SU1217468A1 - Aromour lining for tumbling barrel - Google Patents

Description

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The invention relates to the construction of armored drum mills consisting of long products, and can be applied in the metallurgical and other industries.

The purpose of the invention is to increase the service life and quality of crushing by uniformly wearing the surface of the head.

The drawing schematically shows the drumming of the drum mill, end view.

The armored vehicle is made of elements of 1 long products and mountings 2. The upper working face 3 of the element 1 of the grade podokat is made of a wavy shape, and the depth of the wave decreases from the maximum height of the element 1 k. To the attachment unit 2 and is 0.03-0.1 of the maximum height of the section rolled. The protrusions 4 and depressions 5 of the upper working face 3 are made along radii with increasing it from the ridge 6 of the long products 1 to the mount 2, i.e. g, g- The wave pitch t also increases from the ridge 6 of the bar element to the attachment point, i.e. ij i. The increase in wave and pitch radius is 1.5-3.0 times.

Increasing the radius and wave spacing is necessary to improve the quality of crushing by equalizing the size of the fractions of the upper and lower parts of the bar rolled element. An increase in the radius and pitch of the wave increases the contact area with the fine fractions of the crushing mass, as a result of which the specific pressures created between the armor lining and the crushable mass are reduced. Reducing the specific pressure leads to an increase in the service life of the armored vehicle and reduces the possibility of crushing the crushed mass, which improves the quality of crushing. J

The increase in the radius and pitch of the upper face of the bar rolled element is 1.5-3.0 times determined experimentally.

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VNIIPI Order 1029/10 Circulation 583 Subscription Branch ShSh Patent, Uzhgorod, ul. Project, 4

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2174682

An increase in the radius and pitch of the wave by less than 1.5 times does not give a perceptible catch of durability due to the small difference in the area of contact of the armor with the crushable mass at the top and attachment point.

An increase in the radius and pitch of the wave by more than 3.0 times leads to a decrease in the specific pressures to a value lower than that required for high-quality crushing and to increased wear.

During the rotation of the drum mill, different fractions of the crushed mass are located inside it. Smaller pieces penetrate closer to the base and mount, the larger ones remain on top. To crush larger pieces, large efforts are needed, which is created by reducing the contact area of the armored lighter with the crushable mass by performing when the varietal element of the wave of a small radius r is small. In order to crush the smaller fractions located at the base of the bar element and near the mount, the effort is required, which is achieved by increasing the contact area of the armored fire with the crushable mass by increasing the radius P (and wave pitch i from the crest of the bar to the mount. Thus, larger fractions are crushed by the upper part of the bar, creating large specific crushing forces, and smaller fractions are crushed by the lower part, creating less specific crushing forces, leads both to qualities povsh1eniyu crushing and to povsh1eniyu bronefuterovki life and reduce metal consumption.

Elements of long rolled products of the proposed form can be made on j of any large-size or rail-mill mill without additional costs,. on capital construction.

The economic efficiency of the proposed invention is achieved by increasing the service life of an armored vehicle by 3-5% while simultaneously increasing the quality of crushing.

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Claims (1)

BRONEFUTEROVKA mill drum comprising a cylindrical portion disposed on the housing of the mill lining elements made of rolled sortovo- ¹ having a head wave profile with radius depressions and protrusions with the depressions decreasing depth from the crest to the base member and the attachment points of h and T l and w This is due to the fact that, in order to increase the durability and quality of crushing by uniform wear of the head surface, the protrusions and depressions are made with increasing radius in the direction from the crest of the element to the attachment point, the wave step akzhe made to grow in the same HA _of the board. S ω