CN103104672A - Electric actuator overload protection mechanism - Google Patents
Electric actuator overload protection mechanism Download PDFInfo
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- CN103104672A CN103104672A CN2013100523616A CN201310052361A CN103104672A CN 103104672 A CN103104672 A CN 103104672A CN 2013100523616 A CN2013100523616 A CN 2013100523616A CN 201310052361 A CN201310052361 A CN 201310052361A CN 103104672 A CN103104672 A CN 103104672A
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- gear
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- shaft
- worm
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- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The invention discloses an electric actuator overload protection mechanism. The electric actuator overload protection mechanism comprises a worm shaft (1) and a connecting shaft (2), a worm (3) is sleeved on the worm shaft, one end of the worm is connected with a sheave (5), and a transmission piece is arranged in a groove (13) of the sheave. The electric actuator overload protection mechanism is characterized in that the section of the groove of the sheave is horn-shaped, the transmission piece is a one-tooth gear (6), gear faces on the two sides of the one-tooth gear are arc-shaped gear faces which are arranged in the groove, and the arc-shaped gear faces are contacted with a groove face of the groove in a line mode. The one-tooth gear is connected with a gear shaft (7), fan-shaped gears (8) are installed on the gear shaft and connected with the connecting shaft in a transmission mode, and therefore the contact between the one-tooth gear and the worm is adjustable line contact, namely, a line of the gear faces of the one-tooth gear is always contacted with a line of the groove face of the worm upper groove, the contact is changeable corresponding type line contact, and gear abrasion is reduced.
Description
Technical field
What the present invention relates to is a kind of electric actuator, particularly be a kind of overload protecting mechanism of electric actuator.
Background technique
what the overload protecting mechanism of electric actuator will be completed the linearly adjust employing at present is pressure sensing form, be used for power plant although its structure is simple, Iron And Steel Plant are shaken because of the scene, and voltage instability build-up of pressure effector very easily damages and be affected by magnetic fields larger, relative reliability is poor, and cost is high, also has the general belleville spring that adopts, this often is difficult to be adjusted to accurate moment values as non-linear because of belleville spring, also has plenty of the shift fork of employing form structure for shift fork is placed in the worm screw groove, axial displacement by worm screw drives shift fork generation deflection, its shortcoming is that shift fork is placed in part in groove (groove is both sides grooves linearly, the both sides of shift fork are also straight lines, shift fork directly contacts with groove) always be that point contacts with the worm screw groove when swinging, so just very easily wearing and tearing, and worm screw is on different displacement scales, the angle of swing of shift fork is nonlinear, so do not accomplish the linearly adjust of moment, along with technology is constantly progressive, the operating mode scene has proposed higher safety and performance requirement to product, existing product also needs to intellectuality development easy to operate.
Summary of the invention
In view of the problem that known technology exists, the technical problem to be solved in the present invention is to be to provide a kind of mechanism that can accurately control and measure the stroke of electric actuator.
For solving the problems of the technologies described above, the present invention takes following technological scheme to complete:
a kind of overload protecting mechanism of electric actuator, the overload protecting mechanism of this electric actuator comprises worm shaft and coupling shaft, be arranged with worm screw on described worm shaft, described worm and wheel is in transmission connection, described worm screw both sides are provided with the elastic component that after worm screw moves left and right, worm screw is resetted, described worm screw one end is connected with sheave, be provided with the driving component that coupling shaft is rotated in the groove of described sheave, it is characterized in that: the groove of described sheave its cross section is horn-like, described driving component is single tooth gear, the flank of tooth of described single tooth gear both sides is arc-shaped tooth, the arc-shaped tooth of described single tooth gear is arranged in groove, and arc-shaped tooth is line with the groove face of groove and contacts, when described worm screw moves left and right, single tooth gear is done corresponding rotation, make that on single tooth gear, arc-shaped tooth carries out corresponding conversion with the position that its line of the flank of tooth of sheave groove contacts, described single tooth gear is connected with gear shaft, on described gear shaft, tooth sector is installed, described tooth sector and coupling shaft are in transmission connection.
The described coupling shaft the other end is provided with controlling device, described controlling device and coupling shaft are in transmission connection, described controlling device comprises gear, described gear top is provided with adjusting screw, the outer surface portion of described gear is arranged with tooth, tooth on described gear and gear ＇ engagement, described gear ＇ is connected with cam.
The invention has the beneficial effects as follows: after arranging like this, in single tooth gear is placed on the groove of worm screw, because the flank of tooth of single tooth gear is arc surface, and the groove on worm screw is trumpet-shaped dovetail groove, and when therefore single tooth gear swung in groove, always having always had a line to contact with the line of groove on arc surface, and this face changes along with the rotation of single tooth gear, be single tooth gear with the groove of worm screw between be linear and contact, contact as transformable corresponding line contacts, make single tooth gear be difficult for being worn; By the distance between adjusting gear 1 and gear 2, moment can be adjusted more accurately, and stability is strong.
Description of drawings
The below further describes embodiment more by reference to the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is middle slot of the present invention and single tooth gear enlarged diagram;
Fig. 3 is the schematic diagram that in the present invention, single tooth gear is put into groove;
Fig. 4 is the schematic diagram that contacts with groove face when in the present invention, single tooth gear swings in groove;
Fig. 5 is the schematic diagram that contacts with groove face when in the present invention, single tooth gear swings in groove.
Embodiment
accompanying drawing has represented structure of the present invention and embodiment, the below describes each details of embodiment more by reference to the accompanying drawings, the overload protecting mechanism of this electric actuator comprises worm shaft 1 and coupling shaft 2, be arranged with worm screw 3 on described worm shaft 1, described worm screw 3 is connected with worm drive, described worm screw 3 both sides are provided with the elastic component 4 that after worm screw 3 moves left and right, worm screw is resetted, described elastic component 4 can be Compress Spring, described worm screw one end is connected with sheave 5, be provided with the driving component that coupling shaft 2 is rotated in the groove 13 of described sheave 5, described driving component is single tooth gear 6, groove 13 its cross sections of described sheave 5 are horn-like, the opening that is groove 13 becomes large outwardly gradually, so just can prevent that single tooth gear 6 from encountering notch when the interior swing of groove 13, the groove face of described groove 13 is made of line, the flank of tooth of described single tooth gear 6 both sides is arc-shaped tooth, described arc-shaped tooth is also to be made of line, the arc-shaped tooth of described single tooth gear 6 is arranged in groove 13, and arc-shaped tooth is line with the groove face of groove 13 and contacts, described linear contact, refer to two objects that are in contact with one another, point of contact is continuous, and what point of contact formed is straight line, be that the arc surface of single tooth gear 6 remains that certain line on the groove face of a line and groove 13 contacts, when described worm screw 3 moves left and right, single tooth gear 6 is done corresponding rotation, make the position that on single tooth gear 6, on arc-shaped tooth and sheave 5, its line of the flank of tooth of groove contacts carry out corresponding conversion, because the flank of tooth of single tooth gear 6 is arc surfaces, and formed by N bar line, in this N bar line, there is the line in a scope to contact with the line of groove face, line in this scope always has one can contact with corresponding line on groove face, suppose that on arc surface, the line in scope has 1-10 ten, 1 ＇-10 ＇ is also arranged on groove face so accordingly, when so single tooth gear 6 swings, line 1 on arc surface contacts with 1 ＇ on groove face, line 2 on arc surface contacts with 2 ＇ on groove face, by that analogy, the line of contact can change along with the swing of single tooth gear 6, be single tooth gear 6 with sheave 5 on groove 13 between be transformable corresponding line and contact, because surface of contact is all changing always, namely disperseed point of contact, so the flank of tooth of single tooth gear 6 is not easy to wear, extended working life, described single tooth gear 6 is connected with gear shaft 7, on described gear shaft 7, tooth sector 8 is installed, described tooth sector 8 is in transmission connection with coupling shaft 2, be that coupling shaft 2 is provided with the small gear 16 that meshes with tooth sector 8, described coupling shaft 2 the other ends are provided with controlling device, described controlling device and coupling shaft 2 are in transmission connection, the other end that is described gear shaft 7 is provided with gear pair A14, described controlling device is arranged on gear pair B15, described gear pair A14 and gear pair B15 engagement, described controlling device comprises gear 9, described gear 9 tops are provided with adjusting screw 11, the outer surface portion of described gear 9 is arranged with tooth, be gear 9 outer surface half be provided with tooth, half is smooth surface, tooth on described gear 9 and gear 10 engagements, described gear 10 is connected with cam 12, when needing Torque-adjusting, turn on adjusting screw 11, handsetting gear 9 as required, the distance of the tooth of tooth and gear 10 on change gear 9, for example handsetting gear 9, make toothed surface closer from gear 10, so just shortened the time that gear 9 is encountered gear 10, just can change the rhythm that gear 10 rotates, reach the effect of coming Torque-adjusting according to adjusting gear 9 and the distance of gear 10.When final controlling element is worked, under the load effect, worm screw 3 produces axial displacement when rotating, because the decrement of the size of load and Compress Spring is linear, when load increases to a certain value, spring-compressed is to given length (worm screw axial displacement=amount of spring compression), and worm screw 3 axial displacements drive single tooth gear 6 and rotate respective angles.End at gear shaft 7 has one group of tooth sector 8 that corner is amplified, and the angular displacement after amplification is delivered to gear A by coupling shaft 2, then is delivered to gear B, finally stirs cam by the controlling device on gear B and rotates, switch motion.Although the present invention's simplicity of design can reach very useful effect, must bring better benefit to enterprise.
Claims (2)
1. the overload protecting mechanism of an electric actuator, the overload protecting mechanism of this electric actuator comprises worm shaft (1) and coupling shaft (2), be arranged with worm screw (3) on described worm shaft (1), described worm screw (3) is connected with worm drive, described worm screw (3) both sides are provided with the elastic component (4) that worm screw is resetted, described worm screw (3) one ends are connected with sheave (5), be provided with the driving component that coupling shaft is rotated in the groove (13) of described sheave (5), it is characterized in that: groove (13) its cross section of described sheave (5) is horn-like, described driving component is single tooth gear (6), the flank of tooth of described single tooth gear (6) both sides is arc-shaped tooth, the arc-shaped tooth of described single tooth gear (6) is arranged in groove (13), and arc-shaped tooth is line with the groove face of groove (13) and contacts, described worm screw (3) is when moving left and right, single tooth gear (6) is done corresponding rotation, make the upper arc-shaped tooth of single tooth gear (6) carry out corresponding conversion with the position that its line of the flank of tooth of sheave groove contacts, described single tooth gear (6) is connected with gear shaft (7), tooth sector (8) is installed on described gear shaft (7), described tooth sector (8) is in transmission connection with coupling shaft (2).
2. according to the overload protecting mechanism of claim 1 described a kind of electric actuator; it is characterized in that: described coupling shaft (2) the other end is provided with controlling device; described controlling device and coupling shaft (2) are in transmission connection; described controlling device comprises gear (9); described gear (9) top is provided with adjusting screw (11); the outer surface portion of described gear (9) is arranged with tooth, the tooth on described gear (9) and gear ＇ (10) engagement, and described gear ＇ (10) is connected with cam (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310052361.6A CN103104672B (en) | 2013-02-18 | 2013-02-18 | Electric actuator overload protection mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310052361.6A CN103104672B (en) | 2013-02-18 | 2013-02-18 | Electric actuator overload protection mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104672A true CN103104672A (en) | 2013-05-15 |
| CN103104672B CN103104672B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310052361.6A Active CN103104672B (en) | 2013-02-18 | 2013-02-18 | Electric actuator overload protection mechanism |
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| CN (1) | CN103104672B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115979488A (en) * | 2023-03-21 | 2023-04-18 | 苏州成科自控设备有限公司 | Detection device, system and method for output torque of actuator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059879A (en) * | 1988-06-28 | 1991-10-22 | Nippon Gear Co., Ltd. | Electric actuator control apparatus |
| CN2634196Y (en) * | 2003-06-27 | 2004-08-18 | 温州凯斯通仪表阀门制造有限公司 | Excutor travel limitor and overload protector |
| JP2004332759A (en) * | 2003-04-30 | 2004-11-25 | Tsubaki Emerson Co | Electric linear actuator |
| CN2888182Y (en) * | 2006-04-19 | 2007-04-11 | 许晓华 | Gearbox with overload protection |
| CN201443587U (en) * | 2008-12-10 | 2010-04-28 | 富奥汽车零部件股份有限公司 | Gear selecting and shifting actuator of automatic speed changer |
| CN203082153U (en) * | 2013-02-18 | 2013-07-24 | 浙江澳翔自控科技有限公司 | Overload protection mechanism for electric actuator |
-
2013
- 2013-02-18 CN CN201310052361.6A patent/CN103104672B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5059879A (en) * | 1988-06-28 | 1991-10-22 | Nippon Gear Co., Ltd. | Electric actuator control apparatus |
| JP2004332759A (en) * | 2003-04-30 | 2004-11-25 | Tsubaki Emerson Co | Electric linear actuator |
| CN2634196Y (en) * | 2003-06-27 | 2004-08-18 | 温州凯斯通仪表阀门制造有限公司 | Excutor travel limitor and overload protector |
| CN2888182Y (en) * | 2006-04-19 | 2007-04-11 | 许晓华 | Gearbox with overload protection |
| CN201443587U (en) * | 2008-12-10 | 2010-04-28 | 富奥汽车零部件股份有限公司 | Gear selecting and shifting actuator of automatic speed changer |
| CN203082153U (en) * | 2013-02-18 | 2013-07-24 | 浙江澳翔自控科技有限公司 | Overload protection mechanism for electric actuator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115979488A (en) * | 2023-03-21 | 2023-04-18 | 苏州成科自控设备有限公司 | Detection device, system and method for output torque of actuator |
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| CN103104672B (en) | 2015-04-22 |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cai Dongwu Inventor after: Cai Dongmin Inventor after: Chen Jilue Inventor after: Long Gangcheng Inventor after: He Qingxi Inventor after: Xiang Xiaojie Inventor before: Cai Dongwu Inventor before: Cai Dongmin Inventor before: Chen Jilue Inventor before: Long Gangcheng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CAI DONGWU CAI DONGMIN CHEN JILVE LONG GANGCHENG TO: CAI DONGWU CAI DONGMIN CHEN JILVE LONG GANGCHENG HE QINGXI XIANG XIAOJIE |
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Effective date of registration: 20220922 Address after: Building 2, No. 111, Shengxin South Road, Nanxiang Town, Jiading District, Shanghai, 201802 Patentee after: SHANGHAI JINXIANG INSTRUMENT TECHNOLOGY CO.,LTD. Patentee after: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. Address before: No. 2 Industrial Zone, Feiyunjiang Farm, Dongshan Street, Ruian City, Wenzhou City, Zhejiang Province, 325200 Patentee before: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20221014 Address after: No. 2 Industrial Zone, Feiyunjiang Farm, Dongshan Street, Ruian City, Wenzhou City, Zhejiang Province, 325200 Patentee after: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. Address before: Building 2, No. 111, Shengxin South Road, Nanxiang Town, Jiading District, Shanghai, 201802 Patentee before: SHANGHAI JINXIANG INSTRUMENT TECHNOLOGY CO.,LTD. Patentee before: ZHEJIANG AOXIANG AUTO-CONTROL TECHNOLOGY Co.,Ltd. |