SU1761328A1 - Device for braking rolling on cold-air unit - Google Patents

Abstract

Usage: mainly in rolling mills with refrigerators with valve dumpers. The essence of the invention lies in the fact that the braking device is made in the form of rocker arm 3 hinged on rack 4 with hinged holder 5 with shoe 6 at one end thereof. The end of the second shoulder is spring-loaded from below on the vertical support 8. Vertically adjustable along the length of the pillars 1 ga 9 installed with the possibility of lifting from the valve actuator 1 ,. The rod is placed from the stand axis in the direction of the holder at a distance equal to 0.2-0.5 length from the stand axis to the holder attachment axis. The proposed design makes it possible for the braking device to apply a force from above on the rolling stock on the valve and to freely drop the rolling off of the lifting valves on the straightening chute 2 at the end of the braking process. 2 Il. AND

Description

The invention relates to rolling production and can be used on rolling mills having refrigerators with valve dumpers.

A device for braking a rental on a refrigerator is known, which includes lifting valves located along the refrigerator, installed parallel to the valves, stationary, straightening troughs and a device for applying additional braking force made in the form of electromagnets embedded in the lift-.

permanent valves and permanent magnets embedded in stationary straightening troughs.

The disadvantages of this device are: the complex electrical circuit of the device and its control; large additional power consumption for powering the device; the use of electricity on valves operating at high temperatures is unsafe under safety conditions; This device is not applicable for braking steel with a temperature above 750 C.

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It is also known a device for braking rolling on refrigerators of high-quality rolling mills, in which a shoe moving along the radius around the shaft is applied, rolling under the action of the weight to the lifting valve, and when the valve reaches the upper position, it releases the rolling when installed on t ge adjustable stop. This device is closest to the proposed.

The disadvantages of this device are that the efforts to press the car to the valve are not adjustable, therefore it is difficult to achieve a certain stopping distance to the car; the distance between the rolling stock and the shoe is not regulated, therefore, the start of braking is not regulated.

The aim of the invention is to increase the reliability of

This goal is achieved by means of a device for braking the car on the refrigerator, including lift valves with a drive, installed parallel to the rectifier, chutes and driving braking device for applying from above the force to the car on the valve, which is made in the form of a rocker arm hinged on the rack. the shoulder of which is hingedly placed holder (with a shoe, and the end of the second shoulder is spring-loaded from the bottom on a vertical support parallel to the axis of the stand and a vertical bar adjustable along the length, located from the axis of the rack in the direction of the holder at a distance equal to 0.2-0.5 length from the axis of the rack to the axis of attachment of the holder, with the possibility of lifting from the valve actuator.

Fig. 1 shows a device for braking a car in a refrigerator; figure 2 is the same, view along arrow A in figure 1.

The device for braking the car on the refrigerator consists of lifting valves 1 with a drive installed parallel to the straightening chutes 2 and a driving brake device for applying a force to the car from above, which includes the rocker arm 3, hinged on the rack 4. At the end of the single arm of the rocker arms the holder 5 with a shoe 6 is placed. The end of the second 61328

the rocking arm of the yoke is spring-loaded with a spring 7 on a vertical support 8. Parallel from the stand axis k to the side of the holder 5 at a distance of 0.2-0.5 lengths from the stand axis to the axis; the holder mount (t) is mounted, adjustable along the length of the rod 9, which can be lifted from the valve actuator, for example, by means of a support bracket 10 performed on the lifting arm 11 of the rod 12. The nuts 13 and 1 adjust the shoe to the rental 15. Rod 9 goes through

15 a guide bushing 16 attached to a rack. The length of the rod is adjusted by the fork 17 and the nut 18, depending on the size of the rolled stock and the need to raise the shoe.

20 ka before dumping rolled products from the lift valve to the straightening chute. Rake 19 sets in motion the lever 11.

Before the start of rolling, the size of the intended rolling stock is adjusted and the shoe 6 is pressed against the rental 15 by means of a nut 13 and a nut 14. A nut 13 raises or lowers the shoulder from the stand 4 to the vertical support 8 (H) of the rocker arms 3 and lowers or

30 raise the shoulder from the stand 1 to the holder 5 (h), which achieves the contact of the shoe 6 of the rental 15 located on the lift valve, and adjusts the compression of the spring 7 with a nut and through

, rocker 3 holder 5, shoe 6

provide the necessary braking force of rolled 15.

Lift holder 5 with shoe 6

up to the level of the flattening trough 2 with rental 15 is carried out with the help of rod 9, which is raised or lowered by nut t8, depending on the size of the rolled stock, while simultaneously adjusting the forcrop length of the end coming out of the forcopes until it touches the support bracket 10.

When receiving a signal from the photo sensor, the actuator is switched on in 1,

50, while the rail 19 begins to move horizontally, turning the lever 11 around its axis. Moving rolling 15, act | the lift valves start free braking on the valves,

with. Upon further upward movement of the lift valves 1, the rolling is supplied and pressed by the lift valves to the shoes 6, at this moment the pressing force begins to act.

When the lift valve does not reach the level of the upper edge of the straightening chute, 0.5 diameter or thickness of the billet remains, the support bracket 10 raises the rod 9, which raises the shoulder (h) of the rocker arm 3, the holder 5 and the shoe 6. Moreover, the shoe rises above the level of the straightening chute 2 s rental 15, and rental without any lift valve rolls onto the straightening chute. After that, the lift valve and shoe return to their original position.

The limit spacing of the rod 9 from the rack k is selected in a computational and experimental way equal to Os2-0.5 lengths from the axis of the rack to the axis of attachment of the holder (t). At a distance (t) of less than 0.2 of the shoulder h, the force on the rod and chrome increases dramatically due to the compression of the spring 7 and the lifting of the end of the shoulder with the shoe 6 increases dramatically. When the rod is located more than 0.5 h from the stand, the shoe will not be lifted 6 above the leveling gutter, which will prevent the discharge of rolled metal from the lift valve.

Technical and economic effect reached. It is due to simplicity of design, reliability during operation, and increased productivity.

Claims (1)

Invention Formula Device for braking rental on the refrigerator, including lift valves installed parallel to them straightening troughs and driving brakes for applying a force to the top from above In order to increase reliability, the brake device is made in the form of a rocker arm hinged on a rack, on the end of one arm of which the holder with a shoe is pivotally mounted, the end of the second arm of the rocker arm is spring-loaded from below on a vertical support parallel to the axis of the rack , in the direction of the holder, at a distance equal to 0.2-0.5 in length from the axis of the rack to the holder's mount, mounted is adjustable. lengthwise vertical bar mounted with the possibility of lifting from the valve actuator. eleven FIG. one Type A FIG. Z