Smooth and soft cable wiring installation
1 scope
Under the technology standard is suitable for use in 0.4 kV, general bridge, gantry crane, electric hoist sliding wiring and soft cable installation works.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 all kinds of steel, auxiliary bus should comply with the design requirements, and have the factory certificate.
2.1.2 soft cable, insulating porcelain must have the factory certificate. Specifications, model should be consistent with the design requirements.
2.1.3 all kinds of bolts, washers shall comply with the national standard of hot dip galvanized products.
2.1.4 other materials, such as electrode should be consistent with welding material. Anti-corrosion paint, logo should be paint factory certificate.
2.2 the main equipment:
2.2.1 main machines: workbench, vise, pipe pressure, hacksaw, toothless saw, hammer, straightening machine, electric hammer, desktop drill, bench grinding wheel, welding tools, welding machine, file, tightener, portable grinding wheel.
2.2.2 measuring equipment: level, spirit level, steel tape, steel ruler.
2.3 operation conditions:
2.3.1 construction drawings, product specification is complete, has been the arrival of the materials and accessories. The type, model satisfy the requirements of design and the product technical documents.
2.3.2 slide wiring installation need reserved hole, embedded iron position, size. Elevation comply with the provisions of the design and the product technical documents.
2.3.3 sliding connection, flexible cable installation parts of the building decoration engineering, ventilation engineering, warm who project about all over.
2.3.4 crane the orbits of all the end of the installation. Impede the construction of shelves all dismantled.
2.3.5 smooth and soft cable wiring installation of shelves, and erection shall comply with the provisions of the safety procedures.
2.3.6 materials and accessories should be stored and the processing of safety.
3 operation process
3.1 process:
Check the materials and accessories to slide connection measuring position, porcelain bolt installation and support of the fabrication and installation
Slide wire processing and installation to soft cable slide and soft cable installation, light to slide adapter installed, installation
The trial operation center
3.2 inspection: material and accessories
3.2.1 test materials and accessories construction team, in conjunction with the construction unit shall be organized by the builder according to the design drawings and crane verification and inspection of the technical document regulations.
3.2.2 inspection of materials and accessories shall include:
3.2.2.1 check the specifications of the materials and accessories, variety, quantity, should be fully conform to the requirement of design and technical documents the crane.
3.2.2.2 flexible cable and accessories with Great Wall logo certification. The specification should comply with the regulations of design.
3.2.2.3 insulation porcelain not bad damage and crack.
3.3 slide connection of measuring position:
3.3.1 the bottom point measuring slip. The distance from the ground plane shall not be less than 3.5 m, in the car shall not be less than 6 m channel.
3.3.2 rainfall distribution on 10-12 connection from other equipment, pipe distance of not less than 1.5 m. Smooth connection from flammable gas, liquid pipe distance should be not less than 3 m. With general pipe shall not be less than 1 m distance.
Measure the position of the bracket of each 3.3.3 (general devices on the crane beam hole or welding on mobile crane girder), each bracket installation level elevation, and coloring pencil accurate annotation.
We do support installation position should be as opposed to a building structure. Terminal support distance sliding connection terminal should not be greater than 800 mm. When the crane in the terminal position, sliding sliding connection terminal connector distance should not be less than 200 mm.
3.3.5 shall not be in the structure of the expansion joint and the orbit of the crane beam mounting bracket joint.
3.4 porcelain bolt installation:
3.4.1 track porcelain usually use 8000 (13600) type trolley buses insulation porcelain. Installed on the application of outdoor type insulation porcelain outdoors or damp places. Measuring insulation resistance before and after twisting note.
3.4.2 porcelain bolt twisting note:
3.4.2.1 bolt oil and porcelain rub-up. With more than 425 and cement, gypsum, asbestos, fine sand and water mixture packing.
3.4.2.2 with weight ratio of cement, fine = 1:1 stir well. Add 0.5% of gypsum, and adding water, stirring. It is advisable to by hand grasp to the cluster. Infill, fill and level up, room temperature curing three days after installation.
3.4.2.3 use asbestos dolly (weight ratio), cement, asbestos after a mix with cement, water and stir well, shoulds not be too much water, twist to the cluster with the hand, but not glue the hand. Filling and twist with the flat chisel, solid fill but shall not be higher than that of porcelain insulator surface, smooth water, after dry solid for installation.
Rule 3.4.3 porcelain insulator installation: installed before the application of 500 v shake table, wave measuring insulation resistance should comply with the requirements. Installation method as shown in figure 2-55.
3.5 support the fabrication and installation of:
3.5.1 track of stents processing:
3.5.1.1 should according to the selected model processing, the application of break saw, unfavorable use steam welding are cut. Cutting length error should not be greater than 5 mm.
3.5.1.2 steel bracket hole, application of electric drill or punch punch, cutting hole is unfavorable use steam, aperture should not be greater than the bolt diameter of 1.5 mm.
3.5.1.3 steel bracket welding should be on the tablet is milled, welding, weld formation and welding surface above the 1.5 ~ 3 mm. Without slag, porosity, welding net, standard chartered has no distortion after welding.
Should 3.5.1.4 is made from a steel frame, derusting and anticorrosive paint and paint, paint should be uniform, colour and lustre is smooth without omission.
Stents according to the provisions of the fabrication and installation in the design of no figure 2-56 processing and installation.
3.5.2 bracket installation:
3.5.2.1 steel bracket installation should be according to the measured location and model.
3.5.2.2 steel bracket is installed on the concrete beam and crane girder, according to the figure 2-56 installed firmly. Level error is not more than 1 mm. Horizontal total error is not more than 10 mm, vertical error is not more than 2/1000.
3.5.2.3 round steel sliding connection stents and soft cable slide bracket installation on the wall (FIG. 2-57).
3.6 slide wire processing and installation regulations such as design, can according to the following requirements:
3.6.1 track slip wire processing:
3.6.1.1 steel sliding connection before cutting application straightening straightening. Single span is not straight degree should not be greater than 2 mm. Can not have distortions.
3.6.1.2 Angle steel, channel steel should be broken, the broken ends end should level off is smooth.
3.6.1.3 steel sliding wiring connection application and connection plate of the same cross section lining in sliding inside, with three side welding welding. Welds shall be full, smooth, without a bit of meat, steam hole and slag. No variant after welding (FIG. 2-58).
3.6.1.4 round steel sliding connection should not be in the middle connector. If need, should be approved by design, and puts forward the quality requirements.
3.6.2 slide wiring installation:
3.6.2.1 slide connection in general installation according to the figure 2-55 (a). In the dust and the more the icy place according to the figure 2-55 (b) the installation. Installation should be strong.
3.6.2.2 wiring installation should be flat, smooth connection center line parallel to the center line of the mobile crane rail error is not more than 10 mm. Sliding contact surface should be polished, can not have depressions and burr. Suspension slide wire sag mutual deviation less than 20 mm.
3.6.2.3 slide wire length more than 50 m should add compensating device (figure 2 to 59), connection should be strong.
3.6.2.4 sliding connection through structure expansion joint, should add brackets on both sides in the expansion joints. Stent expansion joint is not more than 150 mm. In slide connection section deformation cracks, maintenance of 10 ~ 20 mm clearance shall be maintained.
3.6.2.5 guides along the slippery wiring installation in general. Should be not more than 12 m and slippery wiring connection at a time. Steel joint should be lining tin, connecting bolts according to the provisions of the busbar connection configuration, connection should be tight.
3.6.2.6 power cord and sliding connection even meet with figure 2-60, connection should be tight.
3.6.2.7 sliding connection in addition to the sliding contact surface, should first brush anti-corrosion paint, to brush brush evenly without leakage. After waiting for anti-corrosion paint dry. According to the following provisions brush paint again. Paint should be uniform, colour and lustre is smooth, color code is correct.
A arrange slippery wiring up and down, down from on a (yellow) and B (green), C (red).
B level of smooth connection, by A outside introversion (yellow) and b (green), C (red).
3.7 soft cable slide and soft cable installation; Shall, in accordance with the provisions of technical documents according to the design and the crane for installation. No rules when it can be installed in accordance with the following requirements:
3.7.1 flexible cable track installation:
3.7.1.1 slideway of specifications, material should be according to the movement of the crane
From the length and the specification and weight of the cable selected. But the round steel shall not be less than 4 mm diameter. Wire shall not be less than 6 mm in diameter.
3.7.1.2 slide bracket and fixed, tighten and adjust according to the processing and figure 2-61 configuration. Fixed firmly, sag. Adjust the bolt adjustable length is greater than 200 mm.
3.7.1.3 bracket on the crane rail welding is firm. Must not bite meat and orbital injury. Bolted, each holder should not be less than two bolts. Should have locking measures, fixed firmly.
3.7.2 flexible cable installation:
3.7.2.1 soft cable length of mobile, long distance than the movements of the crane should be 15% ~ 20%. Move the length is more than 20 m, should add traction rope, cable length index rope length shall not be greater than the mobile. The index rope appropriate USES nylon rope and soft wire rope.
3.7.2.2 flexible cable ends shall be respectively with clip and cranes and slide a solid and reliable card. Cable shall not be twisted, the sliding of the cable crane kaka fixed distance evenly, solid and firm, does not damage the cable.
3.7.2.3 cable drum should comply with the design requirements, fixed firmly. Schedule to accommodate the cable length and weight of the mound, cable and cable tension is consistent, the crane to the terminal position, cable due allowance.
3.8 the installation of the lights (FIG. 2-62) should be strong.
3.9 slide contactor shall be stipulated in the product, installation is firm, slide along the slide wiring is reliable. In any position of sliding contact center line should not go beyond the edge of the connection.
3.10 commissioning submit:
3.10.1 sliding connection and soft wire after the installation, check and clean, and with the shake table test, and the insulation resistance of the relatively Ω resistance value should be greater than 0.5 M. And record.
3.10.2 detection power no-load operation conform to requirements. Check no abnormal phenomenon, and then run with load, sliding contact device in operation and smooth sliding connection throughout, little spark and abnormal phenomena, the construction unit to use.
3.10.3 acceptance shall be submitted to the following information:
3.10.3.1 completion acceptance certificate, change regarding the records, product certification and technical documents.
3.10.3.2 record, testing and commissioning of the installation.
4 quality standards
4.1 ensure projects:
4.4.1 smooth and soft cable and wiring, the contrast between the insulation resistance must be greater than 0.5 M Ω.
Test method: with shaking table test, or check test records.
4.1.2 smooth connection of the centerline and crane rail of the center line of the actual distance and the same slide connection between different bracket horizontal or vertical distance must be consistent, the deviation value should not be more than 1/1000, the largest should not be greater than 10 mm.
Test method: the measured or check installation records.
4.1.3 sliding connection on the insulator fixed reliable, sliding connection joint smoothing, sliding contact surface are strictly forbidden to have rust, sliding connection with wire connection should be dealt with tin or zinc.
Inspection method: to observe the examination.
4.2 the basic items:
2 insulator without cracks and defects, clean and gasket between the bracket is complete. Bracket installation smooth, firm, uniform spacing, paint color evenly. Connecting bolt thread nut 2 ~ 3 buttons.
Inspection method: to observe the examination.
4.2.2 slide wiring installation shall meet the following requirements:
4.2.2.1 deformation cracks and overhaul period of leave 10 ~ 20 mm clearance. On both ends of the sliding terminal stud is smooth, high end difference is not greater than 1 mm.
4.2.2.2 free suspension type slide wire sag mutual deviation is not more than 20 mm.
4.2.2.3 brush paint, paint, color is correct and brush. Light indicator is normal.
4.2.2.4 sliding contact in whole trip slide smoothly and no spark.
Inspection method: to observe or check installation commissioning records.
Holdings of flexible cable installation shall meet the following requirements:
4.2.3.1 flexible cable slide, traction rope terminals fixed reliable, ramp control device is complete.
4.2.3.2 soft cable along the chute sliding flexible, smooth, not dozen twist, no jam phenomenon.
4.2.3.3 mobile cable length is longer than mobile crane length distance 15% ~ 20%, moving more than 20 m with traction rope length.
4.2.3.4 metal anti-corrosion uniform without omission.
Inspection method: to observe the inspection or check the commissioning records.
4.2.4 slide adapter installed flat and firm, sliding contact surface is smooth, contact is good. Sliding contact device center is not the slide in the sliding connection to the edge. The slider flexible no jam phenomenon. Complete insulation parts.
Inspection method: to observe and commissioning tests.
4.2.5 height below 3.5 m metal reliable grounding, grounding line of the cross section to choose correctly. Grounding wire without leakage.
Inspection method: to observe the examination.
5 finished product protection
5.1 sliding connection and soft cable after the installation, if there is any other type of work should be protected, prevent collision damage.
6 should pay attention to quality problems
6.1 smooth and soft cable wiring installation should pay attention to quality problems are shown in table 2-22.
7 should possess the quality of the record
7.1 product certification.
7.2 the steel material.
7.3 material equipment inspection records.
Often quality problems and control measures of the table 2-22
The quality problem of the serial number often produce for prevention measures
Inventory check carefully; Make a list to defect in the materials and accessories, with suppliers to talk things over solve. Strengthen custody
Appropriate attention when welding current adjustment. Using symmetric discontinuous welding seam, check and adjustment after welding
3 earth leakage protection or do not conform to the rules to seriously implement the system of self-inspection, mutual inspection, ZhuanJian three
7.4 preview records.
7.5 since, mutual inspection records.
7.6 insulation shake test record.
7.7 kinds of construction quality assessment record.
7.8 design changes regarding the record.
1 scope
Under the technology standard is suitable for use in 0.4 kV, general bridge, gantry crane, electric hoist sliding wiring and soft cable installation works.
2 construction preparation
2.1 equipment and materials requirements:
2.1.1 all kinds of steel, auxiliary bus should comply with the design requirements, and have the factory certificate.
2.1.2 soft cable, insulating porcelain must have the factory certificate. Specifications, model should be consistent with the design requirements.
2.1.3 all kinds of bolts, washers shall comply with the national standard of hot dip galvanized products.
2.1.4 other materials, such as electrode should be consistent with welding material. Anti-corrosion paint, logo should be paint factory certificate.
2.2 the main equipment:
2.2.1 main machines: workbench, vise, pipe pressure, hacksaw, toothless saw, hammer, straightening machine, electric hammer, desktop drill, bench grinding wheel, welding tools, welding machine, file, tightener, portable grinding wheel.
2.2.2 measuring equipment: level, spirit level, steel tape, steel ruler.
2.3 operation conditions:
2.3.1 construction drawings, product specification is complete, has been the arrival of the materials and accessories. The type, model satisfy the requirements of design and the product technical documents.
2.3.2 slide wiring installation need reserved hole, embedded iron position, size. Elevation comply with the provisions of the design and the product technical documents.
2.3.3 sliding connection, flexible cable installation parts of the building decoration engineering, ventilation engineering, warm who project about all over.
2.3.4 crane the orbits of all the end of the installation. Impede the construction of shelves all dismantled.
2.3.5 smooth and soft cable wiring installation of shelves, and erection shall comply with the provisions of the safety procedures.
2.3.6 materials and accessories should be stored and the processing of safety.
3 operation process
3.1 process:
Check the materials and accessories to slide connection measuring position, porcelain bolt installation and support of the fabrication and installation
Slide wire processing and installation to soft cable slide and soft cable installation, light to slide adapter installed, installation
The trial operation center
3.2 inspection: material and accessories
3.2.1 test materials and accessories construction team, in conjunction with the construction unit shall be organized by the builder according to the design drawings and crane verification and inspection of the technical document regulations.
3.2.2 inspection of materials and accessories shall include:
3.2.2.1 check the specifications of the materials and accessories, variety, quantity, should be fully conform to the requirement of design and technical documents the crane.
3.2.2.2 flexible cable and accessories with Great Wall logo certification. The specification should comply with the regulations of design.
3.2.2.3 insulation porcelain not bad damage and crack.
3.3 slide connection of measuring position:
3.3.1 the bottom point measuring slip. The distance from the ground plane shall not be less than 3.5 m, in the car shall not be less than 6 m channel.
3.3.2 rainfall distribution on 10-12 connection from other equipment, pipe distance of not less than 1.5 m. Smooth connection from flammable gas, liquid pipe distance should be not less than 3 m. With general pipe shall not be less than 1 m distance.
Measure the position of the bracket of each 3.3.3 (general devices on the crane beam hole or welding on mobile crane girder), each bracket installation level elevation, and coloring pencil accurate annotation.
We do support installation position should be as opposed to a building structure. Terminal support distance sliding connection terminal should not be greater than 800 mm. When the crane in the terminal position, sliding sliding connection terminal connector distance should not be less than 200 mm.
3.3.5 shall not be in the structure of the expansion joint and the orbit of the crane beam mounting bracket joint.
3.4 porcelain bolt installation:
3.4.1 track porcelain usually use 8000 (13600) type trolley buses insulation porcelain. Installed on the application of outdoor type insulation porcelain outdoors or damp places. Measuring insulation resistance before and after twisting note.
3.4.2 porcelain bolt twisting note:
3.4.2.1 bolt oil and porcelain rub-up. With more than 425 and cement, gypsum, asbestos, fine sand and water mixture packing.
3.4.2.2 with weight ratio of cement, fine = 1:1 stir well. Add 0.5% of gypsum, and adding water, stirring. It is advisable to by hand grasp to the cluster. Infill, fill and level up, room temperature curing three days after installation.
3.4.2.3 use asbestos dolly (weight ratio), cement, asbestos after a mix with cement, water and stir well, shoulds not be too much water, twist to the cluster with the hand, but not glue the hand. Filling and twist with the flat chisel, solid fill but shall not be higher than that of porcelain insulator surface, smooth water, after dry solid for installation.
Rule 3.4.3 porcelain insulator installation: installed before the application of 500 v shake table, wave measuring insulation resistance should comply with the requirements. Installation method as shown in figure 2-55.
3.5 support the fabrication and installation of:
3.5.1 track of stents processing:
3.5.1.1 should according to the selected model processing, the application of break saw, unfavorable use steam welding are cut. Cutting length error should not be greater than 5 mm.
3.5.1.2 steel bracket hole, application of electric drill or punch punch, cutting hole is unfavorable use steam, aperture should not be greater than the bolt diameter of 1.5 mm.
3.5.1.3 steel bracket welding should be on the tablet is milled, welding, weld formation and welding surface above the 1.5 ~ 3 mm. Without slag, porosity, welding net, standard chartered has no distortion after welding.
Should 3.5.1.4 is made from a steel frame, derusting and anticorrosive paint and paint, paint should be uniform, colour and lustre is smooth without omission.
Stents according to the provisions of the fabrication and installation in the design of no figure 2-56 processing and installation.
3.5.2 bracket installation:
3.5.2.1 steel bracket installation should be according to the measured location and model.
3.5.2.2 steel bracket is installed on the concrete beam and crane girder, according to the figure 2-56 installed firmly. Level error is not more than 1 mm. Horizontal total error is not more than 10 mm, vertical error is not more than 2/1000.
3.5.2.3 round steel sliding connection stents and soft cable slide bracket installation on the wall (FIG. 2-57).
3.6 slide wire processing and installation regulations such as design, can according to the following requirements:
3.6.1 track slip wire processing:
3.6.1.1 steel sliding connection before cutting application straightening straightening. Single span is not straight degree should not be greater than 2 mm. Can not have distortions.
3.6.1.2 Angle steel, channel steel should be broken, the broken ends end should level off is smooth.
3.6.1.3 steel sliding wiring connection application and connection plate of the same cross section lining in sliding inside, with three side welding welding. Welds shall be full, smooth, without a bit of meat, steam hole and slag. No variant after welding (FIG. 2-58).
3.6.1.4 round steel sliding connection should not be in the middle connector. If need, should be approved by design, and puts forward the quality requirements.
3.6.2 slide wiring installation:
3.6.2.1 slide connection in general installation according to the figure 2-55 (a). In the dust and the more the icy place according to the figure 2-55 (b) the installation. Installation should be strong.
3.6.2.2 wiring installation should be flat, smooth connection center line parallel to the center line of the mobile crane rail error is not more than 10 mm. Sliding contact surface should be polished, can not have depressions and burr. Suspension slide wire sag mutual deviation less than 20 mm.
3.6.2.3 slide wire length more than 50 m should add compensating device (figure 2 to 59), connection should be strong.
3.6.2.4 sliding connection through structure expansion joint, should add brackets on both sides in the expansion joints. Stent expansion joint is not more than 150 mm. In slide connection section deformation cracks, maintenance of 10 ~ 20 mm clearance shall be maintained.
3.6.2.5 guides along the slippery wiring installation in general. Should be not more than 12 m and slippery wiring connection at a time. Steel joint should be lining tin, connecting bolts according to the provisions of the busbar connection configuration, connection should be tight.
3.6.2.6 power cord and sliding connection even meet with figure 2-60, connection should be tight.
3.6.2.7 sliding connection in addition to the sliding contact surface, should first brush anti-corrosion paint, to brush brush evenly without leakage. After waiting for anti-corrosion paint dry. According to the following provisions brush paint again. Paint should be uniform, colour and lustre is smooth, color code is correct.
A arrange slippery wiring up and down, down from on a (yellow) and B (green), C (red).
B level of smooth connection, by A outside introversion (yellow) and b (green), C (red).
3.7 soft cable slide and soft cable installation; Shall, in accordance with the provisions of technical documents according to the design and the crane for installation. No rules when it can be installed in accordance with the following requirements:
3.7.1 flexible cable track installation:
3.7.1.1 slideway of specifications, material should be according to the movement of the crane
From the length and the specification and weight of the cable selected. But the round steel shall not be less than 4 mm diameter. Wire shall not be less than 6 mm in diameter.
3.7.1.2 slide bracket and fixed, tighten and adjust according to the processing and figure 2-61 configuration. Fixed firmly, sag. Adjust the bolt adjustable length is greater than 200 mm.
3.7.1.3 bracket on the crane rail welding is firm. Must not bite meat and orbital injury. Bolted, each holder should not be less than two bolts. Should have locking measures, fixed firmly.
3.7.2 flexible cable installation:
3.7.2.1 soft cable length of mobile, long distance than the movements of the crane should be 15% ~ 20%. Move the length is more than 20 m, should add traction rope, cable length index rope length shall not be greater than the mobile. The index rope appropriate USES nylon rope and soft wire rope.
3.7.2.2 flexible cable ends shall be respectively with clip and cranes and slide a solid and reliable card. Cable shall not be twisted, the sliding of the cable crane kaka fixed distance evenly, solid and firm, does not damage the cable.
3.7.2.3 cable drum should comply with the design requirements, fixed firmly. Schedule to accommodate the cable length and weight of the mound, cable and cable tension is consistent, the crane to the terminal position, cable due allowance.
3.8 the installation of the lights (FIG. 2-62) should be strong.
3.9 slide contactor shall be stipulated in the product, installation is firm, slide along the slide wiring is reliable. In any position of sliding contact center line should not go beyond the edge of the connection.
3.10 commissioning submit:
3.10.1 sliding connection and soft wire after the installation, check and clean, and with the shake table test, and the insulation resistance of the relatively Ω resistance value should be greater than 0.5 M. And record.
3.10.2 detection power no-load operation conform to requirements. Check no abnormal phenomenon, and then run with load, sliding contact device in operation and smooth sliding connection throughout, little spark and abnormal phenomena, the construction unit to use.
3.10.3 acceptance shall be submitted to the following information:
3.10.3.1 completion acceptance certificate, change regarding the records, product certification and technical documents.
3.10.3.2 record, testing and commissioning of the installation.
4 quality standards
4.1 ensure projects:
4.4.1 smooth and soft cable and wiring, the contrast between the insulation resistance must be greater than 0.5 M Ω.
Test method: with shaking table test, or check test records.
4.1.2 smooth connection of the centerline and crane rail of the center line of the actual distance and the same slide connection between different bracket horizontal or vertical distance must be consistent, the deviation value should not be more than 1/1000, the largest should not be greater than 10 mm.
Test method: the measured or check installation records.
4.1.3 sliding connection on the insulator fixed reliable, sliding connection joint smoothing, sliding contact surface are strictly forbidden to have rust, sliding connection with wire connection should be dealt with tin or zinc.
Inspection method: to observe the examination.
4.2 the basic items:
2 insulator without cracks and defects, clean and gasket between the bracket is complete. Bracket installation smooth, firm, uniform spacing, paint color evenly. Connecting bolt thread nut 2 ~ 3 buttons.
Inspection method: to observe the examination.
4.2.2 slide wiring installation shall meet the following requirements:
4.2.2.1 deformation cracks and overhaul period of leave 10 ~ 20 mm clearance. On both ends of the sliding terminal stud is smooth, high end difference is not greater than 1 mm.
4.2.2.2 free suspension type slide wire sag mutual deviation is not more than 20 mm.
4.2.2.3 brush paint, paint, color is correct and brush. Light indicator is normal.
4.2.2.4 sliding contact in whole trip slide smoothly and no spark.
Inspection method: to observe or check installation commissioning records.
Holdings of flexible cable installation shall meet the following requirements:
4.2.3.1 flexible cable slide, traction rope terminals fixed reliable, ramp control device is complete.
4.2.3.2 soft cable along the chute sliding flexible, smooth, not dozen twist, no jam phenomenon.
4.2.3.3 mobile cable length is longer than mobile crane length distance 15% ~ 20%, moving more than 20 m with traction rope length.
4.2.3.4 metal anti-corrosion uniform without omission.
Inspection method: to observe the inspection or check the commissioning records.
4.2.4 slide adapter installed flat and firm, sliding contact surface is smooth, contact is good. Sliding contact device center is not the slide in the sliding connection to the edge. The slider flexible no jam phenomenon. Complete insulation parts.
Inspection method: to observe and commissioning tests.
4.2.5 height below 3.5 m metal reliable grounding, grounding line of the cross section to choose correctly. Grounding wire without leakage.
Inspection method: to observe the examination.
5 finished product protection
5.1 sliding connection and soft cable after the installation, if there is any other type of work should be protected, prevent collision damage.
6 should pay attention to quality problems
6.1 smooth and soft cable wiring installation should pay attention to quality problems are shown in table 2-22.
7 should possess the quality of the record
7.1 product certification.
7.2 the steel material.
7.3 material equipment inspection records.
Often quality problems and control measures of the table 2-22
The quality problem of the serial number often produce for prevention measures
Inventory check carefully; Make a list to defect in the materials and accessories, with suppliers to talk things over solve. Strengthen custody
Appropriate attention when welding current adjustment. Using symmetric discontinuous welding seam, check and adjustment after welding
3 earth leakage protection or do not conform to the rules to seriously implement the system of self-inspection, mutual inspection, ZhuanJian three
7.4 preview records.
7.5 since, mutual inspection records.
7.6 insulation shake test record.
7.7 kinds of construction quality assessment record.
7.8 design changes regarding the record.
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