SU1527117A1 - Arrangement for winding up canvas - Google Patents

Abstract

The invention relates to devices for winding a lengthy material, in particular a conveyor belt with adjustable tension. The purpose of the invention is to increase the reliability of the device. The winding device comprises a frame 1 of a welded structure on a skid x with struts on which coil 2 and a variable speed drum with drive shaft 3 are located, connected by a sliding plate, to a coupling. The drum is made in the form of radial struts 6, inside of which are placed screws 7 with bevel gears at the ends and nuts 9 with brackets 10 for turns of the rope of a draft winch. Inside the drive shaft 3 there is a rod with a fixed wheel, which periodically engages with the gears of the screws. By turning the handwheel 8, you can engage the bevel gears, changing the diameter of the drum depending on the load, and also connect and disconnect the shafts, transferring the rotation to the roll. The rotation of the coil is blocked with a change in the diameter of the drum. When the diameter of the drum changes, if the nut stops at the extreme positions, the mechanical protection is triggered, the latch is raised, holding the flywheel, and the drum rotates with the rod. In this case, the winch must be stopped and turned on for reverse. The drum allows you to adjust the speed and force of the winding, change the torque, which is necessary for large coils weighing more than 10-15 tons. The device is universal transportable, simple in design and manufacture and can be used in the repair of belt conveyors of various industries. 8 il.

Description

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During the opening of the variator drum, the driven drum of the winch rotates rapidly, the rope leaves, and when the drum is reduced, the lead drum of the traction winch selects the slack of the rope 1 1.

At the required diameter, the winch is turned off, the rod 15 is removed by a flywheel 8, after having thrown off the pad 26 and released the lock nut 27, the conical wheel and gears 16 and 17 are disconnected.

When the diameter changes, when the resistance increases sharply, for example, when the nut 9 of the screw 7 is pressed into the bearing 18, mechanical protection is activated when the gears 17 stop and the central wheel 16 rotates with the rod 15 and the flywheel 8, which raises the lash; her go through the spokes of the flywheel. At the same time, the winch must be switched to reverse. Electrical protection is also possible.

After adjusting the drum, I combine the slots of the core of the coil 2 and the drive shaft 3 and connect them with the plate 4 of the coupling using a flywheel 8. The working tension of the cable 11 of the drive traction winch is made and turn on winding. After winding 15-20 turns, the diameter of the drum decreases, increasing speed, in proportion to the decrease in resistance. Reducing the diameter of the drum to the optimum, wind the entire coil, trying to fasten it to the crane hook and load it onto the transport.

With a sharp increase in the resistance of the conveyor belt during winding, for example, when it is stuck, the rope 11 slips on the brackets 10 of the drum. The winch should be stopped at this time, the cause of the jamming should be eliminated or the diameter of the drum should be increased.

During the winding time, the diameter of the drum varies stepwise several times depending on the resistance. The unwinding of the roll is performed in reverse order with a decrease in the diameter of the drum as the load decreases. The rotation of the drum is carried out from the drive plate chain, in which the linear velocity pulses repeatedly for ol

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a turn that shakes the tape, releases it from the hooks and promotes winding. Rotation to the drum is transmitted by friction from a rope having a substantially constant linear speed.

When the direction of rotation changes, the traction winch drum changes its function; the master becomes the slave and the slave becomes the master. In any mode, the driven drum of the winch must be braked.

Contrast stripes are applied to the variator drum stands for visual inspection of the diameter. The operator working on the device must comply with elementary safety measures, do not touch the flywheel when working winch. A device with or without a bobbin can be transported from one workshop to another using a tractor.

The advantage of the proposed device is that with a two-drum winch having a constant speed and effort of the rope, it is possible to obtain adjustable speeds, forces and torques on the shaft, which is necessary when winding large coils.

The proposed device is simple in design and manufacturing and can be used in workshops related to repair of belt conveyors.

Adjustable speed accelerates the winding, allows you to keep the optimum mode with a uniform laying, increase the average speed during winding and unwinding, as well as increase productivity.

Claims (1)

Invention Formula A device for winding a web, comprising a coil mounted on a drive shaft, an angular speed control mechanism of a coil having a variator, and a coupling, characterized in that, in order to ensure reliability in operation, the variator is made in the form of a drum whose flanges are formed by radial and pairwise parallel hollow racks with screws installed in the racks of one of the flanges, and the core is formed by brackets with nuts mounted on the screws, while the drum shaft is hollow and has a conical gear rod for interno-conical wheel located inside, and the screws are provided with an action with a conical wheel of the rod. viewA 12 eleven FIG. 2 Sh 13 wuz.ff IN 3 gb eleven 15 Fig l FIG. eight