Kunshan Jieyudeng Intelligent Technology Co., Ltd. , https://www.jerrytape.com
Hydraulic suspension systems for tractors are typically categorized into three main types: split hydraulic systems, semi-split hydraulic systems, and integral hydraulic systems. Each type offers different levels of control and functionality depending on the tractor’s intended use and the farming tasks involved.
Proper operation of a separate hydraulic system is crucial to ensure smooth performance and avoid damage. When lifting an implement, the handle should be released as soon as it reaches the raised position. Once the implement is at its highest point, the handle will automatically return to the neutral position. If the implement needs to be lowered or adjusted for tillage, the handle should be moved to the floating position. In this mode, the handle won’t automatically return to neutral, so it must be manually reset when needed.
The strong drop function is unique to double-acting cylinders and is often used when the implement needs to be forced into the soil. However, it should not be held in this position for extended periods, as it can cause the implement to drop suddenly, potentially lifting the tractor and creating excessive tension that could break the cylinder's bottom ring.
Using the neutral position for farming is generally discouraged, as it can place unnecessary strain on high-pressure hoses, increasing the risk of damage. Similarly, when moving the handle between positions, it should not be left in between for long, as this can cause the oil pump to overheat due to restricted flow.
For semi-split hydraulic systems, correct joystick usage is essential. When adjusting the tillage depth, the position adjustment lever should first be set to the lifting position. The height is determined by where the lever is placed, and only the force adjustment handle should be used to lift the implement. After selecting the desired depth, the positioning wheel should be tightened to ensure consistent performance each time.
When using the position adjustment feature, the force adjustment handle should be in the highest lifting position before making any changes. The position adjustment handle alone should then be used to raise or lower the implement. Once the desired positions are set, the positioning wheel can lock the handle in place for stability.
During long-distance transport, the implement should be raised to the transport position, and the handle should be locked using the positioning wheel. The descending speed adjustment wheel should also be fully tightened to prevent accidental lowering and ensure safe transport.
It is important not to pull the position adjustment lever into the “hydraulic output†area when not in use, as this can cause the safety valve to open frequently, leading to oil pump wear and power loss.
Integral hydraulic systems combine all components—power, control, and working parts—into a single unit, eliminating the need for a separate oil tank. The working fluid is typically the gear oil from the rear axle.
In an integral system, the fan-shaped outer handle is fixed in the “light-deep†range. Pulling the handle to the “fast†mark causes the implement to descend quickly, while pulling it to the “slow†mark results in a slower descent. Moving the handle within the “up and down†section allows for height adjustments relative to the ground.
When adjusting the force during tillage, the inner handle controls the descent speed in the “fast-slow†section, while the outer handle adjusts the depth in the “deep-shallow†section. During plowing, the handle is usually moved up and down without major changes to the outer handle.
For position adjustment, the handle should be operated in the “up and down†section, with the outer handle positioned below the “deep†mark on the sector plate. When transporting, both handles should be in the highest lifting position and locked with the positioning wheel. The outer handle should remain in the “deep-shallow†section, and both handles should not be pulled upward simultaneously, as this could leave the system in a hydraulic output state, causing the safety valve to open unintentionally.
When using the hydraulic output, the inner handle should be set to the desired descent speed in the “fast-slow†section, while the outer handle is pulled up to the hydraulic output position. Slightly pushing it forward places the system in the neutral state, and pushing it further initiates the descent.
Finally, when the hydraulic pump is not in use, the eccentric shaft clutch handle should be moved to the “off†position to prevent unnecessary wear on internal components. Always ensure the clutch is fully engaged when operating the handle.