CN103615585A - Double-cylinder hydraulic actuator - Google Patents
Double-cylinder hydraulic actuator Download PDFInfo
- Publication number
- CN103615585A CN103615585A CN201310602275.8A CN201310602275A CN103615585A CN 103615585 A CN103615585 A CN 103615585A CN 201310602275 A CN201310602275 A CN 201310602275A CN 103615585 A CN103615585 A CN 103615585A
- Authority
- CN
- China
- Prior art keywords
- gear shaft
- cylinder
- double
- hydraulic
- hydraulic actuator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
Abstract
The invention discloses a double-cylinder hydraulic actuator. The double-cylinder hydraulic actuator comprises two hydraulic cylinder subassemblies and an actuating mechanism, wherein each hydraulic cylinder subassembly comprises a cylinder body and a piston; the actuating mechanism comprises a gear shaft and racks arranged on side surfaces of the pistons; the gear shaft penetrates in the cylinder bodies to be meshed with the racks; and the two hydraulic cylinder subassemblies are distributed on two sides of the gear shaft, so that a double-driving structure for the gear shaft is formed. The double-cylinder hydraulic actuator is characterized in that oil cavities formed in different sides of the two hydraulic cylinder subassemblies are connected with each other; and limiting screws are arranged on flanges at ends of the cylinder bodies. The double-cylinder hydraulic actuator is compact in structure, small in mounting size, large in transmission torque and low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of hydraulic executer, especially a kind of hydraulic executer of valve.
Background technique
In Morden Pipe Network engineering, a large amount of valves that adopt are as control unit, and a lot of occasions requirements are accomplished by the unlatching of operating console telecontrol valve or closed, conventionally adopt hydraulic executer to drive.The hydraulic executer of prior art generally comprises ram, actuator, actuator comprises gear shaft and is arranged on the tooth bar of piston side, by ram driven plunger, moved, by rack drives and its meshed gears axle of piston side, rotated, by gear shaft, drive valve opening or close.Prior art hydraulic executer is single cylinder, if the larger valve of driving torque, aspect ram, need to increase the diameter of piston or increase pressure medium; Aspect actuator, need to increase the gear shaft intensity that cogs, increase gear shaft and cog, generally need to strengthen module, certainly will increase the external diameter that gear shaft cogs like this; Because the angle of revolution of gear shaft when carrying out is certain, therefore increasing the external diameter that gear shaft cogs just needs to increase the axial dimension of ram.Like this, the physical dimension of whole hydraulic executer (particularly axial dimension) must be huger, and manufacture cost is higher, and required installation dimension is large.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of compact structure is provided, installation dimension is little, and transmitting torque is large, the twin-tub hydraulic executer of low cost of manufacture.
The present invention is achieved through the following technical solutions technical goal.
Twin-tub hydraulic executer, comprises hydraulic pressure cylinder assembly, actuator; Described hydraulic pressure cylinder assembly comprises cylinder body, piston; Described actuator comprises gear shaft and is arranged on the tooth bar of piston side; Described gear shaft runs through cylinder body and tooth bar engagement; Its improvements are: described hydraulic pressure cylinder assembly is two groups, are distributed in the both sides of gear shaft, form the two driving structure to gear shaft.
In said structure, the oil pocket of two described hydraulic pressure cylinder assembly heteropleurals is connected.
In said structure, described cylinder ends flange is provided with Limit screw.
The present invention compared with prior art, has following good effect:
1. liang group hydraulic pressure cylinder assembly gear shaft simultaneously, has significantly improved the ability of hydraulic executer transmitting torque; The diameter that need not add Large Gear Shaft During or piston, also, without strengthening oil hydraulic cylinder axial dimension, compact structure, significantly reduces volume of the present invention, and installation dimension is little, significantly reduces manufacture cost.
2. cylinder ends flange is provided with Limit screw, adjustable hydraulic pressure cylinder assembly piston mobile position, thereby adjustment actuating mechanism rotation angle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is that moment of torsion of the present invention transmits schematic diagram.
Embodiment
The invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments below.
Twin-tub hydraulic executer shown in the drawings, comprises hydraulic pressure cylinder assembly 1, actuator 2; Hydraulic pressure cylinder assembly 1 comprises cylinder body 1.1, piston 1.2; Actuator 2 comprises gear shaft 2.1 and is arranged on the tooth bar 2.2 of piston 1.2 sides; Gear shaft 2.1 runs through cylinder body 1.1 and tooth bar 2.2 engagements; Hydraulic pressure cylinder assembly 1 is two groups, is distributed in the both sides of gear shaft 2.1, forms the two driving structure to gear shaft 2.1; In the present embodiment, the oil pocket of two hydraulic pressure cylinder assembly 1 heteropleurals is connected.
In order to regulate piston 1.2 mobile positions in hydraulic pressure cylinder assembly 1, cylinder body 1.1 end flange are provided with Limit screw 1.4.
The present invention is working into the oil pocket of, two hydraulic pressure cylinder assembly 1 heteropleurals input media simultaneously, and the middle piston 1.2 in two hydraulic pressure cylinder assemblies 1 move round about, forms the two drivings to gear shaft 2.1.
Claims (3)
1. a twin-tub hydraulic executer, comprises hydraulic pressure cylinder assembly (1), actuator (2); Described hydraulic pressure cylinder assembly (1) comprises cylinder body (1.1), piston (1.2); Described actuator (2) comprises gear shaft (2.1) and is arranged on the tooth bar (2.2) of piston (1.2) side; Described gear shaft (2.1) runs through cylinder body (1.1) and tooth bar (2.2) engagement; It is characterized in that: described hydraulic pressure cylinder assembly (1) is two groups, is distributed in the both sides of gear shaft (2.1), form the two driving structure to gear shaft (2.1).
2. twin-tub hydraulic executer according to claim 1, is characterized in that: the oil pocket of two described hydraulic pressure cylinder assemblies (1) heteropleural is connected.
3. twin-tub hydraulic executer according to claim 1 and 2, is characterized in that: described cylinder body (1.1) end flange is provided with Limit screw (1.4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602275.8A CN103615585A (en) | 2013-11-25 | 2013-11-25 | Double-cylinder hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310602275.8A CN103615585A (en) | 2013-11-25 | 2013-11-25 | Double-cylinder hydraulic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103615585A true CN103615585A (en) | 2014-03-05 |
Family
ID=50166296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310602275.8A Pending CN103615585A (en) | 2013-11-25 | 2013-11-25 | Double-cylinder hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103615585A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2542841A (en) * | 2015-10-01 | 2017-04-05 | Goodwin Plc | Value |
| CN106678432A (en) * | 2016-12-16 | 2017-05-17 | 重庆市巴山液压附件厂有限公司 | Hydraulic gear and rack oil cylinder for pipeline valve opening and closing |
| CN107676526A (en) * | 2017-11-16 | 2018-02-09 | 成都华科阀门制造有限公司 | A kind of variable-torque electrohydraulic actuator and control method based on the butterfly valve interlocked firmly |
-
2013
- 2013-11-25 CN CN201310602275.8A patent/CN103615585A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2542841A (en) * | 2015-10-01 | 2017-04-05 | Goodwin Plc | Value |
| WO2017055856A1 (en) * | 2015-10-01 | 2017-04-06 | Goodwin Plc | Valve |
| GB2542841B (en) * | 2015-10-01 | 2017-10-18 | Goodwin Plc | Valve |
| US10557562B2 (en) | 2015-10-01 | 2020-02-11 | Goodwin Plc | Valve |
| EA034670B1 (en) * | 2015-10-01 | 2020-03-04 | Гудвин Плк | Valve |
| CN106678432A (en) * | 2016-12-16 | 2017-05-17 | 重庆市巴山液压附件厂有限公司 | Hydraulic gear and rack oil cylinder for pipeline valve opening and closing |
| CN107676526A (en) * | 2017-11-16 | 2018-02-09 | 成都华科阀门制造有限公司 | A kind of variable-torque electrohydraulic actuator and control method based on the butterfly valve interlocked firmly |
| CN107676526B (en) * | 2017-11-16 | 2024-02-09 | 成都华科阀门制造有限公司 | Variable torque electrohydraulic actuator of butterfly valve based on hard interlocking and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |