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Linear-motion electric actuating mechanism

An electric actuator and straight-stroke technology, applied to engine components, mechanical equipment, valve details, etc., can solve the problems of unstable positioning, installation and assembly, complex mechanical structure, high cost, etc., and achieve stable spatial positioning, convenient and reliable installation and assembly , Simple and reasonable structure

Inactive Publication Date: 2016-09-21
TIANJIN JINDA ACTUATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the length of the bracket in the existing actuator structure is fixed, which cannot adapt to the adjustment length of various types of actuators. The installation and assembly, the mechanical structure are more complicated, the positioning is unstable, and the cost is high.

Method used

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  • Linear-motion electric actuating mechanism

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Embodiment Construction

[0012] In order to further understand the content of the invention, characteristics and effects of the present invention, the following examples are described in detail as follows:

[0013] see figure 1 , the present invention includes a first flange 6 and a second flange 8, and a length-adjustable pillar 7 is arranged between the first flange 6 and the second flange 8; An output shaft 1 that can move longitudinally, the upper part of the output shaft 1 is cylindrical, and the lower part is hexagonal columnar. 3 The rolling bearing 4 in the concentric state, the positioning sleeve 5 is arranged under the rolling bearing 4; the bearing cover 2 fixed to the first flange 6 is also included, and the shaft sleeve 3 is arranged in the bearing cover 2.

[0014] It also includes a limit sleeve 10 for limiting the longitudinal position of the output shaft 1, the limit sleeve 10 is arranged between the opening of the first flange 6 and the output shaft 1, and the outside of the limit s...

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Abstract

The invention relates to a linear stroke electric actuator. It includes a first flange and a second flange, and a length-adjustable pillar is arranged between the first flange and the second flange; it also includes an output shaft that passes through the first flange and can move longitudinally. The upper part of the output shaft is cylindrical and the lower part is hexagonal columnar. A shaft sleeve is set on the upper part of the output shaft, a rolling bearing is set on the outer side of the shaft sleeve, and a positioning sleeve is set below the rolling bearing; Bearing cover, the shaft sleeve is arranged in the bearing cover; it also includes a limit sleeve for limiting the longitudinal position of the output shaft, the lower end edge of the limit sleeve extends horizontally inward to form a through hole, and is set at the lower end of the output shaft. There are split nuts for connecting with the valve stem. The invention provides a linear stroke electric actuator with simple mechanical structure, adjustable support length, convenient and reliable installation equipment, stable positioning space and low cost.

Description

technical field [0001] The invention belongs to the technical field of electric actuators, and in particular relates to a linear stroke electric actuator. Background technique [0002] An actuator is a device in an automation technology tool that receives control information and exerts a control effect on a controlled object. The electric actuator is an important part of the electric control system. It converts the DC unified electric signal from the control instrument into the rotation angle or displacement corresponding to the input signal to drive various types of control valves, so as to achieve continuous control production. The flow rate in the process, or simply open and close the valve to control the on-off of the fluid, to achieve the purpose of automatic control of the production process. The electric actuator has the advantages of convenient and easy access to energy, fast signal transmission speed, and long signal transmission distance, and its accuracy and sens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/50
CPCF16K31/50
Inventor 吴健张中远郝家智庞地
Owner TIANJIN JINDA ACTUATOR CO LTD
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