CN209894377U - Intelligent electric actuator torque detection mechanism with clearance elimination device - Google Patents
Intelligent electric actuator torque detection mechanism with clearance elimination device Download PDFInfo
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- CN209894377U CN209894377U CN201920990068.7U CN201920990068U CN209894377U CN 209894377 U CN209894377 U CN 209894377U CN 201920990068 U CN201920990068 U CN 201920990068U CN 209894377 U CN209894377 U CN 209894377U
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- tension spring
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Abstract
An intelligent electric actuator torque detection mechanism with a clearance elimination device relates to the technical field of electric actuators. The worm-gear type potentiometer comprises a worm fixing shaft, a deep groove ball bearing, a body, a worm sleeve, a worm gear, a disc spring, eccentric crank arm components and potentiometer assemblies, wherein two ends of the worm fixing shaft are axially fixed in the body through the deep groove ball bearing, the worm sleeve is arranged outside the worm fixing shaft and is connected with the worm gear in a matched mode, the disc spring is arranged at two ends of the worm sleeve, the disc spring is arranged at two ends of the worm fixing shaft, one end of the worm sleeve is provided with a worm sleeve ring groove, the eccentric crank arm components comprise an eccentric shaft, the eccentric crank arm components are arranged in the worm sleeve ring groove through the eccentric shaft, and one side of each. The intelligent electric actuator torque detection mechanism enables a torque detection mechanism to be in a gapless state no matter in the forward direction or the reverse direction, can accurately detect the torque of the intelligent electric actuator, can carry out dynamic bidirectional detection in real time, and realizes the setting adjustment and overload protection of the output torque of the intelligent electric actuator.
Description
Technical Field
The utility model relates to an electric actuator technical field, concretely relates to intelligent electric actuator moment detection mechanism with clearance elimination device.
Background
The moment setting and protecting function is one of the main functions of the intelligent electric actuator, and the accurate moment detecting mechanism can ensure that the intelligent electric actuator realizes moment setting and overload protection and monitors the moment change of the valve in real time.
The torque detection mode of the intelligent electric actuator applied in the current market is commonly used for adopting electromechanical torque detection: the two ends of the worm are fixed in the body through deep groove ball bearings, under the action of bearing axial component force of the worm wheel, the worm axially moves along with the bearings, meanwhile, a disc spring set on the worm is pushed to be compressed and deformed, an eccentric crank arm component is installed in a worm ring groove through an eccentric shaft, linear displacement of the worm is converted into angular displacement, a sensor and a lever amplification mechanism are adopted, and digital codes are accurately converted and then transmitted to a CPU to be processed, so that high-precision torque parameters are acquired without being influenced by fluctuation of voltage, frequency, temperature and the like. The torque detection mode belongs to a traditional mechanical torque detection mechanism and has the advantages of maturity, stability and reliability. However, the gap exists at the matching position of the eccentric shaft of the eccentric crank arm component and the worm ring groove, so that idle stroke occurs in the mutual switching of the forward rotation and the reverse rotation of the intelligent electric actuator, great fluctuation occurs in torque detection, and the repeated precision of the torque detection is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide an intelligent electric actuator torque detection mechanism with clearance remove device, it can solve intelligent electric actuator torque detection mechanism eccentric crank arm part's eccentric shaft and worm annular cooperation department and have the clearance, lead to intelligent electric actuator forward rotation and the dead-stroke appears in the reversal rotation interconversion to the moment appears and detects very big fluctuation, seriously influences the defect that moment detected repeatability.
In order to achieve the above purpose, the utility model adopts the following technical scheme: it contains worm fixed axle, deep groove ball bearing, body, worm cover, worm wheel, belleville spring, eccentric turning arm part, potentiometre subassembly, deep groove ball bearing axial fixation is passed through at the both ends of worm fixed axle in this body, and the outside of worm fixed axle is provided with the worm cover, the worm cover is connected with the worm wheel cooperation, and the both ends of worm cover are provided with belleville spring, belleville spring installs the both ends at the worm fixed axle, the one end of worm cover is provided with worm cover annular, eccentric turning arm part contains the eccentric shaft, and eccentric turning arm part passes through the eccentric shaft and installs in worm cover annular, one side cooperation of eccentric turning arm part is connected with the potentiometre subassembly.
The eccentric crank arm component further comprises an eccentric crank arm, a torque shaft, a sector gear, a tension spring fixing column and a reset tension spring, the eccentric crank arm is arranged on one side of the eccentric shaft, the torque shaft is vertically arranged at the upper end of the eccentric crank arm, the sector gear is arranged at the upper end of the torque shaft, the tension spring fixing column is arranged on the sector gear in parallel with the torque shaft, the reset tension spring is arranged at the lower end of the tension spring fixing column, one end of the reset tension spring is connected with the tension spring fixing column, and the other end of the reset tension spring is connected with the body through a tension spring mounting column.
The potentiometer assembly comprises a potentiometer pinion meshed with the sector gear, the potentiometer pinion is fixedly connected with a conductive plastic potential, the conductive plastic potential is arranged on a potentiometer support, and the potentiometer support is fixed on the body.
The potentiometer support is provided with a mounting hole which is connected with the torque copper sleeve in a matched mode.
The utility model discloses a theory of operation: in the process of load operation, the worm drives the worm wheel to rotate, the axial component force of the worm wheel pushes the worm sleeve to axially move in the worm fixing shaft, the eccentric crank arm part arranged in the worm sleeve ring groove is driven to rotate, namely, the axial movement displacement of the worm sleeve is converted into the angular displacement of the rotational movement of the eccentric crank arm part, the angular displacement is amplified proportionally through the meshing pair of the sector gear and the potentiometer pinion, the potentiometer detects the amplified angular displacement, and the digital code is accurately converted and then transmitted to the CPU to be processed, so that the acquisition of high-precision torque parameters is realized. And when the load is reduced or disappears, the compressed and deformed disc spring assembly expands to a free state, pushes the worm sleeve to axially move in the opposite direction, and simultaneously drives the eccentric crank arm part arranged in the worm sleeve ring groove to rotate in the opposite direction. And vice versa.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the sector gear is arranged in the eccentric crank arm part, and in the process of forward running, reverse running or mutual switching, the eccentric shaft in the eccentric crank arm part is always attached to one working side surface of the worm sleeve ring groove by the reset tension spring, and no gap exists between the eccentric shaft and the working side surface;
the angular displacement of the rotating motion of the eccentric crank arm part is amplified proportionally through a meshing pair of the sector gear and a potentiometer pinion, the potentiometer detects the amplified angular displacement and transmits the digital code after accurate conversion to a CPU for processing, thereby realizing the acquisition of high-precision torque parameters;
the whole torque detection mechanism is in a gapless state no matter in the forward direction or the reverse direction, can be used for accurately detecting the torque of the intelligent electric actuator and carrying out dynamic bidirectional detection in real time, thereby realizing the setting adjustment and overload protection of the output torque of the intelligent electric actuator.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of an eccentric crank arm assembly according to the present invention;
fig. 3 is a schematic structural diagram of the potentiometer assembly according to the present invention.
Description of reference numerals: the worm fixing shaft 1, the deep groove ball bearing 2, the body 3, the worm sleeve 4, the worm wheel 5, the disc spring 6, the eccentric crank arm component 7, the potentiometer assembly 8, the worm sleeve ring groove 41, the eccentric shaft 71, the eccentric crank arm 72, the torque shaft 73, the sector gear 74, the tension spring fixing column 75, the reset tension spring 76, the torque copper sleeve 77, the potentiometer pinion 81, the conductive plastic potentiometer 82 and the potentiometer support 83.
Detailed Description
Referring to fig. 1 to fig. 3, the technical solution adopted by the present embodiment is: it contains worm fixed axle 1, deep groove ball bearing 2, body 3, worm cover 4, turbine 5, belleville spring 6, eccentric turning arm part 7, potentiometre subassembly 8, the both ends of worm fixed axle 1 are passed through deep groove ball bearing 2 axial fixity in body 3, and the outside of worm fixed axle 1 is provided with worm cover 4, worm cover 4 is connected with worm wheel 5 cooperation, and the both ends of worm cover 4 are provided with belleville spring 6, the both ends at worm fixed axle 1 are established to belleville spring 6 cover, the one end of worm cover 4 is provided with worm cover annular 41, eccentric turning arm part 7 contains eccentric shaft 71, and eccentric turning arm part 7 passes through eccentric shaft 71 and installs in worm cover annular 41, one side cooperation of eccentric turning arm part 7 is connected with potentiometre subassembly 8.
The eccentric crank arm part 7 further comprises an eccentric crank arm 72, a torque shaft 73, a sector gear 74, a tension spring fixing column 75 and a reset tension spring 76, the eccentric crank arm 72 is arranged on one side of the eccentric shaft 71, the torque shaft 73 is vertically arranged at the upper end of the eccentric crank arm 72, the sector gear 74 is arranged at the upper end of the torque shaft 73, the tension spring fixing column 75 which is arranged in parallel with the torque shaft 73 is arranged on the sector gear 74, the reset tension spring 76 is arranged at the lower end of the tension spring fixing column 75, one end of the reset tension spring 76 is connected with the tension spring fixing column 75, and the other end of the reset tension spring 76 is connected with the body 3 through the tension spring mounting. One end of a reset tension spring 76 is connected with a tension spring fixing column 75 fixed on the sector gear 74, and the other end is fixed in the body 3 through a tension spring mounting upright post; the sector gear 74 is installed in the eccentric crank arm member 7, and the eccentric shaft 71 in the eccentric crank arm member 7 is always attached to one working side surface of the worm ring groove 41 by the return tension spring 76 without any gap therebetween in both the forward and reverse operations or the switching process.
In the specific implementation, during the load operation, the worm drives the worm wheel 5 to rotate, the axial component force of the worm wheel 5 pushes the worm sleeve 4 to axially move in the worm fixing shaft 1, the eccentric crank arm part 7 installed in the worm sleeve ring groove 41 is driven to rotate, namely, the axial movement displacement of the worm sleeve 4 is converted into the angular displacement of the rotational movement of the eccentric crank arm part 7, the angular displacement is amplified in proportion through the meshing pair of the sector gear 74 and the potentiometer pinion 81, the potentiometer detects the amplified angular displacement, and the digital code is accurately converted and then transmitted to the CPU for processing, so that the acquisition of high-precision torque parameters is realized. And in the axial movement process of the worm sleeve 4, the belleville springs 6 at the two ends of the worm fixing shaft 1 are pushed to compress and deform simultaneously, when the load is reduced or disappears, the compressed and deformed belleville spring 6 assembly is expanded to a free state, the worm sleeve 4 is pushed to axially move in the opposite direction, and meanwhile, the eccentric crank arm part 7 installed in the worm sleeve ring groove 41 is driven to rotate in the opposite direction. And vice versa.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. An intelligent electric actuator moment detection mechanism with clearance elimination device, its characterized in that: it contains worm fixed axle, deep groove ball bearing, body, worm cover, worm wheel, belleville spring, eccentric turning arm part, potentiometre subassembly, deep groove ball bearing axial fixation is passed through at the both ends of worm fixed axle in this body, and the outside of worm fixed axle is provided with the worm cover, the worm cover is connected with the worm wheel cooperation, and the both ends of worm cover are provided with belleville spring, belleville spring installs the both ends at the worm fixed axle, the one end of worm cover is provided with worm cover annular, eccentric turning arm part contains the eccentric shaft, and eccentric turning arm part passes through the eccentric shaft and installs in worm cover annular, one side cooperation of eccentric turning arm part is connected with the potentiometre subassembly.
2. The intelligent electric actuator torque detection mechanism with gap elimination device of claim 1, wherein: the eccentric crank arm component further comprises an eccentric crank arm, a torque shaft, a sector gear, a tension spring fixing column and a reset tension spring, the eccentric crank arm is arranged on one side of the eccentric shaft, the torque shaft is vertically arranged at the upper end of the eccentric crank arm, the sector gear is arranged at the upper end of the torque shaft, the tension spring fixing column is arranged on the sector gear in parallel with the torque shaft, the reset tension spring is arranged at the lower end of the tension spring fixing column, one end of the reset tension spring is connected with the tension spring fixing column, and the other end of the reset tension spring is connected with the body through a tension spring mounting column.
3. The intelligent electric actuator torque detection mechanism with gap elimination device of claim 2, wherein: the potentiometer assembly comprises a potentiometer pinion meshed with the sector gear, the potentiometer pinion is fixedly connected with a conductive plastic potential, the conductive plastic potential is arranged on a potentiometer support, and the potentiometer support is fixed on the body.
4. The intelligent electric actuator torque detection mechanism with gap elimination device of claim 3, wherein: the potentiometer support is provided with a mounting hole which is connected with the torque copper sleeve in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990068.7U CN209894377U (en) | 2019-06-28 | 2019-06-28 | Intelligent electric actuator torque detection mechanism with clearance elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990068.7U CN209894377U (en) | 2019-06-28 | 2019-06-28 | Intelligent electric actuator torque detection mechanism with clearance elimination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209894377U true CN209894377U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920990068.7U Active CN209894377U (en) | 2019-06-28 | 2019-06-28 | Intelligent electric actuator torque detection mechanism with clearance elimination device |
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| Country | Link |
|---|---|
| CN (1) | CN209894377U (en) |
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2019
- 2019-06-28 CN CN201920990068.7U patent/CN209894377U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 utility model: An intelligent torque detection mechanism of electric actuator with clearance elimination device Effective date of registration: 20220620 Granted publication date: 20200103 Pledgee: The Bank of Shanghai branch Caohejing Limited by Share Ltd. Pledgor: FLOWINN (SHANGHAI) FLUID POWER EQUIPMENT CO.,LTD. Registration number: Y2022310000069 |
|
| 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: 20230413 Granted publication date: 20200103 Pledgee: The Bank of Shanghai branch Caohejing Limited by Share Ltd. Pledgor: FLOWINN (SHANGHAI) FLUID POWER EQUIPMENT CO.,LTD. Registration number: Y2022310000069 |
|
| 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 utility model: An intelligent torque detection mechanism for electric actuators with clearance elimination device Effective date of registration: 20230506 Granted publication date: 20200103 Pledgee: The Bank of Shanghai branch Caohejing Limited by Share Ltd. Pledgor: FLOWINN (SHANGHAI) FLUID POWER EQUIPMENT CO.,LTD. Registration number: Y2023310000164 |