SU1557049A1 - Escalator handrail drive - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to a lifting and transport equipment, in particular, to an escalator handrail drive. The purpose of the invention is to increase the reliability of work. The handrail drive contains escalators installed on metalwork 1 of the escalator in pairs on both sides of the handrail 2 drive rollers 3, on whose axes the sprockets 5 are fixed, interacting with the drive chain 6, which alternately bends around the sprockets of each pair of rollers 3, through one sprocket each located in each a pair. The axes of the drive rollers 3 are interconnected by a hinge-lever mechanism 9, made in the form of Nuremberg scissors and constituting a system coupled with the help of hinges 10, 11 and 12 levers, inside which are placed on the axis rollers 3 with asterisks 5. Axes of the rollers 3 are located on the hinges 10, and the extreme hinges 12 of the mechanism 9 are mounted on sliders 15 and 16 inserted into guide cups 17 and 18 fixed to metal structures 1 with adjustable stops 19 and 20. 3 sludge.

Description

The invention relates to a lifting machinery industry, in particular to escalator handrail drives.

The purpose of the invention is to increase reliability in operation.

FIG. 1 shows a general view of the drive handrail; . 2 — node I in FIG. one; in fig. 3 is a section A-A in FIG. 2

The handrail drive contains escalators mounted on metalwork 1 of escalator in pairs on both sides of handrail 2 drive rollers 3, on axles 4 of which sprockets 5 are fixed, interacting with drive chain 6, which alternately bends around the stars of each pair of rollers 3, through one sprocket 5, located at

each pair. The chain 6 is closed on the tension sprocket 7 and the drive sprocket 8 associated with the drive (not shown) of the escalator. The axes 4 of the drive rollers 3 are interconnected by a hinge-lever mechanism 9 made in the form of Nuremberg scissors. The hinged-lever mechanism 9 is a system of joints using outer hinges 10, inner 11 and inner extreme hinges 12 levers 13 and 14, inside of which axles 4 accommodate rollers 3 with asterisks 5. Axes 4 of the driving rollers 3 are located on paired outer hinges 10, and the inner extreme hinges 12 of the mechanism 9 are mounted on sliders 15 and 16 inserted into the fixed on the meS

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Tall structures 1 parallel to the route of the handhold 2 guide cups 17 and 18, respectively. In the bottoms of the guide cups 17 and 18 are placed. Adjustable stops 19 and 20 of the sliders 15 and 16. The drive rollers 3 are mounted on the axis x with the possibility of rotation.

The device works as follows.

With the help of a tension sprocket 7 in the chain loop, a slight tension of the chain 6 is created (to avoid chain sagging), while the pressure of the rollers 3 on the handrail 2 is negligible.

When an escalator is in operation, the chain 6 receives movement from the escalator drive, while the handrail 2 resists the free rotation of the rollers 3 and a tension of the chain 6 occurs. Tension of the chain 6 causes the pressure of the rollers 3 on the handrail 2, as the tension of the chain 6 causes the outer

the hinges 10 and thus the handrail 25 of the pair in pairs on both sides of the handrail,

2 is clamped by rollers 3 "There is sufficient grip between the rollers

3 and handrail 2, which causes the movement of the latter,

At the initial moment of movement of the escalator (if there is a gap between any of the sliders and the corresponding stop), the hinge-lever mechanism together with the rollers 3 moves in the opposite direction to the movement of the handrail 2 until the slide slides against the stop.

Thus, when an escalator is operating on a rise (in Fig. 1 is shown by arrows), the slider 16 abuts against the stop 19, and between the slider 15 and the stop 20 there is

thirty

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equipped with a hinged-lever mechanism in the form of Nuremberg scissors, while the tension device includes fastening glasses parallel to the handrail parallel to the handrail, each of which is equipped with a slide with an adjustable travel stop, moreover, the flexible element is designed with the possibility of alternating rounding bypass elements each pair of rollers, a sequence through one bypass element located in each pair, and each of the ends of the hinge-lever mechanism is connected hingedly to its corresponding zunom tensioner.

gap. If the escalator is started down, the gap between the slider 15 and the stop 20 will be selected first, and then the handrail 2 will descend.

The need for swimming of the hinge-lever mechanism 9 together with the driven rollers 3 is caused by the reversing work of the escalator, and therefore the pressure between the rollers 3 should be approximately equal both during the operation of the escalator and the descent.

Claims (1)

Invention Formula A handrail of an escalator containing drive rollers placed on metal structures, on whose axes the bypass elements covered by the flexible element and tensioning device are fixed, in order to increase the reliability of the drive rollers equipped with a hinged-lever mechanism in the form of a Nuremberg scissors, while the tension device includes fastening glasses parallel to the handrail, which are installed in each of the handrails. flax slider with an adjustable stop stroke, moreover, the flexible element is made with the possibility of alternating rounding of the bypass elements of each pair of rollers, a sequence through one bypass element located in each pair, and each of the ends of the hinge-lever mechanism is connected to the corresponding slider tension device. 3 15 G7 28 Editor I. Segl nick Compiled by L. Borisova Tehred M.DidbzhKorrektor T. Paliy Order 692 Circulation 592 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., A / 5  Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Aa turned WAP 4 ten Fig.z Subscription