How is the belt length calculated? What is the right length of the belt?

The calculation method of the length of the belt, the length of the belt has a formula to calculate. The details are as follows:

Belt length calculation formula:lb = ((df + dm))2 lfm) where lb = belt length, df = large pulley diameter, dm = small pulley diameter, lfm = distance from the center of the large pulley to the center of the small pulley.

Car engines warm up in winterThe main reason for a hot car is that after the car is parked for a long time, the oil in the engine flows back into the oil pan in the lower part of the engine, so it is necessary to warm the car.

The correct way to warm up the car should be to hit the road after 30 seconds to one minute after starting, but at this time do not drive at high speed, should be kept at a low speed, the engine speed should not exceed 3000 3500 rpm, generally keep 2000 rpm, otherwise the engine and gearbox are subject to intense wear and tear can not be recovered. Wait for the engine temperature to rise to normal operating temperature (about 3 to 5 minutes) and then resume normal driving.

The above information refers to Encyclopedia - Automobile Engine.

Belt length calculation formula:

lb = ((df + dm))2 lfm)lb = belt length.

df = large pulley diameter.

dm = small pulley diameter.

lfm = distance between the center of the large pulley and the center of the small pulley.

Belt length calculator.

Belt speed calculation formula:

v = π dm nm / 12

v = belt speed (ft min).

nm = motor speed (rpm).

Can you count it for me?

If it is a belt of Gates, you can directly measure the length and width, for example, Santana's generator belt 10*945, which represents a width of 10mm and a length of 945mm, if converted to Samsung's model is RECMF1370,

The length of the belt is generally between 110cm and 130cm for men and 90-120cm for women.

In general, different waist circumferences should choose different belt lengths, that is to say, the selection of belt size should be based on the size of the waist to choose the appropriate size. According to the comparison between men's waist size and belt length, the comparison is as follows: 105cm belt for ruler waist, 110cm belt for ruler waist, 115cm belt for ruler waist, 120cm belt for ruler waist, 125cm belt for ruler waist, and 130cm belt for ruler waist.

The difference in size and length of the belt is only between inches. Measure the length between the belt and the middle eyelet, and then measure your waistline, if the two are very close, it will be the right belt. If it is a waist circumference measured by a clean body, please add one or two centimeters to the number to calculate the normal waist circumference, and if it is measured with pants, there is no need to add a number.

The resulting belt will allow you to tuck the hem of your shirt into the waistband of your pants in most cases, as well as high-waisted pants that need to be cinched and low-rise pants that need to be relaxed.

Belt length selection tips

The ruler should belong to the thinner category, and the total length of the belt (including the belt head) is about 100-105cm.

The ruler should belong to the category of relatively moderate stature, and the total length of the belt (including the belt head) is about 108-113cm.

It should belong to the category with a slightly larger waist circumference, and the total length of the belt (including the belt head) is about 115-118cm.

The ruler should belong to the fatter category, and the total length of the belt (including the belt head) is more than 120cm.

The above content reference: Encyclopedia - Belt (word concept).

How to calculate the length of a roll of belt and what is the formula?

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I'm glad to answer for you: there are many ways, let's say two! Method 1:

The calculation method of weight lift-off is to weigh the total weight of the belt and divide it by the theoretical weight of each meter of the belt. For example, EP300 B1000*5 (, the total weight is 1 ton, and the theory of each meter is 1000, that is, 1000, and the length of this belt is 66 meters (considering the removal of skin and error loss). Method 2:

That is, the trapezoidal surface noise dissipation method, that is, (upper bottom + lower bottom) * height 2, that is, the belt (inner roll circumference + outer ring circumference) * layer 2 is approximately equal to the total length of the belt. For example, EP300 B1000*5 (, the inner diameter of a roll is 330mm, the outer diameter is 1200mm, a total of 44 layers. i.e. (, the length of this belt is 105 meters.

The belt speed should be calculated according to the speed and diameter of the motor, the diameter of the machine, or the rotational speed.

1. How to calculate the speed ratio of V-belt drive.

450 103 = 960 rpm, it is impossible to reach 29 rpm. If you measure it at 29 rpm, there are two possibilities: there is a worm gear deceleration in the middle, and there is a frequency converter. Otherwise it is impossible.

2. Example of pulley speed ratio calculation formula.

The diameter of the big wheel * the speed of the big wheel = the diameter of the small wheel * the speed of the small wheel, the distance traveled by the two is equal.

The current speed of the big wheel: 274*1200 315

After changing the speed, the diameter of the small wheel is d: d*1300=(274*1200 315)*315d=

The diameter of the small wheel becomes.

3. How to calculate the speed ratio of pulleys.

The diameter of the big wheel * the speed of the big wheel = the diameter of the small wheel * the speed of the small wheel, the distance traveled by the two is equal.

The current speed of the big wheel: 274*1200 315

After changing the speed, the diameter of the small wheel is d: d*1300=(274*1200 315)*315d=

The diameter of the small wheel becomes.

Gasoline must be used for the last cleaning before assembly to ensure that the parts are clean and dry, so as to ensure that the mating surface is tightly fitted and free of oil stains, and has sufficient friction.

The inner six anti-permeability and careful angle bolts for assembly should also be washed and dried with gasoline before assembly, and lubricating oil or grease should not be applied to the screw bolts or screw holes to ensure that the bolts have sufficient friction self-locking capacity after tightening.

How to calculate the belt speed ratioExtended reading:

When the three hexagon bolts are about to be installed in place, they need to be tightened in turn to ensure that the taper sleeve is subjected to uniform axial force and that the pulley and taper sleeve are well positioned coaxially.

Check and measure the length of the hexagon bolt for assembly before installation to ensure that the assembly bolt can withstand the bottom end of the blind hole of the taper sleeve after tightening, so as to ensure that the cone surface fits tightly, and ensure that the bolt is subjected to the reverse thrust of the bottom end of the blind hole, resulting in the same anti-loosening effect as the principle of double nuts.

After the pulley is tightened, check the cable and adjust the relative position of the main and driven pulleys to ensure that the two wheels are in the same plane and the belt tension is appropriate. The pulley cover should be in good condition and installed firmly to ensure that the belt is broken or the pulley is loose and exited during operation, resulting in a major safety accident. <>

Summary. The formula for calculating the length of the triangle is as follows: l= (r+r)+2a+(r-r) 2 a; l=π(r+r)+2a+(r-r)^2/4a。

The length of the V-belt is calculated on the principle that the length of the V-belt is the part that is attached to the big wheel + the part that is attached to the small wheel + the suspension length.

The specifications of the V-belt are divided by the size of the back width and height (thickness), according to the size of different back width and height (thickness), the national standard stipulates the O, A, B, C, D, E and other models of the V-belt, and the section width, top width and height of each type of V-belt are different, so the pulley must also make various troughs according to the shape of the V-belt; These different geometries determine the O-type pulleys, A-type pulleys, B-type pulleys, C-type pulleys, D-type pulleys, E-type pulleys and other models of pulleys.

How to calculate the length of a V-belt.

Hello, dear, wait a minute.

The formula for calculating the length of the triangle is as follows: l= (r+r)+2a+(r-r) 2 a; l=π(r+r)+2a+(r-r)^2/4a。The length of the V-belt is calculated on the principle that the length of the V-belt is the part that is attached to the big wheel + the part that is attached to the small wheel + the suspension length.

The specifications of the V-belt are divided by the size of the back width and height (thickness), according to the size of different back width and height (thickness), the national standard stipulates the O, A, B, C, D, E and other models of the V-belt, and the section width, top width and height of each type of V-belt are different, so the pulley must make various troughs according to the shape of the V-belt; These different groove types determine the O-type pulleys, A-type pulleys, B-type pulleys, C-type pulleys, D-type pulleys, E-type leather pulleys and other types of pulleys.

The belt size specifications are as follows:

1. O belt and M belt: the width of the belt surface is 8mm, the thickness of the belt is 8mm, the length is 20 inches to 70 inches long, that is, 500mm is 1775mm long, and the rest of the length is rarely used. There are two types of belts: toothed and non-toothed.

2. The width of the belt surface of the belt is 13mm, the thickness of the belt is 9mm, and the length is 23 inches to 100 inches long, that is, 580mm to 2300mm long, and the rest of the length is rarely used. There are two types of belts: toothed and non-toothed.

3. The width of the belt surface of the B belt is 15mm to 17mm, the thickness of the belt is 11mm, the length is 24 inches to 99 inches long, that is, 600mm to 2540mm long, and the rest of the length is rarely used. Belt with teeth.

Fourth, C belt, the width of the belt surface is 20mm to 22mm, the thickness of the belt is 13mm, the length is 28 inches to 98 inches long, that is, 725mm to 2500mm long, and the rest of the length is rarely used. Belt with teeth.

The origin of the belt:

In fact, the belt was used to tie the waist belt in ancient times, and the early Chinese clothing did not use buttons, but only sewed a few small belts at the placket, and the name of this small belt was Jin. In order not to spread the clothes, people tied a large belt around the waist, this large belt is called a belt, which is the same name as the belt used to tie the hakama today, but the function is not the same. Because the belt has this special function, the ancients attached great importance to it.