EA004730B1 - Working chain of ballast cleaner - Google Patents

Abstract

A working chain of a ballast cleaner with cutters, including raking out members comprising a base, ears, lugs and supports, connecting links and pins, characterized in that said connecting link of the chain is designed as a flat oval ear-ring, said raking out member has such a length that the front part of one raking out element adjoins the rear part of previous member with minimum clearance of mobility ratio, and said support is designed as a rear crosspiece between the ears and positioned at the height of the connecting link, wherein the horizontal plane of the crosspiece and the plane extending through the edge of the front face are displaced relative to each other by the height to the tolerance value of the connecting links.

Description

Technical field

The invention relates to devices for repairing a railway track, specifically to chain working bodies of crushed stone cleaning machines, and is intended for use in the construction of movable joints of raking and connecting links of a scraper scraper chain.

State of the art

Many crushed stone cleaning machines with the same type of chain working bodies-KM-80 of Russian-Austrian production are known; KM-76 Austrian production; SCH-600, SCH-601 and SCHU-800 of Russian-Czech production; SCHOM-6B and SCHOM-6BM of Russian production; OT-400 and OT-800 Polish production.

These and similar crushed stone cleaning machines are designed for continuous cutting of crushed stone ballast from under the rail-sleeper grid, its submission for cleaning, followed by dosed laying of clean ballast back on the road.

Cutting and supply for cleaning is carried out by a chain working body, which works in specific, extremely difficult conditions directly in the rubble, abrading and stretching the elements of the chain.

All chain working bodies of machines are made with stops in the form of tides on a raking or connecting link, which are located in the zone of interaction with abrasive material. The eyes of the raking links are not developed in length, therefore, there are additional tides on the connecting links to cover the space between the links from material ingress.

The implementation of stops and tides on the outside of the links is not only not technologically advanced, but also leads to frequent punctures and wear of the stops due to the high load when working in an abrasive environment. A connecting link of a complex shape has less tensile strength (for an example, see the article Determining the Consumption of Spare Parts on KM-80 INC. Machines, Railway and Track Management, No. 6, 2000, pp. 13-17).

Known working body (ed. St. USSR 1647082, M class E 02E 3/08, publ. BI 17, 1991, prototype), including a chain with connecting bearing links and fingers. Additionally, brackets with cutter pads are installed on the fingers of the chain links. The ends of the platform abut against the edges of subsequent connecting links, ensuring a stable position of the chain during operation.

The disadvantage of the design is that the brackets are made in the form of a separate structure in addition to the links of the chain, and the stops developed along the width of the sites are in the same horizontal plane. Finding two stops at the same level horizontally and their large width can lead to jamming of the chain and breaking out of the fingers.

Object of the invention

The objective of the invention is to simplify the design of the chain working body of the gravel cleaning machine and increase its resource.

SUMMARY OF THE INVENTION

In accordance with the stated problem, the invention is aimed at, it is to create a working chain of a rubble-cleaning machine, in which the emphasis is removed from the zone of interaction with abrasive material, and the connecting link is simplified and protected from direct contact with the scraped abrasive material. In addition, a smooth flat link works better in tension than a figured one.

The solution to this problem is provided due to the fact that in the working chain of the rubble-cleaning machine, including raking links containing bases, eyes, paws and stops, connecting links and fingers, the connecting link is made in the form of a flat oval-shaped earring, the raking link is made in length such that that the front part of one raking link is adjacent to the rear of the previous link with a minimum gap of relative mobility, and the emphasis is made in the form of a rear bridge between the eyes and is located at heights e of the connecting link, while the horizontal plane of the bridge and the plane passing through the edge of the front edge of the base are shifted in height relative to each other by the amount of tolerance on the mobility of the links.

Disclosure of invention

The invention is illustrated in FIG. 1-2, where FIG. 1 represents a working chain of a rubble-cleaning machine in a plan view (with a partial section);

FIG. 2 represents a section of the working chain along the hinge.

The working chain of the gravel cleaning machine (Fig. 1) includes rake links 1, connecting links 2, fingers 3, cutters 4. The rake link 1 contains a base 5, eyes 6 and legs 7. The eyes 6 of the rake link 1 are made such that the front part A of one the rake link is adjacent to the rear part B of the previous link with a minimum clearance “a” of relative mobility. The emphasis 8 is a jumper between the eyes in the rear of the base 5 and is located at the height of the connecting link. The horizontal plane of the stop and the plane passing through the front face 9 of the base are shifted in height relative to each other by the amount of tolerance "b" on the movable links. The connecting link is a smooth oval earring located inside the eyes of the raking link.

The working circuit of the rubble machine operates as follows. After placing the chain in the gravel under the rails, the chain is driven by the corresponding drive. In this case, the cutters 4 of each raking link cut gravel ballast under the rail-sleeper and behind the ends of the sleepers.

Cut ballast is placed between the legs 7 of the raking device and transported by the working chain for cleaning.

When the working chain moves, its raking and connecting links, pivotally connected in a closed loop, change their mutual position. In the design described above, the mobility of the links is limited to the extent necessary by the stop 8 and the edge 9 of the base of the rake link. The emphasis removed inside the structure does not interact with abrasive material and works more reliably. The eyes of the rake link, blocking the connecting link, protect it from accelerated wear, and the connecting link itself acquires new properties - made, for example, from rolled steel, it withstands high tensile stresses.

Distinctive design features make it possible to simplify production technology (simplified connecting link and stop design), simplify assembly, disassembly and replacement of component technology and increase the working chain life.

Industrial Applicability of the Invention

The proposed solution is feasible by conventional means well developed by industry. It has almost been implemented and tested in the repair of tracks on the Oktyabrskaya railway. Tests have shown the possibility of a marked increase in the resource of working circuits of the existing fleet of gravel cleaning machines.

Claims (1)

CLAIM The working chain of a rubble cleaning machine with cutters, including rake links containing base, eyelets, paws and stops, connecting links and fingers, characterized in that the chain link is made in the form of a flat oval earring, the rake link is made along the length such that the front part one raking link is adjacent to the back of the previous link with a minimum clearance of relative mobility, and the stop is made in the form of a rear jumper between the lugs and is located at the height of the connecting link, and this horizontal plane and webs plane passing through the edge of the front face of the base, offset in height relative to each other on the tolerance value on the mobile units.