移动式升降机的主要结构和系统描述是什么？
What is the main structure and system description of the mobile lift?
移动式升降机一般由机械结构、液压系统、电气系统和移动装置四部分组成。固定式液压升降货梯基本相同，只是没有移动装置。油泵与电机组成动力单元，移动升降平台为内置动力单元，固定升降货梯为外接动力单元。
Mobile elevator generally consists of mechanical structure, hydraulic system, electrical system and mobile device. The fixed hydraulic elevator is basically the same, except that there is no moving device. The oil pump and motor form a power unit, the mobile lifting platform is a built-in power unit, and the fixed lifting cargo elevator is an external power unit.
一、 主要结构：移动式升降平台的机械结构一般由底座、吊杆和工作台三部分组成。底座与相应强度钢板焊接。吊杆采用高强度无缝矩形管，强度高，外形美观。工作台可由多人同时操作，并设有护栏和低压控制屏，操作可靠。
1、 Main structure: The mechanical structure of mobile lifting platform is generally composed of three parts: base, suspender and workbench. The base is welded with corresponding strength steel plate. The suspender is made of high-strength seamless rectangular pipe with high strength and beautiful appearance. The worktable can be operated by many people at the same time, and is equipped with safety guardrail and low-voltage control panel, so the operation is safe and reliable.

第二移动升降平台液压系统说明：从油泵吸油时，推动油缸活塞，垂直升降横臂，在限速阀和流量调节阀的监控下，压力油通过电磁阀流回油箱。油缸过载时，油泵输出的压力油通过阀（阀）直接流回油箱。为防止油管破裂引起失控下降事故，在各油缸进（回）油管上设置单向限速阀，即使油管破裂也能保证正常下降速度。
Description of the hydraulic system of the second mobile lifting platform: when sucking oil from the oil pump, push the cylinder piston to vertically lift the cross arm. Under the monitoring of the speed limiting valve and the flow regulating valve, the pressure oil flows back to the oil tank through the solenoid valve. When the oil cylinder is overloaded, the pressure oil output from the oil pump directly flows back to the oil tank through the safety valve (safety valve). To prevent uncontrolled descent accidents caused by tubing rupture, one-way speed limiting valves are set on the oil inlet (return) pipes of each oil cylinder to ensure normal descent speed even if tubing rupture occurs.
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The above is a detailed introduction to the manufacturer of the hydraulic freight elevator. I hope it will be helpful to you. If you have any questions, please contact us. We will provide you with our service in our attitude http://www.qingfeijixie.cn