CN115076437A - Direct-connected torque transmission mechanism and application method thereof - Google Patents
Direct-connected torque transmission mechanism and application method thereof Download PDFInfo
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- CN115076437A CN115076437A CN202210787642.5A CN202210787642A CN115076437A CN 115076437 A CN115076437 A CN 115076437A CN 202210787642 A CN202210787642 A CN 202210787642A CN 115076437 A CN115076437 A CN 115076437A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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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
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention belongs to the technical field of valve electric actuators, and particularly relates to a direct-connected torque transmission mechanism and a using method thereof, wherein the direct-connected torque transmission mechanism comprises a torque shaft connected with an actuator, and the actuator is used for driving the torque shaft to slide on a support; the bracket is connected with a protective cover, and a torque sensor is arranged in the protective cover; the torque sensor comprises a potentiometer and a conversion module electrically connected with the potentiometer; the conversion module is electrically connected with the control module; the control module is electrically connected with the actuator; the input shaft of the potentiometer is fixedly connected with a gear which is meshed with a rack arranged on the torque shaft; the torque shaft is used for driving the gear to rotate so as to change the resistance value of the potentiometer; the conversion module is used for converting the voltage value output by the potentiometer into an analog quantity value; the control module is used for identifying the analog quantity value calibration torque value and controlling the actuator to start and stop according to the torque value.
Description
Technical Field
The invention belongs to the technical field of valve electric actuators, and particularly relates to a direct-connected torque transmission mechanism and a using method thereof.
Background
For an electric actuator having a torque detection function, a torque transmission device is an essential component. The moment transmission mechanisms adopted by the prior products comprise a crank type moment transmission mechanism, a pressure type moment transmission mechanism and an inductance type moment transmission mechanism. The crank type torque transmission mechanism is based on the principle that the worm displaces through compression of a disc spring and then drives a crank throw to transmit the displacement to a torque transmission gear, and is purely mechanical transmission, complex in transmission structure and complex in debugging. The principle of the pressure type transmission mechanism is that the worm generates displacement to enable the sensor to deform, an output signal is sent to the module, the pressure sensor is expensive, different pressure sensors are required to be customized according to different torques, and the pressure type transmission mechanism is diversified and complex in debugging. The working principle of the inductance type transmission mechanism is that the motor is converted into an analog quantity signal through detecting current after being electrified and then is transmitted to the module, the manufacturing cost of the motor is high, the signal is unstable, the change of starting current, normal running current and locked rotor current of the motor is large, the control is difficult, the influence of voltage and environment temperature is large, and the application is few in practical application.
Disclosure of Invention
In view of the above-mentioned shortcomings, the present invention provides a direct-connected torque transmission mechanism and a method for using the same.
The invention provides the following technical scheme:
a direct-connected torque transmission mechanism comprises a torque shaft connected with an actuator, wherein the actuator is used for driving the torque shaft to slide on a bracket;
the bracket is connected with a protective cover, and a torque sensor is arranged in the protective cover;
the torque sensor comprises a potentiometer and a conversion module electrically connected with the potentiometer; the conversion module is electrically connected with the control module; the control module is electrically connected with the actuator;
the input shaft of the potentiometer is fixedly connected with a gear which is meshed with a rack arranged on the torque shaft;
the torque shaft is used for driving the gear to rotate so as to change the resistance value of the potentiometer;
the conversion module is used for converting the voltage value output by the potentiometer into an analog quantity value;
the control module is used for identifying the analog quantity value calibration torque value and controlling the actuator to start and stop according to the torque value.
The control module is electrically connected with a remote controller.
Analog quantity value X D ＝TV K T is constant, S is rated voltage value of potentiometer, V K The voltage value output by the potentiometer.
Moment-off calibration value X TC ＝TV TC /S，V TC The voltage value output by the potentiometer is the voltage value output when the calibration is turned off;
moment opening calibration value X TO ＝TV TO /S，V TO The voltage value is output by the potentiometer when the opening is calibrated;
intermediate equilibrium value X M ＝TV M /S，V M The voltage value output by the potentiometer when the gear does not rotate.
When the actuator is in the off direction, X D ＜X M ；
When the actuator is in the open direction, X D ＞X M ；
When the gear is not rotating, X D ＝X M ；
Closing direction set value T CS ＝(X M -X TC )/(X M -X TC )×100％；
Opening direction set value T OS ＝(X TO -X M )/(X TO -X M )×100％；
When the actuator is in the closing direction, the closing direction detection value T C ＝(X M -X D )/(X M -X TC ) X 100%, if T C ＞T CS If the torque is over, the control module controls the actuator to stop;
when the actuator is in the opening direction, the opening direction detection value T O ＝(X D -X M )/(X TO -X M ) X 100%, if T O ＞T OS And if the torque is over, the control module controls the actuator to stop.
S＝5V，T＝1024。
A use method of the direct connection type torque transmission mechanism comprises the following steps:
s1, connecting the torque shaft with a worm of an actuator;
s2, inputting a calibration value of the closing force to the actuator through a remote controller, and enabling the actuator to drive the torque shaft to drive the gear to rotate clockwise to obtain a calibration value of the closing force of the torque;
inputting an opening force calibration value to the actuator through a remote controller, and enabling the actuator to drive a torque shaft to drive a gear to rotate anticlockwise to obtain a torque opening calibration value;
enabling the actuator to be in an unstressed state to obtain an intermediate balance value;
s3, connecting the actuator with the valve, and detecting a closing detection value when the actuator is in a closing direction and an opening detection value when the actuator is in an opening direction;
comparing the closing direction detection value with a closing direction set value, and if the closing direction detection value is larger than the closing direction set value, controlling the actuator to stop by the control module;
and comparing the opening direction detection value with the opening direction set value, and if the opening direction detection value is greater than the opening direction set value, controlling the actuator to stop by the control module.
The invention has the beneficial effects that:
this product adopts the direct-connected type structure, and the drunkenness directly drives the pinion and removes when atress through the worm, and the gear that drives the moment inductor is rotatory again to change the voltage value through changing resistance, the moment inductor turns into analog value with the voltage value, and sends analog value to control module, control module marks the analog value torque value, judges whether cross the moment according to the torque value, makes the executor shut down when crossing the moment, thereby carries out the moment protection to the executor.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a torque shaft and gear engagement;
FIG. 3 is a schematic diagram of the control module connections of the present invention.
Labeled as: the device comprises a support 101, a torque shaft 102, a gear 103, a protective cover 104, a potentiometer 105, a rack 106, a control module 107, an actuator 108, a remote controller 109, a torque sensor 110 and a conversion module 111.
Detailed Description
As shown in fig. 1 to 3, a direct-coupled torque transmission mechanism includes a torque shaft 102 connected to an actuator 108, where the actuator 108 is configured to drive the torque shaft 102 to slide on a bracket 101, and specifically, the torque shaft 102 is connected to a worm of the actuator 108 in a transmission manner, and the worm may drive the torque shaft 102 to displace.
The bracket 101 is connected with a protective cover 104, and a torque sensor 110 is installed in the protective cover 104. The torque sensor 110 includes a potentiometer 105 and a conversion module 111 electrically connected to the potentiometer 105. The conversion module 111 is electrically connected to the control module 107, and the control module 107 is electrically connected to the actuator 108. The control module 107 is electrically connected to a remote controller 109. The value of the input force of the actuator 108 can be set by the remote controller 109.
The input shaft of the potentiometer 105 is fixedly connected with a gear 103, and the gear 103 is meshed with a rack 106 arranged on the torque shaft 102. The worm of the actuator 108 may move the torque shaft 102 back and forth, thereby causing the gear 103 to rotate in either a forward or reverse direction.
When the gear 103 rotates, the input shaft of the potentiometer 105 can be driven to rotate, so that the resistance value of the potentiometer 105 can be changed. When the resistance value of the potentiometer 105 is changed, the output voltage value of the potentiometer 105 changes accordingly.
The conversion module 111 is used for converting the voltage value output by the potentiometer 105 into an analog value. Specifically, the analog quantity value X D ＝TV K (ii)/S, wherein T is a constant, S is a rated voltage value of the potentiometer 105, and V K Is the voltage value output by the potentiometer 105. In this embodiment, let S be 5V and T be 1024. When V is K When 2.5V, the analog value X D ＝512。
The control module 107 is used for identifying the analog quantity value calibration torque value and controlling the actuator 108 to start and stop according to the torque value. Specifically, the torque off-direction calibration value X TC ＝TV TC /S，V TC For the voltage value output by the potentiometer 105 during the off-calibration, the torque is opened to the calibration value X TO ＝TV TO /S，V TO For the voltage value output by the potentiometer 105 during the opening calibration, the intermediate equilibrium value X M ＝TV M /S，V M Which is the voltage value output by the potentiometer 105 when the gear 103 is not rotating. In the embodiment, when the direction is closed, the corresponding closing force is set through the remote controller 109 according to the type of the actuator 108, the worm moves in the closing direction, the driving torque shaft 102 moves along with the worm, the gear 103 rotates clockwise, and the V at the moment is measured TC Calculating to obtain a moment relation calibration value at the moment; when the direction is opened, the corresponding setting is carried out through the remote controller 109 according to the type of the actuator 108The worm moves in the opening direction, the torque shaft 102 is driven to move, the gear 103 rotates counterclockwise, and the V is measured TO And calculating to obtain the opening calibration value of the moment at the moment. When the input force is not set by the remote controller 109, the actuator 108 is in an unstressed state, and the resistance of the potentiometer 105 is at an intermediate value, so that an intermediate equilibrium value is obtained from the voltage value output by the potentiometer 105 when the gear 103 is not rotating.
When actuator 108 is in the off direction, X D ＜X M (ii) a When the actuator 108 is in the open orientation, X D ＞X M (ii) a When gear 103 is not rotating, X D ＝X M . Closing direction set value T CS ＝(X M -X TC )/(X M -X TC ) X 100%; opening direction set value T OS ＝(X TO -X M )/(X TO -X M )×100％。
The method for controlling the actuator 108 to start and stop according to the torque value is as follows:
when the actuator 108 is in the off direction, the off direction detection value T C ＝(X M -X D )/(X M -X TC ) X 100%, if T C ＞T CS If the torque is over, the control module 107 controls the actuator 108 to stop;
when the actuator 108 is in the open direction, the open direction detection value T O ＝(X D -X M )/(X TO -X M ) X 100%, if T O ＞T OS Then the over-torque is turned off and the control module 107 controls the actuator 108 to stop.
A use method of a direct-connected torque transmission mechanism comprises the following steps:
s1, connecting the torque shaft 102 with a worm of an actuator 108;
s2, inputting a calibration value of the closing force to the actuator 108 through the remote controller 109, and enabling the actuator 108 to drive the torque shaft 102 to drive the gear 103 to rotate clockwise to obtain the calibration value of the closing force of the torque;
inputting an opening force calibration value to an actuator 108 through a remote controller 109, and enabling the actuator 108 to drive a torque shaft 102 to drive a gear 103 to rotate anticlockwise to obtain a torque opening force calibration value;
making the actuator 108 in an unstressed state to obtain an intermediate balance value;
s3, connecting the actuator 108 with the valve, and detecting a closing detection value when the actuator 108 is in a closing direction and an opening detection value when the actuator 108 is in an opening direction;
comparing the closing direction detection value with a closing direction set value, and if the closing direction detection value is larger than the closing direction set value, controlling the actuator 108 to stop by the control module 107;
the opening detection value is compared with the opening set value, and if the opening detection value is larger than the opening set value, the control module 107 controls the actuator 108 to stop.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A direct-connected torque transmission mechanism is characterized in that: the torque transmission mechanism comprises a torque shaft (102) connected with an actuator (108), wherein the actuator (108) is used for driving the torque shaft (102) to slide on a bracket (101);
the bracket (101) is connected with a protective cover (104), and a torque sensor (110) is arranged in the protective cover (104);
the torque sensor (110) comprises a potentiometer (105) and a conversion module (111) electrically connected with the potentiometer (105); the conversion module (111) is electrically connected with the control module (107); the control module (107) is electrically connected with the actuator (108);
the input shaft of the potentiometer (105) is fixedly connected with a gear (103), and the gear (103) is meshed with a rack (106) arranged on the torque shaft (102);
the torque shaft (102) is used for driving the gear (103) to rotate so as to change the resistance value of the potentiometer (105);
the conversion module (111) is used for converting the voltage value output by the potentiometer (105) into an analog quantity value;
the control module (107) is used for identifying the analog quantity value calibration torque value and controlling the actuator (108) to start and stop according to the torque value.
2. The direct connect torque transmission mechanism of claim 1, wherein: the control module (107) is electrically connected with a remote controller (109).
3. The direct connect torque transmission mechanism of claim 2, wherein:
analog quantity value X D ＝TV K T is a constant, S is a rated voltage value of the potentiometer (105), V K Is the voltage value output by the potentiometer (105).
4. The direct connect torque transmission mechanism of claim 3, wherein:
moment closing direction calibration value X TC ＝TV TC /S，V TC A voltage value outputted to the potentiometer (105) when the calibration is turned off;
moment opening calibration value X TO ＝TV TO /S，V TO Is the voltage value output by the potentiometer (105) during the opening calibration;
intermediate equilibrium value X M ＝TV M /S，V M The voltage value is output by the potentiometer (105) when the gear (103) does not rotate.
5. The direct connect torque transmission mechanism of claim 4, wherein:
when the actuator (108) is in the off direction, X D ＜X M ；
When the actuator (108) is in the open orientation, X D ＞X M ；
When the gear (103) is not rotating, X D ＝X M ；
Off set value T CS ＝(X M -X TC )/(X M -X TC )×100％；
Opening direction set value T OS ＝(X TO -X M )/(X TO -X M )×100％；
When the actuator (108) is in the off direction, the off direction detection value T C ＝(X M -X D )/(X M -X TC ) X 100%, if T C ＞T CS If the torque is over-torque, the control module (107) controls the actuator (108) to stop;
when the actuator (108) is in the open direction, the open direction detection value T O ＝(X D -X M )/(X TO -X M ) X 100%, if T O ＞T OS If the torque is over-torque, the control module (107) controls the actuator (108) to stop.
6. The direct connect torque transmission mechanism of claim 5, wherein: S-5V, T-1024.
7. Use of a direct-coupled torque transmission mechanism according to claim 6, characterized in that it comprises the following steps:
s1, connecting the torque shaft (102) with a worm of an actuator (108);
s2, inputting a calibration value of the closing force to the actuator (108) through the remote controller (109), and enabling the actuator (108) to drive the torque shaft (102) to drive the gear (103) to rotate clockwise to obtain a calibration value of the closing force of the torque;
inputting an opening force calibration value to an actuator (108) through a remote controller (109), and enabling the actuator (108) to drive a torque shaft (102) to drive a gear (103) to rotate anticlockwise to obtain a torque opening calibration value;
enabling an actuator (108) to be in an unstressed state to obtain an intermediate balance value;
s3, connecting the actuator (108) with the valve, and detecting the closing detection value when the actuator (108) is in the closing direction and the opening detection value when the actuator (108) is in the opening direction;
comparing the closing direction detection value with a closing direction set value, and if the closing direction detection value is larger than the closing direction set value, controlling an actuator (108) to stop by a control module (107);
the opening direction detection value is compared with the opening direction set value, and if the opening direction detection value is larger than the opening direction set value, the control module (107) controls the actuator (108) to stop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787642.5A CN115076437B (en) | 2022-07-04 | 2022-07-04 | Direct-connection type torque transmission mechanism and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787642.5A CN115076437B (en) | 2022-07-04 | 2022-07-04 | Direct-connection type torque transmission mechanism and application method thereof |
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| Publication Number | Publication Date |
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| CN115076437A true CN115076437A (en) | 2022-09-20 |
| CN115076437B CN115076437B (en) | 2024-05-14 |
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| CN202210787642.5A Active CN115076437B (en) | 2022-07-04 | 2022-07-04 | Direct-connection type torque transmission mechanism and application method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776169A (en) * | 2010-03-22 | 2010-07-14 | 特福隆集团有限公司 | Nuclear grade valve electric device |
| CN102913663A (en) * | 2012-09-20 | 2013-02-06 | 常州电站辅机总厂有限公司 | Electric control system of electrical executing mechanism of intelligent partial rotary valve |
| CN203730891U (en) * | 2014-02-28 | 2014-07-23 | 常州市环宇电力设备制造有限公司 | Control device of electric valve |
| CN203730587U (en) * | 2014-02-24 | 2014-07-23 | 常州市环宇电力设备制造有限公司 | Motor worm direct-connected mechanism |
| CN104728498A (en) * | 2015-01-12 | 2015-06-24 | 江苏金陵自控技术有限公司 | Electromechanical valve electric device motor moment protection device and control circuit thereof |
| US20200124198A1 (en) * | 2018-10-19 | 2020-04-23 | Flowserve Management Company | Electronic valve actuator with predictive self-calibrating torque controller |
| KR102213917B1 (en) * | 2020-10-22 | 2021-02-08 | (주)케이.브이.에이 | The Electric actuator for two-way torque |
-
2022
- 2022-07-04 CN CN202210787642.5A patent/CN115076437B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776169A (en) * | 2010-03-22 | 2010-07-14 | 特福隆集团有限公司 | Nuclear grade valve electric device |
| CN102913663A (en) * | 2012-09-20 | 2013-02-06 | 常州电站辅机总厂有限公司 | Electric control system of electrical executing mechanism of intelligent partial rotary valve |
| CN203730587U (en) * | 2014-02-24 | 2014-07-23 | 常州市环宇电力设备制造有限公司 | Motor worm direct-connected mechanism |
| CN203730891U (en) * | 2014-02-28 | 2014-07-23 | 常州市环宇电力设备制造有限公司 | Control device of electric valve |
| CN104728498A (en) * | 2015-01-12 | 2015-06-24 | 江苏金陵自控技术有限公司 | Electromechanical valve electric device motor moment protection device and control circuit thereof |
| US20200124198A1 (en) * | 2018-10-19 | 2020-04-23 | Flowserve Management Company | Electronic valve actuator with predictive self-calibrating torque controller |
| KR102213917B1 (en) * | 2020-10-22 | 2021-02-08 | (주)케이.브이.에이 | The Electric actuator for two-way torque |
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| CN115076437B (en) | 2024-05-14 |
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