How explosion proof electric hoist

Explosion-proof electric wire rope hoist  electric hoist is more common but a rather special, mainly reflected in the "explosion" word, and from this we can see the word on the product's main performance, we described in detail below is proof electric hoist electric control system.

Explosion-proof electric hoist electric control system consists of explosion-proof hoist boxes, explosion-proof button control box, explosion off the fire limiter components. Explosion-proof electrical equipment enclosure closed securely  Explosion levels to meet the appropriate requirements of its internal functions and ordinary hoist electrical installations basically the same. Explosion-proof hoist box internal electrical components are of high quality, reliability and long life of Siemens low-voltage electrical components to minimize the explosion due to an electrical fault caused the number of boxes out of the box.manual hoist In addition to the control box to run the opposite direction contactors with electrical interlocking between the outer  button button control box is also provided with a mechanical interlock between avoid misuse caused by short circuit happening. Control button box with a fine wire hanging in the explosion-proof hoist box about 1.5m from the ground under high position in order to facilitate personnel. Reset button box with a rotary-type mushroom head type emergency stop switch in case of emergency to facilitate fast the motor is stopped. Button on the control box using the arrow mark internationally accepted symbols and safety AC 36V control voltage. Limiter off the fire-proof control box by the limiter and external guide rods. Wire rope on the drum Fairlead card board push rod limiter control box and then trigger action to cut off contacts Lifting motor power.hoist and trolley By adjusting the position of the guide rod can be set to hit the block hoist upper and lower limit position but must ensure that the hook reaches the lower limit bit  wire rope on the drum 2 laps still left margin (excluding the rope under pressure lap ).

Classification of wire rope hoist

Hoist  wire rope hoist  is the most frequently used tools in one field of use is also very widely, depending on the different requirements of different areas of the wire rope hoist, here to introduce you to the different areas of the classification under the wire rope hoist.
1, a wire rope hoist marine metallurgy, metallurgy working environment temperature is high, the use of a normal CD rope  lever hoist  operation not allowed.
2, dust-laden gas explosion sites, the environmental requirements for hoist safety factor is higher, you must use explosion-proof electric hoist, the product itself has explosion-proof function, use the site to choose explosion proof electric hoist grade for three or four.
3, building small, space-constrained spaces, under normal circumstances larger ordinary electric hoist,hoist equipment hoist the overall shape is oblong, larger space, the best choice for the space first place low headroom electric hoist, this section electric hoist for the square, gourd compact, taking up less space.

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.

Climbing frame hoist the current market situation

  With the country on the micro economy turned on fortifications built slowed down the completion of all the original program names emerged early scene, while those who went the first three quarters,wire rope hoist climbing frame hoist sale rapids increased market situation has also emerged.
       Three quarters of 2011, their total sales climbing frame hoist 300 million units, an increase of 10.57%. Within the first quarter, sold 680,000 units, an increase of 42.90%; sold 890,000 units in the second quarter, down 2.29%; certainly have emerged in the third quarter,hoist and trolley the level of bounce, the cumulative sold 1.47 million units, down 10.45%.
       Climbing frame hoist which is occupied by relative market disadvantage, the market share of the enterprise skewed further to the handlebar, according to the manufacturer's main focus as well as by the level, with the crane's future has been stagnant, will gradually change the leader among the lifting career .
       After climbing frame on the front of the comprehensive market hoist, electric hoist climbing frame fortifications are being attack the market changes, the proliferation of business start climbing frame hoist care market,chain block because as the economy has been stagnant said, lifting the market will gradually recover .

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.

How to test the speed of the electric car

Electric sports car run a speed test on the track (beam) is not less than 2M together on the highlights of each given tag, when the electric sports car that is running to mark start time and run to another timing mark is terminated, repeated four times, respectively for speed average.
Electric  wire rope hoist  parked in the main beam span, and gradually add to the chorus of 1.25 times the rated load, load rises from the ground 100 - 2011MM, vacant 10min, after uninstall electric sports car open to the ends of the main beam and then check whether the main beam permanent deformation. Repeat three times, allowing Xuzhu Liang 1,2 times a little deformed, 3rd main beam should not produce permanent deformation. Test will open to cross-end electric sports car, check the main beam is indeed camber.
For electric hoist gantry crane electric  load chain  should also make stops at each girder cantilever effective at both ends, and gradually loaded to 1.25 times the rated load, load rises from the ground, floating 10MIN, electric sports car after uninstall legs open to the main beam at check the main beam in the presence or absence of permanent deformation.manual hoist Repeat three times, the first and second rounds to allow mutual understanding and a little deformed, 3rd main beam shall not produce permanent deformation.

Electric wire rope hoist complex institutions

    Electric  wire rope hoist   usually have huge institutional structures and more complex, so this type of hoist hanging objects can be varied shapes, load changing, running range, wide space, the load and the working environment, the job often requires people with , exposed, the active part is large, and in direct contact with the transported person.
         Also there are many more risk factors, but also the decision of lifting injuries Cadogan, to ensure the safety rope hoist operation can be more heavy lifting, in addition to security measures should be doing, should also have a professional operator operations,hoist equipment but also through a variety of types of research projects to test various new accessories and higher technical requirements to achieve a high wire electric hoist more secure operating performance.
        Electric wire rope hoist is a kind of electric wire rope as the lifting capacity  lift hoist   lifting equipment with this after running the car as the overhead monorail cranes and electric single-beam or double beam, cantilever, gantry crane hoist as lifting heavy lifting and walking run institutions.

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.

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.

Explosion-proof electric hoist static load test in place in order to ensure safe operation and accurate product

Explosion-proof electric  wire rope hoist  on static load test conducted according to the following procedures and requirements, so as to ensure accurate and safe to use, let a few minutes for your professional first volume:

    a. first start lifting mechanism, the empty load lifting operation, and make the car run back and forth on the whole trip, this load test run should not be less than 3 times already, there should be no anomalies.
     b. across the car parked in orbit, and gradually increases the load for lifting commissioning until the rated load applied after the car on the track full stroke. Running back and forth several times, departments should no abnormal phenomenon, after removal of the load should be no track anomalies.
     c. the car parked in orbit span, no impact to lifting nominal weight of 1.25 times the load from the ground at a height of 100 ~ 200mm, suspension residence time should be less than 10min, and there should be no instability phenomenon, then removal of the load, the car open to cross-client or feet, it is checked hoist metal structure and should no cracks, weld cracking, peeling paint, and other loose affect the safety of such damage or defects.
     d. third test not more than 3 times, and the third should be no permanent deformation, measured camber of the main beam in fact, it should be greater than 0.75/1000mm.
     e. inspect hoist track stiffness, should fast car to the track span, lifting nominal weight of the load from the ground 200mm,lever hoist electric hoist and load to be stationary, the measured values ​​on which the arch, this value the fourth is the difference between the results of the static stiffness electric hoist, electric hoist static stiffness, should be in the main beam span central S/10 range measurement. Stiffness hoist promised value 1/800S (mm).
    f. Dynamic load test run
    ① dynamic load test run should be carried out at full stroke length, from the weight should be nominal weight of 1.1 times the total starting and running time of the  manual hoist  shall not be less than 1h, the agency action should be agile, stable, reliable, security protection, interlocks and limit switch action should be correct and reliable.
    ② hoist commissioning after passing the transfer procedures.

Electric wire rope hoist winch with different

Winches and  wire rope hoist  as the most commonly used light lifting, because of its ease of use, in order to maintain and many other advantages are widely used in industrial production aspects. Little difference from the appearance, perhaps from the actual use of the process found some differences. But as two different lifting machinery, they differ in what place? Here we run mode, lifting height, lifting speed, appearance and other aspects detailed level uses the difference.

First, from the point of view operation mode, wire rope electric hoist can pan around, hoist only stationary use.
Second, from the point of view to enhance the speed, the commonly used wire rope hoist lifting speed of 8M / minute, winches generally slow can reach 10M / min.
The third point of view from a lifting height, wire rope electric manual hoist  lifting height of 6 meters is usually to 12 meters, and the installation of wire rope inconvenient, will come with the installation of a series of related issues. Hoist lifting height depends on the capacity of its roll, generally in about 100 meters.
Fourth from the appearance point of view, wire rope electric hoist, small size, and steel to be used for work on the  lift hoist  slightly larger size, but can be fixed using.
Fifth from the use of point of view, wire rope electric hoist for lifting operation only, and not only for lifting hoist can also be used for towing and other operations.

Explosion-proof electric hoist electric control system Detailed

Explosion-proof electric hoist wire rope hoist  is more common but a rather special, mainly reflected in the "explosion" word, and from this we can see the word on the product's main performance, we detail below explosion-proof electric wire rope hoist is the electronic control system.


Explosion-proof hoist electric control system consists of boxes, explosion-proof button control box, explosion off the fire limiter components. Explosion-proof electrical equipment enclosure securely closed Explosion levels to meet the appropriate requirements of its internal functions and ordinary hoist electrical installations basically the same.
Explosion-proof hoist box internal electrical components are of high quality, reliability and long life of Siemens low-voltage electrical components, minimize failure due to explosion-proof electrical box out of the box number.hoist equipment In addition to the control box to run the opposite direction contactors with electrical interlocking between the outer button button control box is provided with a mechanical interlock between avoid misuse caused by short circuit happening.
Control button box with a fine wire hanging in the explosion-proof  Wire rope winch  box under the ground about 1.5m away from the high position to facilitate personnel. Reset button box with a rotary-type mushroom head type emergency stop switch, convenient in case of emergency, the motor stops running fast.
Button on the control box using the arrow mark internationally accepted symbols and safety AC 36V control voltage. Limiter off the fire-proof control box by the limiter and external guide rods.
Wire rope on the drum Fairlead Card pusher rod thereby triggering the limiter control box contact action, to cut off the electrical power lifting. By adjusting the position of the guide rod hit the block, you can set the upper and lower limit position gourd, but must ensure that when the hook reaches the lower limit rope on the drum 2 laps still left margin.

Stage electric hoist gear is worn how to do?

Stage electric  Wire rope hoist  is mainly used for stage touring other places, for lifting audiovisual, lighthouse, etc., according to today's technical staff to solve real-world experience to your Weapon occur when the stage hoist gear wear how to do?
Stage electric hoist gear on another failure mode is wear, worn tooth thinning. If the lubricating oil wear caused impurities, generally referred to abrasive wear. This wear is often the top and root of the tooth appears deep scratch Road, scraping road perpendicular to the section line and parallel to each other. Scraping road appears, oil temperature rise inside the reducer, gear transmission occurs shrill noise, then you must change the oil.

Because tooth deviation installation center distance deviation is too large, may cause the top edge of the gear teeth and the tooth root portion of the transition curve excessive compression, so that part of the tooth root fillet produce severe wear. Due to overload, tends to make the driving wheel or the driven pulley tooth tip (sometimes also be along the entire tooth surface) of a thin layer is worn away.
Stage electric lift hoist  for lifting mechanism gear reducer wear, tooth thickness of not less than 60% of the original tooth thickness, for operating agencies gear worn tooth thickness of not less than 80% of the original tooth thickness, more than the standard should be replaced with new gear . Tooth wear can be measured with a thick tooth caliper measurement of the pitch circle tooth thickness to test. Gear measuring caliper vernier caliper and depth gauge is integrated caliper for measuring tooth thickness.manual hoist Measurement, start drawing isolated tooth height, the measured vertical scale adjusted tooth caliper this height. Then, the card pin stuck teeth, tooth thickness measurements using the horizontal scale.

Electric hoist Kasheng how to do

Wire rope electric  lift hoist  is common cards are one of the problems and how to avoid the phenomenon of electric hoist Kasheng it, following your Weapon.
In response to these problems, through analysis, using a simple method to effectively solve this problem. In the inner plus welding a flange ring, so to prevent rope cards for various reasons the appeal site, without affecting the drum and motor assembly as well as the use of electric  wire rope hoist  performance. We are part of the hoist has been improved, with more than a year, the complete elimination of the rope stuck key issue. Production process, even if the phenomenon of chaos rope, because only in the Hoist equipment  between the shell and the drum, through traction, easy way to increase the load, etc., within a short time you can handle. While maintaining the life of the equipment, without affecting the normal production.
Electric hoist occur frequently in the course of winding accidents. Especially when the card is in the drum and wire rope lifting the gap between the motor, the process is the only way off the motor, remove the rope. Time-consuming and laborious, but also delay the normal production, sometimes in order to maintain production, will be cut off welding wire rope, wire rope very easy to wear off leaving the drum and the motor housing, resulting in greater equipment accidents.

Space is limited, how to choose electric chain hoist

Space is limited, how to choose Wire rope hoist
Electric hoist specifications varied field of use has become more widespread, lifting lack some of the space is extremely narrow spaces, then encounter space-constrained spaces, how to choose electric chain hoist, the following details for you.

Low headroom chain hoist, also known as low-type electric chain hoist is designed for limited space dimensions designed electric  manual hoist   low-type electric chain hoist with hook greatly shortened the distance between the beams, with low headroom dimensions. Low-type electric chain hoist to the smallest hook spacing 450mm, 500mm and above are general.
Low-type electric chain hoist with stamping steel shell, beautiful appearance. Low-type electric chain hoist gear after high temperature quenching, toughness strength, have variable gear box, you can refuel, protect the gear. Low-type electric  wire rope winch  chain and by the use of low-carbon steel black handle, increasing the wear resistance of the chain, extended service life. Low-type electric chain hoist with electronic limit switches to prevent over-tightening the chain. Low-type electric chain hoists are widely used in the lower buildings, factories and other places, expanding the effective lifting space.

Under what circumstances the use of electric chain hoist drive

Commonly called electric  lift hoist  motors tapered general use, because the motor is designed for lifting equipment design, it has a simple structure, high reliability, and low failure rate. Generally should not use the drive, since all need to start the drive acceleration time, acceleration voltage is slowly rising, the moment can not make the shift release conical rotor brake, easy to cause the inverter overload protection.Wire rope hoist The so-called electromagnetic induction brake motors can use the drive, but the drive portion of the brake solenoid output tap, start and stop the drive to keep pace.

Therefore, according to the above description, we believe that the choice of the motor directly determines the frequency of use

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.

Electric hoist gears numerous scholarship

Electric  lift hoist  gear is a very important accessory, it affects the gear engagement between the various components and thus the entire device associated with, do not look small electric hoist gear volume not much, but it contains a large number of missing knowledge, its level, material and the teeth are related to the life of electric hoist, the following details for you:
1, the electric Wire rope hoist  for the general working machine, the speed is not high, you can choose seven precision.
2, the gear material selection, in general, small gear: 40Cr, quenching, HBS1 = 330 contact fatigue strength limit: MPaH10001lim = σ bending fatigue strength limit: MPaFE7201 = σ gear: 40Cr, quenching, HBS2 = 260 contact fatigue strength limit: MPaH8202lim = σ bending fatigue strength limit: MPaFE6602 = σ
3, electric hoist gear, a small number of teeth Z1 = 14, a large gear Z2 = i · Z1 = 3.93 × 14 = 55.
4, in order to improve the entire rope hoist  the smooth transmission and drive strength, suggested the use of helical gears.
Accessories with small but it affects the whole, but also to remind the majority of new and old customers to buy electric hoists and other equipment must not neglect the inspection of small parts.

Electric hoist motor brake cone how to debug

Electric rope hoist  before use, after power should first start the motor, check whether the brake cone normally open, is functioning properly. In case of no rotation, which are not normal circumstances, they must immediately cut off the power to carry out commissioning work, the following details for you.
Electric  lift hoist  rated load when the decline in excessive and must be adjusted. At this point voltage may be lower than the rated voltage of 15%  may be due to moisture, rust and other reasons, leaving open cone brakes. Conical rotor motor shaft axial runout is generally 1-1.5mm, the best braking effect, electric cone brake adjustment using the lock nut counterclockwise or clockwise, reduce or increase the rotation lock nut axial movement, each rotating 1/3 laps, axial movement of the corresponding adjustment value 0.5mm.
Specific adjustment method is as follows, remove the tail cover, remove the screws properly tightened until it stops, the fan brake wheel tapered cone close the rear cover, and then the lock nut counter-rotating 2/3 of the circle, Replace the screw to basically ensure that the motor shaft axial runout is generally 1-1.5mm.
The sale of electric Wire rope hoist  factory undergo commissioning, brake adjustment to the minimum axial movement, about 1-1.5mm, axial movement with brake wear increases, if their value is greater than 3mm or when braking down over a distance V l / 100mm up, V promoted the lifting speed, should be timely adjusted, otherwise it will seriously affect the braking effect.