CN204113812U - For eliminating the device of the synchronous cumulative error of hydraulic system - Google Patents
For eliminating the device of the synchronous cumulative error of hydraulic system Download PDFInfo
- Publication number
- CN204113812U CN204113812U CN201420537649.2U CN201420537649U CN204113812U CN 204113812 U CN204113812 U CN 204113812U CN 201420537649 U CN201420537649 U CN 201420537649U CN 204113812 U CN204113812 U CN 204113812U
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- China
- Prior art keywords
- mouth
- combiner
- flow divider
- hydraulic cylinder
- valve
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- Expired - Fee Related
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- 230000001186 cumulative effect Effects 0.000 title claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 14
- 239000012530 fluid Substances 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Fluid-Pressure Circuits (AREA)
Abstract
A kind of device for eliminating the synchronous cumulative error of hydraulic system, comprise: solenoid directional control valve, flow divider-combiner, two oil hydraulic cylinders, two relief valves, the A mouth of selector valve connects flow divider-combiner A1 mouth, the B1 mouth connecting fluid cylinder pressure rodless cavity of flow divider-combiner, connect relief valve P mouth, B2 mouth connecting fluid cylinder pressure rodless cavity, connects relief valve P mouth simultaneously simultaneously, two relief valve T mouth connected tanks, selector valve B mouth connects the rod chamber of oil hydraulic cylinder simultaneously.The utility model can effectively eliminate synchronization error in each hydraulic cylinder travel, avoids synchronization error is accumulated.
Description
Technical field
The utility model relates to a kind of hydraulic pressure installation, particularly a kind of device for eliminating the synchronous cumulative error of hydraulic system.
Background technique
Along with the development of hydraulics, hydraulic pressure installation has been widely used in the every field of national economy, as Aeronautics and Astronautics, boats and ships, communications and transportation, machine-building, engineering construction, petrochemical industry, all kinds of machinery and the aspect such as ocean development and earthquake prediction; And hydraulic element have realized standardization, seriation and generalization, be very easy to the selection of people.
Hydraulic system realizes synchronous method to be had multiple, such as, realize the synchronization control of oil hydraulic cylinder with synchronized cylinder, syncmotor, flow divider-combiner etc.
Above-mentioned hydraulic system realizes the method that hydraulic cylinder synchronous controls, and is generally used for opened loop control.That is, stretch out or return stroke in each of oil hydraulic cylinder, all can produce error.As shown in Figure 1, after the piston rod of oil hydraulic cylinder 3 reaches buting iron 5 position, under the effect of flow divider-combiner 2, as long as oil hydraulic cylinder 3 piston does not move, oil hydraulic cylinder 4 rodless cavity also can not get the flow needed; Result is that the piston rod of oil hydraulic cylinder 4 stretches out not to the end.Its synchronization accuracy is higher, and error is less.These errors, can increase along with the increase of oil hydraulic cylinder reciprocating stroke number of times.Synchronization accuracy is higher, and cumulative error is more not easy to eliminate.
Model utility content
In order to overcome the above-mentioned defect that prior art exists, the purpose of this utility model is to provide a kind of device for eliminating the synchronous cumulative error of hydraulic system, and it can effectively eliminate synchronization error in each hydraulic cylinder travel, avoids synchronization error is accumulated.
For achieving the above object, the utility model adopts following technological scheme:
A kind of device for eliminating the synchronous cumulative error of hydraulic system, comprise: solenoid directional control valve, flow divider-combiner, two oil hydraulic cylinders, two relief valves, the A mouth of selector valve connects flow divider-combiner A1 mouth, the B1 mouth connecting fluid cylinder pressure rodless cavity of flow divider-combiner, connect relief valve P mouth, B2 mouth connecting fluid cylinder pressure rodless cavity, connects relief valve P mouth simultaneously simultaneously, two relief valve T mouth connected tanks, selector valve B mouth connects the rod chamber of oil hydraulic cylinder simultaneously.
Hydraulic cylinder piston rod stretches out in process, and fluid is by selector valve A mouth, and under flow distributing and collecting valve action, fluid is divided into two-part uniformly, enters two oil hydraulic cylinder rodless cavities through B1, B2 mouth.Two hydraulic cylinder piston rods stretch out with same speed.Because flow divider-combiner has error, so necessarily the piston rod of an oil hydraulic cylinder first stretches out to the end, suppose that hydraulic cylinder piston rod first hits buting iron, continue fuel feeding, the pressure of oil hydraulic cylinder rodless cavity can rise, and at this moment relief valve is opened.Flow divider-combiner B1, B2 mouth all has flow to flow out, because hydraulic cylinder piston rod to the end, B1 mouth flow is through relief valve oil sump tank, and the flow of B2 mouth enters oil hydraulic cylinder.Even if flow divider-combiner has error like this, two hydraulic cylinder piston rods still can be made at every turn can to stretch out to the end, avoid cumulative error.
The beneficial effects of the utility model are, synchronous hydraulic cylinder can be made to avoid cumulative error.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the oil hydraulic circuit not taking to eliminate the synchronous cumulative error of hydraulic system.
Fig. 2 is the oil hydraulic circuit taking to eliminate the synchronous cumulative error of hydraulic system.
Number in the figure illustrates:
1 solenoid directional control valve
2 flow divider-combiners
3,4 oil hydraulic cylinders
5 buting iron
6,7 relief valves
Embodiment
The utility model embodiment accompanying drawings is as follows:
As Figure 1-Figure 2, a kind of device for eliminating the synchronous cumulative error of hydraulic system, comprise: solenoid directional control valve 1, flow divider-combiner 2, two oil hydraulic cylinders 3,4, two relief valves 6,7, the A mouth of selector valve 1 connects flow divider-combiner A1 mouth, B1 mouth connecting fluid cylinder pressure 3 rodless cavity of flow divider-combiner 2, connects relief valve 7P mouth simultaneously, B2 mouth connecting fluid cylinder pressure 4 rodless cavity, connect relief valve 6P mouth, two relief valve T mouth connected tanks simultaneously.Selector valve B mouth connects the rod chamber of oil hydraulic cylinder 3,4 simultaneously.
Hydraulic cylinder piston rod stretches out in process, and fluid is by selector valve A mouth, and under flow distributing and collecting valve action, fluid is divided into two-part uniformly, enters two oil hydraulic cylinder rodless cavities through B1, B2 mouth.Two hydraulic cylinder piston rods stretch out with same speed.Because flow divider-combiner has error, so necessarily the piston rod of an oil hydraulic cylinder first stretches out to the end, suppose that oil hydraulic cylinder 3 piston rod first hits buting iron 5, continue fuel feeding, the pressure of oil hydraulic cylinder 3 rodless cavity can rise, and at this moment relief valve 7 is opened.Flow divider-combiner B1, B2 mouth all has flow to flow out, because oil hydraulic cylinder 3 piston rod to the end, B1 mouth flow is through relief valve 7 oil sump tank, and the flow of B2 mouth enters oil hydraulic cylinder 4.Even if flow divider-combiner has error like this, two hydraulic cylinder piston rods still can be made at every turn can to stretch out to the end, avoid cumulative error.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
In sum, the utility model is in structural design, use practicability and cost benefit, meet completely needed for industry development, and the structure disclosed also is have unprecedented innovative structure, there is novelty, creativeness, practicability, meet the regulation about new patent important document, therefore mention application in accordance with the law.
Claims (1)
1. one kind for eliminating the device of the synchronous cumulative error of hydraulic system, it is characterized in that, comprise: solenoid directional control valve (1), flow divider-combiner (2), two oil hydraulic cylinders (3, 4), two relief valves (6, 7), the A mouth of selector valve (1) connects flow divider-combiner A1 mouth, B1 mouth connecting fluid cylinder pressure (3) rodless cavity of flow divider-combiner (2), connect relief valve (7) P mouth simultaneously, B2 mouth connecting fluid cylinder pressure (4) rodless cavity, connect relief valve (6) P mouth simultaneously, two relief valve T mouth connected tanks, selector valve B mouth connects oil hydraulic cylinder (3 simultaneously, 4) rod chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537649.2U CN204113812U (en) | 2014-09-18 | 2014-09-18 | For eliminating the device of the synchronous cumulative error of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420537649.2U CN204113812U (en) | 2014-09-18 | 2014-09-18 | For eliminating the device of the synchronous cumulative error of hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204113812U true CN204113812U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420537649.2U Expired - Fee Related CN204113812U (en) | 2014-09-18 | 2014-09-18 | For eliminating the device of the synchronous cumulative error of hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204113812U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221501A (en) * | 2015-11-10 | 2016-01-06 | 湘电风能有限公司 | A kind of wind driven generation set main shaft locking synchronization hydraulic system |
| CN114370439A (en) * | 2022-02-08 | 2022-04-19 | 劳博(上海)物流科技有限公司 | Hydraulic system in series mode |
-
2014
- 2014-09-18 CN CN201420537649.2U patent/CN204113812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221501A (en) * | 2015-11-10 | 2016-01-06 | 湘电风能有限公司 | A kind of wind driven generation set main shaft locking synchronization hydraulic system |
| CN114370439A (en) * | 2022-02-08 | 2022-04-19 | 劳博(上海)物流科技有限公司 | Hydraulic system in series mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20170918 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |