Rexroth剎車閥R900375749 LT09HG-1X/125/02M德國力士樂進口庫存現貨供應歡迎來電咨詢

雙油路動力制動閥
LT 07
直接驅動減壓閥，采用 3 路設計和無級機械致動
適用于行走機械
較大入口壓力 200 bar
公稱壓力 40 … 140 bar
適用于模塊化設計

特征
可選配角度傳感器，用以實現電子微動功能
由于安裝法蘭可自由轉動，可實現較優布管
制動力與致動力成正比
磁滯特性低，速度恒定
制動回路的較大集成壓力限制
外部制動壓力可恢復
所有執行器油口都位于一側
踏板角度可進行人體工學調節
可選配附加式踏板 LT19 oder LT20
所有版本的踏板均配有可拆卸的防滑橡膠墊
安裝尺寸小
2x 系列
產品說明：雙回路動力制動閥 LT 07 是采用 3 路設計、帶有連續機械致動的直動式減壓閥。
其次級回路存在較大的壓力限制。此外，次級回路（制動回路）中的持續壓力計量與致動元件（44）的路徑或踏板張角（8）成正比。
倘若一個制動回路故障，則第二個制動回路仍然可通過兩個控制滑閥（22）的機械接觸起作用。踏板的致動力保持不變。
雙回路動力制動閥主要由殼體（1）和控制滑閥（2）、主調節彈簧（3）、致動元件（4）以及復位彈簧（5）和（6）組成。該閥門通過致動元件（4）操作。這樣會使兩個主調節彈簧（3）抵靠在兩個控制滑閥（2）上。首先，控制側在通道 T 處關閉，然后控制側 SP 至 BR 打開，從而使兩個制動回路中的壓力均升高。隨后，制動管線中的壓力加大，同時作用于控制滑閥背后的制動壓力恢復裝置（7），使其抵靠在主調節彈簧（3）上，以使兩個制動回路中制動壓力（次級壓力）的增長與致動元件（4）的偏轉成正比。在致動元件的偏轉保持恒定的過程中，控制滑閥（2）移動到控制位置，并使進入通道 BR1 和 BR2中的壓力保持恒定 ，其中通道 BR1 中的壓力僅比通道 BR2的高約 2 bar。致動元件的致動力與其偏轉成正比。
如果主調節彈簧（3被釋放，則復位彈簧將控制滑閥移回至起始位置。控制側從 SP 至 BR 關閉，并從 BR 至 T打開。從而釋放次級回路（制動回路）。
組合式機械/液壓驅動
制動閥可以利用踏板進行機械控制和/或通過Pst 油口進行液壓控制。
帶旋轉角傳感器的型號（微動）
當驅動器輕輕地按壓制動踏板時，僅靜液壓驅動通過微動功能制動。旋轉角傳感器將踏板角度轉換成電氣輸出信號。
增加踏板上的按壓力時，會導致靜液壓和工作制動同時制動。因此，制動過程由兩部分組成：電氣和液壓輸出信號。
泵的控制裝置通過機載電子元件連接至工作制動的電角度傳感器。在整體制動行動的較好個部分中，僅發送電氣信號，隨后使傳動泵通過電子系統（微動）回擺。在第二個部分中，液壓制動壓力加大（液壓制動）。
注意：對于帶旋轉角傳感器的型號，規定采用艙室裝配進行傳感器裝配。

Rexroth剎車閥R900375749 LT09HG-1X/125/02M

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Rexroth剎車閥R900375749 LT09HG-1X/125/02M

汽車制動閥分為氣制動閥和液壓制動閥。制動閥的正常工作，對于駐車有著重要意義，它對于汽車能夠平穩制動提供了技術支持。這一技術的發展，對于汽車制造、道路交通安全都有著極其重要的意義。
中重型汽車在下長坡等工況下頻繁使用主制動器會使制動系統的熱負荷非常大而制動系統又無法及時將熱量釋放到周圍環境使得制動鼓和制動蹄的溫度過高磨損較快，從而使主制動器失去部分或全部的制動效能，這將嚴重影響主制動系統的連續制動的效能，從而影響制動的安全性。
而采用輔助制動裝置就可以減少主制動系統的使用頻率，減少因制動器連續使用產生的制動器溫度過高，效能下降，磨損嚴重等一系列問題。因此，輔助制動裝置的應用越來越廣泛。輔助制動裝置主要包括：發動機制動器、排氣制動閥、液力緩速器和電渦流緩速器，而排氣制動閥作為一種性價比較高的輔助制動裝置在中重型汽車及客車上被廣泛應用。