Electric wire rope hoist

Under normal circumstances the use of wire rope hoist is installed on more than U-shaped track.
For which this feature , we track the cable disposed in the middle, which is an upper beam . 10mm rope or liftech 1 ton chain hoist cable using vertebral round , top with a basket bolts ; slip ring is two rings linked together, there is a certain margin in order to avoid cable scratch cards. Turning the ring into two rings connected by bolts , freely rotatable ; put a cap on one end of the steering ring rope , leaving a good motor lead after rubber ring lower end of the steering cable fixed . Then a plurality of sliding rings worn on the cable end , then rubber cord fixed to the sliding ring the lower segment . Electric hoist motor front access , freely rotatable , after terminating the power supply. In the traction motor , the liftech crane series center of the steering ring , the traction cable in a straight line or a circular motion .

Mine hoisting equipment

Mine hoist lifting equipment is the leading mine equipment , and is currently the most widely used to enhance the liftech electric cable hoist mechanical , so learn the basis of this chapter is to learn the other chapters . This chapter should focus on master :
( 1 ) different types of hoist works, type , scope ;
 ( 2 ) The main components of the hoist structure, liftech cheap wire rope hoist working principle and maintenance points ;
( 3 ) calculate the braking torque calculation and selection of mine hoist .

rope hoist

Host manufacturers must be responsible for the overall safety of the equipment , ensure the integrity of wire rope hoist suppliers electronic control devices and a host of matches and protection functions , meet the safety requirements of the winder requirements . Hoist on the ground of non- explosion-proof electric control unit can not separate release safety signs , but mine explosion-proof electric hoist control products , because of its association itself is intrinsically safe systems, management should be included in safety signs , safety signs in proof hoist certificate marked name of each component of the electric control device , model mini electric hoist number , and safety signs . Need to change the proof hoist electric control device or any component which time , subject to safety standard after the National Center for organizational review and passed the test , if necessary , before the change and the record. Host optional winch manufacturer 's product safety signs .

Electric Chain Hoist Model

First, the shell: light aluminum alloy shell , lightweight and rugged, high heat , sealing the entire design suitable for use in environments with poor working conditions . Second, the reverse protection device: a special electrical installations , when the power wiring error , the control circuit can not be action.
Third, the limit switch: hanging cheap wire rope hoist heavy objects hanging root limit switch device, the motor automatically stops to prevent the chain beyond , to ensure safety.
Four , 24V/36V device : When in operation in case of leakage switch to prevent accidents.
Fifth, the next magnetic braking device: This device can be achieved when the power is cut off instant brakes.
Six , chain bags : lightweight, 1.5 ton electric chain hoists attractive , and durable.
Seven chain : imported super- heat-treated alloy steel chain FEC80
Eight hook : Forging into a model , the strength and toughness not broken, the next hook can be rotated 360 degrees with the safety tongue in order to ensure safe use.

Electric wire rope hoist

1, using a planetary gear reducer , high transmission efficiency , low noise , compact, intermediate shaft omitted, square appearance and easier mounting .
2 , lifting hook with a locking permanent magnetic lifter device to prevent accidental slippage rigging .
3 , the motor has a thermal protection device , when the motor temperature is too high , the device will automatically cut off the circuit to protect the motor is not damaged .
4 , The machine adopts cam limit , high limit accuracy.
5, high security and reliability : The machine optional load limit protection device , to avoid the adverse consequences caused by Lever Hoist overloading .

Chain block

Rail is a non- chain- lift hydraulic scissor lifts for industrial plants above the second floor , restaurant , restaurants cargo transport , as a minimum height of only 150-300mm, not the most practical excavation pit at the workplace , while no need to adjust the upper point , a variety of forms ( single column , double-column , four-poster ) , smooth action , simple and reliable, hydraulic , electrical goods transport a variety of economic and relaxed. ( Specific capacity and the number of layers increases , the size can be designed according to user requirements )
Uses: mainly used among various working layers transporting goods up and down ; inter -dimensional two-story underground parking garage and more high-rise buildings , not pit excavation sites, can not reach the top of the height requirements of the occasion , such as a small space more difficult to solve, the product of the hydraulic system settings anti-dropping , interactive chain on the lower door , the floors and electric chain hoist with trolley can be set lift buttons, multi- point control . Inter- product firm structure , carrying capacity, stable lifting , easy installation and maintenance , is economical and practical alternative to low- floor elevator ideal cargo transportation equipment. Depending on the installation environment and use requirements lifts , and choose a different optional configuration , you may get better results.
Rail is a non- chain- lift hydraulic scissor lifts for industrial plants above the second floor , restaurant , restaurants cargo plate lifting clamp , as a minimum height of only 150-300mm, not the most practical excavation pit at the workplace , while no need to adjust the upper point , a variety of forms ( single column , double-column , four-poster ) , smooth action , simple and reliable, hydraulic , electrical goods transport a variety of economic and relaxed. ( Specific capacity and the number of layers increases , the size can be designed according to user requirements )
Uses: mainly used among various working layers transporting goods up and down ; inter -dimensional two-story underground parking garage and more high-rise buildings , not pit excavation sites, can not reach the top of the height requirements of the occasion , such as a small space more difficult to solve, the product of the hydraulic system settings anti-dropping , interactive chain on the lower door , the floors and countertops can be set lift buttons, multi- point control . Inter- product firm structure , carrying capacity, stable lifting , easy installation and maintenance , is economical and practical alternative to low- floor elevator ideal cargo transportation equipment. Depending on the installation environment and use requirements lifts , and choose a different optional configuration , you may get better results.

Electric hoist single-girder gantry crane maintenance platform modification

Current situation analysis of electric hoist single-girder gantry crane is widely used in outdoor environment loading and unloading of goods. For L type electric hoist single-girder gantry Manual hoist, every time when overhauling electric hoist is one of the maintenance, to ensure the normal maintenance of electric hoist, often used when manufacturing method based on a crane gate leg erection overhaul platform, platform construction can be divided into two categories: fixed and discharge type. For fixed maintenance platform, in order to guarantee the safe operation of electric hoist Manual block process, platform edge must keep a safe distance with the electric hoist (usually not less than 5 0 0 mm), the existence of the original table arrangement distance, make the electric hoist maintenance disassembly is very difficult, to be the body stretched out when the repairman in maintenance platform, sometimes need lift car even escalator to complete the maintenance task. Hold dump maintenance platform is set up when needed to repair, can solve the stationary platform caused by the platform and electric hoist distance too far.

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.