High-strength round chain tightener

Abstract

The invention discloses a high-strength round chain tightener which comprises a speed reduction transmission box, a hydraulic driving box, a speed reduction assembly and a piston driving cylinder. The speed reduction assembly is fixedly installed on one side of the hydraulic driving box and fixedly connected with the input end of the speed reduction transmission box; the piston driving cylinder is fixedly installed on one side of the speed-reducing transmission box, the output end of the piston driving cylinder is fixedly connected with a driving rod, a fixed lug located at one end of the speed-reducing transmission box is fixedly installed on the bottom face of the speed-reducing transmission box, and a driving toothed plate is slidably installed on the bottom face of the speed-reducing transmission box. According to the chain tensioning device, a hydraulic drive type chain tensioning structure is adopted, hydraulic oil is input into an eccentric rotating cavity through a hydraulic pump station to push a tangential main rotating drum to rotate to drive a driving rod and a driving toothed plate to move, so that the relative distance between a movable lug and a fixed lug is changed to conduct chain tensioning operation, hydraulic output torque is large, and the load is large; and various high-strength operations can be carried out.

Description

technical field [0001] The invention relates to the technical field of chain tensioners, in particular to a high-strength circular chain tensioner. Background technique [0002] At present, there are many places where circular chains are needed in the process of mining production operations, such as scraper conveyors, loaders, roadheaders, etc. In the process of using these equipments, the ring chain is often broken or deformed due to excessive load or equipment interference, which requires frequent disassembly and chain installation. In addition, because the ring chain is tightly installed to meet the needs of transmission, it cannot be disassembled and assembled by manpower. At this time, a chain tightening device needs to be installed to complete it. [0003] The circular chain is a chain body composed of several circular rings connected in series. It is suitable for coal mine scraper conveyors, coal plows, drum shearers and other mechanical traction chains. The patent n...

AI Technical Summary

Problems solved by technology

And because the round link chain is tightly installed to meet the needs of transmission, it cannot be disassembled by manpower. At this time, it is necessary to install a chain tightening device to complete it.

[0003] The circular link chain is a chain composed of several circular rings connected in series. It is suitable for scraper conveyors in coal mines, coal plows, drum shearers and other mechanical traction chains. The Chinese patent No. 200520073289.6 discloses A chain tensioner for scraper transportation, which basically solves the safety problems in the prior art, but its structure is not ideal

The chain tensioner mainly adopts a connecting rod and hinge structure, and the retraction of the hook is driven by the lifting of the screw rod, so as to achieve the purpose of the elastic chain. At the same time, because the force applying mechanism adopts the structure of connecting rod and hinge, the strength is small and the ability to bear the load is insufficient

[0004] In addition, in practical applications, because the ring chain is tightly connected to meet the needs of transmission, the ring chain is often broken or deformed and cannot be dismantled and installed by manpower. Some tight chains The device uses the meshing of the screw and the nut and then adopts the tension structure such as the screw rod to tighten the two sections of the circular link chain. Due to the large load of the conveyor, transfer machine, and roadheader, the load of the circular link chain is often huge. Now Some tensile structures such as screw rods are prone to collapse and slipping of wires during large loads and high strengths, resulting in damage to the tight chain structure

[0005] In view of this, the existing problems are studied and improved, and a high-strength circular chain tensioner is provided to solve the existing problems of low strength and low work efficiency, aiming to solve problems and improve practical value through this technology sexual purpose

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