SU816593A1

SU816593A1 - Rolling roll suport device

Info

Publication number: SU816593A1
Application number: SU792769191A
Authority: SU
Inventors: Виктор Петрович Бардин; Владимир Павлович Константинов; Александр Иванович Мартон; Евгений Александрович Петров
Priority date: 1979-05-23
Filing date: 1979-05-23
Publication date: 1981-03-31

Description

(54) ОПОРНОЕ УСТРОЙСТВО ПРОКАТНОГО ВАЛКА(54) SUPPORTING ROLLED ROLLS

1one

Изобретение относитс к прокатному производству в частности к опорным устройствам валков рабочих клетей прокатных стаНов.This invention relates to rolling production, in particular, to support devices for rolls of work stands of rolling mills.

Известно опорное устройство дл прокатных валков, содержащее подушку с монтированными в нее подшипниками качени , смазываемыми посредством масл ного тумана (1. ,A rolling mill support device is known, comprising a pad with rolling bearings mounted therein lubricated by oil mist (1.,

Недостатком устройства вл етс низка работоспособность, вызванна утечками смазки вследствие потери герметичности уплотнительных элементов опоры.The disadvantage of the device is low operability, caused by leakage of lubricant due to loss of tightness of the sealing elements of the bearing.

Известно опорное устройство прокатного валка, в котором бурт подушки выполнен в виде уплотненного по наружному диаметру кольца, насаженного с гарантированным зазором на шейку валка между подушкой и втулкой и уравновешенного относительно подушки 2.Known supporting device of the rolling roll, in which the shoulder of the pillow is made in the form of a ring compacted over the outer diameter, fitted with a guaranteed gap on the neck of the roll between the pillow and the sleeve and balanced relative to the pillow 2.

Однако вследствие увеличени гарантированного зазора во врем эксплуатации происходит потер герметичности опоры. Это приводит к преждевременному выходу подшипника из стро из-за попадани эмульсии.However, due to an increase in the guaranteed clearance during operation, a loss of tightness of the support occurs. This leads to premature bearing failure due to emulsion ingestion.

Цель изобретени - увеличение срока службы опорного устройства, котора достигаетс за счет повышени герметизации уплотнительных элементов опоры.The purpose of the invention is to increase the service life of the support device, which is achieved by increasing the sealing of the sealing elements of the support.

Поставленна цель обеспечиваетс тем, что на втулке со стороны кольца выполнен бурт, на который оперто кольцо, причем на поверхности кольца, взаимодействующей с буртом втулки, симметрично продольной оси, установлены вкладыши из твердосплавного материала, а на участке между вкладышами нанесен микрорельеф.This goal is ensured by the fact that a collar is made on the sleeve from the ring side, on which the ring is supported, on the surface of the ring interacting with the collar of the sleeve symmetrically to the longitudinal axis, carbide inserts are installed and a microrelief is applied in the area between the liners.

На фиг. 1 представлено опорное устройство , поперечный разрез; на фиг. 2 - разрез А-А на фиг. 1.FIG. 1 shows the support device, a cross-section; in fig. 2 shows section A-A in FIG. one.

Claims

The proposed device consists of a pillow 1 with a collar, bearings 2 installed in it with a lubrication system in the form of oil mist, including supply channels 3, capacitors 4, seals 5, and also a sleeve 6 mounted on the neck of the roll 7 and ring 8 placed between the collar of the front part 1 and the sleeve 6, the sleeve 6 being made a shoulder to which the ring 8 is compressed using springs 9, and on the surface of the ring 8 in contact with the shoulder of the sleeve 6, carbide inserts are embedded in at least three sections 10, between which the microrelief is applied f in videoconcentric circles. The presence of the microrelief allows developing the contact surface area, thereby stabilizing the conditions of the hydrodynamic friction mode. The proposed device works as follows. When rotating the mill roll 7 in. An oil mist is fed through the channels 3 through the channels 3 to lubricate the cavity. When passing through the condenser 4, oil mist particles condense by about 90% and deposit on the friction surface. The remaining 10% of the oil mist and the oil cleared from the air exit between the collar of the sleeve 6 and the end of the spring ring 8, preventing the penetration of the emulsion and contaminants into the bearing cavity. The residual oil mist is deposited on the friction surface and the purified air escapes into the atmosphere. The thickness of the oil film between the rubbing surfaces of the ring 8 and the sleeve 6 is one of the main factors determining the process of friction and their wear. For this purpose, a regular microrelief is applied at the end of the ring 8. With an increase in the microrelief area, the oil absorption of rubbing surfaces increases, i.e. the conditions of friction improve. The use of carbide inserts and microrelief according to experimental data allows to expand the limits of the specific contact force to press the ring 8 to the collar of the bushing and to reduce the coefficient of friction between them to 0.03, as the hydrodynamic mode of friction is established between the ring and the bushing, which results operating mode support roll mill. . Claim supporting device of a rolling roll comprising a collar with a collar, bearings with a lubrication system in the form of oil mist, a sleeve and a ring placed between the collet of the pillow and the sleeve, characterized in that, in order to increase the timing, the use of liners on the sleeve with the side of the ring is made of a collar on which the ring is operated, and on the surface of the ring interacting with the collar. bushings, symmetrically to the longitudinal axis, inserts made of carbide material are installed. and in the areas between the inserts applied micro-relief. Sources of information taken into account in the examination 1.Toder I. A. Design of roll supports of rolling mills and current trends in their use in the USSR and abroad. M., NIIinformt zhmshch, 1974, No. 12, p. eight.

2. USSR author's certificate number 547244, cl. B 21 B 31/02, 1976.