SU1484785A1 - Tensioning device for belt conveyer - Google Patents

Description

The invention relates to conveyor-. transportation, in particular, to main and local conveyors with tension-free tensioning devices. The goal is to increase the reliability of the start of the conveyor. The tensioning device includes tensioning and driving drums (B) 1, 13. Axis 2 B 1 is installed

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on supports 3 mounted on a movable trolley (PT) 4 of a wheel mechanism moving along guides 5. PT 4 has deflecting blocks 6 and a solenoid body 7. A movable rod 8 of a solenoid 7 is connected with an equalizing unit 10. Rope pulleys 17 are placed on shaft 12B 13, each of which has an activating mechanism built in. 18. If B 13 rotates, the belt 21 has insufficient tension, then tension control sensor 9 ensures that the mechanism 18 is turned on. The latter connects pulleys 17 to 12 B 13, and pulleys 17 begin to break Attach together with B 13 and wind the rope 19, which through the deflecting blocks 6 moves the PT 4 along the guides 5. Simultaneously moves and B 1. At the same time, the rope 19 through the equalization block 10 acts on the tension control sensor 9. Upon reaching the specified value of the tension of the tape 21, the sensor 9 turns off the enabling mechanisms 18. 1 Il.

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The invention relates to conveyor transport, in particular to the main and local conveyors with non-power tensioning devices. $

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The purpose of the invention is to increase the reliability of the start of the conveyor.

The drawing shows a belt tensioning device. ten

The tensioning device contains a tension drum 1, the axis 2 of which is mounted in supports 3, mounted on a movable trolley 4 of a wheel mechanism, having the ability to move along guides 5. On the same movable trolley 4, deflecting blocks 6 and a body of a solenoid 7 are mounted, a movable rod 8 through which the sensor 9 controls the tension of Leyta 20

associated with equalizing unit 10, the axis of which has the ability to move in the guides 11 mounted on the movable carriage 4.

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On the shaft 12 of the drive drum 13, mounted in supports · 14 and kinematically connected via gearboxes 15 with drive motors 16, cable pulleys 17 with built-in mechanism 30 of each 18, rope 19 from one cable pulley 17 located on the left side drive drum 13, passes through the deflecting blocks 6 and leveling unit 10 to the other ka — 35 natny pulley 17, located on the right side of the drive drum

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13. The axis of rotation of the latter, and hence of the cable pulleys 17, remains fixed in space, since the frame 20 of the drive station is stationary when the belt 21 moves.

The device works as follows.

When starting the conveyor, the electric motors 16, through the gearboxes 15, begin to rotate the drive drum 13. If the tension of the belt 21 is insufficient, the tension control sensor 9 gives a command to turn on the starting mechanism 18, made, for example, by electromagnetic. The engaging mechanism 18 connects the cable pulleys 17 with the shaft 12 of the driving drum 13 by mechanical or electromagnetic engagement, as a result of which the cable pulleys 17 begin to rotate together with the driving drum 13 and wind the rope 19, which through the deflecting rollers 6 moves the movable cart 4 of the wheel mechanism along the guides 5. Together with the carriage 4, the tension drum 1 is moved, whose axis 2 is installed in the supports 3.

At the same time, the cable 19 through the equalizing unit 10 acts on the sensor 9 of the tension control. When the specified tension value of the tape 21 is reached, the sensor 9 gives a command to turn off the switching mechanisms 18, which simultaneously with the termination of the mechanical action

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or electromagnetic engagement fix cable pulleys 17 in a stationary state (fixation is performed by known methods and devices, such as a ratchet mechanism).

In the future, the tensioning device continues to operate in the steady-state movement of the conveyor from the sensor 9 to control the belt tension 21.

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When starting the conveyor, which has been in a disconnected state for quite a long time, situations are possible when at the first moment the drive drum 13 has 15 slippage relative to the belt 21. To eliminate this slippage, solenoid 7 is turned on before starting the conveyor and the equalizer moves through sensor 20 9 block 10 in the guide 11. As a result, creates a pre-tensioning force of the tape 21, sufficient for its coupling with the drive drum 13. ²⁵

After starting the conveyor, the solenoid 7 is turned off and the cable pulleys 17 start working with the switching on mechanisms 18 by means of the tension control sensor 9.

Claims (1)

Claim Belt conveyor tensioner, including a tension drum mounted in guides that can be moved by means of a wheel mechanism, a drive drum, cable pulleys connected by a rope through deflecting blocks, an equalizing block between the deflecting blocks and a mechanism connected to the belt tension monitoring sensor installed between the equalizing unit and the solenoid rod, characterized in that, in order to increase the reliability of the start of the conveyor, the cable pulleys and the switching mechanism mounted on the shaft of the drive drum, and the deflecting blocks and the body of the solenoid are mounted on the wheel mechanism for moving the tension drum.