Piling machinery, a type of equipment that plays a crucial role in pile foundation construction, encompasses multiple functions including drilling, pile driving, and pile setting. They typically consist of two main parts: a pile hammer and a pile frame. The pile frame is not limited to specialized equipment; it can also be mounted on excavators or cranes to complete the pile driving task. Piling machinery, characterized by its high specialization and small production batches, plays an indispensable role in various foundation construction projects.#cfa piling machine#
Among them, rotary drilling rigs, as a widely used hole-forming machine in building foundation engineering, are particularly suitable for soil layers such as sandy soil, cohesive soil, and silty soil. Their rated power ranges from 125-450kW, and the power output torque reaches 120-400kN·m. They can complete holes with a maximum diameter of 1.5-4m and a depth of 60-90m, fully meeting the needs of large-scale foundation construction.
These drilling rigs are equipped with advanced equipment such as a hydraulic crawler-type telescopic chassis, a self-lifting and folding drill mast, and telescopic drill rods. They also feature automatic verticality detection and adjustment and digital display of hole depth. The rotary drilling rig employs hydraulic pilot control and load sensing technology, making operation more convenient and comfortable. The main and auxiliary winches are designed to meet diverse site requirements. Furthermore, the rig can be used with different drilling tools to handle various drilling operations, including dry, wet, and rock drilling. It can also be equipped with long augers, diaphragm wall grabs, vibratory pile hammers, and other equipment, enabling multi-functional foundation construction.
Experts predict that demand for rotary drilling rigs will remain strong in the domestic market for the next few years.#cfa piling machine#
A hydraulic grab bucket is a highly efficient working device that uses a hydraulic power source to drive hydraulic cylinders, which in turn control the opening and closing of two combined buckets or multiple jaw plates to grab and unload bulk materials. Grabs composed of multiple jaw plates are also often called claws and are widely used in various applications.
A pile driver is a type of piling machinery that uses static pressure to drive piles into the ground section by section, making it suitable for piling operations in soft soil layers. This machinery plays a crucial role in piling construction for underground railways, seaports, bridges, reservoirs, power stations, offshore oil platforms, and national defense projects.
Furthermore, down-the-hole (DHH) rock drilling technology has also attracted considerable attention. This technology effectively reduces energy loss when the drill rod transmits impact energy by submerging the impactor into the hole, thereby reducing the impact of hole depth on drilling efficiency. Down-the-hole (DH) drilling primarily relies on DH rigs. Commonly used models in my country's underground mines include the YQ-80, YQ-100, and QZ-165, which can efficiently drill deep holes with diameters of 80-165 mm in rock with a high hardness coefficient.
1. The semi-walking diesel hammer rig, an improved version of the front-walking tubular roller pile frame, not only saves workers time in moving sleepers but also significantly improves work efficiency and makes operation easier.
2. The fully walking pile driver, a further upgrade from the semi-walking pile driver, achieves fully hydraulic control, eliminating the need for workers to perform heavy tasks such as moving sleepers and hanging wire ropes, thus greatly saving manpower and time.
3. The hydraulic hammer rig is a recently launched innovative piece of equipment. Its unique feature is its superior environmental performance; it operates with low noise, no smoke or oil emissions, minimizing its environmental impact.
4. Static pile driving equipment operates without noise or vibration, and emits no pollutants, minimizing environmental impact. Therefore, it is ideal for pile foundation projects in soft soil areas, urban centers, or densely built-up areas, as well as for factory expansion projects requiring high precision.
5. Small rotary drilling rigs, with their compact and flexible design, are well-suited for small-scale cast-in-place pile projects in rural areas. They can easily drill pile holes with diameters of 500-1000cm, meeting the needs of various small-scale projects.
Standard Operating Procedures for Piling Machinery
(Detailed operating procedures can continue here)
1. Before installing the pile driver, the site must be leveled to ensure the ground bearing capacity reaches at least 35 kPa.
2. During installation, the distance between the two longitudinal traveling mechanisms must be strictly controlled to ensure accurate alignment of the chassis platform.
3. When connecting the power supply, the voltage must be carefully checked to ensure it is within the rated range.
4. When connecting hydraulic lines, avoid forced bending and take care to prevent excessive hydraulic oil loss.
5. Before installing the counterweight, all fasteners must be checked; the counterweight must not be installed until they are tightened.
6. After installation, the entire machine should be fully test-run, especially the crane used for pile lifting, which must undergo a full-load test lift to ensure safety.
7. Before operation, all transmission mechanisms, gearboxes, protective covers, and other components must be carefully inspected to ensure they are in good condition and securely connected.
8. Simultaneously check the crane's hoisting and luffing mechanisms, as well as the lifting gear, wire ropes, brakes, etc., to ensure they are working properly. 9. Also check the cable surface for damage, ensure the protective grounding resistance meets specifications, verify the power supply voltage is normal, and confirm the rotation direction is correct.
10. The lubricating oil and hydraulic oil levels must meet specifications. The hydraulic system must be leak-free, and the hydraulic cylinders should operate flexibly.
11. In winter, remove snow from the machine and ensure the work platform has anti-slip measures.
12. During pile driving operations, unified command is required. Pile driving personnel and pile hoisting personnel should maintain close communication and cooperation.
13. Pile driving operations must not be performed before the pile driver's motor reaches normal operating conditions.
14. When the crane lifts a pile into the clamping mechanism for pile splicing or insertion, ensure the hook has safely disengaged from the pile before pile driving begins.
15. During pile splicing, the previous pile section should be raised to approximately 350-400mm. Do not release the clamping plate at this time.
16. During pile driving, strictly follow the pile driver's technical performance specifications. Do not overload the machine and avoid excessive force or impact.
17. When raising the pile driver, ensure that the four raising cylinders operate alternately in pairs, with each stroke strictly controlled within 100mm. If operating a single raising cylinder, the stroke must not exceed 50mm.
18. During pile driving, non-operating personnel must maintain a distance of at least 10m from the pile driver, and standing under the stacking arm of the stacking machine is strictly prohibited.
19. Maintain the verticality of the pile during pile driving. If underground obstacles cause the pile to tilt, do not use the pile driver's movement to correct it. Instead, pull out the pile, remove the obstacle, and re-insert the pile.
20. If slippage occurs between the clamping mechanism and the pile side, do not arbitrarily increase the hydraulic cylinder pressure to force operation. Identify and resolve the cause of the slippage before continuing pile driving.
21. If the pile's penetration resistance is too high, preventing it from reaching the design elevation, do not arbitrarily add counterweights. Protect hydraulic components and parts from damage. 22. When the pile top cannot reach the design elevation, the top portion of the pile should be removed. Forcing the pile body forward using the pile driver's movement is strictly prohibited.
23. If pile driving causes the surrounding soil to bulge, affecting the movement of the pile driver, the bulging portion should be leveled; forced passage is prohibited.
24. When the pile driver is moving, the inclination angle between the long and short boats and the horizontal plane must not exceed 5°. During longitudinal movement, both handles must be operated simultaneously; operating only one is prohibited.
25. During the lifting process, the boat-shaped track must not press on the top of a single pile that has already been driven into the ground.
26. The use of the crane and winch mounted on the pile driver must strictly adhere to relevant regulations.
27. After operation, the short boat should be moved to the middle position and parked on a level surface. Simultaneously, ensure that all hydraulic cylinders are fully retracted, the crane hook is raised to the highest position, and all brakes are engaged. Finally, the exposed piston rod should be cleaned.
28. After the operation is completed, the controller must be set to the "zero position," and the power supply to each part must be disconnected in sequence, and doors and windows must be locked. If used in winter, all accumulated water must be drained.
29. If the site needs to be moved, disassembly should be carried out according to the prescribed procedures, and the equipment should be transported by truck. During disassembly, all oil pipe joints must be fitted with blind bolts to prevent dust from entering, and care must be taken not to forcibly bend the hydraulic hoses.#cfa piling machine#
