CN201003646Y - Fork force-moment conversion device - Google Patents
Fork force-moment conversion device Download PDFInfo
- Publication number
- CN201003646Y CN201003646Y CNU2006201686669U CN200620168666U CN201003646Y CN 201003646 Y CN201003646 Y CN 201003646Y CN U2006201686669 U CNU2006201686669 U CN U2006201686669U CN 200620168666 U CN200620168666 U CN 200620168666U CN 201003646 Y CN201003646 Y CN 201003646Y
- Authority
- CN
- China
- Prior art keywords
- force
- fork
- shifting fork
- utility
- model
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a shifting fork type force and torque switching mechanism, which is designed to solve the technical problems that the valve in the pipeline is used for controlling the pipeline fluid flow rate and pressure; and the operation of the valve is completed by the force sent from a hydraulic oil cylinder to pass through a gear wheel rack transmission machine; therefore, the gear wheel rack transmission machine exists the defects of complex structure, low reliability, and small output torque. The utility model has the essential points that: a output shaft is provided with a shifting fork, wherein the shifting fork is provided with a chute used for triggering a guiding shoe of the shifting fork into the chute of the shifting fork; and the action force direction of a straight line acting upon the guiding shoe and the shifting fork form an angle smaller than 90 degrees. The utility model has the positive effects that: as the straight line action force of a piston rod is transformed into a force torque to be put out, thus under the same output force, the force torque of the utility model is two times than the prior art; and when the radius of the shifting fork is increased, the output force torque is also increased; and in addition, the utility model has a simple structure and a low cost.
Description
Technical field
The utility model relates to the force-moment conversion device in driving mechanism, particularly is applied to hydraulic pressure, air pressure or motor driving valve and moves, also can guarantee a kind of fork force-moment conversion device in the valve safe operation device.
Background technique
The drive unit that drives equipment such as valve, air door in most cases is 0-90 ° and rotatablely moves, and needs a kind of mechanism that straight line motion is converted to and rotatablely moves, and linear thrust is converted to moment.This force-moment conversion device generally is to adopt pinion and rack.Rack and pinion drive mechanism is a kind of linear mechanism, and linear thrust and moment are a kind of linear relationships, and point-to-point speed and angular velocity of rotation also are a kind of linear relationships.But in the driving of butterfly valve and ball valve; the driving of this linearity is disadvantageous to the opening and closing of valve; the aperture of butterfly valve and ball valve is a kind of logarithmic relationship with driving moment; if can not protect valve effectively, and drive inefficiency with the valve that the mechanism of linear performance goes to drive log characteristic.Rack and pinion drive mechanism exists complex structure, defect of high cost simultaneously.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model is to provide a kind of fork force-moment conversion device that can avoid above-mentioned deficiency.
The purpose of this utility model is achieved in that fork on the output shaft, slideway is arranged on the fork, and the slide block that is used to stir fork acts on the direction of the linear function power on the slide block and fork folder less than 90 ° angle in the slideway of fork.When the active force driving sliding block on acting on slide block moves back and forth in the slideway of fork, slide block is stirred fork back and forth rotation in 90 ° scope, be that the utility model changes into moment output with linear function power (thrust and pulling force), if output shaft is coaxial with the valve driving axle, then drive the back and forth rotation in 90 ° scope of valve driving axle, realize the Push And Release of valve.
The utility model is compared with the prior art scheme, has the following advantages:
1, because it changes into moment output with the linear function power of piston rod, when the length of fork increased, the moment of its output also increased.
2, simple in structure, with low cost, reliability strengthens.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Accompanying drawing is a stereogram of the present utility model.
Embodiment
This mechanism is applied to hydraulic jack drives butterfly valve.
More than the said active force that acts on the slide block 2 derive from the piston rod 1 of hydraulic jack or pneumatic cylinder, then slide block is fixed on the piston rod of oil hydraulic cylinder or pneumatic cylinder, this slide block is in 4 li in the bar shaped slideway of fork 3, piston rod and fork press from both sides the angle less than 90 °, on same straight line, fork is not fixed on the output shaft 5 for piston rod and fork.For guaranteeing piston rod linear movement reliably, on piston rod, also be provided with sliding sleeve 7, slide block and sliding sleeve are connected as a single entity, and sliding sleeve cooperates with the guide rod 6 that is fixed on casing, and the fork axle is coaxial with the butterfly valve axle.Working procedure is: when the hydraulic jack outputting power, when moving as linear reciprocation, fixedly slide block moves back and forth in the slideway of fork, stir fork back and forth rotation in 90 ° scope, being the utility model changes into moment output with the linear function power of piston rod, drive the back and forth rotation in 90 ° scope of butterfly valve axle, realize the Push And Release of butterfly valve.
Claims (3)
1, a kind of fork force-moment conversion device is characterized in that: fork is arranged on the output shaft, slideway is arranged on the fork, the slide block that is used to stir fork acts on the direction of the linear function power on the slide block and fork folder less than 90 ° angle in the slideway of fork.
2, according to the described fork force-moment conversion device of claim 1, it is characterized in that: said slide block is fixed on the piston rod of oil hydraulic cylinder or pneumatic cylinder, and piston rod and fork press from both sides the angle less than 90 °.
3, according to claim 1 or 2 described fork force-moment conversion devices, it is characterized in that: also be provided with sliding sleeve on piston rod, cooperate with the guide rod that is fixed on casing, output shaft is coaxial with valve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201686669U CN201003646Y (en) | 2006-12-28 | 2006-12-28 | Fork force-moment conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201686669U CN201003646Y (en) | 2006-12-28 | 2006-12-28 | Fork force-moment conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003646Y true CN201003646Y (en) | 2008-01-09 |
Family
ID=39039183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201686669U Expired - Lifetime CN201003646Y (en) | 2006-12-28 | 2006-12-28 | Fork force-moment conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003646Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639136B (en) * | 2008-07-28 | 2010-12-08 | 中航力源液压股份有限公司 | Method and device for eliminating jam of valve core of oil pump servovalve |
-
2006
- 2006-12-28 CN CNU2006201686669U patent/CN201003646Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639136B (en) * | 2008-07-28 | 2010-12-08 | 中航力源液压股份有限公司 | Method and device for eliminating jam of valve core of oil pump servovalve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203961585U (en) | Ball-screw stopping sliding door | |
| CN101639089A (en) | Hydraulic driving device | |
| CN101210633A (en) | Fork force-moment conversion device | |
| CN109000086A (en) | A kind of pipe robot crawling structure | |
| CN102705472A (en) | Transmission device for changing straight reciprocating motion into rotary motion | |
| CN201003646Y (en) | Fork force-moment conversion device | |
| CN202517479U (en) | Clamping device of manipulator of serial boosting mechanism | |
| CN211145188U (en) | Operation control and counter-torque release device with hydraulic brake turntable | |
| CN202878319U (en) | Robot finger based on twisted rope driving | |
| CN201187626Y (en) | Valve drive device | |
| CN101943192A (en) | Two-position six-way speed regulating valve for double-motor driven drill | |
| CN202612528U (en) | Transmission device for converting straight reciprocating motion into rotary motion | |
| CN214093258U (en) | Large-torque double-acting pneumatic actuator, valve and switch door | |
| JP2012507404A5 (en) | ||
| CN201180855Y (en) | Manual fast and reinforcement operation device of high pressure break valve | |
| CN214037081U (en) | Variable speed ratio large torque valve driving device | |
| CN201810606U (en) | Double-motor drive drilling machine double-position six-way speed regulating valve | |
| CN202065535U (en) | Integral type electrohydraulic angle driving device | |
| CN201531482U (en) | Shift fork type pneumatic actuator | |
| CN201058371Y (en) | Tilting arrangement of torpedo type metal mixer car | |
| CN206077136U (en) | A kind of linear motion device of fluid motor-driven | |
| CN2796222Y (en) | Electric executor | |
| CN202768756U (en) | Guide rod mechanism switchover-free type mechanical reversing apparatus | |
| CN206918371U (en) | A kind of valve actuator | |
| CN214093257U (en) | Reset type large-torque pneumatic actuator with manual spring, valve and switch door |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080109 |
|
| EXPY | Termination of patent right or utility model |