SU1303532A2 - Hoist - Google Patents

Abstract

The invention relates to the field of lifting and transport machinery, in particular, to the design of the hoist. The purpose of the invention is to ensure safety in operation due to reliable trapping of the cabin in the mine while it exceeds the allowable speed down. The device comprises a cabin equipped with rollers and connected by means of a ball joint to a frame, which is connected with the help of levers by means of levers. The frame is also equipped with eccentrics 8, Ustaso ate with o M

Description

rotatably with respect to axes 9 and interacting with the walls of the mine. To pivot the eccentrics 8 on the frame, a spring-loaded rod 11 is mounted spring-10, kinematically connected to the bracket 12, which in turn is rigidly connected to the eccentric 8. The rod 10 is held by a latch 13, one end of which is pivotally connected to the frame. When the cab accelerates above the permissible speed, a speed limiter is activated, with the drum 28 being rigidly connected to its hull. A rope 27 is wound onto the drum 28, the end

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The invention relates to lifting devices, can be used in the construction and operation of high-rise buildings, and is an improvement to the elevator. St. No. 1184781.

The purpose of the invention is to ensure safety in operation.

Figure 1 shows the lift, a general view; figure 2 is a section in figure 1; on fig.Z - view B in figure 2; figure 4 - view In figure 2.

The elevator comprises a cabin 1 equipped with guide rollers 2 and

connected by means of a ball joint 3 with a frame 4.

The frame 4 by means of the levers 5 is connected with the movers 6, which are spring-loaded with the springs 7 relative to the frame. The tongues 5 are arranged along the 1st cone, the angle оС at the apex of which is calculated by the formula

2 arctg ---,

where / K - the coefficient of friction between the working bodies of the propulsion and the walls of the mine.

The frame 4 is also equipped with eccentrics 8, the number of which is equal to the number of propellers 6, installed with the possibility of rotation relative to the axes 9 and interacting with the walls of the mine. The eccentrics 8 are rotated by a rod 10, spring-loaded spring

which is attached to the two-arm pivot arm that lifts the spring-loaded rod and rotates the latches holding the spring-loaded rods 10. The rods 10 rotate the eccentrics 8 until they touch the walls of the shaft. Further, the eccentrics 8 are rotated by frictional forces, and the cabin is gradually braked. In order to increase reliability in parallel with one speed limiter, another is installed, also kinematically connected with the corresponding eccentric 8. 4 sludge

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five

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five

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1I and kinematically connected with a bracket 12 rigidly connected with an eccentric 8. Spring-loaded bar 10 is held by a latch 13, one end of which is pivotally connected to the frame 4. A spring-loaded rod 14 is mounted along the axis of the lift, radial levers 15 (by the number of thrusters 6).

The ends of the radial levers 15 are pivotally connected with latches 13. On the frame 4 the L-shaped double-arm lever 16 is pivotally mounted, one end of which is kinematically connected with the spring-loaded stem 14. On the frame 4 on the bracket 17 a speed limiter 18 is installed, the rotor of which is via a chain transmission 19 is connected to the drive wheel 20. The tension of the chain is controlled by the tension device 21. The drive wheel 20 is mounted on the end of the swinging arm 22, spring-loaded with respect to the frame 4 by the spring 23 to ensure that the drive wheel 20 is pressed against the walls Akhty. Coaxially with the eccentrics 8, sectors 24 are installed with a slit a in which the pap 25 is moved, which is associated with the cylinder rod 26.

To the second end of the L-shaped two shoulders lever 16 is attached a rope 27 wound on a drum 28 connected to a body of a speed limiter 18.

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An additional safety limiter can be installed, kpedically (using the same elements) associated with an eccentric corresponding to it.

The lift works as follows.

When the propellers 6 rotate, their rotational movement is converted into a forward movement of the elevator due to frictional interaction with the walls of the shaft. When the lift moves, the drive wheel 20 rotates and is pressed to the walls of the shaft by a spring 23. From the drive wheel 20, rotation through chain transmission 9 is transmitted to the speed limiter rotor 18.

When braking the propellers 6, the lift is reliably held in the shaft due to the location of the axes of the levers 5 at the required angle, which ensures automatic preload to the walls of the shaft.

If the lift speed increases when moving down over the allowable speed (as a result of the fall of the lift due to drive failure, brake failure), the number of revolutions of the drive wheel 20 and, accordingly, the speed limiter rotor 18 increases. As a result of speed limiter 18, its body turns and the drum 28. The rope z7 is wound on the drum 28, as a result of which the double-arm L-shaped lever 16 rotates, which entails the lifting of the spring-loaded rod 14. When the rod 14 is raised, the radial levers 15 with which the latches 13 are cinematically connected. The latches 13 rotate relative to the hinges securing them to the frame 4 and release the spring-loaded rods 10, which under the action of the springs 11 move and rotate around the axes 9 the brackets 12 and, accordingly, the eccentrics 8 until they touch with the walls of the mine. Due to the occurrence of friction forces between eccentrics 8 and the mine walls, they are tightened and spread between frame 4 and walls to the rest

ngshki podgampika (landing on catchers).

The catchers are removed when the lift moves up. The eccentrics and the eccentric drive are returned to the initial position by means of cylinders 26. which rotate sectors 24, which are fixed coaxially with eccentrics and rigidly connected with them, and with the help of spring uiTOKa 14, which replaces the latch 13.

Supply of elevation of the drive unit with cam eccentrics ensures safety of operation in case of a fall of the lift, a drive malfunction or failure of the two-carrier brakes.

The installation on frame 4 of an additional speed limiter 18 ensures an increase in the reliability of trapping the elevator in the mine.

Claims (1)

Invention Formula Lift on avt.sv. No. 1184781 characterized in that, in order to ensure safety in operation, it is equipped with eccentrics, the number of which is equal to the number of lift lifters and which are mounted on its frame with the ability to interact with the walls of the mine, each of these eccentrics equipped with a turning drive, including spring-loaded a rod mounted coaxially with the axis of symmetry of the cab spring-loaded H. rod with a radial lever attached to it, a speed limiter and a double-arm lever in the vertical plane, the bottom of which is connected by means of a rope to the body of its speed limiter, and the other to the corresponding spring-loaded stem, and a latch, one end of which is pivotally connected to the frame of the lift, and the other end is kinematically connected to the corresponding one of the mentioned radial arms, each of which is adapted to be fixed with a corresponding latch of a spring-loaded rod, kinematically connected with its corresponding eccentric. 1 2 Video 20 Editor M. Tsitkina Compiled by L.Lapenko Tehred L.Oleynik Proofreader A.Zimokosov Order 1270/25 Circulation 721 Subscription VNISh State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4