With the development of economic construction, more and more high-rise buildings, installation and commissioning work as a high-rise building is extremely important in mechanical and electrical equipment, elevators will directly affect the use of the safety and quality of building services. Thus, all the items in the elevator installation, the system checks to strict and adjustment, and test run test.
Check the adjustment of an elevator
Under normal circumstances, the elevator equipment after installation, carry out the necessary checks should be adjusted according to the following procedure:
(1) examine and adjust the vertical and horizontal direction of the traction machine level, so that the error does not exceed 1 ‰; then corrected position deviation traction machine, adjust the traction sheave and the imbalance of the guide wheel; hoisting machine should be checked after bearing, the governor and other bits rotational friction and lubrication of sliding friction surface between the rail and guide shoe, should ensure good lubrication in working condition.
(2) Check the clearance between the brake shoe and brake wheel can be adjusted using electricity simulation. After the electromagnetic coil is energized to be able to make a reliable sub-gate, but also to achieve reliable holding brake after a power failure.
(3) carefully check the traction sheave rope rope combination pouring babbitt, adjusting nut combination of rope, wire rope so that each force uniform, and plug pin. In addition, the need for traction sheave and rope oil for cleaning.
(4) a comprehensive inspection of the limit switch and the upper and lower limit switch the drive to fight off the shelf touch wheel, requiring smooth vertical and horizontal traction rope, but the rope guide rollers not more than two. Upper and lower limit switches off the drive cage to play touch wheel traction sheave should be firmly secured to each wheel groove sheave alignment with each other, so that in the same line, and pulling the rope should be breaking the limit switch along the direction On the brake wheel around two laps more complex, but not overlapping, and should be flexible rotation. After installing the limit switch device, you should test 5 times in a row, should be flexible and reliable, install qualified. Check the control panel power line phase sequence meets the design requirements, namely motor rotation is consistent with the engineering requirements. Megger measuring motor, drag lines, control lines and signal lines show the insulation resistance meets the regulatory requirements related to the project. Check the ground fault protection, the metal casing of all equipment, metal structures, metal conduit, trunking base steel, etc. should be grounded.
(5) Further examination is consistent with the distribution piping design requirements, whether the individual terminals crimp reliable, serious line supply voltage is detected, the polarity of the DC circuit proof, measuring AC and DC control circuits, signal display circuit voltage compliance Claim.
(6) Check the side guide rails with their boots fit the situation, according to the instructions of the installation requirements for the product gap correction; the governor and security clearance check and clamp wedge between the side rail, checking safety gear lever and the transmission mechanism Flexible and reliable. In the top of the car can pull the safety gear steel hove hand simulation verification tests. General requirements to run down when the elevator car speed 1.15 times the rated speed, the governor should be action. Namely: breaking safety gear switch, cut off the main drag through the control circuit power line hoisting machine stops, at the same time, the governor pulling safety gear, safety gear through the car retaining wedge block on the rail. Due to the governor at the factory according to the rated speed of the elevator rigorous inspection and adjustment, therefore, may not be adjusted during installation.
(7) Check the adjustment layers station hoistway upward, downward change reed sensor on the car and on the quick-drying, leveling mounting position under the reed sensor and the respective magnetic isolation plate. Separated from the magnetic plate and the ground clearance sensor cartridge recess is 5 ~ 8 mm, and the recess on the side of the gap sensor should also meet the requirements of random technical documents.
(8) Check and adjust the car door, the verticality of the hall door to make it open and close freely, no significant crash, in the role of 3 N force should be able to pull the hall door. Check knife mutual agreement and landing door open wheel lock hooks, landing door lock hook should be solid and reliable, the hook lock engages minimum length should not be less than 7 mm. Ensure that when the landing door lock hook electrical contact is closed, the hall door closed lock must be reliable.
Sensitivity (9) contact contact key switch emergency stop button inside the box to check on the car dashboard and automatic bounce, check the car door safety edge switching operations, the impact force of its action should not exceed 5 N. Carefully check the installation location of iron touch the upper and lower switch, forcing the switch box for speed limit switch overrun fight off the touch wheel racks and mutual agreement with the car situation, its location should be with good electrical contact to be reliable action .
(10) check each landing call button, landing signal display installation boxes and other safety switches. Each landing call button on the right side should be installed in the hall outside, from the ground 1.2 ~ 1.4 m, and the distance between the edge of the button box and landing door edge is 0.2 ~ 0.3 m. Landing signal display boxes should be installed in the entrance hall at the center of the hall door above 0.15 ~ 0.25 m, where the line and landing door centerline deviation should not exceed 5 mm. Landing signal display device with a call button can also be assembled together, side by side installation of an elevator landing signal display box installation height deviation should not exceed 5 mm, the call button installation height deviation should not exceed 2 mm.
2 Lift the test run test
When the basic items adjusted itemized checks, you can try running the elevator test.
2.1 Simulation test run of the elevator simulation is running, the motor should be combined with the brake solenoid power cord removed, i.e., in the case of the hoisting motor and a brake power failure simulation test. , As follows:
(1), respectively, in the car by pressing buttons and emergency stop button selected layers by hand to observe the corresponding relay in the control panel in the engine room, the contactor situation meets the orientation of the action, for speed, braking and other emergency parking brake control requirements. In traction motors, brake power cord into the voltmeter terminal, if the voltage meter indicates the voltage magnitude to meet the requirements, indicating the electrical control system is working properly, otherwise indicates a link within that circuit fault exists.
(2) one by one to check the hall door lock hook on the linkage switch, check the limit switch, forced to change speed switch, limit switch and its upper and lower limit switch the drive to fight off the rack, car top safety window switches, safety gear switch, speed limit rope device protection switch, emergency stop buttons jiaoding overhaul protection switch, in order to observe the operation of various safety switch sensitivity and reliability. Various safety switch can be manually simulate the action, to see if it can play its due role in the protection system. If the test hall door is not closed, the corresponding landing door lock linkage hook switch should not be closed, the door interlock relay will not be energized, the elevator can not start running.
(3) in the outer layers of the station hall outside call by pressing the button to see action for the relays and the corresponding lights show compliance.
(4) above, based on the inspection and approval, release the brake electromagnetic brake, disc wheel sets at the end of the traction motor shaft, make positive and negative direction of rotation, in order to observe whether the traction machine transmission parts jam phenomenon and the rotation is flexible, and check the bearing grease and other rotating part. You can test confirmed when energized, the first main rope rope hoisting machine on wheels take off, turn the traction motor and the brake solenoid power lines, and then in slow, fast forward running short test run state.
Check the focus of the 2.2 analog test run
In the elevator simulation test run to check in, the problems found should be corrected to adjust and focus on checking and adjustment
Correction of the following questions:
Mutual agreement (1) to check, correct and guide shoes elevator car and rail between jam and check Songkuang place.
Distance between the floor and the elevator car station hall door sill between the layers (2) check whether the place collide.
Up (3) Check that the shelves station downward change between quick-drying and separated from the magnetic reed sensor on board the car, and the car, the lower layers of the reed sensor stations and the corresponding magnetic isolation plates mutual agreement between the situation. If the collision, you should adjust the installation location.
Mutual anastomosis door lock hook knife and rubber layers Tingmen boiling oil (4) Check on the car, its hall door interlocking switch action is flexible and reliable.
(5) Check the limit switch and the upper and lower limit switches offside play off frame, upper and lower limit switches, forced to change speed switch and other safety facilities, operating reliability, timely adjustment of the correction of the car hitting the shelves of iron with the protection switch collision roller nip position.
(6) observed in the call up, the process run in reverse phenomenon accompanying cables for the car and its accompanying hoistway cable junction box, cable support, trunking, conduit, junction boxes and other compliance requirements distance Claim.
(7) through the motor no-load operation, the gap observed brakes and hold the brake loose brake strike first case, the measurement proof solenoid stroke, pressure, brake shoes and brake between the wheels. Transmission oil temperature measuring traction machine, bearing temperature, traction motors and brake solenoid temperature rise, while the measure line voltage and load current run-time calibration phase sequence and the traction motor power steering, etc., and make a record.
2.3 idle test run
After the simulation test run and inspection requirements are in line with the correction can be car and counterweight rope to hang onto traction sheave hoisting machine, perform slow commissioning tests.
Governor tripping during the test, the elevator car can slow down from the second floor to run, during operation, on the car top man pulling the rope handle safety gear, safety gear action should be flexible and reliable, Meanwhile safety gear should switch action to cut off voltage relay circuit, so that the control line to lose power, to achieve lift the parking brake.
Express 2.4 test run
2.5 load test run
Elevator test is divided into three types, namely load test, half load and full-load test test. Under continuous power of 40% of the cases, each time a test run should be at least 2 h. Elevator observed in the starting, with or without severe vibration when running and parking brake is reliability, and a variety of programs to control the elevator signal is good. Require brake pull coil temperature should not exceed 60 ℃, traction machine gear oil temperature should not exceed 60 ℃, and the oil temperature not exceeding 85 ℃.
2.5.1 static load test
The so-called static load test, the car is placed in the base station, cutting off power to impose requirements load test. Elevators, medical elevator and freight elevators 2t above 200% of rated load can be applied, and other types of elevators may be applied to 150% of its rated load. Static load test duration of 10 min, each bearing member for damage observed phenomenon, with or without traction rope slip slip car phenomenon, brake brake is reliable.
2.5.2 overload running test
The car carrying 110% of the nominal weight, while the power sustained rate of 40% of cases, and from running 0.5 h, observation elevator starting, braking is safe and reliable, whether traction machine is working properly, leveling error is within the allowable range inside.
