RU2357861C1 - Method for reinforcement of wheels with elastic deformable spokes and die mold for production of wheels - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: stated group of inventions is related to the field of transport machine building, in particular to production of wheels from elastic polymer composite materials. Technical result is achieved in method for reinforcement of wheels with elastic deformable spokes. Method consists in the fact that metal threads are preliminarily installed in mold for production of wheel from polymer composite material by casting method. At that chord threads arranged concentrically to internal and external rims of produced wheel are fixed relative to concentric surfaces of die mold by polymer spacing collars. Radial threads of chord that connect rims and elastic spokes of wheel are pulled through openings inn die mold and stretched with the help of screw-nut pair.

EFFECT: increased quality of reinforcement of wheels made of polymer composite materials.

3 cl, 4 dwg

Description

The invention relates to the field of transport engineering, in particular to the production of wheels from elastic polymer composite materials.

Currently, wheels with elastic deformable spokes are made of flexible polyurethane by injection molding.

Wheel designs are known, the inner and outer rims of which are interconnected by elastic spokes made of polymer composite materials [1] and reinforced with fiberglass yarns [1, 2]. Wheel designs with elastic deformable spokes, which are reinforced with metal threads, are also known.

The installation of cords is a certain complexity and should ensure uniform distribution of mass and radial stiffness of the wheel during rolling.

The technical result consists in improving the quality of the reinforcement of wheels made of polymer composite materials.

The technical result is achieved by the fact that in the manufacture of a wheel from a polymer composite material by injection molding, a cord of several rows of metal threads is pre-installed in the mold, one of which is arranged concentrically to the inner and outer rims of the manufactured wheel and fixed relative to the concentric surfaces of the mold by polymer spacers and others are pulled through holes in the mold and pulled in the radial direction using a special mechanism.

The invention is illustrated by drawings.

Figure 1 shows the relative position of the cord threads in the mold for the manufacture of vehicle wheels; figure 2 - methods for attaching cord threads; figure 3 presents the mechanism of tension of the threads.

In the manufacture of casting wheels, a mold is used, which consists of the outer and inner rings 1 and 6, end caps, and also jumpers 5 to form the surfaces of the elastic spokes, the outer cylindrical surface of the inner and inner cylindrical surfaces of the outer rims of the wheel.

The outer and inner rings 1 and 6 have several rows of through holes through which metal cord 3 is pulled in a radial direction, increasing the reliability and strength of the connection of the elastic spokes and rims of the manufactured wheel. At the ends of the metal threads 3 there are loops with which they are attached to the fingers 8 and 14. The thus-installed threads 3 are pulled in the radial direction using a mechanism that is a screw-nut power pair. The finger 14 with one of the fixed ends of the cord thread 3 is inserted into the screw-plug of the tensioning mechanism 12. By rotating the nut 13, the screw-plug 12 is moved relative to the guide body 11 and the metal cord of the cord 3 is tensioned in the radial direction.

In addition, prior to installation on the radial threads 3 put on the distance sleeve 7 of an elastic polymer composite material, which, like the cord threads, have on the surfaces of the notches. Through the transverse through holes of the bushings 7, the metal threads of the cord 2 are pulled and fixed concentrically to the cylindrical surfaces of the mold parts.

In the second embodiment of the invention, in order to ensure uniform radial rigidity during rolling of the wheel, elastic metal or polymer tapes 10 of variable thickness are set concentrically to the cylindrical surfaces of its parts. In this case, the installation of the remote polymer bushings 7 and the metal filaments of the cord 3 is made after the installation of elastic bands.

For the convenience of extracting the finished wheel, the outer and inner rings of the mold can be made compound.

Information sources

1. The invention of the wheel / Mikhail Vasiliev / Motor. - 2005 - April.

2. Patent of the Russian Federation No. 2180290, IPC ВВВ 9/04. Wheel of a vehicle of increased elasticity A.A. Yenayev, V.V. Mazur. - No. 2000111344/28. Declared May 6, 2000. Publ. 03/10/2002. Bull. Number 7.

3. Patent of the Russian Federation No. 2228273, IPC B60V 9/04. Wheel with internal suspension of an off-road vehicle A.A. Yenayev, V.V. Mazur. - No. 2002113483/11. Declared May 23, 2002. Publ. 01/27/2004. Bull. Number 3.

Claims (3)

1. The method of reinforcing wheels with elastic deformable spokes, which consists in the fact that metal threads are pre-installed in the mold for manufacturing a wheel from a polymer composite material by casting, characterized in that the cord threads located concentrically to the inner and outer rims of the manufactured wheel are fixed relative to concentric the surfaces of the mold with polymer spacer bushings, and the radial cord threads connecting the rims and the elastic spokes of the wheel are pulled through the holes in the mold and tighten using a pair of screw-nut. 2. A method of reinforcing wheels with elastic deformable spokes, namely, that elastic metal or polymer tapes and metal threads are pre-installed in a mold for manufacturing a wheel from an elastic polymer composite material by casting, characterized in that the elastic tapes are made to ensure rolling uniformity the wheels are variable in thickness and located concentrically to the inner and outer rims of the manufactured wheel, they are fixed relative to the concentric surfaces the molds with polymer spacers, and the cord threads connecting the rims and the elastic spokes of the wheel are pulled through the holes in the mold and pulled in the radial direction using a screw-nut pair. 3. A mold for making wheels with elastic deformable spokes according to claim 1 or 2, made detachable, comprising end caps, internal jumpers, inner and outer rings, characterized in that the inner and outer rings have through radial holes for pulling the cord, and also contains devices designed for tensioning in the radial direction of the cord and consisting of a pair of screw-nut and guide elements.

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