In modern agriculture, combine harvester is the key equipment to realize efficient harvesting. In modern agriculture, combine harvester is the key equipment to realize efficient harvesting. Among them, orbital motor, as a kind of compact and reliable hydraulic actuating element, plays an increasingly important role in driving the key functions of the harvester.
1. Principle of operation and core advantages
The core working component of an orbital motor consists of an inner gear ring (stator) and an eccentrically mounted outer gear (rotor) with one fewer tooth than the stator. Under the action of pressurized oil, the rotor moves in a planetary motion (i.e., it rotates and revolves simultaneously) in the inner chamber of the stator. This motion converts hydraulic energy into high torque at low speeds in a continuous and smooth manner.
The main advantages include:
Compact and high power density: provides strong power in a limited space, ideal for agricultural machinery.
High torque output at low speeds: Especially suitable for applications requiring high starting torque and stable operation at low speeds.
Strong anti-pollution ability: the internal flow channel is relatively wide, the clearance of the moving parts is large, the cleanliness requirement of the hydraulic oil is relatively low, and it can adapt to the harsh oil environment in the field.
Durable and shock-resistant: the use of high-strength materials and hardening treatment, can withstand continuous vibration, shock and external particles in the harvester operation, and has a certain degree of overload resistance.
Higher efficiency: Good volumetric and mechanical efficiency helps reduce system energy consumption and heat dissipation needs.
2. Adapting to harsh agricultural environments
Agricultural harvesting operations are challenged by mud, straw debris, drastic temperature changes and high shock loads. The orbital motor demonstrates excellent reliability in such environments thanks to its high resistance to contamination, rugged construction, and ability to withstand shock and vibration, significantly reducing the risk of downtime due to hydraulic system problems.
3. Key applications in harvesters
orbital motor is widely used in several core systems of harvesters:
Walking drive system: In the hydrostatic transmission system, it utilizes its low-speed and high-torque characteristics to drive the walking wheels or tracks of the harvester either directly or through a simple deceleration mechanism. By adjusting the hydraulic oil flow, the travel speed can be infinitely adjusted to ensure the flexibility and stability of the machine in complex terrain such as slopes and mud.
Cutting platform control system: Provide strong and smooth driving force for the rapid elevation of the cutting platform, and support the automatic profiling function of the cutting platform according to the terrain (control the elevation cylinder).
Material Conveyor System: Drive the conveyor chain, agitator, elevator and other mechanisms between the cutting platform to the threshing drum and the cleaning device to the grain bin to provide continuous and stable speed and torque to ensure the smooth and unobstructed flow of crop materials.
Attachment drives: for bin unloading agitators, straw chopping devices or baling devices, etc. The modular design facilitates integration and installation.
4. Development trend and structure optimization
In order to meet the demand for intelligent, efficient and comfortable operation of agricultural equipment, orbital motor is also developing continuously:
Integration and modularization: Integrating the motor with the reduction mechanism, brake or valve group to form a compact functional unit, simplifying the layout of the harvester, and improving the space utilization rate and installation efficiency.
Noise reduction: Optimizing the design of cycloid gears, improving manufacturing precision, and improving the flow distribution structure effectively reduces operating noise and improves the driver's working environment.
Intelligent interface: Integrate the speed sensor or pressure sensor, etc., to provide key data feedback for the intelligent control of the harvester (e.g., autopilot speed control, adaptive adjustment of operating load), and to support the realization of the closed-loop control system.
The above is the orbital motor application , if you want to know more information, please go to our official website.
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