An upper cover opening and closing device with protection function and its impact crusher

Abstract

The invention relates to an upper cover opening device with the protection function and an impact crusher provided with the upper cover opening device. The upper cover opening device comprises a hydraulic cylinder, a lead screw device and a limiting stopper. The two ends of the hydraulic cylinder are connected to the upper cover opening device body and an upper cover respectively, the hydraulic cylinder comprises a piston rod and a cylinder body, the fixed end of the limiting stopper is connected to the piston rod, the limiting end of the limiting stopper is located above the cylinder body, the lead screw device is located between the hydraulic cylinder and the limiting stopper and comprises a polished rod, a nut and a screw, a first end of the polished rod is connected with the cylinder body, a second end of the polished rod is connected with a first end of the nut, a second end of the nut is connected with a first end of the screw, and a second end of the screw is connected with the piston rod. The upper cover opening device is mainly used for opening the upper cover of the impact crusher and bringing convenience to opening of the upper cover. When the interior of the impact crusher is maintained, the upper cover opening device can shorten maintenance time, make maintenance work easy and convenient and save production cost at the same time.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an upper cover opening device with a protective function and an impact crusher including the upper cover opening device. Background technique [0002] The impact crusher is a crushing machine that uses impact energy to crush materials. When the impact crusher is working, driven by the motor, the rotor rotates at a high speed. When the material enters the blow bar area, it collides with the blow bar on the rotor. Crushed, then thrown to the impact device for re-crushing, and then bounced from the counter-attack liner to the blow bar area for re-crushing, this process is repeated until the material is crushed to the required particle size and discharged from the discharge port; Adjusting the distance between the impact liner and the rotor can achieve the purpose of changing the material discharge particle size and material shape. The screw with reverse thread means that the th...

AI Technical Summary

Problems solved by technology

[0005] There are many disadvantages in the way of opening and closing the upper cover through the screw. The screw is the power source of the upper cover. Only when the screw on both sides of the upper cover moves synchronously can the normal opening and closing of the upper cover be realized; if the screw on both sides cannot be synchronized Action will cause deformation of the upper cover, and even damage the upper cover; the process of turning the screw is manual, and in theory, the screw on both sides needs two people to turn the screw at the same speed to open and close the upper cover normally. Cover, this process is time-consuming and laborious, increases labor intensity, and reduces labor efficiency; when it is necessary to open and close the upper cover, it is difficult to ensure that the force generated by the screw on both sides of the upper cover is consistent, and it is easy to cause damage to the upper cover. and the inefficiency of closing the lid

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