SU845894A1

SU845894A1 - Mechanism for securing stands in blooming mill cartridge

Info

Publication number: SU845894A1
Application number: SU792832639A
Authority: SU
Inventors: Вадим Анатольевич Вердеревский; Петр Михайлович Финагин; Олег Иванович Ершов; Владимир Петрович Бедняков; Анатолий Александрович Сильченко
Original assignee: Предприятие П/Я В-2869; Предприятие П/Я А-7697
Priority date: 1979-10-26
Filing date: 1979-10-26
Publication date: 1981-07-15

Description

С54) МЕХАНИЗМ КРЕПЛЕНИЯ КЛЕТЕЙ В КАССЕТЕ РЕДУКЦИОННОГО СТАНАC54) MECHANISM OF FASTENING OF CELLS IN THE CASSETTE OF A REDUCTION MILL

1one

Изобретение относитс к металлургическому оборудованию, в частности к конструкции многоклетевых станов непрерывной прокатки и редуцировани сортового металла и труб, и может быть использовано дл непрерывной прокатки труб, редуцировани труб, прокатки прутков, проволоки и др.The invention relates to metallurgical equipment, in particular, to the construction of multicellled mills for continuous rolling and reduction of section metal and pipes, and can be used for continuous pipe rolling, pipe reduction, rolling rods, wire, etc.

Известен многоклетевой стан непрерывной прокатки, имеющий рабочие клети и сплошной или секционированный постамент с постел ми под рабочие клети, в котором фиксаци клетей по оси прокатки осуществл етс самим постаментом, а зажим - откидной траверсой, снабженной отдельными на каждую клеть гидроцилиндрами 1.A multi-stand continuous rolling mill is known, having working stands and a continuous or sectioned pedestal with beds for working stands, in which the stands are fixed along the rolling axis by the pedestal itself, and the clamp is equipped with a folding traverse equipped with separate cylinders for each stand.

Недостатки этой конструкции стана заключаютс в том, что верхн откидна траверса затрудн ет подход и обслуживание клетей, а также не дает возможности производить перевалку клетей секци ми. Кроме того, наличие большого количества гидроцилиндров и систем их управлени усложн ет конструкцию стана.The drawbacks of this construction of the mill are that the upper folding traverse makes it difficult to approach and maintain the stands, and also does not allow for the transshipment of the stands in sections. In addition, the presence of a large number of hydraulic cylinders and their control systems complicates the design of the mill.

Наиболее близким по технической сущности к изобретению вл етс механизм креплени , включающий две соедин ющие переднюю и заднюю стенки кассеты щтанги.The closest in technical essence to the invention is a fastening mechanism comprising two connecting shtangi connecting front and rear walls of the cassette.

расположенные параллельно и симметри parallel and symmetry

шо общую дл них поперечину, пружину и идроцилиндр дл каждой щтанги, причем с Shaw common to them crossmember, spring and cylinder for each shtangi, and with

ружины и гидроцилиндры смонтировань rifles and hydraulic cylinders

с внешней стороны стенок кассеты 2. Недостаток известной конструкцииon the outside of the walls of the cassette 2. A disadvantage of the known construction

заключаетс в том, что размещение пру ин и гидроцилиндров с внешней стороны i ассеты (вдоль оси прокатки) приводит к веотличению межклетевого рассто ни и ее ветственно к увеличению габаритов стг на, выусложнению операции перевалки и по решенным отходам металла при штучном дуцировании труб.The fact is that the placement of the spring and hydraulic cylinders on the outside of the i assembly (along the rolling axis) leads to a distinction between interstandal distance and its responsibility to increase the dimensions of the vessel, to increase the handling operation and to solve the metal waste during piece dosing of pipes.

Цель изобретени - сокраш,ение м секционных промежутков стана и тем мым уменьшение обрезки концов труб.The purpose of the invention is to shorten the mill sections of the mill and thereby reduce the cutting of pipe ends.

15 Поставленна цель достигаетс тем, 15 The goal is achieved by

что в механизме креплени клетей в кас ете :оередукционного стана, включающем две асдин ющие переднюю и заднюю стенки ьно сеты штанги, расположенные паралле; и симметрично, общую дл них попереч ну, that in the mechanism of fastening the stands in a cassette: an reduction mill, including two asdinning front and rear walls, a bar network, arranged parallelly; and symmetrically, common to them across

Claims

20 a spring and a hydraulic cylinder for each shaft, each rod is provided with a sleeve, attached with a gap and attached from one side to the crossbar, in the annular gap, between the protruding rod and the end wall of the sleeve, the spring of the cylinder is hollow , is put on the barbell and pressed from the outside to the end wall of the sleeve, and the case is installed permanently. This constructive implementation of the mechanism significantly reduces the distance between the sections of the mill due to the sequential installation of the hydraulic cylinder and the spring on the rod, which allows the sections to be located close to each other. FIG. 1 shows the proposed mechanism, the plan; in fig. 2 shows section A-A in FIG. 1. Each cassette of a multicell mill, having front 1 and rear 2 walls and working stands 3 (at least two) with drives 4, is equipped with a mechanism for fastening the stands in the cassette in the form of two, arranged parallel and symmetrically to the beam 5, their common cross member 6, for each shtangi sleeve 7, installed with a gap and attached on one side to the crossbar, a spring 8 located in the annular gap between the protrusion 9 made on the shtang and the end wall 10 of the sleeve, and the hydraulic cylinder, the housing 11 of which is installed stationary, and the piston 12 release Flax hollow, worn on the rod and pressed against the end wall of the sleeve outside. When the mechanism is placed on the mill, the hydraulic cylinder body is attached to the wall, for example, the rear one, of each cassette through the support sleeve and the rods are secured against axial movement in one wall of the cassette. The device works as follows. During rolling, stand 3 is pressed to the rear wall 2 of the cassette by cross member 6, which is under the action of two springs 8, transmitting force through sleeves 7. Thus, the working stands are fixed from possible movements, as well as from the perception of significant axial forces acting on rolling with tension. If it is necessary to replace the stands with new ones, hydraulic fluid is supplied to the hydraulic cylinders, which moves the hollow pistons of the 12 hydraulic cylinders away from the fixed rear wall 2 of the cartridge. The hollow pistons moving, with their ends, push the bushings 7 and the cross member 6, compressing the spring 8. As a result of the movement, the distance (along the rolling axis) between the cross member and the wall increases, and the stands can be removed from the cassette. After installation of new stands, the fluid pressure in the hydraulic cylinders is relieved, and under the action of springs 8 through sleeves 7 interacting with the ends of the hollow pistons 12, they move in the direction towards the fixed rear wall. At the same time, the cross member 6 is also moved, pressing the work stand to the fixed rear wall of the cassette. The cassettes with stands constitute the sections that make up the multi-stand mill. The proposed mechanism allows the cassettes to be closely spaced to each other and to reduce the intersection distances of the multi-cage continuous rolling mill, and by reducing the distance, to reduce the length of the thickened ends, which are further cut. Claims The mechanism for fixing the stands in the cassette of the reduction mill includes two connecting front and rear walls of the cartridge rods arranged parallel and symmetrically, a common cross member for them, a spring and a hydraulic cylinder for each rod, characterized in that, thereby reducing the trimming of pipe ends, each rod is provided with a sleeve installed with a gap and attached on one side to the crossbar, in an annular gap, between the protrusion made on the rod and the front th wall of the sleeve, placed the spring, while the piston of the hydraulic cylinder is hollow, mounted on the rod and pressed outside to the end wall of the sleeve, and the housing is installed stationary. Sources of information taken into account during the examination 1. V. P. Anisiforov et al. Reduction mills. M., Metallurgists, 1971, p. 177.

2. USSR author's certificate No. 168239, cl. B 21 B 17/14, 1962.