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An inner support multi-stage electric cylinder

A technology of electric cylinders and cylinder barrels, which is applied in the direction of electric components, transmission devices, electromechanical devices, etc., can solve the problems of low power density and low transmission efficiency of trapezoidal screw, and achieve the goal of increasing power density, improving efficiency and reducing transmission links Effect

Active Publication Date: 2020-12-08
BEIJING INST OF SPECIALIZED MACHINERY
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  • Description
  • Claims
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Problems solved by technology

[0002] Multi-stage electric cylinder is one of the important directions of electric cylinder research and development at present. The traditional multi-stage electric cylinder mainly uses trapezoidal screw, but the trapezoidal screw has the disadvantage of low transmission efficiency.
At the same time, other multi-stage electric cylinders currently announced generally adopt the pull-wire type or the bearing support method, and these methods have the disadvantage of low power density.

Method used

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  • An inner support multi-stage electric cylinder
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Embodiment Construction

[0021] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like figure 1 , figure 2 As shown, an internally supported two-stage electric cylinder provided by an embodiment of the present invention includes a power unit 1, a gear box 2, a torsion bar 3, a fixed screw 4, a sliding screw 5, a second-stage push rod 6, and a first-stage push rod. Rod 7, cylinder barrel 8 and push rod head 9.

[0023] Among them, the power unit 1 is connected to the flange of the gearbox 2; inside the gearbox 2 is a parallel gear transmission, which is used to transmit the output torque of the power unit 1 to the torsion bar 3; the torsion bar 3 is used to pass the obtained output torque through The guide key at its end is transmitted to the sliding screw 5, so as to realize the rotary mot...

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Abstract

The invention relates to an inner support multistage electric cylinder, and belongs to the technical field of electric cylinder transmission. According to the inner support multistage electric cylinder, thrust can be directly transmitted to a gear box through lead screws in an inner support mode, and due to the fact that the force transmission link is reduced, the efficiency of a system is improved, and meanwhile the power density of the system is improved. According to the structure, by increasing the number of the sliding lead screws, a two-stage electric cylinder is changed into a three-stage or multistage electric cylinder. Synchronous stretching and retracting of a first-stage push rod and a second-stage push rod can be achieved, and the inner support multistage electric cylinder is suitable for an electric cylinder driven by a planetary roller lead screw and is also suitable for a multistage electric cylinder driven by a ball screw and a trapezoidal lead screw.

Description

technical field [0001] The invention belongs to the technical field of electric cylinder transmission, and in particular relates to an internally supported multistage electric cylinder. Background technique [0002] Multi-stage electric cylinder is one of the important directions of electric cylinder research and development at present. The traditional multi-stage electric cylinder mainly uses trapezoidal screw, but the trapezoidal screw has the disadvantage of low transmission efficiency. At the same time, other multi-stage electric cylinders announced so far generally adopt the pull-wire type or the bearing support method, and these methods have the disadvantage of low power density. Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is: how to realize the transmission function of the multi-stage electric cylinder by using the internal support structure. [0005] (2) Technical solu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H25/20F16H25/24H02K7/116
CPCF16H25/20F16H25/2056F16H25/2204F16H25/2252F16H25/24F16H2025/2059F16H2025/2081H02K7/116
Inventor 张泽安王飞李春萍陈亮曹秀荣
Owner BEIJING INST OF SPECIALIZED MACHINERY
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