Construction crane safety hoist and trolley and management regulations

In order to strengthen safety supervision and management of construction crane to prevent and reduce production safety accidents , protect people's lives and property , according to the "Construction chainb lock Management Regulations ", " Regulations on Safety Supervision of Special Equipment ", " safe production licensing regulations , " the enactment of this provision .
The second construction crane rental , installation, removal, use and supervision and management, application of this provision .
The term construction crane , is the inclusion of special hoist equipment catalog , housing construction sites and municipal engineering site installation, removal, lifting machinery used .
Article building department of the State Council of the National construction crane rental , installation, removal, use of supervision and management.
Local people's governments above the county building department for building the administrative area of lifting machinery leasing, installation, removal, use of supervision and management.
Article rental unit construction crane rental and use of the unit purchase , lease, construction crane used should have special equipment manufacturing license , product certification , manufacturing supervision and inspection certificate.
Article rental units before construction crane rental for the first time , since the purchase of used construction crane construction crane in front of the unit is first installed , it should be held construction crane special equipment manufacturing license , product certification and manufacturing oversight inspection certificate to commercial registration of the unit above the county level people's government building department filing .
Article rental unit shall construction crane lease contract signed , clearly leasing security responsibilities of both parties, and issue a construction crane special equipment manufacturing license , product certification , manufacturing supervision and inspection certificate , proof of registration and self-test compliance certification , submit installation manual .
Article 7 of the following circumstances construction crane , not rent, use

The role of lever hoist

Lever hoist is safe and reliable, durable; Good manual hoist, convenient maintenance; Small volume, light weight, easy to carry; Small hand force, high efficiency; Progress predecessors structure, beautiful appearance, etc. With regulation model, specification of the wire rope hoist firmly down. Wire rope hand gourd, general for metal material synthesis, so in terms of maintenance must be done comprehensively, so that can not hoist equipment the equipment normal use. Usually with brake squirrel-cage conical rotor motor with electromagnetic brake (or another cylindrical rotor motor) drive, the weight average of 0.1 ~ 80 tons, lifting height is 3 ~ 30 meters. Electric hoist except can be used alone, but also with the manual, chain or electric car together, hanging on the roof of the building or crane beam is used.

Explosion-proof electric hoist static load test

Explosion-proof electric hoist static load test shall be carried out according to the following procedure and requirements, so as to guarantee the accuracy of the product is safe to use, we can offer the following points for your professional XianRong:
A. start lifting mechanism first, chainb lock on the empty load lifting manipulation, and to make the car run back and forth on the whole trip, the no-load test run shall not be less than in 3 times, should be no abnormal phenomenon.
B. to park your car in the rail across, gradually add load lifting test run, until to the rated load, make the car full stroke in orbit. Run back and forth several times, each department should be no abnormal phenomenon, should be no abnormal phenomenon after unload orbit.
C. to park your car in the rail across, no impact to 1 rated lifting weight lifting. 25 times load, height is 100 ~ 200 mm hoist equipment the ground, hanging stay time should be not less than 10 min, and should be no instability phenomenon, unload and then turned on the car across the side or foot, check the electric hoist metal structure and should be no crack, which leads to welding crack, peeling paint and other safety defects such as damage or loose.
D. the third test shall not exceed 3 times, and the third time should be no permanent deformation, determination of main girder camber, actually it should be more than 0.75/1000 mm.
E. check the electric hoist the static stiffness of the track, the car should be quick to track across, hoisting load rated lifting weight, 200 mm from the ground, after being static electric hoist and load, measure arch on its value, this value with the fourth result is the difference between the static stiffness on electric hoist, electric hoist, static stiffness, should be within the scope of the main girder span central S / 10 measurement. Electric hoist the static stiffness of the promised value 1/800 s (mm).
F. the dynamic load test run
(1) the dynamic load test run should be performed in all the long trip, rated lifting weight lifting weight should be 1. 1 times, accumulative total starting and running time of electric hoist should not be less than 1 h, agencies should be agile, stable and reliable, safety protection, interlock and limit switch should be correct and reliable.
(2) the electric hoist test run after passing the transfer formalities.

Chain performance parameters of the measuring device

Chain blocks the development of the performance parameters of the measuring device when the mechanical lifting transportation machinery research institute, Beijing chainb lock sound Gu Yuan Yuan Fang hand chain hoist is a kind of enormous quantity wide manual lifting equipment. When chain ascension rated load, hand in hand on the zipper to exert certain pulling force, the force will show that the size of the chain of the machine efficiency. We developed measuring device is used to measure the hand pull in the chain, the machine efficiency and continuous motion test and development. 1. The measurement problems in the past, before hand to pull the heavy lead method is used to measure, namely to hang up the chain to be tested in the product test rig, equal to the rated lifting weight of load test on the hoist hook, and increase the height of 300 mm. Measurement will hand chain blocks a chain of fixed down side chain, on the hand chain of hoisting side plus the first measured rated hand gourd tension value of Jordan farmar (farmar location close to the measured gourd) as far as possible, at the same time combined with equal to the rated hand pull of 50% of the value of the additional weight. When you disengage the down side of the hand chain, observe side hand lifting chain on weight reduction, such as Jordan farmar in the midway stop or accelerated decline, should be appropriate to increase or decrease the rated hand pulling force value of Jordan hoist equipment, at a uniform rate until farmar can drop 200 mm effective stroke, is the weight of the weight is the hand to pull the measured value.

Lever hoist wire rope testing project

The lever hoist wire rope test project, the design of the mechanical efficiency is reflect the force transmission system quality and the manufacturing quality of a project. Lever hoist industry, this project has discussed proposed hoist equipment, measurement techniques and special test bench test method, but because of its precision is not high or testing difficulties to unity and promotion. This paper introduces a method, which can conveniently and accurately calculate the chainb lock hoist wire rope mechanical efficiency. One of the chain mechanical transmission parts. Each section by the roller chain plate, sleeve, and the shaft pin pin (chain), etc. Vice many chain transmission in drilling equipment, such as the diesel engine and car, winch drive and drive wheel, etc. Its advantage is to transfer power without sliding, under high-speed and two axis center distance can be very big. Drilling equipment used in the chain of sleeve roller chain, there are more than three row and double row row, such as mechanical upload using chain. Made of metal small ring together like a rope.

The role of the chain

Temporary anchor chain chain chart (people used to think that chain can only be used as a lifting and bundled goods, actually the role of the chain is far more than these, with the following two examples, chain blocks can be found more use. Use a: instead of sinking cart river don't call chuan chuan si row of demodex led states with lead in sichuan words ︸ factory in jiaozuo hoist equipment han shan mine shaft wind well temporary change in the process of the ground, because the ground sinking car enough, two cage rope no steady vehicles. They through the ground a temporary car, two stable rope hanging to the headgear pulley platforms, stabilizing the ground end of the rope rope head, two by two 5 t fixed on ground hit temporary anchor chain, need rope tension, adjust by hand chain hoist, this solution both production in need, and save a large amount of manpower and material resources, as shown in the attached figure shown in (a); (note here, steady rope tension adjustment, the small chain chain should be on the main chain). Use 2: eliminate the manual hoist cable head rotating force in the city always Chen hang 24 t skip process four mine shaft

In order to ensure the vulnerability including perfecting hoisting machinery parts and metal structure of security technology, lifting machinery safety device, lifting machinery safety procedures. Metallurgical industry with the crane has the characteristics of different, its safety technical measures are also different. Improve the crane safety technical parts, main parts, have the hook, rope and pulley and drum, brake, gear reducer and gear coupling, wheels, etc. Hook according to the structure is divided into forging hook and chip.

Lifting equipment is made up of improvement slot, vibration motor, vibration isolation system and the base, etc

Lifting equipment is made up of improvement slot, vibration motor, vibration isolation system and the base, etc. This series of hoist is the vibration motor as chainb lock source, on the improvement slot with two sets of the same type of the center line of the cross Angle vibration motor installation, and do the opposite direction from the synchronous rotation, vibration motor with eccentric block rotates at every instant position of the centrifugal force hoist equipment by the component along the casting direction for reciprocating motion, make the bearing on the shock absorber of whole body vibration, the material being thrown up in the improvement slot upward movement at the same time, the material fall into the trough, start being thrown up, this time can make a good contact with raw material and air, also can have the effect of thermal cooling. The elevator to the powder, block and short fibers of solid materials (except for a viscous and caked) can be vertical transmission, also can complete drying, cooling effect of the material. Open type, closed two structures. And we can special design

Chain by pulling to move the chain

Chain by pulling to move the chain, manual hoist wheel rotation, the friction slice ratchet wheel, brake pressure into one common rotation, short and long axis rotation piece of gear, the tooth axis and the spline gear. So perfectly on the spline gear lifting chain wheel drives the lifting chain, thus hoist equipment promote weight. Unilateral brake friction ratchet type, can self braking under load, ratchet in spring and ratchet gearing, under the action of the brake safety work.

Traction weights of small light lifting equipment

Also called the fairy gourd, jin does not fall, manual gourd, is a kind of simple to use, easy to carry the manual manual hoist machinery, also known as chain hoist or chain. It is suitable for small short lifting equipment and goods, the weight is generally not more than 100 t. Shell material is high quality alloy steel chain, strong wear resistance, high safety performance. Manual gourd - hoist equipment gourd refers to using human drive chain and the handle to ascend or traction weight small light lifting equipment. Can be divided into the ring chain and lever blocks, steel wire rope type two kinds.

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.

Electric wire rope hoist single multi reel

Electric wire rope  lever hoist  drum major play in lifting mechanism hoisting or hauling bodies and winding rope.
Electric hoist wire rope electric hoist drum where the number of layers can make single or multi-layered. Normally they use a single hoist drum. Single hoist drum surface is usually cut helical grooves, a rope wound in the groove, the contact area between the rope and the drum increases, the pressure reducing unit, and to prevent friction between adjacent wire, extending the life of the rope .
Spiral groove is divided into two kinds of shallow grooves and deep grooves, generally use more standard slots, only when there is the use of rope brackets dangerous only when using trench hoist drum. Single drum hoist pulley block with single spiral groove; twin pulley reel double spiral grooves symmetrically distributed.
Multilayer winding drum  manual hoist  for lifting height is large, while the electric hoist roll length and limited circumstances, such as cranes, electric hoist drum winding layers generally made smooth, and its inner rope by the outer layer extrusion wire in the winding process the friction between adjacent loops, reduce the life of the rope. Moreover, constant tension on the rope, the rope on the drum with the load torque varies layers, resulting in instability of the load torque. To improve the hoist wire rope on the drum in the released state, to improve the life of the rope,hoist equipment and there is also a spiral groove around the hoist multi-roll.

Four features of frequency electric hoist wire rope

1, can reduce the starting and stopping of the shock: wire rope winch  with a smooth operation frequency performance, which can reduce the start and stop time of the impact, especially for the installation of precision molds, etc. are not allowed vibration in the work environment.
2, can be set according to demand the lifting speed: to pay Lifting speed at 1/10 of the rated speed to be set between the rated speed, in order to select the most suitable operating speed.
3, improve work efficiency: wire rope  lift hoist  inverter under no-load, can hoisting speed at rated speed to 1.5 times the rated speed is set between, improve the operating speed under load, in order to improve work efficiency.
4, can easily set the car speed: the motor can be running through the inverter frequency control, you can easily make the motor run at low speed run, improve the accuracy of positioning operation,hoist equipment jog operation can also be carried out.

Wet work environment requirements for use of electric hoist

Under normal circumstances in wet environments hoist, requiring no more than 85% humidity, electric  wire rope hoist  protection rating of IP44, but with the use of the growing number of requests and the field, continues to improve, more and more occasions humidity more, such as nuclear power plants, as well as with high-pressure water washing dust pollution edge nuclear devices and other occasions, in this case using the electric hoist protection must be increased, therefore, electric hoist motor and electrical protection class IP55 equipment should be transported and Health, the following details for you, humid working environment hoist requirements.
First, in a wet environment, for 10kw electric hoist and trolley  should be noted that the above increase preheated drying device. Secondly, if it is in the open air hoist operations, especially on the electrical motors and other hardware should be additional rain cover to prevent rain and other factors cause the motor to burn other failures.
About electric hoist used in a wet environment is mainly required above two points,hoist equipment consult carefully before use requirements and precautions to ensure safe use.

Flip method of construction hoist floating roof tank

In recent years, electric  wire rope hoist  is used for the construction of floating roof tank gradually frequently choose to use electric hoist for floating roof tank construction, because it is its applicability, especially electric hoist flip-law in this area to better highlight its advantages.

Flip electric hoist has obvious advantages and applicability, especially for floating roof tank construction, upgrading flip method is used 10,000 m3 external floating roof tanks, floating roof tank construction requires high maintenance inconvenience, under normal circumstances selecting slow smooth gourd work.
Electric hoist flip method is more secure, stable, easy to adjust, enhance each lap siding completed just 3-5min.hoist equipment No aerial, safe and reliable construction, welding tank wall were carried out on the ground, the boss low intensity, there is no need to use heavy lifting equipment (crane). Applicability of the construction without water restrictions. Easy control panel tank geometry deformation and ensure the accuracy, thereby ensuring the panel welding quality and avoid water-filled suits and other process is not conducive to control panel (especially thin) deformation of the shortcomings. Floating roof phased production, has little effect on the tank construction, ease of cross-operation of each process and pipeline operations, electric  lever hoist  flip method to improve the efficiency of labor and equipment, machinery efficiency.

Good lubrication to extend the life of lifting equipment

Lifting equipment is closely related to the quality of life in addition to itself, the work is routine maintenance, but during maintenance lubrication but also played a vital role in lifting equipment properly lubricated regularly to not only be more convenient to use,hoist equipment it is important is that it can extend its life.
Should be established as a manufacturing lubrication management system. Duties include lubrication maintenance personnel regulations and work rules, cleaning oil system, lubricating oil and coolant test system.
Lifting equipment lubrication management of the basic principle and the "five-set, three filtering" management approach. Five Sets: Capacity, will be one, qualitative, quantitative, regularly; three filters: collar oil filter, oil filter when the drum during refueling filtering.
Check the equipment lubrication conditions, timely solutions to the lubrication system problems; lubrication equipment and replacement of damaged parts, equipment and tools; lubrication and cleaning of oil on the recording and analysis of the situation,hoist and trolley and constantly improve the lubrication maintenance work.
Actively promote the new grease lubrication equipment, new additives, new sealing materials, new wear-resistant materials, new devices, lubrication experiments and applications of new technologies, as well as to seriously study the basics of the business and methods.
Proper lubrication to reduce friction between the equipment parts, reduce power consumption,manual hoist ease wear and extend the life of lifting equipment, full performance of the device.

220 volt mini electric hoist Precautions

    220 volt mini electric hoist with most close to people's lives, especially in the agricultural sector,hoist equipment which replaces the traditional human transmission work, then at 220 V mini electric hoist when we should pay attention to what matters, in order to avoid the use of improper failure to introduce you to the following.
         1, the formal product comes with instruction manual, you read carefully before use.
         2, mini electric hoist is installed to meet the requirements, the installation in the ease of operation of the occasion.
         3, lifting not stayed, oblique lifting heavy objects,wire rope winch and this is all hoist avoid point.
         4, mini electric hoist work, forbids any person standing beneath the heavy lifting.
         5, please use wear thick gloves to avoid rope slip from the hands glide cause injury or stabbed.
         6, micro hoist and wire rope hoist is very similar to the use of this is to ensure that at least 3 on the rope drum circle wire rope,wire rope hoist wire rope to prevent excessive force detached from the rope drum.
         7, do not arbitrarily modify or welded mini electric hoist parts.
         8,220 volt mini electric hoist shall not in any way carry people.
         9, do not overload use.
         10, regular inspection hoist is firmly installed.
         11, the operator not to drinking, drug use, etc. operate the lifting equipment.

How to check before installing hoist beam

    Before installing and using electric hoist,hoist equipment the intention is very important job is to check whether the standard I-beam, in order to ensure the normal operation of electric hoist, how to check the work, the following for you to do the following description:
       Electric hoist installation, respond beam track end, straightness and twist to check method is: Level measurement track elevation, level degree, track the location of the top face of the longitudinal inclination of its design should be ≤ 1/1000. Each 2m measuring point, full height difference of not more than 10mm; rail top surface elevation tolerance ± 10mm, the same cross section relative difference in elevation between two parallel tracks should be ≤ 10mm; should be noted that: electric  lift hoist  beam track along the longitudinal direction in the horizontal plane the bend, each measuring 2m length tolerance of ± 1mm;hoist and trolley beam lateral inclination orbit track width should not exceed 1/100; orbital welding electric welding quality should meet the relevant requirements, then the head and sides welds shall be ground smooth.
       Electric hoist can be used alone and also can be used with lifting beam or driving for use.

Upside down electric chain hoist features

Upside down electric  lift hoist  is also called "stage gourd", the name of the field associated with the use of history is nothing, why the inverted chain hoist can be applied to the stage, compared with other chain hoist What characteristics do the following description:
       Upside down electric chain hoist with 110 volt control circuit heat treatment, with screw-type limit switches, stamping steel shell, lightweight and rugged; high-strength safety hook;hoist equipment chain galvanized grease in the gear box fitted to prevent oil droplets penetrate into the arena, hoist motors sealed in aluminum rims cylindrical enclosure permanently protect motors. Upside down electric chain hoist efficient, lightweight motors, non-asbestos brake system, low energy consumption; forming heat treatment of steel chain guide plate; hanging hanging there under the limit switch device,wire rope winch the motor automatically stops to prevent the chain beyond, to ensure safety; suitable for use with various controllers and circuit distributor connected.
        Note: upside down electric chain hoist for temperature -25 degrees to 40 degrees, in the absence of fire, explosion and corrosive media environment, prohibit lifting the molten metal, toxic, flammable and explosive items.

Special electric hoist use of premises

Following is a brief introduction of special electric  hoist equipment  are used in what place?
       Special electric hoist use of premises processing establishments are mainly large-scale construction, installation engineering electric chain hoist, electric chain hoist tunnel, bridge construction with large-tonnage electric chain hoist, ship repair electric chain hoist,wire rope winch Metallurgy, high-temperature environment the use of electric hoist.
       Special features are the use of special equipment, material properties and use electric chain hoist, small size, light weight, and hanging upside down and 360 ° optional lifting multiple properties. Metallurgy explosive environment using electric chain hoist with high quality material used is aluminum bronze and beryllium as the main raw material, lifting chain with 80 high-intensity lifting chain temperature, corrosion resistance is a high-strength lifting chains can be galvanized, black,hoist and trolley polishing and other processing methods, which is also called chain hoist electric hoist suitable for all types of anti-riot places.

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.