheel 9 diameters
This regulator is a manual components, is loaded to oil hydraulic cylinder 16 superchargings by charge valve 14 during use, is added to 99% when above of predetermined value, closes charge valve 14, accurately is added to required power value with regulator again.After, variation is regulated according to the power value, and it is stable that the value of exerting all one's strength keeps, and regulates by rotating handwheel 9 and solve, and sense of rotation, angular dimension, speed speed are all determined according to power value variation tendency by the people.
Claims (6)
1, a kind of hydraulic precision regulator is characterized in that: it comprises housing (1), adjustable lever (6), support (7) and handwheel (9); Described support (7) links to each other up and down with housing (1), and is fixing with bolt (10); Housing (1) internal upper part is provided with sealing seat (4), and is fixing with gland nut (5); Adjustable lever (6) inserts in support (7) and the housing (1), and adjustable lever (6) first half is a worm structure, with support (7) screw-thread fit; Adjustable lever (6) Lower Half is inserted in housing (1) chamber by gland nut (5), sealing seat (4); Adjustable lever (6) top and handwheel (9) are connected; An import (11) is established in housing (1) lower end, is connected with charge valve (14); An outlet (12) is established in side, housing (1) middle part, is connected seal chamber of the common composition of the pressure chamber of pipeline, hydraulic precision regulator inner chamber and oil hydraulic cylinder (16) behind the valve with the pressure chamber of oil hydraulic cylinder (16).
2, hydraulic precision regulator as claimed in claim 1 is characterized in that: adopt O shape circle (3) sealing between sealing seat (4) and the housing (1).
3, hydraulic precision regulator as claimed in claim 1 is characterized in that: adopt this special seal ring (2) sealing between sealing seat (4) and the adjustable lever (6).
4, hydraulic precision regulator as claimed in claim 1 is characterized in that: the diameter of adjustable lever (6) is
5, hydraulic precision regulator as claimed in claim 1 is characterized in that: adjustable lever (6) is of a size of M14 * 1 with the screw-thread fit of support (7).
6, hydraulic precision regulator as claimed in claim 1 is characterized in that: adjustable lever (6) and handwheel (9) fixedly connected employing nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101218723A CN100507286C (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101218723A CN100507286C (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101126405A CN101126405A (en) | 2008-02-20 |
| CN100507286C true CN100507286C (en) | 2009-07-01 |
Family
ID=39094510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101218723A Expired - Fee Related CN100507286C (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100507286C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008040557B4 (en) * | 2008-07-18 | 2023-06-01 | Wika Alexander Wiegand Se & Co. Kg | pressure gauge |
| CN103017976B (en) * | 2012-12-03 | 2015-01-07 | 中国航空工业集团公司北京长城计量测试技术研究所 | Backpressure balanced type liquid high pressure regulation device |
| CN109141726A (en) * | 2017-06-16 | 2019-01-04 | 大陆汽车电子(长春)有限公司 | Damper internal pressure measuring apparatus and the method for measuring damper internal pressure |
| CN115790686B (en) * | 2023-02-08 | 2023-04-18 | 天津泰正机械有限公司 | Automobile sheet metal part detection device |
| CN115824480B (en) * | 2023-02-16 | 2023-04-18 | 中感(安徽)矿山技术有限公司 | Quantitative oiling device of borehole stressmeter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119682A (en) * | 1982-04-30 | 1983-11-23 | Cam Gears Ltd | Manually controlled power assisted press |
| CN2417970Y (en) * | 1999-12-24 | 2001-02-07 | 渤海化工(集团)股份有限公司天津化工厂 | Hand-hydraulic regulation machine |
| GB2383115A (en) * | 2001-10-23 | 2003-06-18 | John Buchan | Ship safety remote controlled hydraulic valve actuation |
| CN2700621Y (en) * | 2004-04-28 | 2005-05-18 | 浙江大学 | Pure water hydraulic throttle valve capable of precisely controlling flow |
| CN201083584Y (en) * | 2007-09-17 | 2008-07-09 | 谢显奇 | Hydraulic precision regulator |
-
2007
- 2007-09-17 CN CNB2007101218723A patent/CN100507286C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2119682A (en) * | 1982-04-30 | 1983-11-23 | Cam Gears Ltd | Manually controlled power assisted press |
| CN2417970Y (en) * | 1999-12-24 | 2001-02-07 | 渤海化工(集团)股份有限公司天津化工厂 | Hand-hydraulic regulation machine |
| GB2383115A (en) * | 2001-10-23 | 2003-06-18 | John Buchan | Ship safety remote controlled hydraulic valve actuation |
| CN2700621Y (en) * | 2004-04-28 | 2005-05-18 | 浙江大学 | Pure water hydraulic throttle valve capable of precisely controlling flow |
| CN201083584Y (en) * | 2007-09-17 | 2008-07-09 | 谢显奇 | Hydraulic precision regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101126405A (en) | 2008-02-20 |
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