First of all, we should know what the jaw crusher safety devices include, jaw crusher safety devices are pided into: mechanical insurance, hydraulic insurance, electronic safety devices, etc.
1. Mechanical safety device: as the safety device of jaw crusher, the thrust plate has the advantages of simple structure and low cost, which is suitable for any type of driving mode. However, this device is disposable and must be replaced once damaged. It is very difficult to operate, time-consuming and laborious, which reduces the production efficiency. Moreover, the thrust plate is generally cast in line and installed directly without mechanical processing Due to the influence of casting error, process and material, the protection point with thrust plate as the safety part has a lot of discreteness. Jaw crusher breaks the thrust plate under normal load, and falls into the crusher with non broken materials or the machine is overloaded seriously, and even the frame cracks.
But the mechanical safety device always has its own shortcomings. In order to overcome the shortcomings of the mechanical safety device, the hydraulic simple swing jaw crusher has emerged. The characteristic of this jaw crusher is the hydraulic connecting rod device, that is to transfer power. When the crusher falls into non broken objects or the machine is seriously overloaded, the oil pressure of the hydraulic system will rise accordingly, if it rises to the combination valve When the high-pressure relief valve sets the pressure, the high-pressure relief valve overflows, so that the connecting rod cylinder and the piston are separated, and the movable jaw stops swinging, thus playing a safety role.
2. Hydraulic safety: in order to overcome the jump of machine protection along with the device, the pressure valve connected jaw crusher appeared. This kind of jaw crusher is characterized by the use of the Hong Kong Calendar connecting rod assembly, which is the first time for the later generations. It is also used as a deep suction device for the crusher. When the crusher enters into the non crushed material or the machine is seriously overloaded, the oil pressure of the short pressure system will increase with 2, and will rise to the set pressure of the high pressure relief valve in the combination valve, and the high pressure overflow network will overflow to separate the guide piston of the connecting rod cylinder.
3.Electronic insurance: with the continuous development of production and technology, especially the widely used motor as the driving force of jaw crusher, this creates conditions for the electronization of jaw crusher safety device. When the crusher is seriously overloaded, the motor has excessive current. The sensor samples and sends out the over-current signal, which is sent to the signal analysis and comparison device, which will send out instructions to protect the crusher.
As a supplier with nearly 30 years' manufacturing, Shuguang Heavy Machinery also produces and sells hammer crushers, impact crushers, vertical shaft crushers, cone crushers, compound crushers, Raymond mills, high pressure mills. Powder machine, vertical mill, ultra-fine grinding machine, ball mill, double-shaft shredder and other heavy equipment crusher. Feel free to contact us for more details.
Factory Address: Longjiang West Road, Shangjie District, Zhengzhou City
Contact number: +86-371-67666660 676667
Mobile phone: 0086 13523465141
After-sales Service Department: 0371-67666667
