chain of the conveyor chain

The structure type and quality inspection method of the transmission chain of the conveyor chain

【Abstract】Conveying chain can also be called transmission chain. The structure of Muxiang transmission chain is composed of inner link and outer link. It is composed of inner link plate, outer link plate, pin shaft, sleeve and roller. The quality of the chain depends on the pin shaft and The quality of the sleeve.

1. The structure of the conveyor chain

Conveyor chain can also be called transmission chain. The structure of the transmission chain is composed of inner chain links and outer chain links. It is composed of five small parts: inner chain plate, outer chain plate, pin, sleeve and roller. The quality of the chain depends on the pin and sleeve. the quality of. …

Second, the type of transmission chain

There are many types of transmission chains, mainly including the following short-pitch roller chains, double-pitch roller chains, bushing chains, curved plate roller chains for heavy loads, toothed chains, continuously variable transmission chains, long Pitch conveyor chain, short pitch roller conveyor chain, double pitch roller conveyor chain, double-speed conveyor chain, plate chain. To

1. Stainless steel chain

The parts are made of stainless steel, which is suitable for use in the food industry and occasions that are susceptible to corrosion by chemicals and drugs. It can also be used in high and low temperature applications. To

2. Nickel-plated chain, galvanized chain, chrome-plated chain

All chains made of carbon steel materials can be surface treated. The surface of the parts is nickel-plated, zinc-plated or chrome-plated. It can be used in outdoor rain erosion and other occasions, but it cannot prevent the corrosion of strong chemical liquids. To

3. Self-lubricating chain

The parts are made of a kind of sintered metal impregnated with lubricating oil. The chain has excellent wear resistance and corrosion resistance, does not require maintenance (maintenance-free), and has the characteristics of long service life. It is widely used in occasions with high stress, wear-resistant requirements, and cannot be maintained frequently, such as automated production lines in the food industry, high-end bicycle racing, and low-maintenance high-precision transmission machinery. To

4. O-ring chain

O-rings for sealing are installed between the inner and outer chain plates of the roller chain to prevent dust from entering and grease from flowing out of the hinge. The chain is strictly pre-lubricated. Because the chain has super strong parts and reliable lubrication, it can be used in open transmission such as motorcycles. To

5. Rubber chain

This type of chain is based on the A and B series chain with a U-shaped attachment plate on the outer link, and rubber (such as natural rubber NR, silicone rubber SI, etc.) on the attachment plate can increase the wear capacity, reduce noise, and increase Anti-vibration capability, used for conveying. To

6. Sharp tooth chain

Widely used in the wood industry, such as wood feeding and output, cutting, conveying table transportation, etc.

7. Agricultural machinery chain

Suitable for field machinery such as walking tractors, threshers, combine harvesters, etc. This kind of chain requires low cost but can withstand impact and wear resistance. In addition, the chain should be greased or automatically lubricated. To

8. High-strength chain

The high-strength chain is a special roller chain. By improving the shape of the chain plate, thickening the chain plate, fine-blanking the chain plate hole, and heat treatment strengthening of the pin shaft, the tensile strength can be increased by 15 to 30%, and it has good impact performance and fatigue. performance. To

9. Side bending chain

The side bending chain has a large hinge gap and a chain plate gap, so it has greater flexibility and can be used for bending transmission and conveying. To

10. Escalator chain

Used for escalators and automatic pedestrian passages. Due to the long working hours of the escalator, the safety requirements are high and the operation is stable. Therefore, it is required that this step chain must reach the specified minimum ultimate tensile load, the total length deviation of the two paired chains, and the step distance deviation. To

11. Motorcycle chain

According to the definition of the use of the chain, from the structure of the chain, there are two types of roller chain and bushing chain. From the part used on the motorcycle, it can be divided into two types: inside the engine and outside the engine. It is used in the engine. Most of the chains are bush chain structures, and the chains used outside the engine are the transmission chains used to drive the rear wheels, and most of them use roller chains. 12. Agricultural gripping conveyor chain

It is suitable for walking wheat and rice harvesters, stationary motorized rice and wheat threshers, and semi-feeding combine harvesters. Hollow pin chain is used for conveying, single pitch, double pitch and long pitch are all available. The attachment or crossbar can be inserted into any link of the chain without disassembling the chain. To

13. Timing chain

Used for transmission between the engine crankshaft and camshaft. Because the engine piston stroke and exhaust time have strict requirements, the chain for this purpose is called a timing chain. Both roller chain and toothed chain can be used as timing chain. The timing chain is mainly used for the transmission of engines (diesel or gasoline engines) of automobiles, motorcycles and ships. In order to reduce the weight of the engine, the installation gap between the chain and the engine is very small, and some do not even have a tensioning device. Therefore, in addition to the high precision requirements for the timing chain, the requirements for wear resistance are also quite high. Limitations of the chain As a common transmission device, the chain is designed with a hyperbolic arc to reduce friction. It is used in places where the power is relatively large and the running speed is relatively slow. It is obviously superior to belt transmission. For example, tanks, pneumatic compressors, etc., but the transmission speed cannot be too fast, because the flexibility of the chain is not as good as the belt transmission.

Three, the measurement method of the conveyor chain

The accuracy of the conveyor chain should be measured according to the following requirements

1. The chain is cleaned before measurement

2. Enclose the tested chain on the two sprockets, and the upper and lower sides of the tested chain should be supported.

3. The chain before the measurement should stay for 1 min under the condition of applying one-third of the minimum ultimate tensile load

4. When measuring, apply the specified measuring load on the chain to make the upper and lower chains tensioned. The chain and the sprocket should ensure normal meshing.