A, the preparation of the basis of "Fujian Province, building construction safety management information regulations" "building construction safety inspection standards" (JCJ59-99) "Safety Technical Regulations for the Use of Construction Machinery" (JGJ33-2001) "Tower Crane Safety Regulations" (GB5144-1994) "tower crane technical conditions" (GB/T9462-1999) "tower crane performance test" (GB/T5013-1994) "tower crane with wire rope test and scrapping practical provisions" (GB/T5972-1986) Tower Crane Performance Test" (GB/T5013-1994) "practical provisions for testing and scrapping of steel wire rope for lifting machinery" (GB/T5972-1986) "Safety Regulations for Lifting Equipment" (GB6067-1985) "TC5612 Tower Crane Installation and Use Instructions" engineering construction drawings engineering construction organization design on-site construction site II, the project overview Engineering Name: Xingbei staff integrated services in, project location: Xinglin Xingbei two roads, building height: 85 meters, structural form: frame shear structure, construction period: 602 days. Construction unit: Xiamen Xinglin Construction Development Company, contractor: Fujian Construction Group Corporation, tower installation and removal unit: Xiamen Zheng Deli Industrial Development Co. Installation of a tower crane, model: TC5612, the maximum working range of the tower crane: 56m, rated lifting moment 800kN.m, the maximum lifting capacity of 6 tons, the maximum lifting capacity of the end of the tower crane is 1.2 tons, the permissible free height of the tower crane is 31 meters. The tower crane is intended to be installed at a height of 95 meters, the first installation height of 30 meters, the proposed number of attached parts for 5. Third, the site operating conditions The tower crane is planned to be installed in 3-4 axes intersecting E-F axes, 16 meters and 11 meters away from the outer edge line of the basement on the west and south sides respectively, and about 3.5 meters away from the upper body. It is about 22 meters away from the site fence, and there is a high-voltage line 10 meters outside the fence, which is about 27 meters high. Fourth, the composition of the installation operation personnel 4.1 personnel composition Post name certificate 4.2 job responsibilities: 4.2.1 tower crane installation and dismantling class: shift manager job responsibilities: 4.2.1.1 according to the needs of construction and production, the organization of the shift is responsible for the entry and exit of machinery and equipment, installation and dismantling, debugging and transfer of the site work, do a good job of the performance of machinery and equipment and the safety of the workplace briefings, to ensure that the human-machine safety.4.2.1.2 guide the The team to use the correct use of machinery and equipment, comply with the operating procedures and safety production system, to ensure the quality of operation, to complete the dismantling and maintenance tasks and various economic and technical indicators.4.2.1.3 Ensure the integrity of the equipment, the main engine, auxiliary engines, ancillary devices and random tools of the safety.4.2.1.4 Supervision of the team personnel in accordance with the specification requirements,*** with the maintenance of the equipment to improve the repair and maintenance, strengthen the daily checking work, pay attention to the Signs of equipment failure, timely inspection and maintenance, eliminate hidden dangers, to avoid accidents.4.2.1.5 Carefully and accurately fill in the equipment installation, commissioning and equipment inspection records, and timely reporting and filing.4.2.1.6 Protect the scene when an accident occurs, and participate in the analysis of accidents.4.2.1.7 Organize political and technical study of the shift personnel, and improve the quality of the shift personnel.4.2.1.8 Participate in the maintenance of equipment and identification and acceptance after repair.4.2.2 Job duties of the dismantling personnel4.2.2.1 Entering the work site, must wear and use labor protection equipment that meets the requirements according to the regulations.4.2.2.2 Before the operation, the tools, spreaders and locks used must be carefully inspected in accordance with the regulations and used according to the requirements.4.2.2.3 Must be under the command of the special person strictly according to the Requirements tower crane specified installation and dismantling procedures, the operation is strictly prohibited changes in the provisions of the dismantling and installation procedures. 4.2.2.4 In the operation, must be clear about their own projects, where the part, the content of the workplace and the requirements of the connecting parts in accordance with the requirements of the provisions of the good protection and packaging work. 4.2.2.5 The process of the operation of the equipment, tools are strictly in accordance with the requirements of the provisions of the requirements of the use of the work. 4.2.2.6 Strictly abide by the safety operation regulations, obey the command. 4.2.3 tower crane commanders job responsibilities 4.2.3.1 must be familiar with the performance of the crane operated and the provisions of the various command signals to contact with the driver, supervise and check the scope of the jurisdiction of the operating personnel wearing labor protective equipment. 4.2.3.2 crane operation, must be with the driver to agree with the driver to use the type of command signals, and in the 4.2.3.2 Before the crane operation, the driver must be contacted by the crane operator and the signals used must be changed in the middle of the operation. 4.2.3.3 The wire ropes and hooks must be inspected according to the relevant regulations and the unqualified ones are forbidden to be used. 4.2.3.4 The safety operation regulations must be strictly followed according to the contents, requirements and performance of the tower crane. 4.2.3.5 The crane operator is required to follow the safety operation regulations strictly. 4.2.3.6 The crane operator is required to follow the safety operation regulations according to the contents, requirements and performance of the tower crane. 4.2.3.5 When directing the operation, the operator must wear a distinctive sign that complies with the specifications: he/she must use the standardized command signals, and give out the command signals clearly and distinctly; he/she must stand in a safe and clear place within the driver's hearing or sight. Follow the load running command, should always command the driver will load avoid people and obstacles. 4.2.3.6 in the command operation, must concentrate, not to do other work affecting the command. When lifting, the first "micro" signal command, to be loaded off the ground 200mm stable, and then normal speed command, before the load landing, confirm the landing area is safe, before the landing signal can be issued, if necessary, with the "micro" signal command landing. 4.2. 3.7 can not see the driver and load at the same time, must be added to the intermediate command to pass the signal. 4.2.4 electrician duties 4.2.4.1 installation, according to the tower machine electrical control system diagram to check the approved primary and secondary circuit control system, signaling system, working lighting system, alarm system working condition is intact and reliable, operating system is flexible and accurate; adjust the lifting height, amplitude and other limit devices and lifting torque, overweight, and other limit devices. Device and lifting torque, overweight limiter and other safety protection devices to meet the requirements of the lifting instructions. 4.2.4.2 Check the wire connectors, the components of the fixing of whether it is firm, whether the contact is good, whether the conductor is exposed and other phenomena. 4.2.4.3 Check the power supply into the line according to the requirements of the laying of special power supply lines, the cross-sectional area of the conductor is according to the requirements of the tower product manual selection. 4.2.4.4 Before energizing the tower crane, check that the controllers should be in zero position, and check that the working power voltage supplied should be in the range of 380V+10%.4.2.4.5 Make the grounding, zero-connecting protection and lightning protection of the tower crane in accordance with the regulations, and check that the resistance of its grounding should be less than four ohms.4.2.4.6 When the motors are in operation, pay attention to checking the temperature rise, load situation, and whether the variable-speed control system is normal. 4.2.4.7 Make records of installation and commissioning and overhauling of the electrical and pneumatic control system of the tower machine. Fifth, the preparation of equipment 1, 25 tons of crane a 2, latitude and longitude two 3, live board hand 12 "2, 18" 4 4, a multimeter 5, megohmmeter a 6, ground shaking table a 7, a set of screwdrivers, 8, a variety of rigging supporting 9, helmet per person a safety belt, gloves, 30 pays, toolkit 2 10, hand-pulling Windlass 2 tons 2 only 11, big, small hammer: olive punch supporting 12, brown rope 30M / root: 2 six tower demolition tower demolition is a very technical work, especially the tower of the standard section, balance weight, balance arm, boom and other parts of the demolition, a little negligence, will lead to serious accidents, so in the demolition of these parts need to be strictly in accordance with the provisions of the instruction manual and the procedural requirements of the operation. The operator on the tower must be a trained and licensed person.6.1 Precautions for dismantling 6.1.1 Before dismantling the tower crane, the jacking mechanism should be maintained and test run because it is not in use for a long time.6.1.2 In the process of test run, there should be a purpose to carry out a reliable inspection of the brake of the slewing mechanism.6.1.3 Before the tower's standard section has been dismantled, and the casing and the tower body have not yet been connected to form a whole, it is strictly prohibited to carry out slewing movement.6.1.4 The tower crane should be operated in accordance with the provisions of the instruction manual. 6.1.4 tower demolition and installation work procedures are just the opposite, demolition of the wind should be less than four, due to demolition of the tower, the building has been completed, the work site is not as spacious as when the installation, in the demolition of the tower should pay special attention to the work procedures and lifting and stacking position. Each various must not be sloppy and careless, otherwise arbitrary personal safety accidents. 6.1.5 cylinder movement process should pay attention to the guide wheel and the tower body of the main玄rod clearance should be maintained at 2-3mm, and must be observed throughout the process of the guide wheel unobstructed. 6.2 dismantle the tower sequence and content 6.2.1 landing 6.2.1.1 according to the instructions for the relevant requirements of the adjustment of the hydraulic lifting system, and need to pay special attention to the 6.2.1.2 Step 1 Turn back the lifting arm to the introduction direction of the standard section (i.e., the side with the introduction platform in the jacking set) so that the slewing brake is in the braking state, and adjust the balanced position that the trolley is in when jacking up according to the requirements of the instruction manual. Remove the high-strength bolts connecting the lower support with the standard section to be dismantled. 6.2.1.3 Step 2 (1) Make sure that the jacking cylinder extends to about 90% of its full length, and that the jacking crossbeam is placed on the upper step of the standard section 1 (the standard section under the standard section to be dismantled) (Note: Never allow the jacking crossbeam to be placed on the step of the standard section to be dismantled.) At this time, the jacking cylinder should be unsuppressed (i.e., the pressure gauge of the hydraulic system is read as zero). The pins at both ends of the jacking beam are placed in the arc groove (both pins must be entered, otherwise the lower work will be a side-tower accident) and the two ends of the pin outer face in the step of the outer side of the amount of exposure is basically equal. (2) Remove the high-strength bolts connecting the standard section to be dismantled and standard section 1. And insert the pins of the four introduction rollers into the bolt holes of the connection sleeve at the lower part of the standard section to be dismantled, and rotate the introduction rollers so that the axes of the rollers are perpendicular to the introduction beam. (3) Turn on the hydraulic system, lift out the cylinder, and raise the jacking sleeve to the point where the lower end of the standard section to be dismantled has a clearance of 10-20mm from the upper camber of the standard section 1 to stop jacking at any time.6.2.1.4 Step 3 (1) Push out the standard section to be dismantled onto the introduction platform (2) Retract the cylinder so that the sleeve can be lowered. When starting to descend, it is necessary for a person to watch over the two crawlers on the set frame to ensure that during the descent of the set frame, they can smoothly dodge the two treads on the main bascule pole of the tower (Note: It is absolutely forbidden that one crawler dodges and the other one dodges. Otherwise there will be a side tower accident! After the crawling claw dodges the treads, make sure they are in a horizontal state).6.2.1.5 Step four (1) Continue to descend the set of frames about half of the height of the standard section until the crawling claw and the treads of the standard section 2 (standard section above the standard section to be dismantled) will be in contact with the stop of the descent to check the right and left two crawling claws with the standard section of the two treads between the position is correct (Note: the two crawling claws must be in a horizontal state, otherwise) One horizontal, one tilted, to carry out the following work will be the side tower accident!) After confirming the correctness of the set of frame down, while carefully observe the left and right two climbing claws and the step of the fit situation. Stop descending after the climbing claw is loaded, observe the climbing claw, tread and loaded components for any abnormalities such as abnormal noise, deformation, etc., and confirm that it is normal before proceeding to the next operation, otherwise the jacking beam pin should continue to be placed in the circular arc groove of the tread.6.2.1.6 Step 5 (1) Continue to retract the cylinder, and stop retracting after the jacking beam pin has been withdrawn from the upper tread of the standard section 1. Then slowly extend the cylinder to about 90% of the full length, the jacking beam descends and puts both ends of the pin in the circular arc groove of the lower tread of standard section 2 until (Note: both ends of the pin must be put in otherwise further work will result in a side tower accident!) (Note that both pins must be put in or there will be a side tower accident if work is continued! At this time should check the jacking beam two ends of the pin and the step of the fit and relative position, confirm the correct before continuing to work. (2) Slightly jacking up, stop when jacking crossbeam is under force, check jacking crossbeam, step and force parts after force, there is no abnormal noise and deformation, after confirming normal, continue to jacking up to the two crawling claws can rotate to avoid the original contact step after stopping jacking up, then rotate the two crawling claws to avoid the step (Note: the two crawling claws must be avoided, or else there will be a side-tower accident when working in the lower part of the tower!) . (3) Continue to lower the set frame, when the top surface of standard section 2 is in contact with the lower support, pull out the jacking crossbeam, and connect the upper end of standard section 2 with the lower support with high-strength bolts.6.2.1.7 Step 6 (1) Turn on the trolley, use the hook to lift the standard section to be dismantled slightly from the introduction platform, and take off the four lead wheels and put them on the introduction platform. (2) Start the trolley and use the hook to lift and lower the standard section to be dismantled to the ground, thus completing the dismantling of one standard section.6.2.1.8 To continue dismantling the standard section, repeat all the actions of the above six steps. When the tower crane is lowered to the installation height (or is able to appropriate lifting equipment such as car cranes to remove the height), use the car crane to gradually dismantle all parts of the tower crane.6.2.2.1 Retrieve the lifting steel wire rope with the lifting mechanism and drive the trolley to the root of the boom to fix it.6.2.2.2 Remove part of the balancing weight.6.2.2.3 Using the lifting mechanism, dismantle the pins connecting the boom tie rods with the top of the tower and fix the tie rods on the boom on the upper basement rod (Note: the end of the boom needs to be slightly upturned with the car crane during the operation), and then put the boom assembly on the ground smoothly.6.2.2.4 Remove the remaining balancing weight of the balancing arm.6.2.2.5 Use the car crane to lift the balancing arm slightly upturned, remove the balancing arm tie rods and fix the tie rods to the balancing arm, remove the pins at the root of the balancing arm, and then put the balancing arm on the ground smoothly.6.2.2.5 Remove the balancing arm tie rods by using the car crane and fix the tie rods to the balancing arm. 6.2.2.6 For the disassembly of the rest of the parts, please refer to the instructions of the installation procedure, and carry out the work according to the principle of installing before disassembling and disassembling after installing, if there is no great certainty, please refer to the installation procedure to carry out the disassembly work. 6.3 Precautions after disassembly 6.3.1 After the disassembly of the tower crane is completed, the relevant engineers and technicians and professional maintenance personnel shall carry out the counting and checking, and check the welds, structural deformation and fatigue damage of the main stressing structure. Deformation and fatigue damage, etc., and check whether the tower parts are damaged or bruised, etc. 6.3.2 After overhauling, repair defects, hidden dangers, etc., and carry out rust removal and painting. VII. Disassembly of electrical equipment 7.1 Electrical disassembly 7.1.1 When disassembling the electrical equipment, the electrical system should be kept in the case of power failure. 7.1.2 After disassembling, the cable should be marked according to the line number to facilitate the next disassembly. Eight, safety and technical measures 8.1 check the tower crane demolition of the various tools used, found that the problem is dealt with in a timely manner. 8.2 tower crane demolition must be qualified by the installation unit for demolition, demolition unit personnel must be through the relevant departments of the state for special safety training, and obtain special operation qualification certificates can be carried out only after the on-the-job operation. 8.3 installers to accept the three levels of safety education, and strictly comply with the safety operation regulations. Work in strict compliance with safety regulations, should wear helmets, rubber shoes, climbing wear safety belts, is strictly prohibited to operate under the influence of alcohol, is prohibited from throwing objects down from a height.
8.4 tower crane in the dismantling must be based on the environment and conditions of the construction site, the tower crane mechanical properties and auxiliary lifting equipment characteristics, the preparation of dismantling program and targeted safety and technical measures.
8.5 dismantling operations before, must carry out targeted safety and technical signatures, in accordance with the operating procedures, division of labor, unified command; installation operations in the various processes should be fixed, fixed, fixed, dedicated unified command. Dismantling operations should be set up cordon area, and set up a person to monitor.
8.6 in the tower crane is not dismantled to allow cantilever height, is strictly prohibited to dismantle the attached wall rod.
Tower crane dismantling program