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The working intensity of the small jib crane is light. The crane is composed of a column, a slewing arm rotation drive device and an electric hoist. The lower end of the column is fixed on the concrete foundation through anchor bolts. The cycloid pinwheel reduction device drives the cantilever rotation. The electric hoist runs left and right on the cantilever I-beam in a straight line and lifts heavy objects. The crane jib is a hollow steel structure with light weight, large span, large lifting capacity, economy and durability. The built-in traveling mechanism adopts special engineering plastic running wheels with rolling bearings, which have low friction and brisk walking; the small structural size is especially helpful for increasing the hook stroke.

Common knowledge on the maintenance of small cantilever crane hooks

The hook is an important part of a small cantilever crane, and it is also a component that is easily worn. Therefore, safety inspection and maintenance should be carried out frequently during use to ensure the normal and safe use of small cantilever cranes.

How to maintain and maintain the hook of a small cantilever crane:

1. It should be ensured that the surface of the hook should be smooth and clean, without defects such as cracks, sharp angles, burrs, and peeling;

2. The inside of the hook must not have defects such as cracks, white spots, inclusions that affect its safe use;

3. Welding repair is not allowed for defects on the crane accessories hook;

4. The wear of dangerous sections shall not reach 10% of the original size;

5. The opening should comply with the provisions of 5.2 in GB10051;

6. The torsional deformation of the crane accessories hook, that is, the torsion angle of the hook body, shall not exceed 10. ;

7. The dangerous section or the handle of the hook must not be plastically deformed;

8. The threads of the hook must not be corroded. Small cantilever crane, balance crane, lifting freight elevator

Use and maintenance of electric hoist for small cantilever crane accessories:

1. A newly installed electric hoist or an electric hoist installed after disassembly and inspection should first be tested empty for several times. However, do not turn on the power before the installation is completed.

2. Before normal use, a static load test should be carried out at 125% of the rated load, lifted about 100 mm from the ground, for 10 minutes to check whether it is normal.

3. The dynamic load test is a repeated lifting and left-right movement test based on the rated load weight. After the test, check whether the mechanical transmission part, electrical part and connecting part are normal and reliable.

4. During use, it is absolutely prohibited to use it in an environment that is not allowed, or when the rated load and rated closing times per hour (120 times) are exceeded.

5. During installation, commissioning and maintenance, it is necessary to strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance from the hook shell to the drum shell must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook is lowered to the lower limit position, the safety circle of the wire rope on the drum should be ensured. The effective safety circle must be more than 2 circles.

6. It is not allowed to press two flashlight door buttons at the same time to make the electric hoist move in opposite directions.

7. After the work is completed, the main switch of the power supply must be opened and the power supply must be cut off.

8. The electric hoist should be operated by a dedicated person, and the operator should fully understand the safe operating procedures. It is strictly prohibited to pull or lift at an angle.

9. During use, specialized personnel must regularly inspect the electric hoist, take timely measures if any faults are found, and record them carefully.

As my country’s power, petrochemical, steel, transportation and other infrastructure construction enters a period of rapid development, the market for small cantilever cranes has expanded rapidly, and the general quantitative development trend of cantilever cranes has become an unchangeable fact. In order to reduce production costs and save manpower and material resources, the general quantitative demand for cantilever cranes is gradually expanding, and the lifting requirements for small cantilever cranes are also getting higher and higher. As the requirements for lifting speed become higher and higher, the requirements for energy consumption control and crane performance are getting higher and higher. As an important part of the automated production process, simple operation, high safety, reliable performance and easy maintenance are the basic requirements for cranes. In addition, cost-effective lifting machinery will become more marketable in the future.

To this end, special cranes that meet various work requirements continue to be invested in research and development and are widely used. There are specialized cranes for nuclear power, paper making and waste disposal. Cranes with special performance can also meet various working environments such as anti-corrosion, explosion-proof, and insulated electric hoists. The performance of traditional railway and ship cranes is also constantly improving, and their adaptability to the environment is also constantly improving.

It is conceivable that with the continuous development and acceleration of urbanization across the country, various engineering constructions in railway transportation, construction, energy, water conservancy and other aspects have also provided broader development prospects for the development of China's hoisting machinery industry. In the next 3 to 5 years, China's crane market will become more intense, the spectrum of products from 100 tons to 10,000 tons will be more intensive, and electric hoist technology will become more mature. People will gradually break through the initial success of Chinese enterprises. "The biggest surprise in the world is to calm down and become more deeply involved in engineering applications and user needs.

Faced with the good development momentum of China's lifting machinery industry, we should pay attention to mechanical technology, study and propose measures for the sustainable development of lifting equipment. Although China has now entered the high-end, it must innovate independently, establish its own brand, promote strategic development, use innovation to lead development, do a good job in realizing the long-term development of the industry, and establish and strengthen awareness of intellectual property rights.

The market competition of China's gantry cranes is mainly through price war. The price war is relatively cruel and relatively low. The end result is that profits have been declining. As a result, product quality declined, the level of the entire industry declined, and the eventual collapse was the main reason for this situation. Each product is indistinguishable and cannot be compared. Personality is a more prominent highlight.

The working intensity of the small jib crane is light. The crane is composed of a column, a slewing arm rotation drive device and an electric hoist. The lower end of the column is fixed on the concrete foundation through anchor bolts. The cycloid pinwheel reduction device drives the cantilever rotation. The electric hoist runs left and right on the cantilever I-beam in a straight line and lifts heavy objects. The crane jib is a hollow steel structure with light weight, large span, large lifting capacity, economy and durability. The built-in traveling mechanism adopts special engineering plastic running wheels with rolling bearings, which have low friction and brisk walking; the small structural size is especially helpful for increasing the hook stroke.

Common knowledge on the maintenance of small cantilever crane hooks

The hook is an important part of a small cantilever crane, and it is also a component that is easily worn. Therefore, safety inspection and maintenance should be carried out frequently during use to ensure the normal and safe use of small cantilever cranes.

How to maintain and maintain the hook of a small cantilever crane:

1. It should be ensured that the surface of the hook should be smooth and clean, without defects such as cracks, sharp angles, burrs, and peeling;

2. The inside of the hook must not have defects such as cracks, white spots, inclusions that affect its safe use;

3. Welding repair is not allowed for defects on the crane accessories hook;

4. The wear of dangerous sections shall not reach 10% of the original size;

5. The opening should comply with the provisions of 5.2 in GB10051;

6. The torsional deformation of the crane accessories hook, that is, the torsion angle of the hook body, shall not exceed 10. ;

7. The dangerous section or the handle of the hook must not be plastically deformed;

8. The threads of the hook must not be corroded. Small cantilever crane, balance crane, lifting freight elevator

Use and maintenance of electric hoist for small cantilever crane accessories:

1. A newly installed electric hoist or an electric hoist installed after disassembly and inspection should first be tested empty for several times. However, do not turn on the power before the installation is completed.

2. Before normal use, a static load test should be carried out at 125% of the rated load, lifted about 100 mm from the ground, for 10 minutes to check whether it is normal.

3. The dynamic load test is a repeated lifting and left-right movement test based on the rated load weight. After the test, check whether the mechanical transmission part, electrical part and connecting part are normal and reliable.

4. During use, it is absolutely prohibited to use it in an environment that is not allowed, or when the rated load and rated closing times per hour (120 times) are exceeded.

5. During installation, commissioning and maintenance, it is necessary to strictly check whether the limit device is flexible and reliable. When the hook is raised to the upper limit position, the distance from the hook shell to the drum shell must be greater than 50mm (10t, 16t, 20t must be greater than 120mm). When the hook is lowered to the lower limit position, the safety circle of the wire rope on the drum should be ensured. The effective safety circle must be more than 2 circles.

6. It is not allowed to press two flashlight door buttons at the same time to make the electric hoist move in opposite directions.

7. After the work is completed, the main switch of the power supply must be opened and the power supply must be cut off.

8. The electric hoist should be operated by a dedicated person, and the operator should fully understand the safe operating procedures. It is strictly prohibited to pull or lift at an angle.

9. During use, specialized personnel must regularly inspect the electric hoist, take timely measures if any faults are found, and record them carefully.

As my country’s power, petrochemical, steel, transportation and other infrastructure construction enters a period of rapid development, the market for small cantilever cranes has expanded rapidly, and the general quantitative development trend of cantilever cranes has become an unchangeable fact. In order to reduce production costs and save manpower and material resources, the general quantitative demand for cantilever cranes is gradually expanding, and the lifting requirements for small cantilever cranes are also getting higher and higher. As the requirements for lifting speed become higher and higher, the requirements for energy consumption control and crane performance are getting higher and higher. As an important part of the automated production process, simple operation, high safety, reliable performance and easy maintenance are the basic requirements for cranes. In addition, cost-effective lifting machinery will become more marketable in the future.

To this end, special cranes that meet various work requirements continue to be invested in research and development and are widely used. There are specialized cranes for nuclear power, paper making and waste disposal. Cranes with special performance can also meet various working environments such as anti-corrosion, explosion-proof, and insulated electric hoists. The performance of traditional railway and ship cranes is also constantly improving, and their adaptability to the environment is also constantly improving.

It is conceivable that with the continuous development and acceleration of urbanization across the country, various engineering constructions in railway transportation, construction, energy, water conservancy and other aspects have also provided broader development prospects for the development of China's hoisting machinery industry. In the next 3 to 5 years, China's crane market will become more intense, the spectrum of products from 100 tons to 10,000 tons will be more intensive, and electric hoist technology will become more mature. People will gradually break through the initial success of Chinese enterprises. "The biggest surprise in the world is to calm down and become more deeply involved in engineering applications and user needs.

Faced with the good development momentum of China's lifting machinery industry, we should pay attention to mechanical technology, study and propose measures for the sustainable development of lifting equipment. Although China has now entered the high-end, it must innovate independently, establish its own brand, promote strategic development, use innovation to lead development, do a good job in realizing the long-term development of the industry, and establish and strengthen awareness of intellectual property rights.

The market competition of China's gantry cranes is mainly through price war. The price war is relatively cruel and relatively low. The end result is that profits have been declining. As a result, product quality declined, the level of the entire industry declined, and the eventual collapse was the main reason for this situation. Each product is indistinguishable and cannot be compared. Personality is a more prominent highlight.