Dynamically-combined helical driving device

A screw transmission and dynamic technology, which is applied in the direction of transmission devices, belts/chains/gears, mechanical equipment, etc., can solve the problems of screw stress deterioration, high cost, and heavy screws, etc., and achieve small installation space and strong practicability , the effect of size reduction

Inactive Publication Date: 2010-05-05
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional screw transmission method can no longer meet the needs in many occasions.
The main manifestations are: long screw is difficult to process and the cost is high; the output linear displacement length is always smaller than the screw

Method used

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  • Dynamically-combined helical driving device
  • Dynamically-combined helical driving device
  • Dynamically-combined helical driving device

Examples

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Embodiment Construction

[0029] See attached figure 1 , This embodiment of the dynamic combined screw transmission device of the present invention has an outer diameter of the combined screw of 300 mm and a stroke of 5000 mm. The supporting helix 1 and the connecting helix 2 are produced by cold working of a stainless steel plate with a cross-sectional size of 30mm×3mm. The support 8 is made of aluminum alloy, in the shape of an inverted tube cap, and the diameter of the outer ring is 450mm. The motor 9 adopts a DC motor with a power of 1500 watts, the coaxial sleeve is placed in the support 8, and the output shaft is upward. The output shaft is coaxially fitted with an engaging inner core 7, and the engaging inner core 7, the engaging outer core 5 and the connecting rod 6 are all made of stainless steel. The supporting helical guide wheel 3 and the connecting helical guide wheel 4 are wear-resistant and noise-reducing commercially available nylon wheels with a diameter of 20mm and a width of 20mm. ...

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PUM

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Abstract

The invention relates to a dynamically-combined helical driving device. A supporting seat (8) is internally provided with a motor (9) which is axially provided with an engaged inner core (7); and the engaged inner core (7) is provided with a supporting helicoid (1) with a connecting helicoid (2) through a supporting helical guide wheel (3). Positioning teeth (11) are arranged at the upper edge and the lower edge of the supporting helicoid (1). The upper edge and the lower edge of the connecting helicoid (2) are provided with positioning holes (21). The connecting helicoid (2) is helically sleeved on the supporting helicoid (1) and the positioning holes (21) and the positioning teeth (11) are in butt joint and are fastened tightly. The connecting helicoid (2) is provided with an engaged outer core (5) which is connected with the engaged inner core (7) through a connecting rod (6). By the invention with the structure, screws with different heights can be formed by controlling the screwing turns; and the volumes of two helicoids can be substantially reduced, thereby providing an effective solution for meeting long-stroke heavy load linear drive.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to a dynamic combination screw transmission device, a transmission device that utilizes the principle of screwing and coupling for transmission to realize long-stroke and heavy-duty linear drive. Background technique [0002] The traditional screw drive has a history of more than 1,000 years, but the research on it has never stopped in engineering circles. According to the different friction properties of the thread pair, the screw drive can be divided into sliding screw drive, rolling screw drive and hydrostatic screw drive. According to the different working properties, it can be divided into the power transmission screw which mainly transmits power, the transmission screw which mainly transmits motion and requires high transmission precision, and the adjustment screw which adjusts the mutual position of parts. [0003] With aerospace, light industry, construction machinery...

Claims

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Application Information

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IPC IPC(8): F16H25/20F16H25/24
Inventor 徐小军潘存云尚建忠徐海军张湘
Owner NAT UNIV OF DEFENSE TECH
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