Product Description
Inline Transmission Planetary Gearbox Gear Unit For Mixer
Description :
N series of planetary reducers from SGR are widely used for industrial and heavy duty severe applications . planetary reducer feature with compact size, low noise , excellent reliability ,long life . In-line or right-angle planetary gearboxes are available in male and female shaft configurations. The CHINAMFG male shaft solution (splined or cylindrical) is able to withstand strong radial or axial loads on the output shaft. As a leading planetary gearbox manufactory in China , SGR planetary reducer is produced by modular design, combined according to customer requirement, housing material from CHINAMFG with nodular cast iron which can increases gearbox’s rigidity and antiknock, heavy-duty bearing is installed at low-speed shaft, it can bear big radial load due to proportionate distribution of torque ,every CHINAMFG gears are case hardened to get high reliability and long life . SGR planetary reducer have 16 models for different torque range ,each CHINAMFG model have 1-5 stages to achieve different ratios , SGR planetary reducer have wide rang selection of high speed design: cylindrical with key, hydraulic motor, electric motor .Installation in CHINAMFG is multiposition ,various fasten type .
Data Sheet :
| Torque range | 1 Nm | Input | IEC Flange |
| Mechanical rating (n1 = 1500 min-1) | up to 200kW | Electric motor | |
| Gear ratios | 3.15 … 5000 | Solid input shaft with or without fan cooling – inch or metric dims. | |
| Gear unit versions | In line | Applicable AC motors | Integral motors and brake motors |
| Right angle (with bevel gear set) | IEC-normalized motors and brake motors | ||
| Mounting type | Foot | Single and dual speed motors | |
| Flange mounted | Main brake features | DC and AC supply | |
| Torque-arm | Faster brake reaction through electronically controlled rectifier | ||
| Output shaft options | Solid shaft | Main motor options | Thermistors and thermostat sensors |
| Splined shaft | Independent forced cooling | ||
| Female splined shaft | Line driver and push-pull incremental encoder | ||
| Hollow shaft with shrink disc |
| Application: | Motor, Machinery, Marine, Agricultural Machinery, Industry |
|---|---|
| Function: | Distribution Power, Clutch, Change Drive Torque, Change Drive Direction, Speed Changing, Speed Reduction, Speed Increase |
| Layout: | Coaxial |
| Hardness: | Hardened |
| Installation: | Foot Mounted |
| Step: | Three-Step |
| Customization: |
Available
| Customized Request |
|---|
How do planetary gears handle changes in speed and torque distribution?
Planetary gears are capable of effectively handling changes in speed and torque distribution due to their unique design and configuration. Let’s explore how planetary gears handle these changes:
- Speed Changes:
Planetary gears can handle speed changes by utilizing the different gear ratios they offer. By adjusting the sizes and numbers of teeth on the sun gear, planet gears, and ring gear, different gear ratios can be achieved. When the input speed is applied to the sun gear, it gets transmitted to the planet gears, resulting in a specific output speed. By changing the gear ratio, the output speed can be adjusted accordingly. This ability to vary the gear ratio allows planetary gears to adapt to different speed requirements in mechanical systems.
- Torque Distribution:
Planetary gears excel in distributing torque across multiple gear teeth, ensuring efficient torque transmission and load sharing. The planet gears are meshed with both the sun gear and the ring gear, enabling torque to be transmitted through multiple contact points simultaneously. This distributed torque distribution helps in reducing stress on individual gear teeth and enhances the overall torque-carrying capacity of the gear system. The load is shared among the planet gears, preventing excessive wear and minimizing the risk of gear failure.
- Torque Amplification:
Planetary gears can also handle torque amplification, allowing for increased torque output compared to the input torque. By fixing the ring gear and inputting power to the sun gear, the planet gears rotate and contribute to multiplying the torque. The arrangement of multiple gear sets in a compact design enables torque amplification, making planetary gears suitable for applications that require high torque output while maintaining a smaller physical size.
- Load Balancing:
Another aspect of torque distribution in planetary gears is load balancing. The planet gears distribute the load across multiple gear teeth, reducing the concentration of forces on individual teeth. This load balancing capability results in improved gear system durability and longevity. It also helps in minimizing vibration, noise, and wear, ensuring smoother and more reliable operation.
- Flexible Configuration:
Planetary gears offer flexibility in their configuration, allowing for the accommodation of changes in speed and torque distribution. The number of planet gears, the size of the gears, and their arrangement can be adjusted to meet specific application requirements. This flexibility enables planetary gears to handle a wide range of speed and torque variations, making them adaptable to different mechanical setups.
In summary, planetary gears handle changes in speed and torque distribution through their ability to adjust gear ratios, distribute torque across multiple gear teeth, amplify torque, balance loads, and accommodate flexible configurations. These characteristics make planetary gears suitable for applications that require precise control over speed and torque, efficient power transmission, and reliable performance.
Can you explain the process of gear shifting in planetary gear systems?
Gear shifting in planetary gear systems involves changing the gear ratio by engaging or disengaging specific components of the gear set. Let’s explore the process of gear shifting in more detail:
- Clutching and Braking:
The gear shifting process in planetary gear systems primarily relies on clutching and braking mechanisms. These mechanisms selectively connect or disconnect various gears within the system to achieve the desired gear ratio. Here are the key steps involved:
- Clutch Engagement:
To shift to a higher gear ratio, the clutch associated with the gear component that needs to be engaged is activated. The clutch connects the rotating member, such as the sun gear, planet carrier, or ring gear, to the stationary member, allowing torque transmission. This engagement results in a change in the gear ratio, leading to higher speed or torque output depending on the specific gear set configuration.
- Brake Application:
On the other hand, to shift to a lower gear ratio, a brake associated with the gear component that needs to be disengaged is applied. The brake immobilizes or slows down the rotation of the selected gear element, preventing it from transmitting torque. By selectively braking certain components, the gear ratio is altered, resulting in a lower speed or higher torque output.
- Sequential Shifting:
In some planetary gear systems, gear shifting is performed sequentially. This means that one gear component is engaged or disengaged at a time, gradually transitioning from one gear ratio to another. Sequential shifting allows for smooth and controlled gear changes, minimizing the stress on the transmission components and ensuring seamless power transmission.
- Electronic Control:
In modern applications, gear shifting in planetary gear systems is often electronically controlled. Electronic control systems utilize sensors, actuators, and a control unit to monitor various parameters such as vehicle speed, engine load, and driver input. Based on these inputs, the control unit determines the optimal gear shift points and actuates the clutches and brakes accordingly. Electronic control enhances the efficiency, precision, and automation of the gear shifting process.
In summary, gear shifting in planetary gear systems involves the engagement and disengagement of clutches and brakes to alter the gear ratio. By selectively connecting or disconnecting specific gear components, the speed and torque output can be adjusted. Sequential shifting and electronic control systems further enhance the gear shifting process, providing smooth and efficient operation in various applications, including automotive transmissions and industrial machinery.
How do planetary gears contribute to power transmission and gear reduction?
Planetary gears play a significant role in power transmission and gear reduction. Let’s explore how planetary gears contribute to these aspects:
- Torque Amplification:
One of the key contributions of planetary gears is torque amplification. The arrangement of multiple gear sets in a compact design allows for torque multiplication. When the input power is applied to the sun gear, it drives the rotation of the planet gears. The planet gears, in turn, mesh with the ring gear, creating a mechanical advantage that amplifies the torque output. This torque amplification is beneficial in applications where high torque is required while maintaining a smaller form factor.
- Gear Ratio Variation:
Another contribution of planetary gears is their ability to achieve different gear ratios. By varying the number of teeth on the sun gear, planet gears, and ring gear, a wide range of gear ratios can be obtained. The gear ratio is determined by the relative sizes of the gears and the number of teeth on each gear. This flexibility in gear ratios allows machinery to adapt to varying speed and torque requirements, enabling precise control and efficient power transmission.
- Gear Reduction:
Planetary gears are commonly used for gear reduction applications. Gear reduction refers to the process of reducing the rotational speed and increasing the torque output of a power source. In a planetary gear system, gear reduction is achieved by fixing the ring gear and allowing the sun gear to rotate as the input. The rotation of the sun gear drives the planet gears, which in turn rotate the output carrier or arm. The output speed is slower than the input speed, resulting in gear reduction. This gear reduction capability is valuable in various applications, such as automotive transmissions and power transmission systems.
- Efficient Power Transmission:
Planetary gears are known for their efficient power transmission capabilities. The internal gear meshing and the distribution of load across multiple gear teeth result in efficient torque transfer with minimal power loss. The load is shared among the planet gears, allowing for higher torque capacity and reduced wear on individual gear teeth. This efficient power transmission ensures that a significant portion of the input power is effectively transmitted to the output, making planetary gears suitable for applications where energy conservation and optimization are crucial.
In summary, planetary gears contribute to power transmission and gear reduction through torque amplification, gear ratio variation, gear reduction mechanism, and efficient power transmission. The ability to amplify torque, achieve different gear ratios, and transmit power efficiently makes planetary gears widely used in various industries and mechanical systems.
editor by CX 2023-10-07