CN206032459U - Rubber belt conveyor hydraulically automatic overspeed device tensioner - Google Patents

Abstract

The utility model discloses a rubber belt conveyor hydraulically automatic overspeed device tensioner, it is quick -witted including the driven roll, belt tensioning drum and the tensioning prop pulling that establish at the fuselage rear portion, and the belt tensioning drum is installed on the sports car, and the sports car passes through wire rope and tensioning prop pulling machine is connected, sports car and tensioning prop pulling machine when being connected through wire rope, a pneumatic cylinder concatenates again, the inlet connection of pneumatic cylinder is on the water pipe that prevents dust in the pit. The utility model discloses change exploiting field rubber belt conveyor's tensioning mode into the fluid pressure type tensioning by fixed tensioning formula, can start at rubber belt conveyor, all keep permanent tensioning force during different work condition such as operation, parking, guaranteed rubber belt conveyor's normal operating, reduce the impact to the belt fuselage, reduced belt lacing's damage, stopped the belt effectively to take absolutely and sliding accident, reduced the electromechanical accident emergence.

Description

Rubber conveyer hydraulically automatic tensioner

Technical field

This utility model is related to mine rubber band conveyer.

Background technology

At present, underground coal mine exploiting field rubber conveyer is designed with tensioner, and the effect of tensioner is：1st, make conveyer belt Normal pressure is formed on cylinder driving, it is ensured that drive cylinder transmit enough frictional tractions.2nd, ensure conveyer belt slack list There are enough tensile forces, prevent the conveyer belt in startup or operation from driving skidding on cylinder.3rd, ensure conveyer belt to from There are enough tensile forces at point, sag when limit transport band is loaded between carrying roller prevents conveyer belt undue pine in idlers pitch Relax and lose flute profile and cause belt deflection.4th, the elastic elongation and plastic elongation of conveyer belt are compensated.5th, can for plant maintenance, Conveyer belt is changed and is repaired and provides necessary stroke.6th, when in long belt conveyor, reduction starts, brakes in conveyer belt The dynamic load of appearance.

Current tensioner is generally tensioned prop drawer formula, and construction is as shown in Figure 1.It is to be provided with a pair in fuselage afterbody Cylinder, it is belt tensioning drum 3 that one is bend pulley 2 one, and belt tensioning drum 3 is on sport car 6；It is this tensioning prop drawer formula be Fixed, i.e., the steel wire rope 4 of sport car 6 is tensioned, and prop drawer 5 is direct to be tensed.As rubber conveyer is under unloaded and case of heavy load Required tensile force is different from, and we accurately cannot be measured to tensile force at this stage, for tensile force control entirely with Experience is judging；Tensioning prop drawer 5 after tightening belt, belt it is unloaded with heavy duty when all keep as tensile force.This Sample not only reduces the service life of belt, and excessive tensile force can easily cause belt broken belt, adhesive tape accident stress Shi Buneng plays cushioning effect, and broken belt accident also easily occurs.When adhesive tape fatigue elongation, tension force are less than normal, belt haulage chance goes out Existing adhesive tape slipping phenomenon, particularly transporter open moment, it is impossible in time by empty belt tension, it is impossible to ensure two driving cylinders While stress.

The content of the invention

To solve the deficiencies in the prior art, this utility model designs a kind of rubber conveyer hydraulically automatic tensioner, Prevent the generation of belt broken belt and skidding accident.

A kind of rubber conveyer hydraulically automatic tensioner, it includes bend pulley, the tensioning rolling for being located at fuselage afterbody Cylinder and tensioning prop drawer, belt tensioning drum are arranged on sport car, and sport car is connected with tensioning prop drawer by steel wire rope, and its feature exists In, when sport car is connected by steel wire rope with tensioning prop drawer, then a hydraulic cylinder being concatenated, the inlet of hydraulic cylinder is connected to down-hole On dust-proof water pipe, when the tension force and tightening force of belt change, hydraulic cylinder is made to follow belt to stretch using the static pressure of dust-proof water pipe Contracting amount automatic telescopic, makes the tension force and tightening force of belt keep constant.

Operation principle of the present utility model and good effect are：When ribbon conveyer starts, conveyer belt relaxes suddenly and extends, Now hydraulic cylinder shrinks piston rod under the static pressure effect of dust-proof water pipe immediately, compensates the elongation of conveyer belt.Belt conveying During machine stable operation, conveyer belt slowly can restore to the original state state, and now hydraulic cylinder can be slowly under the static pressure effect of dust-proof water pipe Elongation piston rod, compensates the shortening amount of conveyer belt.This utility model is by the tensioning mode of exploiting field rubber conveyer by fixing tensioning Formula is changed to hydraulic tension, can all keep permanent expanding force in different operating modes such as rubber conveyer startup, operation, parkings, it is ensured that The normal operation of rubber conveyer, reduces the impact to belt fuselage, reduces the damage of belt lacings, effectively prevent Belt broken belt and skidding accident, reduce Electromechanical Accidents generation.

Description of the drawings

Fig. 1 is the schematic diagram of existing tensioner；

Fig. 2 is the schematic diagram of this utility model embodiment, and rubber conveyer main part is eliminated in figure.

Marginal data, 1- aircraft tail cylinders, 2- bend pulleys, 3- belt tensioning drums, 4- steel wire ropes, 5- tensioning prop drawers, 6- are run Car, 7- hydraulic cylinders, 8- inlets, the dust-proof water pipes of 9-.

Specific embodiment

Fig. 1 is the schematic diagram of existing tension device of rubber belt conveyor, and its construction has been described in detail in background technology, and here is no longer Repeat.

This utility model rubber conveyer hydraulically automatic tensioner as shown in Figure 2, it includes being located at fuselage afterbody The bend pulley 2 at (namely 1 rear portion of aircraft tail cylinder), belt tensioning drum 3 and tensioning prop drawer 5, belt tensioning drum 3 are arranged on sport car 6 On, sport car 6 is connected with tensioning prop drawer 5 by steel wire rope 4, when wherein sport car 6 is connected by steel wire rope 4 with tensioning prop drawer 5, Concatenate a hydraulic cylinder 7 again, the inlet 8 of hydraulic cylinder 7 is connected on the dust-proof water pipe in down-hole 9, when the tension force and tightening force of belt During change, make hydraulic cylinder 7 follow belt stroke automatic telescopic using the static pressure of dust-proof water pipe 9, make tension force and the drawing of belt Clamp force keeps constant.

Claims (1)

1. a kind of rubber conveyer hydraulically automatic tensioner, it includes bend pulley, the belt tensioning drum for being located at fuselage afterbody With tensioning prop drawer, on sport car, sport car is connected with tensioning prop drawer belt tensioning drum by steel wire rope, it is characterised in that When described sport car is connected by steel wire rope with tensioning prop drawer, then a hydraulic cylinder is concatenated, the inlet of hydraulic cylinder is connected to On the dust-proof water pipe in down-hole.