The easy deviation of the belt conveyor during operation is a common problem in the use of users, and these problems are easy to lead to belt fracture and other problems, and even affect the safety of the operator. Therefore, these protective devices must be installed on the belt conveyor.

有兩種常見的避免皮帶輸送機偏轉(zhuǎn)和滑動的設備：誤差開關和滑動開關主要用于闡明誤差開關的挑選和裝置，便利用戶理解和挑選。

There are two common devices to avoid deflection and sliding of belt conveyor: error switch and sliding switch, which are mainly used to clarify the selection and device of error switch, so as to facilitate users' understanding and selection.

誤差開關是一種保護設備，用于檢測帶式輸送機運行過程中輸送帶的誤差程度和報警。當皮帶嚴重偏離時，它還用于主動觸發(fā)緊急中止;誤差開關處于一定間隔(約50m)。它固定裝置在皮帶輸送機兩邊的支架上。

The error switch is a kind of protection equipment, which is used to detect the error degree and alarm of the conveyor belt during the operation of the belt conveyor. When the belt deviates seriously, it is also used to actively trigger emergency stop; The error switch is at a certain interval (about 50m). It is fixed on the supports on both sides of the belt conveyor.

挑選準則和注意事項：

Selection criteria and precautions:

1.測驗挑選二級或多級誤差開關來檢測皮帶的不同誤差程度，并為控制系統(tǒng)提供更多信息。

1. Test and select two-level or multi-level error switches to detect different error degrees of the belt and provide more information for the control system.

2.優(yōu)先挑選具有動作記憶和動作狀況指示的開關本體的產(chǎn)品;由于皮帶輸送機是動態(tài)的，這個功能能夠很容易地確認皮帶誤差的具體位置，分析誤差的原因，便于設備的調(diào)試和保護;

2. Give priority to products with switch body with action memory and action status indication; Because the belt conveyor is dynamic, this function can easily confirm the specific position of the belt error and analyze the causes of the error, which is convenient for equipment commissioning and protection;

3.可在條件下挑選非觸摸式誤差開關;非觸摸式誤差開關使光電接近開關替換滾輪，檢測皮帶是否偏轉(zhuǎn);長處是壽命長，保護便利，缺點是昂貴。

3. Non touch error switch can be selected under conditions; The non touch error switch enables the photoelectric proximity switch to replace the roller to detect whether the belt is deflected; The advantages are long service life and convenient protection, while the disadvantages are high price.