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Adjustable speed drive

Adjustable speed drive

The cycloidal adjustable speed drive is a novel transmission device that uses the planetary transmission principle and uses cycloidal pin gears. The transmission of the cycloidal adjustable speed drive can be divided into three parts: the input part, the deceleration part and the output part

adjustable speed drive

1)High-speed ratio and high-efficiency single-stage transmission can achieve a reduction ratio of 1:87, and the efficiency is above 90%. If multi-stage transmission is adopted, the reduction ratio is larger.

2)Compact and small size Due to the planetary transmission principle, the input shaft output shaft is on the same axis, making the model as small as possible.

3)Smooth running noise Low Cycloidal pin teeth have a large number of meshing teeth, a large overlap coefficient and a mechanism for balancing the components, so that vibration and hum are limited to a minimum.

4)Reliable use and long service life Because the main parts are made of high-carbon chrome steel, high strength is obtained by quenching treatment (HRC58~62), and some transmission contact adopts rolling friction, so it has long durability and long service life.

 adjustable speed drive

 

The cycloidal pinwheel adjustable speed drive is a novel transmission machine adopting K-H-V less tooth 
difference one type transmission principle and cycloidal pin gear meshing. It is widely used in
textile printing and dyeing, light industrial food, metallurgical mining, petrochemical, lifting and
transportation. Drive and reduction gears in the field of construction machinery.
Adjustable speed drive
Structure principle: All the transmissions of the planetary cycloid adjustable speed drive can be divided into
three parts: the input part, the deceleration part and the output part. A double eccentric sleeve
with a 180 degree misalignment is mounted on the input shaft, and two roller bearings are
mounted on the eccentric sleeve to form an H mechanism. The center hole of the two cycloidal
wheels is the raceway of the eccentric sleeved arm bearing, and The cycloidal wheel and the
pin gear pin arranged on the pin gear case are engaged to form a small tooth difference
internal meshing speed reduction mechanism (in order to reduce friction, in the adjustable speed drive
with a small speed ratio, the pin gear pin There are needle sets).
Adjustable speed drive

When the input shaft rotates one year with the eccentric sleeve, the movement of the cycloidal
wheel becomes a plane motion with revolution and rotation due to the characteristics of the
tooth profile curve on the cycloidal wheel and the limitation of the pin gear pin on the pin gear
housing. When the input shaft rotates one revolution, the eccentric sleeve also rotates for one
week, and the cycloidal wheel rotates through a tooth difference in the opposite direction to
obtain a deceleration, and then the W output mechanism is used to transmit the low speed
self-rotation of the cycloidal wheel through the pin shaft to the pin shaft. Output the shaft to
achieve a lower output speed.
Adjustable speed drive

Third, the operation notes (1) Check all components of the hydraulic system correctly before operation, and add oil to the specified height through the filter. (2) Start the operation for 10 to 15 minutes without load, and perform exhausting, foam in the fuel tank, noise in the system, and stagnant this adjustable speed drive cylinders to prove that there is air in the system. (3) After removing the air, fill up the fuel tank, and then gradually increase the load to the this adjustable speed drive until the maximum load, observe whether there are abnormal phenomena, such as noise, oil rise and oil leakage. (4) Replace the oil by running for 50 hours, and replace it according to the maintenance rules. (5) If it is not a this adjustable speed drive failure, please do not disassemble it easily.

Adjustable speed drive

First, the installation (1) The mounting of the cycloidal hydraulic this adjustable speed drive must have sufficient rigidity. When the system has a pressure shock, the this adjustable speed drive is not allowed to vibrate, which is easy to damage the this adjustable speed drive. (2) The output shaft of the this adjustable speed drive should be coaxial with the center line of the connected coupling. (3) When the this adjustable speed drive enters and returns oil as steel pipe, the stress of the pipeline should be completely removed, and the pipeline is not allowed to exert force on the this adjustable speed drive. When connecting the drain pipe, the oil return resistance should be below 0.3MPa, and it should be connected separately into the fuel tank. Do not connect it with other oil return pipes. If the oil return resistance (back pressure) is too high, the technical performance of the this adjustable speed drive will deteriorate. . (4) Before the this adjustable speed drive is installed, clean the hydraulic oil from the two ports to the this adjustable speed drive housing. Turn the output shaft to install if there is no abnormality. (5) The radial load on the this adjustable speed drive output shaft should not exceed the specified value, otherwise it will affect the reliability of the this adjustable speed drive and shorten its service life. (6) When the this adjustable speed drive is put into operation for about 200 hours, it is necessary to change the oil and clean the oil filter.

Adjustable speed drive

Second, the system design

(1) The intermittent working pressure of the this adjustable speed drive refers to the maximum allowable working pressure of the this adjustable speed drive inlet port, and the continuous working pressure refers to the pressure difference between the inlet port and the return port.

(2) It is not allowed to use the this adjustable speed drive at the maximum speed and maximum pressure at the same time.

(3) Under intermittent working conditions, the this adjustable speed drive running time per minute shall not exceed 10%.

(4), the maximum oil temperature is 80 °C.

(5) The shaft seal assembly used in the cycloidal this adjustable speed drive can generally withstand higher working pressure, but in order to obtain good life and comprehensive mechanical performance, it is recommended to use the back pressure not exceeding 5 MPa. When it is exceeded, it is recommended to connect the external drain pipe. When connecting the drain pipe, ensure that the this adjustable speed drive is always filled with oil. In addition to maintaining a low back pressure, the external drain pipe can also remove the wear contaminants generated inside the this adjustable speed drive and generate a certain cooling effect.

(6) There should be a running-in period before the this adjustable speed drive is fully loaded. It is recommended to run for 1 hour below 30% of the maximum working pressure.

Adjustable speed drive

Third, hydraulic oil The ideal performance and service life of a cycloidal hydraulic this adjustable speed drive depends to a large extent on the hydraulic fluid used. One of the most important performance indicators to consider when selecting hydraulic fluids is viscosity. The choice of viscosity should always be considered: the oil must be lean enough to facilitate flow. But at the same time it must be thick enough to seal and maintain an oil film between the bearing and the sealing surface.
(1), viscosity and temperature The temperature of the oil affects its viscosity. Generally, when the temperature of the oil is high, it becomes thinner and its viscosity is lowered; and vice versa, when the temperature of the oil is low, its viscosity increases. When selecting oil, it is important to consider the temperature at which the hydraulic system is started and in normal operation. The hydraulic fluid is generally thicker at the beginning of the hydraulic system. As the system operates, the temperature of the oil rises until the temperature at which the cooling system begins to operate. From this time on, the oil should be kept at the design temperature of the hydraulic system. In practical applications, this situation is different because the working environment of the hydraulic system varies from high temperature to low temperature. The cooling system also varies from complex to simple, and the outside temperature also affects the operating temperature of the system. We recommend using oil as 46# anti-wear hydraulic oil, the viscosity under working conditions is not less than 13cSt.

Adjustable speed drive

(2), cleanlinessThe cleanliness of the fluid in the hydraulic system is very important. The oil used in the cycloidal hydraulic this adjustable speed drive shall maintain the ISO Cleanliness Specification 18/13 as standard according to SAE J1165, which allows less than 2500 particles with a diameter greater than 5 μm per ml of oil and a number of particles larger than 15 μm in diameter. It should be less than 80.

(3) Maintenance of hydraulic oil Maintaining acceptable viscosity and cleanliness is essential for all hydraulic systems. The cycloidal hydraulic this adjustable speed drive is widely used, and we can't do everything. Field testing and monitoring is the only way to achieve cleanliness accuracy.

Fourth, note: (1) If the oil is too thick, it will cause cavitation and damage to the oil pump when it is started in cold weather, but there is no cavitation problem to the this adjustable speed drive. (2) When hydraulic oil is selected, all components in the system should be considered and properly adjusted to obtain the best viscosity range.

(3) If the color of the oil turns black, there may be overheating problems. (4) If the oil becomes emulsified, there may be water pollution. (5) When the system is very cold, pay attention to the indication of the liquid level.

Adjustable speed drive

Features:  The cycloidal pinwheel adjustable speed drive is a new type of transmission machine designed according to 
GB/T2982-94 adopting cycloidal pin gear meshing and less tooth difference planetary
transmission principle. It has been widely applied to petroleum, chemical, construction,
metallurgy, Mines, lifting and transportation, textile printing and dyeing, construction machinery,
food industry, electronic television and other fields are deeply trusted and praised by users.
The cycloidal pinwheel adjustable speed drive has the following characteristics: large reduction ratio, high
transmission efficiency, small size, light weight, less failure, long service life, stable and reliable
operation, low noise, convenient assembly and disassembly, easy maintenance, simple
structure and overload capability. Strong, impact resistant, small moment of inertia, and so on.
adjustable speed drive
Model specifications:  1. Cycloidal pinwheel adjustable speed drive models are divided into: Level 1, Level 2  There are 10 models at the first level: 12, 15, 18, 22, 27, 33, 39, 45, 55, 65; there are 13 models
at the second level: 1512, 1812, 1815, 2215, 2218, 2715, 2718, 3318, 3322, 3922, 4527, 5527,
6533; the first-stage reduction ratio is: 11, 17, 23, 29, 35, 43, 59, 71, 87 The second reduction
ratio is composed of the first-stage reduction ratio. 2. Cycloidal pinwheel adjustable speed drive structure type: BW horizontal double shaft type; BL vertical
double shaft type BWY horizontal type with this adjustable speed drive type, BLY vertical type with this adjustable speed drive type 3. Example of the representation method of cycloidal pinwheel adjustable speed drive: B—Cycloidal pinwheel adjustable speed drive W—Horizontal structure E—secondary L—vertical structure Y-belt this adjustable speed drive
Adjustable speed drive
main feature: 
First, high speed ratio and high efficiency With advanced transmission, the reduction ratio of 1:8
7 can be achieved, and the efficiency is over 90%. If multi-stage transmission is adopted, the
reduction ratio is larger.

Second, compact structure and small size Due to the planetary transmission principle, the input
shaft and the input shaft are on the same axis, so the structure is compact and the volume is
small.
Adjustable speed drive

Third, the operation is stable and low noise The cycloidal pin teeth have a large number of
meshing teeth, a large overlap coefficient and a mechanism for smoothing the machine, so that
vibration and noise are limited to a small extent.

Fourth, reliable use, long life Because the main parts are made of bearing steel, high strength is
obtained by quenching treatment (HRC58-62), and the rolling contact friction is adopted for the
department drive contact, so the durability is long. The design is reasonable, the maintenance
is convenient, the assembly is easy to disassemble, the number of smaller parts and simple
lubrication make the cycloid adjustable speed drive deeply trusted by users.

Adjustable speed drive

Cycloid adjustable speed drive Cycloid adjustable speed drive It is a novel transmission device that uses the planetary transmission principle and uses cycloidal pin gear meshing. The transmission of the cycloidal pinwheel adjustable speed drive can be divided into three parts: the input part, the deceleration part and the output part. A double eccentric sleeve with a 180° misalignment is mounted on the input shaft, and two roller bearings called jibs are mounted on the eccentric sleeve to form H The center hole of the mechanism and the two cycloidal wheels is the raceway of the eccentric sleeved arm bearing, and the cycloidal wheel and the needle gear are engaged with a set of annularly arranged pin teeth to form a tooth difference into one tooth. Engagement reduction Speed ​​mechanism, (in order to reduce the friction, in the adjustable speed drive with a small speed ratio, the pin gear has a pin sleeve).

Adjustable speed drive

When the input shaft rotates one year with the eccentric sleeve, the movement of the cycloidal wheel becomes a plane motion with both revolution and rotation due to the characteristics of the tooth profile curve on the cycloidal wheel and the restriction on the pin gear on the needle gear. When the input shaft rotates one revolution, the eccentric sleeve also rotates for one week, and the cycloidal wheel rotates one tooth in the opposite direction to obtain the deceleration. Then, with the W output mechanism, the low-speed rotation movement of the cycloidal wheel is transmitted to the output shaft through the pin shaft. Thereby obtaining a lower output speed

The cycloidal pinwheel planetary transmission and the involute less tooth difference planetary 
gear transmission are the same as the K-H one planetary gear transmission, and their working
principle and structure are basically the same. The difference is that the tooth profile of the
planetary gear of the cycloidal pinion planetary transmission is not an involute, but an inner
equidistance curve of the variable amplitude epicycloid (in which the equidistance curve with a
short outer cycloid is more common) ); the sun gear tooth profile is conjugate with the above
curve is a circle.
Adjustable speed drive
advantages:
1) The transmission ratio range is large. The single-stage transmission is 6 to 119, the
two-stage transmission ratio is 121 to 7569, and the third-stage transmission ratio is up to
658503. 2) Small size and light weight. It can replace the two-stage ordinary cylindrical adjustable speed drive
with a volume reduction of 1/2~2/3; the weight is reduced by 1/3~1/2. 3) High efficiency. Generally, the single-stage efficiency is 0.9-0.95. 4) Smooth operation and low hum. 5) Reliable work and long life
Adjustable speed drive
The weak link of the cycloidal pinion planetary transmission is the jib bearing. Because the jib 
bearing works under the condition of high force and high rotation speed (the relative rotation
speed of the inner and outer rings is equal to the input shaft and the output shaft. The sum of
the absolute values ​​of the speeds, so in the new series to ensure the life of the arm bearings, it
is often necessary to use reinforced roller bearings.
The cycloidal pin teeth have a large number of meshing teeth, a large overlap coefficient and a 
mechanism for smoothing the mechanism, so that the vibration noise is limited to a small
extent.

Adjustable speed drive

The first-stage transmission reduction ratio is 9~87, the double-stage transmission reduction 
ratio is 121~5133, the multi-stage combination can reach tens of thousands, and the pin-tooth
meshing-type rolling friction, the meshing surface has no relative sliding, so the first-stage
deceleration efficiency is up to 94%. Compact size and small size Due to the planetary
transmission principle, the input shaft output shaft is on the same axis, making the model as
small as possible. Smooth running noise Low cycloidal pin gears have a large number of teeth,
large overlap factor and mechanism of machine balance, which minimizes vibration and hum.
In the operation, the number of pairs of teeth that are in contact at the same time is large, the
degree of coincidence is large, the operation is stable, the overload capability is strong, the
vibration and the noise are low, and the noise of various specifications of the model is small.
Adjustable speed drive
Reliable use and long service life Because the main parts are made of bearing steel materials,
high strength is obtained by quenching treatment (HRC58~62), and some transmission
contacts adopt rolling friction, so the durability is long. Because the main parts are made of
bearing steel quenching treatment (HRC58-62), and then refined, and the cycloidal teeth and
the toothed sleeve are meshed and transmitted to the teeth to form a rolling friction pair, the
friction coefficient is small, so that the meshing area has no relative sliding. Extremely wear-resistant,
so durable. The design is reasonable, the maintenance is convenient, the assembly is easy to
disassemble, the minimum number of parts and the simple lubrication make the cycloidal pinwheel
adjustable speed drive deeply trusted by users. Compared with other adjustable speed drives of the same power, the weight volume
is less than 1/3. Because it is a planetary transmission, the input shaft and the output shaft are on the
same axis to obtain the smallest possible size.
Adjustable speed drive
Uses:  The cycloidal pinwheel adjustable speed drive adopts the cycloidal pin gear meshing and planetary transmission 
principle, so it is also called the planetary cycloidal adjustable speed drive. The planetary cycloid adjustable speed drive can be widely
used in petroleum, environmental protection, chemical industry, cement, transportation, Textile,
pharmaceutical, food, printing, lifting, mining, metallurgy, construction, power generation and other
industries, as a drive or adjustable speed drive, the machine is divided into horizontal, vertical, double-axis and
direct-coupled assembly. Its unique smooth structure can replace ordinary cylindrical adjustable speed drive and
worm adjustable speed drive in many cases. Therefore, planetary cycloidal adjustable speed drive is widely used in various
industries and fields, and is widely welcomed by users.
Adjustable speed drive
When the input shaft rotates one year with the eccentric sleeve, the movement of the cycloidal wheel be
comes a plane motion with revolution and rotation due to the characteristics of the tooth profile curve on
the cycloidal wheel and the limitation of the pin gear pin on the pin gear housing. When the input shaft
rotates one revolution, the eccentric sleeve also rotates for one week, and the cycloidal wheel rotates
through a tooth difference in the opposite direction to obtain a deceleration, and then the W output
mechanism is used to transmit the low speed self-rotation of the cycloidal wheel through the pin shaft to
the pin shaft. Output the shaft to achieve a lower output speed.

 

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Date

06 September 2019

Tags

Cycloidal Gear Motor

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