Crane trolley and hoist trolley What is the difference

General double beam crane trolley are made motor, reducer, brakes, drum, wire rope, hook, overload limiter and stroke limiter to form a lifting system, electric hoist sucked these electric riding pallet jack integrated power system together. In fact, the principle is still the same machine, the main difference is that the former are generally self-erecting crane manufacturer of the latter being outsourced. The former give buyers the right to choose the manufacturer and the latter more generally have only a fixed number of models to choose from. Another is the difference counter balance stackers between the car run institutions, this is not to say clearly, is the difference between structural parts.

How explosion proof electric hoist

Explosion-proof electric wire rope hoist  electric hoist is more common but a rather special, mainly reflected in the "explosion" word, and from this we can see the word on the product's main performance, we described in detail below is proof electric hoist electric control system.

Explosion-proof electric hoist electric control system consists of explosion-proof hoist boxes, explosion-proof button control box, explosion off the fire limiter components. Explosion-proof electrical equipment enclosure closed securely  Explosion levels to meet the appropriate requirements of its internal functions and ordinary hoist electrical installations basically the same. Explosion-proof hoist box internal electrical components are of high quality, reliability and long life of Siemens low-voltage electrical components to minimize the explosion due to an electrical fault caused the number of boxes out of the box.manual hoist In addition to the control box to run the opposite direction contactors with electrical interlocking between the outer  button button control box is also provided with a mechanical interlock between avoid misuse caused by short circuit happening. Control button box with a fine wire hanging in the explosion-proof hoist box about 1.5m from the ground under high position in order to facilitate personnel. Reset button box with a rotary-type mushroom head type emergency stop switch in case of emergency to facilitate fast the motor is stopped. Button on the control box using the arrow mark internationally accepted symbols and safety AC 36V control voltage. Limiter off the fire-proof control box by the limiter and external guide rods. Wire rope on the drum Fairlead card board push rod limiter control box and then trigger action to cut off contacts Lifting motor power.hoist and trolley By adjusting the position of the guide rod can be set to hit the block hoist upper and lower limit position but must ensure that the hook reaches the lower limit bit  wire rope on the drum 2 laps still left margin (excluding the rope under pressure lap ).

How to Install group hanging electric hoist?

Group hanging electric hoist can be used alone or with multiple synchronous lifting,hoist equipment use the control cabinet unified control, mainly due to the large oil tank welding in areas such as the following for you to explain, group hanging electric hoist how to install?

The first step is to open the container. Before installing the test machine, connect a wire rope drum wrapped in paper tape opened, scored before the test machine, test machine if you hurry, you may cause damaged rope rewind and stop frame. After this step, we need to note is to avoid direct contact with the wire rope and stop frame, otherwise easily lead limit switch failure, causing mini electric hoist is not working properly. The third step is to use the group hanging electric hoist when the body can not move or rotate along the mounting rod.
Then, to observe it, the work group hanging electric hoist the standard single-phase power supply is not running account,wire rope winch and you must use an outlet with a ground wire. If the state does not drop in electric hoist, electric hoist drum is coated with red paint in the last three laps rope can not be released. If continue down switch, wire rope on the rope drum will be rewound to make electric hoist operation upside down on the open, so that the limit switch will lose effect.
Finally look precautions, such as not to allow group hanging electric  lift hoist  to be exposed to rain or soaked in water, make sure that all cables hanging electric hoist with the group on rotating or hot parts to maintain an appropriate distance.

Electric chain hoist cycles common sense protection

Any product has a protective cycle, electric hoist is no exception, if you can master the hoist protection period, hoist and trolley it will bring you great benefits, eliminating unnecessary overhead electric chain hoist purchase.
1 electric hoist in the design protection period, the surface does not exceed the ISO4628-3 rust rust grades in Ri3 level (equivalent to ASTMD610 of six or European standards Re3 grade)
2, A3.08, A3.11, A4.14, A4.15, etc. are ISO12944-5.
3, electric hoist the main consideration gloss finish selection and color retention, 4 files, PU412 aromatic polyurethane topcoat, PU413 aliphatic polyurethane topcoat, PU421 polyurethane topcoat electric hoist machinery, PU420 polyurethane engineering automotive finish.
4, no zinc primer (EPMisc.) consideration was mainly rust resistance and high solids, one can achieve a dry film thickness of 80 microns, optional epoxy zinc phosphate primer,wire rope winch epoxy bottom aluminum tripolyphosphate paint.
5, zinc-rich primer required dry film (or non-volatile parts of) zinc content (not the metal zinc content) ≥ 80%. Such as the use of the level GB_T_6890-2000 zinc (metallic zinc content ≥ 96%), the dry film can be converted into (or non-volatile parts of) zinc content (not the metal zinc content) ≥ 76.80%. Can also be taken as inorganic zinc (zinc silicate) primer.
6, the most commonly used in the paint is epoxy painted iron, because iron thin cloud is not high,manual block such as requiring a good surface appearance, good fineness can be replaced by an epoxy.

Electric chain hoist prices of different factors

With economic development, all kinds of raw material prices continue to rise, affecting electric  chain block  for the price factor is also increasing, which leads to hoist prices continue to emerge in recent years, large or small growth. Then the impact of electric chain hoist prices which different factors, the following details for you:
1 electric hoist production materials rose, with the international market in which steel prices continue to rise, led directly to the electric chain hoist production materials rose, thereby causing electric chain hoist price increase.
2, the continuous upgrading of production equipment, the development of technology, new products, new technologies, in order not to fall by the times, and constantly improve their own strength, and make great efforts to participate in the new electric  manual hoist  in the development and production of which, thereby increasing the cost of production inputs, which is electric chain hoist prices is an important factor.
3, the continuous service quality win customers for products and manufacturers have become increasingly demanding, how to be able to seize the customer psychology and win market demand, high-quality after-sales service is essential, and the improvement of quality of service , but also directly affects the various expenditure increases, tolls, which will increase the cost of maintenance.
4, continued intense competition in the market, because the market in which electric  lift hoist  manufacturers continue to increase, the quality and price to win market demand, to a certain extent, also the electric hoist shown a significant increase in prices.

Electric hoist control box working conditions

Electric  rope hoist  in the control box by the cabinet, contactors, transformers and other components, according to user requests for different lengths of multi-conductor cables and flashlight door, each control box is equipped with electrical schematics, wiring terminals are consistent with the schematic clear numbers, user maintenance, wiring. The following detailed description of your electric hoist control box working conditions.

1 control box use less than altitude does not exceed 2,500 meters,
(2) the ambient air temperature is between -20 ℃ ~ +40 ℃.
3 air humidity of 90%,chain block while the monthly average minimum temperature is 25 ℃, and taking into account temperature changes on the surface of the product Cream;
4 workplaces should have no violent shaking and vibrations;
5 In the absence of explosive medium, the medium does not corrode metal and damage the insulation of gas and dust (including conductive dust);
6 In the absence of rain and snow (rain,load chain except the control box).

Humid environment for the special requirements of the hoist

Under normal circumstances hoist Working environment humidity less than 85%, electric hoist protection class IP44,manual block but with the humidity required to adapt more and more occasions, for more than 85% in the wet conditions, the hoist to some special requirements.

In nuclear power plants, nuclear equipment and other high-pressure water washing areas are at 100% humidity,wire rope winch which requires the hoist protection must be increased, therefore, the humidity is greater than 85% to 100% of the use of the environment, the hoist motor and electrical protection class shall be IP55. Besides in a humid environment, the motor should be taken for more than 10kw additional preheating drying device before use.hoist equipment If operating in the open, the hoist should be created on the electrical motor hard rain cover.