The utility model discloses an anti pinch system for opening and closing doors of public transport doors, which comprises a cylinder for opening and closing doors. The left and right cavities of the cylinder for opening and closing doors are connected with the reversing valve through two one-way throttle valves; the left control port of the reversing valve is respectively connected with the driver's door closing button and the steward's door closing button through the shuttle valve; the right control port of the reversing valve is respectively connected with the shuttle valve and the double pressure valve through the shuttle valve Connect. The shuttle valve is connected with the driver's open button and the steward's open button respectively. The double pressure valve is connected with the travel reversing valve and the pressure sequence valve respectively. The travel reversing valve and the pressure sequence valve are connected with the air source. The external control port of the pressure sequence valve is connected between the one-way throttle valve and the air cylinder. The travel reversing valve is installed at the end point where the piston rod of the opening and closing cylinder extends. The reversing valve and each Each door closing button and each door opening button are connected with the air source. The utility model adopts the pneumatic control type, when the door is closed, the bus door automatically opens when encountering obstacles, which plays the role of safety protection.
【技术实现步骤摘要】
一种公交车门的开关门防夹系统
本技术属于公交车
,尤其涉及一种公交车门的开关门防夹系统统。
技术介绍
随着我国国民经济的飞速增长、人民生活水平日益提高,私家车越来越多,交通拥堵已成为城市管理中的最难问题之一,各级政府都在提倡绿色出行和公共交通,公交车是城镇最重要的公共交通工具。公交车司机在开门和关门时,主要根据自己的观察判断出乘客是否已经完全上车和下车,然后按下相应的按钮开门或关门。但当公交车乘客比较多时,司机可能会观察不清楚乘客上下车的情况,如果乘客还在下车司机忽然按下关门按钮,把乘客强行推下车,会非常危险;现有的公交车开关门系统主要有电控和气控两大类,但主要是进行简单的开关门控制,不具有安全保护功能。因此设计一种具有安全保护功能的公交车开关门系统,必将产生良好的经济效益和社会效益。
技术实现思路
为了解决上述技术问题,本技术提供一种公交车门的开关门防夹系统统,本技术主要创新点是采用气控式,当关门时遇到障碍时(如乘客),公交车门自动打开,起到安全保护的作用。本技术是通过如下技术方案实现的,本技术提供一种公交车门的开关门防夹系统,包括开关门气缸,所述开关门气缸的左腔通过单向节流阀,右腔通过单向节流阀分别与换向阀连接,所述换向阀与气源连接;所述换向阀的左面控制口通过梭阀分别与司机用关门按钮和乘务员用关门按钮连接,所述司机用关门按钮和乘务员用关门按钮都与气源连接;所述换向阀的右面控制口通过梭阀分别与梭阀和双压阀连接,所述梭阀分别与司机用开门按钮和乘务员用开门按钮连接,司机用开门按钮和乘务员用 ...
【技术保护点】
1.一种公交车门的开关门防夹系统,其特征在于,包括开关门气缸(1),所述开关门气缸(1)的左腔通过单向节流阀(2),右腔通过单向节流阀(2-1)分别与换向阀(3)连接,所述换向阀(3)与气源(7)连接;所述换向阀(3)的左面控制口通过梭阀(4)分别与司机用关门按钮(5)和乘务员用关门按钮(6)连接,所述司机用关门按钮(5)和乘务员用关门按钮(6)都与气源(7)连接;所述换向阀(3)的右面控制口通过梭阀(4-1)分别与梭阀(4-2)和双压阀(11)连接,所述梭阀(4-2)分别与司机用开门按钮(8)和乘务员用开门按钮(9)连接,司机用开门按钮(8)和乘务员用开门按钮(9)都与气源(7)连接;所述双压阀(11)分别与行程换向阀(10)和压力顺序阀(12)连接,所述行程换向阀(10)和压力顺序阀(12)都与气源(7)连接,所述压力顺序阀(12)的外控口连接到单向节流阀(2)和气缸(1)之间,所述行程换向阀(10)安装在开关门气缸(1)的活塞杆伸出的终点位置。/n
【技术特征摘要】
1.一种公交车门的开关门防夹系统,其特征在于,包括开关门气缸(1),所述开关门气缸(1)的左腔通过单向节流阀(2),右腔通过单向节流阀(2-1)分别与换向阀(3)连接,所述换向阀(3)与气源(7)连接;所述换向阀(3)的左面控制口通过梭阀(4)分别与司机用关门按钮(5)和乘务员用关门按钮(6)连接,所述司机用关门按钮(5)和乘务员用关门按钮(6)都与气源(7)连接;所述换向阀(3)的右面控制口通过梭阀(4-1)分别与梭阀(4-2)和双压阀(11)连接,所述梭阀(4-2)分别与司机用开门按钮(8)和乘务员用开门按钮(9)连接,司机用开门按钮(8)和乘务员用开门按钮(9)都与气源(7)连接;所述双压阀(11)分别与行程换向阀(10)和压力顺序阀(12)连接,所述行程换向阀(10)和压力顺序阀(12)都与气源(7)连接,所述压力顺...
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