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Three transmission modes of drum shot blasting machine

Author: admin Source: This station Time: 10:05, September 9, 2020

Drum style Shot blasting machine Three transmission modes

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Roller Shot blasting cleaning machine It is suitable for cleaning all kinds of castings and forgings which are not afraid of collision and scratch. Shot blasting machine Almost all steel castings, gray castings, Maanshan Steel Castings, ductile iron castings and so on should be shot blasted. This is not only to remove oxide scale and sand sticking on the surface of castings, but also an indispensable preparation process before casting quality inspection. For example, before NDT of large-scale gas turbine casing, shot peening must be carried out strictly to ensure the reliability of flaw detection results. Shot blasting cleaning machine It is that the kinetic energy of the shot blasting machine is transmitted by the motor reducer. The supporting wheel drives the drum of the shot blasting machine, and the drum rotates stably at the speed of 3R / min, so that the parts in the drum of the shot blasting machine can be gently rolled, and the parts can be impacted and scraped by shot blasting at different angles, so as to not only remove the rust, sand and dirt on the surface of the workpiece, but also improve the shot blasting machine The internal stress of the workpiece can improve the surface quality of the workpiece, achieve the purpose of cleaning and strengthening, and improve the fatigue strength of the workpiece. It is an ideal equipment for cleaning residual sand scale and oxide scale on the surface of workpieces in small heat treatment workshop. It is mainly composed of drum, separator, shot blasting machine, elevator, reducer, etc. The shot blasting cleaning machine is the kinetic energy transmission of the shot blasting machine through the motor reducer. The supporting wheel drives the drum of the shot blasting machine, and the drum rotates stably at the speed of 3R / min, so that the parts in the drum body of the shot blasting machine can be gently rolled, and the parts can be impacted and scraped by shot blasting at different angles. Thus, not only can the rust, sand and dirt on the surface of the workpiece be removed, but also the shot blasting machine It can also improve the internal stress of the workpiece, improve the surface quality of the workpiece, achieve the purpose of cleaning and strengthening, and improve the fatigue strength of the workpiece. The main purpose of the shot blasting machine is to use the high-speed casting roller to clean the workpiece. There are three kinds of transmission modes of drum shot blasting cleaning machine: gear drive, belt drive and chain drive. Today, what is the difference between the three ways of communication introduced in the small series?

gear drive

The main advantages of the gear transmission device are: 1) instantaneous transmission, smooth processing rate, constant, accurate and reliable transmission, which can be transmitted to any space movement and power between the two shafts; 2) it is suitable for the power and speed of very small values close to zero to tens of thousands of kilowatts in a wide range, and the power is from very low circumferential speed / s of 300m; ③ High transmission efficiency, = 0.92? 0.98, in the traditional mechanical transmission, the transmission efficiency is higher; ④ reliable, long service life; small external size, compact structure.

The main disadvantages of gear transmission: the manufacturing and installation accuracy can be higher, and special technical equipment is required to design and manufacture, and the cost is relatively high, so it is not suitable for the transmission between two shafts in a long distance.

The basic requirements to be met by the gear transmission device are: 1) the ratio constant of instantaneous transmission, impact, vibration and noise is small to ensure good smoothness and high transmission precision; 2) the high strength tooth, wear resistance and load capacity of the wheel on the premise of small size and light weight, so as to realize the required working life.

Belt drive

The main technical advantages of belt transmission are as follows: 1) buffering and vibration absorption, stable transmission system and low noise; 2) belt transmission is driven by friction force, which can prevent equipment damage and other related parts; 3) it is suitable for occasions with large center moment of two shafts; 4) simple structure design, safe and convenient manufacturing, installation and maintenance, The cost is low.

The disadvantages of belt transmission are: 1. The accurate transmission ratio can not be guaranteed; 2. Large pulling force is required to increase the stress on shaft and bearing; 3) the overall size of the transmission device is large and not compact enough; 4) the belt service life is short and the transmission efficiency is low.

In view of the above characteristics, the belt drive is mainly suitable for: 1. It is mainly used for the first stage transmission of prime mover output when the speed is high. Two small and medium power transmission, usually no more than 50 kW. The maximum transmission ratio is less than 3 and less than 10. The transmission ratio does not need to be very precise.

Chain drive

Chain drive and belt drive with gear drive have some advantages: no elastic chain drive sliding and sliding, keeping accurate average transmission ratio; transmitting more compact size; no small load acting on the shaft with large tension; bearing capacity; high efficiency (= 0.95? 0.98). At the same time, the chain drive can absorb the impact and vibration, with simple structure, low processing cost and low installation accuracy. It is suitable for the transmission of a larger distance from the center, and can operate in a higher temperature, humidity, heavy oil and other harsh environment.

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