RU2558035C1 - Shock absorber of single action - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: in a shock absorber of single action, which includes a housing, elastic and damping elements, there additionally contained is an elastic damping destructible element that is attached on support pins to plates-stops by means of a damping base with screws, and a sleeve of single action, which is made from brittle damageable material, for example porcelain, is attached by means of a flange with screws to the damping base coaxially to the pin. The elastic part of the shock absorber is made in the form of at least three plate springs facing with their convex part to the side of the pin axis, on which there is a threaded section with a small pitch for attachment of a clamping element of a sleeve type with grooves for fixation of one of the ends of plate springs, the other end of which is fixed in the damping base by means of cast polyurethane.

EFFECT: improving reliable actuation of explosion-proof devices at emergency explosion at the site.

1 dwg

Description

The invention relates to protective devices, for example, shock absorbers used in explosive objects.

A device for explosion-proof panels is known (application DE No. 19638658, IPC E04B 1/92 dated 04/16/1998), where the possibility of raising and lowering the panel to its original place in the explosion is carried out by the action of shock absorbers inserted into the support pipes.

The closest technical solution to the claimed object is a method of explosion protection of industrial buildings according to the patent of the Russian Federation No. 2471936, class. E04B 1/92, (prototype). The explosion-proof plate consists of an armored metal frame with an armored metal sheathing and lead filler. In the coating of the object near the opening, four support rods are fixed, telescopically inserted into fixed support pipes with shock absorbers, embedded in the panel.

A technically achievable result is an increase in the reliability of operation of explosion-proof devices during an emergency explosion at the facility, as well as the preservation of the main components of the safety structure due to the presence of a one-time shock absorber.

This is achieved by the fact that in a disposable shock absorber comprising a housing, elastic and damping elements, an additionally elastic-damping collapsing element is additionally mounted, which is fastened to the support rods to the abutment sheets by means of a damping base with screws, and is attached to the damping base, coaxially by the screw, by means of a flange with screws a single-action sleeve made of a brittle, collapsing material, such as porcelain, while the elastic part of the shock absorber is made in the form of at least , three leaf springs facing their convex part towards the axis of the rod, on which there is a threaded portion with a small pitch for mounting a sleeve-type clamping element with grooves for fixing one of the ends of the leaf springs, the other end of which is fixed in the damping base by injection molding polyurethane.

The drawing shows a diagram of a one-time shock absorber.

A single-acting shock absorber is an elastic-damping collapsing element, which is mounted on the support rods 1 to the stop sheets 2 by means of a damping base 3 with screws 4. To the base 3, coaxially to the shaft 1, is attached by a flange 7 with screws 8 a single-use sleeve 6 made of brittle, collapsing material, such as porcelain. The elastic part of the shock absorber is made in the form of at least three leaf springs 5 facing its convex part towards the axis of the rod 1, on which there is a threaded section 11 (thread with a small pitch) for fastening the clamping element 9 of the sleeve type with grooves 10 for fixing one of the ends of the leaf springs 5, the other end of which is fixed in the damping base 3 by injection molding polyurethane.

A variant is possible (not shown in the drawing) when the elastic part of the shock absorber is made in the form of at least three leaf springs 5 facing their convex part away from the axis of the rod 1, on which there is a threaded section 11 with a small pitch for attaching the clamping element 9 sleeve type with grooves 10 for fixing one of the ends of the leaf springs 5, the other end of which is fixed in the damping base 3 by injection molding polyurethane.

Assembly of a single-acting shock absorber is carried out in the following sequence. An abutment sheet 2 is welded to the rod 1, perpendicular to its axis, and then screws 3 are fastened to it with a base 3 having grooves (not shown in the drawing) for installing one of the ends of the leaf springs 5, which are filled with injection molded polyurethane. After that, a sleeve 6 is installed on the rod 1, made of a brittle, collapsing material, which is pressed along the threaded section 11 by a clamping element 9 of the sleeve type with grooves 10 to simultaneously fix the other end of the leaf springs 5. Thus, the collapsing element is ready for installation on bang object.

A single-acting shock absorber operates as follows.

From the impact of the shock wave, the explosion protection element (not shown in the drawing) abuts against the clamping element 9 of the sleeve type, and the thread is cut off on the threaded section 11 of the rod 1. With the further movement of the explosion protection element, the clamping element 9 destroys the disposable sleeve 6 made of brittle, collapsing material, such as porcelain, and compresses the elastic elements made in the form of leaf springs 5, which, being compressed from the increasing pressure of the shock wave, are released at a certain moment from the fastening of their ends in the grooves 10 and in the base 3 and fall, freeing the way for further advancement of the clamping element 9 along the rod 1 until it interacts with the damping base 3. In the case of a large (more than 5 kPa) pressure of the blast wave, or the welding joint that secures the support rods 1 is cut off to the stop sheets 2, or the rods 1 are jammed and broken.

Using the proposed technical solution allows the prevention of explosive objects from destruction and the reduction of harmful substances into the atmosphere during an accidental explosion.

Claims (1)

A disposable shock absorber containing elastic and damping elements, characterized in that it further comprises an elastic damping collapsing element that is attached to the support rods to the stop sheets by means of a damping base with screws, and a disposable sleeve is attached to the damping base, coaxially by the screw, made of brittle, crumbling material, such as porcelain, while the elastic part of the shock absorber is made in the form of at least three sheet springs, with their convex part facing the axis of the rod, on which there is a threaded section with a small pitch for fixing the clamping element of the sleeve type with grooves for fixing one of the ends of the leaf springs, the other end of which is fixed in the damping base by injection molding polyurethane, and the elastic part of the shock absorber made in the form of at least three leaf springs facing their convex part away from the axis of the rod, on which there is a threaded section with a small pitch for attaching the clamping element that sleeve-type with grooves for fixing one end of the leaf spring, the other end of which is fixed to the base by injection-damping polyurethane.