Electric hoist control box working conditions

Electric  rope hoist  in the control box by the cabinet, contactors, transformers and other components, according to user requests for different lengths of multi-conductor cables and flashlight door, each control box is equipped with electrical schematics, wiring terminals are consistent with the schematic clear numbers, user maintenance, wiring. The following detailed description of your electric hoist control box working conditions.

1 control box use less than altitude does not exceed 2,500 meters,
(2) the ambient air temperature is between -20 ℃ ~ +40 ℃.
3 air humidity of 90%,chain block while the monthly average minimum temperature is 25 ℃, and taking into account temperature changes on the surface of the product Cream;
4 workplaces should have no violent shaking and vibrations;
5 In the absence of explosive medium, the medium does not corrode metal and damage the insulation of gas and dust (including conductive dust);
6 In the absence of rain and snow (rain,load chain except the control box).

Prevent rusting hoist effective method

    Electric  rope hoist  after all metal products, daily use and improper maintenance are particularly vulnerable to rust, rusty after hoist between the various components will affect the gear meshing, resulting in intense friction, thus affecting the hoist use the following to introduce you to prevent electric hoist the most common and effective method of rust.
       1, the exposed surface of the hoist and exposed threaded surface, etc., should apply anti-rust grease.
       2, electric hoist gearbox parts should be coated with anti-rust oil barium sulfonate grease, inspect conditions and corrosion protection film is complete.
       3, the hook bearing, rust grease to be injected.
       4, if the wire rope electric  hoist equipment, wire rope should be coated surface rust lubricant.
       These are the most commonly used electric hoist everyday ways to prevent rust, in addition, if the hoist has rusted parts, we can first scrape off the rust with hardwood chip re-oiled, such as the film is damaged or deteriorated, application kerosene or gasoline to clean, apply a rust grease. To remind you if you do not use the hoist case,wire rope winch hoist chain or rope part should tarpaulin or plastic film wrap for protection.

Explosion-proof electric hoist qualified indicators

  Electric  rope hoist  factory undergoes rigorous inspection and testing work, especially with the explosion-proof function lifting equipment, then the proof electric hoist achieve what criteria to be qualified products? The following introduces you to:
       First check the temperature insulation resistance greater than 1.5MΩ, ensuring no leakage gear parts, electric hoist operation when the noise should be less than 85 db.
       Second, we must test for detecting whether proof  lever hoist  qualified, ①, dynamic load test: 1.25 times rated load five times repeatedly lift, air start at least three times, the trip less than 2m. ②, brake down test, according to the national standard lifting speed brake slipped less than 1%. If there is a second brake, the second brake support to be tested load capacity. ③, electric hoist motor inlet voltage adjusted to 85% of rated voltage for load test. ④, blood pressure tests.
       Finally, there is the appearance of proof  wire rope hoist  qualified testing with paint must be uniform, bright, consistent color, paint adhesion grid method to meet the inspection requirements.

Electric hoist double girder crane state of health after use

    Electric wire rope hoist double girder crane lifting equipment as a large part of all aspects of the strict requirements, but in daily use after you noticed any abnormal mechanical condition, careful attention to observe order to ensure that electric hoist double girder crane life and maintenance of the following to introduce you to hoist double girder crane after use health status should be what?
         (1) electric hoist double girder crane rope after use should be no breakage, thinning, core prolapse,lever hoist twisting and other conditions occur;
         (2) machinery after use with rope fixed to the clamp, plate, wedge block should not be loose, not less than the number of clamps 3, the number plate is not less than 2;
         (3) electric hoist double girder crane after the opening of the increase in the use of the original openings no greater than 15 per cent of twisting deformation of the situation can not be larger than the original ten percent;
         (4) and brake drum after use should be no cracks, loose condition, reel wall thickness of more than eighty percent of the original;chain block brake band thickness as the original more than 50 percent;
         (5) electric  rope hoist  double girder crane safety in the use of the volume should be more than two weeks later, the balance wheel is not loose.

Explosion-proof electric hoist six trials

   In order to ensure the safe use of explosion-proof electric  rope hoist, electric hoist in the factory have to go through the following six tests.
Type test: in accordance with the design requirements of a manufacturing explosion-proof electric hoist tests conducted to test this design meets certain specifications.
Conventional test: also called factory test, explosion-proof electric hoist each device or device during manufacture or after the completion of the tests carried out to ascertain whether a particular device or equipment standards.
Test medium: to test the electrical characteristics of various test medium in general, comprising: an insulating, static electricity, voltage, etc.
Sample test: explosion-proof electric  wire rope winch  several randomly selected sample test, the sample is also used to ascertain whether a particular standard.
Life Test: To determine the required proof hoist may reach the life conditions of testing, or for the evaluation and analysis of the product life characteristics of tests carried out are destructive tests.
Tolerance test: including certain period of time taken for a certain purpose other provisions specific operating conditions,manual block the explosion-proof electric hoist tests carried out, such as the repeated operation, short circuit, over-voltage, vibration, shock, etc., is a destructive test.

The most widely used proof tools

   In the riot tools and lifting sling, in addition to the most widely used explosion-proof electric  rope hoist  outside there are a lot not known to everyone, such as: electrical riot, riot lighting distribution box, explosion-proof button box, riot corrosion outlet box, Vandal-proof junction box, riot sound and light alarm, riot control button, hoist button riot, explosion-proof circuit breakers, riot bells, riot ballast, electromagnetic lifting riot riot tools such as first off the lifting spreader etc..
These tools are able to riot in high-risk places with explosion-proof, hazardous range small role, the use of these tools riot more secure and reliable,lever hoist able to reduce the occurrence of dangerous operation.
        Explosion-proof electric hoist is a special tool for lifting slings, lifting slings is one for a wide range of industries, the use of more safe and reliable, able in the petroleum, petrochemical, gas stations, oil depots, gas, chemicals, military, electric power, mining, electronics, railways, and other potential fire and explosion hazard environment, the job impact of the product will not produce friction between mechanical sparks to effectively prevent fire accidents, ensure that state property and personal safety. Explosion-proof electric  wire rope hoist  machinery and mechanical maintenance is essential for special tools.

Rotate the hook phenomenon

   Rotate the hook often occur without any warning lifting operations in the device, when the crane lifting weights,rope hoist the hook spin up, worn around the hook and boom top pulley rope twisted tangled between being the heavy lifting is also rotated together with the hook up, then have been unable to continue lifting or lowering a weight lifted. Rotate the hook lifting operations will affect the normal conduct of a serious threat to the safety of operating personnel and equipment, it is necessary to avoid its occurrence.
       Rotate the hook with the following factors:
       (1) The more large cranes, lifting height of its higher, that boom among the top rope pulley block and hook longer the greater the possibility of rotating hook;
       (2) into a single hook wire rope reeved match the number of matches than double the number of rotating hook is easy to make and wear around the steel wire rope of a small number of matches,wire rope winch the greater the possibility of rotating the hook;
       (3) exposure to a single rope greater the weight, the greater the possibility of rotating the hook;
       (4) The dimensions of the hook component and smaller the size of the pulley, the greater the possibility of rotating the hook;
       (5) Operation crane hook landing speed is not stable, especially when heavy loads from the ground,manual hoist increasing the likelihood of the hook rotation.

Electric hoist unlimited remote control technology

 Electric  lift hoist  under normal circumstances are used by people to follow the control button on the ground, using the wired remote control. Nowadays with technology innovation wired control has been replaced by wireless.
Electric hoist wireless remote control is mainly the use of advanced electronics and wireless communications technology for electric  wire rope hoist  in the job offer high-performance, reliable data in the remote distance transmission scheme. Electric hoist wireless remote PLC via wireless multiple-way switch, analog transmission, multiplexing, on a distance of 100 meters per one thousand meters. To-point communication, but also multipoint communication, without additional programming, no wiring, no electrician can debug.
        Electric  rope hoist  wireless remote control technology allows us to use a simple, more convenient operation.

How to repair and fix because of power outages caused by the failure to hoist

General electric  rope hoist  is a lot of construction machinery will be used, but even the best machines will have trouble, when, where mainly solve recurring failures such as power outages. Mainly because of power outages did not hoist the rated working voltage is turned, unable to work, the reason there is a solution with the power supply system is not right to send electric power electric hoist, hoist the main, the control circuit of electrical damage, the line is disconnected or bad , such a situation, the need to repair the main, the control circuit, be sure to hoist the motor is disconnected from the power line, when the confirmation Lord, control circuit trouble, before re-commissioning; hoist motor starting torque is too small, so  lift hoist  lifting not moving goods, and can not work, check with a multimeter or voltage meter and other measuring motor input voltage, indeed due to low voltage, so that the motor can not be started, the need to restore the normal system voltage, etc. before using electric hoist. Do not overload the production of an electric hoist, when the goods are excessively overloaded, do not move cargo crane hoist motor only make noise, but not running, and in severe burning motor, or even cause an accident, then should immediately stop using the manual hoist  in the lifting process occurred broken teeth, broken shaft brake failure occurs, conventional electric hoist can not play a protective role in the accident consequences will be disastrous. Load protection overload protection is common, for some special circumstances, requiring electric hoist crane being lifted can not occur on the rail car stuck or broken rope or fixed rope off phenomenon, it requires a super electric hoist, underrun protection. Electric hoist overspeed protection is also necessary, when the electric hoist conical surface and the second brake brake brake surface wear or planar grid voltage fluctuation, set in the high-speed shaft speed sensor will cut off the main power from the electric hoist to the protective effect.

About electric hoist lifting and durable method

         Electric  rope hoist  lifting hanging objects and run when improper methods. Electric hoist then make hanging objects swing accidents. Electric hoist lifting hanging objects, when the wire rope or chain tension should be parking, electric hoist according to the direction of the hook again to identify the hook shake while lifting workers should check whether hanging objects hanging in prison;hoist equipment electric hoist lifting is not too Meng, hanging objects from the obstacle when accelerating until after lifting speed; electric hoist hanging objects runtime. Under the conditions allowed by the rigger hoist hanging objects in the rear help steady object and under the command of the rigger run around obstacles. Do not run electric hoist intermittent, long-distance running, it is best to send electricity long run as well.
      Features: Small size, light weight,wire rope winch easy operation, the chain is more resilient, and more rugged wear at work to ensure the safety. And the chain hoist is equipped with a chain bag, so that looks clean and tidy electric hoist, chain bag is also equipped with anti-rust oil, so when the electric chain hoist when not in use on the chain bag will not rust, extend the life of electric hoist!

Pulling Device for electric hoist crooked importance of the work

 Electric hoist is one of the procedures specified "no pull oblique hanging crooked", but in the actual lifting process, the quality of personnel due to construction or objective conditions caused widespread pulled oblique hanging crooked phenomenon. Once that happens, it is easy to damage the electric  wire rope hoist   ranging from making cable, wire rope scrapped, while in the whole electric hoist scrapped or personal injury, resulting in some economic loss, seriously affecting the construction production.
     For problems in practical work designed a pull oblique hanging crooked can prevent a device, the device is the use of oblique hanging crooked pull rope when a certain deflection angle, making installation on the  lever hoist  limit switch work, which automatically disconnects the lifting contactors, limit lifting capabilities. The mechanical part of the device consists of Shengka, two welded assemblies with a stopper components.
     1 Shengka is soldered with the balance wheel relative to the center of the arc at the lowest point of the housing, having regard to the design principles in either direction from the protection function can be, so the design component 2, the center hole is designed to be round shape, thus making each direction oblique pull hanging askew against the deflection angle of the same; travel limit switch contact bar against pull oblique hanging crooked size of the angle to be adjusted according to the actual working conditions, For the angle becomes large, there are three methods :
Component 2 will expand the center hole; would reduce the sensitivity of the limit switch; Works First, according to the actual work situation, set the appropriate skew angle rope, when pulled oblique hanging crooked angle greater than the set value, the rope before skewness enough to make the center hole assembly 2 hole edge touches the limit contact bars, causing limit work. The height limit function of the device is in the lifting operation, if failure occurs due to malfunction of firearms off, but this time without the driver's ideological focus, making the hook constantly lifting. When the  rope hoist  hook fast approaching, the time has also been close hook travel limit switch contact bars, resume a lift, it will surely bring feeler shifted or on the roof, causing ST disconnected from the hook also stopped l, played height limit function.

Lifting of common terms

1 hoist
By the Department of Public hanger mounted on the drive unit, transmission, brakes, and roll up flexible member, or clamping device lifting small light lifting equipment
2  manual hoist s
By the Human traction chain and sprocket drive through, and finally by the star wheel or have their nests reel lifting chain sprocket to drive extract the hoist lifting device
3 lever hoist
Driven by a human through the trigger wire rope or chain to extract device driven hoist movement
4 wire rope pulling hoist
Driven by a human through the trigger wire rope clips connectors, alternating traction rope to extract device driven  rope hoist  movement
5 chain lever hoist
Driven by a human through a nest trigger reel lifting chain sprocket to drive extract device hoist movement
6 electric hoist
Driven by electric motors, the final reel, the star wheel or sprocket nest reel lifting rope or lifting chain, in order to extract device driven hoist movement
7 light small lifting equipment
Compact structure, simple operation, easy operation, the operating range of the projection points, lines based portable crane
8 jack
Rigid top piece as a working device, through the top or bottom bracket claws in a small itinerary portable lifting heavy lifting equipment
9 jackscrew
Using screw or screw driven down the sleeve as a rigid top piece of jack
10 rack jacks
Used as a rigid top piece rack jack
11 hydraulic jacks
Using plunger or cylinder as rigid top piece of jack
12 tackles
By the fixed pulley block, pulley block and sequentially moving around a fixed pulley and movable pulley  chain Block  ng ropes consisting of light and small lifting equipment
13 pneumatic hoist
Compressed air-powered hoist
14 winch (hoist)
Power-driven reel via a flexible member, means to drive movement extract hoist

Best electric hoist hanging objects hanging around 0.5m from the ground

  Electric hoist hanging objects from the car and run when improper methods, electric hoist then make hanging objects swing accidents. Electric  rope hoist  lifting hanging objects, when the wire rope or chain tension should be parking, electric hoist according to the direction of the hook again to identify the hook shake while lifting workers should check whether hanging objects hanging in prison; electric hoist lifting is not too Meng, hanging objects from the obstacle when accelerating until after lifting speed; electric hoist lifting of hanging objects is not easy too high,hoist equipment generally over a secure channel up to 0.5m for the good things.
      Electric hoist hanging objects runtime. When conditions permit, it is best hanging around 0.5m from the ground by rigger behind the hoist hanging objects help steady object and under the command of the rigger run around obstacles. Do not run electric hoist intermittent, long-distance running, it is best to send electricity long run as well. Electric hoist hanging objects should be to ensure the smooth running,wire rope winch electric hoist if hanging objects swing or jitter, should be running side edges steady running hook, not let it shake or swing.

Stage electric hoist motors sealed in aluminum rims cylindrical motor housing Nagakubo

Stage-specific part of the chain hoist electric hoist, also called the  lift hoist .  Stage electric hoist in strict accordance with touring exhibitions to design production, surface treatment black, bright lasting, 110 volt control circuit heat treatment, forming a steel chain guide plate to the positive and negative way and designed to be used around the clock, with a can adjusting screw limit switches, higher reliability, chain galvanized, rust, grease packed in the gear box, to prevent the oil droplets penetrate into the arena,  rope hoist  motors sealed in aluminum rims cylindrical housing within the permanent warranty motors, suitable for use with a variety of controllers and circuit distributor connected.

Stage electric hoist features:
An efficient, lightweight motors, non-asbestos brake system, low energy consumption.
2, stamping steel shell, lightweight and sturdy.
3, high-strength safety hook to withstand impact of accidental overload fracture does not occur, overweight only gradually deformed.
4, lightweight, attractive and durable molded chain bag.
5, the limit switch: limit switch hanging under the hanging device, the motor automatically stops to prevent the chain beyond, to ensure safety.
6, heat-treated steel chain guide plate forming.
7, easy to operate,hoist and trolley easy to maintain.
8, with positive and negative way and all-weather use and design.
9, with adjustable screw limit switches, higher reliability.
10, chain galvanized, rust.
11, mounted on the gear box grease to prevent oil droplets penetrate into the arena.
12, hoist motors sealed in aluminum rims cylindrical enclosure permanently protect motors.
13, suitable for use with a variety of controllers and circuit distributor connected.

Prevent damage to wire rope electric hoist method

Damaged wire rope electric  rope hoist  oil there are many, the most common situation is a broken wire rope appeared, mainly by the following three reasons:
1 Normal broken wire; normally broken wire is no way to prevent the wire rope is wearing parts, new electric hoist generally take several years to appear wire breakage situation;
2 hoisting broken wire; hoisting rope guide after the break, causing chaos around the rope, turn out the drum area,wire rope winch hinged to the motor, gearbox parts lead rope breakage. Hoisting broken wire is completely prevented. In addition to the original machine comes with the stopper out of stock can be added in addition to a hammer stopper.
This will not appear hoisting this phenomenon;
3 overload broken wire;Manual block lifting because the operator mistakenly estimate the weight of lead weights more than nominal weight, which in rare cases likely to occur. As long as the operator estimates carefully before lifting it can be avoided.

How to choose electric wire rope hoist ring

To make a reasonable selection of seals, wire  rope hoist  must be familiar with a variety of forms and characteristics sealing device, the sealing material characteristics and conditions of use of the sealing means, such as the size of the working pressure, the working environment temperature, speed of the moving part . The actual conditions of use and allows the use of seals compared to the condition, it must ensure that the sealing device has a good sealing performance and long life.

Sealing material has to be compatible with the hydraulic oil, its hardness to the right. Electric wire rope hoists rubber hardness level of the system working pressure to choose. System pressure is selected high hardness rubber seals, pressure is too high, the need to design the support ring.
To make reliable sealing, long life, in the design of the seal groove, there must be an appropriate amount of compression ratio and tensile, compression rate can not be too large nor too small. Increase in the compression stress is too large, friction increases, accelerating seal wear, also easy to damage distorted short life, sometimes resulting assembly difficulties; too small, the sealing is not good, resulting in leakage.
Ring because the structure is simple, easy to install, good sealing performance and reliable operation, as static sealing when almost no leaks, it is currently used widely seals. Electric wire rope  lift hoist  is less than the amount of stretch the seal and outer circles of the 0-ring, in terms of increased life expectancy considerations, the design should be avoided centerline diameter ring is stretched, it should be possible according to the ring GB for choice, and wire rope  chain block  seal groove should be designed according to the appropriate standards. In the case of last resort only to design, but the size tolerances must be strictly controlled to meet the requirements roughness, because the sealing groove width is too large or too deep can cause the amount of compression caused by not enough leakage.

Stage electric hoist brake is set upside down

Stage electric hoist can be used while being hung upside down can also be applied, in order to ensure proper use of brakes should meet certain safety rules, the following stage to introduce you to lift hoist  brake is set upside down common sense, for your reference.
Stage electric hoist power-driven hoisting mechanism and operating agencies should set the brake. After an accident may result in significant risk to or loss of electric hoist lifting mechanism, the system must be set each drive two separate working brake.
Stage electric hoist used as a lifting mechanism lifting the molten metal, its brake setting shall meet the following requirements:

a. When the nominal weight greater than 5t,chainb lock the stage hoist addition to setting a working brake, it must also set up a safety brake, safety brake is set in the electric hoist low level, when the working brake failure or transmission parts broken off, can be reliably amount of support to live

Constant load;
b. When the nominal weight is less than or equal to 5t, the stage setup work except electric hoist brake, but also should be in the low-level safety brake is set, otherwise the stage  rope hoist  shall be 1.5 times the nominal weight by design, or use of selected units of the crane lifting capacity

Is the maximum weight of 1.5 times, and with clear signs from the weight of the maximum weight allowed.

Electric wire rope hoist poor contact failure

Lugs loose, poor contact, resulting in failure because the  lift hoist  during transport by vibration is relatively large, the processing method is very simple, is to be checked before installation, sturdy.
Button switch on the handle is bad, cause may be due to a serious bump button switch handle, or internal control line break. It is necessary to promptly check buttons and thread. Or replace the handle cable in use kinked cables prohibited.
Fairlead damage caused by the reason is pulled oblique hanging crooked, lifting is not vertical, excessive force, etc., guide rope wearing parts belonging to the device, the need for timely replacement if damaged, in addition, the operator be sure to follow safety procedures.
Electric wire rope hoist  is walking on the car shaking, may be due to causes not straight track, or equipment installed improperly adjusted. Solution Check renovation track and adjust its installation.

The following irregularities prohibited electric chain hoist

Electric Rope hoist  when in operation, its use must be strictly complied with the rules, if used improperly hate could cause significant casualties, whether it is for personal, family or business will result in significant losses. The electric chain hoist use the most is that it's easy to overlook the shaking problem, it directly affects the lives and safety of staff.
So how to control and prevent electric  chainb lock  shake it? Following methods is our years of production practice, summed up the electric chain hoist operator will have a good guide.

First, the use of electric chain  lift hoist  them, do not hang up the load side of the beam near the end of the state of operation, it is easy to cause heavy falling or accidental encounter people, etc., will result in serious injuries and personnel casualties.
Secondly, electric chain hoist in the lifting process can not be horizontal pull, so can easily lead to hoist shaking phenomenon occurs, resulting in a dangerous place.
Finally, and most likely cause of the accident, and that is the use of electric chain hoist lifting process not sharp load, this will cause pressure surge, the most prone to accidents.

Millennium arctic - group hanging electric hoist use should pay attention to what?

    This year Xiahan see temperatures hit the Northern Hemisphere, from the eastern United States, Europe and Asia, have experienced meteorological records hottest summer in 130 years, but after the winter temperatures begin to dip, Northern Hemisphere temperatures may be lower than in previous years. This abnormal climate led to the "Millennium arctic" argument, in lifting machinery industry group hanging electric Wire rope hoist  most frequently used in the winter, the group used in construction crane  lift hoist  the field of multi-climbing frame, climbing the upgrading of large tanks group hanging before use and the process should pay attention to what? For you to explain the following:
    1 group hanging electric hoist inspection before use
    ① In the operator within walking distance and the weight should be on the route through no obstructions.
    ② hand control button up and down, left and right direction of action should be accurate and sensitive, motor and gear should be no abnormal noise.
    ③ brake should be sensitive and reliable.
    ④ group hanging electric hoist orbit should be no foreign matter.
    ⑤ down stopper action should be accurate.
    ⑥ hook retainer nut should be tightened.
    ⑦ hook in the horizontal and vertical direction of rotation should be flexible.
    ⑧ hook pulley should be flexible rotation.
    2 flanking group hanging electric hoist crane unloading heavy objects shall not prohibit the use of overload.
    3 In use, the operator should always check whether there is chaos buckle rope, knotted, off tank, wear phenomena, if there should be immediately removed, and should always check the guide rope and limit switches are safe and reliable.
    4 in the daily work shall not be artificially stopper to stop the use of heavy lifting or stop the device operation.
    5 After work, turn off the power switch, disconnect the main power supply.
    6 should be set up specialized maintenance personnel hoist weekly main performance and security status check once found fault immediately removed.
    7 fan motor brake on the wheel brake ring, and not stained with grease, adjusting nut should be tightened, so as to avoid brake failure and accidents.
    8 group hanging electric rope hoist  part of the lubrication should be added the right amount of lubricating oil, lubricating oil to clean, free of other impurities. About two months to replace oil once. For lifting and running reducer reducer must be added prior to use enough oil.
    9 group hanging electric hoist use, found fault should be promptly cut off the main power supply.
    10 group hanging electric hoist does not work, does not allow heavy objects hanging in the air, in order to prevent permanent deformation components.
    11 After use, you should stop at the designated place of safety. Covers should be located outdoors.
    12 prohibits the opposite direction while pressing two buttons, the other can manipulate.
    13 Lifting reducer overhaul disassembly may not use a screwdriver, flat shovel hit the joints, the application of a wooden hammer gently tap the protruding part of the box to avoid damage to the cabinet and lid sealing plane.
    14 hoist the working environment temperature -25 ~ +40 ℃
    15 does not apply to group hanging electric hoist filled with corrosive gases or relative humidity is greater than 85% of the sites, not a substitute for proof hoist, not lifting the molten metal or toxic, flammable and explosive materials.