限位行程开关，起到安全和限位作用。
采用近接开关及行程开关控制，信号准确可靠；
Proximity switch and limit switch are adopted to obtain accurate and reliable signals.
主缸的速度换接与安全行程限制通过行程开关来控制；
Master cylinder for the speed of access restrictions and security through the trip exchanging to control switches.
轻踏脚踏开关，看所接行程开关上及行程开关下能否准确。
Treads the foot switch lightly looked that meets on under the limit switch and the limit switch whether correct.
发生阻塞时，因为物料堆积，顶开防堵门，同的经过行程开关堵截电源。
Jam occurs, because the material accumulation, open top anti blocking door, with the stroke switch after dump.
行程及走线机构：跑车带动吹灰枪运动时，由行程开关控制吹灰器行程。
Travel switch and its wiring system: When carriage drives the lance tube moving, the travel of Soot-blower is controlled by travel switch.
各转辙机上装有行程开关，以控制拉杆的行程，进而控制导曲轨的形状。
Each switch machine is provided with a travel switch for controlling the travel range of a pull rod, and accordingly, the shape of a guide curve rail can be controlled.
装版顶尖用电动一次性装定，长度不用手调，装版时免调整行程开关位置。
Mounting of a plate becomes very easily in this machine with an electric motor. It is not necessary to adjust the plate length or the position of the progressing switch.
介绍了龙门刨床主传动系统行程开关的不足及改进方案、工作原理、效果等。
The paper introduces the improved methods on the main transmission system switch of gantry planer.
第二控制回路由互相串联的限重开关、安全门旁行程开关和中间继电器组成。
The second control return circuit is composed with a mutually connected weight limit switch, security door by-pass switch and a middle relay.
阀门的启闭位置由行程开关控制，且阀板上设有限位挡块以保证阀板的启闭位置。
There is limit block on the valve disc to ensure the open-close position , which is controlled by the stroke switch.
系统主要由主控制盒、电机控制盒、显示盒、步进电机、接近开关、行程开关等相关部件组成。
Mainly by the main control box, the electrical control box, show boxes, stepper motor, close to the switch, Switching itinerary, and other related component parts.
特点：数字等压力控制器调压，设有过压，欠压保护装置，行程开关控制上下位置。
Features: figures etc. pressure control device adjusts pressure, with over pressure and under pressure protection devices, travel switch controls up and down positions.
该设计提供了可更换衬里和鞍前衬里，更换鞍行程开关简单，访问所有驱动器组件方便。
The design offers replaceable saddle liners and saddle front liners, easily replaceable saddle trip switches, and easy access to all drive components.
把行程开关摇臂螺母松开，将摇臂往前调即可，如多次调整无效，请检查开关是否损坏。
Then loose the rocker nut of journey switch, and adjust the rocker to front, if after adjusted for many times still not available, then please check the journey switch whether was damaged or not.
每台机器均配有保护行程开关，为维修、保养增加一份安全系数。且装有热过载继电器，保护电机。
Every machine is equipped with protect travel switch in order to increase safety coefficient for repairing and maintenance. It also has thermal overload relays to protect the motor.
使用继电器、接触器、按钮、空气开关、行程开关等低压电器构成的控制电路称为继电接触控制电路。
Use relays, contactor, button, air switch and travel switch etc low-voltage constitute control circuit called relay contact control circuit.
在距离钢筋出料口一定距离的延长线上设有一个接触式行程开关，行程开关与离合器电磁铁之间连接有导线。
An extension line with a certain distance to the steel bar discharge hole is provided with a contact travel switch. A wire is connected between the travel switch and a clutch electromagnet.
可换向进料导向机构和通过行程开关自动改变电机的转向，从而实现转子正反向工作，大大延长易损件的使用寿命；
Reversible rotor extends a much longer service life of wearing parts due to the reversible feed guiding mechanism and the automatic changing of motor rotation direction by dint of limited switches.
目前，国内现有的试验压机、热压设备多为手动操作，或采用时间继电器、行程开关等作为控制元件实现一定程度的自动操作。
At present most of the existing domestic testing press, hot press are all manually operated, or use time relays, switches, etc. as control elements.
就煤矿井下现用的隔爆按钮以及行程开关、限位开关、打点器、拉线开关、井口开关等进行了统计、分析，针对使用中出现的问题提出了改进措施。
This article has made statistic and analyses on many types of flameproof button and switches used in coalmine, such as travel switch, limit switch, pull switch, and so on.
就煤矿井下现用的隔爆按钮以及行程开关、限位开关、打点器、拉线开关、井口开关等进行了统计、分析，针对使用中出现的问题提出了改进措施。
This article has made statistic and analyses on many types of flameproof button and switches used in coalmine, such as travel switch, limit switch, pull switch, and so on.
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