Do height limiters still need to be type tested?

Why do height limiters still need type testing? The high-speed limiter does not need a type test, but only needs. The height limiter is very accurate and never allowed to be arbitrary. It's really very low, or exceeded, this limiter.

In the case of altitude limiters, this matter must be tested, because it can only be used after experimentation, and if it is not experimented, it may cause some malfunctions during training.

Height limiters require a type test, which is the standard for the restriction period.

Do I need a type test for the height limiter? I think this one needs to be debugged.

What the height limiter needs to write is that you really need to do some form of testing before using it, so as to achieve the predetermined target effect, and the attitude is better.

Do height limiters still need type testing? Definitely, no matter what kind of limiter you encounter, it still has to be there. There must be a match.

It is necessary to do special equipment type test, and safety protection devices such as cranes and elevators belong to special equipment.

They definitely need to continue experimenting, because only by constantly doing experiments can they discover some of their shortcomings and use it better.

The height limiter is the business that needs the form, and I cannot detect it if it is not the same.

Does the height limiter still need a driving test? I think this has to be type-tested.

In this phase of the route, it is necessary to conduct new experiments, so it is better to take it.

Do height limiters still need a form test? Do height limiters require a formal test? Then there are already manuals, and you can follow the instructions to go up and operate the program.

Because the height limiter is specially designed to detect height, it must go through a series of detection measures before it can be officially used.

Height 37,This should be brushed.,Small stone event.,This should be.,Anyway, it's not good to see people and it's more than time.,So this should also be more classic and practical.。

Do height limiters still need formal experiments? This should be needed, or you should go to this area to find out, or find a professional team to help you.

The high-altitude welding machine still needs to be carried out step by step, and the new series of high ventilation should also be trained, which is more reliable and safer.

The crane lifting height limiter does not need to do 3C certification, and only needs to do the type test of special equipment.

Type test is what needs to be done, type test is the only basis for product finalization, you can look at the "Safety Valve Safety Technical Supervision Regulations" has detailed requirements for type test.

The adjustment of the lifting height limiter is carried out under the no-load of the tower crane, and the micro switch is pressed respectively. Confirm whether the two-speed lifting limit micro switch is sensitive and reliable.

When the micro switch corresponding to the cam is depressed, the power supply of the fast rising working gear is cut off, and the lifting hook can only rise at low speed. When the micro switch corresponding to the cam is depressed, the power supply of the rising work is cut off, and the lifting hook can only be lowered but not raised.

When the hook is lifted, the vertical distance from the top to the bottom of the trolley is meters or 1 meter, the shaft 2z is mobilized, and the cam 2t action is made to make the micro switch 2wk instantaneously replaced, and the nut is tightened. The lifting hook is lifted at low speed, so that the vertical distance from the top to the bottom of the trolley is 1 meter or meter, and the shaft 1z is mobilized, so that the cam 1t action is made to make the micro switch 1wk instantaneously replaced, and the nut is tightened.

Carry out multiple no-load verification and correction of the height limit of the two gears, and the height limiter should be readjusted when the magnification of the hook pulley group is changed.

Extended information: The working principle of the tower crane height limiter.

When the construction hoist cage runs upwards, the small rollers on the travel switch are in the concave point of the convex and concave tie bar - the energized position. When there is a mechanical failure of the elevator or the operator misoperates, the cage has been raised to the limit height, that is, at the set height of the lifting height limiter, due to the cage beam pulling the thin wire rope and convex and concave tie bar.

At the same time, the small roller on the travel switch moves up to the convex and concave pull bar due to the action of external force, and the small roller moves to the convex point from the energized position of the mouth point, so that the travel switch is de-energized, the upward power supply is cut off, and the winch motor stops running, so that the cage stops running.

The convex and concave pull bar of the manual lifting height limiter makes the small roller on the travel switch reset from the bump point to the energized position of the concave point, and the car can be started.

1) Lifting weight limiter: also known as overload limiter, is a kind of safety device that can make the crane not overload operation, when the lifting weight exceeds the rated lifting capacity, it can automatically cut off the power of the lifting mechanism to stop or send out an alarm. There are two types of lifting limiters: mechanical and electronic.

2) Torque limiter: for luffing cranes, a certain amplitude is only allowed to lift a certain lifting weight, if it is overweight, there is a danger of tipping over. The torque limiter is a kind of protection device developed according to this characteristic.

In a certain range, if the hanging object exceeds its corresponding weight, the circuit is cut off, so that the lifting can not be carried out, and the stability of the crane is guaranteed. There are three types of torque limiters: mechanical, electronic and compound.

3) Height limiter: also known as hook height limiter, it is generally installed at the head of the boom, and when the hook slides to the limit position, it will hold up the lever. Depress the limit switch, cut off the circuit to stop, and when closing again, the hook can only be lowered.

4) Stroke limiter: a safety device to prevent the crane from crashing or restricting the driving within a certain range. It is generally installed on the inside of the active trolley, mainly to install a travel switch that can toggle the lever.

In addition, at the end of the track (in the position of running limit), a fixed limit position baffle is installed, when the tower crane runs to this position, the limit baffle plate touches the lever of the travel switch just to cut off the power supply of controlling walking, and the tower crane can only run in the opposite direction when closing.

5) Amplitude limiter: also known as luffing limit or amplitude indicator, there is an amplitude indicator hanging on the crane arm of the general jib crane. It consists of a fixed circular indicator disc with a plumb movable hand mounted in the center of the disk.

When luffing, the hands indicate the rated lifting capacity at various amplitudes.

How to apply for the three-dimensional garage production license A-level qualification.

First, the registered capital of the enterprise is required to reach 15 million yuan, and second, for the requirements of personnel, there must be 13 mechanical engineers, 8 electrical engineers, the technical person in charge is a senior engineer, and the inspectors should reach 8, including 3 engineers. Skilled workers require more than 8 electricians, and welders must have more than 40 personnel and qualifications.

Third, the enterprise has certain factory facilities, the building area of the plant is required to be 3,000 square meters, and the structural workshop must have at least 1,600 rooms.

Fourth, enterprises are required to have certain production equipment, including:

1) Straightening and leveling equipment for section steel.

2) Welding equipment.

3) Shearing and bending equipment.

4) Surface coating equipment.

5) Steel pretreatment and rust removal device.

The production of products requires the use of process equipment

1) The main machining process equipment equipped according to the process requirements.

2) Assembling the platform.

3) Lifting equipment.

4) Test site.

Fifth, how to handle the three-dimensional garage production license A-level qualification enterprises should have testing instruments

1) Non-destructive testing equipment.

2) Sound level meter.

3) Insulation resistance meter.

4) Ground Resistance Measuring Instrument.

5) Multimeter.

6) Theodolite.

7) Level.

8) Lux meter.

Sixth, how to handle the three-dimensional garage production license A-level qualification enterprise production needs to use technical documents, such as national standards, 1, drawings: all the drawings of the various models and specifications of the product that apply for the manufacturing license are complete, correct, complete and unified, in line with the relevant standards, the number of sets (copies) meets the production requirements, the drawings are signed completely, and check whether the prototype is manufactured according to the drawings.

2. Requirements for production process documents: the process documents of key processes, welding, main machining parts, assembly, painting, inspection, etc. are correct and complete, and conform to the process flow of the factory.

3. Component type test report: lifting weight limiter, torque limiter, lifting height limiter, anti-fall safety device, brake, anti-collision device (buffer). These products need to be type-tested.

Other process references.

National Quality Inspection Pot [2003] No. 174 document.

Let's go to the special equipment quarantine and inspection center.

The provincial quality supervision bureau ......

There are many types of lifting height limiters, the most important ones are: collision limit switches, and artificial intelligence limit switches.

Collision limit switches are now relatively rare.

The artificial intelligence limit switch is more advanced.

The collision limit switch and your manual switching power supply are connected in series.

In this case, a switch is added to the motor power line.

Smart limit switches, on the other hand, require a set value. In fact, it is also a switching power supply.

The height limiter is a stop switch, connect it with the electromagnetic coil of the starting contactor of the motor, and you can do it, and I really want to help you look forward to adopting

If you don't understand this, you can ask a professional master to teach you, electrical things can't be sloppy.

This should have a special interface, if you don't know, let the after-sales service to pick it up.

Tong Yuanxiang certification consulting for you to answer:

Pneumatic hoist is an upgraded product of electric hoist; It should belong to special equipment like electric hoist - crane - light lifting equipment; The special equipment catalogue ** is 4CE0;

Manufacturing License Conditions:

1. Registered B: registered capital 800W; Mechanical Engineers: 7; 4 electrical engineers ; The technical person in charge should be a senior engineer; 6 inspectors, including 2 engineers; Skilled Workers:

More than 6 electricians and more than 25 welders, all of whom are qualified for the building area of 2000 (at least 1000 for the structural workshop).

2. Basic production equipment: the main machining equipment equipped according to the process requirements, including special machine tools for the processing of reducer box body and box cover (2) welding equipment.

Tooling equipment: according to the process requirements, the main machining process equipment, such as: reel shell, welding fixture, etc. (2) lifting equipment (3) assembly workbench.

3. Testing equipment: (1) box cover center distance detection device (2) gear testing instrument and equipment (3) material physical and chemical analysis instrument (4) cleanliness testing instrument (5) electric hoist test bench (including corresponding weights, voltage regulating device) (measurable power, voltage, current, frequency, brake slippage) (6) sound level meter (7) hardness tester (8) paint film thickness gauge.

4. Drawings: The drawings of all models and specifications of all types of products applying for manufacturing licenses are complete, correct, complete and unified, in line with relevant standards, the number of sets (copies) meets the production requirements, the drawings are signed completely, and check whether the proposed sample is manufactured according to the drawings.

5. Component type test report: [if necessary] lifting weight limiter, torque limiter, lifting height limiter, anti-fall safety device, brake, anti-collision device (buffer).

It is too general to say that the scope of "lifting machinery" is too large, for example, the production of mobile cranes (small cranes and other cranes that can run) is needed.

Production equipment: (1) welding equipment, (2), automatic blanking, automatic cutting equipment, (3), automatic punching, shearing and folding equipment, (4), hydraulic press or hydraulic press, (5), numerical control equipment, (6), steel pretreatment and rust removal device (Class A requirements), (7) coating equipment, (8) flat machine. Process equipment (1) boom processing tooling (2) rotary platform processing tooling (3) frame processing tooling (4) lifting equipment (5) splicing platform (6) positioner (7) hot processing tooling (die forging, heat treatment and other A-level requirements). Inspection Equipment:

1) Standard weight (2) Straight runway (3) Pressure gauge (4) Sound level gauge (5) Static test platform (6) Thermometer (7) Angle measuring instrument (8) Ammeter, voltmeter, tachometer (9) Tubular dynamometer (10) Standard (or design) ramp or driving traction comprehensive test instrument with specified slope (11) Flaw detector (12) Chemical analysis (13) Fatigue testing machine (14) Paint film thickness gauge (15) Micrometer (16) Dial gauge (17) Hardness tester (18) Photometer.

You send out the specific name of your product, and then you send it specifically.