SU802155A1

SU802155A1 - Lift care arresting device

Info

Publication number: SU802155A1
Application number: SU792749608A
Authority: SU
Inventors: Эмиль Николаевич Кашеваров
Original assignee: Центральное Проектно-Конструкторскоебюро По Лифтам Всесоюзногопромышленного Объединения "Союз-Лифтмаш"
Priority date: 1979-04-09
Filing date: 1979-04-09
Publication date: 1981-02-07

Description

Изобретение относится к области . лифтостроения и может быть использовано в в качестве предохранительного устройства_; обеспечивающего безопасность· передвижения на лифтовых установках, удерживающего кабину лифта на направля- ⁵ющих в случае обрыва тягового каната или увеличения скорости движения кабины лифта сверх установленного предела.The invention relates to the field. elevator building and can be used as a safety device _; ensuring safety · movement on elevator installations, holding the elevator car on rails ⁵ in the event of a breakage of the traction rope or increase in the elevator car speed exceeding the established limit.

Известно улавливающее устройство для кабины лифта, содержащее установленные на кабине ловители плавного торможения, каждый из которых содержит два подпружиненных рычага, охватывающих направляющую, и пару 'винт-гайка', связанную посредством каната с ограничителем скорости, лифта £ 1].A trapping device for an elevator car is known, comprising soft braking catchers installed on the car, each of which contains two spring-loaded levers covering the guide and a screw-nut pair connected via a rope with a speed limiter, elevator £ 1].

Однако улавливающие устройства с такими ловителями сложны по конструкции и.регулировке.However, catching devices with such catchers are complex in design and adjustment.

Сложен также процесс съема кабины с ловителей после их срабатывания и посадки кабины на ловители.The process of removing the cabin from the catchers after they have been triggered and the cabin landing on the catchers is also complicated.

Цель изобретения - улучшение условий эксплуатации устройства.The purpose of the invention is the improvement of the operating conditions of the device.

Для этого каждый ловитель снабжен шкивом, неподвижно установленным на безрезьбовой части винта и связанным с гайкой с помощью пальца, причем шкивы ловителей охвачены петлей указанного каната.For this, each catcher is equipped with a pulley fixedly mounted on the threadless part of the screw and connected to the nut with a finger, and the pulleys of the catchers are covered by a loop of the specified rope.

На фиг. 1 изображена конструкция ловителя; на фиг. 2 - схема соединения каната ограничителя скорости со шкивами ловителей.In FIG. 1 shows the design of the catcher; in FIG. 2 is a diagram of a connection of a rope of a speed limiter with pulleys of catchers.

Ловитель имеет два охватывающих направляющую 1 рычага 2, связанных между собой осью 3. На рычагах смонтированы силовые пружины 4, возвратная пружина 5 и пара, состоящая из винта 6 со стопором 7, предохраняющим винт от проворачивания, и гайки 8, свинчивание которой ограничивается упором 9. На безрезьбовой чисти винта 6 установлен связанный с гайкой 8 шкив 10, размещенный в подшипнике 11.The catcher has two lever guides 2 spanning 1, interconnected by an axis 3. Power levers 4, a return spring 5 and a pair consisting of a screw 6 with a stopper 7, which protects the screw from turning, and a nut 8, the screwing of which is limited by the stop 9, are mounted on the levers . On the threadless clean of the screw 6, a pulley 10 connected to the nut 8 is mounted in the bearing 11.

Шкивы 10 обоих ловителей установлены на балке 12 кабины лифта и соединяются канатом 13 ограничителя скорости.The pulleys 10 of both catchers are installed on the beam 12 of the elevator car and are connected by a rope 13 of the speed limiter.

Канат 13, натянутый между шкивом 14 ограничителя скорости и блоком 15 натяжного устройства, общей петлей охватывает шкивы обоих ловителей и заторможен относительно кабины зажимом 16. Гайка 8 имеет палец 17, взаимодействуюший со шкивом 10.The rope 13, stretched between the speed limiter pulley 14 and the tensioner unit 15, covers the pulleys of both catchers with a common loop and is braked by the clamp 16. The nut 8 has a pin 17 that interacts with the pulley 10.

Устройство работает следующим образом. В исходном состоянии гайка 8 повернута на винте 6 до регулируемого упора 9 и рычаги 2 разведены в стороны под действием возвратной пружины 5.The device operates as follows. In the initial state, the nut 8 is rotated on the screw 6 to an adjustable stop 9 and the levers 2 are pulled apart to the side under the action of the return spring 5.

Во время движения кабины с нормальной скоростью шкивы 10 неподвижны, а канат 13, перемещаясь вместе с кабиной, вращает шкив 14. При срабатывании ограничителя скорости шкив 14 останавливается и тормозит канат 13, передающий вращение шкивам 10, которые связаны с гайками 8 с помощью пальца 17. Навинчиваясь, гайки 8 через силовые пружины 4 сжимают рычаги 2, которые входят в соприкосновение с налравляющими, 1 и сжимают . -их с возрастающим усилиемDuring the movement of the cab at normal speed, the pulleys 10 are stationary, and the rope 13, moving together with the cab, rotates the pulley 14. When the speed limiter is activated, the pulley 14 stops and brakes the rope 13, which transmits rotation to the pulleys 10, which are connected to the nuts 8 with the help of finger 17 . Screwing, nuts 8 through power springs 4 compress the levers 2, which come in contact with the adjusters, 1 and compress. with increasing effort

За счет постепенного возрастающего усилия трения между направляющими и рычагами происходит остановка кабины.Due to the gradual increasing frictional force between the guides and levers, the cab stops.

Для снятия кабины с ловителей вращают вручную шкив 14 ограничителя скорости, заставляя посредством каната 13 и шкивов 10 гайки 8 свинчиваться с винта 6. Возвратные пружины 5 разводят рычаги. Свинчивание продолжают до под- , хода гаек 8 к регулируемым упорам 9Λ’To remove the cab from the catchers, the speed limiter pulley 14 is rotated manually, forcing the nut 8 to be unscrewed from the screw 6 through the rope 13 and pulleys 10. The return springs 5 open the levers. The screwing continues until the nuts move 8 to the adjustable stops 9Λ ’

Положение регулируемых упоров 9 определяет 'рабочий' ход гаек 8 и обеспечивает синхронную работу ловителей. Подход обеих гаек 8 к упорам 9 обеспечи₅ вается за счет проскальзывания каната 13 ограничителя скорости на шкиве, дошедшем до упора первым. После чего повители скова готовы к работе.The position of the adjustable stops 9 determines the "working" stroke of the nuts 8 and ensures synchronized operation of the catchers. The approach of both nuts 8 to the stops 9 is provided by ₅ due to the slipping of the rope 13 of the speed limiter on the pulley, which reached the stop first. Then the leaders of the skov are ready to work.

Положительный эффект технического решения, реализованного в предложенном устройстве, заключается в обеспечении надежного торможения и последующего удержания кабины на направляющих при широком диапазоне изменения .массы •,5 кабины, улучшения условий эксплуатации, а именно процесса снятия кабины с ловителей.A positive effect of the technical solution implemented in the proposed device is to ensure reliable braking and subsequent retention of the cab on rails with a wide range of changes in mass •, 5 cabs, improving operating conditions, namely the process of removing the cab from catchers.

Claims

The invention relates to the field. elevator building and can be used as a safety device ensuring the safety of movement on an elevator installation, holding the elevator car on the guide rails in the event of a cable break or an increase in the speed of the elevator car; 1 sculptor. A catching device for an elevator cabin is known, which contains smooth-motion catchers installed on the cab, each of which contains two spring-loaded arms covering the guide and a pair of screw-nuts connected by means of a rope with a speed limiter, elevator ij. However, trapping devices with such catchers are complex in design and adjustment. The process of removing the cabin from the catchers after their operation and landing the cabin on the catchers is also complicated. The purpose of the invention is to improve the operating conditions of the device. To do this, each safety device is equipped with a pulley fixedly mounted on the bw-threaded part of the screw and connected to the nut with a finger, and the safety gear pulleys are covered with a loop of the specified rope. FIG. 1 shows the catcher structure; in fig. 2 is a diagram of the connection of the speed limiter cable with catcher pulleys. The safety device has two spanning arms 1 of the lever 2, interconnected by an axis 3. On the levers there are mounted power springs 4, a return hose 5 and a pair consisting of screw 6 with a stopper 7 that protects the screw from turning, and nuts 8, screwing which is limited by the stop 9. On the threadless screw 6, a pulley 10 connected to the nut 8 is installed and placed in the pole 11. The pulleys of both catchers are mounted on the beam 12 of the elevator car and are connected by a rope 13 of the speed limiter. A rope 13, tensioned between the speed limiter pulley 14 and the tensioning device block 15, covers the pulleys of both catchers with a common loop and is braked relative to the cabin with a clamp 16. Nut 8 has a pin 17, interacting with the pulley 10. The device works as follows. In the initial state, the nut 8 is turned on the screw 6 to the adjustable stop 9 and the levers 2 are separated in crqpOHH under the action of the return spring 5. During the cab movement at normal speed, the pulleys 10 are fixed, and the rope 13, moving together with the cabin, rotates the pulley 14 When the speed limiter is triggered, the pulley 14 stops and brakes the rope 13, the forward rotation of the pulleys 10, which are connected to the nuts S with a finger 17. Screwing on the nuts 8 through the power springs 4 compress the levers 2, which come in contact with the springs 4 , 1 and compress. - with increasing effort Due to the gradual increasing effort of friction between guides and levers, the cab is stopped. To remove the cab from the catchers, the pulley 14 of the limiter rotates manually, causing the rope 13 and pulleys 1O to force the nuts 8 to screw off the screw 6. Lift 5 and divorce the levers. Screwing is continued until the nuts 8 move to the adjustable stops E 8 54 The position of the adjusters of the fixed stops 9 determines the working stroke of the nuts 8 and ensures the synchronous operation of the catchers. The approach of both nuts 8 to 9 is ensured by the slippage of the rope 13 of the speed limiter on the pulley, which reaches the stop first. .After which the catchers are ready to work again. The positive effect of the technical solution implemented in the proposed device is to ensure reliable braking and subsequent retention of the cab on the guideways in a wide range of cab mass, improvement of operating conditions, namely, the process of removing the cab from the catchers. Claiming device for an elevator car, containing soft braking catchers installed on the car, each of which contains two wetted levers covering the rail and a screw-nut pair connected by means of a rope with an elevator speed limiter, different in that operating conditions, each safety device is equipped with a pulley mounted on the non-threaded part of the screw and connected with a nut with a finger, and the pulleys are caught in the loop of the specified hinge. Sources of information, which are taken into account during the examination 1. N. G. Pavlov, Lifts and lifts ,. M.-L., Mechanical Engineering, 1965, p. 9O-91, fig. 49 (prototype).

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