SU745724A1 - Shock-absorber - Google Patents

Description

(54) SHOCK ABSORBER

I

The invention relates to a transport engineering industry and can be used in the construction of shock absorbers designed to fasten various objects on vehicles, for example, to mount a body on a car frame. In addition, this device can be used to mount a power station on a vehicle body platform for the purpose of vibration-proofing and soundproofing of the body against a running power station.

A shock absorber is known, comprising a housing, conical damping elements H, an upper flange interconnected by a fixed bolt with a lock and a nut 11.

In this shock absorber, the damping elements are constantly under load, and the shock absorber is always in the working position, regardless of the loading conditions (dynamic, vibratory or static loading), which leads to rapid wear, loss of elastic characteristics and reduced durability of the damping elements.

. In addition, this shock absorber does not provide for limiting the oscillations of the upper

flange relative to the body and, therefore, there is no limitation of oscillations of the object fixed on the shock absorber during dynamic loads, often many times exceeding static loads, for example, when the vehicle is moving with the body mounted on it along dirt roads or off-road. When these oscillations occur, deformation of the damping elements unlimited in height leads to the appearance of unacceptably high stresses in them, causing accelerated wear of the damping elements and a reduction in the durability of the shock absorber.

The purpose of the invention is to increase the durability of the shock absorber.

3

Claims (2)

This goal is achieved by the fact that, in a known shock absorber, the housing is equipped with a conical catcher and a movable stop, the upper flange is provided with a stopper freely placed in the housing between the 20 conical catcher and the movable stop coaxially with the conical damping elements, while the tension bolt is freely placed inside the movable stop and the stopper . FIG. i shows the shock absorber in working position, general view; in fig. 2 - the same non-working position. The shock absorber includes a housing I, conical damping elements 2 and the upper flange 3, interconnected by a fastening bolt 4.c, bearing washer 5, spherical washer 6 and anchor 7.. A conical safety device 8 is installed in the upper part of the housing 1, and a movable stop 10 is attached to the lower part of the housing 1 9. Both parts of the housing are fastened with bolts 11 to the frame of the car 12. The upper flange 3, fixed by bolts 13 to the body 14, is fitted with a stop 15, fixed a nut 16 n freely placed in the housing 1 between the conical catcher 8 and the movable stop .10 coaxially with the conical damping elements 2. D (U10vka fastening bolt 4 is placed inside the movable stop 10, the rod of this bolt freely passes podzhmogo an emphasis 10 and limiter 15. The contact surface of the restrictor 15 with the conical sleeve 8 is made conical, and the interface between the limiter 15 and the movable stop 10. Excess / (not spherical ;. The rotation of the movable stop 10 in the housing 1 is carried out with a rotary screw 17 installed in the hole at the end of the support stop 10. A. The absorber works as follows. In the working position of the shock absorber, the visor mount 10 is in the lowest position, while the lower copeptic damping element 2 is compressed under the body's 5th mass 14 transmitted through the upper flange 3. Between the stopper 5, which is lowered downward in the result of the deformation of the lower damping. element 2, and a conical catcher. 8 there is a gap. There is also a gap between the upper end of the guard 15 n support washer 5, the size of which is chosen smaller than the gap between the stop 15 and the end hook 8. Between the spherical surfaces of the stop 15 and the rolling stop TO also: there is a gap. When a dynamic load is directed downwards, an elastic deformation of the N1 of the damping element takes place in the limits of the gap between the spherical over the 1st n} limiter 15. and the movable stop 10. When the maximum permissible load is exceeded, contact occurs { sphe- surfaces of the limiter 5 and the movable stop iO, which prevents .more} For the deformation of the lower damping element 2 and prevents it from being destroyed. Under the influence of a dynamic load directed upwards, elastic deformation of the upper damping element 2 occurs within the gap between the upper end of the restrictor 15 and the support washer 5. When the maximum permissible load is exceeded, the restrictor 15 and the support washer 5 are in contact, which prevents further deformation of the upper damping element 2 and prevents its destruction. at the same time, a gap is maintained between the stop 15 and the conical catcher 8. To move the shock absorber to the off position, rotate the movable stop 10 by the knob 17, providing the lift of the limiter 15 together with the upper flange 3 until the limiter 15 is moved with the movable stop 10 to the conical catcher 8. At the same time, 38 due to lifting the upper flange 3 and creating a gap between it and the lower end By a natural damping element 2, the load is removed from the lower conical damping element 2. Lifting up the upper flange 3 does not cause the loading of the upper damping element 2, since The pore 10 is provided with the ability to move upward of the clamping bolt 4 with the support washer 5, as a result of which the upper conical damping element 2 is loaded only with the weight of the support washer 5 and the attachment bolt 4. Thus, in the idle position of the shock absorber, rigid interaction of the housing 1 takes place. with the upper flange 3 without loading the conical damping elements 2. .... The presence of the limiter, freely placed in the housing and rigidly interacting under the influence of the movable stop with a conical catcher, ensures the transmission of the force in the inoperative position of the shock absorber when it is statically loaded between the upper flange and the body without loading the damping elements, which increases the service life of the shock absorber. - .. . . . Limiting the amount of deformation of the damping elements when dynamically loading a1% 10 of the tester in the working position due to contact of the limiter with a movable stop or bearing washer eliminates the possibility of impacting the damping elements, which also increases the service life of the damper. Claims 1. A shock absorber comprising a body, conical damping elements and a top N flange interconnected by a clamping bolt with a support washer and a secret. five characterized in that, in order to increase durability, the housing is provided with a conical catcher and a movable stop, and the upper flange is provided with a limiter freely positioned in the housing between the conical catcher and the movable emphasis coaxially with coic damping elements. 2. A shock absorber according to claim I, characterized in that the clamping bolt is freely positioned within the movable stop and the stopper. Sources of information taken into account in the examination I. USSR author's certificate 5 No. 253494, cl. B 60 G 17/02. 1970. Fig1 745724