How to identify quality lifting chain?

At present there are 80,100 level lifting chain, buy  Rope hoist  ,  manual hoist  and other equipment, chain quality is essential, here tells you how to identify the lifting chain quality?

The most important is that  load chain  fastening, and most likely to occur where the phenomenon is not tight at the inclination of doors and windows, such as welding is not good, and a certain degree of strength to withstand the pressure occurs after fracture phenomena. So buy it, pay attention to whether the inclination of doors and windows are hand welded, if the manual welding, insulation and windows that can not reach the high standard anti-stress.
Lifting chain structure in different ways, its hardware accessories are also different, different ways to make doors and windows open tightness are very different, their prices are not the same. In general, if the selected hardware accessories imported brands, the price and quality is relatively higher. Of course, some brands may be somewhat less of small manufacturers in order to save cost and reduce the accessories, such as double-sided locking pieces should be, he may be changed to a single set of accessories.

How to prevent electric hoist to slip fault

Electric hoist  Hoist equipment  slip car is the most common faults, the following analytical experience for you slip on how to deal with failure, how to prevent similar failures from occurring.
Imported electric hoist
Under normal circumstances lead to slip fault main reason is that the gear unit with electric rope hoist  lifting gear motor directly connected to the fixed bearing is damaged. When the gear teeth of the two wear meshed gears connected reel occurs when two gears can not be engaged with the hoisting drum motor and brake mechanical separation, heavy under the action of gravity acceleration slip car accident.
Slip on Hoist encounter problems, first press the emergency stop button to immediately cut off the electric hoist power; take preventive measures to prevent the bearer to continue to fall; safe removal of the bearer; overhaul of equipment, troubleshooting before continuing be used.
Electric lift hoist  slip on preventive measures: The carrying capacity of the wire rope to meet to carry the load, prohibit the use of electric hoist direct bearing load; strengthen maintenance and repair.

Portable electric hoist brake wear

The so-called portable electric rope hoist , which is complete with a sports car hoist equipment, devices can be flexible about moving up and down, left and right movement is achieved by an electric sports car, but when to stop using electric hoist occurs when brake wear, extended periods may affect overall use of electric hoist, also pose a security risk for the use of the following detailed description of your mobile  lift hoist  brake wear causes.
Portable mini electric hoist
Portable electric hoist brake wear is actually design problems, slow running electric hoist is driven by a small motor gear motor gear to achieve large lifting, and hanging objects when lifting large motor brake hub will open automatically, stopping automatic locking, electric hoist slow when lifting, by the small motor to drive the big motor rolling, this time a large motor is not energized state, the brake hub is not turned on, a large motor brake locking state rolling, thus resulting in a mobile hoist brake wear.
To avoid mobile hoist brake wear and inconvenience, invented the brake pad wear warning device, which includes motor brake pads, rear cover, spring, blades, rotor, magnetic brake assembly, rotor center axis is set in said end cap pin, is provided in said blade spring, the pin and the reed to correspond to the circular path. Brake pad wear warning device which can effectively prevent the brake pads cause brake failure due to excessive wear and tear caused by the story of security risks, it may alert the user to replace the brake pads and improve the operation of portable electric  Wire rope hoist  safety factor.
Currently on the market either slow down or brake lifting brake wear phenomenon can not be avoided, and this is the future of mobile electric hoist the focus needs to be improved.

Electric hoist with low headroom trolley tacit understanding

Electric hoist with low headroom trolley with the tacit understanding is mainly used in special places, low headroom hoist  Wire rope hoist  than ordinary CD lifting height can increase 200 ~ 500mm, suitable for space-constrained areas.
Electric hoist with low headroom trolley
Low headroom electric  lift hoist  and trolley combination of the biggest advantages is compact and flexible, superior performance, can operate within a very narrow curve, not to impact or friction track, so low headroom hoist suitable for the workshop highly restricted spaces, mechanical processing industry, transfer with, warehouses and other operating sites, rated load range from 1/4 to 6 tons, matching push or hand trolley.
Low headroom hoist operation using the NF series helical gear reducer drive, electric hoist on both sides of the drive wheels through a six-rowed steel transmission torque, particularly high security, help hoist part of the installation and operation of regulation, due to the low headroom electric  rope hoist  and trolley combination can be in the narrow and low roof in the workplace, to a certain extent, but also saves the cost of construction.

Hoist safety device Details

Electric  Wire rope hoist  belong in one, can be used for ground and aerial work, widely used in construction, hoist electric hoist safety device with different components, including: safety stop devices, broken rope protection device, load limiting device, upper limit stopper, the lower limit stopper, hoists, safety gates, buffers and communication signal devices, the following detailed description of your hoist safety devices:
(1) Safety stopping device
When the elevator stops at a certain level, the sound can hoist rests on the frame body of the device. Prevent sudden breakage or wire rope hoist brake failure of the basket from falling. Safety stop device with a brake and manual, when the cage running in place, controlled by a spring or artificial move, so that the support rod extends shelf supporting frame body, which loads the burden all by supporting frame, wire rope does not force. When the cage loading 125% rated load, run to the loading and unloading of the load floor position, the stop device should be able to reliably locate the cage.
(2) broken rope protection device
Hoist load rated load, hanging off the rope or run occurs when the protective device must be reliably broken rope hoist brake put on the rail system, the maximum braking distance should not fall more than 1m, and should not cause permanent structures damage.
(3) Load limiting device
When lifting the machine load reaches 90% of the rated load, an alarm signal, hoist rated load within the load reaches 100% -110%, the  lift hoist  should be cut off the power supply.
(4) the upper limit stopper
Upper limit stopper should be installed in elevators allow elevation of the highest working position, the electric hoist overrun should not be less than 3m. When the elevator reaches the limit rise height, limiter action for that turn off the power.
(5) the lower limit stopper
Lower limit position to be capable of cushioning device in hoist met before action, hoist down to the lower limit position, the stopper should automatically cut off the power, so that the cage stopped declining.
(6) Hoist Safety Gate
Safety door interlock Opener for electrical safety door is not closed, can cause power outages, elevator does not work, but also for the mechanical chain, hoist on the runtime security doors closed automatically.
(7) Buffers
Buffers shall be installed in the frame body of the bottomless pit, when the elevator at rated load and speed requirement is applied to the buffer should be able to withstand the corresponding impact. Buffers can be used in the form of a spring or an elastic solid.
(8) means a communication signal
Signaling device is controlled by a hoist an audio device driver, the volume should enable the use of elevators on each floor clearly hear the person handling the material. When the driver can not see clearly the operator and signal commanding officer, you must install the communication device. Communication means to be a closed two-way electrical communication system, drivers and operators to each other.
Electric  rope hoist   easy installation, maintenance is also relatively simple, hoist safety device equipped, standard lifting height of 3,6,9,12 m, if you have special requirements, please explain in advance at the time of purchase in order to facilitate for you ordered.

Wire rope, chain lever hoist maintenance

Wire rope hoist hook with the fixture securely fixed, the chain was hanging heavy hook and reliably linked together, pull the knob to position cards "up", reciprocating lever handle, with the handle the reciprocating lever, weight will steadily rise. Turn the knob to sign "down" position, the reciprocating lever, heavy and smooth it with the handle pulled down, bringing the lever hoist will complete the entire operation, the following to introduce you to the wire rope and chain  lever hoist  maintenance maintenance of main content.
Chain lever hoist maintenance measures
1, lever hoist should be finished using the dust on, wipe grease and store in a dry place, avoid moisture and corrosion.
2, based on usage, cleaning parts with kerosene per year 1-2 times; gears and bearings in part, plus Huangyou Run slippery.
Wire rope pulling  lift hoist  maintenance measures
1, each job is completed, we must first wipe the loose end of the rope on the adhesion of mud, dust or grease, loosen the jaw, out of wire rope, wire rope sequence will gather around the shelves, and wipe the length of wire rope, wire rope stored in dry place to prevent corrosion.
2 year deal  lever hoist  at least four times a maintenance treatment, such as diesel cleaning parts, and calcium-based grease lubrication.
3, when the internal movement poured into the mud, cement or other dirt, use a rinse, then clean diesel; cleaning, dry calcium-based grease on the grease; finally release the jaws, wipe with a clean cotton pliers mouth of grease and moisture.
4, when the jaws wear, carrying capacity is less than 80% of rated load, replace the jaw, when wire rope diameter is reduced 10%, the rope should be replaced.

Electric hoist overload limiter works

Overload limiter is to ensure safe  lift hoist  the main unit is composed of sensors, operational amplifiers, control actuators and other components loading gauge, which combines display, control and alarm functions in one. The following detailed description of your electric hoist overload limiter works.
Electric hoist overload limiter structure
When the electric hoist lifting work, the sensor is deformed into the load weight signal, through an operational amplifier, indicating the load value. When the load reaches 90% of the rated value, the early warning signals; when the load exceeds the rated load, cut off the power source of the hoisting mechanism.
Electric hoist overload limiter connection methods: electric  rope hoist  limiter uses a four-core shielded cable, the "power" mark two lines (red and black) connected with AC 380V, power cord for the limiter, the "normally closed" (blue, yellow) marked two lines connected in series lifting contactor circuit.
Overload limiter controller installation: Depending on the controller can be installed in a door or flashlight mounted on cab can be. Electric hoist controller and sensors with a four-core shielded cable is connected, the factory has been equipped, and can be determined according to user requirements wire length, can also be configured by the user to assemble air plug this cord.
Overload limiter sensor installation: When installing the elastomer against the ropes, and then hand the platen cover the U-bolts to hold the rope, and then tighten the nut wrench to hold the rope around, it can be slightly deformed in diameter , and finally left and add a nut and tighten relax.
These are on the hoist overload limiter works, etc. If you encounter other accessories on electric Wire rope hoist  problems, please contact us.