I. Product Positioning
This electric hydraulic pump acts as the core power source for the full set of prestressing tensioning systems used in civil engineering and bridge construction. It outputs stable high-pressure hydraulic oil to support all kinds of matched hydraulic equipment, including center-hole tensioning jacks, front-grip jacks, strand embossing machines and extrusion equipment. With its built-in electric control system, the unit switches hydraulic oil circuits freely, so as to accurately control the extension and retraction actions of various hydraulic cylinders on site.
II. Main Components and Practical Functions
Hydraulic Oil Tank: The bottom yellow tank is responsible for storing circulating hydraulic oil. Its integrated solid base effectively buffers vibration generated during long-term continuous operation, keeping the whole machine stable during on-site tensioning work.
Drive Motor: Installed behind the pressure gauge, the gray driving motor matches the built-in plunger pump. It provides stable power support for the pump set to continuously generate standard high hydraulic pressure required for prestressing construction.
High-Pressure Pressure Gauge: This gauge displays real-time hydraulic output pressure. Construction staff can convert the pressure data into actual tensioning force through fixed conversion coefficients, which serves as the core reference data for on-site tension stress monitoring and construction quality control.
Solenoid Directional Valve Assembly: The central black valve group is the key control component of the equipment. It relies on electromagnetic signal switching to change the flow direction of the two independent hydraulic circuits, realizing free switching between jack tensioning and cylinder retraction reset states.
Handheld Wired Remote Controller: The supporting orange handheld remote control is specially used for on-site operation. Workers can remotely control equipment pressurization, pressure relief and circuit direction switching. Operating away from the jack and anchor working area greatly avoids potential safety risks caused by strand breakage or wedge popping during tensioning.
Hydraulic Interface: Two reserved oil ports under the valve assembly are connected with high-pressure hydraulic hoses, which correspond to the tensioning and retraction oil ports of various hydraulic tools respectively, forming a complete hydraulic circulating working system.
III. Core Product Advantages and Performance Features
Electric Switching Control, Safer and More Convenient Operation
Different from traditional manual reversing pumps, this equipment adopts solenoid valve matching handheld remote control mode, completely canceling manual lever operation. On-site operators can finish all tensioning actions at a safe distance, effectively avoiding hidden dangers in high-risk tensioning areas. The equipment is equipped with independent function keys for tensioning, retraction, pressure holding and pressure relief. The operation logic is simple and intuitive, with low learning cost, and new workers can quickly master the on-site operation process.
Stable and Accurate Pressure Regulation Performance
Fitted with high-precision and anti-vibration pressure gauges, the equipment presents clear and stable data readings even in complex vibrating construction environments. It can accurately control hydraulic pressure changes in the process of staged tensioning and pressure stabilization, fully meeting the standard staged loading and pressure holding requirements of prestressing projects. The supporting high-pressure plunger pump realizes linear and stable pressure rise without instantaneous pressure surge, effectively reducing the impact load on jacks, anchors and other matching parts, and protecting the whole set of equipment.
Wide Compatibility and Strong On-Site Adaptability
Dual hydraulic outlet design enables wide matching with all common double-acting hydraulic equipment on construction sites, covering front-grip single-strand jacks, large-tonnage hollow bundle tensioning jacks, steel strand extruders, embossing machines and flange jacking cylinders. The equipment supports conventional 380V construction industrial power supply, and can also be customized to 220V voltage version. It is applicable to both outdoor construction sites and indoor prefabrication processing plants. The large-capacity oil tank ensures continuous long-hour tensioning operation, with slow oil temperature rise and stable long-term working state.
Solid Structure and Low Failure Rate
The integrated integral valve group design reduces excessive intermediate pipeline connections, fundamentally lowering the probability of high-pressure oil leakage during operation. The overall frame structure is sturdy and durable, convenient for on-site hoisting and frequent transfer with the construction team, and can adapt to long-distance mobile construction in different working areas.
