CN101566251B - Linear stroke transmission device of electric valve actuator - Google Patents
Linear stroke transmission device of electric valve actuator Download PDFInfo
- Publication number
- CN101566251B CN101566251B CN2009100956508A CN200910095650A CN101566251B CN 101566251 B CN101566251 B CN 101566251B CN 2009100956508 A CN2009100956508 A CN 2009100956508A CN 200910095650 A CN200910095650 A CN 200910095650A CN 101566251 B CN101566251 B CN 101566251B
- Authority
- CN
- China
- Prior art keywords
- shaft sleeve
- valve actuator
- propeller shaft
- rod
- electric valve
- 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 - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000001143 conditioned effect Effects 0.000 claims description 5
- 239000011120 plywood Substances 0.000 abstract 2
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Transmission Devices (AREA)
Abstract
The invention relates to a linear stroke transmission device of an electric valve actuator, which comprises a thrust base, a bracket, a driving shaft housing and a thrust rod. One end of the thrust rod is provided with a screw rod, and the other end thereof is fixedly connected with a valve rod of a controlled valve by a plywood; the two sides of the plywood are embedded in the vertical groove of the bracket; as the screw rod of the thrust rod is provided with arc groove threads, the driving shaft housing is evenly provided with ball bearing holes along the spiral direction corresponding to the arc groove threads of the thrust rod, and ball bearings and needle rollers are arranged in the ball bearing holes; the ball bearings are provided with spherical circular arcs matched with the thrustrod arc groove threads; and the driving shaft housing outside the needle rollers is provided with a fixed housing. External threads of the thrust rod are matched the ball bearings in the driving shaf t housing in a rolling way for transmission so as to reduce the friction and improve the fitting accuracy thereof; in addition, the transmission device has the advantages of stable and reliable accuracy control, and long product service life and the like, thus being applied to adjustment of the valve actuator.
Description
Technical field
The present invention relates to a kind of final controlling element transmission device, particularly about a kind of linear stroke transmission device of electric valve actuator.The present invention is applicable to the transmission device of modulating valve final controlling element.
Background technique
The linear stroke transmission device of existing electric valve actuator generally comprises thrust base, support, propeller shaft sleeve, push rod, the thrust base is fixedlyed connected with the rotating disk of the motor output shaft of electric valve actuator, propeller shaft sleeve is installed in the thrust base by bearing and binding nut, push rod one end is shaped on externally threaded screw rod and cooperatively interacts with the internal threaded nut of propeller shaft sleeve and be connected, the other end of push rod is fixedlyed connected with the valve rod that is conditioned valve by sandwich panel, and the both sides of sandwich panel are embedded in the vertical slot of support.When thrust base, propeller shaft sleeve during by the rotating disk driven rotary of the motor output shaft of electric valve actuator, because the restriction of sandwich panel in the support vertical slot, make push rod, sandwich panel together with the valve rod moving linearly that is conditioned valve, realize the straight journey of valve is regulated.Its shortcoming is: the internal threaded nut of the screw rod of push rod and the propeller shaft sleeve transmission that cooperatively interacts in use, wherein screw rod can improve its hardness and wear resistance by quenching technical, and the copper nut of propeller shaft sleeve is not easy to carry out the hardening process processing, so in both engagement process, the internal threaded nut of propeller shaft sleeve is held wearing and tearing very much, and after through long-term the use, matching gap increases between the two, reduce degree of regulation, product is short working life.
Summary of the invention
The objective of the invention is the shortcoming that exists at prior art, provide that a kind of degree of regulation is stable, the linear stroke transmission device of the electric valve actuator of long service life.
Technological scheme of the present invention comprises thrust base, support, propeller shaft sleeve, push rod, the thrust base is fixedlyed connected with the support of electric valve actuator motor side, propeller shaft sleeve is fixedlyed connected with the output shaft of electric valve actuator motor side, one end of push rod is a screw rod, the other end is fixedlyed connected with the valve rod that is conditioned valve by sandwich panel, and the both sides of sandwich panel are flush-mounted in the vertical slot of support; The screw rod that mainly is push rod is the arc groove screw thread, and propeller shaft sleeve evenly is shaped on ball hole on the Hand of spiral circumference of rod arc groove threads correspondence, and ball and needle roller are installed in ball hole; Described ball has the spherical arc that cooperatively interacts with rod arc groove threads; Install and fix cover on the propeller shaft sleeve in the described needle roller outside.
In above technological scheme, the ball hole dislocation on the propeller shaft sleeve on the adjacent helix is arranged.
In technique scheme, the ball hole on the propeller shaft sleeve evenly is provided with 4 in one week, and 45 ° of arc round angles of mutual dislocation are arranged between the ball hole on the adjacent helix.
The present invention's advantage compared with prior art is that the ball in outside thread and the propeller shaft sleeve of push rod rolls and cooperates transmission, the outside thread of ball and push rod carries out hardening process easily to be handled, improve both wear resistancies, reduce wearing and tearing between the two, improve quality of fit between the two, reliable and stable, the long product lifecycle of its degree of regulation.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
The linear stroke transmission device of electric valve actuator as shown in Figure 1, comprise thrust base 4, support 18, propeller shaft sleeve 1, push rod 13, thrust base 4 is fixedlyed connected with the support of electric valve actuator motor side, propeller shaft sleeve 1 is fixedlyed connected with the output shaft of electric valve actuator motor side, one end of push rod 13 is a screw rod, and the other end is fixedlyed connected with the valve rod that is conditioned valve by sandwich panel 17.Sandwich panel 17 is made up of by 16 fixed installations of cylinder screw two clamping plate, and its both sides are flush-mounted in the vertical slot of support 18, can move by straight line in this vertical slot, rotate and limit its circumferencial direction.Radially by key 15 location, anti-throw-out lever 13 rotates in sandwich panel 17 between the so-called the other end of push rod 13 and the sandwich panel 17, axially by nut 14 fixed installations.The screw rod of push rod 13 is the arc groove screw thread, and propeller shaft sleeve 1 evenly is shaped on ball hole on the corresponding Hand of spiral circumference in push rod 13 arc groove screw threads outside, ball 12 and needle roller 11 are installed in ball hole.Described ball 12 has the spherical arc that cooperatively interacts with push rod 13 arc groove screw threads; Install and fix cover 8 on the propeller shaft sleeve 1 in described needle roller 11 outsides, an end and the ball 12 of needle roller 11 contact, and the other end and fixed cover 8 inwalls contact, and keep the Spielpassung between ball 12 and the push rod 13 arc groove screw threads.Ball 12 in propeller shaft sleeve 1 ball hole helical arrangement and the screw rod of push rod 13 between form nut-screw drive cooperating structure.Establish a bearing 5 between propeller shaft sleeve 1 and the thrust base 4, propeller shaft sleeve 1 is compressed by binding nut 3, Cock screw 2 and is installed on the bearing 5.Support 18 is fixedly mounted on the thrust base 4 by socket head screw 10, spring pad 9, between thrust base 4 and the support 18 trim ring 6 is set, and this trim ring 6 is installed on the thrust base 4 by screw 7.
The dislocation of the ball hole of adjacent helix is arranged on the propeller shaft sleeve 1.Be that the ball hole in adjacent two circumference is staggered on the circular arc direction on propeller shaft sleeve 1 corresponding push rod 13 hand of thread spirals.
Evenly be provided with 4 in circumference of ball hole on the propeller shaft sleeve 1, promptly the radian between adjacent two ball holes is 90 ° in a circumference.45 ° of arc round angles of mutual dislocation are arranged between the ball hole on the adjacent helix.The quantity of propeller shaft sleeve 1 ball hole in a circumference is set according to the size of thrust.
Claims (3)
1. the linear stroke transmission device of an electric valve actuator, comprise thrust base (4), support (18), propeller shaft sleeve (1), push rod (13), thrust base (4) is fixedlyed connected with the support of electric valve actuator motor side, propeller shaft sleeve (1) is fixedlyed connected with the output shaft of electric valve actuator motor side, one end of push rod (13) is a screw rod, the other end is fixedlyed connected with the valve rod that is conditioned valve by sandwich panel (17), and the both sides of sandwich panel (17) are flush-mounted in the vertical slot of support (18); The screw rod that it is characterized in that push rod (13) is the arc groove screw thread, and propeller shaft sleeve (1) evenly is shaped on ball hole on the Hand of spiral circumference of push rod (13) arc groove screw thread correspondence, and ball (12) and needle roller (11) are installed in ball hole; Described ball (12) has the spherical arc that cooperatively interacts with push rod (13) arc groove screw thread; Install and fix cover (8) on the propeller shaft sleeve (1) in described needle roller (11) outside.
2. the linear stroke transmission device of electric valve actuator according to claim 1 is characterized in that the ball hole dislocation on the last adjacent helix of propeller shaft sleeve (1) is arranged.
3. the linear stroke transmission device of electric valve actuator according to claim 1 and 2 is characterized in that the ball hole on the propeller shaft sleeve (1) evenly is provided with 4 in a circumference, and 45 ° of arc round angles of mutual dislocation are arranged between the ball hole on the adjacent helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100956508A CN101566251B (en) | 2009-01-15 | 2009-01-15 | Linear stroke transmission device of electric valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100956508A CN101566251B (en) | 2009-01-15 | 2009-01-15 | Linear stroke transmission device of electric valve actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101566251A CN101566251A (en) | 2009-10-28 |
| CN101566251B true CN101566251B (en) | 2010-12-01 |
Family
ID=41282558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100956508A Expired - Fee Related CN101566251B (en) | 2009-01-15 | 2009-01-15 | Linear stroke transmission device of electric valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101566251B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858455B (en) * | 2010-06-04 | 2011-11-30 | 烟台冰轮高压氧舱有限公司 | Electric control valve |
| CN105387257B (en) * | 2015-12-29 | 2018-09-04 | 浙江盾安自控科技有限公司 | Electric control valve |
| CN114251505B (en) * | 2021-12-06 | 2023-12-12 | 北京航天石化技术装备工程有限公司 | Rotary lifting mechanism driven by straight travel actuator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190918698A (en) * | 1909-08-13 | 1910-08-15 | James Dennis Roots | Improvements in Screw and Nut Mechanism and the like. |
| CN2130962Y (en) * | 1992-06-12 | 1993-04-28 | 浙江省衢州汽车运输总公司 | Roller screw pair |
| US5373754A (en) * | 1992-07-24 | 1994-12-20 | Nippon Thompson Co., Ltd. | Ball screw |
| CN2690697Y (en) * | 2004-04-20 | 2005-04-06 | 深圳市佳运通电子有限公司 | Electric actuator |
| CN2718884Y (en) * | 2004-01-06 | 2005-08-17 | 昆明冶金研究院 | Straight-range electric executive mechanism |
-
2009
- 2009-01-15 CN CN2009100956508A patent/CN101566251B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190918698A (en) * | 1909-08-13 | 1910-08-15 | James Dennis Roots | Improvements in Screw and Nut Mechanism and the like. |
| CN2130962Y (en) * | 1992-06-12 | 1993-04-28 | 浙江省衢州汽车运输总公司 | Roller screw pair |
| US5373754A (en) * | 1992-07-24 | 1994-12-20 | Nippon Thompson Co., Ltd. | Ball screw |
| CN2718884Y (en) * | 2004-01-06 | 2005-08-17 | 昆明冶金研究院 | Straight-range electric executive mechanism |
| CN2690697Y (en) * | 2004-04-20 | 2005-04-06 | 深圳市佳运通电子有限公司 | Electric actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101566251A (en) | 2009-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325102 Zhejiang province Yongjia County Oubei Town East Industrial Zone Patentee after: ZHEJIANG ROTORK ACTUATOR CO.,LTD. Address before: 325102 Zhejiang province Yongjia County Oubei Town East Industrial Zone Patentee before: ZHEJIANG ROTORK ACTUATOR Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 |