Q:What are the main uses of a bolt tensioner?

But the general does not hurt the threaded bolt tensioner, high precision, high tensile bolt General requirements is the most appropriate, domestic stretcher good brand, I recommend Prima, quality customer service is good, and I hope to help you!

Q:How do you pull the contracted muscles with a mechanical device?

A muscular spasm is a controlled contraction that causes the muscles to be tense and rigid, usually caused by lactic acid accumulation. 1) massage the muscles. 2) gently pull the muscles. Namely: 1 spasms can occur in any muscle, usually caused by unaccustomed activity, often occurring in the calf muscles of the gastrocnemius. When you massage, the injured must sit or lie down. 2 gently pull the muscles to counteract the spasms, and pull the foot to the shin in this case. Massaging and pulling muscles can increase the flow of blood in the muscle to take away and disperse the local lactate. Muscle spasm first aid Beijing Morning Post muscle spasm is commonly known as cramping. It is an involuntary tonic contraction produced by the muscles.

Q:What is a bolt tensioner? How do you use it?

Pretension is a familiar term in machinery, architecture and other fields. General general description: in the connection (connection mode and use is various, before the work load is), in order to enhance the reliability of the connection and close, to prevent the load by connecting cracks or slip and pre applied force between.

Q:What are the main uses of a bolt tensioner?

He is elastic, in his range of elasticity can be stretched, and generally does not hurt the threaded bolt tensioner, high precision, high tensile bolt General requirements is the most appropriate, domestic stretcher good brand, I recommend Prima, quality customer service is good, and I hope to you help!

Q:The working principle of the bolt tensioner

A bolt tensioner consists of a hydraulic pump, a high pressure hose, a pressure gauge, and a stretched body. The hydraulic pump is the power source, the pressure meter reflects the output pressure of the pump, and the high pressure hose is connected with the hydraulic pump and the drawing body. A drawing body is an actuating element for realizing a bolt stretching. The utility model is mainly composed of a piston cylinder, a piston, a supporting bridge and a stretching nut.

Q:What are tensile and shrink wrapping?

Stretch packaging began in 1970s as a new packaging technology developed from shrink packaging. Stretch packaging is a packaging method that relies on a mechanical device to wrap the elastic film around the package at room temperature and seal it at the end thereof. Since stretching packaging does not require heating, the energy consumed only shrinks by 1/20 of the package. Stretch wrap can bale single items, can also be used for packing pallet packaging, set.

Q:How to achieve telescopic power arm

It is better to use a hydraulic lever, which is simple and can be fitted with a fixed device to control his travel distance,

Q:Mechanical structure and principle of automatic focusing lens for camera

The principle of the infrared ranging method is that the camera takes the initiative to emit infrared light as the distance measuring light source and the geometric relation between the infrared LED, and then calculates the focusing distance.

Q:Mechanical principle of belt expansion machine

Principle: the telescopic belt conveyor adds a telescopic mechanism to the ordinary belt conveyor, so that the belt conveyor can be freely extended in the length direction.

Q:What is the automatic telescopic function of an automatic umbrella?

Working process and principle analysisA. the long handled umbrella is in a tight position, that is, the middle slide is at the lower dead point1. the elasticity of the spring 1 at the moment reaches its minimum value and is greater than 0.The 2. middle slider is at the lower dead center and is locked by the bump switch 1.On the 3 of the 3. rib buckle at the fulcrum of the slider 2, a spring 2 stretch for 0.The B. long handle umbrella is at the beginning of the opening, i.e., the middle slider begins to move up