CN201083584Y - Hydraulic precision regulator - Google Patents
Hydraulic precision regulator Download PDFInfo
- Publication number
- CN201083584Y CN201083584Y CNU200720173157XU CN200720173157U CN201083584Y CN 201083584 Y CN201083584 Y CN 201083584Y CN U200720173157X U CNU200720173157X U CN U200720173157XU CN 200720173157 U CN200720173157 U CN 200720173157U CN 201083584 Y CN201083584 Y CN 201083584Y
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- Prior art keywords
- hydraulic
- adjuster bar
- shell
- housing
- precision regulator
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Abstract
The utility model relates to a hydraulic pressure fine adjustor which belongs to an assistance device of a hydraulic system. The utility model comprises a shell, an adjusting pole, a bracket and a hand wheel, wherein, the bracket and the shell are connected from up to down and are fixed by bolts; a sealing base is arranged on the upper part in the shell and is fixed by a tightening screw; the adjusting pole is inserted into the bracket and the shell and the upper half part of the adjusting pole has a screw structure and is in fit with the bracket screw; the lower part of the adjusting pole is inserted into the shell cavity via a tightening screw and a sealing base; the top end of the adjusting pole is connected and fixed to the hand wheel; the lower end of the shell is provided with an inlet and the side of the middle part of the shell is provided with an outlet. The utility model has the advantages that the structure is novel and unique, and simple and practical; the aim of cubage compensation can be achieved only by arranging the utility model between the booster valve and the hydraulic cylinder without altering the hydraulic cylinder; and the high precision, high stability of hydraulic loading can be achieved and the hydraulic pressure fine adjustor is suitable for an overlap force standard machine, the force measuring system and the calibrating device of the same machine.
Description
Technical field
The utility model relates to a kind of hydraulic precision regulator, belong to a servicing unit of hydraulic system, but it is different from general Hydraulic Elements, 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 technology
By to the supercharging of hydraulic cylinder medium, make piston produce acting 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 requirement 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 high precision 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 theoretical analysis, think that the hydraulic loaded instability is not leaked and caused under modern Sealing Technology 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 ambient temperature in the valve-off, 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 closed 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 power output.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 ambient 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 power output 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.
The utility model content
The purpose of this utility model is to provide a kind of and can solves the hydraulic loaded stability problem and make it at the technical hydraulic precision regulator of being used of high precision dynamometry, it is to be contained in pressure charging valve (admission 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 hydraulic cylinder behind the valve, change volume in the chamber with the lifting of the adjuster bar 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 volume 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 purpose of this utility model is realized that by following technical scheme it comprises housing, adjuster bar, support and handwheel, and support links to each other up and down with housing, uses bolt; The housing internal upper part is provided with sealing socket, fixes with gland nut; Adjuster bar inserts in support and the housing, and the adjuster bar first half is a helicitic texture, with the support threaded engagement; The adjuster bar Lower Half is inserted in the housing chamber by gland nut, sealing socket; Adjuster bar 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 socket and the housing; Adopt this special O-ring seal sealing between sealing socket and the adjuster bar.
The diameter of adjuster bar can be 6～ 10mm; The threaded engagement of adjuster bar and support is of a size of M14 * 1; Adjuster bar and handwheel fixedly connected the employing nut.
All be lined with spring washer below the bolts and nuts.
Adjuster bar diameter range of the present utility model is 6～ 10mm, is used for the loading of 5T～200T, and 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 concept: handwheel and adjuster bar are direct-connected, rotate handwheel, and adjuster bar changes adjuster bar in the endoceliac insertion amount of shell by the lifting with the threaded engagement of support, thereby changes the chamber internal volume.Housing and adjuster bar adopt positiver 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 adjuster bar, sealing socket and seal.
The utility model has the advantages that:
1, the novel structure uniqueness is simple and practical.
2, need not change hydraulic cylinder, only need on the pipeline between pressure charging valve and the hydraulic cylinder, to install the utility model hydraulic precision regulator additional, just can reach the purpose of cubage compensation.
3, can reach high precision, 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 view of Fig. 1.
Fig. 3 is hydraulic precision regulator use principle figure.
Among the figure: 1. housing, 2. this special O-ring seal, 3.O shape circle, 4. sealing socket, 5. gland nut, 6. adjuster bar, 7. support, 8. nut, 9. handwheel, 10. bolt, 11. imports, 12. outlets, 13. pumping plants, 14. charge valves, 15. unloading valves, 16. hydraulic cylinders.
Embodiment
Fig. 1, Figure 2 shows that and the embodiment of the utility model hydraulic precision regulator be connected with support 7 on the top of housing 1, fixing with bolt 10; Housing 1 internal upper part is provided with sealing socket 4, and is fixing with gland nut 5; Adjuster bar 6 inserts in support 7 and the housing 1, and adjuster bar 6 first halves are helicitic texture, with support 7 threaded engagement; Adjuster bar 6 Lower Halves are inserted in housing 1 chamber by gland nut 5, sealing socket 4; Adjuster bar 6 tops and handwheel 9 are connected, by rotating the lifting of handwheel drive adjuster bar.
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 socket 4 and the housing 1; Adopt this special O-ring seal 2 sealings between sealing socket 4 and the adjuster bar 6.
The diameter of adjuster bar 6 can be 6～ 10mm, and adjuster bar 6 is of a size of M14 * 1 with the threaded engagement of support 7; Adjuster bar 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 (admission valve), exported 12 and was connected with the pressure chamber of hydraulic cylinder 16, export 12 last be for the emptying intracavity gas.The import and export joint adopts firmly the be tightly connected mode of the conical surface to sphere.Adjuster bar 6 inserts in the housing 1 by seal, seals employing two seals device, and to guarantee the reliability of sealing, seal seals with this spy of U.S. SHAMBAN company, and sealing dependable performance and friction force are little, can avoid creeping in adjuster bar 6 liftings.Adjuster bar 6 passes through the screw thread transmission with support 7, and thread size is M14 * 1.Handwheel 9 diameter 130mm.This regulator is a manual components, is loaded to 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 rotation direction, angular dimension, speed speed are all determined according to power value variation tendency by the people.
Claims (7)
1. hydraulic precision regulator, it is characterized in that: it comprises housing (1), adjuster bar (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 socket (4), and is fixing with gland nut (5); Adjuster bar (6) inserts in support (7) and the housing (1), and adjuster bar (6) first half is a helicitic texture, with support (7) threaded engagement; Adjuster bar (6) Lower Half is inserted in housing (1) chamber by gland nut (5), sealing socket (4); Adjuster bar (6) top and handwheel (9) are connected.
2. hydraulic precision regulator as claimed in claim 1 is characterized in that: an import (11) is established in housing (1) lower end, and an outlet (12) is established in its side, middle part.
3. hydraulic precision regulator as claimed in claim 1 is characterized in that: adopt O shape circle (3) sealing between sealing socket (4) and the housing (1).
4. hydraulic precision regulator as claimed in claim 1 is characterized in that: adopt this special O-ring seal (2) sealing between sealing socket (4) and the adjuster bar (6).
5. hydraulic precision regulator as claimed in claim 1 is characterized in that: the diameter of adjuster bar (6) is 6～ 10mm.
6. hydraulic precision regulator as claimed in claim 1 is characterized in that: adjuster bar (6) is of a size of M14 * 1 with the threaded engagement of support (7).
7. hydraulic precision regulator as claimed in claim 1 is characterized in that: adjuster bar (6) and handwheel (9) fixedly connected employing nut (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720173157XU CN201083584Y (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720173157XU CN201083584Y (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201083584Y true CN201083584Y (en) | 2008-07-09 |
Family
ID=39626051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720173157XU Expired - Fee Related CN201083584Y (en) | 2007-09-17 | 2007-09-17 | Hydraulic precision regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201083584Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507286C (en) * | 2007-09-17 | 2009-07-01 | 谢显奇 | Hydraulic precision regulator |
-
2007
- 2007-09-17 CN CNU200720173157XU patent/CN201083584Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507286C (en) * | 2007-09-17 | 2009-07-01 | 谢显奇 | Hydraulic precision regulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080709 Termination date: 20091019 |