升降舞臺設計要點分析

升降舞臺http://m.8kvv.com/由臺面、轉軸、齒圈、滾柱組件、液壓馬達、鍵、底板、底座及均布于底座下方的驅動液壓缸組成。四只伸縮式液壓缸的活塞同步上升時，推動底座及舞臺沿導軌豎直上升。舞臺的旋轉運動由可獨立控制的液壓馬達驅動齒圈來實現。為有效降低摩擦阻力矩，在底座和臺面間布置了滾柱組件，保證液壓馬達能夠比較輕便地驅動舞臺回轉。
Landing stage by the table, the rotary shaft, the ring gear, the roller assembly, the hydraulic motor, the key, the bottom plate, the bottom of the base and uniformly distributed in the base of the drive hydraulic cylinder components. When four telescopic hydraulic cylinder piston rising, pushing the base and stage along the rail vertical rise. Rotational movement of the stage can be independently controlled by a hydraulic motor driving the ring gear to achieve. To effectively reduce the friction moment between the base and the table roller assembly arranged to ensure that the hydraulic motor can be driven relatively lightweight rotary stage.

升降舞臺油泵電機啟動后，雙聯(lián)油泵開始工作，但大流量泵和小流量泵均處于卸荷狀態(tài)。舞臺上升時，電磁鐵得電，升降回路升壓，大流量泵輸出的液壓油分別通過換向閥再經四個液控單向閥進入四個液壓缸無桿腔，產生推力，克服舞臺重量和導軌副摩擦推動舞臺上升。因液壓缸尺寸較大，舞臺上升速度較慢，為減少液壓元件的數量，保障系統(tǒng)的可靠性，不設置調速元件而采取由油泵和液壓缸尺寸予以直接保證的設計方案。當舞臺停止上升或到達最大行程時，電磁鐵失電，換向閥處于左位，主回路卸壓。
After landing stage pump motor starts to work a double-pump, but the pump flow and low flow pumps are in the unloading state. When the stage rises, the solenoid is energized, lifting loop boost, the flow of hydraulic oil pump output were re-enter through the valve through the four pilot-operated check valve four cylinder rod chamber to produce thrust to overcome the weight of the stage friction rail and push the stage rises. Due to the larger size of the hydraulic cylinder, the stage rises slowly, in order to reduce the number of hydraulic components to ensure the reliability of the system, do not set the speed element to be taken by the oil pump and hydraulic cylinder direct guarantee size design. When the stage is stopped up or reaching the maximum stroke solenoid YA6 energized, valve is in the left position, the main circuit relief.

升降舞臺由于液控單向閥鎖死，升降舞臺停止在鎖死位置；升降舞臺下降時，電磁鐵得電，系統(tǒng)控制回路升壓，高壓油進入液控單向閥的先導控制閥，將液控單向閥打開，同時得電，換向閥接油箱，舞臺機械設備依靠自重下降。下降速度可由調速閥調定。同步控制：本系統(tǒng)四條同步支路所選用的元件型號相同、各支路輸入流量相同，可以較好的保證四個伸縮式油缸的同步上升、同步下降。
Landing stage due to the check valve lock, landing stage stop in locked position; when the landing stage down solenoid is energized, the system control loop boost, high-pressure oil into the pilot check valve control valve, the liquid check valve is opened, while the electricity, fuel tank valve connection, stage machinery and equipment declined own weight. The rate of decline it is set by the governor valve. Synchronization control: the same branch of the system of choice of four synchronous component model, each branch of the same input flow, can better ensure the synchronization of the rise of the four telescopic cylinders, synchronized decline.

升降舞臺http://m.8kvv.com/為使四個液壓缸產生相同的推力，系統(tǒng)中采用四個單向閥將四條支路隔離開，然后用一個溢流閥進行壓力控制，保證各支路設定壓力相同。
Landing stage to make four cylinders produce the same thrust, the system uses four-way valve to isolate the four branches, and then use a pressure relief valve control, to ensure that each branch of the same set pressure.