Features: Displacement synchronization accuracy ≤± 0.2mm
Uses: To achieve multi-point control, it can perform functions such as heavy-duty weighing, synchronous jacking, synchronous jacking, synchronous jacking, synchronous landing, synchronous jacking in equal proportions, attitude leveling
This system uses hydraulic driving, pressure and displacement closed-loop automatic control mode to realize multi-point control, widely used in heavy load weighing, synchronous pushing, synchronous lifting, synchronous lowering, equal proportion lifting, attitude leveling and automatic voltage regulation etc.
Pump motor is controlled by frequency conversion speed regulator, depending on adjusting the frequency of the power supply to change the motor speed, which achieves the purpose of output flow can be regulated continuously. Accurate control on lifting speed to realize synchronous control of cylinders can be achieved by matching with proper electric control device and monitoring device.
● Displacement Precision ±0.2mm
● Working Voltage: AC 380V/50Hz (Three-phase, five wire system)
● System Max. Pressure: 70MPa
● Control Pattern: Button and Screen Touch
● Control Interface: HMI
● Control Points: 2,4,6,8
● Expansion: 1-99
● This system is composed of 4 pumps, 4 sets of frequency conversion speed control devices, 4 sets of control valve groups, electric control system and stroke sensors.
Since the bottom surface of the workpiece may not be flat, a conforming function is integrated into the system. This ensures the load is evenly distributed among the jacks and establishes a consistent starting point for synchronous operation.
Before synchronous lifting, this function is activated. The jacks will rise simultaneously, but each individual jack stops as soon as it makes contact with the workpiece. The remaining jacks continue to rise until all of them are in contact. Following this, each jack uniformly increases its pressure to approximately 5Mpa (this conforming pressure can be set on the industrial PC). The jacks then automatically stop, and this exact position is recorded as the synchronization's zero point.
This system features four sets of displacement sensors, strategically placed at key control points. These sensors provide real-time, accurate measurements of the load on each hydraulic jack as it moves. Additionally, a balance valve is integrated to ensure the jacks operate under controlled oil flow during both lifting and lowering. This valve reliably holds pressure, preventing the workpiece from unintended descent and allowing the jacks to securely support the load even during a power outage. Our system is designed for high-tonnage, long-stroke jacks and is known for its fast lifting speed.
The electronic control system is the key to achieving synchronous movement. It is based on closed-loop control system theory, using the displacement signal of the moving load as the controlled parameter and the pressure signal generated within the hydraulic jack's force chamber as the reference.
Sensors collect these signals and transmit them to the controller. The controller processes these signals, compares them to the input tolerance values, and, when a controlled point is at risk of exceeding this tolerance, sends a signal to the corresponding variable frequency drive. This shuts off the hydraulic pump, limiting the jack's upward or downward movement at that point. Similarly, when feedback indicates that a stopped point is falling behind, the controller signals the variable frequency drive to restart the hydraulic pump, allowing the jack to resume its movement.
Through these precisely controlled actions at each point, the entire system achieves a state of constant, synchronous motion.
● The continuous flow control provides smooth and stable lifting and lowering for heavy-duty applications.
● The controlled oil inflow and heavy-load priority lowering hydraulic circuit ensures high-precision synchronization not only during lifting but also while lowering the load.
● The process protection function of the balance valve prevents common cylinder expansion accidents during multi-jack lifting.
● This system's two-point synchronous lifting capability can be expanded to 32 or more points, up to a maximum of 99 points. In multi-point synchronous operation, in addition to maintaining positional synchronization, the system can also adjust the load distribution at each support point according to user requirements.
● Precision Lifting: The system features completely independent load cells and high-precision displacement sensors.
● Synchronous Lifting: Features dual synchronization control (force and displacement) that is automatically activated as needed during the operation.
● Safety: We use multiple hydraulic valves and a smart program to ensure secure lifting operations and protect data.
● Data Integrity: We use multi-level data permissions and a "foolproof" operating system to ensure data authenticity.
● Controllably Authentic Data: Lifting data can be uploaded to the equipment database all at once, allowing you to recall and use it for subsequent lifting operations.
● Traceability: The lifting results are automatically recorded in the database, where they can be reviewed, printed, or downloaded.
| Model | Points | Synchronous Precision | Motor Power | Voltage | Working Pressure | Flow | Oil Tank Capacity | Weight | Dimensions |
| (mm) | (KW) | (AC/V) | (MPa) | (L) | (L) | (kg) | (mm) | ||
| KET-DBTB-2A | 2-point synchronization | ≤±0.2 | 1.1X2 | 380 | 70 | 1×2 | 110 | 700×870×1250 | 335 |
| KET-DBTB-2B | 2-point synchronization | ≤±0.2 | 2.2X2 | 380 | 70 | 2×2 | 110 | 700×870×1250 | 375 |
| KET-DBTB-2C | 2-point synchronization | ≤±0.2 | 5.5X2 | 380 | 70 | 4×2 | 180 | 960×960×1300 | 525 |
| KET-DBTB-4A | 4-point synchronization | ≤±0.2 | 1.1X4 | 380 | 70 | 1×4 | 160 | 1100×875×1250 | 525 |
| KET-DBTB-4B | 4-point synchronization | ≤±0.2 | 2.2X4 | 380 | 70 | 2×4 | 160 | 1100×875×1250 | 600 |
| KET-DBTB-4C | 4-point synchronization | ≤±0.2 | 5.5X4 | 380 | 70 | 4×4 | 280 | 1500×960×1300 | 910 |
