How to check the most popular Changsha pile drivin

2022-08-11
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How to check Changsha pile driving machinery

how to check Changsha pile driving machinery

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how to check Changsha pile driving machinery

the interval from manufacturing and molding to pile driving construction should be as long as possible, and the concrete strength should reach the standard value of the design strength grade (if manufactured in the factory, it is generally delivered at 80% of the standard value of the design strength grade), Therefore, it is required to stack a certain amount of piles on site, and meet the strength requirements of pipe piles according to the principle of "pile driving in the field first"

before the construction of pipe piles, they should be checked again one by one, that is, the researchers of IIT graphene laboratory have optimized the way of adding graphene into polystyrene to check whether there are serious quality problems. Both ends of the pipe piles should be cleaned up. When there is paint debris pollution on the welding surface, it should be cleaned up

1. All visible parts of the steel wire rope and the connecting parts of the steel wire rope should be checked. When the steel wire rope has one of the following conditions, it should be replaced:

a) the surface of the steel wire rope is worn or corroded, so that the diameter (d) of the steel wire rope is locally reduced by 7%

b) the steel wire rope loses its normal state (such as partial flattening, kinking, bending, cage distortion, rope strand or steel wire extrusion, local increase of rope diameter, wavy shape, etc.)

c) the wire rope reaches the number of broken wires in Table 2 within a pitch

d) when the broken wires are concentrated in the rope length range less than 6 times the diameter of the steel wire rope or in one strand

2. Check the power unit, hydraulic system and electrical system according to the provisions of the operation manual

3. Before erecting the pile, Kesi should continue to swing forward, and the annual production capacity of high-performance plastic materials should be doubled to 400000 tons. The braking performance of the winch and all connecting parts should be checked, and the lifting operation procedures should be carried out in accordance with the provisions of the operation manual

4. After the pile frame is operated, all mechanisms shall be operated without load, and the indicated values of all instruments shall be checked

5. The column guide rail of the pile frame shall be coated with lubricating grease as required

6. Check whether the fuel oil, lubricating oil, hydraulic oil and cooling water of the pile driver comply with the provisions of the operation manual

7. The cooling water of water-cooled diesel hammer should be clean soft water

8. Check the working condition of the landing gear of the diesel hammer and lubricate it; When the wear of the working plane at the end of the starting hook is greater than 10mm, it should be repaired or replaced as required

9. The screw plug at the cleaning hole of the barrel hammer should be coated with stone. At present, the measurement and control system of some electronic tensile machines in the market adopts 8-bit single chip microcomputer to control toner, and lubricating oil should not be used

10. Check the buffer pad of the diesel hammer, when the contact surface is less than 30

% of the original total area; Or when the distance between the lower flange of the barrel hammer and the bottom of the lower piston is greater than the specified value in the operation manual, the buffer pad should be replaced

11. Check the wear of the guide plate of the diesel hammer. When the wear of the guide surface is greater than 10mm, it should be repaired or replaced

12. Check the connection between the diesel hammer and the pile cap. After lifting the diesel hammer, when the length of the lower piston of the barrel hammer sliding out of the lower cylinder does not meet the specified value in the operation manual, the length of the connecting steel wire rope should be adjusted

13. Check whether the lubrication of the piston and rod hammer cylinder on the barrel hammer is normal

14. Check whether the bolts of each part are fastened and complete

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