CN221263543U - Linear actuator - Google Patents
Linear actuator Download PDFInfo
- Publication number
- CN221263543U CN221263543U CN202322966715.XU CN202322966715U CN221263543U CN 221263543 U CN221263543 U CN 221263543U CN 202322966715 U CN202322966715 U CN 202322966715U CN 221263543 U CN221263543 U CN 221263543U
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- control module
- servo control
- pressure
- pressure compensation
- compensation mechanism
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- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 abstract description 14
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model comprises a servo control module, wherein one end of the servo control module is connected with a pressure compensation mechanism, the other end of the servo control module is provided with a transmission module, rod end bearings are arranged at the tail ends of the pressure compensation mechanism and the transmission module, the servo motor is controlled to rotate after an operation instruction of the servo control module is received by an underwater linear actuator, a harmonic reducer is driven, a ball screw is further driven to rotate to generate linear motion, the servo control module receives double-absolute encoder corner position feedback to realize double-closed-loop cascade control of position and speed, accurate position following precision and quick response are realized, the underwater operation state is ensured after pressure compensation treatment of the pressure compensation mechanism, and the transmission module supports linear motion in a narrow space, so that the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of linear actuators, in particular to a linear actuator.
Background
The existing electric push rod is used in the air, the push rod structure comprises a common motor, a transmission gear, a T-shaped lead screw and a screw nut, the transmission gear is fixed on the sleeved lead screw, a nut is arranged on the lead screw, the electric push rod further comprises a brake assembly and a switch assembly, the self-locking function of the lead screw is achieved through the brake assembly, the switch assembly comprises a mounting seat, a sliding block, a rod piece, a limiting block, an elastic piece and a travel switch, the sliding block is mounted on the mounting seat and moves along the length direction of the lead screw, the rod piece and the sliding block are fixedly connected, and the limiting block is movably connected to the rod piece.
The pressure and sealing problems in the underwater environment seriously affect the use of the linear actuator, and the linear actuator moves inconveniently in a narrow space when performing linear movement, so that the use effect and the working efficiency are affected.
Accordingly, in response to the deficiencies of the prior art, it is necessary to provide a linear actuator that addresses the deficiencies of the prior art.
Disclosure of utility model
The utility model aims to avoid the defects of the prior art and provide a linear actuator, the underwater linear actuator is used for controlling a servo motor to rotate after receiving an operation instruction of a servo control module, driving a harmonic reducer and further driving a ball screw to rotate to generate linear motion, the servo control module is used for receiving the corner position feedback of a double absolute value encoder to realize double closed loop cascade control of position and speed, the accurate position following precision and quick response are realized, the underwater operation state is ensured after the pressure compensation treatment of a pressure compensation mechanism, and a transmission module supports the linear motion in a narrow space, so that the working efficiency is improved.
The above object of the present utility model is achieved by the following means.
Providing a linear actuator, wherein the linear actuator comprises a servo control module, one end of the servo control module is connected and provided with a pressure compensation mechanism, the other end of the servo control module is provided with a transmission module, and rod end bearings are arranged at the tail ends of the pressure compensation mechanism and the transmission module;
The servo control module comprises a pressure-resistant shell, a motor driver is arranged in the pressure-resistant shell, a servo motor is connected to the motor driver, a double absolute value encoder and a harmonic reducer are respectively arranged on the servo pad machine, and a brake is connected to the motor driver.
Specifically, the transmission module comprises an oil-filled sealing shell, a ball screw is arranged in the oil-filled sealing shell, a connecting block is arranged outside the oil-filled sealing shell, and a rod end bearing is arranged on the connecting block.
Specifically, the servo control modules are respectively provided with an electric interface, and the electric interfaces penetrate through the pressure-resistant shell and are connected with the motor driver.
Specifically, the pressure compensation mechanism is internally provided with a pressure shell, the pressure shell is internally provided with a pressure compensator, and the outer end of the pressure shell is provided with a rod end bearing.
Specifically, the transmission module, the servo control module and the pressure compensation mechanism are all arranged in a collinear manner, and the two groups of rod end bearings are respectively arranged at two outermost ends.
According to the utility model, the underwater linear actuator is used for controlling the servo motor to rotate after receiving an operation instruction of the servo control module, driving the harmonic reducer and further driving the ball screw to rotate to generate linear motion, the servo control module is used for receiving the corner position feedback of the double-absolute encoder to realize double-closed-loop cascade control of position and speed, accurate position following precision and quick response are achieved, the underwater running state is ensured after pressure compensation processing of the pressure compensation mechanism, and the transmission module supports linear motion in a narrow space, so that the working efficiency is improved.
Drawings
The utility model is further illustrated by the accompanying drawings, which are not to be construed as limiting the utility model in any way.
Fig. 1 is a front view of a linear actuator of the present utility model.
Fig. 2 is a side view of the linear actuator of the present utility model.
From fig. 1 to 2, it includes:
1. A servo control module;
2. a pressure compensation mechanism;
3. a transmission module;
4. a rod end bearing;
5. a pressure housing;
6. a motor drive;
7. a servo motor;
8. A double absolute value encoder;
9. a harmonic reducer;
10. a brake;
11. An oil-filled sealed housing;
12. an electrical interface;
13. a ball screw;
14. a connecting block;
15. a pressure housing;
16. A pressure compensator.
Detailed Description
The utility model will be further described with reference to the following examples.
Example 1.
As shown in fig. 1-2, a linear actuator is provided, which comprises a servo control module 1, wherein one end of the servo control module 1 is connected with and provided with a pressure compensation mechanism 2, the other end of the servo control module 1 is provided with a transmission module 3, and rod end bearings 4 are respectively arranged at the ends of the pressure compensation mechanism 2 and the transmission module 3.
The servo control module 1 is used for driving and controlling the transmission module 3 to perform linear telescopic motion, the pressure compensation mechanism 2 connected to the outer side of the servo control module 1 can play a role in pressure compensation and sealing underwater, and the pressure compensation mechanism 2 is convenient for external mechanical connection with rod end bearings 4 arranged at two ends of the transmission module 3.
The servo control module 1 comprises a pressure-resistant shell 5, a motor driver 6 is arranged in the pressure-resistant shell 5, a servo motor 7 is connected to the motor driver, a double absolute value encoder 8 and a harmonic reducer 9 are respectively arranged on the servo pad machine, and a brake 10 is connected to the motor driver.
The pressure-resistant housing 5 can provide pressure resistance under the pressure-resistant housing, ensures the safety of internally mounted components, and the motor driver 6 can drive and rotate the servo motor 7 after supplying power, simultaneously controls and operates the brake 10, and drives the harmonic reducer 9 after receiving the instruction, thereby driving the ball screw 13 to rotate and move linearly, and the servo control module 1 receives the feedback of the rotation angle position of the double absolute encoder 8 to realize double closed loop cascade control of position and speed, thereby having accurate position following precision and quick response and being convenient for the linear movement after external mechanical connection.
The transmission module 3 comprises an oil-filled sealing shell 11, a ball screw 13 is arranged in the oil-filled sealing shell 11, a connecting block 14 is arranged outside the oil-filled sealing shell 11, and a rod end bearing 4 is arranged on the connecting block 14.
The ball screw 13 is connected with the nut and the push rod, can control the push rod to linearly stretch and retract during movement, and the connecting block 14 at the top end of the push rod can drive the rod end bearing 4 on the connecting block to move so as to perform mechanical movement after connection.
The servo control module 1 is respectively provided with an electric interface 12, the electric interface 12 penetrates through the pressure-resistant shell 5 and is connected with the motor driver 6 mutually, the motor driver 6 can acquire electric energy through the electric interface 12, and the electric interface 12 has a sealing effect and prevents leakage in an underwater environment.
The pressure compensating mechanism 2 is internally provided with a pressure housing 15, the pressure housing 15 is internally provided with a pressure compensator 16, and the outer end of the pressure housing 15 is provided with a rod end bearing 4.
The transmission module 3, the servo control module 1 and the pressure compensation mechanism 2 are all arranged in a collinear way, the two groups of rod end bearings 4 are respectively arranged at two outermost ends, the transmission module 3, the servo control module 1 and the pressure compensation mechanism 2 which are arranged in a collinear way can be lifted at the accuracy during linear movement, and the two groups of rod end shafts can be conveniently connected with external machinery on the basis of the collineation.
In the production process, the underwater linear actuator is used for controlling the servo motor 7 to rotate after receiving an operation instruction of the servo control module 1, driving the harmonic reducer 9 and further driving the ball screw 13 to rotate to generate linear motion, the servo control module 1 is used for receiving the angular position feedback of the double absolute value encoder 8 to realize double closed loop cascade control of position and speed, accurate position following precision and quick response are achieved, the underwater operation state is guaranteed after pressure compensation processing of the pressure compensation mechanism 2, and the transmission module 3 supports linear motion in a narrow space, so that the working efficiency is improved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.
Claims (5)
1. The linear executor, its characterized in that: the device comprises a servo control module, wherein one end of the servo control module is connected with and provided with a pressure compensation mechanism, the other end of the servo control module is provided with a transmission module, and rod end bearings are arranged at the tail ends of the pressure compensation mechanism and the transmission module;
The servo control module comprises a pressure-resistant shell, a motor driver is arranged in the pressure-resistant shell, a servo motor is connected to the motor driver, a double absolute value encoder and a harmonic reducer are respectively arranged on the servo pad, and a brake is connected to the motor driver.
2. The linear actuator of claim 1, wherein: the transmission module comprises an oil-filled sealing shell, a ball screw is arranged in the oil-filled sealing shell, a connecting block is arranged outside the oil-filled sealing shell, and the rod end bearing is arranged on the connecting block.
3. The linear actuator of claim 1, wherein: and the servo control module is respectively provided with an electric interface, and the electric interface penetrates through the pressure-resistant shell and is connected with the motor driver.
4. The linear actuator of claim 1, wherein: the pressure compensation mechanism is internally provided with a pressure shell, the pressure shell is internally provided with a pressure compensator, and the outer end of the pressure shell is provided with a rod end bearing.
5. The linear actuator of claim 1, wherein: the transmission module, the servo control module and the pressure compensation mechanism are all arranged in a collinear way, and the two groups of rod end bearings are respectively arranged at the two outermost ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322966715.XU CN221263543U (en) | 2023-11-03 | 2023-11-03 | Linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322966715.XU CN221263543U (en) | 2023-11-03 | 2023-11-03 | Linear actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221263543U true CN221263543U (en) | 2024-07-02 |
Family
ID=91651681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322966715.XU Active CN221263543U (en) | 2023-11-03 | 2023-11-03 | Linear actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221263543U (en) |
-
2023
- 2023-11-03 CN CN202322966715.XU patent/CN221263543U/en active Active
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