Belts for cargo tie (they are also tie-down) are the most common means for fixing transported objects on vehicles. They allow you to securely secure and properly transport cargo from point to point. By themselves, they are an elastic textile tape, with which the cargo is securely fastened, which eliminates the possibility of damage during transportation. The main consumers of such products are various freight forwarding companies on any type of transport. The production of these devices is based on weaving technology, which uses a durable polyester textile tape. The width of the tape fabric for weaving can be 25, 35, 50 millimeters, which will depend on the intended load and scope of use. There are also options where a tape with a width of 75 to 100 millimeters is used for weaving - such devices are needed for extremely massive and dimensional transportation.Usually, the maximum possible load for each product is indicated on the label attached to it. This information must be taken into account under any circumstances, otherwise there may be a break during reloading and damage to the cargo (cargo) itself.
Content
The classic tie-down strap (regardless of load capacity) consists of:
Usually, the textile base of the tape fabric is made up of polypropylene, polyester, polyamide. The width of her canvas varies from 25 to 100 millimeters, and the length - from 6 to 12 meters. In cases where the device is equipped with a ratchet mechanism, it consists of two tapes, at the end of one of them there is a fastening device. The end fitting, which may be a double hook, single hook or carabiner, may also not be present in all samples. An example is the ring screed. Typically, the fitting is located at the end of the web and with its help the device is fixed to the trunk, body or trailer.
A ratchet is a fixing device that is used to stretch the tapes and fix them in the proper position. Its design includes several metal elements:
The principle of operation of the ratchet mechanism is simple: at the beginning, the tape is installed in the gap in the middle of the ratchet, then it is stretched by shifting the position of the handle. When the ratchet opens 180 degrees, it simply pops out. Thus, the device ensures proper fastening of the web.
In turn, ratchet mechanisms can differ according to two criteria:
Depending on the features of their own design, belt ties for fixing loads can be hook or ring. The ring consists of a ratchet and a ratchet lock, which represent a tension element, and a tape web with free ends. The working length of such a product should be selected based on the task being performed. The hook consists only of a cargo tape equipped with hooks and the ratchet itself.
The ratchet mechanism (it is also a ratchet) is required to maintain the tape in a permanently taut state, which is designed to ensure the integrity of the fixed object and contribute to the safety of the surrounding workers involved in transportation. By means of ring fixation, it is possible to move small volume loads or several objects at once compactly, while the risk of breakage is eliminated. The hook-and-loop tape maintains tension by attaching it at several points at once. In this case, care must be taken that it does not come into contact with the sharp edges of the vehicle or the object being moved. Otherwise, it may cause a cut and damage to the cargo.
In our time, samples equipped with a reverse thrust mechanism that stretches the tape as it moves down have become extremely popular. The main feature of such a product is the handle, the length of which is twice as long as the handle of traditional mechanisms. With its help, the belt is given maximum tension, which, of course, gives reliability when transporting cargo.In addition, such a mechanism has a guiding auxiliary axis, which protects the tape from mechanical friction. All this makes it safe to transport goods over significant distances.
Coupling belt device with a ratchet is structurally divided into two elements: a short one - in addition to fasteners, there is a retainer for the inner surface in it, and a long one - a ratchet is mounted at its end. The very structure of the mechanism consists of the following parts:
The mechanism itself is fixed by means of brackets or rivets equipped with monolithic locks. The mount itself is rigid, and length adjustment is carried out using a movable loop located on the short part. To fix cargo with a ratchet, you should correctly select the product, while paying attention to its technical capabilities and dimensions. But such mounting options as winches are no longer used in the modern world.
Performance parameters of ratchet straps
The selection of such devices will depend on the following conditions:
Traditionally, the following fixation variations are used:
Coupling fasteners must be selected in the following sequence. First, the maximum width for one product is determined, which should not be greater than the width of the adjacent horizontal platform, over which the screed will be located. Next, you should choose the number and length of fixtures. These parameters will depend on the maximum circumference of the load to be moved. Its length also necessarily takes into account the distance to the ring or hook, and should be able to adjust the entire device in such a way that the ratchet securely fastens the cargo.
The total belt length is determined based on the following conditions:
A belt length of 3-6 meters is considered classic, but this option is more suitable for private haulers. For heavy, heavy and large-sized objects, they are used in belt bays with a length of 50 to 200 meters.
The final stage (however, the most important point) will be the selection of the device according to its maximum load. The limiting condition here may be a textile tape, the technical characteristics of which may not withstand the applied load or stretch. Modern clamping products are produced with the following tightening force values (in kilograms): 1000-2000-3500-5000-7500-10000. If we take into account the safety factor, then the minimum safety factor should be at least 2 units (and for used devices, it is twice as high).
There are three fundamental rules when working with clamping devices (the rest can be called optional):
Also, when choosing belt devices, you need to consider:
IMPORTANT! If there are more than 2 parts in the belt, then each part must have its own tag with information about its technical characteristics.
Before using the belt, it must be carefully examined for any damage. A damaged unit must not be used under any circumstances!! Common injuries include:
When transporting cargo with an uneven surface or sharp parts, you should use special pads, additional corners and other means to protect the fabric. Belt devices, on the other hand, must be attached to special clamps so that the main part of the load from the stretched tape can be distributed over the necks of the hooks.
During the use of clamping devices, it is strictly prohibited:
The main criterion for a potential buyer should be the following condition.In cases where the cost of a tightening device from one of the manufacturers is significantly lower, with equivalent declared technical parameters (working / breaking load, length of the belt itself, width of its web), then most likely the belt device is not a complete analogue in terms of its performance. This circumstance is justified by the fact that at modern manufacturing enterprises, the production technology and the cost of manufactured products do not differ much.
When choosing to buy a tie-down belt, first of all, you should pay close attention to the following points:
Additionally, before purchasing, it is necessary to weigh the belt device - the lighter it is, the less material was spent on its production, which means less possible loads that are subject to such a belt. Accordingly, its useful life will also be short.
A worthy sample from a Russian manufacturer provides proper convenience and safety during transportation. The tape is endowed with hardened characteristics and exhibits special resistance to interaction with moisture and aggressive chemicals. The locking mechanism is able to securely tighten the tape, which indicates the maximum fixation of the load. The clamping force is 250 kilograms, the total length of the belt is 2.5 meters, and the weight is 120 grams. The country of manufacture is Russia, the recommended retail price is 160 rubles.
This model is designed for the transportation of goods by road. Designed for relatively small objects that have regular geometric shapes. The strap is made from durable synthetic fibre.Double clamps are designed to provide maximum security of fastening. With its low weight (only 100 grams), it is able to easily hold a 500-kilogram load. The total length is 2.5 meters, the country of manufacture is Russia. The recommended retail price is 220 rubles.
We can say about this sample that it is the best among all budget options. The manufacturer positions this tie-down strap as a device specifically designed for transporting various types of cargo in an open trunk. The quality of the woven fabric is on the level, the fixing fasteners can easily withstand a journey of 4000 kilometers at an average speed. The maximum clamping force is determined at 250 kilograms, with a length of 4 meters. Own weight - 400 grams. The brand is from the USA. Produced in Russia under license. The recommended retail price is 280 rubles.
A good model with adjustable length. It is quite suitable for both domestic transportation and professional activities. Thanks to the ratchet mechanism, the possibilities of the model are significantly expanded. The fabric is based on textile threads made using innovative technologies, which ensures a long service life.The maximum load is 1 ton, with a length of 3 meters and a dead weight of 200 grams. The country of manufacture is Russia, the recommended market price is 310 rubles.
Despite its Asian origin and rather low cost, this sample has proven itself in practice. Fixing objects inside the trunk occurs properly and with the required degree of reliability. Although metal buckles are not made of extremely durable steel, they fulfill the task assigned to them in full - during installation, the load does not stagger, and there are no problems during transportation either. The maximum load is 2.5 tons, with a length of 2.5 meters and a weight of 160 grams. The brand is from China. May be made in Poland. The recommended price for the market is 350 rubles.
An almost universal screed option that can be used on almost all types of transport (wagon, van, river boat). With this belt, it is possible to tighten not only objects that have a solid shape, but also those that have a certain amount of softness. For example, a belt can be effectively used to transport hay bales. The product itself is extremely light weight. Withstands a clamping force of 3.5 tons, with a dead weight of 1 kilogram and a length of 8 meters. Produced exclusively in Germany.The recommended price for the market is 400 rubles.
An extremely high-quality sample, in which, in addition to the intended purpose, other aspects associated with cargo transportation are implemented. The manufacturing material itself can be easily cleaned from almost any contamination, and reliable fixation locks will provide real safety for the staff. At the same time, the belt has a sufficiently strong clamping force of 2.5 tons, with its own length of 5 meters and a weight of 1 kilogram. The manufacturer (Russia) claims an extended service life. The recommended market price is 750 rubles.
The most durable and reliable belt from a domestic manufacturer. The fasteners have a new alloy composition, which means they can withstand increased loads, while providing maximum fixation reliability. The most important quality is versatility - the belt can be used not only for transportation, but also for slinging heavy objects on construction sites. The recommended price is 870 rubles.
An excellent option, equipped with a ratchet mechanism and a convenient length adjustment handle. Suitable for any work, the fabric is sewn securely and firmly. Manufacturer - Russia, recommended price - 1000 rubles.
Unfortunately, in the Russian Federation, it is the production (and not operation!!!) of tie-down belts that is poorly regulated. This circumstance has led to the fact that the market is overflowing with low-quality and cheap goods. It is worth noting that brands that care about their image apply the European standard 12195-2 “Fixing straps made of chemical fibers - fastening and safety” in the production of belts. However, this standard in the Russian Federation is not mandatory, and the current standards for the product in question are very liberal.