Tensioning device with tension and gravity capable of being adjusted synchronously and on lower portion of elevator

Abstract

A tensioning device with tension and gravity capable of being adjusted synchronously and on the lower portion of an elevator comprises a counter weight mechanism (device) and a lever. A lever adjusting mechanism (device) is installed on an enclosure on the lower portion of the elevator and connected with one end of the lever, the other end of the lever is connected with the counter weight mechanism, the middle of the lever is connected with a lever rotation shaft mechanism (device) through a sliding supporting plate, and the lever rotation shaft mechanism is connected with a steering chain wheel assembly or a belt pulley assembly on the lower portion of the elevator. The lever adjusting mechanism is a nut lead screw mechanism. A left tensioning device with tension and gravity capable of being adjusted synchronously and on the lower portion of the elevator and a right tensioning device with tension and gravity capable of being adjusted synchronously and on the lower portion of the elevator are arranged on the lower portion of the elevator. The tensioning device is balanced in tension, effectively prevents the steering chain wheel assembly or the belt pulley assembly on the lower portion of the elevator from deviating from a chain or a belt, and is reliable in running.

Description

technical field [0001] The invention relates to a tensioning device for the lower part of a bulk material hoist, in particular to a tensioning device for a redirection device at the lower part of a bucket elevator. technical background [0002] The tensioning device is an indispensable part in the hoist. During the use of the chain bucket or belt bucket, the lifting chain or lifting belt will be deformed and elongated due to factors such as its own gravity, working tensile stress, friction and wear. As time goes on, the elongation of the hoisting chain or hoisting belt will continue to increase, which will inevitably lead to the phenomenon of chain pulley and hoisting chain, pulley and hoisting belt being disconnected or stripped, hanging bucket, increasing load, etc., which will seriously affect the normal operation of the equipment. operation and equipment safety. The general tensioning methods are: [0003] 1. Screw nut tension adjustment device: the screw is assembled...

AI Technical Summary

Problems solved by technology

This method has obvious disadvantages: First, the adjustment of the screw tensioning device requires manual operation, and at the same time requires the equipment to stop running, and the equipment can only be restarted after the adjustment work is completed, which will affect normal production, and there are certain safety hazards in manual adjustment; The second is that the screw tensioning device needs to be adjusted in a timely manner, and people may forget or delay the adjustment for other reasons. If the adjustment cannot be made in time, the chain or belt, hanging bucket, and increased load will occur; the third is when manual timely adjustment cannot be realized. If the tension is not balanced, it is usually tightened first and then loosened after adjustment.

Disadvantages of this method: First, the structure is not compact and takes up a lot of space, requiring more weight blocks, and the adjustment stroke is shorter; One-sided off-chain, off-belt, hanging bucket, increased load, etc.; third, the tension pressure is unbalanced. After the installation and adjustment are completed, the end of the heavy hammer starts to tilt upwards. With the elongation of the hoisting chain or hoisting belt, Then it hangs down again, the angle of the lever is constantly changing, and the tensioning pressure is constantly changing accordingly; the fourth is that the lever pivot pin and hinge pin are easily rusted to death in a harsh working environment for a long time, resulting in inflexible rotation and failure of the adjustment and rotation mechanism

Images