CN105840713A - Damper with viscous-friction combined action - Google Patents

Abstract

A viscous-friction damper to solve the problem of reduced life of existing dampers due to friction. It includes a left pulling ear, a cylinder body, a piston rod, a cylinder head I, an outer sliding body, a friction plate, a booster piston, a cylinder head II and a right pulling ear. There is a left pulling ear at one end of the cylinder body. Cylinder cover Ⅰ and cylinder cover Ⅱ are arranged inside and at one end of the body, and a piston rod is arranged in the oil chamber. There are four through holes on the outer wall of the cylinder, a booster piston is arranged in the through holes, four friction plates are arranged on the outer wall of the cylinder, the outer sliding body is sleeved outside the cylinder, and one end is connected with the The right ear is connected. The damping force of the present invention is composed of viscous damping force and frictional damping force. When the source does not vibrate, there is no pressure between the friction plate and the outer sliding body. The frictional damper has long service life and good shock absorption effect.

Description

A damper with combined viscous-friction action

technical field

The invention relates to the technical field of dampers, in particular to a damper with combined viscous-friction effects.

Background technique

Vibration exists in many fields. For example, in the field of mechanical processing, the precision of the processed parts is reduced due to vibration; in the field of construction, buildings will be destroyed due to natural disasters; vibration will also bring noise, which will bring harm to people's health, etc. Vibration has become an important factor restricting the development of many fields, however, vibration phenomenon is unavoidable in many cases. Therefore, it is very important to adopt a reasonable control structure to reduce vibration.

The working principle of the existing friction damper is mainly: rely on the friction between the friction body and the cylinder to better achieve the effect of vibration reduction. The effect of damping force. Therefore, the existence of friction will cause the friction body to be severely worn quickly, thereby reducing the service life, and the damping effect of the damper is obviously reduced, thereby increasing the cost.

Contents of the invention

The purpose of the present invention is to provide a viscous-friction damper, which is used to solve the problem of life reduction of existing dampers due to friction.

The technical solution adopted by the present invention to solve the technical problem is: a viscous-friction damper, which is characterized in that it includes a left pull ear, a cylinder body, a piston rod, a cylinder head I, an outer sliding body, a friction plate, a booster Press the piston, cylinder head II and right pulling ear, the cylinder body is a hollow structure, one end of the cylinder body is provided with a left pulling ear, the inside and one end of the cylinder body are provided with cylinder head I and cylinder head II, the Cylinder cover I and cylinder cover II are in the shape of a cylinder with a through hole in the middle. The piston rod is a rod-shaped structure with slender rods at both ends and a piston-shaped middle. The cylinder cover I, cylinder cover II, piston rod and inner The barrel forms a closed oil chamber, and a piston rod is arranged in the oil chamber. The two ends of the piston rod match the through holes in the middle of cylinder head I and cylinder head II. One end of the piston rod is connected with the right pull ear. A through hole, a booster piston is arranged in the through hole, four friction plates are arranged on the outer wall of the cylinder, the inner wall of the friction plate is in contact with the booster piston, the outer wall of the friction plate is in contact with the inner wall of the outer slide, the The outer sliding body is in the shape of a hollow cylinder, which is sleeved outside the cylinder body, and one end is connected with the right pulling ear.

Further, the friction plate is in the shape of a semicircle.

Further, a small damping hole is opened on the piston in the middle part of the piston rod.

Further, the piston rod is threadedly connected to the right pull ear.

The beneficial effect of the present invention is: a kind of viscous-friction composite effect damper provided by the present invention, its damping force is composed of viscous damping force and frictional damping force, when the source does not vibrate, the friction plate and the outer sliding There is no pressure between the bodies, which can prolong the service life of the friction plate and reduce the cost of use.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Figure 2 is a sectional view of the cylinder body;

Fig. 3 is a three-dimensional schematic diagram of the cylinder body;

Fig. 4 is a schematic diagram of the piston rod;

Fig. 5 is a three-dimensional schematic diagram of the friction plate;

Figure 6 is a sectional view of the cylinder head;

Figure 7 is a three-dimensional schematic diagram of the cylinder head.

In the figure: 1 left pulling ear, 2 cylinder block, 3 piston rod, 4 cylinder head Ⅰ, 5 outer sliding body, 6 friction plate, 7 booster piston, 8 cylinder head Ⅱ, 9 right pulling ear, 21 through hole, 31 , the damping hole.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 7, the present invention includes 1 Zola ear, 2 cylinder blocks, 3 piston rods, 4 cylinder head I, 5 outer sliding body, 6 friction plates, 7 booster piston, 8 cylinder head II and 9 Pull the ear right.

As shown in Figure 1, the cylinder body 2 is a cylindrical structure and placed horizontally. The left end of the cylinder body is connected to the left pull ear through threads. At the right end of body 2, there is a through hole in the middle of cylinder head I4 and cylinder head II8. The inner walls are in contact, and the cylinder body 2, cylinder head I4, cylinder head II8 and piston rod 3 form a closed oil chamber. As shown in Figure 4, there are two small damping holes 31 on the piston in the middle of the piston rod 3. The function of the small damping holes is When the piston rod moves, let the oil pass through the damping holes to generate damping force, as shown in Figure 2, four through holes 21 are opened on the side wall of the cylinder body 2, and four booster pistons 7 are arranged in the four through holes 21 , four friction plates 6 are installed at the positions corresponding to the outer wall of the cylinder body 2 and the through hole 21, the inner walls of the friction plates 6 are in contact with the booster piston 7, the outer walls are in contact with the inner walls of the outer sliding body 5, and the outer sliding body 5 is set in the cylinder Outside the body 2, one end is open and the other end is connected to the right pull ear 9 through threads, and the inside of the right pull ear 9 has a threaded hole, which is connected to one end of the piston rod.

During installation, the left pull ear 1 is connected with the foundation, and the right pull ear 9 is connected with the seismic source. When working, the right pull ear 9, the outer sliding body 5 and the piston rod 3 vibrate together with the shock source, and the piston in the middle of the piston rod 3 is left and right in the oil chamber. Due to the function of the damping hole 31, when the oil passes through, a viscous damping force will be generated to achieve the purpose of shock absorption. At the same time, when the piston rod 3 moves to the left, the oil pressure in the left half of the oil chamber will increase. The oil pressure is transmitted to the friction plate 6 through the booster piston 7, so that extrusion friction occurs between the friction plate 6 and the outer sliding body 5, so as to achieve the purpose of shock absorption. When the piston rod 3 moves to the right, the oil chamber moves to the right Half of the oil pressure will rise, and the oil pressure will be transmitted to the friction plate 6 through the booster piston 7, so that extrusion friction will be generated between the friction plate 6 and the outer sliding body 5, so as to achieve the purpose of shock absorption, so that the viscous The hysteresis-friction damper realizes the purpose that the damping force is composed of two parts: the viscous damping force and the frictional damping force. At the same time, when the source does not vibrate, there is no pressure between the friction plate and the outer sliding body, and the life of the friction plate is extended. service life and reduce the cost of use.

Claims (4)

1. A viscous-friction damper is characterized in that it comprises a left pulling ear, a cylinder block, a piston rod, a cylinder cover I, an outer sliding body, a friction plate, a booster piston, a cylinder cover II and a right pulling ear, The cylinder body is a hollow structure, one end of the cylinder body is provided with a left pull ear, and a cylinder head I and a cylinder head II are arranged inside and at one end of the cylinder body. The cylindrical shape of the hole, the piston rod is a rod-shaped structure with slender rods at both ends and a piston-like structure in the middle, the cylinder head I, cylinder head II, piston rod and the inner cylinder form a closed oil chamber, and the oil chamber is equipped with Piston rod, the two ends of the piston rod are matched with the through holes in the middle of cylinder head I and cylinder head II, one end of the piston rod is connected with the right pulling ear, and there are four through holes on the outer wall of the cylinder , a booster piston is arranged in the through hole, four friction plates are arranged on the outer wall of the cylinder, the inner wall of the friction plate is in contact with the booster piston, the outer wall of the friction plate is in contact with the inner wall of the outer sliding sleeve, and the outer sliding sleeve It is in the shape of a hollow cylinder, set on the outside of the cylinder body, and one end is connected with the right pull ear. 2. A viscous-friction damper according to claim 1, characterized in that, the friction plate is in the shape of a semicircle. 3. A viscous-friction damper according to claim 1, wherein a small damping hole is opened on the piston in the middle of the piston rod. 4. A viscous-friction damper according to claim 1, wherein the piston rod is threadedly connected to the right pulling ear.