What are the operating precautions for hydraulic pile drivers?

Before the hydraulic pile driver works, the following preparations should be made:

1. The operator must go through professional practice to understand the structure, principle, operation and maintenance methods of the pile driver he operates. And hold the operation certificate to operate.

2. The power unit, winch, hydraulic device and electrical device configured by the pile driver should be operated according to its operating procedures.

3. The electrical fault of the pile driver must be handled by an electrician.

4. The commissioning, installation, disassembly, and hauling of the pile driver should strictly implement the relevant regulations.

5. In case of thunder, rain, snow, fog and wind above level 6 and other bad weather, the operation should be stopped, when the wind speed exceeds level 7 or there is a strong typhoon warning, the pile driver should be parked in the windward direction, and if necessary, the frame should be put down. The pile driver must take lightning protection measures, and in case of lightning, personnel must stay away from piling.

6. Before the operation, the first dry operation, until the state of each component is determined to be normal.

7. If the pile clamp is used, the pile should be clamped before the operation, and the pile clamp should not be loosened during operation. When a job is stopped. The vibration of the vibratory hammer must be stopped first, and then the pile clamp must be released.

8. When installing the vibrating hammer, the vibratory hammer must be transported to within 2mm in front of the pile frame.

9. There must be a special person to command the pile driver when walking, rotating and pairing the pile.

10. The pile driver should brake slowly, and the continuous operation in the same direction should be less than one week.

11. It is strictly forbidden to carry out more than two actions at the same time, such as lifting vibrating hammer, hoisting material, hanging pile, walking and rotating.

12. It is strictly forbidden to overload the elevator.

13. The operator cannot leave the post without authorization.

14. In the following cases, the machine should be stopped immediately for maintenance.

Parts on the column and diagonal brace fall off.

The fastening bolts of the vibratory hammer motor are loose, the guide device is loose, there is an impact sound in the exciter, the temperature rise of the bearing is too high, and the connecting bolts between the vibratory hammer and the pile or other devices are loose.

Electrical and hydraulic devices are malfunctioning.

15. If the amplitude of the vibration hammer damping beam is too large for a long time, the machine should be stopped to find out the cause.

16. The verticality of the pile should be corrected in time when the pile is sunk. After the pile is 3m into the soil, it is strictly forbidden to use the actions of the pile driver to walk or rotate to correct the verticality of the pile.

17. The pile frame column that cannot be tilted and adjusted left and right should be driven at the same time when the front and rear of the adjustment column should be tilted.

18. When the operation stops every day, the pile pipe should be sunk below the soil, or the vibrating hammer should be put on the ground, cut off the power supply of the pile driver, so that all braking takes effect, and when the operation is stopped for a long time, the pile driver should be parked on a solid and flat ground, and the vibratory hammer must fall down and be cushioned, and rainproof measures should be taken.

19. When the pile frame is lifted and the landing frame, the winch drum should be checked whether it is reliable, and then the landing frame should be lifted and landed according to the procedures specified in the instruction manual.

20. When the walking and rail-type pile driver is not working, it should be parked in the middle of the track or track, and the rail clamp must be clamped.

21. When disassembling the tubing, ensure that the pipe joints are not polluted.

Shandong China Coal Group hydraulic pile driver has been exported to the United States, France, Canada, Indonesia, Russia, Vietnam, Australia, South Korea, Iran and other countries, and has won unanimous praise from customers.

The safety of the pile driver needs to be kept in mind, the construction site itself has a higher risk factor than other places, and paying attention to every detail is the key. Zhongda Consulting will give you a detailed introduction to the safety matters of pile drivers.

Pile drivers can often be seen on the construction site, and there will be many requirements for such large equipment when operating, not only to ensure the normal use of the equipment, but also to ensure the safety of operators.

1.The power unit, winch, hydraulic device and electrical device configured by the pile driver should be operated according to its instruction manual.

2.The operator should be specially trained, familiar with the performance, structure, use and maintenance methods of the pile driver to be operated, and can only operate after holding an operation certificate.

3.Before operation, a comprehensive understanding of the surrounding environment, buildings, and geological conditions of the work site should be carried out.

4.The assembly, commissioning and disassembly of the pile driver should be in accordance with the procedures specified in the instruction manual.

5.In case of severe weather such as strong winds or heavy rain, heavy snow and fog above level 6, the operation should be stopped. When the wind force is greater than level 7, the pile driver should be parked in the windward direction, the diesel hammer should be lowered, and the windproof cable should be added, and the pile frame should be lowered if necessary.

The pile driver should have lightning protection measures, and personnel should stay away from the pile driver in case of lightning.

6.The wire rope should be fixed with a wedge-shaped joint, pressure plate, rope clamp, pressing joint or braiding corresponding to the diameter of the wire rope. When the wire rope is braided and fixed, the length of the braided part should not be less than 20 times the diameter of the wire rope, and should not be less than 300mm, and the braided part should be bundled with thin steel wire.

When the rope clamp is used to destroy the Hu fixed joint, the number of rope clamps should not be less than 3, and the number of rope clamps is related to the diameter of the wire rope; The spacing of the rope clamp should not be less than 6 times the diameter of the wire rope, and the distance between the rope head and the rope clamp after the most slippery block should not be less than 140mm, and be bundled with thin steel wire; The rope clamp holder should be placed on the stressed side of the wire rope when working, and the U-bolt should be buckled at the tail end of the wire rope, and the rope clamp should not be staggered forward, and the wire rope should be tightened again after being stressed.

7.When installing the diesel hammer, the diesel hammer should be transported to the pile frame column within 2m of the guide directly in front.

8.When working at height, the operator should wear a seat belt.

9.When the piling rig is running, no one is allowed to enter under the raised diesel hammer.

Before the construction of the pressure grouting pile, the situation of the pile foundation operation area should be determined to ensure the stability of the pressure grouting pile construction

1) The foundation of the operation area should be treated before the pile driver is in place, and the bearing capacity of the treated foundation is required to reach 160kN2, if it is not reached, it needs to be reinforced with a subgrade box to ensure that the foundation does not occur uneven settlement.

2) The pile position is retested before the drilling rig is in place, the drill bit is aligned with the pile position during construction, and the drilling rig is stabilized to ensure that the drilling rig is flat in construction, and the lower end of the drill pipe is 10 20cm away from the ground, aligned with the pile position, and pressed into the soil, so that the deviation of the pile center is not greater than 10mm of the family size.

3) After the pile driver is in place, keep the pile driver stable, adjust the turret vertically, and the connection of the drill pipe should be firm.

4) Ensure that the center of the drill pipe and the vertical center of Zhaoyan in the casing are on the same plumb line.

5) Before the drilling rig starts, the soil clods and residual concrete in the drill bit of the drilling rig should be cleaned up.

6) Check the connecting parts before construction.

1. Piling machine.

When working, there should be a special person to command. Commanders and operators should check each other's signals before working. Close cooperation should be done in the work.

2. At the beginning, use the electric bell or other square cover type to send a signal to notify the surrounding people to leave.

3. The plane of the pile driver and the pile cap, the pile cap and the pipe string (or pile) should be flattened, the connecting bolts should be tightened, and whether there is looseness should be checked frequently.

4. The start of the pile driver should be accelerated from low speed to high speed.

5. The pile driver should pay close attention to the indication of current and voltage on the control panel during work. If abnormal noise or other abnormal conditions are found, the machine should be stopped immediately for inspection.

6. Always check the bearing temperature and whether the bearing cover screw book is loose, and strictly check the eccentric iron.

Whether the coupling screws are loose or not prevents accidents from happening.

7. When sinking, it is strictly forbidden to stand around the pipe string (or pile).

8. When the pile driver cooperates with water injection and mud suction, it should contact the relevant personnel in advance and take care of each other in the work.

9. When connecting the pipe string or pile and installing the pile cap, the staff must wear a safety belt.

10. In the process of sinking, it is strictly forbidden to carry out mechanical maintenance and maintenance work.

Wuhan Jingtuo Nuozhang Municipal Engineering **** will answer for you:

There are several reasons for the pile head to be broken, on the one hand, it is related to the situation at the top of the pile, and on the other hand, the pile driver drop hammer is too high, or the soil layer is hard, or there are obstacles below. For such a situation, you can add a pile cap, if it is an obstacle, you can clean it.

During the working process of the pile driver, it may also encounter the phenomenon of pile body beating and pile hammer rebound. The reason is that the pile tip encounters obstacles or hard soil layers, the pile body is too curved, and the pile is too long; The drop is too high. In this case, the cause should be checked first, and measures should be taken to make the pile pass through or avoid the obstacles, such as the soil is not deep should be avoided or re-hit; Hit the hammer lightly and change the height of the drop hammer.

The pile cannot be driven down or cannot reach the design elevation, and the reason for this situation is that there are large stones in the old buried objects or in the soil; The piling interval of the pile driver is too long, and the friction resistance increases; The pile hammer is too light or the drop hammer is too low; The pile spacing is too small or the pile is driven from the edge to the **, so that the soil is compacted. In this case, the old buried material should be removed first; Increase the weight of the hammer or increase the height of the drop weight.

Yantai Jinshan series high-frequency hydraulic vibration pile driver is specially used with excavators, effectively using the hydraulic power of the excavator, giving full play to the characteristics of strong mobility and flexible operation of the excavator, so that the construction of pile foundation engineering to a new stage, greatly save costs, improve work efficiency, let your excavator achieve multi-purpose, improve investment efficiency.

The hydraulic pile driver is powered by oil pressure, and the hydraulic pressure can be adjusted according to the different soil qualities of the formation to achieve the appropriate impact force for piling, which is a new type of pile driver. The hydraulic pile driver is composed of a pile hammer, a pile frame and ancillary equipment. The pile hammer is attached between two parallel vertical guide rods (commonly known as gantry) in front of the pile frame, and is hoisted with a lifting hook.

The pile frame is a steel structure tower, and then the rear roommate winch is used to discard the pile and pile hammer. There is a guide frame composed of two guide rods in front of the pile frame, and the pile is accurately poured into the formation according to the design orientation with a hole in the piling direction.

The basic technical parameters of the pile driver are the weight of the impact part, the kinetic energy of the impact and the frequency of the impact.