Chain tensioning device for scraper conveyor

Abstract

The invention discloses a chain tension device for a scraper conveyer. The chain tension device comprises a machine head, clamping plates, a pinch gap, a side plate, a rail groove, an advancing jack, a connector, a protective cover, a vertical groove, a plug, a box body, an attachment bolt, a chain wheel and a chain wheel shaft, wherein the vertical groove and the rail groove are formed in the side plate; the sprocket shaft is arranged on the rail groove; the plug is inserted into the vertical groove; the connector is welded on the side plate; one end of the advancing jack is connected with the connector; the other end of the advancing jack is articulated to the sprocket shaft; the outside of the advancing jack is provided with the protective cover; the protective cover is fixed on the side plate through bolts; the pinch gap is formed by intersection of the two clamping plates on the machine head; the box body is arranged in the pinch gap, and is connected with the sprocket shaft through the attachment bolt; a piston rod of the advancing jack extends outwards; a scraper chain is gradually tensioned. The chain tension device of the scraper conveyer has the beneficial effects of being simple in structure, and convenient to operate; tension of the scraper chain does not relate to movement of a motor and a speed reducer, so that the scraper chain is high in tension speed, and safe; the production efficiency is improved; the labor intensity of a worker is lowered.

Description

technical field [0001] The invention relates to coal mine transportation equipment, in particular to a chain tensioning device of a scraper conveyor. Background technique [0002] The scraper conveyor uses a scraper chain to pull the scraper to transport coal in the trough. The scraper chain circulates to drive the coal to move along the chute until it is unloaded at the head of the machine. Function, the scraper chain often becomes longer after a period of time. If the longer scraper chain is not dealt with in time, it will cause the chain to drop suddenly during the operation of the scraper conveyor, or the scraper chain will be stuck on the bottom cover of the scraper conveyor. The scraper chain is broken on the board, causing serious equipment accidents. Therefore, when the scraper chain of the scraper conveyor becomes longer, it must be dealt with in time. The existing method for dealing with the lengthening of the scraper chain is to manually remove the scraper chain ...

AI Technical Summary

Problems solved by technology

[0002] The scraper conveyor uses a scraper chain to pull the scraper to transport coal in the trough. The scraper chain circulates to drive the coal to move along the chute until it is unloaded at the head of the machine. Function, the scraper chain often becomes longer after a period of time. If the longer scraper chain is not dealt with in time, it will cause the chain to drop suddenly during the operation of the scraper conveyor, or the scraper chain will be stuck on the bottom cover of the scraper conveyor. The scraper chain is broken on the board, causing serious equipment accidents. Therefore, when the scraper chain of the scraper conveyor becomes longer, it must be dealt with in time. The existing method for dealing with the lengthening of the scraper chain is to manually remove the scraper chain The chain link is used to tension the scraper chain. This method is labor-intensive for workers, and the replacement time is long, which has a great impact on production. The other method is to make the machine head move as a whole to tension the scraper chain. This method There are many disadvantages in the way of tensioning the scraper chain, such as the machine head cannot be connected with the hydraulic support, which makes the roof support at this place very difficult and poses a great threat to safety, and the structure of this moving method is complicated, and the equipment is not easily damaged Maintenance, and because the machine head moves as a whole, the volume is large, the weight is large, and a large thrust is required, so designing a chain tensioning device for scraper conveyors is an important means to improve the performance of scraper conveyors and improve transportation efficiency

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