Electric Self Raising Tower Crane Lifting Capacity

Electric Self Raising Tower Crane Lifting Capacity

>>>Introduction

Tower crane has a horizontal jib frame, a jib-trolley radius-changing mechanism and a hydraulic self-raising mechanism.  It is original in design, reliable in operation and satisfactory in shape.  Equipped with all necessary safety devices, these cranes show a good speed-control capacity, satisfactory operating stability and high work efficiency.
Top kits tower crane is widely used in infrastructure construction ,high-speed rail,oil fields,large ports,nuclear power,wind power and other construction fields.



>>>Feature
1.Suitable for all kinds of construction project and can work under all kinds of work condition.
 2.It has high working speed, good speed-adjusting performance, steady operation and high  efficiency.
 3.The crane has complete set of safety devices, which can guarantee the safe and high efficienct  operation of the equipment.
 4.Three-speed motor and mono-speed ratio decelerator are applied in the lifting struction, which  enables heavy load low speed and light load high speed.
 5.Planet gear decelerator is applied in the circumgy rating structure, together with moment-limiting  hydraulic coupler, which can realize high load capacity, steady starting and reliable operation. 
>>>Main Parameters

>>>What we can supply

>>>Product Detail



>>>Our Service

1- One year warranty for whole machines. 

2- Providing free quick-wear part.

3- Low charge for continue maintenance when warranty is expired. 

4- Exclusive engineer support at any time.

5- We can provide free training to end-users

6- OEM service is available.

7- We can provide on-site service in some countries and areas where we have overseas office or agents.

 >>>Cooperate Case


>>>Packing Transportation


 

>>>FAQ

1.What should I supply if I want to know the price?

If you want to send inquiry to us, please supply the following parameters:

   A.Tip load and Max. load(Ton) of the tower crane

   B.Jib length (m)

   C.Height(m)

Then we will supply the price as soon as possible.

Please feel free to contact with us!
Ms.Mika 
Shandong Tavol Construction Engineering Co.,Ltd
Tel:0086-538-8520698 Fax:0086-538-8520697
Mobile: +86 13287635200
 

 

The Hardness Tester is a hardness tester. Metal hardness measurements were first defined by Ray Ommel's definition of hardness, which means that the material resists the ability of a hard object to press into its surface. It is one of the important performance indicators of metal materials. The higher the hardness in general, the better the abrasion resistance.

Hardness test is the simplest and most convenient test method in mechanical performance test. In order to be able to replace certain mechanical properties tests with hardness tests, a more accurate conversion of hardness and strength is required in production.
1. Dietmar Leeb The Leeb hardness is based on the latest Leeb hardness test principle and is designed using state-of-the-art microprocessor technology.
2. Brinell Hardness (HB) Hardened steel balls of a certain size (typically 10 mm in diameter) are pressed onto the surface of the material at a given load (typically 3000 kg) and held for a period of time. After loading, the ratio of the load to its indentation area , which is the Brinell hardness value (HB) in kilograms force/mm2 (N/mm2).
3. Rockwell Hardness (HR) When HB>450 or the specimen is too small, the Brinell hardness test cannot be used instead. It uses a diamond cone with a vertex angle of 120° or a steel ball with a diameter of 1.59 and 3.18 mm to press the surface of the material under test under a certain load. The hardness of the material is obtained from the depth of the indentation. According to the hardness of the test material, divided into three different situations
HRA: It is the hardness obtained with a 60kg load and a diamond cone press. It is used for materials with extremely high hardness (such as cemented carbide, etc.).
HRB: Hardened steel balls with a load of 100kg and a diameter of 1.58mm are used to obtain a hardness that is used for materials with low hardness (such as annealed steel, cast iron, etc.).
HRC: It is the hardness obtained with a 150kg load and a diamond cone press. It is used for materials with high hardness (such as quenched steel, etc.).
4. Vickers hardness (HV) with a load of 120kg or less and a diamond square cone press with a vertex angle of 136° is pressed into the surface of the material. The load value is divided by the surface area of the material indentation pit, which is the Vickers hardness value. (HV).
5 Knoop Hardness (HK)
Suitable for hardness testing of high hardness materials (general hardness measurement above HV1000 hardness).
6. There are Shore hardness tester
7. Wechsler hardness tester (HW)
Suitable for the measurement of Vickers hardness value of aluminum alloy products.
8 plaster hardness tester
Applicable to the measurement of the hardness of building plaster, the steel ball is placed on the test piece, and the depth of the ball mark under the effect of the fixed load is measured, and the plaster hardness of the test piece is calculated.
The above hardness is only a few commonly used, in addition to Shore hardness, Shore hardness, Barcol hardness, Mohs hardness. Practice has shown that there is an approximate correlation between hardness values and strength values between various hardness values of metallic materials. Because the hardness value is determined by the resistance to initial plastic deformation and the resistance to continued plastic deformation, the higher the strength of the material, the higher the resistance to plastic deformation and the higher the hardness value.

Hardness Tester

Hardness Tester,Automatic Hardness Tester,Digital Hardness Tester,Vicker Hardness Tester

Dongguan Jaten Instrument Co.,LTD(HK TT:Jaten Technology Co.,Ltd ​) , http://www.jatentech.com