What is the technical standard of the V belt, what is the national standard of the V belt

What is the standard elongation factor? What is the range of fluctuations in length?

V-belts are known as V-belts in the standard. V-belt should be people's daily customary name for V-belt, or commonly known as it.

The national standard defines the V-belt as follows: "a transmission belt with an isosceles trapezoidal cross-section or approximately an isosceles trapezoidal cross-section, and its working surface is two sides".

V-belts are divided into many types: ordinary V-belts, narrow V-belts, wide V-belts, semi-wide V-belts, large wedge angle V-belts, automobile V-belts, toothed V-belts, joint V-belts, double-sided V-belts, etc. Therefore, there are different V-band standards, such as:

GB T 1171-2006 Ordinary V-belts for general transmission (this standard is currently in force, but will be replaced by the standard of the same name GB T 1171-2017, which came into force on September 1, 2017);

GB T 12730-2008 Narrow V-belt for general transmission.

GB T 12731-2014 Flame retardant V-belt.

GB T 12732-2008 Car V-Belt.

GB T 15327-2007 Variable Speed Wide V-Band for Industrial Use

GB T 18860-2015 Motorcycle Variable Speed V-Belt.

HG T 2442-2012 Washing machine V-belt.

HG T 2819-2010 Narrow V-band in combination.

HG T 3745-2011 Coupling common V-belt.

HG T 4493-2013 Light V-belt for agricultural machinery.

MT 374-2008 Flame retardant V-belt for coal mines.

The V-belt standards are as follows:1. Section size of A-type V-belt:

Top width 13mm, thickness 8mm.

2. Section size of B-type V-belt:

Tops width 17mm, thickness.

3. C-shaped V-belt section size:

Tops width 22mm, thickness.

4. Section size of D-shaped V-belt:

Tip width thickness 19mm.

Choice of V-belt modelThe V-belt is divided into seven types: O-type, A-type, B-type, C-type, D-type, E-type, and F-type, and the cross-sectional area of the tape gradually increases from O-type to F-type. SPZ SPA SPB SPC These four models are V-shaped with a narrow V-band.

The choice of tape model is determined by the speed of the tape delivered by the power to be transmitted, and there is a lot of knowledge in this. The selected model should be compatible with the selected triangle tape, otherwise the triangle tape will be abnormal in the pulley groove, when replacing the triangle tape, it is best to bring the old to the agricultural machinery department to buy, in case the model is wrong.

When the old and new mixed double or three more than three triangle tapes need to be replaced, the specified type of triangle tape should be selected, and the tightness of each group of triangle tapes is required to be consistent, and the old and new triangles are not allowed to be mixed or the number of uses is reduced, otherwise, the new and old triangle belts are unevenly stressed, and even the old triangle belts do not work, which affects the power transmission and shortens the life of the triangle belts.

National standards and sizes of V-belts Each model of V-belts specifies the cross-sectional size of V-belts: The cross-sectional dimensions of A-type V-belts are: top width 13mm, thickness of 8mm; The cross-sectional dimensions of the B-shaped V-belt are:

Top width 17mm, thickness is; The cross-sectional dimensions of the C-shaped V-belt are: the top width is 22mm, and the thickness is; The cross-sectional dimensions of the D-shaped V-belt are: the width of the top, the thickness is 19mm; The cross-sectional dimensions of the E-shaped V-belt are:

The width of the top is 38mm, and the thickness is. Corresponding dimensions (width * height): o (10 * 6), a ( ( 38 *.)

The recommended number of pulley groove angles for different types of pulleys in different diameter ranges are as follows: O-type pulleys are 34 degrees when the pulley diameter range is 50mm 71mm; 36 degrees at 71mm 90mm, 38 degrees at 90mm >; A-type pulleys are 34 degrees at 71mm 100mm and 36 degrees at 100mm 125mm; 38 degrees at >125mm; B-pulleys are 125 degrees at 160mm 34mm pulley diameters; 36 degrees for 160mm and 200mm, 38 degrees for > 200mm; C-type pulley is 34 degrees when the pulley diameter range is 200mm 250mm, 36 degrees when 250mm 315mm, and 38 degrees when > 315mm; D-type pulleys are 355 degrees at 450mm and 38 degrees at 450mm >and 38 degrees at 450mm; E-type 500mm 630mm is 36 degrees, > 630mm is 38 degrees.

The models and specifications of the V-belt are:

According to GB T 11544-1997, V-belts can be divided into ordinary V-belts and narrow V-belts according to specifications.

Ordinary V-belts are divided into seven types: O-type, A-type, B-type, C-type, D-type, E-type and F-type, and the cross-sectional area of the tape gradually increases from O-type to F-type. Normal reinforced AX BX CX DX EX 3VX 5VX 8VX.

Narrow V-bands are divided into ordinary narrow V-bands and strong narrow V-bands.

Ordinary narrow V comes with four specifications: SPZ, SPA, SPB, and SPC.

Powerful narrow V with XPA, XPB, XPC.

In a joint V-band, several identical ordinary V-bands or narrow V-bands work together. There are 3V, 5V, 8V and so on.

V-belt type A type B type difference:

1. The cross-sectional size is different.

The cross-sectional dimensions of the A-type V-belt are: the top width is 13mm, the thickness is 8mm; The cross-sectional size of the B-shaped V-belt is: the top width is 17mm, and the thickness is.

2. The recommended number of pulley groove angles in different diameter ranges is different.

A-type pulleys are 34 degrees when the diameter range of the pulleys is 71mm to 100mm; 100 degrees at 125mm; 38 degrees at >125mm;

B-pulleys are 125 degrees at 160mm 34mm pulley diameters; 160 degrees at 200mm; 38 degrees at 200mm.

3. The performance of the two is different.

Type B has heavier loads than Type A. The B-type belt is wider than the A-type belt and has a better bearing capacity than the A-type belt.

The models and specifications of V-belts are: according to GB T11544-1997, V-belts can be divided into ordinary V-belts and narrow V-belts according to specifications. Ordinary V-belts are divided into seven types: O-type, A-type, B-type, C-type, D-type, E-type, and F-type, and the cross-sectional area of the tape gradually increases from O-type to F-type.

Ordinary steel axe bxcxdxex3vx5vx8vx. Narrow V-bands are divided into ordinary narrow V-bands and strong narrow V-bands. There are four specifications of the ordinary narrow V:

spz、spa、spb、spc。Strength and narrowness V with XPA, XPB, XPC. Group V-bands, several identical normal V-bands, or narrow V-bands work together.

There are 3V, 5V, 8V, etc. Same as A-type royal comm and B-shaped triangle.

The differences:1The cross-sectional dimensions of the different cross-sectional sizes of the A-type V-belts are:

Top width 13 mm, thickness 8 mm; The cross-sectional dimensions of the B V-belt are: top width of 17 mm and thickness of mm. 2.

The recommended pulley groove angle is different in different diameter ranges. When the diameter of the pulley is 71mm-100mm, the A-type pulley is 34 degrees; 100 mm, 125 mm for 36 degrees; >> 125mm is 38 degrees. When the diameter of the pulley is 125mm and 160mm, the B-type pulley is 34 degrees; 36 degrees of 160mm and 200mm; >> 200mm is 38 degrees.

3.They don't behave the same. The load of type B is heavier than that of type A, the bandwidth of belt B is greater than that of belt A, and the carrying capacity of skin disassembly is better than that of belt A.

Syringe. and pump tubing need to be replaced. If there is contamination, replace it in time. Once the injection starts, cover the piston with sterile gauze.

Commonly used triangles are of type O, A, B, C, D, O.

1. The cross-sectional size of the A-type V-belt is: the top width is 13mm, the thickness is 8mm2, and the cross-sectional size of the B-type V-belt is: the top width is 17mm, and the thickness is. Hunger.

3. The cross-sectional size of the C-shaped V-belt is: the top width is 22mm, and the thickness is.

4. The cross-sectional size of the D-shaped V-belt is: the top width, and the thickness is 19mm.

5. The cross-sectional size of the O-shaped V-belt is: the top width is 38mm, and the thickness is.

Advantages of V-belts:

1. The structure is simple, the manufacturing and installation accuracy requirements are not quietly based on the high front hall, the use and maintenance are convenient, and it is suitable for occasions with large center distance between the two axes.

2. The transmission is stable, the noise is low, and it has the effect of buffering and absorbing vibration.

3. When overloaded, the transmission belt will slip on the pulley, which can prevent the damage of weak parts and play a role in safety protection. <>

V-belts can be divided into ordinary V-belts and narrow V-belts according to specifications, and models are divided into O-type, A-type, B-type, C-type, D-type, E-type, and F-type.

The standardized V-belt section is trapezoidal, the whole circle has no joints, seven models, from O-type to F-type tape profile area gradually increases, the top width, thickness, determine the top width and thick compass rubber margin can determine the wheel groove of the V-belt pulley, on the contrary, determine the wheel groove of the pulley also determine the model that should use the V-belt.

According to different specifications, the ordinary V-belt of V-belt can be divided into four types: SPZ, SPA, SPB, SPC, and the specifications of the narrow mountain rolling V-belt are divided into three types: XPA, XPB, XPC, for example, SPB3070LW refers to the ordinary V-belt with an inner circumference of 3070 mm, and XPA1150LW refers to a narrow V-belt with an inner circumference of 1150 mm.

Application of V-belts

V-belt, also known as V-belt, is the largest output of the transmission belt, the most variety, the most widely used one, since 1917 was first made by the United States automobile fan belt, in the early 20s began to promote the use of industrial and agricultural machinery, more than half a century of prosperity, the development is very rapid, has become the mainstream of the transmission belt.

In the transmission belts of the world, from the perspective of rubber consumption, the V-belt has now accounted for more than 65, the toothed belt is 25, and the flat belt has been reduced to less than 10. At present, the V-belt has become the main equipment for power transmission and transmission of various mechanical devices in the world, and is widely used in today's agricultural machinery, machine tools, automobiles, ships, office equipment and other fields, playing an increasingly important role.

The above content refers to the encyclopedia V-belts.

The models and specifications of the V-belts are as follows:

1. The cross-sectional size of the A-type triangular belt is 13mm at the top, 8mm with a thickness, and the size (width * height) is.

2. The cross-sectional size of the B-shaped triangle is the top width of 17mm, the thickness, and the size (width * height) is.

3. The cross-sectional size of the C-shaped V-belt is the top width of 22mm, the thickness, and the size (width * height) is 22*14cm.

4. The cross-sectional size of the D-shaped V-belt is the top width and thickness of 19mm, and the size (width * height) is.

5. The cross-sectional size of the E-shaped V-belt is the top width of 38mm, the thickness, and the size (width * height) is 38*.

Classification of V-belts

1. Ordinary core.

Most of the cores of ordinary core triangle belts are made of wire rope cores, and a small part of them are cord cores. Since these two core structures are twisted or braided by fibers, the fibers are sheared by the inter-fiber collision roll during the operation of the V-belt, resulting in the gradual fracture and elongation of the belt core. Therefore, ordinary V-belts produced with cord and cord cores can only be used in low-load drive systems.

2. Polyester tempered brown ribbon core.

The core of the special core triangle belt adopts the core structure of polymer polyester tempered brown silk integral solid rod core. Because the polyester tempered brown silk is an integral solid core untwisted structure, good adhesion, flexural resistance, high strength, and does not run long, it not only greatly improves the service life of the rubber transmission belt, but also balances the service life of the belt body, and the enterprise can be maintenance-free and regularly replaced.

V-belt models and specifications can vary depending on the use and industry. V-belts are usually a transmission belt made of rubber or rope, which is widely used in machinery and vehicles. Here are some examples of V-belt models and specifications that Chang people see:

1.Standard model: The standard model of the V-belt is usually represented by a combination of letters and numbers, such as A, B, C, D, etc., where type A is the smallest size and type D is the largest. These models represent different bandwidths and size specifications.

2.Dimensions: The dimensions of V-belts usually include parameters such as bandwidth, belt length, and belt thickness.

For example, a V-belt might have a width of 1 2 inches (mm), a band length might be 40 inches (1016 mm), and a band thickness might be 5 16 inches (mm).

3.Special models: In addition to the standard models, there are also some special purpose V-belts, such as narrow V-belts and poly-V belts.

These models and specifications can vary depending on the needs of the specific mega demolition application.

Please note that specific V-belt models and specifications may vary depending on the manufacturer, national standards, and industry requirements. If you need to obtain a V-belt for a specific model and specification, it is recommended to consult a professional manufacturer, manufacturer or refer to the relevant technical specifications and standards.