CN210795505U - Electric actuator gear disc dismounting device - Google Patents
Electric actuator gear disc dismounting device Download PDFInfo
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- CN210795505U CN210795505U CN201920980544.7U CN201920980544U CN210795505U CN 210795505 U CN210795505 U CN 210795505U CN 201920980544 U CN201920980544 U CN 201920980544U CN 210795505 U CN210795505 U CN 210795505U
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Abstract
The utility model belongs to the technical field of mechanical assembly, concretely relates to electric actuator toothed disc dismouting device and dismouting method. The utility model discloses the device includes lug, fastening nut, mother board, lifting claw, and the lug welding is put at the central point of mother board, and the lifting claw is installed on the mother board. The utility model discloses can be fast accurate steady reliable dismouting reduction gears planetary gear, effectively avoid threatening personnel and equipment safety's potential risk at the maintenance process.
Description
Technical Field
The utility model belongs to the technical field of mechanical assembly, concretely relates to electric actuator toothed disc dismouting device.
Background
The two units of a project of a certain nuclear power station are provided with 30 Д -type electric actuators in total, the disassembly overhaul period of the electric actuators is 9 years, and in each unit refueling overhaul, at least 2 electric actuators are subjected to comprehensive disassembly overhaul.
This model electric actuator structure is special, and electric actuator output shaft and gear disc transmission shaft are through the transmission of five claw connection, finally transmit the moment of torsion to the valve rod through gear disc output shaft. The gear disc is a planetary gear transmission structure and comprises 4 planetary gears, 1 planetary gear carrier, 1 transmission shaft and 1 output shaft, wherein the planetary gears are sleeved in the planetary gear carrier and are in meshing transmission with the transmission shaft and the inner gear ring gear of the gear disc. The design of the planetary gear mechanism adopts 4 planetary gears, so that the output shaft can be ensured to rotate stably and the stress is uniform under the condition of transmitting larger load. Meanwhile, the planetary gear transmission has the advantages that the power division and the transmission shaft form coaxial transmission and an internal gear pair is reasonably applied, so that the structure of the planetary gear mechanism is very compact, 4 planetary gears uniformly distributed around the transmission shaft share the load together, and the load borne by each gear is smaller. In addition, the bearing capacity of the inner meshing and the space volume of the inner gear are fully utilized structurally, so that the structure is compact and the bearing capacity is high. Because of the symmetry of the planetary gear transmission structure, 4 planetary gears are evenly distributed around the transmission shaft, so that the reaction forces acting on the transmission shaft and the tumbler bearing can be balanced mutually, thereby being beneficial to achieving the effect of improving the transmission efficiency, ensuring the stable motion of the planetary gear transmission, having stronger impact and vibration resistance and more reliable work.
However, while having the above advantages, the planetary gear mechanism has some disadvantages, such as complicated structure, high quality requirement for manufacturing and maintenance, and difficult disassembly and assembly of the planetary gear mechanism due to small volume, small heat dissipation area, and high requirement for lubrication.
In the disassembly and overhaul process of the electric actuator, the upper end cover of the gear disc needs to be opened, the gear disc of the electric actuator is disassembled, 4 planetary gears, 1 planetary gear carrier, 1 transmission shaft and 1 output shaft in the planetary gear mechanism of the gear disc are all disassembled and taken out, and the abrasion conditions of the inner gear ring gear, the planetary gears and the transmission shaft gear ring of the gear disc are inspected after the gear disc is cleaned.
The planet gear and the planet gear carrier are about 40kg, in order to ensure the strength of the planet gear carrier, a lifting point cannot be installed on the opening of the planet gear carrier, in the actual work, because the planet gear, the transmission shaft and the gear of the inner gear ring of the gear disc are in meshing transmission, the gap is small, the quality is large, a proper tool is not needed to disassemble the planetary gear mechanism of the gear disc in the maintenance process, the planetary gear mechanism is disassembled, when the planet gear carrier is lifted, two persons need to exert force for balance, the planet gear carrier is slowly and stably lifted by hands, the jamming phenomenon can be avoided, meanwhile, the controllability of the lifting process is ensured, and the phenomenon that the planet gear carrier suddenly slides down to cause serious damage to the personnel and. The whole process is time-consuming and labor-consuming, and the working efficiency is very low.
Disclosure of Invention
The utility model provides a technical problem:
the utility model provides an electric actuator toothed disc dismouting device, this device stable in structure is reliable, and application method is simple, can be fast accurate steady reliable dismouting reduction gears planetary gear, effectively avoid threatening personnel and equipment safety's potential risk at the maintenance process.
The utility model adopts the technical proposal that:
a gear plate dismounting device of an electric actuator comprises a lifting lug, a fastening nut, a mother plate and a lifting claw, wherein the lifting lug is welded at the central position of the mother plate, and the lifting claw is installed on the mother plate.
The mother board is provided with a hanging claw assembly hole, one end of the hanging claw directly penetrates through the assembly hole on the mother board, and a fastening nut is installed on the hanging claw assembly hole.
The mother board is provided with a lifting claw assembly hole in the circumferential direction, and one end of the lifting claw directly penetrates through the assembly hole in the mother board and is provided with a fastening nut.
After the lifting claws are assembled on the mother board, the fastening nuts are adjusted according to the actual distance between the device and the planet gear carrier, and then the positions of the lifting claws are adjusted.
The utility model has the advantages that:
(1) the utility model provides a gear disc dismounting device of an electric actuator, which has simple structure and convenient use;
(2) the utility model provides a disassembly and assembly device for the gear disc of the electric actuator, which effectively solves the problem that the planet gear of the speed reducing mechanism of the electric actuator is not easy to disassemble and assemble, saves time and labor and has high working efficiency;
(3) the utility model provides a pair of electric actuator toothed disc dismouting device effectively avoids threatening personnel and equipment safety's potential risk at the maintenance process.
Drawings
Fig. 1 is a schematic structural view of a gear disc dismounting device of an electric actuator provided by the present invention;
in the figure: 1-lifting lug, 2-fastening nut, 3-mother board and 4-lifting claw.
Detailed Description
The following describes the device for mounting and dismounting the gear plate of the electric actuator in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model provides a pair of electric actuator toothed disc dismouting device, including lug 1, fastening nut 2, mother board 3, lifting claw 4, lug 1 welds the central point that puts in mother board 3, and it has 4 lifting claw pilot holes to open on the mother board 3, and the pilot hole on mother board 3 is directly passed to the one end of lifting claw 4 to install fastening nut 2, lifting claw 4 assembles behind mother board 3, according to the device and planet carrier actual distance adjustment fastening nut 2, and then the position of adjustment lifting claw 4.
A method for disassembling and assembling a gear disc of an electric actuator comprises the following steps:
step one, opening an upper end cover of a gear disc;
step two, inserting the four lifting claws 4 into four self-made holes on a planet gear carrier respectively;
step three, threading the threaded end of the lifting claw into the mother board 3;
step four, screwing the four fastening nuts 2 into the threads of the lifting claw 4 respectively;
and step five, hooking the chain block on the lifting lug 1, and lifting the planet gear carrier out of the gear plate.
The balance degree of the planetary gear can be adjusted through the four fastening nuts 2 in the lifting process; and (4) after the planet gears and the inner gear ring of the gear plate are checked and repaired, the planet gears are installed back according to a similar method.
Claims (3)
1. The utility model provides an electric actuator toothed disc dismouting device which characterized in that: the device comprises lifting lugs (1), fastening nuts (2), a mother plate (3) and lifting claws (4), wherein the lifting lugs (1) are welded at the central position of the mother plate (3), and the lifting claws (4) are installed on the mother plate (3).
2. The device for disassembling and assembling the gear disc of the electric actuator according to claim 1, wherein: the mother board (3) is provided with a hanging claw assembly hole, one end of the hanging claw (4) directly penetrates through the assembly hole on the mother board (3) and is provided with a fastening nut (2).
3. The device for disassembling and assembling the gear disc of the electric actuator according to claim 2, wherein: 4 lifting claw assembly holes are formed in the circumferential direction of the mother board (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980544.7U CN210795505U (en) | 2019-06-27 | 2019-06-27 | Electric actuator gear disc dismounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980544.7U CN210795505U (en) | 2019-06-27 | 2019-06-27 | Electric actuator gear disc dismounting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210795505U true CN210795505U (en) | 2020-06-19 |
Family
ID=71241384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920980544.7U Active CN210795505U (en) | 2019-06-27 | 2019-06-27 | Electric actuator gear disc dismounting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN210795505U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203808A (en) * | 2019-06-27 | 2019-09-06 | 江苏核电有限公司 | A kind of Electric Actuator toothed disc attaching/detaching apparatus and assembly and disassembly methods |
-
2019
- 2019-06-27 CN CN201920980544.7U patent/CN210795505U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203808A (en) * | 2019-06-27 | 2019-09-06 | 江苏核电有限公司 | A kind of Electric Actuator toothed disc attaching/detaching apparatus and assembly and disassembly methods |
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