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

Stretch, fasten, or loosen the bolt and think of the bolt as a rubber band. It is flexible and can be stretched freely within its range of elastic deformation

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

Muscle cramps occur in swimming is not surprising in panic, self-help is not water side hand cramps cramp toes, forced to pull the body, at the same time with the side of the hand hold the leg cramps cramp knee, knee extension to help relieve spasm, after, and then slowly toward the shore. < < excerpt > > (Mo Fei) the method of dealing with muscle spasm during exercise. The main causes of muscle spasm are: 1. A great deal of dehydration in the training competition, which results in imbalance of the body's dielectric.

Q:Is the construction of the water supply steel pipe a telescopic device?

The trench excavation method should be carried out before the investigation and study, fully understand the channel section of the soil, underground water, underground structures, underground trench near building and construction environment, find the problem timely contact with the construction unit, research on treatment measures. In order to prevent over excavation, the groove should be laid out before excavation, and the excavated layer shall be excavated at intervals according to the opening slope, and the excavation depth shall be measured at any time.

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 kind of materials are used in the telescopic equipment of machinery industry?

The most common form of bond failure is shear. So the key requires enough strength and steel. No. 45 is the most commonly used steel.

Q:What are tensile and shrink wrapping?

Stretching: one of the basic characteristics. The tensile feature is to draw the cross section of the drawn cross section in a specified tensile direction at a specified depth. Stretching is the most commonly used entity creation type that is suitable for creating rule entities and should be skilled.The main purpose: contraction of envelope: complex parts or components 1. can be used as a reference or package model to create a lightweight version; 2. can be used to create geometric model sharing relationship with suppliers and customers, and get rid of what you don't want to share details; file - save a copy - type contraction envelope; create components, in the form of a activation element inserts - shared data - shrinkwrap -- referring to the type for the components of a subset of context.

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

Ultrasonic ranging method, which is based on the ultrasonic wave in the digital camera and the time between the subject of distance measurement. Digital cameras are equipped with ultrasonic transmitting and receiving device, when the ultrasonic vibration generator for ultrasonic, ultrasonic to the subject, is the receiver's perception of return immediately, and then by the integrated circuit according to the ultrasonic round-trip time to calculate 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