SU708133A1 - Chain pusher - Google Patents

Description

(54) CHAIN PUSHER

The invention relates to devices for loading and unloading heating furnaces and can be used in factories of the engineering industry.

A known chain pusher for moving pallets with articles, comprising a drive, a drive sprocket and a chain, the links of which have the shape of a toothed rack connected on hinges 1.

The disadvantage of this design is the de (} and) reameration of the rack teeth from thermal loads) K, the absence of limiting rollers, which creates additional efforts to overcome the friction forces of the chain links on the laying of the furnace and the wear of the gear racks.

Also known is a chain pusher for moving a pallet with articles in a furnace, consisting of an actuator, an asterisk, a plate chain consisting of links interconnected by rollers, and a pusher mounted on one of the ends of the chain 2.

The disadvantages of the known device are the large loads on the chain link and the intermittent movement of the pushers.

The purpose of the invention is to reduce the load on the chain and ensure smooth movement of the pusher by providing an optimum pressure angle of engagement.

The goal is achieved by the fact that each chain link is provided with additional and restrictive rollers, with additional rollers dividing the chain pitch into equal parts.

FIG. 1 shows a pusher, a general view; in fig. 2 — node I of FIG. 1 (chain link); FIG. 3 - section A-A of FIG. 2; in fig. 4 section bb FIG. 2

Claims (2)

The chain pusher consists of a drive 1, a power box 2 in which the star 3 is located and the clamps 4 for adjusting the position of the groove chain in the radial direction, and the plate chain 5. The lamellar 5 consists of links 6 having two main rollers 7, On axis x8 of which the pitch 6 turns, and four additional rollers 9. Each link 6 also has a limiting roller 10. At the end of the chain is fixed a puller 11. The ratio of the length of the link 6 to the pitch of the chain rollers should not be less than 2: 1, and in this case, to get more smooth Oh and reliable operation of the chain pusher, this ratio is 5: 1. The installation of an additional four rollers in each link ensures an optimal pressure angle, in this case equal to 29 ° 15, which corresponds to the operation of the chain pusher of this CONS1RUCTION in the safety zone. Chain pusher works as follows. From the drive i, the sprocket 3, rotating, moves the plate chain 5 meshing with it. The chain 5 makes a reciprocating post-movement in the slots of the claddsy. When moving chain 5 into the working area of the drive: pallets with parts are pushed from position to position of the pusher 11. When the pusher returns, chain 5 enters the power box 2. The proposed design increases the reliability of the automatic linley bushing for heat treatment of parts, allowing It minimizes emergency and repair downtime and contributes to improving the conditions of the Oili. Claims of the Invention A chain pusher for moving pallets with articles in a furnace consisting of a drive, sprocket, plastic target consisting of links interconnected by rollers and a pusher fixed on one of the chains of the chain, characterized in that; in order to reduce the load on the chain and ensure smooth movement of the pusher by ensuring an optimal angle of engagement, each chain link is provided with additional rollers and a restricting roller, with additional rollers sharing the chain pitch w equal part. Sources of information (|) for B1 in the examination at examination 1. US patent N 2251308, cl. 254-95., 1941. 2. USSR author's certificate No. 307112, cl. F 27 D 3/00, 1969. / 6-s L / ft - / 1 Rne 4 th / g