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What is the difference between a tension spring and a compression spring?

The tension spring is a coil spring that bears the axial tension, and its hooks are in the form of side hook tension spring, long hook tension spring, English hook tension spring, German hook tension spring, semicircular hook tension spring, duckbill hook tension spring, etc. , "Hook" is used to ensure the source of tension of the tension spring. It is generally made of spring steel with a circular section. When it is not under load, the rings of the tension spring are generally tight and there is no gap. The rebound force (tension) after extension is used to control the movement of the parts, store energy, measure the size of the force, etc. Most extension springs are usually under a certain degree of tension, even without any load. case. This initial tension determines how tightly the tension spring coils without any load. There are many kinds of springs, their functions are also different, and the forces they bear are also various. For example, pressure refers to the working pressure that the compression spring can withstand, such as the shock spring of a vehicle, and torsion refers to the torsion force that the torsion spring can withstand, such as wood. The torsion spring and tension spring of the clothespin are the test tension, such as the tension spring of the spring balance, the rebound force such as the work of the mainspring and so on. In packaging machinery, the tension spring is generally used for the reset of the actuator, and the force is relatively small, such as the reset after the cam exerts force on the actuator. The function of the compression spring is generally used for strength buffering. For example, if the two sealing props must have a buffer, a compression spring or a buffer pad is required, but the compression spring can withstand high temperature, and the buffer pad cannot do so, so the compression spring is very useful in packaging machinery. widely.

2022-08-29

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The role of torsion springs in different scenarios

1. Torsion springs control the movement of machines, such as internal combustion engine valve springs, clutch control springs, etc. 2. Torsion springs absorb vibration and impact energy, such as buffer springs under cars and train cars, and dust-absorbing springs on couplings. 3. Use torsion springs to store and output energy as power (such as clock springs, etc.). 4. Measurement factors of the force of the torsion spring, such as a dynamometer. The spring on a spring scale is called stiffness, and the higher the stiffness, the stiffer the spring. Application of torsion spring: General Applications: Pins. Laptop with clip, tailgate and garage door. Torsion springs are also suitable for hinges, counterweights and pinch point return devices, and torsion springs are available in different sizes. For small springs used in electronics and large springs in seat controls, the spring should be loaded in the direction of rotation, not rotated in a position other than the free position. The diameter of the spring becomes shorter, the corpus luteum becomes longer, and the design space is limited. Take this into consideration. Torsion springs work better when they are supported by rods or tubes, and are designed to account for the effects of friction and arm deflection on torque.

2022-08-29

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About the classification and function of special-shaped springs

1. Variable diameter coil spring of special-shaped spring. Reducing coil springs are used in some occasions, and their springs are mostly circular cross-section materials, and most of them are subjected to a compressive load. 2. Disc springs of special-shaped springs. Due to its small size and light weight, disc springs are used for buffering, vibration isolation and other occasions, and are also widely used in stamping dies, valve clutch fasteners and large construction machinery. 3. Torsion bar spring of special-shaped spring. The essence of the torsion bar spring is a straight rod made of elastic material due to the effect of torque. Because this spring has a te point with large deformation energy per unit volume, it is used in vehicle suspension equipment in daily life. 4. Scroll coil spring of special-shaped spring. The scroll coil spring is also called the scroll spring. Its effect and principle are similar to those of the conical coil spring. It absorbs pressure and can absorb a large amount of energy, but because of the difficulty of production, it is only used when the space is constrained. 5. Snake spring of special-shaped spring. The serpentine spring, also known as the serpentine spring, is named because the shape of the spring is curved like a snake. According to its shape, it can be divided into "Z" shape and "S" shape spring. This spring is used in car seat cushions, so it is called a seat spring.

2022-08-29

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The working principle and application of torsion spring

Torsion springs are widely used in computers, electronics, home appliances, cameras, instruments, doors, motorcycles, harvesters, automobiles, etc. It is a kind of spring with a more complicated design principle and a very lively type change. , the theory involved in the design is also very cumbersome. So how does a torsion spring work? Torsion springs are coil springs. The ends of torsion springs are fixed to other components, and as other components rotate about the center of the spring, the spring pulls them back to their original position, creating a torque or rotational force. Torsion springs can store and release angular energy or statically fix a device by rotating a lever around the central axis of the spring body. These springs are usually tight body, however, there is a pitch between the coils to reduce friction. They create resistance to rotation or rotational external forces. Depending on the application requirements, design the direction of rotation of the torsion spring (clockwise or counter-clockwise) to determine the direction of the spring. The turns are either tightly wound or spaced apart to accommodate torsional loads (at right angles to the spring axis). The end of the spring can be wound as a hook or straight torsion arm.

2022-08-29

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The role of car springs

Automobile suspension is a general term for all force-transmitting connection devices between the frame of the car and the axle or wheels. Its function is to transmit the force and torque acting between the wheels and the frame, and the buffer is transmitted from the uneven road to the car. The impact force of the frame or body, and the vibration caused by it is attenuated to ensure that the car can run smoothly. A typical suspension structure consists of elastic elements, guide mechanisms and shock absorbers, and individual structures include buffer blocks, stabilizer bars, etc. The elastic elements are in the form of leaf springs, air springs, coil springs and torsion bar springs, while modern car suspensions mostly use coil springs and torsion bar springs, and individual high-end cars use air springs. Suspension is an important assembly in a car, which elastically links the frame and the wheels, and is related to the various performance of the car. From the outside, the car suspension is only composed of some rods, cylinders and springs, but don't think it is very simple. On the contrary, the car suspension is a car assembly that is difficult to achieve perfect requirements. This is because the suspension has both To meet the comfort requirements of the car, but also to meet the requirements of its handling stability, and these two aspects are opposed to each other. For example, in order to achieve good comfort, the vibration of the car needs to be greatly buffered, so the spring should be designed to be softer, but the softer spring is easy to cause the car to brake "nodding", accelerate "head up" and seriously roll left and right. It is not conducive to the steering of the car, and it is easy to cause the car to be unstable.

2022-07-12

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What is a leaf spring?

effect The middle of the leaf spring is fixed on the axle through U-bolts (also known as riding bolts), and the roll ears at both ends are hinged to the brackets of the frame with pins. In this way, the axle and the body are connected by the leaf spring, which plays the role of buffering, damping and force transmission. Features The advantages are simple structure, reliable operation, low cost and convenient maintenance. It is both the elastic element of the suspension and the guiding device of the suspension. One end of it is hinged to the frame, which can transmit various forces and moments, and determine the wheel's beating trajectory. At the same time, it also has a certain friction damping effect. Kill three birds with one stone, so it is widely used in non-independent suspension. Its disadvantage is that it can only be used for non-independent suspension, with heavy weight, high stiffness, poor comfort, long longitudinal dimension, which is not conducive to shortening the front and rear suspension of the car, and the leaf spring pins at the connection with the frame are easy to wear Wait. Despite many shortcomings, leaf springs are still widely used in various automobiles. In order to improve the performance of the leaf spring, reduce the weight, and increase the lifespan, variable-section leaf springs, single-leaf springs, etc. have appeared.

2022-07-12

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