Balance weight set free fall emergency braking device, which can realize auto control load loss protection, when the wellhead end accidental loss of load, balance weight free fall.

平衡重设置自由落体紧急制动装置，可实现井口端意外失载后平衡重自由落体坠落不能人控，却能自控失载保护的万无一失。

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This device apportions braking action over all four wheels to prevent locking and ensure full control of the car under all conditions.

此设备摊派制动对所有四个车轮行动，以防止锁定，并确保在所有情况下对汽车的完全控制。

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This device is mainly composed of braking rails, a supported arm, a connected pole, hydraulic system and control system.

该装置主要由制动轨、支撑臂、连接杆、液压系统和控制系统所组成。

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