lift hoist monthly maintenance

When the lift hoist lift maintenance personnel to enter the inner workings must Diaozhu lift hoist lifts to prevent a sudden drop in casualties.
A. Check the wheel,small electric hoist intermediate shaft and bearing; cylinder pin and bearing; boom hinge shaft and bearings lubrication and wear;
B. Each of the above components filling oil. Extend bearing life.
C. Check the hydraulic oil and the oil level. Rose to the highest hydraulic lift oil above the tank bottom should be 40-50 mm.Lever hoist Hydraulic oil discoloration dark, oily sticky, or oil in gravel and other foreign matter, should be promptly replaced the hydraulic oil. Hydraulic lift system applications 32 # hydraulic oil.

Lever hoist Introduction and Features

Lever hoist is a simple to use and easy to carry the manual lifting tool. Lever hoist can be enhanced traction, fall, calibration and other operations. Weight is generally no more than 50T. Widely used in shipbuilding, electric power, transportation, construction, mining,ratchet lever hoist telecommunications and other industry equipment installation, goods lifting, pulling and other parts.
Lever hoist is to get a line to match the load lever principle of traction by means of the human hand lever handle, a clamp body rotation acts on the movement of the load, drive the load operation. can be enhanced traction, down, calibration and other operations. If you configure a special device, not only can be used for non-linear traction operation, and can easily select the appropriate operating position,Lever hoist or with a smaller tonnage machines exponentially expand its load capacity, the load can be used for larger tonnage of several machines in parallel operations.

lever hoist maintenance methods

fter 1 after use lever hoist should be cleaned and coated with anti-rust oil, stored in a dry place.
maintenance and repair should be familiar to those who hoist mechanism to prevent the performance ratchet lever hoist of the machine do not understand the principles of free disassembly.
gear installed by drawing operations.
slotted nut installation, you should first turn the hand wheel clockwise direction, the ratchet, pressed brake friction plate mounted on the seat in the groove nut.
lever hoist inspection overhaul after washing, no-load and overload tests should be carried out to confirm working,Lever hoist reliable automatic rendezvous to use. Brake friction surfaces must be kept clean, non-contaminated sewage sludge.

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.

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.

Five Easy Tips to improve efficiency in the use of electric hoist

Based on years of work and technical personnel,hoist equipment laboratory lessons learned in the course of the following hoist the tips to help you work more efficiently.
1, wire rope electric hoist in the course of special attention, the rope must be wrapped properly, a reliable guide rope rope, rope chaos.
2, buttons parking off sensitive and reliable, consistent action buttons labeled with gourds.
3, limit movement reliable, accurate,lever hoist reliable and accurate protection of electric hoist safe operation.
4, electric hoist hook part to ensure that swung flexible.
5, reducer running, lifting reducer sound normal, motor brake, reliable, flexible trolleys, electric hoist protection when normal operation and safety.
Note:hoist and trolley The use of electric hoist before trial whether empty normal operation to protect the safe use of electric hoist.

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.

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.

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.

Electric hoist limiter relevant safety technology

 Overload limiter is safe to use electric hoist one of the essential parts, played a limited role overload,manual block the following with you to understand the relevant safety limiter technology.
1, overload limiter Scope: 0.5T ~ 32T kinds of electric hoist single girder cranes;
2, the system error: less than ± 5% (F.S);
3, the sensor static strength: the strength of the sensor is 1.5 times the rated load;
4, the overload limiter operating temperature: -20 ℃ ~ +60 ℃;
5, relative humidity: 45% ~ 95%;
6, overload limiter power supply voltage: AC380V, 50HZ or according to user requirements;
7, the relay contact capacity: relay contact capacity AC380V, 2A;
8, the controller of the pressure:lever hoist to 2000V;
9, display: four LED (red) from the weight of the digital display, the decimal point is 2.
10, electric hoist overload limiter warning mode: sound alarm;
(1) Pre-alarm: When the rated lifting weight lifting weight of 90%, the issue of intermittent alarm sound (short beeps), indicating heavy weight;
(2) Ratings alarm: When the rated lifting weight lifting weight of 100%, the issue of intermittent alarm sound (long beeps), indicating heavy weight;
(3) immediate alarm:wire rope winch When the rated lifting weight lifting weight of 110%, emits a continuous alarm sound, the red indicator light, and automatically cut off the power supply contactor crane rising, indicating heavy weight;

Rotating hook prevention and avoidance measures

      In practice, the following measures can be taken to improve the stability of the hook in order to reduce the possibility of rotating the hook:
       (1) When a plurality of pulleys hook,lift hoist and boom to the extent possible with the use of a pulley on the outside by a pulley;
       (2) there are multiple hooks on the crane when possible, use larger diameter pulleys;
       (3) make use of wire rope double the number of the number of horses; conditions permit, try to use more number of horses to reduce the single-piece force;
       (4) around the wire rope wear, the top section of the crane hook pulley and not between the pulleys shifted too much to reduce the rise and fall of the hook wire rope hooks horizontal rotational force generated;
       (5) in the lifting process,lever hoist the boom top and the hook as far as possible to reduce the length of wire between, for example, using methods such as larger span;
       (6) When lifting, use slip rope hanging objects to be controlled so that, if the lifting height is relatively high, but is not required to rotate the hook in place, you can lock the hook;
       (7) when lifting the driver to have a smooth operation, landing hooks and rotary movements do not simultaneously;
       (8) Optional rope when other conditions are met in the case, try to choose "no spin" rope;
       (9) crane wire rope used for a period of time,hoist and trolley or to re-wear around the fixed end untied the rope release torque.

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.

Chain lever hoist chain maintenance how to proceed

Chain  lever hoist  chain can be improved lifting objects of different heights can adjust the length of the chain is essential for the crane, it is important to improve the extract unit operating efficiency crane crane operation to expand the range plays an important role in the ring chain lever  lift hoist  chain maintenance how to proceed, the following details for you.

1 sprocket mounted on the shaft should not skewed and swing. In the same drive sprocket assembly in two end should be in the same plane, the sprocket center distance of 0.5 meters, the tolerance chain of 1 mm center distance of 0.5 meters above, the allowable deviation of 2 mm. But not with friction sprocket side phenomenon, if two series move too prone to derailments and accelerated wear. Replacing the sprocket must be careful to check and adjust the offset.
(2) the tightness of the chain should be suitable, tight increase power consumption, bearing wear chain is too loose and easily beating off chains. The tightness of the chain: from the middle of the  load chain  lift or pressure, the two sprocket center distance of about 2% -3%.
3 or by the use of chain elongation after long, difficult to adjust, remove links to look at the situation, but must be an even number. Back through the chain link should the locking plate inserted on the outside, the opening of the lock piece to be rotated in the opposite direction towards the.
4 sprocket wear serious, it should also be replaced with new sprocket and a new chain, to ensure good engagement. Not just a single or a new replacement chain sprocket. Otherwise it will cause poor acceleration engaging new chain or a new sprocket wear. Sprocket tooth wear to a certain extent should be promptly turned over to use.
5 The old part of lifting chain with a new chain can not be mixed with, or easy to have an impact in the drive, pull off the chain.
6 Lifting chain timely to remember at work filling oil. The lubricants must enter roller and inner sleeve with the gap in order to improve working conditions in order to reduce wear and tear.

Chain lever hoist safety is how to achieve?

Chain lever hoists are widely used in mining, electricity, transportation, construction and other fields, to ensure the safety of use is the most important thing, the following details for you. Chain lever hoist safety is how to achieve?
First, the chain lever hoist selection and its advantages:
1 chain lever hoist brake with double pawl, durable, safe and reliable.
2 chain lever hoist-way ratchet handle on the design of the lifting and lowering the handle can be reciprocating operation.
3 chain lever  lift hoist  brake clutch device design, ie no load, will hit the median position, you can hand chain, no force can improve work efficiency.
4 is used to tighten the chain lever hoist on cables, lifting equipment, more suitable for high-altitude operations.
5 chain lever hoist advanced structure, beautiful appearance; maintenance is simple, durable; pulling force is small, labor efficiency; small size, light weight, easy to carry.
Second, the chain  lever hoist  maintenance methods:
1 hoist should be cleaned after use, and coated with rust-Shantou fat, stored in a dry place.
(2) Maintenance and repair should be familiar with the hoist mechanism to prevent the mechanical properties do not understand the principle of free disassembly.
3 gourd after cleaning maintenance,Hoist equipment load test should be conducted to confirm working, reliable braking can be delivered.
4 brake friction surfaces must be kept clean, brake parts should be inspected regularly to prevent accidents caused by brake failure.

Chain lever hoist pulley with the tacit understanding with the

Chain  lever hoist  is a small crane with manually operated. Commonly used for lifting and money it work. As the car pulled trapped pit, remove topple trees or other obstacles as well as the bridge position. In short, difficult to install in some other lifting tools narrow place, the use of chain lever hoist is particularly appropriate.
When using the chain hoist, hand pull, although only a few kilograms, but it can improve the number of dozens of tons of tons of heavy or pulling at noon. If used in conjunction with block and tackle, but also to enhance the weight increase exponentially.

Chain lever  lift hoist  lifting and towing it to complete the job, depending on their internal special agency. The agency consists of connecting rod and two prices, as shown in the role of the clamp when the clutch is like a tug of war rope clamp down like two hands tightly grasping the rope. When moving forward handle type back and forth, before and after the two teams will alternately grab rope clamp. Money clamped in the clamp,Wire rope winch the rear clamp to relax; stepping up the rear clamp, the front clamp to relax, so that the taut rope continuously from one end of the casing into the hole, and the air drawn from the other side. This complex lever handle, to complete the winding or hauling heavy loads.
In the absence of external force when the agency by enclosure two compression springs, through a system of levers, ropes produced in the early pressure, so as to achieve self-locking effect.

Building basket special lever hoist installation

Construction work at heights basket by HSS-16QT  lever hoist ,  SLS3.0 safety lock, steel basket and suspension mechanism four segments. The following detailed description of your special lever hoist basket on how to install.
Construction basket in the special lever Hoist equipment  prior to installation, carefully read the instructions, check the no-load continuous flip lever hoist lever forward and reverse lever in its full range of motion should be flexible, light, no obstruction phenomenon.
Check the safety lock lever when the flip is flexible and reliable.
Suspension mechanism installed as shown, the coupling screws should be tightened and reliable. With heavy rail as shown laying the bump slot should be a good bite to prevent them from loosening, counterweight not less than 1t.
Wire rope pulling manual hoist  penetration before twisting yellow insurance, and then push the loose unloading moving forward to the dead point, it directly stuck so far. The end of the guide wire from the penetration, then loose unloading levers to the original position, then push pull automatic back will loose unloading system lockup.
Security lock installation; rope through the first safety lock safety lock, and then figure can be installed, move up and down and flexible.

Wire rope pulling hoist usage rules

Wire rope hoist widely used in shipbuilding, electric power, transportation, construction, mining, telecommunications and other sectors of the equipment installation, lifting items, mechanical retraction. Wire rope pulling hoist is a lightweight simple  Hoist equipment   this manual traction machine which has a small size, light weight, compact, portable, stable performance characteristics.
        Wire rope pulling hoist works by the two pairs of smooth self-locking jaws like two steel claw clip rope as alternate as linear repetitive motion, thus completing the processing operations, and can be used on multiple occasions.  lever hoist for your brief usage rules:
(A) prior to use as a  lever hoist  comprehensive inspection and tests.
(2) When using the lever hoist, according to the marks from the weight used, from the weight must not exceed the permitted load.
(3) should always check the rope for wear and kinks, broken wires, broken stocks, which do not meet the safe use must be replaced.
(4) can not handle any longer, because the lever hoist from the weight is limited, pulling force also has a certain size, longer handle the overload will cause the lever hoist use, resulting in damage to components.
(5) The working principle of the lever hoist is the use of wire rope clamp clamped alternately, so requires the use of steel core wire rope core and not with hemp rope.
(6) after use lever hoist maintenance.