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Electric linear actuator with sealed lubrication and overload protection structure

A linear drive, overload protection technology, applied in the direction of structural connections, electric components, electrical components, etc., can solve the problems of wear and damage, easy corrosion of screw mechanisms, lack of overload protection of electric cylinders, etc., to avoid overload damage, prolong life, reduce weight light effect

Inactive Publication Date: 2016-03-23
CHONGQING DONGDENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide an electric linear driver with a sealed lubrication and overload protection structure to solve the technical problems that the screw mechanism of the existing electric cylinder is easy to rust, wear and damage; and to solve the problem that the electric cylinder lacks overload protection. technical problem

Method used

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  • Electric linear actuator with sealed lubrication and overload protection structure
  • Electric linear actuator with sealed lubrication and overload protection structure
  • Electric linear actuator with sealed lubrication and overload protection structure

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] As shown in the figure, the electric linear driver with sealed lubrication and overload protection structure in this embodiment includes a motor 1, a sliding sleeve 2, a screw mechanism that pushes the sliding sleeve to reciprocate linearly, a reducer 3 that connects the motor and the screw mechanism, And the support device for supporting the sliding sleeve, the support device includes a support tube 4 sleeved outside the screw mechanism, one end of the support tube is fixed on the housing of the reducer, and the other end of the support tube is provided with a guide support 5. The guide support includes a bearing seat 51 fixed in the tube hole at the front end of the support tube and a sliding bearing 52 fixed in the bearing seat, and the sliding bearing is linearly slidingly matched with the sliding sleeve;

[0023] The screw mechanism includes...

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Abstract

The invention discloses an electric linear actuator with a sealed lubrication and overload protection structure. The electric linear actuator comprises a motor, a sliding sleeve, a screw mechanism, a ripple expansion pipe, a pull-pressure sensor and a controller, which are in electrical connection. A support device of the electric linear actuator is arranged in the front end of the sliding sleeve; the support device is simple in structure, small in size and light in weight; the manufacturing cost of an electric cylinder can be greatly reduced; a screw is sealed through the ripple expansion pipe; and the problem that the screw is corroded and damaged due to the contact of moisture and the screw can be solved. The pull-pressure sensor is arranged at the end part of the sliding sleeve; and when an object driven by the electric cylinder in the working process is blocked to increase a load of the electric cylinder and the pull-pressure sensor detects that the load of the electric cylinder is increased to an ultimate load, the controller controls the motor to stop working, so that the electric linear actuator can play an overload protection role in the electric cylinder; overload damage is avoided; and the lifetime of the electric cylinder is prolonged.

Description

technical field [0001] The invention relates to a driving device, in particular to an electric cylinder. Background technique [0002] The electric cylinder is a driving device that uses a motor to drive a screw mechanism (such as a sliding screw, a ball screw) to convert rotary motion into linear motion. The structure of the electric cylinder includes a motor, a reducer, a screw mechanism, a sliding sleeve and a supporting structure for supporting the sliding sleeve. [0003] The existing support structure includes a support tube connected to the reducer housing, a guide seat fixed on the front end of the support tube and slidingly matched with the sliding sleeve, and a screw rod for fixing the guide seat. The support structure has many components, complex structure, large volume and high manufacturing cost. [0004] Moreover, the sealing structure of the existing electric cylinder is relatively poor, and the air is easy to directly enter the sliding sleeve so that the sc...

Claims

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Application Information

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IPC IPC(8): H02K7/06H02K11/20
CPCH02K7/06
Inventor 潘高陈永华
Owner CHONGQING DONGDENG TECH
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