SC type construction hoist fall arrester ASJ40 1 2 type is very loud What s going on

What's going on with the noise from the safety device.

Install the shoulder of the anti-fall safety device into the matching hole corresponding to the bottom plate, pay attention to the safety device junction box downward, screw in the 4-D4 hole with the corresponding high-strength bolts and tighten them, open the junction box cover, string the normally closed contact of the limit switch in the anti-fall safety device into the elevator descent control loop, and then install the junction box cover. Attention should be paid to the installation of the safety device: 1

The performance of the installation bolt shall not be lower than the grade, and the four mounting bolts shall be tightened evenly during installation. The bolt specification used in the type anti-fall safety device is M12, and the bolt grid used in the type safety device is M14, and the bolts used in the rest of the anti-fall safety device are anti-falling safety devices After installation, the meshing of the gear and the rack should be checked, and the meshing clearance should be guaranteed within the range, and the visual inspection of the gear end face should be able to find the existence of tooth side clearance, and the slight swing of the gear should be felt by rotating the anti-fall safety device gear by hand, and the tooth side clearance can be measured by the lead pressing method or feeler gauge. 3.

The normally closed contact of the limit switch in the anti-fall safety device should be connected to the elevator descent control circuit and cannot be omitted.

I'll show you a picture, I hope it can help you. Sanliu Machinery Co., Ltd. specializes in the production of SAJ40 anti-fall devices, you can enter him **check, and **there should be a company **, you can consult it!

Suitable for rack and pinion lifts, the difference is the rated braking load. Generally, 30 is used for counterweights, and 40 is used for non-counterweights

SA --- name code: lift ---s; Safety device ---AJ--- feature code: Progressive ---A

40 (30) -- main parameter code: rated braking load is 40kn (30kn) main parameter code: rated action speed.

a--- Variant code.

The fall arrester is generally used in the SC200 200 construction hoist, and the fall arrester is generally used in the construction hoist where the sum of the cage weight and the rated load does not exceed 3 tons.

1. In order to ensure the safe operation of the elevator, the circuit is equipped with safety switches such as overload and speed limiting, and when the above situations occur during operation, the elevator brakes immediately to avoid accidents. Each door on the car is also limited switch, when any door is abnormally opened, the car can not start or stop running immediately.

2. Each car is equipped with an anti-fall safety device, which can effectively prevent the car from falling and ensure the safe and reliable operation of the lift.

3. The circuit of the elevator electric control system is simple, easy to operate and maintain, safe and reliable. When the elevator is in normal operation, the elevator can be operated with a handle or a button in the cage, and can be parked at any time in any position that needs to be stopped, and at the upper and lower terminal stations, the upper and lower limit switches control automatic parking, and if the upper and lower limit switches do not work due to failure, the limit switch set on the elevator can cut off the power supply in time to make it brake.

Material Hoist:

1 Safety device.

1) Lifting weight limiters and anti-fall safety devices should be installed, and should be sensitive and reliable;

2) The safety stop device should meet the requirements of the specification and should be finalized;

3) The upper stroke limit should be installed and sensitive and reliable, and the safe crossing should not be less than 3m;

4) The material hoist with an installation height of more than 30m should be equipped with a progressive anti-fall safety device and an automatic stop layer, voice and image signal monitoring device.

Construction hoist:

1 Safety device.

1) The lifting weight limiter should be installed, and it should be sensitive and reliable;

2) Progressive anti-fall safety devices should be installed and should be sensitive and reliable, and should be used within the effective standard period;

3) The counterweight wire rope should be installed with an anti-loosening rope device, and should be sensitive and reliable;

4) The control device of the cage should be installed with a non-automatic reset emergency stop switch, and the control circuit can be cut off at any time to stop the operation of the cage;

5) The chassis should be installed with a cage and a counterweight buffer, and the buffer should meet the requirements of the specification;

6) More than one pair of safety hooks should be installed on the SC type construction hoist.

2 Limiting device.

1) Non-automatic reset limit switch should be installed and should be sensitive and reliable;

2) The upper and lower limit switches of automatic reset should be installed and should be sensitive and reliable, and the installation positions of the upper and lower limit switches should meet the requirements of the specification;

3) The safe cross between the upper limit switch and the upper limit switch should not be less;

4) The limit switch and limit switch should be provided with independent trigger elements;

5) The cage door should be installed with an electromechanical interlocking device and should be sensitive and reliable;

6) The top window of the cage should be equipped with an electrical safety switch and should be sensitive and reliable.

Yes. Every time the construction elevator is installed or dismantled in the industrial and mining area, a fall test must be carried out, including the first use, reinstallation after the transfer of the construction site and the construction elevator after overhaul!

For normal operation, the fall test should be carried out regularly every 6 months or in accordance with local regulations.

One year after the speed limiter leaves the factory, it must be sent to the factory for testing.

It is mandatory.

Every time the construction elevator is installed or dismantled in the industrial and mining area, a fall test must be carried out, including the first use, reinstallation after the transfer of the construction site and the construction elevator after overhaul!

The maintenance and maintenance of construction hoists are divided into daily, weekly, monthly, quarterly and annual inspections. The construction hoist does a fall arrest test in every quarterly inspection, that is, a fall arrest test every four months to check the reliability of the speed limiting brake.

"Safety Technical Regulations for the Installation, Use and Dismantling of Building Construction Lifts" JGJ215-2010 has clear provisions on the fall test of lifts during the probation period. Newly installed construction hoists and construction hoists in use should be subject to a drop test of rated load capacity at least once every 3 months; The experimental procedure should be carried out in accordance with the provisions of the instruction manual, and when the ladder cage falls more than the meter falling distance in the experiment, the cause should be found out and the faller should be adjusted; It is effectively guaranteed that the braking distance does not exceed the meter. After the experiment and every time an anti-fall action occurs during normal operation, the cause should be found out and the anti-fall safety device should be reset.

It is a mandatory experiment, you can check the construction safety manual of the construction project, it is very clear.

Are you talking about speed limits? Compulsion.

The standard section specifications are 800 800 1508 and 650 650 1508, and the cage specifications are and 3 structural forms.

The standard section frame is all made of steel plate bending and welding, the strength is better than that of angle steel, the main components of the cage are painted, the standard section is sprayed, and the whole machine is debugged in the factory after leaving the factory.

The lifting structure is in the form of three drives, upper type and frequency conversion control.

Jiangxi Zhongtian construction elevator.

For details, you need to provide the corresponding drawings; If you don't understand, please refer to;

The high-quality and low-cost SC double cage construction elevator is geared and rack transmission, with high configuration, good performance and long life. Adopting advanced technology at home and abroad, after years of digestion and innovation, the design is novel, the structure is reasonable, the operation is simple, the assembly and disassembly are convenient, the appearance is beautiful, and the work is safe and reliable. SC type construction elevator is a kind of elevator driven by rack and pinion, which is mainly used for the transportation of people and goods in the construction of high-rise buildings.

This elevator can be easily installed and dismantled by itself, and can be increased as the building grows taller.

1. Construction hoist with single cage and double cage: The single cage hoist can become a double cage hoist after adding a cage and other parts.

2.0 90 meters high-speed frequency conversion construction hoist. The maximum running speed can reach 96 meters per minute, and the standard section of 800 800 1508 is adopted, which can save a lot of time and improve work efficiency for high-rise construction sites, and is more stable and reliable.

3.Inclined construction hoist. It is particularly suitable for bridges, towers and other buildings with angles on the top and on the bottom, and its maximum inclination angle can reach 9 °, which runs upwards along the inclined surface of the building, further ensuring the smooth operation of the construction elevator, and the length of the attachment point is consistent and easy to install.

The standard section specifications are 800 800 1508 and 650 650 1508, the cage specifications are with 3 structural forms, the standard section frame is all made of steel plate bending and welding, the strength is better than the angle steel, the main components of the cage baking paint, the standard section spraying, the whole machine is debugged in the factory after the completion of the factory. The lifting structure is in the form of three drives, upper type and frequency conversion control. The steel structure adopts high-quality profiles produced by Anshan Baode Iron and Steel, imported Schneider AC contactors, high-strength bolts, and national patented technology.

Fall arrester. SC200 200 construction elevator adapts to the construction of efficient and fast, economical, safe and reliable, so that a machine is multi-purpose, on the basis of the traditional construction elevator is equipped with a steel bar conveying device and a concrete transport device, which can transport steel bars, concrete and construction personnel, improve construction efficiency, greatly facilitate the use of construction units, avoid repeated purchase of equipment, and save money.

The difference is in the braking load, 40 for 40kN, 30 for 30kN

Units that have been recognized by the local competent authorities and obtained testing qualifications can be tested!

Changchun Branch new test instrument ****.

The current standard specifications for construction lifts, such as "Construction Lift" GB T 10054-2005, "Construction Elevator Safety Regulations" GB 10055-2007, "Vertical Guided Dual-purpose Construction Lifts in Cages" GB26557-2011, and "Safety Technical Regulations for the Installation, Use and Dismantling of Construction Lifts" JGJ215-2010 are not clearly stated. It is generally believed that the professional engineers of the user unit (construction machinery related majors) can organize the implementation, refer to the requirements of the fall test, and then make a record.

Construction Elevator GB T10054-2005 has relevant requirements.

Car drop test.

12.1. During the drop test, the most unfavorable working condition should be selected as the test condition in the rated load capacity and the rated installed load capacity.

Before the fall test, the fall safety device should not be disassembled or replaced.

When the fall test of the SC type construction hoist, the cage is driven to rise at the rated lifting speed of about 3m-v10m by operating the button box. Press the fall test button, the electromagnetic brake is released, and the car will fall in a free state until the anti-fall safety device moves when the test speed is reached, and the braking distance is measured. After the end of the test, the anti-fall safety device should be reset, and the construction elevator of the anti-fall safety device can not stop the cage should be stopped immediately for maintenance.

In the fall test of SC type construction hoist, when the anti-fall safety device is activated, its electrical interlocking safety switch should also be activated.

When the fall test is carried out on the SS type construction hoist, the cage is stopped after rising about 3 m, and the simulated broken rope test should be a sudden broken rope, and the broken rope can not be replaced by a loose rope), and the reliability of the anti-falling safety device is tested.

It should be checked after the drop test:

a) Whether the structure and connection are damaged or permanently deformed;

b) The levelness deviation of the cage floor in all directions changes the value.

Cage fall test and inspection results record table a 1.

These are the self-inspection items after the installation of the Jiuhong construction hoist is completed.

1. The elevator should be set up with a ground protective fence with a height not lower than that, and the fence door should be equipped with an electromechanical interlocking device.

2. When the standard sections of each guide rail frame are combined, the step difference formed by the dislocation of each riser joint should not be greater.

3. The installation verticality of the axis line of the guide rail frame to the horizontal datum of the base shall comply with the relevant regulations.

4. The connection between the attached wall frame and the building should be firm and reliable, and the angle should meet the requirements of the manual.

5. The operation of the cage should be stable, the stop layer should be accurate, and there should be no abnormal vibration and overheating.

6. The cable and the sliding contact frame can be dragged freely in the operation of the cage and should not be blocked.

7. For SS type cargo lift, there should be no less than 2 wire ropes for the cage hoisting, and they should be independent of each other; The safety factor of the wire rope should not be less than 12, and the diameter should not be less than 9mm.

8. When the SS type cargo elevator uses 1 wire rope for the cage, its safety factor should not be less than 8.

9. The safety factor of the lifting wire rope of the landing door and the installation boom should not be less than 8, and the diameter should not be less than 5mm.

10. The gears, racks and rollers of the transmission system of the SC type construction elevator should run smoothly, and there should be no impact, vibration and abnormal noise.

11. The contact length of the output gear of the SC elevator transmission system and the speed limiting safety device when meshing with the rack should not be less than 40% along the tooth height, the length along the tooth should not be less than 50%, and the tooth surface side clearance should be.

12. The rack connection on the standard section of the SC type elevator should be firm, and the step difference along the tooth height direction should not be greater than the docking place of the two adjacent racks, and the circum-tooth error along the length direction should not be greater than that; The gears and racks, rollers and risers should run smoothly; There should be no shock, vibration, and abnormal noise.

13. The winch transmission should only be used for non-counterweight lifts.

14. The safety protection device of the construction elevator must be complete, reliable and effective.

15. The anti-fall safety device of the construction elevator must be sensitive and effective, reliable in action, and within the validity period of verification.