CN105822812A - Linear motion electric actuator - Google Patents
Linear motion electric actuator Download PDFInfo
- Publication number
- CN105822812A CN105822812A CN201610359943.2A CN201610359943A CN105822812A CN 105822812 A CN105822812 A CN 105822812A CN 201610359943 A CN201610359943 A CN 201610359943A CN 105822812 A CN105822812 A CN 105822812A
- Authority
- CN
- China
- Prior art keywords
- nut
- rack
- screw
- valve
- gear
- 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.)
- Granted
Links
- 230000033001 locomotion Effects 0.000 title abstract 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000003028 elevating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/504—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating means being rotable, rising, and having internal threads which co-operate with threads on the outside of the valve body
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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
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a linear motion electric actuator. The linear motion electric actuator comprises a support, a shell, an actuating assembly and a control part. A bearing seat is arranged in the shell. The linear motion electric actuator is characterized in that the actuating assembly comprises a hollow screw and a nut matched with the hollow screw; the screw is arranged in the bearing seat; a bearing is arranged between the screw and the bearing seat; the hollow screw is connected with a transmission part; the nut is connected with a valve and is provided with a limiting member which limits rotation of the nut; the control part comprises a rack and a switch control assembly used for detecting lifting of the rack; and one end of the rack penetrates through the hollow screw to be connected with the nut. The rack penetrates through the screw, the upper portion of the rack is connected with the control part, the lower portion of the rack is connected with the nut, the nut is directly connected with the valve, and the position changelocation movement of the rack directly acts on the valve, so that the linear motion electric actuator is higher in control precision of valve flow. In addition, the rack is long in the longitudinal direction, the technical requirement of explosion-proof products is met, and the application range and field are wider.
Description
Technical field
The present invention relates to the improvement invention of a kind of straight distance power-driven actuating.
Background technology
The Direct Travel mechanism of many revolution YEs is the opening and closing for valve, i.e. drives valve rod to move by the output nut of Direct Travel mechanism, thus realizes the opening and closing of valve.Existing Direct Travel mechanism generally uses the position sensing structure of enumerator form, such as by detection motor or the rotating cycle of screw rod, estimate the position of valve, any drive mechanism is all to there is return difference and dead band, thus cause the actual position that cannot accurately detect valve, the most just cannot the flow of control accurate valve.The precision that valve flow is controlled by the most general Direct Travel mechanism can only achieve 1%, can not meet the requirement of present high-end automation equipment.Also having a kind of Direct Travel mechanism is to use tooth bar to be mounted on installation axle, described installation axle is connected with output shaft by connecting rod, and tooth bar is arranged on the side of support with installing axle, this structure not only can affect the stability of executor, key also resides in because installing tooth bar in the control room of housing additional to need additionally to process a through hole communicated with control room on housing, thus it is difficult to reach explosion-proof effect, and this type of physical dimension is big, thus housing and the volume of control room and space want big；And when manual operation is excessive, tooth bar can push up bad housing and control part, causes heavy losses.
Summary of the invention
The technical problem existed in view of background technology, it is not only accurate to Valve controlling that the technical problem to be solved in the present invention is to provide one, and compact conformation, simplifies, and is hardly damaged again product, meets the straight distance power-driven actuating that anti-explosion product technology requires.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that and realizes: this kind of straight distance power-driven actuating, include support, housing, executive module and control parts, it is provided with bearing block in described housing, it is characterized in that described executive module includes hollow screw and the nut matched with hollow screw, described screw rod is arranged in bearing block, it is provided with bearing between described screw rod and bearing block, described hollow screw is connected with drive disk assembly, described nut is connected with valve, nut is equipped and limits its limited part rotated, described control parts include tooth bar and the on-off control assembly of detection gear rack elevating, one end of described tooth bar is connected through hollow screw with nut.
Described screw rod and bearing block are arranged on the centre position of support.
Described bearing block has downwardly extended nut guide holder, and the inner chamber of described nut guide holder matches with nut.
Described drive disk assembly includes motor, worm and gear and travelling gear, and described travelling gear is connected with screw coaxial, and described travelling gear engages with turbine, and the output shaft of described motor is connected with worm-drive.
Described on-off control assembly includes gear, cam and the microswitch with cam engagement, and described wheel and rack engages, and described cam is connected with gear.
Described limited part includes slide, and described nut is arranged on slide, and described support includes guide pillar, and the two ends of described slide are slidably connected with guide pillar, and when valve start operating performance, described slide lifts along guide pillar.
The lower end of the tooth bar of the present invention is connected through hollow screw with nut, the upper end of tooth bar controls assembly with the microswitch controlling parts and is connected, nut is then directly connected with valve, the position of tooth bar is moved and is directly acted on valve, therefore the present invention is higher to the control accuracy of valve flow, and tooth bar connects control parts on screw rod, lower connected nut, jump length, meet the technology requirement of anti-explosion product, range and field are wider, even if manual operation is excessive, executor also will not be caused damage because lifting in screw rod by tooth bar, additionally, tooth bar is arranged on the centre position of support, make structure compacter, exquisite, structural stability is more preferable.
Accompanying drawing explanation
Further describe the operation principle of the present invention and relevant details thereof below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the cross-sectional schematic along Figure 1A-A line of the present invention.
Detailed description of the invention
Referring to the drawings, this kind of straight distance power-driven actuating, include support 1, housing 10, executive module 19 and control parts 18, described control parts 18 are arranged on the top of executor, and in housing 10, the cavity volume for setup control unit 18 is control room 14；nullIt is provided with bearing block 8 in described housing 10，Described executive module 19 includes hollow screw 6 and with hollow screw to the nut 5 mated，Described hollow screw 6 is arranged in bearing block 8，It is provided with bearing 9 between described hollow screw 6 and bearing block 8，Described bearing block 8 has downwardly extended nut guide holder 4，The inner chamber of described nut guide holder 4 matches with nut 5，Described screw rod 6 is connected with drive disk assembly，Described nut 5 is connected with valve，Described nut 5 is equipped and limits its limited part rotated，In the present embodiment，Described drive disk assembly includes motor 17、Worm and gear 20 and travelling gear 11，Described travelling gear 11 is coaxially connected with screw rod 6，Described travelling gear engages with turbine，The output shaft of described motor is connected with worm-drive，I.e. motor 17 is rotated by worm and gear 20 band nutating gear 11，Thus drive screw rod 6 to rotate，Described screw rod 6 can also use other technologies means to realize rotating，Such as screw rod is driven to rotate by operated by handwheel；Described limited part includes slide 3, described nut 5 is arranged on slide 3, described support 1 includes guide pillar 2, the two ends of described slide 3 are slidably connected with guide pillar 2, and when valve start operating performance, described slide 3 lifts along guide pillar 2, when i.e. screw rod 6 rotates, slide 3 limits nut 5 and rotates, and forces the relative screw rod 6 of nut 5 to move up and down, and nut guide holder 4 makes nut 5 more stable lifting；Described control parts 18 include tooth bar 7 and the on-off control assembly 15 of detection gear rack elevating, described on-off control assembly 15 includes gear 21, cam and the microswitch with cam engagement, described gear 21 engages with tooth bar 7, described cam is connected with gear 21, when cam contacts with microswitch, motor 17 is automatically stopped operation, and tooth bar 7 also stops mobile；The upper end of described tooth bar 7 is stretched into control room 14 and is engaged with gear 21, and the lower end of described tooth bar 7 is connected through hollow screw 6 with nut 5；Described screw rod 6 and bearing block 8 are arranged on the centre position of support 1, i.e. screw rod 6 and overlap with the centrage of support 1 vertical direction, and such transmission component and control modular construction design are compacter, and structural stability is more preferable.
nullDescribed motor 17 starts，Rotated by worm and gear 20 band nutating gear 11，And make screw rod 6 rotate in bearing block 8，Described screw rod 6 then drives nut 5 to lift in nut guide holder 4，Valve rod and the tooth bar 7 of nut 5 band movable valve simultaneously move，Described tooth bar 7 then driven gear 21 rotates，And detect the misalignment of tooth bar 7 in real time by on-off control assembly and control the flow of valve，Due to valve、Nut 5 and tooth bar 7 are one，Therefore the flow of valve directly monitored by on-off control assembly 15 by tooth bar 7，The most accurate to the control of valve flow，And the tooth bar 7 of the present invention is connected with on-off control assembly 15 and nut 5 respectively through screw rod 6，Tooth bar 7 is jumped length，Structure design is the most reasonable，Meet the technology requirement of anti-explosion product，Even if manual operation is excessive，Executor also will not be caused damage because lifting in screw rod by tooth bar 7，Reduce the loss caused because of operational error.
Claims (6)
1. a straight distance power-driven actuating, include support, housing, executive module and control parts, it is provided with bearing block in described housing, it is characterized in that described executive module includes hollow screw and the nut matched with hollow screw, described screw rod is arranged in bearing block, it is provided with bearing between described screw rod and bearing block, described hollow screw is connected with drive disk assembly, described nut is connected with valve, nut is equipped and limits its limited part rotated, described control parts include tooth bar and the on-off control assembly of detection gear rack elevating, one end of described tooth bar is connected through hollow screw with nut.
Straight distance power-driven actuating the most according to claim 1, it is characterised in that described screw rod and bearing block are arranged on the centre position of support.
Straight distance power-driven actuating the most according to claim 1 and 2, it is characterised in that described bearing block has downwardly extended nut guide holder, the inner chamber of described nut guide holder matches with nut.
Straight distance power-driven actuating the most according to claim 1, it is characterized in that described drive disk assembly includes motor, worm and gear and travelling gear, described travelling gear is connected with screw coaxial, and described travelling gear engages with turbine, and the output shaft of described motor is connected with worm-drive.
Straight distance power-driven actuating the most according to claim 1, it is characterised in that described on-off control assembly includes gear, cam and the microswitch with cam engagement, described wheel and rack engages, and described cam is connected with gear.
Straight distance power-driven actuating the most according to claim 1, it is characterised in that described limited part includes slide, described nut is arranged on slide, described support includes guide pillar, the two ends of described slide are slidably connected with guide pillar, and when valve start operating performance, described slide lifts along guide pillar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610359943.2A CN105822812B (en) | 2016-05-27 | 2016-05-27 | A kind of straight distance power-driven actuating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610359943.2A CN105822812B (en) | 2016-05-27 | 2016-05-27 | A kind of straight distance power-driven actuating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105822812A true CN105822812A (en) | 2016-08-03 |
| CN105822812B CN105822812B (en) | 2018-09-14 |
Family
ID=56531469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610359943.2A Active CN105822812B (en) | 2016-05-27 | 2016-05-27 | A kind of straight distance power-driven actuating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105822812B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685606A (en) * | 2021-08-06 | 2021-11-23 | 江苏海博流体控制有限公司 | Straight stroke transmission device of valve actuator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2242474Y (en) * | 1995-01-11 | 1996-12-11 | 刘吉旺 | Mechanism for telling the position of straight-movement electric actuator |
| DE19652583C1 (en) * | 1996-12-17 | 1997-11-20 | Holter Gmbh & Co | Electric actuator drive for valve |
| CN201258999Y (en) * | 2008-08-01 | 2009-06-17 | 常州电站辅机总厂有限公司 | Adjustment straight-stroke valve actuator |
| CN202327310U (en) * | 2011-11-18 | 2012-07-11 | 浙江澳翔自控科技有限公司 | Linear stroke electric actuator |
| CN203363360U (en) * | 2013-07-15 | 2013-12-25 | 济南大学 | Intelligent linear electric actuator mechanism |
| CN203453599U (en) * | 2013-08-19 | 2014-02-26 | 上海孚因流体动力设备有限公司 | Straight-stroke electric actuator |
| CN205781218U (en) * | 2016-05-27 | 2016-12-07 | 浙江澳翔自控科技有限公司 | A kind of straight distance power-driven actuating |
-
2016
- 2016-05-27 CN CN201610359943.2A patent/CN105822812B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2242474Y (en) * | 1995-01-11 | 1996-12-11 | 刘吉旺 | Mechanism for telling the position of straight-movement electric actuator |
| DE19652583C1 (en) * | 1996-12-17 | 1997-11-20 | Holter Gmbh & Co | Electric actuator drive for valve |
| CN201258999Y (en) * | 2008-08-01 | 2009-06-17 | 常州电站辅机总厂有限公司 | Adjustment straight-stroke valve actuator |
| CN202327310U (en) * | 2011-11-18 | 2012-07-11 | 浙江澳翔自控科技有限公司 | Linear stroke electric actuator |
| CN203363360U (en) * | 2013-07-15 | 2013-12-25 | 济南大学 | Intelligent linear electric actuator mechanism |
| CN203453599U (en) * | 2013-08-19 | 2014-02-26 | 上海孚因流体动力设备有限公司 | Straight-stroke electric actuator |
| CN205781218U (en) * | 2016-05-27 | 2016-12-07 | 浙江澳翔自控科技有限公司 | A kind of straight distance power-driven actuating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685606A (en) * | 2021-08-06 | 2021-11-23 | 江苏海博流体控制有限公司 | Straight stroke transmission device of valve actuator |
| CN113685606B (en) * | 2021-08-06 | 2023-05-26 | 江苏海博流体控制有限公司 | Straight travel transmission device of valve actuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105822812B (en) | 2018-09-14 |
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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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A straight stroke electric actuator Effective date of registration: 20221114 Granted publication date: 20180914 Pledgee: Bank of China Limited Rui'an Sub branch Pledgor: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022330003047 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231214 Granted publication date: 20180914 Pledgee: Bank of China Limited Rui'an Sub branch Pledgor: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2022330003047 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A straight stroke electric actuator Effective date of registration: 20231221 Granted publication date: 20180914 Pledgee: Bank of China Limited Rui'an Sub branch Pledgor: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2023980072665 |