Hoisting Machinery Plant City : technological lift hoist leaps and bounds

Taixing SCCW adhere to the road of science and technology enterprises , and constantly improve the technological content of products , out of the path of sustainable development. April 6 afternoon, Taixing SCCW workshop , construction workers are busy on a 250 tons of traffic to manual hoist electrical control systems. Company official told reporters , a large running lane in the production process , due to large amplitude , making it easy to run traffic on both sides of the deviation . Therefore, high-precision correct deviations domestic travel industry is still the problem . Taixing SCCW director Tao Dong said that this technology in the industry have emerged , but they have some problems , that they are dealing with , and error correction is not so accurate, we pass to PLC program improvement, and now this technology in our industry is already far ahead of it. After the breakthrough of this core hoist equipment , companies promoting homeopathy , in one fell swoop made ​​national arches lifting machinery production license , to become a leader in the industry. Chinese New Year is over, the country 's incoming orders , production planning soon filled the whole year . To promote the sustainable development of enterprises, in 2007 the enterprise has invested millions in cooperation with Shanghai Institute of Electronics has developed a remote control system of industrial production , the system will provide high security machinery manufacturing enterprises , durable and strong operating platform . Currently the project has entered the commissioning phase , is expected to be put into production this year .

The shortcomings of the old control mode

The shortcomings of the old control hoist crane is compact, lightweight, easy operation, low cost, wide range of USES. It with a conical rat cage motor as an ascending motor and the car running, cart is usually with squirrel cage motor drive. Hoist crane, there are some inevitable shortcomings, such as the large starting current, the braking impact big, easy create frame and the shaking and the deflection of the cargo; Point move too much, motor overheating, easy to cause broken shaft, motor, reducer and wear accidents burn out. So looking for a good starting and manual hoist control method is very meaningful. Hoist crane all faults are from cage motor control method, because it is direct starting, the starting current is rated current of the 5 ~ 7 times, reverse braking cannot overcome reducer gear clearance between the impact of. For big inertial system, the organization in the process of starting motor under maximum load and maximum torque is chainb lock proportional to the clearance between teeth and gear reducer. At present, the hoist crane often operation, with a push button switch point moving frequently, the motor easy to fever. To make up for the defects, and expand the motor capacity is often used to choose the way. Thus increase the supporting capacity of the motor, at the same time, in order to avoid the broken shaft and broken teeth, and increase the capacity of the gear reducer. From the point of the model characteristics of conventional control, old-fashioned control mode is stumping while saving money, but later use performance is poor, large energy consumption.

Wire rope effect

Overview of henan coalification coal company manual hoist crane in order to reduce the well the worker in the upper and lower labor intensity of the well on the way, in 1992 and 2002, respectively, at one level and two level, between two and three levels of each set up a length of 500 m trolley car. Aerial mancar since the equipment running well since it was put into operation, drastically reduce the labor intensity of underground staff's work. However, aerial hoist equipment short service life of wire rope has been plagued our technical problems, the longest service life of wire rope for five months, the shortest is only 45 days. The reason is caused by fatigue broken wires transfinite (" coal mine safety regulations "regulation: broken wires in one lay length reaches 25% of the total number of wire must be replaced. I mine trolley car wire rope specifications for: 6 x 19-21.5 - ZZ - 1670, namely the broken wires in one lay length to 28) must be replaced when. The value of a wire rope is 17000 yuan, need at least four small class to complete 12 employees to work hard. Frequent replacement of wire rope not only affect the normal downhole worker ChengZuoRen car, but also to spend a lot of unnecessary manpower and material resources. In order to solve this problem, we return to the operational status of vehicle equipment and comprehensive study and analysis of aerial mancar wire rope for the stress analysis and selection.

Chain lever hoist is a kind of small manual lifting machinery

Chain lever hoist is a kind of small manual lifting machinery, has a compact structure, simple operation, light and energy saving, easy to carry, etc. manual hoist with the chain, more suitable for small workplaces, and aerial work, field operation, and can be used in all kinds of Angle of traction and bundled items. So chain lever hoist is widely applied in the shipyard hull hoist equipment welding of high voltage transmission lines of electricity department joint taut, agriculture, forestry and transportation of lifting loading, fastening, vehicle traction and factories, mines, construction and other departments of equipment installation calibration, hoisting, part drawing, etc. (see photo). The shipyard hull assembly welding job, as a result of chain lever hoist, can realize rapid and accurate ship registration, not only improve the size precision of the hull and the labor productivity, and improve the quality of the surface of the hull of the ship. Chain lever. Reed easy to carry. In a narrow place high or operations and also very convenient. Its net weight only 1. 6 kg, the minimum distance between hook is 205 mm. Because of using the K (0 unique clutch device, can quickly adjust to the work required to lift. Through the research and development of K (0, chain strength to IOOONlmmZ, become the world's highest level of nickel plated chain. It is not only strong, its corrosion resistance, wear resistance is high.

Electric hoist can be used alone

Lever hoist wire rope has three big functions, lifting, tension, traction rope lever tractor specification 0.8 tons, 1.6 tons, 1.6 tons, 5.4 tons. Especially suitable for no power supply condition to use. Wire rope lever tractor when using do not overload operation, once the overload safety pin automatically cut off, please make sure safety pin and then to work after the replacement. Please in strict accordance with the instructions for operation. High work manual hoist basket dedicated lever hoist by HSS - 1.6 T lever hoist, SLS3.0 safety lock, steel hanging basket and suspension mechanism of four divisions. Conform to the compulsory standards issued by the ministry of construction design standards. JGJ59-99 "building construction safety inspection standards" GB19155-2003 "high work hanging basket Q / 12 nj - 2002" the special lever hoist construction chainb lock basket "(business standard) manual high work hanging basket by domestic and foreign advanced technology, reasonable structure, compared with other institutions of hanging basket has erection convenient, simple operation, safe and reliable, the various specifications, saving investment, high efficiency, etc. In the country is the most ideal high homework today, the most advanced and safe operating tools.

Machinery widely to many fields of national economy

Since 60 s of loader in China research and trial production after engineering and technical personnel nearly 40 years of manual hoist work, explore innovation, finally have our own technology, fine product specifications variety of loader series products. This machine is widely in many fields of national economy, promote the development of the national construction. The classification of the loader, loader shovel to dig or loading and unloading material is through the movement of the working device. Bucket rod and the rocker arm and bucket cylinder hinged, used to load and unload hoist equipment. Movable arm with frame, movable arm cylinder hinged, used to hoist bucket. The flip bucket and movable arm lifting adopts hydraulic control. Loader job working device should be able to guarantee: when turning cylinder are blocking, movable arm oil cylinder lifting or landing.

Use the winch wire rope traction harvesters or other container

Use the winch wire rope traction harvesters or other containers, running on the track or trackless homework mine transportation mode, including a rope, endless rope, monorail crane and scraperhoist equipment, etc. Have a rope haulage with winding winch, one end of the wire rope winding on the winch drum, the other end on the car, when drum rotation, traction harvesters. Lever hoist is a simple to use, easy to carry the manual lifting tool. It can be upgraded, traction, drop, calibration etc. The weight is generally not more than 50 t widely used in shipbuilding, electric power, transportation, construction, manual hoist, post and telecommunications departments such as equipment installation, lifting, pull the parts, etc.

Use the winch wire rope traction harvesters or other container

Use the winch wire rope traction harvesters or other containers, running on the track or trackless homework mine transportation mode, including a rope, endless rope, monorail crane and scraperhoist equipment, etc. Have a rope haulage with winding winch, one end of the wire rope winding on the winch drum, the other end on the car, when drum rotation, traction harvesters. Lever hoist is a simple to use, easy to carry the manual lifting tool. It can be upgraded, traction, drop, calibration etc. The weight is generally not more than 50 t widely used in shipbuilding, electric power, transportation, construction, manual hoist, post and telecommunications departments such as equipment installation, lifting, pull the parts, etc.

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 ).

Electric chain hoist prices of different factors

With economic development, all kinds of raw material prices continue to rise, affecting electric  chain block  for the price factor is also increasing, which leads to hoist prices continue to emerge in recent years, large or small growth. Then the impact of electric chain hoist prices which different factors, the following details for you:
1 electric hoist production materials rose, with the international market in which steel prices continue to rise, led directly to the electric chain hoist production materials rose, thereby causing electric chain hoist price increase.
2, the continuous upgrading of production equipment, the development of technology, new products, new technologies, in order not to fall by the times, and constantly improve their own strength, and make great efforts to participate in the new electric  manual hoist  in the development and production of which, thereby increasing the cost of production inputs, which is electric chain hoist prices is an important factor.
3, the continuous service quality win customers for products and manufacturers have become increasingly demanding, how to be able to seize the customer psychology and win market demand, high-quality after-sales service is essential, and the improvement of quality of service , but also directly affects the various expenditure increases, tolls, which will increase the cost of maintenance.
4, continued intense competition in the market, because the market in which electric  lift hoist  manufacturers continue to increase, the quality and price to win market demand, to a certain extent, also the electric hoist shown a significant increase in prices.

Electric wire rope hoist brake type

Under normal circumstances the hoist hoist brake mounted on the high speed shaft, and some brake is mounted on the low speed shaft or hoist drum, and its role is to prevent items falling off the shaft,hoist and trolley you can increase security, belonging to hoist the the mounting device is an integral part of the hoist, wire rope electric hoist in the following example, to introduce you to the type of brake.
Electric wire rope hoists are many types of brakes, the choice of a variety of factors need to be considered, because of the different use of the environment determines the electric hoist can adapt to the various components, can be used normally. If you choose incorrectly,manual hoist ranging from damage hoist machine, it caused heavy accidents.
Brake type selection, mainly based electric hoist standard requirements and the actual needs, determine the type of brake. Such as standards: hoisting mechanism, luffing mechanism must be set normally closed brake, walking or turning mechanism can be used normally closed brake.
Consider using environment and places, such as brake mounting there is enough space, the choice of block, arm band brake or disc brake,load chain space is limited value, can be used within the shoe or clamp disc brakes.

Electric chain hoist normal voltage

    Electric chain hoist is the most commonly used  hoist equipment, powered by electricity during use, the following detailed explanation of your normal use of electric chain hoist voltage, want to use your help.
         Electric chain hoist into the normal operating voltage supply voltage rated voltage and operating handle. Rated supply voltage range of AC 220 volts to 660 volts, nominal frequency, there are two,wire rope winch namely, 50 and 60Hz, electric chain hoist in use, the use of premises voltage can fluctuate slightly, but the fluctuation range should not exceed the rated 10% of the voltage.
         Electric chain hoist operating handle voltage of 24V-36V, which is the AQSIQ mandatory requirements for special lifting equipment, low voltage can effectively protect users to protect against electric shock.
         As lifting equipment and electric products,manual hoist electric hoist safety-critical use, read the instructions carefully before use and precautions.

Regulate the use of sling

Here to talk about lifting belt when used for specification:
       Before each use, should be carefully examined for the lifting belt, its edges, soft loop and end pieces are damaged,wire rope winch as well as surfaces for vertical and horizontal cuts or abrasions, and lifting with good confirmation before they can be transported without damage.
       Use lifting with lifting objects to strictly abide by lifting coefficient table for proper operation mode can not be used without centralized protection Choked lift mode, you can not tie a knot or twist of the state to fight lifting goods, and more can not tie a knot way to connect or take a long sling. To prevent heavy lifting with long hanging in the lifting process, should avoid being caught by other objects or by other impact loads,manual hoist while avoiding contact with acid and alkali chemicals, high temperature or a Mars splashes try not to use sling lifting.
       Apart from the above, or if the loading zone in acidic alkaline environment before, immediately after use with plenty of cool water. When not in use to strap on a dedicated storage place should be avoided on the fire, open flames or other heat sources near the job,lever hoist lifting belt is not long sun exposure.

Climbing frame hoist several major categories

    Climbing frame scaffolding electric  lift hoist  is a new system that originated in the late eighties, early nineties, climbing frame hoist is welded tank dedicated hoist, slow, smooth operation, is its greatest feature. Climbing frame hoist according to the different ways of classification is different, here to introduce you to the main climbing frame hoist Category:
       According to the lifting equipment scaffolding, climbing frame can be divided into the following categories:manual hoist type adhesive lifting scaffolding hoists, electric chain hoist type adhesive lifting legs on frame, l plate machine type adhesive lifting scaffolding, winch-type adhesive lifting legs on frame, hydraulic lifting scaffold attachment.
       Climbing frame is picked scaffolding, suspended scaffolding, hanging scaffold scaffolding original template system evolved come,wire rope winch is to adapt to high-rise buildings, especially high-rise building construction needs of the new scaffolding. Way by climbing scaffolding, climbing frame can be divided into the following categories: Mutual climbing adhesive lifting scaffolding, Barrel adhesive lifting scaffolding, cantilever-type adhesive lifting legs on frame, rail adhesive lifting scaffolding, guided pedestal adhesive lifting scaffolding and electric hoist composite applications and so on.

Electric hoist malfunction when used emergencies

  Electric hoist at work may suddenly stop working or there is an emergency failure,manual hoist according to the 2011 return customers do the work for common problems and solutions made ​​the following summary for your reference, we want you to use electric hoist some problems that occur when Help.
1, the weight is beyond the rated load of the hoist.
2, 6 tons prohibited under the electric  lever hoist  chain hook Flip over two lines.
3, electric hoist parts for damage
4, are not allowed irregularities electric hoist.
5, the electric hoist hoist equipment lifting heavy objects and other objects are implicated
6, are not allowed to be placed in the rain or electric hoist is particularly humid.

Electric hoist inspection and maintenance are also cycle

Product inspection and maintenance are cycle electric hoist as small light lifting equipment is no exception,lever hoist not only to maintain but also to master the correct method hoist inspection and maintenance cycles can extend its life to ensure efficiency.
      Electric hoist parts more, different techniques for the various components of the characteristics of the actual work will be maintenance, inspection cycle is divided into weeks, months, years, the specific content of each period are as follows:
      A weekly maintenance and check again:
      1) Check the nut on the brake, the opening pin, the positioning plate is complete, loose, the lever and the spring no cracks; brake is reliable braking, the brake pad to open the opening when the brake should be less than 1.0mm and the brake wheel clearance distance should be equal on both sides of each axle pin may not have stuck.
      2) safety switches and limit switches are accurate, flexible and reliable work, especially electric hoist up limit is reliable.
      3) on the drum and pulley rope wound is normal,manual hoist without off-tank, channeling, knotted, twisted and so on.
      4) Check the hoisting mechanism coupling closures fastening screw is loose, the shortage.
      5) agencies transmission is normal, no abnormal sound.
      6) Check all lubrication lubrication condition is good.
      2, the monthly inspection and maintenance, inspection and maintenance, we cover the content but also have weekly:
      1) Check the wire rope for wear, if there is broken wire and so on, check the wire rope lubrication conditions.
      2) Check the hook for cracks, wear and tear of its dangerous section does not exceed 5% of the original thickness; hook nut locking device is complete.
      3) Check the motor, reducer bolts fastening the base and individually fastened.
      4) Check the gearbox lubrication conditions, the oil level should be within the specified range, measures should be taken against oil leakage sites prevent leakage.
      5) Check the balance at the rope pulleys for wear on pulleys and pulley shaft lubrication.
      6) Check the pulley position, to see whether it flexible, without damage, cracks, particular attention to the wear of the fixed pulley shaft.
      7) Check the brake wheel, uneven surface of its work should not exceed 1.5mm, brake wheel should not have cracks, its radial runout should be less than 0.3mm.
      8) Check the coupling, which should not be on the key and keyway damage, loose.
      9) Check the size of the vehicle operating conditions, should not have gnawing rails, three fulcrum,hoist and trolley when the pendulum starts and stops and so on.
      10) on the hoist to conduct a comprehensive clean, remove dirt on it.

Stage-specific hoist use, maintenance and testing

   Stage-specific part of the  manual hoist  electric hoist in strict accordance with touring exhibitions requirements design, black surface treatment, 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 adjustable screw limit switches, higher reliability, chain galvanized, rust, grease installed in the gear box, to prevent the oil droplets penetrate into the arena.
Stage electric hoist used:
Electric hoist operating voltage and frequency are marked on the motor nameplate rated voltage on in connection stage before powering electric chain hoist definitely want to check these figures consistent with those of the supply voltage. Stage hoist hanging point should be an appropriate size to accommodate the arena of electric chain  lift hoist  hook or hooks at the top of the eye and allow it, on a modest placed in the saddle and it must be competent enough to support the crane lifting capacity at maximum power .
Stage electric hoist maintenance:
1, electric hoist initial lubrication:
Bearing Chain: refining of the entire length will need to be lubricated, including through the chain CHAIN ​​place to be determined is the contact point between the connecting rod is to be properly lubricated.
Gearbox: ambient temperature is about -10 ℃ to +50 ℃ between, you should use 220mm2 / S 40 ℃ temperature and high pressure gear oils with additives, gear oil specifications for DIN51502CLP220.
2, electric hoist objects surrounding the removal of:
Electric chain hoist will need to be hung in a place without hindrance. Suspension point should be a position that allows carrying hooks and any anticipated load for rising and falling action unhindered. Lumps must not hit bottom ground, if there is a need,hoist and trolley in the refining end of the slack adjustment CHAIN ​​stopped position.
Stage electric hoist final test:
Electric chain hoist on stage after completing the assembly, but the crane being used in normal operation, the following procedure should be performed. Isolated Power: Check all mechanical and electrical connections and connections are locked and is solid.

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.

Rotate the hook after treatment

      When rotating hook after hook wire rope kink,hoist equipment this time can no longer be landing hook, otherwise it is possible to make them a rope damaged by excessive force, may take the following approach:
       (A) in the weight lifting off the ground is not high and the machine performance permitting, you can use luffing way to put weight down, then put positive spin hook.
       (2) If the weight has been lifted high off the ground, you can only think of ways to close the surrounding buildings,load chain or other person crane hanging cage to spin positive hook.
       (3) In case of hook rotation, torque should release the rope, the specific method is: the hook into the ground wire to unlock the fixed end, in accordance with the hook rotation number m times the rope match n is the number of base k (as the case may increase or decrease), according to the wire rope strands twisted inverse direction,manual hoist turn the end of the rope release torque, then loaded on a fixed end. Will play a maximum elevation boom, hook ups and downs repeated several times to check the results, you can repeat the above steps until the hook stability.

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.