Board chain bucket elevator structure description:

     NE serieschain block from moving parts, drives, upper unit, the central cabinet, composed of the lower unit.
     Moving parts - there hopper and sleeve roller chain composed, NE15, NE30 single row chain, NE50-NE800 with double chain.
     Drive - using a variety of drive combo drive, (according to the user's actual needs). Equipped aircraft overhaul and railing on the drive platform.
     Minute drive left and right overhead crane china installed in two ways:
     Left mounted: feeding port face, driving means arranged on the left housing.
     Right mounted: feeding port face, driving means arranged on the right side of the cabinet.
     Upper unit - mounted track (double chain), you ambition, the discharge port is equipped with anti-rubber sheet material back.
     The middle section - the middle part of the section is equipped with rails (double chain), working to prevent the chain swing.
     Lower part of the device - press fitted tension device, NE15-NE100 take spring tensioner, NE150-NE800 falling heavy boxes take up tight.

HNE series plate chain block elevator main working parts Features:

1, the upper unit: the installation of the track (double track), to prevent the chain block swinging backstop to prevent rotation of the hopper, material resistance over the lower part of the case, the discharge port to prevent material back with rubber plate.
2, the middle section: the middle part of the section is equipped with tracks (double section) in order to prevent the chain swing work, part of the middle section is equipped with access doors for maintenance.
3, the lower part of the device: the installation of the tensioning device, HNE15 ~ HNE50 with spring tension, HNE100 ~ HNE800 using hammer tensioned box.
4, the upper and lower sprocket ZG310-570. Overall quenching, HB229-269 tooth surface hardening HRC40 ~ 48.
5, electric hoist suppliers: chain plate with 45 # HRC36 ~ 42.
a, using the plate chains have higher shear strength, fatigue strength and wear resistance, running low failure rate, long service life;
b, a lower chain speed (o.5 m / s);
c, using a large-capacity hopper and a smaller bucket pitch, low and driving power transmission capacity. Particularly adapted to enhance the limestone and cement clinker after crushing (≥NE50).

Explosion Liftech Equipment Chain Block - using rules

Liftech Equipment Chain Block Do not overload use. Do not operate with a power other than human. Before using the parts required to confirm intact, transmission parts and lifting chain oiled,electric chain block idling normal. Before checking whether lifting hook hanging down firmly. Do weights hanging at the tip of errors such operations.
Liftech Equipment Chain Block lifting chain should be hung vertically, not a wrong twist of chain link, double under hook rack chain not flip. The operator should stand on the same plane with the bracelet round hands pulled the chain to make bracelets wheel rotates clockwise, you can make the weight rise; reverse pull chain hands, noon to slowly decline.manual chain block hoist When lifting heavy objects, strictly prohibited under heavy loads to do any work or walking, in order to avoid personal injury. Liftech Equipment Chain Block in the lifting process, regardless of the weight up or down, drag chain hands, the force should be uniform gentle, do not use too much force, so as not to hand chain jumping or snap ring. When the operator is found hand-pull tension greater than normal, you should immediately stop using it.chain block Maintenance Methods: gourd should be cleaned after use and coated rust oil, stored in a dry place. Maintenance and repair should be more familiar with the hoist mechanism were carried out to prevent those who do not understand the principle of the free entry machine performance.

Equipment Chain Block maintenance methods

After use should be clean and coated with rust gourd oil, stored in a dry place to prevent rust and corrosion from moisture chain hoists.
Maintenance and repair should be more familiar with the hoist mechanism were conducted using kerosene to clean hoist parts, gear and bearing parts, plus grease lubrication,manual chain block hoist to prevent those who do not understand the principle of the free entry machine performance.
Equipment Chain Block hoist After cleaning and maintenance, load test should be carried out to confirm working, reliable braking can be delivered.
Brake friction surfaces must be kept clean.Chain block Brake parts should be regularly checked to prevent brake failure occurred since heavy fall phenomenon.
Around the sprocket chain hoists lifting roller bearings can be used in the butter has been pressed adhesion lifting sprocket mounted on the journal bearing inner ring, and then into the wall of the bearing outer ring.
Chain hoists when installing brake parts, pay attention to the ratchet and pawl claw portion engages alveolar good control of the pawl spring should be flexible and reliable equipment to get started after sprocket wheel clockwise bracelet, it will ratchet friction piece pressed the brake seat,electric chain block bracelets wheel counterclockwise rotation between the ratchet and the friction plate should be no gaps.
In order to facilitate maintenance and removal, hand chain in which a series opening chain (no welded shut).
In the refueling process and the use of chain hoists, brake friction surfaces must be kept clean and regularly check whether the braking and prevent brake failure caused by heavy since fall.

Chain hoists main parts scrapped conditions

manual hoist accessories including hooks, wall panels, sprockets, flower keying gears, so siding, sheets and other gear, chain hoists to introduce you to the following main parts scrapped conditions, such as in case of retirement should be replaced.

    1) Lifting chain
A, chain wear ring diameter than the nominal size of 10%;
B, two links from the elongation of more than 3%,wire rope winch a single link from the elongation of more than 5%;
C, cracks or other harmful defects;
2) Gear
A, tooth thickness wear more than 10% of nominal size;
B, crack;
C, broken teeth;
3) friction plate wear more than 25% of the nominal size;
4) increased wear of the chain groove size, more than 10% of nominal size;
5) between the shaft and the bearing clearance is too large,chain block more than 15% of nominal size;
6) ratchet pawl and spring severe wear or corrosion;

Bronze proof chain hoists instructions

1, the operation must be scrutinized before proof  chain Block  individual components and parts, including each link of the chain, in good time before use. In equipment shaft, gear daub amount of grease to reduce wear and improve extended equipment life.
2, are not allowed to use overload proof chain hoists.
     3, lifting chain requires vertical hanging weights. Chain link between individual shall have the wrong button.
4 Pull the zipper, the zipper direction must be in the same plane with the chain sprocket.
5, is strictly prohibited stayed  manual hoist s to prevent card chain.
6, pulling force must be smooth to avoid jumping chain or card chain. When they find driving difficulties, should promptly check the reason, not deadlift, but not allowed to add people afterburner, so pull off a chain or pin.
7, use a tripod, the tripod must maintain relative spacing, feet between applications rope ties a rope on the ground when the contact time, pay attention to prevent workers tripping.
8, lifting height shall not exceed the standard value,hoist equipment to prevent the chain pull off the pin, causing the accident.
9, lifting personnel are forbidden to do any work under heavy loads and walk around to avoid accidents resulting in personal injury.

Explosion-proof chain hoists classification

Explosion-proof electric  lift hoist  lifting equipment is not the only, and explosion-proof chain hoists, the same product in the job it is friction between the impact will not occur mechanical sparks to effectively prevent fire accidents, ensure that the national wealth and personal safety, but also machinery and mechanical maintenance of essential special tools.


Explosion-proof hoist and hoist the main difference is that ordinary proof chain hoists material is aluminum bronze and beryllium as the blank, chain hoists shell is also used in H62 copper alloy materials. Why use this information as proof chain hoists raw materials, mainly bronze alloy, aluminum bronze alloy does not occur when impact or friction sparks, it is very suitable for the manufacture of flammable, explosive, corrosive place under magnetic and safe to use. Mainly alloy containing 30% oxygen or 6.5-10% methane empty oxygen withstand 561LJ impact energy, the impact of 20 magnetic, neither of sparks and burning.
Explosion-proof grade is proof chain block s level is d Ⅱ AT2 to d Ⅱ AT4, d represents flameproof; II on behalf of Class II proof that Plant Explosion. C stands for C-level hazardous areas, that is, for the most dangerous region, T4 temperature class representatives, from T1-T6, T6 is to achieve the highest.
The force of friction parts chain hoists including chain hoists lifting round form, siding, bracelet wheel, hooks, gears, gear shafts are made ​​of aluminum bronze and bronze alloy made ​​of data, proof chain hoists can be widely applied the petroleum, petrochemical, gas stations,hoist and trolley oil depots, gas, chemical, military, power, mining, electronics, railways, and other potential fire and explosion hazard environments.

The smooth wire rope electric hoist

Wire rope lifting equipment as the main connectors, directly affects the quality of the use of equipment, at present, the domestic electric  chain block  is mainly used in glossy rope, the following details.
Smooth wire rope is usually caused by a few strands sub rope twisted around the core with a rope made ​​of crane and lifting operations are used in glossy rope round cross-section. Hemp rope core core material, asbestos core wire cores. Hemp core use most. According to the manufacturing process technology around the twist number of different bundles of wire rope can be divided into single rope around the twist, double twist around Smooth Smooth wire rope and wire rope triple twist around three categories.
Smooth double twist around the wire,lever hoist and wear resistance because of its moderate around, lifting up the dish operations are widely used. Double twist steel wire rope around the wire twisted into shares in accordance with the direction and strands twisted into rope F Shun to be divided into different rope around the smooth, glossy text wrapping around the bright wire rope and hybrid species.
        With electric hoist the increasing use of time, equipment except wearing parts, easily damaged wire rope part, to remind the majority of users, the use of electric wire rope hoist  to pay attention to the equipment before and after the inspection, if found damaged or abnormal parts, please replacement parts or contact the manufacturers to solve.

Chain hoists performance mutations cause decreased security

Chain hoists because of their small size and other simple maintenance and other advantages, the use of more extensive range of original, and because mutations chain hoists performance,lever hoist security incidents are growing decline, leading to the emergence of failures in addition to the device itself quality problems, the there are many objective reasons such as improper use of the following detailed analysis of your performance chain hoists mutations security reasons for the decline, for your reference:

1, chain hoists lifting weights over from the weight of the provisions;
2, chain hoists or oblique horizontal pull, pull too high or too low;
3, on the use of chain hoists lifting chain bend or kink is still used;
4, tossing hoists;
5, chain hoists main force component corrosion, cracks, lack of strength or significant plastic deformation;
6, rope or tie optional low base connection method is not correct, then do not tie securely;
Mutation  manual hoist  performance, safety performance reasons for the decline of the two
An opponent pull hoist performance principles, institutions are not familiar with easily removable;
2, install chain hoist brake, the installation is not reliable;
3, have not been unloaded after maintenance, overloading test that is put into use;
4, long chain hoists work load; work environment is complex, rubs increase the weight;
5, the use of chain hoists can not concentrate, resulting card chain, tripping, kink;
6, the use of the rear end routine maintenance, improper storage.
When you use a  chain Block  to remind eye rigorous inspection equipment for problems, operators work should concentrate, to observe, rational operation, after use to be more equipment to do proper maintenance to maintain a permanent chain hoists performance.

Electric hoist overload limiter works

Electric hoist overload limiter is one of important safety devices, such as weight lifting process over rated, then overload limiter will cut off the electric hoist lifting loop, the electric  chain Block  to stop heavy lifting, so as to protect operating personnel and equipment safety, the following for you to explain the working principle of overload limiter.

Overload limiter balancing hoist pulley mounted on the housing means and between the end plates, end plates electrically with one end of the housing to a positioning spindle and the stopper plate, positioning the spindle head equipped with an eccentric shaft extension bracket, balance one end of the pulley device hanging in the eccentric shaft extension bracket head, the eccentric bottom bracket with dowel pins, eccentric side of the bracket support plate, the upper loading a proximity switch, eccentric bracket overhang bracket with the eccentric shaft center positioning hole centers offset mandrel 3 mm. When lifting heavy overload, the eccentric bracket shell around the  lift hoist  side panel positioning mandrel rotates counterclockwise in to a preset distance proximity switches, proximity switches off the contactor line package lifting circuit, cutting off electric hoist lifting motor power, the electric hoist stops running, play overload limiting role in achieving the safe operation of the crane, improve the reliability and security.
Hoist overload limiter are one and split into two categories, such as the need to replace the overload limiter encounter such situations, to consider the electric hoist load, the case was Joseph wire rope electric hoist rope should also consider factors such as magnification and diameterload chain , to avoid overload limiter after the purchase can not be used without situation.

Diversification of electric hoist operation mode

According lift hoist  structure is divided into fixed and running style, no matter what form will need to run on the beam or crane work, but with the requirement to improve the device's operating environment determines the diversity of electric hoist operating mode , the following Detailed.

Electric  rope hoist  operating mode changes on: trolleys can work in large curvature track, and trolley wheels can be equipped with multi-beam models, such as the most common H-type, U type, etc., all framed car, you can in a single beam run, can also be run on dual-beam track.
Operating agencies parameter changes: lifting height increases, according to the different requirements, up to 120 meters, changing the speed of running and lifting, running speed can also be made ​​into double speed.
Changes in the structure: with multiple roping,chain block you can use the electric hoist lifting hook, the field can be used for high temperature metallurgical hoist, to solve the user due to space constraints and plant design, low headroom hoist and so on.
Hoist motor parameter changes: According to user's requirements, the motor voltage, frequency, series protection and insulation class and other new designs. Such as: voltage 220V415V440V660V, frequency 50HZ, 60HZ; protection class IP54, IP55IP56 etc.; insulation level up to class H.

Flexible wire rope electric hoist lowering

Wire rope electric  wire rope hoist  he most frequently appearing as an accessory, but scrapped wear situation is more common, the following Detailed elastic rope electric hoist lowering standards for discarding.

The rope hoist for slight damage, especially when all of the strands in a good balance of stress in the usual test methods may not be displayed clearly. However, this may cause damage to the rope strength is greatly reduced. Therefore, the discovery of subtle damage to any internal inspection should be carried out, be identified. Once found damaged, the rope should be scrapped.
In some cases, chain block the elastic rope is significantly reduced. If you continue to use, there will be security risks. Elastic rope reduction is difficult to find, the elasticity generally mainly in: rope diameter decreases; rope pitch elongation; pressed against each other due to various parts, wire and between reducing the gap between strands; strands recess appeared fine brown powder. Although not found broken wire, but obviously difficult to bend wire rope. Its diameter is reduced due to wear than simply reduced diameter due to faster. This situation will result in a rope under dynamic loading sudden rupture, it should be immediately scrapped.
Tips, whether newly purchased or wire rope hoist electric hoist is in use,wire rope winch before use, after they need to check the status of the rope, such as abnormal, should immediately stop replacement wire rope to continue using.

How to prevent overloading using chain hoists

Chain hoist overload use is more common, failures due to overloading is also more common,manual block the following shows you how to prevent overloading chain hoists, to avoid similar accidents.
Prevent overloading chain hoists can be used on the device plus overload limit device, this time, add the gourd is also called overload device against overload chain hoists. Overload prevention chain hoists main purpose is safe to use. If you pull the weight exceeds the rated load requirements chain hoists, chain hoists will be at work is stalled, not a security risk, it would not do any harm to the device.
Anti-overload  manual hoist  operation is also very simple, if already in the anti-overloading heavy chain hoist load range, this time to pull the hand chain hoists are not working, at a standstill. General anti-overloading chain hoists using the occasion is very extensive, outdoor site, high-end production workshops, warehouses, power plants and other of the anti-overloading chain hoists are used.
In order to ensure the safe use of customers, each anti-overloading  chain Block  in the factory will go through rigorous testing regulation. Meet the requirements before leaving the factory, inspection is very strict. Please the majority of customers read the instruction manual before use.

Wire rope hoist brake selection to local conditions

Wire rope hoist brake is one of the essential parts, according to the wire rope hoist selection and use of environmental products and other practical needs to choose, the following detailed description of your brakes to choose how to do local conditions.

Wire rope chain Block  brakes must first consider the type and standard specifications, such as: lifting mechanism, luffing mechanism must be set to normally closed brake, walking or turning mechanism can be used normally closed brake.
Second, consider the use of premises, such as: Brakes installed there is enough space, the choice of block, arm band brake or disc brake, space is limited value, can be used within the shoe or clamp disc brakes.
Finally consider supporting wire rope lift hoist s used in the environment, there are strict requirements for oil leakage occasion use pneumatic brakes, the ambient temperature can be used insulation demanding high level of electro-hydraulic brakes. For special occasions, should be based on need for additional brake additional features. In the low temperature environment, you can use the electro-hydraulic thrusters of the heater. Conversion process for starting and braking when there are strict requirements, the installation of the brake limit switch for opening and closing state.wire rope winch For maintenance, adjustment difficult implementation environment, the installation of brake clearance balancing device and the friction lining wear compensation device. Additional manual brake device can be opened manually in exceptional circumstances brakes.
Wire rope  lever hoist  are many types of brake parts, the choice of when to use the environment to local conditions and other factors to consider, if you choose incorrectly, can damage the host, re-appeared personal risk and property damage.

Basic characteristics of small electric hoist

Small electric hoist people also known as "hanging miniature electric  rope hoist  ," and can only be fixed with the use of non trolley travel use. Its biggest advantage is small, economical use of space, the following details of small electric hoist basic features.
Small electric hoist as a new hoists are widely used in machinery manufacturing, electronics, automotive, shipbuilding, parts assembly, and high-tech industrial zone and other modern industrial production line, assembly line, assembly, logistics, transportation and other occasions. Especially for warehouses, docks, ingredients, hanging baskets and small work space narrower space operations, can show its advantages.

Small electric hoist basic characteristics are as follows:
     With emergency stop switch and reinforced breaking limit switches, protection class IP54,lever hoist with thermal protection device;
Freedom of movement Lightweight & compact design;
When the rope touches the limit arm, automatic stop upgrading;
Static and dynamic load sharing between activities set;
Operation on 220V household power;
Hook with safety lock 360 universal connector hook pad;
Small electric hoist or fixed column, wall-mounted jib crane "best partner." Which gourd beautiful appearance, reasonable structure, easy installation, low noise, especially suitable for workshops,chain block family, warehouses, hotels, shopping malls and other decoration and handling work.

Use explosion-proof chain hoists to pay special attention to what?

Proof  chain block are manual hoist one of the more special, said proof chain hoists special is mainly reflected in the selection and workmanship, it is aluminum bronze, beryllium copper as the blank, gourd shell H62 copper alloy, gear must also be after heat treatment, in order to have wear resistance. It is this process of selection and special features it has the proof.


Proof chain hoists are mainly used in potential fire and explosion hazard environment, the job impact during product will not produce friction between mechanical sparks, can effectively prevent fire accidents, the use of the environment and the particularity of the field, so the explosion in the use of hand special attention should also pull hoist the following:
1 explosion-proof hoist shall not overload use.
2, should be recognized before using intact parts, transmission parts and lifting chain oiled, idling conditions are normal.
3, other than strictly prohibited to use human power operated.
4, before the explosion in the use of hoist required to confirm parts intact, smooth transmission of local and lifting chain good idling condition is normal.
     5, check before lifting hook can hang down firmly. Prohibited at the tip of errors such as heavy lifting operations.manual block Lifting chain should be hung vertically, without kink chain link, chain under double hook rack may overturn.
6, the operator should stand on the same plane with the bracelet wheel pulled to start the chain, making bracelets wheel rotates clockwise, you can make the weight increase; reverse pull start chains, weights can slowly descended.
7, proof chain hoists in the lifting process, regardless of rising or falling heavy objects, pulled to start the chain, the force should average flaccid, not too much force, so as not to hand chain jumping or snap ring.
8, proof  manual hoist   lifting weights in a prohibited personnel to do any work under heavy loads or walking, so as not to attack personnel accidents.

Three rope frayed Analysis

The hoist rope can be said that the most frequently used accessories, but also lifting the most widely used, but when the operation wire in contact with other objects, friction. In the mechanical, physical and chemical action, wire rope wear and other issues will continue to surface, a serious impact on the  lift hoist  and the whole machinery of operation and efficiency, the following is your analysis of the three main situations rope wear:
1, deformation wear
Due to vibration, collision damage caused by the rope hit the surface, called deformation wear, abrasion is a local phenomenon. If the surface of the wire rope drum impact by other objects, wire rope electric hoist lifting wrapped around each other to fight, or due to deflection pulley and roll center phenomena arising bite rope, wire rope will cause deformation wear. This deformation wear and deformation due to local press, the wire cross-section extending to the sides at the extrusion into a fin-shaped.chain block From outward appearances, wire width expansion, although much reduced wire cross-sectional area, but the local press at the steel surface material hardened, easily broken wire.
2, internal wear
In use, the rope pulley rolls or after exposure to the entire load of the pressure in the side of the rope, the plurality of thin wires can not be exactly the same radius of curvature. Same time as the rope bends, wire rope, steel wire inside the root will generate force and produce another slip, then contact stress between stocks and shares increases, the share between adjacent wires produce local indentation furrow. When repeated cycles stretch bending, is generated in the deep recesses of stress concentration was broken, constitute internal wear. Usually thin wire rope surface pressure and the pressure proportional to the tension of the same case, since the pressure receiving area are different, the pressure per unit area is different. Under pressure from the surface wear of view, the use of line contact wire rope advantageous than using point contact, the use of surface contact wire rope line contact than using more favorable. In addition, the degree of bending wire rope, velocity, internal wear on the rope are affected. Obviously, the selection line contact or surface contact type of rope is an effective way to reduce internal wear.
3, the external wear
In the course of wire rope and the pulley groove outer periphery, drum set, a top hook surface wear caused by the contact part of the external wear. The external worn rope diameter becomes thinner,hoist and trolley the outer peripheral surface is polished fine steel.
External wear of the rope to bear the load of the wire cross-sectional area decreases, the rope breaking load is reduced accordingly.
Wear a single week than the whole week wear worse, hook group it should be possible to make a single week of the wire to wear uniform wear all week. Entire length of the wire should be as far as possible uniform wear. Such as cranes wire rope used for the first medium-term, generally extend rope life 30% to 40%.

Fashion car transport chain hoists factory pay attention to what?

 For a lot of people are not familiar with  chain block, chain hoists as some areas called "inverted chain", the rules for the use of hoists and maintenance, in the preceding article has been introduced, today introduced hoists factory loading transportation pay attention to what?
       First, when loading hoists, chain hoists parts should pay attention to the center coincides with the center and the flatbed, not a wide, high and other phenomena occur and require experienced personnel and the equipment for loading bundles work.
       Second, large objects and dedicated flatbed fixed connection with flowers down chain with bolt and the column is fixed,manual hoist the track with flatbed shares in at No. 8 with a 2-4 wire, tied around the two loading, tied with a multi-strand wire must be twisted tight pull its weight to ensure that each filament force uniform.
       Finally, note that bundled lifting, non-bundled in bundles consumables or can not withstand forces above the mating surface of the exposed parts,manual block precision shaft protruding edges and pieces to be packaged protected against collision damage in transit or unforeseen circumstances.
       These are chain hoists in the loading need to pay attention to security matters.

How to make the monorail car for different tracks

    Push and Pull monorail car broke two kinds of Hand car to drive bracelet, hand trolley driver to push heavy lifting, walking on the beam orbit, but according to the different requirements of the I-beam or rail may be used different, how to make the monorail car for different tracks,load chain the following explanation for your reference:
         Hand monorail car's structure is dominated by the left wall and right wall, hanging axes, hand chains, rings, shaft components. Wheel rim spacing can be adjusted by I-beam track width requirements, Hand monorail car were walking around with rollers on wall, hanging around the axis through the wall, in the use of nuts. Rings hanging shaft mounted in the center. So then manual block s hanging rings formed manually run on a crane.
         Hand monorail car by hand chain is rotated through the shaft is driven through a gear wheel Hand monorail car can walk on the track. To make Hand monorail car can be applied to different track width requirements,chain block let Hand monorail car used to adjust the washer mounted on the inside or outside wall on the way to be adjusted.

Hoist the working relationship between the parts

       Since the use of electric  chain block  with increasing frequency, so it is necessary to understand each staff member and the electric hoist accessories working relationships between components. Today, for example to let wire rope hoist hoist together to understand the working relationship between the parts.
       Commonly used CD1 type electric hoist, the main structure there is gear, operating organizations, drum equipment, hook devices, couplings, flexible cable current into the device, limit switch, motor with cone rotor motors, set the power and braking power in one, meet the precision handling, sand boxes and die, machine maintenance, and other fine job requirements.
       MD1 model electric hoist is a two-speed electric hoist, the main structure there is gear, operating organizations,hoist equipment drum equipment, hook devices, couplings, slow drives, flexible cable current into the device, limit switch, industrial and mining enterprises , storage terminals and other places necessary hoist equipment.
       Electric hoist each other to contain various accessories are indispensable, such as the need to replace damaged parts original parts,wire rope winch in order to ensure the normal long-term use electric hoist.