SU884712A1

SU884712A1 - Crusher safety apparatus

Info

Publication number: SU884712A1
Application number: SU802864321A
Authority: SU
Inventors: Генрих Александрович Сперанский; Борис Израйлович Коновалов; Анатолий Иванович Косарев
Original assignee: Всесоюзный научно-исследовательский институт строительного и дорожного машиностроения
Priority date: 1980-01-04
Filing date: 1980-01-04
Publication date: 1981-11-30

Description

(54) ПРЕДОХРАНИТЕЛЬНОЕ УСТРОЙСТВО ДРОБИЛКИ(54) CRUSHER SAFETY DEVICE

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Изобретение относитс к дроблению и измельчению материалов, пород.,а именно, к предохранительным устройствам преимущественно щековых дробилок, и может быть использовано в горнорудной , металлургической и других отрасл х , примен ющих дробилки.The invention relates to the crushing and grinding of materials, rocks, namely, to safety devices, mainly jaw crushers, and can be used in the mining, metallurgical and other industries that use crushers.

Известно предохранительное устройство дробилки, содержащее водило на несущем шкив-маховик приводном ее валу, ролик, вход щий в паз; подпружиненный ползун с соединительным рычагом , опорный рычаг и электровыключатель 1 A crusher safety device is known, which contains a carrier on a carrying pulley-flywheel driven by its shaft, a roller entering the groove; spring loaded slide with connecting lever, supporting lever and electric switch 1

Известное устройство характеризуетс недостаточной надежностью в работе , св занной с компоновкой узлов, не учитывающей действи сил при его вращении и срабатывании.The known device is characterized by a lack of reliability in operation associated with the arrangement of the nodes, which does not take into account the action of forces during its rotation and operation.

Цель изобретени - повьшеиие надежности .The purpose of the invention is higher reliability.

Поставленна цель достигаетс тем, что в устройстве, содержащем водило на несущем шкив-маховик приводнс «1 ее валу, ролик, вход щий в паз., подпружиненный ползун с соединительным рычагом, опорный рычаг и электровыключатель , ползун и рычаги смонтированы на-водиле, паз выполнен на шкиве и ориентирован центробежноThe goal is achieved by the fact that in the device containing the carrier on the bearing pulley, the flywheel is driven to its shaft, a roller entering the groove., A spring-loaded slide with a connecting lever, a supporting lever and an electric switch, a slide and levers mounted on the driver, a groove made on a pulley and centrifugally oriented

относительно ролика, а опорный рычаг шарнирно св зан одним концомс водилом , другим - с соединительным рычагом и несет солик.relative to the roller, and the support arm is pivotally connected at one end by the carrier, the other by the connecting lever and is carried by the solik.

Опорный рычаг, снабжен грузом-массой центробежного назначени . При этом опорный рычаг снабжен стержнем, установленным эксцентрично относительно оси вращени с возможностью The support arm is provided with a centrifugal load-mass. In this case, the support arm is provided with a rod mounted eccentrically relative to the axis of rotation with the possibility of

10 бесконтактного его взаимодействи с аксиально неподвижно установленным выключателем при срабатывании устройства .10 its contactless interaction with an axially fixed switch when the device is triggered.

.На фиг. 1 показано устройство-,.In FIG. 1 shows a device;

15 рабочее положение;на фиг. 2 - то же, после срабатывани в результате перегрузки; на фиг. 3 - узел выключател , разрез А-А на фиг.2.15 operating position; in FIG. 2 - the same, after actuation as a result of an overload; in fig. 3 - switch assembly, section A-A in FIG.

Предохранительное.устройство служит. муфтой, соедин ющей приводной вал 1 (фиг.1) дробилки со шкивом- . маховиком 2, и смонтировано на водиле 3. Устройство содержит опорный рычаг 4, шарнирно св занный Одним The safety device serves. the coupling connecting the drive shaft 1 (Fig. 1) of the crusher with a pulley -. flywheel 2, and mounted on the carrier 3. The device includes a support arm 4, pivotally connected One

Claims

25 with the carrier and the other with the connecting lever 5, which, in turn, is pivotally connected to the spring-loaded slider 6 installed in the guide glass 7 of the carrier. The force of the elastic element is controlled by moving the stop 8 by the bolt 9. The support arm 4 carries the roller 10, the load 11 and the rod 12, which is mounted eccentrically relative to the axis of rotation 13 of the drive shaft. The roller 10 is introduced into power engagement with a groove 14, made on the pulley. The electrical switch 15 is contactless, for example inductive, fixed, axially on the base 16, which is stationary relative to the pulley, opposite the end of the drive shaft. The device works as follows. In the process of stable operation of the crusher, the pulley-flywheel 2 (Fig. 1) transmits the torque and rotation to the shaft 1 through a roller-groove engagement contact pair, the roller being pressed to the groove surface due to the elastic and centrifugal forces. Last created, mostly. The masses of the load 11 and the lever 4 itself, when rotating with a pulley. In the event of an overload, for example, if an indelible object enters the crushing chamber, shaft 1 stops, the centrifugal force drops sharply and, as the flywheel continues to rotate, roller 10 with lever 4 and lever 5 are pressed to a new position to the center of the shaft, overcoming the spring resistance of the slide block b 2). At the same time, the end of the rod 12, having previously described the circular circular path around the axis 13j, enters the central zone of action of the switch 15 and, according to the signal of the latter, the drive of the core turns off. To eliminate the causes of overloading the lever 4 is pressed from the center of the shaft, the roller is inserted into the groove. Reducing the load on the parts of the mechanism and its simplification, achieved by conveniently placing them at a greater distance from the center of rotation, as well as the rational use of centrifugal forces and non-contact control of the drive significantly increases the reliability of the proposed device. Claims of the Invention spring-loaded slider with connecting lever, supporting lever and electroswitch, characterized in that, in order to increase reliability in operation, the slider and levers are mounted on the carrier, the groove is made on the pulley and oriented centrifugally relative to the roller, and the supporting lever is hinged at one end with the carrier , others - with a connecting lever and carries a roller.

2. The device according to Claim 1, of which is. the support arm is provided with a weight-mass of a central destination.

3.- The device according to claim 1, wherein the supporting arm is provided with a rod, is installed eccentrically relative to the axis of rotation with the possibility of its contactless interaction with an axially fixed switch when the device is triggered. Sources of information taken into account during exertiz 1. USSR Copyright Certificate № 430883, cl. B 02 C 1/02, 1972.

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