文档介绍：中国矿业大学毕业设计任务书
毕业设计题目: JBB-300型运搬绞车设计
毕业设计专题题目:
毕业设计主要内容和要求:
摘要
JBB-300型运输绞车是一种新型的矿山辅助运输设备。其主要适用于煤矿中大型综采设备的搬迁,也可用于工作面的回柱放顶、大吨位的物料运输和矿车调度。该绞车的设计对于完善JB系列绞车起着重要的基础作用。
JBB—300型运输绞车主要由电动机、联轴器、变速器、卷筒、液压式电动制动闸、手动制动闸和控制开关支架等组成。本毕业设计的重点是减速器的设计,该传动系统采用了三级传动,圆弧锥齿轮传动、行星齿轮传动、圆柱直齿轮传动,形成封闭的传动路线,传动原理简单、可靠、高效。它采用双闸制动,一个为安全制动,一个为工作制动,更加安全有效,实现了大吨位、软启动、可制动的特点。
JBB—300型运输绞车具有良好的防爆性能和制动性能,容绳量大、适用条件强、使用寿命长、传动效率高等特点。该绞车结构紧凑,外形尺寸小,能够整机下井;结构为近似对称布置,外形美观,成长条形,底座呈雪橇状;绞车重心低,底座刚性好,可安装地锚,运转平稳,安全可靠,安装方便。
关键词:运输绞车; 软启动; 制动
ABSTRACT
JBB-300 transportation winch is a new kind of mining auxiliary conveying equipment. The serial winch products are suitable to move coal mining equipments positive excavating working place. And they could be also used to release upper plate and withdraw the props in the working place ,convey large-tonnage bulk material and schedule mining carts . The design of that winch includes to the perfect JB series winch important foundation function.
JBB-300 transportation winch is made up of motor, couple, reel, gearbox, electro-hydraulic-brake, manual brake and switch-controller-support. The point of this graduation design is the gearbox, The transmission system realizes a closed circuit which has three step, and consists of the bevel gear ,the gear and cylinder gear. Its transmission principle is simple , reliable and it has high efficiency. This winch uses two brakes to fulfill safe braking and working braking respectively, which make the witch’s braking more safe and effective. And this also makes the winch have the ablity of big tonnage ,soft starting and braking.
JBB-300 transportation winch has good blast protection property and braking property ,big cope capacity, long longevity and high transmission efficiency. It also pact structure, small external dimensions , approximately symmetrical structure ,long disappearance, basement in the shape of sleigh which is very convenient and smoothly moved ,low gravity center ,good stillness of basement. The installm