SU784964A1 - Reciprocative-movement drive for cold rolling mill stand - Google Patents

Description

(54) DRIVE OF RETURN-AND-STEPS MOVEMENT OF CALES OF THE COLD COLOR MILL

one

The invention relates to the periodic rolling, mainly to the cold rolling of pipes.

The drive for the reciprocating movement of the stand of the cold rolling mill tube is known, which contains two parallel branches consisting of izsatuny and crank gears, which receive rotation through gearing from the electrodes. Igler 1. The length of the stand in such drives is determined by the Crankshaft radius, on which also depends connecting rod.

The productivity of the mills is determined by the number of double strokes of the working stand per minute. However, the increase in the rolling speed of the mill is accompanied by a sharp increase in the dynamic loads in the drive line, due to the reciprocating movement of large masses.

Dynamic loads from the cage are transmitted through the connecting rods, creating large bending moments and tensile forces in them, with the result that the connecting rods experience complex load-varying time.

One of the main factors that limit the number of double moves ow. / - l

The mode of operation of the drive. Therefore, the main disadvantage of this design is that the drive experiences in the process of working large dynamic loads during reciprocating movements of the cage and connecting rods.

In addition, the connecting rods make a complex swinging motion and their compaction is difficult.

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As a prototype, a drive of a reciprocating movement of a stand, containing drive cranks installed on either side of the stand, is used.

IS stationary gears with internal gears, interlocked with each of them and mounted on a crank satellite gear with an eccentric PALBTHEM, which is associated with

20 through the slider, movably installed in a vertical plane, on both sides of it, while the diameter of the pitch circle of the satellite gears is half the size of the gear rims and twice the radius of the eccentric pin 2.

The drawbacks of the drive are that two symmetrically located on both sides of the axis

 the drive due to their production and the first one, like all the drives, create an unfavorable variable moment in the horizontal plane, turning (stand and causing transversal and depressing processes, which negatively affects the conditions of the process.

Q: p6me then o, gie, due to the absence of the internalization of the internal cavity of the drive and the ingress of technological ctASi3iKvi, metal and other foreign bodies into it, the conditions of work deteriorate and the wear of the drive mechanism increases. This affects the reliability and durability of all the nodes of the drive mechanism. .G 1GG The purpose of the shadow image is to increase the reliability of the drive. ... „.-.“. ,,.

The goal is achieved by the fact that in the drive of reciprocating movement of the cage containing the Ustanovaya in the case, the drive carrier with a crank, a stationary wheel with an internal gear crown, which is attached to it and impaled on the wheel: the yellow cage gear with which the unit has an eccentric connected to the cage, communication of the ex. centric ftcllilSia With the cage is performed through the expanded rolling dtdfcDHT and compacted in the guides of the casing with a full pull, twice the length of the cage and the cage with a cage, and with The middle part is with the eccentric finger of the satellite.

A hinge connection with a cage and an eccentric finger gives a Shock: No: 7-st static static limit of the system and can use the accuracy class commonly used in the manufacture and assembly of such planetary mechanisms. The drive with a pull set on the Pro- axis. If TKHV eliminates the occurrence of a rotating, unwrapping moment in the horizontal plane, a negative impact on the quality of the finished pipes and the strength of the stand. This is necessary for -y) g; -gljgjjjjjj of the overturning moment, and the installation of t of gis seal on the water supply and output from the drive housing MexaiHHSMa improves lubrication condition

mechanism. ..,., one,, ...,.,..,

On: FIG. 1 Prevst Avlen Proposed; my drive; in fig. 2 - section A-A of FIG. eleven.

 The cages contain the drive module 2 located in the housing 1 from the drive 2 drove 3 with the crank 4, the wheel 5 with the internal gear permanently: the centrifugal gearing wheel hooked to it and the satellite gear 6 mounted on the HS RgiHB6iiiHn 8 (8 x 8 fingers 8 and 8 ha ha) of a hollow tube, once laid along the axis of the prokaty) UY7Gbtnena btn6sytoylno case kblSchevoy seals 9 at the entrance t

out of the case. The length of the cable is limited by the double stroke of the stand. The coupling with the cage 10 is made through the hinge 11. The eccentric pin 7 is connected to the middle part of the bearing by means of the bearing 12.

During operation of the device, rotation of the carrier 3 is transmitted from the engine. The satellite b due to gear spins with a fixed wheel 5 turns; you are relative to the carrier of the 3rd 11th turn, together with the carrier through 360 relative to its axis, eV also turned one turn. Finger 7 makes a reciprocating linear motion.

T he 8, connected with finger 7, makes a reciprocating movement and moves the rolling stand 10. The pipe in the process of the 1st stage passes through the hollow rod.

T hectare is located on the rolling axis and has a hinged connection with the cage, this excludes the overturning moment of the cage from the axial rolling force and the variable unfolding cage moment in the horizontal plane, the quality of the finished pipe and additionally loading cage nodes. Since the tractor is enclosed in the case of the PPoDonot mechanism, and the pipe passes inside the hollow rod, the technological mixture, metal and other foreign bodies cannot / can get into the internal cavity of the drive mechanism. This reduces the flow of energy and increases the service life of the G1 iybda, and the lubricant is used repeatedly in the circulating system.

Claims (2)

1. Koff 3. A. and others. Cold rolling tubes. M., Metallurgizdat, 1962 p. 62. 2. Author's certificate. USSR on application No. 2447441 / 22-02, cl. B 21 V 35/06, 1977 (prototype).