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Lead screw drive based multistage synchronous telescopic boom

A screw-driven, telescopic arm technology, applied in transmissions, friction transmissions, belts/chains/gears, etc., can solve the problems of difficult processing and assembly, difficult to transform, and low telescopic efficiency.

Active Publication Date: 2020-02-11
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional equipment such as truss vertical ladders are difficult to meet the functions of rapid construction and portable movement.
[0003] In the current screw-driven telescopic arms, the hollow screw socket method is mostly used to achieve multi-stage telescopic expansion. This method has problems such as very difficult processing and assembly, poor mechanism flexibility, and difficult transformation.
In addition, some telescopic arms use a single screw to expand and contract step by step. This method not only has low telescopic efficiency, but also requires a locking device. When the locking device is combined with the telescopic arm sleeve, the telescopic arm may be unstable, and , the telescoping arm may not be able to provide precise positioning due to locking engagement issues

Method used

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  • Lead screw drive based multistage synchronous telescopic boom
  • Lead screw drive based multistage synchronous telescopic boom
  • Lead screw drive based multistage synchronous telescopic boom

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only for illustration and are not intended to limit the present invention.

[0033] The invention provides a multi-stage synchronous telescopic arm driven by a lead screw, such as figure 1 As shown, it includes: a carrying section (1) and one or more telescopic arm units fixedly connected with the carrying section (1); wherein, each telescopic arm unit includes a servo drive motor (2), a primary telescopic drive section (3 ) and multi-stage telescopic middle section (4); figure 1 Take the middle section including two stages of expansion and contraction as an example, that is, figure 1 It is a four-stage synchronous telescopic boom, but the present invention is not limited to a four-stage synchronous telescopic boom. The number...

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Abstract

The invention discloses a lead screw drive based multistage synchronous telescopic boom. A bearing section is connected with a guide rail slide block and a lead screw nut fixed base of a last-stage telescopic middle section; a current-stage telescopic middle section is connected to a guide rail slide block and a lead screw nut fixed base of a previous-stage telescopic middle section or a first-stage telescopic drive section; a motor of the first-stage telescopic drive section drives a large bevel gear to be engaged with a small bevel gear for transmitting rotation onto a lead screw; the lead screw drives a lead screw nut and a first-stage telescopic middle section to move; a large plane transmission gear of the first-stage telescopic middle section is engaged with a rack of the first-stagetelescopic drive section to rotate; the large plane transmission gear is engaged with a small plane transmission gear to perform reversing and speed changing; the small plane transmission gear and the large bevel gear rotate coaxially; the large bevel gear is engaged with the small bevel gear for transmitting rotation to the lead screw; and the lead screw drives a next-stage telescopic middle section or the bearing section to move. The lead screw drive based multistage synchronous telescopic boom has the advantages of being synchronous and quick in extension and retraction, good in rigidity,high in transmission efficiency, high in precision, capable of expanding at any stage, good in self-locking performance, and the like.

Description

technical field [0001] The invention relates to the technical field of linear transmission devices, in particular to a multi-stage synchronous telescopic arm driven by a lead screw. Background technique [0002] Linear actuators are found in everything from engineering lifts to experimental positioning devices to telescoping arms in space. In many occasions, high-distance or long-distance linear displacement output is required, such as cable maintenance, field communication base stations and antenna erection. However, traditional equipment such as truss vertical ladders are difficult to meet the functions of rapid construction and portable movement. [0003] In the current screw-driven telescopic arms, the method of socketing the hollow screw is mostly used to realize multi-stage telescopic expansion. This method has problems such as great difficulty in processing and assembly, poor flexibility of the mechanism, and difficulty in modification. In addition, some telescopic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H37/12F16H19/04F16H25/20
CPCF16H19/04F16H37/124F16H2025/204F16H2025/2046F16H2025/2084F16H2025/2093
Inventor 徐坤乔安伟丁希仑
Owner BEIHANG UNIV
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