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Four-stage ball screw double-electric-cylinder

A ball screw and electric cylinder technology, applied in the field of mechanical transmission, can solve the problems of increasing the weight and difficulty of the cylinder block, and achieve the effect of saving radial and axial installation dimensions and reducing weight

Inactive Publication Date: 2017-02-22
XIAN FANGYUANMING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This increases the weight of the cylinder body, which brings great difficulties to the designer in some occasions where the installation space is limited and the weight is strictly required.

Method used

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  • Four-stage ball screw double-electric-cylinder
  • Four-stage ball screw double-electric-cylinder
  • Four-stage ball screw double-electric-cylinder

Examples

Experimental program
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Effect test

Embodiment Construction

[0013] The invention will be further described below in conjunction with the accompanying drawings and examples.

[0014] The servo motor (19) drives the main gear (21) installed in the gear box (22) and the tail gear (28) of the master cylinder (13) to rotate through the reducer (20) fixed on the gear box (22) , an angular contact ball bearing (26) is installed at the end of the main cylinder (13), the inner ring of the bearing is connected with the main cylinder (13) and locked with the No. 2 lock nut 27, and the outer ring is embedded in the gear box (22), Then use the pressure plate (25) to stop, the end face of the tail of the main cylinder (13) fits the end face of the gear box (22) through the thrust ball bearing (24), the outer cylinder (18) is fixedly connected with the gear box (22), and the front end The inner wall is equipped with a needle roller bearing (17) without an inner ring, and the inner wall of the bearing is in contact with the master cylinder (13), and i...

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Abstract

The invention relates to a four-stage ball screw double-electric-cylinder which is characterized in that a motor is directly connected with a decelerator, the end gear of the decelerator is engaged with the tail gear of a main cylinder in the cylinder body, the main cylinder is installed on a gearbox bearing pedestal through a bearing, and the front end part of the main cylinder is provided with a two-stage screw nut which is screwed with a two-stage hollow screw; the front end of the two-stage hollow screw is provided with a three-stage nut which is screwed with a three-stage hollow screw and the rear end part is provided with an anti-reversal device; the front end part of the three-stage hollow screw is provided with a four-stage nut which is screwed with a four-stage screw push rod and the rear end part is provided with an anti-reversal device; and the four-stage screw push rod is connected with a load platform. The four-stage screw push rod can stretch out stage by stage, all the screws are superposed together, the stage-by-stage telescopic mode is applied in use, and an external cylinder is eliminated so that the radial installing size can be greatly reduced. The ball screw assembly is applied so that the friction can be reduced and the transmission efficiency can be enhanced. The anti-reversal device is additionally arranged at the tail end of the screw so that retreating of the screw caused by compression can be prevented.

Description

technical field [0001] The invention relates to a four-stage ball screw double electric cylinder, which belongs to the field of mechanical transmission. Background technique [0002] At present, electric cylinders are widely used in military and civilian products at home and abroad, but most of them are only single-stage transmission mechanisms, and the working stroke is greatly limited. In practical applications, if you want to get a large stroke, you can only lengthen the push rod and the installation distance. This increases the weight of the cylinder block even more, which brings great difficulties to the designer in some occasions where the installation space is limited and the weight is strictly required. The present invention proposes a four-stage ball screw double electric cylinder aiming at the above deficiencies. The electric cylinder has the characteristics of small installation space, light weight and large stroke. Contents of the invention [0003] The purp...

Claims

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Application Information

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IPC IPC(8): H02K7/06H02K7/08H02K7/116
CPCH02K7/06H02K7/08H02K7/116
Inventor 吴立
Owner XIAN FANGYUANMING TECH CO LTD
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