CN211791088U - Built-in piston type thin oil lubrication electric servo actuator - Google Patents
Built-in piston type thin oil lubrication electric servo actuator Download PDFInfo
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- CN211791088U CN211791088U CN201922320284.3U CN201922320284U CN211791088U CN 211791088 U CN211791088 U CN 211791088U CN 201922320284 U CN201922320284 U CN 201922320284U CN 211791088 U CN211791088 U CN 211791088U
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Abstract
The utility model discloses a built-in piston thin oil lubrication electric servo actuator, including servo motor, cylinder, jar pole, ball, screw, isolation piston, guide piston, shaft coupling, universal joint. The interior of the electric servo actuator is divided into an oil cavity and an air cavity, the oil cavity is filled with hydraulic oil, and the air cavity is filled with nitrogen; when the lever moves, oil moves in the oil cavity to play a role in lubricating and radiating; meanwhile, the isolation piston moves up and down at the top of the cylinder barrel along with different extension amounts of the cylinder rod, so that oil pressure and air pressure in the cylinder barrel are balanced, and bubbles are prevented from being generated due to oil liquid movement in an oil cavity. The utility model discloses a built-in piston thin oil lubrication electric servo actuator simple structure, it is convenient to maintain, and lubricated radiating effect is good, and the reliability is high, and application prospect is extensive.
Description
Technical Field
The utility model belongs to the technical field of electromechanical actuating mechanism, concretely relates to built-in piston thin oil lubrication electric servo actuator.
Background
The electric servo actuator is an integrated linear actuator obtained by combining a servo motor and a ball screw, and converts the rotary motion of the servo motor into the linear motion of a screw nut and a cylinder rod through the ball screw. By using the servo motor as a power source and combining the high-efficiency transmission of the ball screw, the precise rotating speed control, the revolution control and the torque control of the ball screw are converted into the precise output speed, position and thrust of the electric servo actuator. In view of the advantages of high transmission efficiency, high control precision, long service life, energy conservation, environmental protection and the like, the electric servo actuator is widely applied to the paper making industry, the automobile industry, the electronic industry, the mechanical automation industry, the virtual reality industry and the like. The traditional electric servo actuator mostly adopts a grease lubrication mode, and has the defects of high noise, poor lubrication effect, high heat productivity, complex maintenance and the like.
Disclosure of Invention
The utility model aims at providing a built-in piston thin oil lubrication electric servo actuator to solve the problem that above-mentioned prior art exists, adopt thin oil lubrication's mode to reach better lubrication, radiating effect.
In order to achieve the above object, the present invention provides the following solutions:
the utility model provides a built-in piston type thin oil lubrication electric servo actuator, which comprises a servo motor, a cylinder barrel, a cylinder rod, a ball screw, a nut, an isolation piston, a guide piston, a coupling and a universal joint; the servo motor is arranged at the bottom of the cylinder barrel and is connected with the ball screw through a coupler; the isolation piston is arranged in the cylinder barrel and divides the cylinder barrel into an air cavity and an oil cavity; the cylinder rod is fixedly connected with the screw nut and the guide piston, and the guide piston moves along the inner wall of the cylinder barrel and divides the oil cavity into a rod cavity, a rodless cavity and a cylinder rod inner cavity; and universal joints are arranged at the upper part of the cylinder rod and the bottom of the cylinder barrel.
The cylinder air cavity is filled with nitrogen, the cylinder oil cavity is filled with hydraulic oil, and different working environments are matched by adjusting the pressure intensity of the air cavity and the pressure intensity of the oil cavity; the hydraulic oil is wear-resistant dilute hydraulic oil, and is more favorable for lubrication and heat dissipation.
The guide piston and the bottom of the cylinder rod are both provided with through holes, so that hydraulic oil can move in the rod cavity, the rodless cavity and the inner cavity of the cylinder rod along with the movement of the guide piston, and the functions of lubrication and heat dissipation are achieved.
The isolation piston moves up and down at the top of the cylinder barrel along with different extending amounts of the cylinder rod, and is used for balancing oil pressure and air pressure in the cylinder barrel and avoiding bubbles generated due to oil liquid movement in the oil cavity.
The beneficial effects of the utility model reside in that: compared with the existing electric servo actuator, the hydraulic oil lubrication has good lubrication effect, and the noise generated when the cylinder rod moves is low; the hydraulic oil can move in the cylinder barrel along with the up-and-down movement of the cylinder rod, so that a better heat dissipation effect is achieved; simple structure, convenient maintenance, high reliability and wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 labor.
FIG. 1 is an overall sectional view of an energy-saving piston type thin oil lubricated electric servo actuator; fig. 2 is a sectional view of a cylinder rod.
In the figure: the device comprises a servo motor 1, a cylinder barrel 2, a cylinder rod 3, a ball screw 4, a nut 5, an isolation piston 6, a guide piston 7, a coupling 8, a cylinder barrel universal joint 9, a cylinder rod universal joint 10, an air cavity 11, a rodless cavity 12-1, a rod cavity 12-2, a cylinder rod inner cavity 12-3, a nitrogen hole 13, an oil filling hole 14, a cylinder rod through hole 15 and a guide piston through hole 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a built-in piston thin oil lubrication electric servo actuator to solve the problem that prior art exists.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The embodiment provides a built-in piston type thin oil lubrication electric servo actuator, which comprises a servo motor 1, a cylinder barrel 2, a cylinder rod 3, a ball screw 4, a nut 5, an isolation piston 6, a guide piston 7, a coupler 8, a cylinder barrel universal joint 9 and a cylinder rod universal joint 10, as shown in figure 1; the universal joint 9 is arranged at the bottom of the cylinder barrel 2, and the universal joint 10 is arranged at the top of the cylinder rod 3 and used for fixing the electric servo actuator; the servo motor 1 is arranged at the bottom of the cylinder barrel 2 and is connected with the ball screw 4 through a coupler 8, and the cylinder rod 3 is fixedly connected with the nut 5 and the guide piston 7; the output torque of the servo motor 1 drives the ball screw 4 to rotate, and the ball screw 5 is converted into the linear motion of the cylinder rod 3.
As shown in fig. 1, the isolation piston 6 is installed inside the cylinder 2 and divides the cylinder 2 into an air chamber 11 and an oil chamber 12; the guide piston 7 moves along the inner wall of the cylinder barrel 2 and divides the oil chamber into a rodless chamber 12-1, a rod chamber 12-2 and a cylinder rod inner chamber 12-3. The nitrogen hole 13 and the oil filling hole 14 are used for filling nitrogen and hydraulic oil into the cylinder barrel 11, and the pressure in the air cavity 11 and the pressure in the oil cavity 12 are adjusted to match different working environments.
As shown in figure 1, the isolation piston 6 moves up and down on the top of the cylinder barrel 2 along with the extension of the cylinder rod 3, and is used for balancing the oil pressure and the air pressure in the cylinder barrel 2 and avoiding bubbles generated due to the oil movement in the oil chamber 12.
As shown in figure 2, a cylinder rod through hole 15 and a guide piston through hole 16 are formed in the bottom of the cylinder rod 3 and the guide piston 7, so that hydraulic oil can move along with the guide piston 7 and can move in the rodless cavity 12-1, the rod cavity 12-2 and the cylinder rod inner cavity 12-3, and good lubricating and heat dissipation effects are achieved.
While certain embodiments of the present invention have been described in detail above, those skilled in the art, having the benefit of the teachings and features of this invention, may effect numerous modifications to the described embodiments. Therefore, all such modifications are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a built-in piston thin oil lubrication electric servo actuator which characterized in that: the device comprises a servo motor, a cylinder barrel, a cylinder rod, a ball screw, a nut, an isolation piston, a guide piston, a coupling and a universal joint; the servo motor is arranged at the bottom of the cylinder barrel and is connected with the ball screw through a coupler; the isolation piston is arranged in the cylinder barrel and divides the cylinder barrel into an air cavity and an oil cavity; the cylinder rod is fixedly connected with the screw nut and the guide piston, and the guide piston moves along the inner wall of the cylinder barrel and divides the oil cavity into a rod cavity, a rodless cavity and a cylinder rod inner cavity; and universal joints are arranged at the upper part of the cylinder rod and the bottom of the cylinder barrel.
2. The built-in piston type thin oil lubrication electric servo actuator as claimed in claim 1, wherein: the cylinder air cavity is filled with nitrogen, the cylinder oil cavity is filled with hydraulic oil, and different working environments are matched by adjusting the pressure intensity of the air cavity and the pressure intensity of the oil cavity; the hydraulic oil is wear-resistant dilute hydraulic oil, and is more favorable for lubrication and heat dissipation.
3. The built-in piston type thin oil lubrication electric servo actuator as claimed in claim 1, wherein: the guide piston and the bottom of the cylinder rod are both provided with through holes, so that hydraulic oil can move in the rod cavity, the rodless cavity and the inner cavity of the cylinder rod along with the movement of the guide piston, and the functions of lubrication and heat dissipation are achieved.
4. The built-in piston type thin oil lubrication electric servo actuator as claimed in claim 1, wherein: the isolation piston moves up and down at the top of the cylinder barrel along with different extending amounts of the cylinder rod, and is used for balancing oil pressure and air pressure in the cylinder barrel and avoiding bubbles generated due to oil liquid movement in the oil cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922320284.3U CN211791088U (en) | 2019-12-20 | 2019-12-20 | Built-in piston type thin oil lubrication electric servo actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922320284.3U CN211791088U (en) | 2019-12-20 | 2019-12-20 | Built-in piston type thin oil lubrication electric servo actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211791088U true CN211791088U (en) | 2020-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922320284.3U Expired - Fee Related CN211791088U (en) | 2019-12-20 | 2019-12-20 | Built-in piston type thin oil lubrication electric servo actuator |
Country Status (1)
| Country | Link |
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| CN (1) | CN211791088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288135A (en) * | 2020-02-18 | 2020-06-16 | 燕山大学 | Energy-saving piston type thin oil lubrication electric servo actuator |
-
2019
- 2019-12-20 CN CN201922320284.3U patent/CN211791088U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288135A (en) * | 2020-02-18 | 2020-06-16 | 燕山大学 | Energy-saving piston type thin oil lubrication electric servo actuator |
| CN111288135B (en) * | 2020-02-18 | 2022-08-05 | 燕山大学 | Energy-saving piston type thin oil lubrication electric servo actuator |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 Termination date: 20201220 |