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SQ14SK4Q
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The SQ14SK4Q mounted crane features a maximum lifting load of 14 tons and a peak lifting moment of 350 kN·m, delivering powerful and reliable basic hoisting performance for heavy-duty operation. Its crane arm is fabricated from high-strength structural steel with a proprietary hexagonal cross-sectional structure, which greatly improves the arm’s bending resistance and torsional rigidity, while significantly boosting the overall operational stability of the equipment. Equipped with a single hydraulic cylinder to drive the synchronous telescopic movement of the four-section boom, the machine realizes high-efficiency, stable and dependable hoisting actions in various working scenarios.
Breaking the traditional independent operation mode of handle manipulation and throttle adjustment, this equipment adopts a dual-handle linkage design that enables synchronous control and automatic throttle speed regulation. The optimized speed transition ensures ultra-smooth operation process, allowing operators to complete various lifting tasks effortlessly and stably, effectively reducing operation difficulty and improving construction efficiency.
This innovative device drastically shortens the preparatory and finishing work before and after construction. It enables the vehicle to quickly return to normal driving status within the shortest time frame. Meanwhile, it effectively prevents crane equipment damage caused by idle swing of the hoisting hook during driving, comprehensively improving the driving safety of the whole vehicle.
Aiming at operational negligence or unfamiliar operation of lifting equipment by operators, the built-in overwinder protection device can automatically trigger a stop on the hook upward movement once the limit position is reached. This core safety configuration avoids wire rope breakage and subsequent personal injury and property loss risks, building a solid safety barrier for construction operation.
Technical Item | Unit | SQ14SK4Q Parameter |
|---|---|---|
Maximum Lifting Capacity | kg | 14000 |
Maximum Lifting Moment | t.m | 43.2 |
Rated Matching Power | kw | 41 |
Maximum Hydraulic System Flow | L/min | 80 |
Maximum Hydraulic System Pressure | Mpa | 28 |
Fuel Tank Volume | L | 260 |
Equipment Self-weight | kg | 6455 |
Installation Dimension Space | mm | 1400 |
Rotation Range | ° | 360° Full Rotation |
This crane is widely applicable to urban construction sites and municipal engineering projects, capable of efficiently hoisting precast concrete slabs, steel bars and other building materials. With its strong load-bearing capacity and flexible full-slewing operation performance, it can adapt to narrow and complex urban construction environments, realizing safe, stable and efficient hoisting operations and meeting diversified construction demands.
It is suitable for heavy-load handling of ores, stones and other bulk heavy materials in mining and quarrying working conditions. For special harsh operation environments, operators must strictly ensure ground leveling treatment, dust-proof protection and adapt to local climatic conditions. Complying with standard safety operation specifications and strengthening daily equipment maintenance are essential to guarantee long-term stable and safe operation of the equipment.
The equipment is widely used in logistics yards, warehousing centers, port terminals and other scenarios, supporting efficient loading, unloading and transshipment of heavy cargo and materials. Equipped with 360-degree full rotation function, it can cope with complex and changeable operation conditions, greatly improving the efficiency of large-batch and heavy-duty cargo handling work.
It provides reliable hoisting support for mechanical equipment installation, daily maintenance and large structural component lifting in factory workshops, energy engineering and other projects. The 14-ton rated lifting capacity and superior working radius enable the equipment to fully meet various heavy-tonnage hoisting construction requirements.
This crane model has been successfully exported to overseas regions such as Ethiopia, serving local infrastructure construction projects. With its excellent load performance and strong environmental adaptability, it can operate stably in various harsh working conditions, possessing high practical value and wide application prospects in international engineering markets.
Operation of the SQ14SK4Q crane must be undertaken by professional personnel holding a valid Special Equipment Operator Certificate. Pre-operation inspection is mandatory: fully check the integrity of steel wire ropes, lifting hooks and all safety protection devices to ensure no abnormal conditions. Deploy the outriggers completely on solid and horizontal ground to form stable supporting structure.
Operators must strictly follow the equipment load curve standard with a 14-ton maximum lifting limit, and overloaded operation is strictly prohibited. Keep all operating actions smooth and stable during construction, make full use of the 360° full rotation and four-section boom synchronous telescopic functions to realize accurate positioning of hoisting objects. Always monitor the surrounding working environment and avoid lifting cargo over personnel.
Regular inspection and maintenance of the hydraulic system shall be conducted daily. After finishing all operation tasks, retract the boom completely to the transportation state and cut off the equipment power supply to complete standardized shutdown procedures.
Possible causes: Air enters the rodless cavity of the hydraulic cylinder or minor bending deformation of the piston rod. Solutions: Perform hydraulic system air bleeding treatment or contact professional technicians for precision calibration.
Possible causes: Long-term gravity action causes spool displacement of the main control valve, leading to instantaneous pressure loss in the single cylinder cavity. This is a normal hydraulic system phenomenon. Solution: The hydraulic fluid will automatically replenish pressure during subsequent operation, and the fault will be eliminated after a short period of stable operation.
Possible causes: The oil return pipeline inlet is above the hydraulic oil level; sealing failure of the independent return filter element leads to air mixing caused by return oil impact; or mismatched hydraulic oil model. Solutions: Adjust pipeline installation position, replace filter element seals and use specified standard hydraulic oil.
Possible causes: Low temperature leads to increased hydraulic oil viscosity, rising pump suction resistance and resulting in cavitation noise. Solution: Idle the equipment for several minutes to preheat the hydraulic system before formal full-load operation.
This is an electronic control system failure rather than a hydraulic malfunction. Solution: Inspect and troubleshoot the throttle controller, induction sensors and circuit wiring lines.
Possible causes: Unstable power supply voltage of sensors, signal line electromagnetic interference or poor equipment grounding. Solution: Check circuit voltage stability, optimize signal line layout and reinforce grounding connection.
