Inspection Check whether the transmission system box has visible cracks and other damages, whether it is firmly fixed and whether there are abnormalities in operation.
1.
2.
Inspection of main stressed parts (standard section, hanging cage, guide rail frame, wall frame, etc.) Whether there are plastic deformation, serious corrosion and obvious cracks.
2.
inspection of metal structures and connectors.
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4.
Check the installation self inspection report and check the corresponding qualification certificates of the equipment on-site installers and drivers, and whether they have corresponding installation protection measures.
Therefore, it is widely used in the construction of various high-rise buildings such as buildings, large bridges and so on.
Specification for technical inspection of construction elevators construction elevators, also known as construction elevators, refer to temporarily installed lifting machinery with guided platforms, cages or other carrying devices that can stop at each floor of the construction site.
The ground insulation resistance of the control, lighting and signal circuits of the construction elevator shall not be less than 0.5m Ω, and the ground insulation resistance of the power circuit shall not be less than 1m Ω.
Zero position protection inspection.
3.
Check whether the installation unit has the installation qualification and license certificate of corresponding construction elevator specifications, whether it has the Filing Certificate, installation license certificate and notice sealed and confirmed by the equipment use supervision unit, and whether the equipment installation unit has the installation operation instructions and other technical documents and matters approved by its main person in charge Therefore, the emergency plan and other relevant data.
Relevant regulatory departments should strictly verify the data and carry out construction only after permission, so as to control from the source.
Check whether the control handle must be set to the zero position before the power supply is restored after voltage loss (automatic zero return is not used)..
Grounding protection inspection.
4.
Short circuit protection check.
2.
shall be reliably grounded.
1.
Check whether the safety passage and ground protective fence are well built, and whether the landing doors and floor signs of each landing meet the relevant requirements.
The transmission system shall be equipped with a reliable normally closed brake.
1.
Check the foundation installation of the construction elevator.
Check whether the cables and wires are mechanically damaged during the operation of the elevator, whether the cables can be dragged freely and unimpeded during the operation of the cage; whether the contactors running up and down the cage are electrically interlocked; whether the construction elevator is provided with manual switches insulated from each phase of the main circuit at places convenient for operation, and whether the switch handle is It can cut off the main circuit in one direction and can be locked at the disconnected position; the electrical equipment shall be able to prevent external interference and the influence of rain, snow, concrete, mortar and other substances; the purpose and action direction of the control element shall be marked at the operating position.
Check whether the information certificate of the installation unit is complete.
It has the characteristics of carrying people, large lifting height, large load capacity, safety and reliability, convenient operation, high efficiency and convenient installation and disassembly.
5、 Inspection of electrical control system 1.
3.
3.
Check whether the transmission system has oil leakage and oil dripping is not allowed (oil dripping is oil dripping within 15min) 5.
all pulleys and pulley blocks shall be provided with steel wires For wire rope anti falling off device, the gap between the device and the outer edge of the pulley shall not be greater than 20% and 3mm of the diameter of the wire rope; the pulley shall rotate well without damage and defects.
6.
Check whether the safe distance between the moving part of the construction elevator and the landing doors of each landing, surrounding buildings, facilities and transmission lines meets the requirements of relevant standards.
The installation shall be carried out according to the design drawing requirements on the installation, operation and maintenance manual of the equipment, and the installation unit shall provide the foundation installation acceptance certificate sealed and verified by it Materials mainly include: pile foundation trench inspection records, concealed works acceptance records and foundation concrete compressive strength test report (28 day test block results).
When the standard section of a construction elevator has different riser wall thickness, check whether the standard section is marked and whether the installation of the standard section is correct; when the maximum reduction of the riser wall thickness of the standard section is 25% of the factory thickness, the standard section shall be scrapped or degraded according to the riser wall thickness specification.
IV.
Check whether there are obvious welding defects in the connection welds of metal structures, focusing on the weld connections of important components such as standard section, transmission system, cage column and upper and lower bearing beams; check whether the bolt connections are loose, whether there are defects such as missing parts and damage, and high Whether the strength bolt has sufficient pre tightening torque; inspect the pin shaft connection, focusing on the wear of the stop plate at the end of the pin shaft and the installation and fixation of the pin shaft split pin.
4.
Check the working environment and appearance.
If the cage is equipped with a manual emergency lowering device, the brake of the driving system shall be opened manually, and the force required to maintain the brake opening shall not be greater than 400N; the force required to manually move the cage with rated load shall not be greater than 400N.
Voltage loss protection check.
When the power supply is interrupted, it shall be able to automatically disconnect the main power supply When the power supply is restored, the main power supply cannot be connected automatically without manual start operation.
If there are the above defects, the installation unit shall be required to replace them.
The end of the steel wire rope shall be fixed firmly, reliably and well lubricated; the steel wire rope shall not have the following defects: the diameter of the steel wire rope is reduced by more than 7%; the outer steel wire is worn up to 40% of the steel wire diameter; kink, flattening, bending, corrosion, cage distortion, strand breaking, core breaking, wavy shape, wire or strand extrusion, etc.
Note that when there is a space or passage that can be accessed under the construction elevator foundation, protection shall be set to prevent personnel from entering.
Check the appearance and structure of the equipment Whether the product nameplate hung by the equipment is consistent with the factory certificate and design documents of the equipment.
Check the steel wire rope and pulley.
Check whether there is a fuse or circuit breaker in the circuit.
1、 Verification of equipment technical data verification of equipment technical data is the primary and key link of safety technical inspection of construction elevator.
Insulation resistance check.
The manufacturer shall verify the product design documents of the construction elevator (including general drawing, drawing of main stressed structural parts, mechanical transmission drawing and schematic diagram of electrical and hydraulic system), product quality certificate, type test certificate, manufacturing supervision and inspection certificate, qualification certificate and type test certificate of main safety components, as well as installation, operation and maintenance instructions (including the contents of operation instructions for installation, use, daily maintenance and emergency rescue) 2.
When the height of the guide rail frame exceeds the maximum independent height, an attachment device shall be set to check whether the metal structure of the wall frame is intact and fixed reliably, and whether the spacing, attachment distance and installation method of the wall frame meet the requirements Instructions or design requirements; whether the installation perpendicularity deviation between the axis line of the guide rail frame and the horizontal datum plane of the base meets the design requirements (generally measured by theodolite) .
3.
Check whether the rack is firmly fixed, whether the tooth side clearance meets the requirements, whether the rack and gear mesh well, and whether the butt joint of two adjacent racks meets the requirements.
Check whether the safety warning signs are complete and whether the cargo construction elevator has obvious signs that do not allow people to carry.
Inspection of electrical equipment and electrical components.
5.
pay attention to check whether the height of the free end of the guide rail frame meets the design requirements.
If the operating conditions of on-site equipment fail to meet the corresponding installation requirements, the installation unit and personnel shall be required according to the actual situation of the site The equipment user shall take corresponding monitoring, use and protection measures.
5.
III.
3.
2.
transmission system inspection Inspection 1.
Check whether the type selection of the construction elevator conforms to the working environment and working conditions on the construction site according to the factory technical documents.
Check that the installation height of the construction elevator is greater than 120m, and Whether the red obstruction light is installed when the height of the building exceeds.
The pulley shall be free of obvious cracks, uneven wear of the wheel groove of 3mm, wear of the wall thickness of the wheel groove of 20%, wear of the diameter of the wheel groove of 50% of the diameter of the wire rope; the surface of the pulley shall be smooth and free of defects damaging the wire rope.
4.
Check whether the grounding form of the construction elevator is TN-S grounding system, and pay attention to the external metal on the metal structure and electrical equipment The shell, etc.
