Toothed belt depth indicator

Abstract

The invention relates to a tooth belt type depth indicator which comprises a base and a shell. The tooth belt type depth indicator is characterized in that a horizontal transmission shaft is arranged in the base; one end of the horizontal transmission shaft is connected with a spindle of a lifting machine, and the other end of the horizontal transmission shaft is connected with the input end of a cycloid speed reducer; a driving tooth belt wheel I is fixed to an output shaft of the cycloid speed reducer; the upper end and the lower end of the interior of the shell are each provided with two driven tooth belt wheels I; the driving tooth belt wheel I is connected with the four driven tooth belt wheels I through a synchronous belt I; a panel is arranged on the side, close to the end faces of the driven tooth belt wheels I, of the shell; the upper end and the lower end of the interior of the panel are each provided with a proximity switch; a detected body used for switching on the proximity switches is arranged on the portion, corresponding to the position between the upper proximity switch and the lower proximity switch, of the synchronous belt I; a pointer is fixed to the synchronous belt I; longitudinal through grooves corresponding to the pointer are formed in the left edge and the right edge of the panel; and a needle part of the pointer points to a scale mark of the panel after penetrating through the longitudinal through grooves. The tooth belt type depth indicator is simple in structure, low in weight, low in production cost, high in working reliability and basically free of maintenance.

Description

technical field [0001] The invention relates to a mine hoist depth indicator, in particular to a novel toothed belt depth indicator. Background technique [0002] The depth indicator is an important part of the mine hoist. It is mainly used to indicate the position of the lifting container such as the hoist cage when it is running up and down in the shaft, and provides very intuitive information for the driver to operate. When the container is close to the wellhead and the bottom of the well, it sends out a deceleration signal; when the hoist is overwound, it cuts off the operating circuit, starts the safety circuit, and performs safe braking; participates in speed control and realizes overspeed protection during the deceleration stage. [0003] At present, the depth indicator used on the single-rope winding hoist in my country is more representative of the archway-type depth indicator. Its working principle is that the transmission shaft transmits the rotation of the main s...

AI Technical Summary

Problems solved by technology

The archway-type depth indicator is generally favored by hoist users due to its clear and intuitive indications, but there are the following problems: 1. It is a purely mechanical depth indicator, which requires high processing precision for each component of the indicator, so the production efficiency is relatively high. Low, high failure rate, high production cost

The above-mentioned functional components are indispensable for the indicator, and the assembly and coordination must be precise. Once a problem occurs, the reliability of the work will be greatly reduced, or even the indicator function will be lost, and maintenance and repair will be time-consuming and laborious; Lubricating oil maintenance, and the worm gear and worm are made of copper, the production cost is too high; 3, bulky, inconvenient to transport and use

In summary, the depth indicator used on the existing single-rope winding hoist still needs to be improved

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