2 Tan Jambatan Kren

2 tan Jambatan Kren

 

The lifting mechanism of the 2 ton bridge crane hoist is composed of a reducer, a reel device, a conical motor and a hook, and is fixed on the trolley frame. Installed in the middle of the main machine, the wire rope wound on the drum lifts and lowers the heavy objects through the hook device and the fixed pulley.

 

 

Bila mereka bentuk a 2 tan jambatan kren, we must strive to meet the following requirements:
 

1. Kerjasama antara the whole crane and the factory building, as well as the cooperation between the trolley and the bridge frame must be appropriate.
 

The mutual cooperation between the trolley and the bridge frame terutamanya lies in: the gauge of the trolley (the horizontal distance between the center planes of the wheels) and the gauge of the trolley on the bridge should be the same;
 

 

The plane layout of the trolley should be compact and the height should be small, which can reduce the height of the crane accordingly, thereby reducing the height of the factory building.
 

2. The layout of the mechanism on the trolley and the coordination requirements between the parts in the same mechanism are appropriate.
 

The distance between the lifting mechanism and the trolley running mechanism should not be too small, otherwise it will be inconvenient to maintain, or the trolley frame will be difficult to design; but it should not be be too large, otherwise the trolley will not be compact.
 

3. Roda tekanan pengedaran daripada troli roda is required to be uniform.
 

Dan it is required to obtain the smallest size of wheels, axles and bearing boxes, and to make the main girder of the crane bridge bear a uniform load. Generally, the maximum wheel pressure should not out 20 percent of the average wheel pressure.
 

4. The mechanism on the trolley frame should cooperate properly with the trolley frame.
 

In terms of design principles, the mechanism should be given priority to, and trolleys should be used as much as possible to cooperate with the mechanism; meanwhile, the arrangement of the mechanism should also make the design and manufacture of the steel structure as convenient as possible.
 

Kerana the trolley frame is to place and support the lifting mechanism and the trolley running mechanism, the trolley frame should be designed according to the requirements of the lifting and running mechanism, but the layout of the mechanism should also match the small trolley frame without affecting the work of the mechanism. The frame is designed so that its structure is simple, reasonable and easy to manufacture.
 

5. Use standard components as much as possible to improve design and manufacturing efficiency and reduce production costs.
 

6. The design of each part of the trolley should consider the convenience of manufacture, installation, maintenance and overhaul, and ensure that the adjacent parts do not need to be moved when the parts are dismantled and repaired as much as possible.

 

The reduction mechanism adopts a three-stage external gear helical gear transmission mechanism. The gears and gear shafts are made of high-strength alloy steel and have been heat-treated to achieve high strength and good wear resistance.

 

The transmission shaft is supported by rolling bearings, and the gears are sealed in the reduction box. lubricating oil inside.

 

The hoisting motor adopts the combination of motor and brake and the conical rotor brake motor, and the motor works according to the principle of brake rotor. When the motor is powered on, the conical rotor moves axially, the brake is disengaged, and the motor runs normally. The brake wheel also acts as a fan wheel, the motor has good heat dissipation, and the brake ring is made of getah resin. Baik pakai rintangan, reliable brek, easy adjustment and easy replacement.

 

The lifting motor can also adopt a two-speed mechanism, which is divided into two types: backpack type and axis type.

 

 

Kenapa adalah the requirements for lifting machinery so strict?
 

1. The bridge crane usually has a huge structure and a relatively complex mechanism. During the operation, several movements in different directions are often operated at the same time, which is technically difficult.

 

2. There are many kinds of heavy objects that can be lifted, and the load is changing. Some heavy objects weigh hundreds of tons, are large and irregular, and there are also loose particles, hot melt, flammable and explosive dangerous goods, etc., which make the lifting process complicated and dangerous.
 

3. It needs to operate in a larger range, and the space for activities is larger. Once an accident occurs, the affected area will be larger.
 

4. Some hoisting machinery (only referring to construction elevators, etc.) need to directly carry people to do lifting movements, and their reliability directly affects personal safety.
 

5. There are many exposed moving parts, and they are often in direct contact with operators, so there are many potential accidental risk factors.
 

6. The operating environment is complex, such as involving enterprises, ports, construction sites, etc., involving environmental risk factors such as high temperature, high pressure, flammability and explosion, which pose a threat to equipment and operators.
 

7. Many people are often required to cooperate in the operation, and the requirements for the commander, operator and lifting worker are relatif high.
 

Menurut kepada relevan statistik, the number of work-related deaths in my country's annual heavy injury accidents accounts about 15 percent of the total number of work-related deaths in all industrial enterprises. In order to ensure the safe operation of hoisting machinery, the state classifies it as special equipment for management, and many enterprises regard the management of hoisting equipment as a key link in safe production.

 

Mengangkat Berat (t)	1				2				3				5				10				16				Tersuai
	7.5	10	15	18	8	13	18	27	7.5	12	18	23	8	12	15	18	8	12	15	20	12	19	25	28	Tersuai
(m/min)	Tanah 20								Tanah 20								Tanah20				Tanah 20				Tersuai
Mengangkat Tinggi(m) Customized	Tersuai
Working Class	A4 atau Tersuai
Elektrik Semasa

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