附录
Lifting machine main structure identification
This topic is the main content of design is based on small scissors type elevator machine structure design, scissors, type elevator machine market are more mature, type very rich also. According to the size of the scissors into large scissor lifting machine (and JiaoZi mother type), and small cut (single cut) lift; According to the driving type can be divided into mechanical, electrical and hydraulic, gas to liquid driving type; According to installation forms can be divided into hiding again to install, ground installation. Because the design of lifting weight to passenger vehicles for 2t below, so adopt double hinged scissor hydraulic lift is fully comply with design concept. In order to suit the size, the foundation maintenance enterprises without excessive requirements, the flat panel installation can be put on the ground directly.
Judging from the overall structure, double scissor lift hinged by lifting arm, slide device, fluctuation platform, electronically controlled hydraulic system four major part. Lifting height in reach, because of hydraulic system of choice of piston rod is greater than the actual lifting travel to travel, so must needed to block block to slide place to limit its lifting height. Because of this design uses slope type FangDeng to make cars rise to lifting position, the application of galvanism use safety higher hydraulic system to contr
ol, so avoid plus hydraulic cylinder with self-locking device, namely cost savings have safe operation. Double articulated lift two groups of identical lifting arm agencies on both sides, respectively, between a pulley about put in. By lifting machine electric control system, by hydraulic system output hydraulic oil as driving, driving the piston rod telescopic lifting arm while both sides rise and fall, the lock. Lift side for the lower welding beam and floor in the fixed hinge bearing, by lifting arm in hinge pin connections on fixed bearings. Another side to the lower Angle, within the slide block lifting arm through the axes and pulley connection. The hydraulic cylinder by lifting transverse axis to lift the whole platform, lifting arm to fixed hinge on one side for the fulcrum, pulley bearings inside or outside to slide, make lift up and down, when reaching an appropriate position, use the lifting control platform and block block the lock. Scissors type elevator machine operation is
convenient, simple structure and easy maintenance, cover an area of an area small, suitable for most cars maintenance, and safe and reliable.content的中文翻译
译文
举升系统主要结构的设计
本课题设计的内容主要是基于小型剪刀式举升机的结构设计，剪刀式举升机的市场较成熟，类型也很丰
富。按照剪刀的大小分为大剪式举升机（又叫子母式），还有小剪（单剪）举升机；按照驱动形式又可分为机械式、电控液压式、气液驱动式；按照安装形式又可以分为藏地安装，地面安装。因为此次设计所要举升的重量为2t以下的乘用车，所以本设计采用双铰接剪叉式液压驱动举升机就完全符合设计理念。为了适合目前众多大小维修企业的需要，而且对地基又没有过多要求，因此采用钢板直接放在地面安装即可。
从整体结构来看，双铰接剪叉式举升机由举升臂、滑动装置，上下平台，电控液压系统四大部分组成。在达到举升高度时，由于选择的液压系统中活塞杆的行程要大于实际举升所需行程，所以必须在滑道处加以挡块来限制其举升高度。由于本次设计采用斜坡式方凳来使汽车上升到举升位置，再加之利用安全性较高的电控液压系统来控制，所以避免了另加液压缸自锁装置，即节省了成本也可以保证安全操作。双铰接式举升机有两组完全相同的举升臂机构，分别放于左右两侧滑道滑轮之间。举升机由电气系统控制，由液压系统输出液压油作为动力驱动活塞杆的伸缩，轴带动两侧举升臂同时上升、下降、电控锁止。
举升机一侧上下端为焊接在横梁及底板上的固定铰支座，举升臂由销轴连接固定在铰支座上。另一侧上下端为滑轮在角钢内滑动，举升臂通过轴与滑轮连接。液压缸通过举升横向支承轴来举升整个平台，举升臂以固定铰支座一侧为支点，滑轮向内或向外滑动，使举升机上升下降，当达到适当的举升位置时，利用电控液压台及挡块锁止。剪刀式举升机操作方便，结构简单且易于维修，占地面积小，适用于大多
数乘用车的维修，且安全可靠。

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