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

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.

Automatic shift function of hand since the transmission

In recent years, which has the function of automatic shift hand - the one transmission (AMT), the domestic heavy commercial vehicle manual hoist boom, developing rapidly, the loading rate is rising. By drivers, however, the use of arm for gear transform mechanical manual transmission (MT), despite the challenges, but as a result of product performance has a comparative advantage is very outstanding, therefore, under the current national conditions, is chainb lock a heavy commercial vehicles of the most widely used variable speed device. In the field of heavy MT gearbox, the loading rate is the highest gear more modular MT transmission. From the point of product technical characteristics, modular MT gearbox, generally there are two kinds, one kind is times file (sectional match) combined, the other is a half (plug-in match) combined. 1.1 times the combined in terms of the structure of products, times file combined MT gearbox, is back in the main transmission series to install a second vice transmission (high and low), the main transmission gear by the increase in the number 1 times. Gear transmission ratio increased by numerical value is equal to the product of the main transmission gear ratio and auxiliary transmission ratio, number of logarithmic is less than the gear and gear. Therefore, the size of the gearbox casing is shortened, it shorten the length of the shaft, but stiffness increased, thus increasing the transmission capacity.

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.

Mechanical efficiency calculation problem

Mechanical efficiency computation chainb lock is an examination questions type, as long as the students grasp the mechanical efficiency calculation problem of the problem solving skills, accurately identified which force to do the work is useful work, which total energy is doing the work force, will be able to correct the problem solving fast. In this paper, through the analysis of the general topic, for example, and the mechanical efficiency, and the students to manual hoist and summary mechanical efficiency calculation problem of the problem solving skills. A using block and tackle, the vertical case 1 in small construction site, simple lifting equipment commonly used vertical lifting construction materials, its working principle of pulley block as shown in figure 1. One will be the total weight is 4000 G n bricks uniform to 10 m high above, takes 40 s, hoist provide pulling force F 2500 n. : (1) the useful work in the process; (2) the work and power of the force F; Analysis (3) the mechanical efficiency of pulley block. (1) work is equal to the size of the forces acting on the object and the object in the direction of the force on through distance by figure 1. The figure 1 shows that useful work is the effect on the objects of the work done. As shown in figure 2, because the object in the vertical direction to do uniform motion in a straight line, so F = G, namely there W = F, h = Gh. (2) due to mechanical tension is through the direct effect on the rope of the free end, so the work force F do is work all the time. So the power of pull force F can be used.

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.

Chain lever hoist is widely used

HSH lever hoist ring chain is widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications chainb lock such as equipment installation, lifting, part drawing, bulk, bundling, line taut and welding counterpoint, lever hoist especially in narrow workplace, field aerial work and different Angle of pull more show its manual hoist. Light chain lever hoist is a kind of small, multi-purpose manual lifting, traction machine, widely used in electric power, mining, shipbuilding, construction, transportation, post and telecommunications departments such as equipment installation, lifting, part drawing, bulk, bundling, line taut and welding counterpoint, lever hoist especially in narrow workplace, field aerial work and different Angle of pull more show its superiority. HSH - DC lever hoist subminiature, ultra-low weight, easy to carry, high operating easily, ka ca can firmly fasten. A subminiature because of its structure, light weight, etc. In the place where high operation and small operation. Light goods fastening, fixed object, calibration position. On various occasions. It can be upgraded, traction, drop, calibration etc. If a particular device, not only can be used as a non linear drawing operation, and can be very convenient to choose the appropriate operating position, or in small tonnage machinery exponentially expand its load capacity, a number of machines can be used for large tonnage load in parallel.

Condition of large hoisting equipment

Condition of large hoisting equipment, marks a national engineering machinery manufacturing ability, determine the traffic construction speed and quality. Our country really started to manufacture large chainb lock machinery lifting equipment in the 70 s, after nearly 30 years of arduous exploration, has made great development. Large hoisting equipment level of design capability, manufacturing, lifting load and the intrinsic quality, mechanical properties and the contents of science and technology, continuously leapfrog development. At present, is moving toward product seriation, variety diversification, simple operation, intelligent operation and performance of modern direction. $$in recent years, our country developed manual hoist developed large hoisting equipment, and identified by authority department has been close to or reached the current international advanced level. And initially formed the development of generation, research generation, reserve generation of production pattern. Based $$$$from scratch to lay looking back the development course we may see that the first 20 years since the founding of new China, our country because do not have the ability to create large lifting equipment, lead to transportation and engineering infrastructure used imports all large lifting equipment. $$in the next few years, our country successfully developed the 38 meters high, weight of 140 tons, the hoisting with 10 tons of port portal crane M10-25 type. Used for lifting heavy weights, traction weight and tensioning of the SuoSheng, suitable for places no power supply and liquidity operations.

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

Choose steel materials manufacturing

Choose steel materials manufacturing, chain chainb lock, the main part of the chain with 800 mpa high strength lifting chain, material generally is 20 m2, medium frequency quenching heat treatment, low wear and corrosion resistance of the chain; High strength hook, general for alloy steel material, calcined play type design ensures that the slow lifting hook to manual hoist overload; Comply with the European CE safety standards.

lifting and other materials such as wood handling operation.

Change of different auxiliary work unit can also be bulldozing, lifting and other materials such as manual hoist handling operation. In roads, especially in the construction of high-grade highway, the loader used in subgrade engineering fill dig, asphalt mixture of aggregate and cement concrete chainb lock and loading operations. And also can be a force behind the soil, ground leveling and other machinery operation traction.

How to achieve explosion proof chain hoists?

Explosion-proof  Manual hoist   and other equipment and other components are not prone to mechanical collision sparks, limits the ignition source, to prevent the explosion, explosion-proof purposes.
Proof chain hoist is a professional proof class manual lifting tool, especially suitable for explosion-proof construction work liquidity requirements and do not have other sources of power used when lifting loads occasions. Hand monorail car with proof supporting the composition of manual lifting and transport trolley, so that proof chain hoists lifting goods more flexible. The product has explosion-proof performance, security and stability, simple operation, easy maintenance.
Explosion-proof  chainb lock  principle is as follows:
Its way into mechanical spark-proof type. Most of its parts are copper alloy. Since copper is relatively low hardness, soft texture, friction and collisions have a very good compromise and difficult to strip out the tiny metal particles, while copper has good thermal conductivity, electrical conductivity, friction or impact generated when the heat is timely absorption and conduction. When the copper raw material is added a sufficient amount of composition of copper alloy with metals such as aluminum copper alloy,wire rope winch not only to maintain the characteristics of copper, but also with the part of the desired mechanical strength and hardness. So that in use the friction between the parts are not prone to mechanical sparks, hooks, chains and other parts and other equipment is not easy to produce mechanical collision sparks limiting the ignition source, to prevent explosion, explosion-proof purposes.

Chain hoists chain should have the characteristics

Is a commonly used chain hoists  Hoist equipment ,  are widely used in various occasions, because of its price and hoist a big difference, but it does not need to be electricity, so very loved by the majority of users. Chain hoists chain is made of quality alloy steel, and carbon black after treatment has greatly improved toughness, and can effectively prevent rust and can withstand more than 4 times the pull-off force, safe and reliable.  chainb lock   are used for heavy lifting or handling, loading and unloading useful. Biggest advantage is that there is no electricity in the workplace, chain hoists can play an important role. Chain hoists chain will have a direct impact on NRK gourd overall performance! Import chain hoists cast alloy steel lifting chain, lifting chain hoists lifting chain than domestically strong tensile, wear strong. And lifting chain hoists are rust after treatment, can enhance the life of chain hoists. Import chain hoists, small size, internal compact, lightweight chain, and chain hoists  manual hoist  lifting faster than domestic stability, improved domestic chain hoists discontinuity shortcomings.
1, the use of safe, reliable, and easy maintenance.
2, lighter weight, easy to carry.
3, beautiful appearance, small size.
4, the machine model, high efficiency, small closed chain tension.
5, robust design and durability.

Electric wire rope hoist gearbox how two maintenance

   Electric hoist maintenance work is essential, not only affect the next time you use the device, but also the life of the equipment a great impact on the overall maintenance of the front hoist articles we have been described in detail today to introduce you to the  rope hoist  the main parts gearbox how two maintenance?

Check the hoist gearbox oil quality meets the requirements, to meet the requirements let go hoist gear box oil,chainb lock clean inside with no impurities, and sucked out with a magnet iron, clean electric hoist gear box precipitation, does not meet the requirements should be electric hoist with gear box oil change gears shall Wu badly worn thin wounds and cracks, such as those found in one of the above should be replaced.
Electric hoist gearbox bearings shall Wu along shaft wear, radial clearance to meet the requirements, meet the requirements of sand home intact seals replacement electric hoist, electric hoist gearbox gasket around the middle rotary tooth loosening. Electric Wire rope hoist  serious damage seals, gaskets should even be replaced without loosening the fastening bolts.
Electric hoist maintenance work to do to ensure the equipment and personal safety, improve efficiency and ensure safety in production is our common goal.

Pneumatic chain hoist mechanism principle

   By a pneumatic hoist lifting, walking, the control system consists of three parts, economical and reliable, energy-saving, pollution-free, anti-riot is the most ideal lifting tools. Here is your brief pneumatic  chainb lock  mechanism works.
       Pneumatic hoist lifting mechanism including: motor, reducer image, hanging assembly, brakes, lifting chain, etc., by controlling the main valve to achieve hoist lifting heavy objects up, down, starting to reach by opening and closing the brake liter, down positioning braking.
       Walking mechanism can be manual and pneumatic trolley, pneumatic trolley wheels by the active and passive wheels, gun version composed by the master valve control motor, planetary gear drive Active Wheel walking, lifting heavy objects have to achieve horizontal movement.
       Pneumatic chain  lift hoist  for dust within the gas plant sites, to some extent, can play a role in explosion, buy pneumatic hoist before, according to the field of use to choose different levels of proof pneumatic hoist.

Domestic ultra-small chain lever hoist features

  According to the structure characteristics  lever hoist  wire rope and chain are divided into two categories, according to the material into paste and aluminum casing lever hoist, lever hoist tension, lifting, pulling three functions, it is widely applied in shipbuilding, electric power, mining, telecommunications and other sectors of the equipment installation, the current domestic ultra-small chainb lock  manual hoist can be described as the "dark horse" The following introduces you to its main features.
       Ultra-small chain lever hoist lever hoist with respect to ordinary compared to its main features are the upper and lower hook can be generic, galvanized chain part of the surface treatment, not only beautiful, but also high-strength load,  lever hoist  the handle using special materials production, feel comfortable, pulling force is small.