SU1481181A1 - Escalator handrail drive - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to a lifting and transport machinery, in particular, to an escalator handrail drive. The purpose of the invention is to increase the reliability of the drive by reducing the abrupt change in the tension of the traction organ when starting, stopping and changing the direction of movement of the escalator. When stretching the handrail 2, the frame 16 is lowered with the screws 19 below, as a result of which the handrail is extracted. The belt 4 is pressed against the handrail 2 with the force necessary to create a pulling force by the rollers 23 while tensioning the chain 26 by turning the levers 29. 7 Il.

Description

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FIELD OF THE INVENTION The invention relates to a lifting machinery industry, namely to a handrail of an escalator.

The purpose of the invention is to increase the reliability of the drive by reducing the abrupt change in tension of the traction device during the start, stop, and change of the direction of movement of the escalator.

FIG. 1 shows an escalator with a mounted handrail of an escalator, a general view of FIG. 2 - Escalator Handrail Drive, general view; ta FIG. 3 is a section A-A in FIG. 2j Tsa FIG. 4 - section BB in FIG. 2, on f | n, 5 — section R-B in FIG. 2 in FIG. 6 - section G-Y in figure 2; figure 7 - section dD in figure 2.

In escalator 1, the handrail 2 has a Drive 3 located in the sloping part of its idle branch. The drive 3 is a vertically closed flexible body in the form of a V-belt; the lower branch of which is located in the drive section in the interboron toBOM handrail 2. The belt 4 bends around the drive 5 and tension 6 blocks fastened to the metal structure of the Escalator. The drive unit 5 is rigidly mounted on the end of the shaft 7, in the middle of which is a support 8 connected to the structural design. At the opposite end of the shaft 7, the power take-off 9 from the drag chain 10 of the escalator 1 is rigidly mounted. The tension unit 6 is installed on the axis 11, able to move along the horizontal groove of the support 12 under the action of the screw 13. In the area adjacent to the handrail 2 of the belt 4 there are rollers 14 with a belt, the axes 15 of which are fixed to the frame 16 along its lower arcuate surface, convex toward the handrail.

The frame 16 has a U-shaped cross section consisting of two lateral vertical bars 17 and an upper horizontal bar 18. Two bars installed symmetrically with respect to the central axis of the frame 16 and screws 19, which pass through the holes in the bar 20 mounted on the escalator metal, rest against the bar. Adjacent to the screw 19, through the holes in the plate 20, the sleeves fixed on it pass through - 21, located symmetrically to the screws 19. Through the sleeves 21 pass the pins 22 fixed to the plate 18

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frame 16. Under guardrail 2 against each of the rollers 14, the rollers 23 mounted on the axles 24, hinged on the ends of the axes by the slats 25, are connected to the chain 26. The extended axis 27 of the middle chain 26 of the roller 23 enters into vertical grooves of the slats 17 of the frame 16. On the ends of the axis 27 of each of the cranks in the chain 26, the rollers 23 are put on the holes of their lower end of the strip 28 of the lever 29. An axis 5 30 fixed on the slats passes through the holes in the upper end of the slats 28; the end of the axle is put on ha ha 31. Between the upper and lower holes in each This strip 28 has a hole in which these strips are attached to the ends 0 of axis 32, protruding beyond the strips 17 of frame 16, on which axles 32 are fixed. The ha ha 31 on the end opposite to the eyelet on which it is attached to axis 30 is threaded. Its threaded end passes through a hole in the corner 33, which is attached to the bar 18. The corners 33 are installed symmetrically to the central axis of the frame 16, and on the ends of the bars 31 passing through the holes in the corners 0 0 they are put on springs 34 adjacent to the corner, and then nuts 35

Instead of the V-belt 4, a chain with pieces of a flat belt or rollers attached to it can be used as the driving member.

Claims (2)

Before starting the conveyor, screws 13 and 19 install the block 6 and the frame 16 in such a position that 0 provides the necessary coupling of the belt 4 to the drive unit 5, as well as preliminary pressing the belt 4 to the handrail 2. When the handrail 2 is pulled out, the frame 16 is lowered by screws 5-19 below, as a result of which the handrail is pulled out. The belt 4 is pressed against the handrail 2 with the force necessary to create a pulling force sufficient to communicate the movement handrail, the synchronous canvas of the escalator, is carried out by the rollers 23 while the chain 26 is tensioned by turning the levers 29 around the axes 32 under the action of the tufts 31, on which nuts 35 are compressed springs 34. Claims of the invention Handrail of the escalator containing traction body, envelope driving and tension blocks, mechanism 0 five clamping a traction body to the handrail, made in the form of a carriage placed with the possibility of movement in vertical guides and having an arcuate lower surface, and supporting rollers mounted on a flexible element, characterized in that, in order to increase the reliability of the drive by reducing the sudden change tension When the escalator starts, stops and changes the direction of movement, it is equipped with two-arm levers hinged on the carriage, one arm of each of which is connected to its corresponding end of the flexible organ, and the other arm is spring-loaded and kinematically connected to the carriage. the form of screws. ten 1 with 00 r  /////////// sfflU ////////// T) I 2c Compiled by L. Borisova Editor N. Rogulich Tehred M. Didyk Proofreader G. Joula Order 2632/21 Circulation 629 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 17 42J 25 6 Subscription