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Controllable soft start electric drum

A technology for starting the electric drum and the drum body, which is applied in the direction of transportation, packaging, conveyors, etc., can solve the problems such as the soft start of the electric drum that cannot be solved, and achieve the effect of reducing the number of startups and shutdowns, the effect is obvious, and the mechanical impact is small.

Inactive Publication Date: 2010-08-04
湖州电动滚筒有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electric drum has the advantages of compact structure, small size, light weight, and small space occupation. It is the most ideal driving device for belt conveyors. However, the existing electric drums cannot achieve high power, generally only below 132kW. The fundamental reason is Just can't solve the soft start problem of electric drum

Method used

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  • Controllable soft start electric drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Before the motor starts, the external air source supplies air to the air bag 16 to make the air bag 16 reach the rated air pressure. At this time, the dynamic friction plate 18 and the static friction plate 3 in the brake 1 are completely disengaged, and there is no braking force; when the motor 15 is started, the power passes through The input shaft 10 is input, and through the transmission of the primary sun gear 12, the primary planetary gear 11, the primary planetary carrier 25, the sun gear 9 and the planetary gear 7, the planetary carrier 23 drives the left flange 22, the right flange shaft 26 and the brake shaft 5 and the moving friction plate 18 start to rotate, and the water cooling device is turned on simultaneously, cooling water enters the water cooling chamber 20 from the water inlet 2, and after cooling the static friction plate 3, hot water flows out from the water outlet 19. After the motor 15 starts normally to the rated speed, the air bag 16 begins to l...

Embodiment 2

[0034] When the load needs to be shut down, the water cooling device starts to work, the cooling water enters the water cooling cavity 20 from the water inlet 2 , and flows out from the water outlet 19 after cooling the static friction plate 3 . The external air source supplies air to the airbag 16, the pressure inside the airbag 16 gradually increases, the braking force of the dynamic friction plate 18 and the static friction plate 3 gradually decreases, the speed of the drum body 6 and the output ring gear 8 gradually slows down to nowhere, and the airbag The pressure of 16 continues to increase gradually and reaches the rated pressure, the braking force continues to decrease to 0, the dynamic friction plate 18 and the static friction plate 3 are completely separated, and the belt conveyor stops at this time, and the motor 15 only has the planet carrier 23 and the left flange 22 , the right flange shaft 26, the brake shaft 5 and the moving friction plate 18 rotate, then turn ...

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Abstract

The invention relates to a controllable soft start electric drum, comprising a drum body, a left bearing pedestal, a right bearing pedestal and a brake arranged on the left bearing pedestal; the brake is provided with a dynamical friction plate, a static friction plate and an air sac; the air sac controls the contact pressure between the dynamical friction plate and the static friction plate through air inflation and air exhaust; a left flange and a right flange shaft are arranged in the drum body, an output gear ring is arranged between the left flange and the right flange shaft; a brake shaft is fixed at the center of the left flange, and the dynamical friction plate is fixed on the brake shaft; and the output gear ring is fixedly connected with the drum body. The invention has large power, simple structure, small volume, light weight, high efficiency and obvious effect, and can be widely applied to large-scale belt conveyor of ports, mines, metallurgy, electric power and other industries.

Description

technical field [0001] The invention relates to an electric drum, in particular to a controllable soft-start electric drum. Background technique [0002] At present, large-scale belt conveyors need to be started with a load, even with a heavy load. In order to prevent equipment from being damaged in the start-up impact, a small start-up acceleration is required to prolong the start-up time. The start-up time of some belt conveyors is as long as 20 to 60 seconds. Since the starting current of the motor is 7 to 8 times the rated current, in the case of satisfying the starting acceleration of the belt conveyor, the existence time of the starting current of the motor must be extended. Excessive starting current will cause a considerable impact on the power grid, and at the same time The high current of time will also burn the motor. In order to meet the load start of the motor, doubling the power supply and motor capacity will undoubtedly cause considerable waste. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G23/08
Inventor 周土根仝桐吴旭
Owner 湖州电动滚筒有限公司
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