SU1362783A1 - Vibration exciter - Google Patents

Abstract

The invention relates to construction, to devices for mechanical excitation of energy oscillations using compressed air pressure. The purpose of the invention is to increase the service life of the vibration exciter. The vibration exciter includes conical bases 1, 2, diaphragms 3 and 4, which form the working chambers 5 and 6. In the cavity 7 of the striker 8 there is a cylindrical valve 9. The valve 9 is prevented from falling out on one side by jumper 10, and on the other side - by the collar I. The jumper 10 has openings through which the stops 12, which are prevented from falling on one side by the shoulders 13, and on the other side - the valve 9. Perpendicular to the cavity 7 are blunt-hole channels 14 for connection to the atmosphere. For flow of compressed air from the working chamber 5 into the chamber 6, the channels 15 are made in the striker. On the conical bases 1 and 2, springs W and 17 are fixed coaxially to the valve. 16 (L SAZ about: 00 co

Description

The invention relates to devices for initiating mechanical vibrations using compressed air pressure and can be used for shock and vibratory punching in construction.

The purpose of the invention is to increase the service life.

The drawing shows the vibration exciter section.

The vibrator wake consists of conical bases 1 and 2, diaphragms 3 and 4, forming working chambers 5 and 6. In cavity 7 of the striker 8 a valve 9 is placed, made in the form of a hollow cylinder. The valve 9 is prevented from falling out of the bypass hole on one side with a jumper 10, and on the other side with a collar 11.

In the bridge 10 there are openings in which the stops 12, which can be moved, are prevented from falling on one side by the shoulders 13, and from the valve 9 to the bridge 10. In this position, the external cylindrical surface of the valve blocks the exhaust channels 14 and the bypass channels are open. The drummer 8, having reached its upper position, rests against the stops 12 into the spring 16 and compresses it. When the spring is compressed so much that it creates a force of more than 10 kg, the valve 9 under the action of this force transmitted through the stops 12 will move down relative to the hammer, will open the exhaust channels 14 and close the bypass channels 15. Thus, the overflow of compressed air from the working chamber 5 to the working chamber 6 is terminated. The exhaust gas from the working chamber 6 through the cavity 7 and the exhaust channels 14 to the atmosphere begins. In this position, the stops 12, which perceive air pressure, abut against the upper end surface of the valve, as their upper end surfaces exit to the center.

The first one abuts against the valve 9. Perpendicular to the 20 chamber 5, which is under the pressure of the cavity 7, the exhaust channels 14 are made, connecting the cavity 7 with the atmosphere.

For flow of compressed air from the working chamber 5 into the chamber 6 in the drummer, the bypass channels 15 are made. Coaxially with the valve 9, springs 16 and 17 are attached to the conical bases 1 and 2. A fixed element, for example, a pipe 18, is fixed to the lower base 2.

Vibro works as follows.

The compressed air enters the channel in the conical base 1 into the working chamber 5, from where through the bypass channels 15 that are open at that time and the cavity 7 into the working chamber 6. The diaphragms 3 and 4 are bent under pressure of compressed air and adjoin to the conical base 1 and 2. The contact area of the diaphragm 4 with the conical base 2 is larger than the contact area of the diaphragm 3 with the conical base of the compressed air. With this force, the valve 9 is pressed against the shoulders 11. Under the action of the pressure of the compressed air in the working chamber 5, the drummer 8 begins to move in the direction of the working chamber 6 until it strikes the cone base 2 and fastened with it. pipe 18. At the same time, the valve is thrown by the spring 17. Then the cycle repeats.

By reducing the forces acting on the valve, the service life of the vibration exciter is increased.

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Claims (1)

Invention Formula Vibro-exciter, including interconnected conical bases, a hollow drummer with a valve with stops and exhaust channels placed in it, diaphragms attached to the drummer, placed between the bases and the arm 1. Therefore, the force developed under 40 expanding working chambers that differ the action of compressed air and acting on the drummer 8 from the side of the working chamber 6, is larger than from the side of the working chamber 5. The drummer 8 begins to rise. The valve 9 will axially direct that, in order to increase its service life, the drummer is made with additional channels connecting the working chambers and a jumper with holes in its cavity, through which the valve stops are blended to its lower end surface, air pressure, which presses the valve 9 to the jumper 10. In this position, the external cylindrical surface of the valve blocks the exhaust channels 14 and the bypass channels are open. The drummer 8, having reached its upper position, rests against the stops 12 into the spring 16 and compresses it. When the spring is compressed so much that it creates a force of more than 10 kg, the valve 9 under the action of this force transmitted through the stops 12 will move down relative to the hammer, will open the exhaust channels 14 and close the bypass channels 15. Thus, the overflow of compressed air from the working chamber 5 to the working chamber 6 is terminated. The exhaust gas from the working chamber 6 through the cavity 7 and the exhaust channels 14 to the atmosphere begins. In this position, stops 12, which receive air pressure, abut against the upper end surface of the valve, since their upper end surfaces extend into 0 a barrel chamber 5, which is under pressure, a barrel chamber 5, which is under compressed air pressure. With this force, the valve 9 is pressed against the shoulders 11. Under the action of the pressure of the compressed air in the working chamber 5, the drummer 8 begins to move in the direction of the working chamber 6 until it strikes the cone base 2 and fastened with it. pipe 18. At the same time, the valve is thrown by the spring 17. Then the cycle repeats. By reducing the forces acting on the valve, the service life of the vibration exciter is increased. 0 Invention Formula The vibration exciter, which includes conical bases interconnected, a hollow drummer with a valve having stops, and exhaust ducts placed in it, diaphragms attached to the drummer, placed between the bases and that, in order to increase its service life, the drummer is made with additional channels connecting the working chambers and a jumper with openings installed in its cavity through which it is hollow in the form of a hollow cylinder.