RU2187407C2 - Vertical rope type machine for semicontinuous casting - Google Patents

Abstract

FIELD: foundry, namely casting of non-ferrous metals and alloys. SUBSTANCE: vertical rope type machine for semicontinuous casting includes drive unit, drums, ropes, platform with central suspension, guides and wheels. Wheels are mounted on balancers with counterweights that is why they may roll over obstacles displacing balancer with counterweight but not changing position of platform. EFFECT: elimination of misalignment and horizontal shifting of platform even if any obstacle is under wheel. 2 dwg

Description

 The invention relates to foundry of non-ferrous metals and alloys.

 Known vertical cable machine semi-continuous casting, containing the drive, the platform, the guides (see "Melting and casting of aluminum alloys", 2nd edition, edited by Dobatkina VI, M., Metallurgy, 1983, pp. 117-120) .

 A vertical semi-continuous casting cable machine is known, containing a drive, cables, a platform with a central suspension, four guides and rollers moving along them (see "Modern devices for casting and homogenization of aluminum alloys", analytical review edited by Andreeva AD, M ., VILS, 1981, p. 26, Fig. 13), prototype.

 A disadvantage of the known semi-continuous casting machines equipped with contact elements forming a rolling pair with the guides is the possibility of horizontal displacement of the platform from the technological axis of the casting machine and its skew in the event of any obstruction under the roller, which leads to their curvature during casting and marriage in excess of the curvature of the permissible values.

 The technical result is the elimination of the possibility of displacement of the platform from the technological axis of the casting machine in the horizontal direction and its skew when any obstacles get under the roller and reduce the rejection from curvature when casting ingots.

 This is achieved by the fact that the rollers, performing their main function - to keep the platform from horizontal displacement in normal operation, can roll over obstacles without shifting the platform in the horizontal direction.

 The claimed vertical cable semi-continuous casting machine contains common features with the prototype: drive, drums, cables, a platform with a central suspension, guides and rollers.

 New features: the machine contains balancers fixed on the platform, on which a roller is pivotally mounted on one shoulder, and a counterweight is rigidly fixed on the other shoulder. The rollers installed in this way have two degrees of mobility, they can be rotated together with the balancer at a certain angle around the axis of the balancer and rotate around their own axis, the counterweights through the balancer create the force of pressing the rollers against the guides, due to which the platform is kept from horizontal displacement in normal operation during move down or up.

 Figure 1 shows a vertical cable machine semi-continuous casting, side view. Figure 2 shows the same machine, a plan view.

 The vertical cable semi-continuous casting machine contains a drive 1, drums 2, cables 3, platform 4, guides 5, balancers 6, rollers 7, balances 8, adjusting screws 9.

 The vertical casting machine semi-continuous casting is as follows. When mounting the platform 4 in the guides 5, the rollers 7 are installed with the adjusting screws 9 without clearance with the guides 5. When the platform 4 is moving down (the main working stroke of the machine), the rollers 7, in contact with the guides 5, rotate around their axis along the platform. If an obstacle falls under the roller 7, it continues to rotate in the same direction, rolls over the obstacle, while turning the balancer 6 with the counterweight 8 around the fixed axis of swing of the balancer at a certain angle.

 The force arising from the rotation of the balancer 6 with the counterweight 8 when rolling the roller 7 through an obstacle is distributed to the opposite rollers and will not be enough to shift the platform in the horizontal direction or its skew. After rolling over the obstacle, the balancer 6 with the roller 7 under the action of the counterweight 8 is installed in its original position until it stops in the adjusting screw 9.

 When the platform 4 moves up (idle speed of the machine) and when an obstacle falls under the roller 7, the rolling process of the obstacle roller 7 is repeated, and the deviation of the balancer 6 will occur in the same direction as during the platform 4 down.

 Example.

 A vertical wire rope semi-continuous casting machine was tested after its manufacture and installation. The platform had its own weight of 5 tons, the rollers with a diameter of 200 mm with the help of adjusting screws were set without a gap with all four guides and installed three pieces in a row with a distance of 500 mm between the axles in height, the balances on the balance beam had a weight of 80 kg. A steel plate 10 × 10 mm in size, 120 mm long, which is an artificial obstacle, was intentionally fixed on the guides in the passage zone of the rollers. The platform using the drive was lowered and raised at a working speed of 150 mm / min at a distance of two meters several times. All rollers rolled over an artificial obstacle, while the platform did not have a bias or horizontal displacement. When the same obstacle was installed on existing vertical cable machines of semi-continuous casting, the platform had an offset by the thickness of the obstacle and skew, which, when casting ingots, would lead to curvature of the ingots and marriage. The tests were not conducted in the process of casting ingots, as when working with liquid metal and a large amount of cooling water, it is difficult to make measurements and defective ingots by curvature cannot be corrected.

 Subsequently, during the operation of this foundry machine, ingots cast using it had curvature (occurring for other reasons) within the tolerance, regardless of the presence of splashes on the guides, or small curvatures of the guides themselves, the rollers circled these curvatures as an obstacle without horizontal platform offsets.

Claims (1)

 Semi-continuous casting vertical cable machine, consisting of a drive of cables, drums, a platform with a central suspension, four guides and rollers moving along them, characterized in that each roller is mounted on a platform mounted on a horizontal axis, a balancer with a counterweight with the possibility of rolling through an obstacle, turning the balancer with a counterweight and returning to its original position.

Images