CN103224117A - 一种自动反馈调节碎玻璃传送张力的系统 - Google Patents
一种自动反馈调节碎玻璃传送张力的系统 Download PDFInfo
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Abstract
一种自动反馈调节碎玻璃传送张力的系统,包括传送机构、绞碎机和回收桶,所述碎玻璃经传送机构送入绞碎机中绞碎后,传送入回收桶中,所述传送机构包括传动马达、传送带和传动滚筒,所述传送带缠绕于两传动滚筒之间,传动马达驱动传动滚筒转动,以使之带动传送带转动,将碎玻璃送入绞碎机中进行绞碎回收,本系统还增设有与传动滚筒相连接的电磁控制系统,其根据两传动滚筒之间的间距变化,来自动调节传送带的张力。
Description
技术领域
本发明涉及一种传动系统,尤其是指一种通过自动电流负反馈电路对传送带的张力进行控制调节的自动反馈调节碎玻璃传送张力的系统。
背景技术
现有的碎玻璃传送系统,传动滚筒中常常卷入玻璃碎屑,玻璃碎屑长时间在传动滚筒中摩擦,会导致传送带松脱,使得传送带的张力变小,而无法正常地将碎玻璃传送至绞碎机中,从而造成大量碎玻璃塞阻在传送带上,工作人员需要花费大量时间和精力才能将传送带和传动滚筒清理干净,耗时费力,致使生产效率下降,使得传送系统的使用寿命下降。
因此,有必要提供一种可以自动调节传动带张力的传送系统,以保证碎玻璃的正常传送,提高工作效率。
发明内容
基于现有技术的不足,本发明的主要目的在于提供可对传送带的张力进行自动调节控制的控制系统,以使得碎玻璃可保持顺畅地传送。
本发明提供一种自动反馈调节碎玻璃传送张力的系统,包括传送机构、绞碎机和回收桶,所述碎玻璃经传送机构送入绞碎机中绞碎后,传送入回收桶中,所述传送机构包括传动马达、传送带和传动滚筒,所述传送带缠绕于两传动滚筒之间,传动马达驱动传动滚筒转动,以使之带动传送带转动,将碎玻璃送入绞碎机中进行绞碎回收,其中,增设有与传动滚筒相连接的电磁控制系统,其根据两传动滚筒之间的间距变化,来自动调节传送带的张力。
优选地,所述电磁控制系统包括依次电性连接的电源、两个电磁线圈、电流计以及电流负反馈电路,所述电磁线圈中的电磁铁相向设置,在通电状态下,产生相向排斥力,通过电流负反馈电路调节电磁线圈的通电电流。
优选地,所述电流负反馈电路与可变电阻、电流计相互串联,电流负反馈电路根据电流计所反馈的当前电流值,改变可变电阻的阻值,以调节电流的大小。
优选地,所述电流负反馈电路对电磁线圈的通电电流进行负反馈控制,使得传动带的张力保持恒定:
当电流计检测到电流减小时,传动带的张力亦减小,通过电流负反馈电路调节电阻减小,则输出电流增加,以加大两电磁铁之间的排斥力,两传动滚筒间距增大,则传动带的张力加大;
当电流计检测到电流增大时,传动带的张力亦增大,通过电流负反馈电路调节电阻增大,则输出电流减小,以减小两电磁铁之间的排斥力,两传动滚筒间距减小,则传动带的张力减小。
优选地,所述电磁线圈包括固定线圈和可动线圈,固定线圈中设有固定电磁铁,所述可动线圈中设有可动电磁铁,将所述固定电磁铁和可动电磁铁的磁极相对设置。所述两传动滚筒包括固定传动滚筒和活动传动滚筒,通过活动传动滚筒的水平移动来调节两传动滚筒之间的间距。所述活动传动滚筒通过支撑杆与可动电磁铁相连接,在电磁斥力的推动下,调整两传动滚筒之间的间距。
与现有技术相比,本发明提供了通过电流负反馈电路对传送带的张力进行自动控制系统,其具有以下优点:
(1)将一端传动滚筒设为固定传送滚筒,而另一端设为活动传送滚筒,通过活动传送滚筒的平移来调节两传动滚筒之间的间距,由此可调节缠绕于其上的传送带的张力大小,避免传送带过送或过紧,使得碎玻璃保持顺畅地传送;
(2)通过与传动滚筒相连的电磁控制系统,调节传动滚筒之间的间距,根据两电磁体之间的磁力变化,来调节输出电流,磁力下降时,减小电阻,增加电流,磁力提高时,增加电阻,减小电流,通过电流负反馈电路对其进行负反馈控制,以实时调整磁力大小,进而调节两传动滚筒之间的间距,使得传送带的张力保持恒定。
附图说明
图1为本发明一种自动反馈调节碎玻璃传送张力的传送系统;
图2为本发明一种自动反馈调节碎玻璃传送张力的电磁控制系统示意图;
具体实施方式
参照图1所示,本发明提供了一种自动反馈调节碎玻璃传送张力的系统100,包括传送机构1、绞碎机2和回收桶3,所述碎玻璃经传送机构1送入绞碎机2中绞碎后,传送入回收桶3中。其中,所述传送机构1包括传动马达10、传送带12和传动滚筒14,所述传动马达10与传动滚筒14电连接,以驱动传动转筒14转动,所述传送带12缠绕于两传动滚筒14之间,其在传动滚筒14的转动下可同步转动,以将置放于传动带12上的碎玻璃送入绞碎机2中绞碎,在绞碎机2中绞碎的碎玻璃经皮带传送至回收桶3中回收处理。
其中,结合图2所示,所述调节碎玻璃传送张力的系统100还进一步增设有与传动滚筒14相连接的电磁控制系统5,其根据两传动滚筒14之间的间距变化,来自动调节传动滚筒14与传送带12之间的张力。其中,所述电磁控制系统5包括依次电性连接的电源50、两个电磁线圈52、电流计54以及电流负反馈电路56,所述电源50与电流负反馈电路56电连接,以向其供电,两电磁线圈52相互串联,电流计54设置于其中一个电磁线圈52的电流输出端与电流负反馈电路56之间,以检测经电磁线圈52输出的即时电流值,并传输至电流负反馈电路56对电磁线圈的输入电流进行负反馈控制。在本实施例中,所述电磁线圈52包括固定线圈52a和可动线圈52b,电源线由固定线圈52a引入,依次缠绕固定线圈52a和可动线圈52b后,从可动线圈52b的一端引出,在所述固定线圈52a中设有固定电磁铁520,所述可动线圈52b中设有可动电磁铁522,根据电磁铁异性相吸,同行相斥的原理设计线圈绕线方式和电流方向,将所述固定电磁铁520和可动电磁铁522的磁极相对设置,在本实施例中,所述固定电磁铁520的N极与可动电磁铁522的N极相对,获得同性相斥的电路,在通电状态下,产生相向排斥力,通过所述排斥力大小的改变来调整两个传动滚筒14之间的间距。
根据F=K(i2/d2),两电磁铁之间的磁力F与电流i的平方成正比,且与两电磁铁之间的间距d的平方成反比,磁力F随电流增加而增加,随两电磁铁的间距增加而减小。由此,通过控制电流的变化,可实现对磁力F变化的控制。而通电电流大小的控制调节可通过电流负反馈电路来实现,通过负反馈控制,使得传动带的张力保持恒定。
所述两传动滚筒14包括固定传动滚筒140和活动传动滚筒142,通过活动传动滚筒142的水平移动来调节两传动滚筒14之间的间距,以调整传动带12的张力。
所述活动传动滚筒142通过支撑杆144与可动电磁铁522相连接,在电磁力的推动下,调整两传动滚筒14之间的间距。
所述电流计54设置于电磁线圈52与电流负反馈电路56之间,用于测定由电磁线圈输出的当前电流值,并将所述电流值反馈至电流负反馈电路来调节电流的变化。
为了实现对通电电流的大小进行实时调节,在电磁线圈52与电流负反馈电路56之间,设置有可变电阻58,通过改变可变电阻的阻值,以调节电流的大小。
以下详细说明电流负反馈电路的控制过程:
当传送带12和传动滚筒14之间发生松脱时,传动带12的张力减小,这时,在电磁排斥力的作用下,可动电磁铁522向可动线圈52b方向移动,使得两电磁线圈52的间距变大,传送带12的张力增大,传送带12在两传送滚筒14之间张紧,使其可保持正常的张力传送碎玻璃。
当两电磁线圈52的间距变大,则两者之间的磁力变小,则电流计54检测到输出的电流减小,传动带12的张力亦减小,这时,通过电流负反馈电路56调节可变电阻58的阻值减小,则输出电流增加,以加大两电磁铁之间的排斥力,使得电磁铁持续施加适宜的力来顶住传送带12和传送滚筒14,两传动滚筒14间距增大,则传动带12的张力加大,从而实现了传送带张力的实施调整,传送带12保持张紧状态,使得碎玻璃可在其上正常传送;
反之,当传送带12的张力过大,则传送带12将给传送滚筒14施加向内的力,由此亦推动电磁铁,向其施加向内的推力,使得固定电磁铁520和可动电磁铁522之间的间距变小,磁力增大,则电流计54检测到电流增大,传动带12的张力亦增大,通过电流负反馈电路56调节可变电阻58的阻值增大,则输出电流减小,以减小两电磁铁之间的排斥力,两传动滚筒14间距减小,则传动带12的张力减小,使得电流和磁力达到稳定状态,传送带12保持张紧状态,使得碎玻璃可继续在其上正常传送。
这种自动反馈控制系统,利用了磁力、电流和电磁铁间距的相互关系,自动地调节电流强度和电磁铁间距的平衡,以实现传送带的张力恒定状态,不必经操作人员手动调节,避免了因传送带过松致使碎玻璃无法正常传送至绞碎机,而导致碎玻璃塞阻在传送带上,或因其过紧而造成传送带弹性下降等问题,大大提高了生产效率。
Claims (7)
1.一种自动反馈调节碎玻璃传送张力的系统,包括传送机构、绞碎机和回收桶,所述碎玻璃经传送机构送入绞碎机中绞碎后,传送入回收桶中,所述传送机构包括传动马达、传送带和传动滚筒,所述传送带缠绕于两传动滚筒之间,传动马达驱动传动滚筒转动,以使之带动传送带转动,将碎玻璃送入绞碎机中进行绞碎回收,其特征在于:增设有与传动滚筒相连接的电磁控制系统,其根据两传动滚筒之间的间距变化,来自动调节传送带的张力。
2.根据权利要求1所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述电磁控制系统包括依次电性连接的电源、两个电磁线圈、电流计以及电流负反馈电路,所述电磁线圈中的电磁铁相向设置,在通电状态下,产生相向排斥力,通过电流负反馈电路调节电磁线圈的通电电流。
3.根据权利要求2所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述电流负反馈电路与可变电阻、电流计相互串联,电流负反馈电路根据电流计所反馈的当前电流值,改变可变电阻的阻值,以调节电流的大小。
4.根据权利要求3所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述电流负反馈电路对电磁线圈的通电电流进行负反馈控制,使得传动带的张力保持恒定:
当电流计检测到电流减小时,传动带的张力亦减小,通过电流负反馈电路调节电阻减小,则输出电流增加,以加大两电磁铁之间的排斥力,两传动滚筒间距增大,则传动带的张力加大;
当电流计检测到电流增大时,传动带的张力亦增大,通过电流负反馈电路调节电阻增大,则输出电流减小,以减小两电磁铁之间的排斥力,两传动滚筒间距减小,则传动带的张力减小。
5.根据权利要求4所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述电磁线圈包括固定线圈和可动线圈,固定线圈中设有固定电磁铁,可动线圈中设有可动电磁铁,将所述固定电磁铁和可动电磁铁的磁极相对设置。
6.根据权利要求1-5中任一项所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述两传动滚筒包括固定传动滚筒和活动传动滚筒,通过活动传动滚筒的水平移动来调节两传动滚筒之间的间距。
7.根据权利要求6所述的自动反馈调节碎玻璃传送张力的系统,其特征在于:所述活动传动滚筒通过支撑杆与可动电磁铁相连接,在电磁斥力的推动下,调整两传动滚筒之间的间距。
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