SU452383A1 - Rack refrigerator with adjustable pitch of rolling - Google Patents

Description

one

The invention relates to transport devices, in particular to chaladyln

rolling stock mills.

Transport devices with variable pitch of the rolled stock are known that allow the trajectory of movement of the movable rails to change from a circle to an ellipse. Their disadvantage is the complexity of the design, as well as the limited range of adjustment. Known device klyunak. uiee movable rails, vertical and horizontal, which are moved from different actuators: eccentric and piston, respectively.

The adjustment of the pitch of the hpocat transfer is performed in the indicated device by changing the stroke of the piston of the hydraulic cylinder and mixing the cycles of the vertical and horizontal movements. The drawback of the device is the presence of two drives and the difficulty of adjusting the stroke.

Also known is a refrigerator with a change in the step of placing the hire on rails. Spread rolling steps in this

the refrigerator is achieved by a combination of two simultaneously performed independent movements — a constant elevation of the rails and a variable horizontal movement. Vertical and horizontal movements are carried out from a single drive through separate kinematic chains. The height-constant lifting of the rails is carried out with the help of rotary knives and eccentrics. Variable horizontal movement of the rails is carried out by means of a rocker-lever mechanism with a variable radius of installation of the stone of the rocker. Change the installation radius stone scenes. manufactured by a separate drive.

The disadvantage of the refrigerator is difficulty due to the use of a lever mechanism with a separate drive for changing the radius of setting the stone in the wings, as well as the limited possibility of adjusting the horizontal stroke.

The aim of the invention is to simplify the design of the refrigerator due to the exclusion of the rocker mechanism with the drive, as well as to provide ppa adjustment of the rolling retracing step in a wide range (practically from zero to maximum). The movement of the rolled product in the proposed: refrigerator is carried out using movable rails, Moving relatively stationary, the vertical and horizontal movement of which is carried out from two crank shafts with a common one. driven through separate kinematic chains. The adjustment of the rolling step size is carried out in the proposed refrigerator by changing the mutual angular position of the crank. In this case, the shape of the movement trajectory of the moving rails relative to the fixed ones changes. FIG. 1 schematically shows a longitudinal section of the proposed rack cooler with an adjustable step for laying steel; Fig. 2 shows a kinematic scheme for driving horizontal and vertical movement of movable rails; in fig. 3 trajectories and the size of the steps of laying the rolled products depending on the change in the mutual angular position of the crank of the drive shafts. The refrigerator contains stationary rails 1 fixed on transverse rails 2. Between the stationary rails there are movable longitudinal rails 3 arranged in two sections arranged in series. Each section of the movable rails is scored on the transverse cross member 4, mounted on the longitudinal beams 5. & ZLCI 5 of both sections are interconnected by means of 6 and supported on rollers 7 n of the tilt rotary levers 8 connected to each other by 9. 9. One of the levers 8 is connected by means of a connecting rod 1O to a crank shaft 11, which controls the vertical movement of the movable rails. One of the sets of movable rails is connected by means of a pull rod 12 with a swinging lever 13, which with the aid of a connecting rod 14 is connected with a second crank shaft, 15, controlling the horizontal movement of the movable rails. Both crank shafts are connected to each other by a controlled clutch 16. At the end of each crank shaft, a drive 17 is installed. Both drives have the same parameters. In principle, it is possible to install only one dual-power hfivod on one of the crank; shafts. Sensors of the angle of rotation (selsyns) 18 transmitting readings to the receivers located on the control panel are connected to the output ends of the low-speed shafts of the drive reducers. The change in the size of the rolling step is carried out as follows. , With the help of the clutch crank; The shafts are disconnected. After that, one of the drives is turned on and the crankshaft shaft connected with it rotates relative to the other by the required angle. The mutual angular position of the shafts during adjustment is monitored by the receivers on the control panel. The magnitude of the relative rotation angle of the shafts depends on the size of the rolled stock and is set according to the well-developed program. After reaching the required angle with respect to the rotation of the shafts, the drive stops and the shafts are rigidly connected with a clutch. During operation of the refrigerator, both drives operate synchronously, with the crank shafts rigidly connected to each other and their mutual angular position remains fixed throughout the operation of the refrigerator. The step size can be smoothly varied from 0 ° to a maximum value, depending on the eccentricity of the crank shafts, chosen depending on the maximum cross-section of the car. The subject of the invention is a rack cooler with an adjustable rolling pitch containing fixed and movable rails with individual crank mechanisms and with a common drive, which is different from the fact that, for the purpose of smoothly adjusting the pitch of the stacking by changing the angular position of the curvos of the mechanisms, their shafts are connected among themselves through a controlled coupling coupling.

452363