What should I pay attention to in the use of heavy lifting straps?

As we all know, in addition to ensuring the quality of the lifting equipment itself in the hoisting process, how to standardize the use of hoisting belts has become a hot topic of discussion. Everyone knows how to use the sling, so what are the places we don't know in the use of the sling. The following Kerui machinery and equipment lifting will introduce to you the noteworthy places in the use of the lifting belt.

When working with two lifting straps, hang the two lifting straps directly on the double hooks. The lifting belt is hung in the symmetrical stress center position of the double hook respectively; When using four sling belts, every two sling straps are hung directly on the double hook, pay attention to the sling in the hook can not overlap and squeeze each other, and the sling should be symmetrical to the hook stress center. When using the lifting belt, hang the lifting belt directly into the center of the hook force, and cannot be hung on the hook tip.

The hoisting belt is not allowed to cross, twist, knot, twist, and should be connected by the correct hoisting belt special connector. When encountering goods with sharp corners and edges, sheaths, corners and other methods must be taken to protect the sling to prolong the service life of the sling. It is strictly forbidden to use slings on rough surfaces.

So that the sling is not scratched by the edges and corners and the rough surface. When using the sling belt, the flat sling cannot be evenly loaded in the width direction due to the curved part of the hook, which is affected by the inner diameter of the hook. The diameter of the hook is too small, and the combination with the webbing ring eye is not sufficient, so the correct connector should be used.

The item should not be pressed against the sling as it will cause damage to the sling, and no attempt should be made to pull the sling out from underneath to cause danger. The object should be padded to allow enough space for the sling to be taken out smoothly. To sum up, if the lifting belt is not used in a standardized manner, it will bring damage to the lifting belt and lifting equipment.

Therefore, it is necessary to standardize the use of lifting belts, and pay attention to the above-mentioned noteworthy places in the process of use, and correct those wrong lifting methods as soon as possible.

We use a lot of materials in the decoration, such as the sling is also one of the common materials, of course, for the decoration of the white may not understand the sling, so we naturally do not know how to choose, so we need to understand the sling specifications and model list. I shoot a lot of materials to be used in the decoration, such as the sling is also one of the common materials, of course, for the decoration of the white may not understand the sling, so we naturally do not know how to choose, so we need to understand the sling specifications and models, in addition to the use of the sling precautions we also have to figure out, after all, no matter how good the material, no matter how good the thing, we must understand the use.

Sling specifications and model list

At present, there are many manufacturers of domestic lifting belts, and their technical performance and specifications are roughly as follows: technical characteristics and technical standards: JB T8521 - 1997;Material:

polyester, polypropylene, nylon; Safety factor: 6 8;Elongation: 2 5 under the ultimate working force; Length :

According to customer requirements; Type: Single-layer, double-layer, four-layer.

The flat sling is made of PES by braiding and stitching. And the two ends of the hoisting can use reinforced ring eyes or metal fittings to improve the strength. The flat belt is woven by the loom at one time, and processed by different stitching methods into old rotten, divided into single layer and double layer, the standard tonnage of the flat belt can be distinguished by color, but also according to the different width, to distinguish different bearing tonnage.

In the hoisting operation, it can provide a wide and smooth bearing surface, which is particularly suitable when hoisting objects with soft surfaces, because there is no contact with metal parts, the damage caused to the surface of the hoisted object is extremely slight.

Attention should be paid to the use of lifting straps

1. Do not use damaged slings;

2. When hoisting, do not twist or twist the sling;

3. Don't let the sling tie the knot when using;

4. Avoid tearing the sewing joint part or overloading;

5. When moving the sling, do not drag the sling;

6. Avoid forcibly grabbing or causing the load of the sling;

7. Each sling must be carefully checked before use;

8. Taperene has the function of resistance to inorganic acids, but it is susceptible to damage from organic acids;

9. Fiber fiber is suitable for use in places that are most resistant to chemicals;

10. Nylon has the ability to resist strong organic acid, and is susceptible to the damage of facial acid, and the loss of strength can reach 15 when it is damp;

11. If the sling is contaminated by chemicals or used at high temperatures, you should seek reference from the first supplier.

In fact, for the selection of hoisting, we must understand the use of attention, after all, when we choose, we must not be careless, we must understand the use of attention, and at the same time do not buy models when choosing, we must choose according to the actual requirements, so as to avoid damaging the function.

Summary. The load of the lifting belt is increased when folded in half, for example, the lifting belt can withstand 100 kg and then it can withstand 200 kg.

That is true. The load of the lifting belt is increased when folded in half, for example, the lifting belt can withstand 100 kg and then it can withstand 200 kg.

Isn't that the key point? Why is the load increased?

However, it must be handled at the fold in half.

Because the sling is single at the fold of the half, it is relatively weak.

The increase in the overall cross-sectional area increases the load-bearing capacity.

If it is not treated, fold it in half several times to bear the key point, is its load still the original load?

This is possible to increase some, but it is still necessary to use it according to the use range of the lifting belt, and it cannot be overloaded.

Is the load capacity 2 times or twice the original after folding?

Do not make the lifting belt knotted, carefully bend and twist, and do not allow the lifting belt to hang the goods for too long. It is not allowed to overload the use of the sling sling, such as the use of several sling at the same time The use specifications must be the same.

It should be like that. The load capacity is still the original weight.

This is within the standard range.

A ton of sling. After folding in half, you can't peel off more than a ton of paint, which is an overload behavior and is very dangerous.

The above is the answer to your consultation, if there is no problem, evaluate it on the right side, and end the consultation in the upper right corner.

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Material: taperene, polypropylene, nylon, Dupont silk, nylon, synthetic fiber type: single layer, double layer, four layer.

Material: 100% polyester.

Strength: Flat Sling 1t-30t Round Sling 1t-300t Bandwidth: 25mm-150mm

Elastic depth: < 10% under rated load 2%-3% load under ultimate working force Identification: During use, the bearing quality can be identified by the color of the sling outer sleeve after the label on the sling is worn.

Operating temperature: -40-100 degrees Celsius.

Safety factor: 5:1 6:1 7:1 industry new standard JB production sling, product safety factor is 6 times.

Representation: Representation of the tonnage of the hoisting belt.

Generally, the international color scale is used to distinguish the tonnage, as shown in the figure, orange red is used for tonnage greater than 12000kg, and the belt body and the sign are marked with load.

4 times color sling 1t 6t for 2 layers, 8t 10t for 4 layers, 6 times color sling 1t 12t for 2 layers, 15t 50t for 4 layers. Under normal circumstances, the safety factor of 4 times the lifting belt is non-national standard, and the maximum 4 times color lifting belt produced by each company is 10t, and the 6 times color lifting belt is 50t.

This practice is not allowed for the following reasons:1. Overlapping will lead to increased friction, which will cause the lifting belt to bear overload and be easily damaged or broken.

2. The hoisting belt is easy to deform after overlapping, which affects the hoisting effect and safety.

3. If there are defects, abrasive damage, tears or other damage on the hoisting car belt, the problem will be magnified when overlapping, making it more prone to failure, which poses a threat to the safety of lifting items and even personnel.

4. The overlapping use of the lifting belt does not meet the design and use specifications of the lifting belt, which is easy to cause accidents and bring potential safety hazards to personnel and items.

According to well-known hoisting and handling professionals in Beijing, lifting and hoisting handling needs to follow certain principles, whether it is personnel or equipment. According to well-known hoisting and handling professionals in Beijing, lifting and hoisting handling needs to follow certain principles, whether it is personnel or equipment. Lifting, hoisting and handling require professional equipment, mechanical displacement, large machinery disassembly and assembly, mainly engaged in plant hoisting, large-scale equipment installation, equipment handling; foundations, roads, bridges and culverts, equipment in place, municipal bridge erection; hoisting of steel structures, signs, and units of super high-rise buildings; Prefabricated pile barge, pile driver moving, tower crane disassembly and assembly.

Plant demolition, machinery and equipment relocation; Container unpacking and packing; Presses, air conditioners, elevators, large tanks, lifting, unloading, square piles, pipe piles, coil roads in place; steel structure installation; Dismantling, safety and inspection of all overhead cranes; Large-scale grid structure hoisting as a whole; Port, wharf large loading and unloading ships and barges. Attention to lifting, hoisting, and handling.

First, the professional Beijing hoisting and hoisting handling company, the service should be very complete, engaged in mechanized and non-mechanized lifting and hoisting operations, the business scope includes high-rise hoisting, lifting and transportation, equipment transfer, equipment location, factory and mine relocation, installation and commissioning, fault repair, etc., the construction objects involve heavy equipment, large tower cranes, CNC machines, air conditioners, refrigeration units, dust removal boilers, generator sets, sculpture crafts, gantry cranes, safes, power distribution cabinets, ATMs, pianos, etc. Attention to lifting, hoisting, and handling.

2. According to a well-known lifting and hoisting company, a professional lifting and hoisting company should understand the lifting standard section and operate in strict accordance with the table. First of all, start the lifting mechanism to drop the hoisting pulley and start lifting the standard section. Then, the standard sections on the lifting are tightened with high-strength bolts, and their preload torque should not be less than.

In addition, after adding a section, the erection system should be lifted once, when lifting, the original standard section should be fixed above the open lifting pulley down, pull up the opening lifting pulley, re-fixed on the top of the previous standard section, jog the lifting mechanism, tighten the wire rope, and set up the pre-section of the lifting block firmly on the beam of the upper end of the pole ** tight wire rope. Check that it is correct, relax the hoisting rope, pull down the hoisting block on the top of the erection system, and restore it to working condition in preparation for installation. Attention to lifting, hoisting, and handling.

3. Repeat the operation of lifting the standard section to complete the installation of the tower body. The process of lifting, hoisting and handling has a certain degree of danger and requires professionals to operate, so you must find a regular company when looking for a lifting and hoisting handling company.