Product introduction: (I) Overview of external electric drum The external electric drum is a new type of electric drive device that installs the motor on the outside of the drum body and the speed reduction mechanism is installed inside the drum body. It not only has all the advantages of the original electric drum, but also overcomes the poor heat dissipation conditions of the motor, easy to burn, and limited power consumption.
(I) Overview of external drum motor
The external electric drum is a new type of electric drive device in which the motor is mounted on the outside of the drum body and the speed reduction mechanism is mounted inside the drum body. It not only has all the advantages of the original electric drum, but also overcomes the weakness of the motor, such as poor heat dissipation, easy burning, and limited power consumption. The power can reach 160kW or more.
The external type electric drum has three types of installation: l type, II type and III type, which can meet the installation requirements of different occasions. There are also three types of internal reduction transmission structures: fixed shaft gears, cycloidal pinwheels, and halo gears. The species has been carefully designed and used safely and reliably.
The supporting power adopts Y series standard motor. If YB series flameproof type motor is selected, it can be applied to the field of explosion-proof requirements. Therefore, various types of external electric drum can be used to generate explosion-proof type.
The external type electric drum used by our company (GB5014-85) HL type elastic pin type coupling: For the great work, in order to improve the starting performance, YO×Limited torque type coupler can be used instead of the coupling. Brakes can be installed with brake requirements. The brakes are equipped with Yw B-type electric hydraulic block brakes, and correspondingly equipped with the same type of coupling or coupling with brake wheels; The required backstop can be added.
The company can design motor brackets and brakes, couplings, hydraulic coupler shields, etc. for the user, the design is based on user requirements.
The external motor drum produced by our company has been widely used in large and medium-sized belt conveyors in various departments such as ports, mines, metallurgy and electric power, and has been well received by users.
(B), external type of electric drum type classification table WI
（三）、外置式电动滚筒规格选用表
（1）WDTN型系列参数表
续表
注：“O”符号表示只能配6极电动机：“△”符号表示只能配4极电动机：“口”符号表示可配6极电动机，也可配4极电动机。若没有特别说明，将优先选用4极电动机
(2）WBTN型系列参数表
注：1表中配B18~B33将优先选用4极电动机，配B39~B45选用6极电动机。
2表中粗线框内型号选用6极电动机或采用双级摆线传动减速。
(3)WXNT型系列参数表
注：“O”符号表示只能配6极电动机；“△”符号表示只能配4极电动机。
（四）、外置式电动滚筒外形及安装尺寸
1.滚筒体部分外形及安装尺寸表
注：图中Ll值为输入支座中心到输入轴轴伸肩胛的尺寸，如为WⅡ式直联接轴型外置式电动滚筒时则为输入支座中心到电机法兰端面的参考尺寸。
2.WI型驱动部分安装尺寸表
注：1.上表中液力偶合器长度为参考尺寸
2.联轴器及偶合器具体尺寸见附录
3.WII型驱动部分安装尺寸表
图三:WIIG立式电机直联联轴器型
图四:WII立式电机直联联轴型
注：1.上表中WIIG型驱动部分安装尺寸请参照外置表六中相关数据。
2.电机机座号大于Y200时建议使用B35式电机，上表中字母定义参见外置六。
4.WIII型驱动部分安装尺寸表
（五）、外置式电动滚筒驱动部分电机、柱销联轴器、偶合器、制动器型号对应表
（六）、附录：配套联轴器、偶合器、制动器尺寸参数表
附录一：HL、HLL型弹性术销联轴器
1、4半联轴器；2档扳：3柱销；5螺钉；6垫圈；7制动鼓
附录二：YOX限矩形液力偶合器
注：本系列限矩型液力偶合器均采用Y型长圆柱轴孔、A型键槽型式，尺寸、公差及所有未注尺寸，公差、技术要求均按国家标准制作。
附录三：YOX，型带制动轮式液力偶合器
1制动轮，2连接轴，3外壳，4涡轮，5主轴，6泵轮，7后辅腔，8连接盘，9易熔塞
注：本系列带制动轮式限矩型液力偶合器均采用Y型长圆柱轴孔、A型键槽型式、尺寸、公差及所有未注尺寸，公差、技术要求均按国家标准制作。
附录四：YWZ5型电力液压块式制动器
