移動(dòng)式升降機(jī)的主要結(jié)構(gòu)和系統(tǒng)描述是什么？
What is the main structure and system description of the mobile lift?
移動(dòng)式升降機(jī)一般由機(jī)械結(jié)構(gòu)、液壓系統(tǒng)、電氣系統(tǒng)和移動(dòng)裝置四部分組成。固定式液壓升降貨梯基本相同，只是沒有移動(dòng)裝置。油泵與電機(jī)組成動(dòng)力單元，移動(dòng)升降平臺(tái)為內(nèi)置動(dòng)力單元，固定升降貨梯為外接動(dòng)力單元。
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、 主要結(jié)構(gòu)：移動(dòng)式升降平臺(tái)的機(jī)械結(jié)構(gòu)一般由底座、吊桿和工作臺(tái)三部分組成。底座與相應(yīng)強(qiáng)度鋼板焊接。吊桿采用高強(qiáng)度無縫矩形管，強(qiáng)度高，外形美觀。工作臺(tái)可由多人同時(shí)操作，并設(shè)有護(hù)欄和低壓控制屏，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.

第二移動(dòng)升降平臺(tái)液壓系統(tǒng)說明：從油泵吸油時(shí)，推動(dòng)油缸活塞，垂直升降橫臂，在限速閥和流量調(diào)節(jié)閥的監(jiān)控下，壓力油通過電磁閥流回油箱。油缸過載時(shí)，油泵輸出的壓力油通過閥（閥）直接流回油箱。為防止油管破裂引起失控下降事故，在各油缸進(jìn)（回）油管上設(shè)置單向限速閥，即使油管破裂也能保證正常下降速度。
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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