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A double-layer ball screw electric cylinder

A ball screw and ball screw pair technology, applied in the direction of transmission, lifting device, belt/chain/gear, etc., can solve the problems of large size of electric cylinder, large diameter of ball screw pair, large installation space, etc. , to achieve the effect of compact structure, improved bearing capacity and large lifting load

Active Publication Date: 2022-05-10
XIAN HUA OU PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, electric cylinders use a single ball screw pair as the transmission component, so the diameter of the ball screw pair needs to be made large, which is difficult to process and expensive. In addition, the electric cylinder has a large size and requires installation space. also big

Method used

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  • A double-layer ball screw electric cylinder

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Experimental program
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Embodiment Construction

[0014] Such as figure 1 As shown, the servo motor 1 is connected with the reducer 2, the reducer 2 is installed on the gearbox 3, the small bearings 6 are installed at the front and rear ends of the output shaft of the reducer 2, and the driving gear 5 is installed on the output shaft of the reducer 2, from The moving gear 8 is installed on the driving end of the first layer of ball screw 10, and the driving end of the first layer of ball screw is fixed on the gear box 3 and the gear box cover 4 through two sets of large bearings 7; the first layer of ball screw 10 and The second layer of ball screw 12 is connected together at the bottom, the first layer of sleeve ball nut 11 and the first layer of ball screw 10 form a set of ball screw pairs, and the second layer of sleeve ball nut 13 and the second layer of The ball screw 12 forms a set of ball screw pairs, the first layer of sleeve ball nut 11 and the upper part of the second layer of sleeve ball nut 13 are connected togeth...

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Abstract

The invention relates to the field of electric cylinders, and specifically discloses a double-layer ball screw electric cylinder. The ball screw pair adopts a double-layer nesting method, and the first-layer ball screw pair and the second-layer ball screw pair have the same lead. The second layer of ball screw is a hollow screw, and is nested together with the first layer of ball screw; the first layer of sleeve ball nut and the first layer of ball screw form a set of ball screw; The first layer of sleeve ball nut and the second layer of ball screw form a set of ball screw pair; the outer diameter of the second layer of sleeve ball nut is provided with a guide key, and the guide key cooperates with the keyway on the inner hole of the outer casing to limit the first The rotation of the first-layer sleeve ball nut and the second-layer sleeve ball nut makes the first-layer sleeve ball nut and the second-layer sleeve ball nut only move up and down linearly at the same time. The original single ball screw drive is changed to a double-layer ball screw drive, which doubles the bearing capacity of the electric cylinder to meet the use of large-load electric cylinders.

Description

technical field [0001] The invention belongs to the field of electromechanical devices, and in particular relates to an electric cylinder. Background technique [0002] In current industries such as lifting equipment, it is often necessary to lift objects to be lifted to different heights for work according to needs. In some application fields, especially on some large-load lifting equipment, it is necessary to lift a load of more than 200T. At present, electric cylinders use a single ball screw pair as the transmission component, so the diameter of the ball screw pair needs to be made large, which is difficult to process and expensive. In addition, the electric cylinder has a large size and requires installation space. Also big. Contents of the invention [0003] In order to improve the bearing capacity of the electric cylinder, the present invention provides a double-layer ball screw electric cylinder, which changes the original single ball screw drive into a double-la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F3/10B66F3/20B66F3/44F16H25/22
CPCB66F3/10B66F3/20B66F3/44F16H25/2204
Inventor 樊延都陈寂
Owner XIAN HUA OU PRECISION MACHINERY