In recent years, both at home and abroad, the infrastructure industry has been vigorously developed, especially the construction of roads and bridges. There is a saying in China that “to get rich, build roads first”.

Let’s learn about the construction of the bridge today:

1. The three types of bridges Bridges are actually divided into three types: girder bridges, arch bridges, suspension bridges, and cable-stayed bridges.

①Beam bridges are generally built in places with large spans and shallow waters. They are composed of bridge columns and bridge decks. The weight of objects is transmitted from the bridge deck to the bridge columns.

②Arch bridges are generally built on waters with a small span. The bridge body is arched. Generally, there are several bridge holes for the function of flood discharge. middle.

③Suspension bridge is the most practical type of bridge nowadays. The bridge can be built in places with large span and deep water. It is composed of bridge columns, iron cables and bridge deck. It will break, and the current suspension bridge can basically stand still when the storm comes.

The construction of most bridges is inseparable from the use of some high-strength bolts, but there are certain requirements for the installation of high-strength bolts:

1. Before installing high-strength bolts

Before installation, the oil, rust, burrs, welding nodules, dust and other impurities attached to the surface of the bolts must be cleaned to avoid affecting normal use. Before installation, it is necessary to check the connecting parts for deformation or other damage. The treated contact surface shall comply with the specified anti-slip coefficient standard, and shall be equipped with corresponding nuts, washers and other parts when used, which shall be used in a complete set and shall not be replaced with each other.

2. When installing high-strength bolts

When installing, the surface of the component should be kept dry, free from moisture and installed in a wet place, so as not to cause damage to the components. When installing, operate according to the requirements. It is forbidden to directly hammer into the bolts to prevent damage to the bolts caused by brute force.

3. Use of supporting equipment

When the electric wrench is in use, it must be regularly inspected and tested to see if it meets the standards, and the number of twists is performed in accordance with the required operations during use. When using an adjustable wrench, keep the size of the wrench and the nut matched, not too large or too small, to prevent damage to the bolt and poor use effect.

In special cases, such as when working at heights, a fixed wrench should be used. If an adjustable wrench is really needed, it should be used with the rope tied firmly to ensure the safety of the workers. When the steel structure is connected and assembled with the bolts, it is forbidden to touch it with your hands, and to take or place the shims. The correct method is to place your fingers on both sides of the shims to ensure that nothing goes wrong.

4. Care and maintenance

In order to prolong the life of the bolts and ensure the use effect of the bolts, the construction personnel should classify and use the high-strength bolts, operate according to the correct use method, and perform regular maintenance and repairs to keep the high-strength bolts at their best. effect and duration of use.

High-strength bolts are a special type of bolts that need to be used in the correct way with an electric wrench. When using them, they must be installed in accordance with strict operating instructions.

So what kind of electric wrench can meet the high-strength bolt fastening work required by the construction?

Shandong Hanpu is a professional manufacturer of wrenches for fastening high-strength bolts. It has the largest domestic production base and a professional R&D and production team. After more than 20 years of production and sales experience, Shandong Hanpu has a deep understanding of different construction requirements for electric wrenches. The main types are electric torque wrench, electric torsional shear wrench, manual torsional shear wrench, manual torque wrench, etc. At the same time, it also specializes in the production of various testing equipment, such as axial force meter, axial force torque meter, portable bolt torque detector etc., all products have been highly appraised in domestic and foreign markets.

Recently, the portable bolt torque tester ordered by Indian customers was delivered to help the Indian bridge industry.

If you are doing steel structure bolting work or are a power tool dealer, welcome to inquire with us: info@hanputool.com or Phone: +86 18653495537

No matter what questions you have, we will provide you with professional answers and provide the best quality wrenches.