Q:What is a limiter?

The compensator of the inner sleeve shall be noted that the direction of the inner sleeve is consistent with the direction of the medium flow, and the hinge rotation plane of the hinge type compensator shall be in accordance with the displacement rotation plane.

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?

At the same time in the ditch earthwork construction of the canal, in a timely manner in the construction preparation, construction machinery and personnel enter in time, officials familiar with the construction drawings and the requirements of the technical scheme, pipes and fittings in finished products into the factory inspection, once the pipe forming, timely pipe installation work.

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

The bolt tensioner is a tool for fastening and dismounting bolts. It has several forms, such as manual, electric, pneumatic, hydraulic and so onBolt tensile bolts and shear bolts, tensile bolts subjected to tensile load is axial load; shear bolts subject to shear load, tangentialThe bolt load is the force acting on the bolt, which is usually expressed by pressure, that is, the force / force acting areaThe so-called pre tightening force is a force in the mounting bolt in the bolt on the pre action (Ya Qiang), its role is to enable the bolt force and deformation, the fasteners are combined together, and can prevent the bolt fracture under impact load.Note: the preload and bolt load are less than the rated load of the bolt

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

Stretch, fasten, or loosen the bolts and think of the bolts as a rubber band,

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

Consider synchronous motor, screw drive, photoelectric induction limit, PLC connection drive control displacement

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