Release time: 2013-06-21
Hydraulic lifts are widely used in various industries as versatile lifting and loading equipment. These lifts are powered by hydraulic systems, hence they are also known as hydraulically driven lifts. One of the key reasons for their popularity is the simple structure and ease of maintenance, making them a preferred choice for both businesses and individual users.
The hydraulic oil tank plays a crucial role in the system. It stores the hydraulic fluid, helps dissipate heat, removes air bubbles from the oil, and reduces foam formation. In this article, we’ll cover some important considerations when it comes to selecting and maintaining the fuel tank for hydraulic lifts. For more detailed information, feel free to contact Jinan Longhao Hydraulic Machinery Co., Ltd.
When choosing an oil tank for a hydraulic lift, there are several key factors to keep in mind:
First, the capacity of the oil tank should be considered. For mobile equipment, the tank size is typically 2 to 3 times the maximum flow rate of the pump. For fixed equipment, it’s usually 3 to 4 times the pump’s maximum flow rate. This ensures sufficient oil supply and proper cooling during operation.
Second, the oil level within the tank must be carefully monitored. When all hydraulic cylinders are fully extended, the oil level should not drop below the minimum mark. Conversely, when the cylinders are retracted, the oil level should not exceed the maximum level. Maintaining the correct oil level is essential for optimal performance and system longevity.
Third, the design of the oil tank itself is important. Traditional tanks with partitions may not effectively separate sediment. To improve efficiency, a vertical baffle should be installed along the length of the tank. There should be space between the end of the baffle and the tank wall, allowing for better circulation of the hydraulic fluid. The inlet and outlet ports of the hydraulic pump should be placed on opposite sides of the baffle, maximizing the distance between the oil intake and return lines. This arrangement enhances heat dissipation and improves overall system performance.
In reality, most of these issues are already addressed by manufacturers. However, we’ve included this information to help users gain a deeper understanding of the equipment. By knowing how the system works, users can better maintain and troubleshoot their lifts, ensuring smooth and safe operation over time.
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Comprehensive Function Features
Direct-To-Floor
By the principles of distance, automatically generate the smooth curves from start of parking, no crawling and directly stop in the levelling position.
Optimum Velocity Profile Efficiency
The elevator controller will optimise the velocity profile based on the desired travel distance demand instead of floor number.
Advanced Door-Opening
Under the automatic operation state, the speed during stopping is less than 0.1 m/s and the gate signals effective, system shorts door-lock signal through advanced door-opening module and then opens the door ahead of time to enhance the elevator efficiency
Category Door Open Holding Set-Time
System can automatically identify different time to keep the open calls to open the door, instructions to open the door, the door to protect open, delay to open the door and to open the door inaccordance with the setting time.
Re-levelling
This may occur when the lift stops at the floor station, and a large number of persons or goods enter or leaves. The levelling fluctuates because of the elastic deformation of elevator Wire Rope and the rubber. System is allowed to run automatically at the relevelling speed to the levelling station with the door open.
Self-Rescue Levelling
The elevator is in its normal operating state, but doesn`t stop at the correct level. If it meets the safety requirements to run, the lift will automatically run slowly to the nearest floor area, and then open the door.
Emergency Inertia Rescue Mode
Applicable for permanent-magnet synchronous motors only. When there is a power failure, system will short-circuit the motor phases through its contactor and produce a restraining torque when in motion. Based on the elevator inertia, the elevator will slide slowly and controller will open the elevator door when it reaches levelling position.
Emergency Self-Rescue Time-Out Protection
When elevator is at balance load or rescue device power capacity is inadequate. Long rescue time lapse is expected and accident may occur. This function enables the system to self-disable the emergency operation.
Elevator Position Auto Calibration
Each time the elevator enters the terminal floor zone, system will self-calibrate the position counter with respect to the 1st slowdown limit switch so that elevator over travel operation will be eliminated.
Fire Alarm Rescue Function
Enable user to preset the elevator designated homing floor when fireman mode is enabled
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