CDH type of stop buffer 
 Many of the railway end of the line, some of which end of the line end of the complex terrain, close to houses, offices, and some next to the road, plant, or wall, or even deep groove and the cliff. So at the end of the line protection is to ensure the safe transport of important issues railway. CDH-type cars blocked in the DC-92A based on the type of cars blocked the newly developed products, is installed in the railway end of the line to prevent a runaway vehicle security equipment. 
 The main features of the product: 
 1, the design of rational structure, safe and reliable, suitable for different type of rail, sleepers the end of the line terminal. 
 2, braking capacity, has the advantage of easing the impact of the product with elastic damping device, the formation of three runaway vehicles tic to stop, prevent or reduce the runaway car crash blocked the accident loss. 
 3, no external energy, does not require manual control and a separate installed base and other associated equipment, installed directly in the line of the basic track. 
 4, simple installation, less labor, time fast, easy maintenance and repair. 
 Second, the main structure and working principle 
 CDH-type cars blocked mainly by the main frame, the damper of two parts. Cars blocked in the resting state, by the spring plate, spring seat, pressurization bolts and other parts of elastic compression damping device consisting of cars blocked the track and the brake line to the pressure of the formation of the basic tracks in order to increase the pumping power of the vehicle, cars blocked force of the impact on passing through the arm rail brake, the brake rail and the basic tracks to stop the vehicle sliding friction generated by the main frame and has two pairs of impact damper, the two sub-levels on the damper to stop to prevent or reduce rolling over bumper damage caused by the accident. 
 Main technical parameters 
 This product is reference to international standards (ISO), the national standard (GB), the Ministry of Railways Standard (TB) design. 
 The level of resistance of the main structure of not less than 58KN 
 Sufficient sliding distance, the main junction 
 Configuration allows the maximum impact speed 15km / h 
 The level of resistance of each damper is not less than 46KN 
 Bearing center away from the track buffer 850 ± 20mm high surface 
 Damper of the main frame (sliding direction) spacing of 100 ± 2mm 
 Two dampers 80 ± 2mm pitch 
 Focuses on a variety of different speed when the car sliding block cars from sliding away from the light reference table