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Double-layer ball screw electric cylinder

A technology of ball screw and ball screw pair, which is applied in the direction of transmission device, lifting device, belt/chain/gear, etc. It can solve the problems of large diameter of ball screw pair, large size of electric cylinder, and difficult processing. , to achieve the effect of improved bearing capacity, compact structure and fast lifting speed

Active Publication Date: 2022-03-18
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 a transmission part, 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. big space

Method used

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  • 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 particularly discloses a double-layer ball screw electric cylinder which is characterized in that a ball screw pair adopts a double-layer nesting mode, the lead of a first-layer ball screw pair is consistent with that of a second-layer ball screw pair, and a second-layer ball screw is a hollow screw and is nested with the first-layer ball screw pair; the first-layer sleeve ball nut and the first-layer ball screw form a set of ball screw pair; similarly, the second-layer sleeve ball nut and the second-layer ball screw form a set of ball screw pair; a guide key is arranged on the outer diameter of the second-layer sleeve ball nut and matched with a key groove in an inner hole of the outer sleeve, so that rotation of the first-layer sleeve ball nut and the second-layer sleeve ball nut is limited, and the first-layer sleeve ball nut and the second-layer sleeve ball nut can only do up-down linear motion at the same time. Original single ball screw pair driving is changed into double-layer ball screw pair driving, so that the bearing capacity of the electric cylinder is improved by two times, and the requirement for the use occasion of the large-load electric cylinder is met.

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 a transmission part, 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. The space is also large. 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-...

Claims

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Application Information

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Patent Type & Authority Applications(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