SU865737A1

SU865737A1 - Pneumatic vibrator

Info

Publication number: SU865737A1
Application number: SU731915262A
Authority: SU
Inventors: Владимир Никифорович Власов; Жорес Григорьевич Мухин; Алексей Павлович Михайлов; Николай Григорьевич Дубынин
Original assignee: Институт горного дела Сибирского отделения АН СССР
Priority date: 1973-05-07
Filing date: 1973-05-07
Publication date: 1981-09-23

Description

Изобретение относится к устройствам для возбуждения колебаний в вибрационных питателях, применяемых для выпуска и погрузки горной массы.The invention relates to a device for exciting vibrations in vibration feeders used for the release and loading of rock mass.

Известны пневматические вибраторы, включающие неподвижное основание с силовой камерой, упругая манжета-клапан которой имеет, по меньшей мере, одну подвижную уплотнительную кромку.Known pneumatic vibrators, including a fixed base with a power chamber, the elastic cuff-valve of which has at least one movable sealing edge.

Однако несмотря на простоту конструкции и надежность в работе они не позволяют обеспечить дальнейшее повышение эффективности ударного действия (возмущения) и снижение энергоемкости при вибрационном транспортировании горной массы по рабочим площадкам питателей.However, despite the simplicity of the design and reliability in operation, they do not allow to provide a further increase in the efficiency of shock (disturbance) and a decrease in energy consumption during vibration transportation of rock mass on the working platforms of feeders.

Цель изобретения - повышение эффективности ударного действия вибратора/The purpose of the invention is to increase the effectiveness of the shock of the vibrator /

Поставленная цель достигается тем, что вибратор снабжен ударником, контактирующим по периферии нижней части с манжетой-клапаном.This goal is achieved by the fact that the vibrator is equipped with a drummer in contact on the periphery of the lower part with a cuff-valve.

Кроме того, вес ударника превышает силу упругой деформации рабочего хОда манжеты—клапана. При этом ударник соединен с неподвижным основанием при помощи упругих элементов, например пружин, а манжета-клапан по периферии жестко соединена с ударником. Верхняя часть ударника снабжена эластичным элементом.In addition, the weight of the striker exceeds the force of elastic deformation of the working course of the cuff — valve. In this case, the striker is connected to the fixed base by means of elastic elements, such as springs, and the cuff-valve on the periphery is rigidly connected to the striker. The upper part of the drummer is equipped with an elastic element.

На фиг.1 изображен предлагаемый вибратор, общий вид} на фиг.2 - то же, в момент взаимодействия ударника с рабочей площадкой.In Fig.1 shows the proposed vibrator, General view} in Fig.2 - the same at the moment of interaction of the drummer with the work platform.

Предлагаемый вибратор состоит из неподвижного основания 1 и манжетыклапана 2, на которой расположен ударник 3 с эластичным элементом 4.The proposed vibrator consists of a fixed base 1 and a cuff of the valve 2, on which the hammer 3 with an elastic element 4 is located.

Вибратор расположен на почве 5 выпускной выработки под рабочей площадкой 6 питателя.The vibrator is located on the basis of 5 exhaust workings under the working platform 6 of the feeder.

Ударник вибратора посредством упругих элементов, например пружин 7, соединен с неподвижным основанием и контактирует по периферии нижней части с манжетой-клапаном, которая выполнена, по меньшей мере, с одной подвижной уплотнительной кромкой 8. Манжета-клапан образует между ударником и неподвижным основанием силовую камеру 9, соединенную с источником сжатого воздуха при помощи шланга 10.The vibrator hammer by means of elastic elements, such as springs 7, is connected to the fixed base and contacts on the periphery of the lower part with a valve cuff, which is made with at least one movable sealing edge 8. The valve cuff forms a force chamber between the hammer and the stationary base 9, connected to a source of compressed air using a hose 10.

Манжета-клапан может быть жестко соединена с основанием или с ударником. Кроме того, манжета-клапан может быть выполнена с С-образной формой сечения и вообще не соединена ни с ударником, ни с неподвижным основанием. Эластичный элемент 4 может быть выполнен в виде прокладки из прорезиненной ткани и служит для смягчения ударных нагрузок, передаваемых ударником на рабочую площадку. Между ударником и рабочей площадкой при статическом состоянии вибратора (фиг.1) должен быть выдержан зазор Н, равный рабочему ходу ударника, причем рабочий ход ударника должен быть больше, чем рабочий ход уплотнительной кромки манжеты-клапана, чтобы в процессе работы образовывался зазор h (фиг.2), обеспечивающий .’выхлоп отработанного рабочего тела, например сжатого воздуха из силовой камеры.The cuff valve can be rigidly connected to the base or to the hammer. In addition, the cuff-valve can be made with a C-shaped cross-section and is generally not connected either to the hammer or to a fixed base. The elastic element 4 can be made in the form of a strip of rubberized fabric and serves to mitigate the shock loads transmitted by the drummer to the work site. Between the striker and the working platform with the vibrator’s static state (FIG. 1), a gap H must be maintained equal to the stroke of the striker, and the stroke of the striker must be greater than the stroke of the sealing edge of the cuff-valve so that a gap h ( figure 2), providing. 'exhaust exhaust fluid, such as compressed air from the power chamber.

Вибратор работает следующим образом.The vibrator works as follows.

При открытии пускового крана сжатый воздух по шлангу поступает в силовую камеру и воздействует на удар·^ ник по всей площади, ограниченной манжетой-клапаном, и на уплотнительную кромку последней, плотно прижимая ее к неподвижному основанию. Под действием сжатого воздуха ударник 3 с нарастающей скоростью движется вверх и наносит удар по рабочей площадке, приводя ее в колебательное движение. При движении ударника вверх, еще до нанесения удара, манжета-клапан своей уплотнительной кромкой 8 в силу выбора всего рабочего хода отсоединяется от основания 1, и через образовавшийся зазор h из силовой камеры происходит выхлоп обработанного сжатого воздуха в атмосферу.When the start-up tap is opened, compressed air flows through the hose into the power chamber and acts on the impact on the entire area bounded by the cuff-valve, and on the sealing edge of the latter, tightly pressing it to the fixed base. Under the action of compressed air, the striker 3 with increasing speed moves upward and strikes the working platform, causing it to oscillate. When the striker moves upward, even before striking, the cuff valve with its sealing edge 8 is disconnected from the base 1 due to the choice of the entire working stroke, and the processed compressed air is exhausted into the atmosphere through the formed gap h from the power chamber.

После нанесения удара ударник 3 под действием отскока и собственного веса, а при наличии упругих элементов 7 и под действием их, начинает двигаться вниз до прижатия манжеты-клапана 2 к основанию 1 с обеспечением герметичности силовой камеры 9, несколько сжимая при этом воздух, постоянно поступающий по шлангу 10. Затратив всю кинетическую энергию, ударник останавливается и под действием давления в силовой камере 9 начинает совершать рабочий ход, и цикл повторяется.After striking, the striker 3 under the influence of the rebound and its own weight, and in the presence of elastic elements 7 and under the influence of them, begins to move downward until the cuff-valve 2 is pressed against the base 1 to ensure the tightness of the power chamber 9, while somewhat compressing the air constantly entering along the hose 10. Having spent all kinetic energy, the hammer stops and under the influence of pressure in the power chamber 9 begins to make a working stroke, and the cycle repeats.

Claims

The invention relates to devices for exciting oscillations in vibratory feeders used for the production and loading of rock mass. Pneumatic vibrators are known, including a fixed base with an inflection chamber, the elastic cuff-valve of which has at least one movable sealing lip. However, despite the simplicity of the design and reliability in operation, they do not allow for a further increase in the efficiency of the percussion (disturbance) and a decrease in energy intensity during vibratory transport of the rock mass over the working sites of the feeders. The purpose of the invention is to increase the efficiency of the shock action of the vibrator. The goal is achieved by the fact that the vibrator is provided with a drummer, which is in contact along the periphery of the lower part with the cuff-valve. In addition, the weight of the impactor exceeds the elastic force of the working tube of the cuff valve. In this case, the firing pin is connected to the fixed base by means of elastic elements, for example springs, and the cuff-valve is rigidly connected to the firing pin along the periphery. The upper part of the drummer is provided with an elastic element. Figure 1 shows the proposed vibrator, general view on 4 mg. 2 - the same, at the moment of interaction of the drummer with the working platform. The proposed vibrator consists of a stationary base 1 and a cuff of the valve 2, on which the hammer 3 with the elastic element 4 is located. The vibrator is located on the ground 5 of the output development under the working platform 6 of the feeder. The shock absorber through the elastic elements, such as springs 7, is connected to the fixed base and contacts on the periphery of the lower part with the cuff-valve, which is made with at least one movable sealing edge 8. The cuff-valve forms a force between the nick and the fixed base. a chamber 9 connected to a source of compressed air by means of a hose 10. The cuff-valve can be rigidly connected to the base or to a hammer. In addition, the cuff-valve can be made with a C-shaped cross-section and not connected at all with the Drummer, or with a fixed base. The elastic element 4 can be made in the form of a gasket made of rubberized fabric and serves to soften the shock loads transmitted by the drummer to the working platform. Between the drummer and the working section, the static state of the vibrator (.fig.1) must be sustained by a gap H equal to the stroke of the striker, and the stroke of the striker must be greater than the stroke of the sealing edge of the cuff valve, so that during the work a gap h is formed (Fig. 2), which provides / exhausted working fluid, for example compressed air power chamber. The vibrator works as follows. When the starting crane is opened, the compressed air enters the power chamber through the hose and acts on the impactor over the entire area bounded by the cuff-valve and on the sealing edge of the latter, tightly pressing it against the fixed base. Under the action of compressed air, the impactor 3 moves at an increasing speed and strikes the working platform, driving it in a vibrational motion. During the movement of the hammer, even before the impact is struck, the cuff-valve with its sealing edge 8, due to the choice of the entire stroke, is disconnected from the base 1, and the formed compressed air exhausts into the atmosphere through the gap formed h. After striking the impact, the impactor 3 under the action of rebound and its own weight, and in the presence of elastic elements 7 and under the action of them, begins to move downward until the cuff-valve 2 is pressed against the base 1 to ensure the tightness of the force chamber 9, while compressing it somewhat arriving along the hose 10. Having expended all the kinetic energy, the striker stops and under the action of pressure in the force chamber 9 begins to make a working stroke, and the cycle repeats. Claim 1. Pneumatic vibrator, including a fixed base with a power chamber, an elastic cuff-valve which has at least one movable sealing edge, 1 distinguished by the fact that, in order to improve the efficiency of the shock action of the vibrator, the latter is provided with a drummer contacting periphery of the lower part with a cuff valve.

2. Vibrator POP.1, distinguished by the fact that the weight of the impactor and the strength of the elastic deformation of the stroke of the cuff-valve.

3. Vibrator on PP. 1 and 2, about t -: 7, due to the fact that the hammer is connected to the fixed base by means of elastic elements, for example, springs.

4. Vibrator according to claims 1-3, which is based on the fact that the sleeve valve on the periphery is rigidly connected to the drummer.

5. Vibrator according to claims 1-4, of which is that the upper part of the drummer is equipped. elastic element.