SU1631018A1 - Mechanism for emergency stop of lift cabin - Google Patents

Abstract

The invention relates to elevator engineering, in particular, can be used in high-speed passenger elevators. The purpose of the invention is to increase safety by disabling the elevator drive when the speed limiter is triggered. When the speed limiter 1 is triggered, the pulley 5 bending around the rope is locked. Under the influence of the working branch 6 of the rope, the frame 2 is rotated clockwise around the hinge 4. When the frame 2 rotates through the thrust rod 19 and the preloaded spring 20, it acts on the beam 10, lifts it and switches off the main current switch 14 using the cam 13. When the cabin passes through the uppermost position, the clamp 12 of the working branch 6 acts on the yoke 10. The spring 20 is chosen so that its force and stroke provide the necessary rotation of the rocker arm 10 to turn off the limit switch 14. When the cabin moves to the lowermost position, the clamp 12 of the non-working branch of the rope acts on the left shoulder of the rocker arm 10, which, turning freely, passes tug 19 through the hole 22 and turns off the limit switch 14. 1 h. item f-ly, 2 ill. SS (L O co oo

Description

The invention relates to elevator building, in particular to passenger elevators, including high-speed elevators.

The purpose of the invention is to increase safety by disabling the elevator drive, when a speed limiter is triggered.

FIG. 1 shows the proposed mechanism, a general view; in fig. 2 — node I in FIG. I.

The mechanism contains a limiter 1 of the circuit breaker 14 of the drive circuit. The force exerted by the spring 20 is chosen such that it is certainly greater than the force required to open the switch 14 through the rocker arm 10.

In addition, the position of the hinge 4 and the adjusting force of the spring 18 are chosen so as to ensure that the device does not operate when the speed limiter is started at the moment of moving the elevator. In the racer, mounted on frame 2. Frame 2, the second position of frame 2 is fixed to base 3, horizontally mounted with bolt 16 and gavel shaft, using hinge 4. Pulley is mounted on shaft of speed limiter 1

ki 17.

With the passage of the upper extreme position of the cab, the clamp 12 of the working branch 6 with a rope, the working branch 6 of which is connected, acts on the right shoulder with the lever of the lever 7 with the catchers 8, 10, and the spring 20 is chosen so that

  its force and stroke provided the necessary rotation of the rocker arm 10 for opening the switch 14. When passing the lower extreme position of the cab clamp 12

To interact with the yoke 10 in the extreme 20 non-working branch 11 of the rope, they act in the positions of the cabin 9. To the yoke on the left shoulder of the rocker arm 10, which has its own 10 cam 13, and on the base 3 there is a limit switch 14 of the drive chain. The frame 2 has a rotation stop 15 and a bolt 16 with a nut 17, which functions as another rotation limiter. Between the frame 2 and the base 3

5, which bends around an endless drive unit rolled on the cabin 9. On the base 3, the beam 10 is pivotally mounted, and clamps 12 are fixed on the working branch 6 and the non-working branch 11 of the drive rope

25

Rotates freely, passes through 19 aperture 21, and opens the drive circuit through limit switch 14.

Claims (2)

1. The emergency stop mechanism of the elevator car, containing a speed limiter with a pulley mounted on the frame, placed pre-pressed elastic element 18. Frame 2 is connected to the rocker arm 10 through 1. The mechanism of an emergency stop of a cabin of the elevator containing the speed limiter installed on a frame with a pulley, by means of cable 19, located on the side 30, which bends around an endless drive cable, non-working branch 11 of the drive cable and having a shank with a pre-loaded spring 20. The second end of the rod 19 is passed into the hole 21, made in the rocker arm 10, the working branch of which is kinematically connected with the lever of catchers mounted on the cab, a swivel arm mounted on an axis that can interact with an end switch, is equipped with a nut 22 for adjusting its 35 elevator drive chuck, the clamps are fixed. on both branches of the rope with the ability to interact in the extreme positions of the cabin with the shoulders of the swivel arm, in contact when turning with the limit switch, characterized in that on both branches of the rope with the ability to interact in the extreme positions of the cabin with the shoulders of the swivel arm, in contact when turning with the limit switch, characterized in that The mechanism of the emergency stop of the elevator car works as follows. When the speed limiter 1 is triggered, the pulley 5 locks, bending around 40 in order to increase safety by disconnecting with branch 11 The friction force arises when the elevator drive actuates speed limiter, it is provided with a spring-loaded thrust linking the arm of the rocker arm from the non-working branch of the rope with a speed limiter frame hinged on the base between the vertical axis passing through the center of the pulley and the working branch of the rope and the rotation limiter with the elastic element installed between the frame of the frame 2 with the speed limiter installed on it and the base, the speed body 5 around the hinge 4. 2. The mechanism of claim 1, which is different the fact that the end of the tie rod connecting the yoke with the frame is passed into the hole made in the shoulder of the rocker arm and provided with an adjustment head. In this case, the cable between the rope and the pulley 5 is applied to the speed limiter 1 from the working branch 6 of the rope and is directed downwards. Due to the location of the hinge 4 between the vertical axis, passing 5 through the center of the pulley 5, and the working branch 6 of the rope, and accordingly the selected elastic element 18, the force in the working branch 6 is sufficient to rotate the frame 2 when turning the frame 2 through 19 and then preloaded the spring 20 acts on the yoke 10, lifts it and using the cam 13 turns off switch 14 of the drive circuit. The force exerted by the spring 20 is chosen such that it is certainly greater than the force required to open the switch 14 through the rocker arm 10. In addition, the position of the hinge 4 and the adjusting force of the spring 18 are chosen so as to ensure that the device does not operate when the speed limiter is started at the moment of moving the elevator. In the working position, the frame 2 is installed horizontally with the help of the bolt 16 and the screw branch 11 of the rope, which acts on the left shoulder of the rocker arm 10, which is Rotates freely, passes through 19 aperture 21, and opens the drive circuit through limit switch 14. Invention Formula non-working branch 11 of the rope acts on the left shoulder of the rocker arm 10, which is 1. The emergency stop mechanism of the elevator car, containing a speed limiter with a pulley mounted on the frame, around the endless cable drive, the working branch of which is kinematically connected with the lever of the catchers mounted on the cab, the rotary arm mounted on the axis with the possibility of interaction with the limit switch of the elevator drive, the clamps are fixed on both branches of the rope with the ability to interact in the extreme positions of the cabin with the shoulders of the swivel arm, in contact when turning with the limit switch, characterized in that to increase safety by disabling the elevator drive when triggered FIG. 2