Supply of cold and hot dip galvanized track pressing plate with three eyes, single groove clamping plate, and double groove clamping plate

A flexible cylindrical pin loading and unloading tool, including a rectangular base, wherein a hollow cylindrical fixture station is arranged for fixing the fixture and installing cylindrical pins on the fixture for shear force testing. The fixture includes an outer cylinder and an inner cylinder that are sleeved together, and the outer cylinder and inner cylinder are in a gap fit. The base is also provided with a counterbore for removing the inner cylinder after the fixture testing is completed.

Flat washers are mainly used to reduce pressure. When there is a large axial force when tightening some parts, it is easy to make the washer press into a disc shape. In this case, materials can be used and hardness can be increased to solve the problem.

The tail of the drill tail screw is in the shape of a drill tail or pointed tail, without the need for auxiliary processing. It can be directly drilled, tapped, and locked on the setting material and foundation material, greatly saving construction time. Compared to ordinary screws, they have high toughness and maintenance, and will not loosen after being combined for a long time, making them safe to use. Especially in the combination of construction, construction, residential and other places, self drilling screws are the best economical fasteners in terms of operability, cost, and credibility. Nowadays, the construction of high-rise buildings and high-speed transportation in mainland China requires high-quality drilling screws;

A semicircular key is a type of key, with a flat upper surface and a semicircular curved lower surface, with parallel sides, commonly known as a crescent key. It has the same connection method as a flat key, but it is more convenient to manufacture and disassemble than a flat key, especially suitable for connecting tapered shafts and wheel hubs. The semicircular key transmits torque on the side, but the keyway is deeper, which greatly weakens the shaft. Due to the deep keyway, the bottom of the keyway is prone to deformation after heat treatment on the shaft. Therefore, when assembling a semi circular key and keyway in a transitional fit relationship, there is often a large interference between the lower part of the semi circular key and the bottom of the keyway, which makes assembly difficult or impossible. To solve the above technical problems, the current method often adopted is to make the thickness of the semicircular key appropriately thinner, so that the semicircular key and keyway are in a gap fit, which leads to a large gap between the upper part of the semicircular key and the keyway. During operation, the semicircular key is difficult to locate in the keyway, affecting smooth transmission.

Overall, combination screws are widely used in electrical, electrical, mechanical, electronic, household appliances, furniture, ships, and more. But as mentioned above, different combination screws have different effects. For example, cross pan head combination screws are generally used on small electronic products. The larger cross hex combination screws are used on larger electrical products, such as frequency converters. Some larger frequency converters have many cross hex combination screws available. Hit on the frequency converter casing. Relieve the tightening effect. For example, the two combination screws with flower teeth are used on the frequency converter to break the paint and make all the two combination screws on the casing board energized. For example, the square wire pressing two combination screw itself is a pan head screw with a square pad for two combination screws. It is generally used on the wiring terminal on the surface. It is used for wiring and for pressing wires.