Explanation on construction technology of static cutting of diamond rope saw

Explanation on construction technology of static cutting of diamond rope saw

Diamond rope saw cutting is a high-speed motion abrasive cutting body around the cutting surface driven by hydraulic motor to complete the cutting work. As diamond single crystal is used as abrasive material, hard objects such as stone and reinforced concrete can be cut. The cutting is carried out under the drive of hydraulic motor. The hydraulic pump runs smoothly and can be controlled remotely through the high-pressure oil pipe. Therefore, the cutting process is not only safe and convenient, but also has little vibration and noise. Diamond wires that run at high speed during the cutting process are cooled by water and carried away by grinding debris.

Second, the characteristics of

1. Can cut and dismantle large reinforced concrete structures without being restricted by the size and shape of the cutting object;

2. Cut in any direction, such as horizontal, vertical and diagonal, etc.;

3. Rapid cutting can shorten the construction period. Cutting efficiency: about 2m2/h;

4. Vibration, noise, dust and other environmental pollution problems during conventional demolition and construction are solved;

5. Remote operation control can realize cutting difficult for general equipment and technology under specific environment such as underwater and hazardous operating areas.

Process flow

Iv. Key points of construction

1. Determine the position of cutting section

According to the shape of the part to be cut and the conditions of the construction site, the cutting weight shall be determined to be divided into block sizes, and vertical cutting method or horizontal cutting method shall be adopted for the construction.

2. Drill hoisting holes and rope holes

Drill two Φ on each segmented block 108 hole for hoist, lifting hole location should be chosen in can guarantee block in the center of the relative balance when lifting.

3. Fixed rope saw and guide wheel

M16 chemical anchors are used to fix the main leg frame and auxiliary leg frame of the rope saw. The installation of the guide wheel must be stable, and the edge of the wheel must be aligned with the center line of the hole through to ensure the effective cutting speed of the cutting surface, and the installation accuracy should be strictly implemented.

4. Mounting rope

The diamond rope is wrapped around the driving wheel and the auxiliary wheel in a certain order according to the determined cutting form. The direction of the rope should be consistent with that of the driving wheel.

5. Relevant operation system connection and safety protection technical measures

According to the site situation, the connection of relevant pipelines such as water, electricity and mechanical equipment should be correctly regulated and relatively concentrated, and safety operation rules should be strictly implemented for laying the cables, in case that there are many machines, many people, auxiliary equipment, materials are placed in disorder, which may lead to potential accidents. In the process of rope cutting, the front of the direction of rope movement must be protected with safety protection, and a safety sign is set in a certain area to remind pedestrians not to enter the construction area.

6, cutting

Start the electric motor, adjust the tension of the driving wheel through the control panel, ensure that the diamond rope is properly tightened, supply the circulating cooling water, and then start another electric motor, drive the driving wheel to drive the diamond rope rotary cutting. The stability of the stand must be closely observed during cutting, and the deviation of the guide wheel must be adjusted at any time to ensure that the cutting rope is in the same plane.

7. Selection of cutting parameters

During the cutting process, the cutting parameters are adjusted through the operation control panel to ensure that the operation line speed of the diamond string is about 20m/s. On the other hand, sufficient amount of washing liquid should be ensured during the cutting process to ensure the cooling of the diamond string and remove the grinding powder. The cutting operation achieves stable speed, stable parameters and stable equipment.

8, lifting

diamond wire saw in the cutting process, according to the size and weight of cutting piece should be meet the lifting power through the hole for hoist wire rope was cut pieces firmly fixed on the floating hook, to force through steam hanging, hanging live was cut piece, when completely cut off by cutting, steam hang poised to capture was cut piece, and transferred to the specified location and broken.

9, broken

The cutting block is suspended at the designated location on site by truck crane and then broken by air compressor.

10. Problems to be paid attention to during cutting

(1) cutting direction of diamond rope saw

Each clip of the diamond saw is marked with a clear arrow or recognized by the bead of the diamond saw itself. The bead matrix is long tail and short front end, so the short front end is the cutting direction of the spring diamond rope saw. In use, it is necessary to distinguish the use direction of diamond rope saw correctly. Go in the direction of the arrow, do not cut in the opposite direction, avoid the beaded front and back ends to produce taper, ensure the normal use of diamond rope saw.

(2) connection of diamond rope saw

The diamond saw must be connected to a closed loop before use. The operation method and steps are as follows:

The length of exposed steel wire rope at the ends = the length of the joint.

The ball inserts two exposed wire ropes into the steel joint. The joint and the adjacent beads should be seamless.

Hydraulic clamp for diamond saw is adopted to fasten the joint. Burke, the first withhold puts central joint hydraulic pliers, every turn 90 ° withheld; Then place both ends of the joint in the hydraulic pliers to press the joint in turn; Finally, the middle of the joint is put into hydraulic pressure again.

Check the joint after pressing, and remove the flying edge and burr with Angle grinder.

In the case of the occurrence of the cable, rope breaking phenomenon to have corresponding measures to resolve. The safety Precautions must be strict and strict, otherwise the diamond beads on the broken diamond ropes will fly out like bullets. Therefore, the site in addition to do the necessary protective measures, all non - related personnel declined to visit.