The draw-gear of extruder
Technical field
The utility model relates to a kind of draw-gear that is used for various production lines such as plastic extruder, Rubber Extruder.
Background technology
Existing extruder traction device is caterpillar structure mostly, but in general its powerful complex structure, bulky needs to be equipped with source of the gas, installs and move all inconvenient.Along with the innovation of the improvement of Shooting Technique and cable, cable configuration, some production lines are smaller to the power requirement of draw-gear; For meeting the market requirement, the kind of enterprise product also becomes increasingly abundant, and wishes building and reequip than being easier to of production line.Existing draw-gear can not adapt to technological requirement in some occasions.
The utility model content
Technical problem to be solved in the utility model provides a kind of draw-gear of installing and moving the extruder that is more prone to.
For solving above technical scheme, the utility model is taked following technical scheme: a kind of draw-gear of extruder, comprise framework, be fixed on the PTO on the framework, the traction wheel that is connected with this PTO, described PTO is a reducing motor, described reducing motor comprise variable-frequency motor, with the worm type of reduction gearing that the output shaft of this variable-frequency motor is connected, described traction wheel is fixed on the output shaft of worm type of reduction gearing.
Also be provided with the meter-measuring device that is used to monitor the traction wheel rotating speed on the described worm type of reduction gearing.
The material of described framework is an aluminium alloy.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage: adopt variable-frequency motor, the control ratio of its hauling speed is easier to and can realizes stepless speed regulation, can be good at adapting to technological requirement; This draw-gear overall structure is simple, compact, does not also need other auxiliary equipment (for example source of the gas), and installation and resettlement are all very convenient.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model;
Wherein: 1, framework, 2, side plate, 3, traction wheel, 4, lock sleeve, 5, the separated time wheel, 6, reducing motor, 61, variable-frequency motor, 62, worm type of reduction gearing, 7, meter-measuring device.
The specific embodiment
Draw-gear referring to extruder shown in Figure 1, comprise framework 1 that aluminium alloy extrusions assembles, be fixed on the reducing motor 6 on the framework 1, described reducing motor 6 comprise variable-frequency motor 61, with the worm type of reduction gearing 62 that the output shaft of this variable-frequency motor 61 is connected, described traction wheel 3 is fixed on the output shaft of worm type of reduction gearing 62.Also be provided with the meter-measuring device 7 that is used to monitor traction wheel 3 rotating speeds on the described worm type of reduction gearing 62.
Aluminium alloy extrusions not only outward appearance is beautiful, and is easy to process, the more important thing is its intensity height (aluminium alloy that has can reach the intensity of No. 45 steel), and (being 1/3 weight of steel) in light weight, installation or resettlement are convenient especially, and install at the scene that is fit to the workshop more.
Variable-frequency motor 61 is selected the vertical mounting means of low power frequency conversion for use, combines with the worm type of reduction gearing 62 of aluminum hull, is directly installed on the side plate 2 by flange.Final drive shaft one end is fixed on worm type of reduction gearing 62 interior output shafts as worm type of reduction gearing 62, and the other end is directly installed traction wheel 3, traction wheel 3 and the separated time wheel 5 main draw-gears as optical cable core.Correct in order to guarantee hauling machine metering when normally drawing cable, this machine has also disposed meter-measuring device 7, is installed in the final drive shaft rear end, counts and convert to metering by non-contact type approach switch, and can carry out variable-frequency motor 61 rotating speed corrections at any time.
The speed of variable-frequency motor 61 can electrodelessly change, only need change during use its frequency just can, speed of production can be regulated at any time by technological requirement, so hitch structure is simple.The power of variable-frequency motor 61 is generally smaller, and the traction wheel diameter is also smaller, thus only be suitable for use in the cable core in little caliber and the small tension receiving coil scope, and can not be used for the very big production line of tractive force.But this traction is installed and convenient removal, the speed of production line can be very fast, even can normally use under 400 meters/minute situation, also changed the deficiency that traditional crawler type traction needs auxiliary equipment, need not to provide the source of the gas of certain pressure, made things convenient for installation.