Q: What are the features of Chevron Conveyor Belt?
A: For meeting the demands of high capacity conveying at steep angles. Designed to prevent load slippage or roll back of products while conveying. Comes with cleats that are integrally molded with top cover rubber that prevents separation from belt. Cleats also helping in achieving high abrasion resistance as well as elastic rubber compounds for desired flexibility. Can be offered in different cleat heights as well as widths depending on application requirements. Can be made available in varied finish design specifications. Following precision design standards that ensure belt has smooth run on conventional return idlers, thus needing no conveyor modification. Belting support provided allowing smooth transition from conventional flat belt to Chevron Conveyor Belts. Can be manufactured in all cover grades including abrasion resistant M24, HR, OR, FR.
Q: How is the Chevron Conveyor Belt designed?
A: Our custom chevron cleats typically range from 1/4”-2” high and are designed for incline angles from 15-35 degrees, depending on the material being conveyed. The primary function of these cleats is to prevent product rollback. Rubber chevron cleated belts can operate on traditional troughing idlers, as well as flat idlers and metal beds/pans. We strongly recommend having cleats indented from the belt edges to allow for proper skirtboard rubber placement, which directs the material toward the center of the conveyor belt. Many factory-made molded chevron belts do not provide sufficient recess to accommodate skirting, resulting in spillage and housecleaning issues, particularly at the loading areas.
We offer two basic chevron patterns, open-V and closed-V and recommend a “nested” configuration, where the edges of the pattern overlap.
The open-V pattern allows for liquid drainage through the bottom, while the closed-V provides additional carrying capacity. When either design is nested, the cleats are in constant contact with return idlers to allow for a smooth transition on the return. When a pattern is not nested, belt bouncing can occur which leads to premature cleat failure and belt tracking issues.
In addition to standard chevron cleats, we also offer U-shaped and Herringbone style cleats. U-shaped cleats are normally provided on close center distances for smaller materials as well as fines. Herringbone cleats are popular for larger and non-uniformed size material.
Q: Why use Chevron Conveyor Belt?
A: With smooth surface conveyor belts, the maximum conveying angle of inclination is approximately 20° depending on the material. Using chevron cleated belts makes steeper angles of inclinations up to 40° possible, which allows for higher lift in lesser space.
Chevron conveyor belts have rubber cleats that are integrally vulcanized with the top cover of the belt. These profiles are made with highly abrasion resistant rubber types and are offered in softer compounds (45 to 50 Shore hardness) as also 60 shore materials. The profiles are shaped in such a manner that there is no need for special idlers and these can be run on conventional conveyors. The pitch between two cleats ensures a smooth ride over return idlers.
BELT WIDTH
Depending upon the profile, chevron belts are available in widths from 600 mm to 1800 mm.
EDGES
Chevron Belts are normally supplied with cut edges. However, Belts with moulded edges can also be supplied.
PATTERNED CONVEYOR BELT
Wavy-top conveyor belts, herringbones conveyor belts, and a host of other options are available in open ends or built endless. Multi-V constructions with 1/4 inch (6 mm) height are also available.
SPECIAL PROFILE WEIGH CONVEYOR BELT
QBF manufactures special profile weigh feeder belts for use in thermal power plants and cement factories. These are highly caliberated seamless belts with side profiles and centre guides.
CUSTOM BELTS
QBF has the expertise to design a new chevron profiled design to meet your needs with it's experience in mould manufacturing and product designing.
Q: How is a traditional Chevron Conveyor Belt made?
A: Chevron profile conveyor belts are a key component on a huge variety of bulk handling equipment.
Despite the important function they fulfill, relatively little is known about them technically. As a consequence, even less is understood as to why some chevron belts are so much more efficient and less troublesome than others.
Excluding belts that have cleats fitted to them, there are essentially two types of profiled rubber conveyor belt. The most commonly used are those with chevron-patterned profiles ranging from 15mm up to 32mm in height above the belt surface. The chevrons guide and control the flow of loose materials such as sand or small size aggregates for example. The second most common type is belts with low profiles that are usually no more than 5mm.
One of the most common problems experienced by many operators affects high chevron belting because the chevron profiles can become partly detached or ripped off entirely.
With both high and low profile belts another common problem is that the profiles themselves wear down within an unacceptably short period of time. The origins of these problems are both to be found within the manufacturing processes and the rubber compounds that are used.
Because of its adaptability, most of the rubber used to make modern-day conveyor belting is synthetic. Because of the technical difficulties (and higher cost) involved in creating a synthetic rubber compound that will flow uniformly, the vast majority of chevron profile belts are effectively created using a two-stage vulcanization process. Firstly, a belt carcass consisting of layers of fabric reinforcing ply and covered by a layer of uncured rubber compound on the top and bottom surfaces are placed in a vulcanization press. At the same time, a mold plate is filled with uncured rubber and the base structure is then placed on top of the filled mold. Alternatively, the mold plate is extracted, filled with uncured rubber, and then replaced back under the base structure. In both cases, the complete structure is then vulcanized to create the finished belt.
Constant flexing can cause dynamic stress fractures in conventionally produced chevron belts
The key issue here is that the uncured rubber compound used to construct the base belt structure cannot be the same as the compound used to fill the moulds. This is because the rubber used in the moulds to create the actual chevron profiles has to be more malleable than the rubber used on the top and bottom cover surfaces so that it can completely fill the mould cavity.
However, this directly creates the ‘Achilles heel’ of all chevron belts made in this way. This is because the contact point where the two different rubber compounds join then becomes a point of weakness. The chevron profiles constantly stretch and flex under tension each time they run around a pulley or drum.
Unless the bond between the base belt carcass and the chevron profile is absolutely flawless then sooner or later dynamic stress fractures in the profile will start to occur, causing the profile to split. Especially on belts conveying hard, heavy lumps of material, the constant impact weakens the joint between the base belt and the chevron. Either way, eventually the chevron will part company with the rest of the belt.
The problem is significantly magnified on conveyors with relatively small pulley diameters, especially mobile equipment. The smaller the pulley then the higher the dynamic stress. Failure will happen even sooner if one (or both) of the rubber compounds used are not fully resistant (as per ISO 1431 testing) to the effects of degradation (surface cracking) created by chemical reactions in the rubber caused by ground-level ozone and ultraviolet light.
Having to use a rubber that is sufficiently malleable (pliable) so that it will fill the mould cavities and accept the dynamical strains of belt operation often creates a second major ‘belt life-threatening’ weakness.
Research and experience has shown that the rubber used to make the chevrons in the conventional two-step production process almost invariably has much lower resistance to abrasive wear than would normally be acceptable. It is not unusual, especially among so-called ‘economy’ belts imported from Asia, that even chevrons as high as 25mm or 32mm can wear almost completely flat in a remarkably short time.
Q: How to avoid the disadvantages of Chevron Conveyor Belt?
A: Firstly it requires the use of a single rubber compound that has been specially engineered for both the base belt structure AND the chevrons. Secondly, it is essential that the belt is produced as a single, wholly homogenous structure. This can only be achieved using a one-step production process rather than the more conventional two-step process. In other words, making the belt once makes it considerably stronger. The inescapable truth is that a homogenous structure, even if damaged or split, is simply much stronger and more resilient against spreading damage or having profiles shear off completely when two non-identical materials (compounds) are bonded together.
That may sound straightforward to achieve but it is a surprisingly tall order. Firstly, it is extremely difficult (and more costly) to create such a versatile rubber compound. This is largely due to the huge number of different chemicals, polymers, and additives that are used to create synthetic rubber. All of the various components have to be very precisely balanced and mixed so that the final compound possesses all the necessary physical properties.
These properties include wear resistance, tensile strength, and durability while at the same time also being sufficiently malleable to allow the rubber to flow smoothly and evenly into the moulds. The rubber then needs to be able to vulcanize virtually simultaneously within the mould AND the base belt structure. Not only that, but the compound also needs to be fully resistant to the effects of ozone and ultraviolet light (for the longevity of working life) and conform to European REACH regulations so that the end product is also safe to handle.
To create a single homogenous structure the base belt (at this stage comprising of only uncured rubber) is placed in the vulcanising press between the base plate of the press and a chevron mould plate positioned immediately below it. The base belt will already also have a specific quantity of uncured rubber on the top cover surface in addition to the volume of rubber needed to achieve the minimum thickness of the top cover of the base belt once it has been vulcanised. The actual amount of ‘extra’ rubber needed depends on the design and depth of the chevron pattern. The compression of the upper and lower plates then forces the additional rubber to flow into and fill the mould cavities. Vulcanisation of both the base belt structure and the rubber-filled moulds then takes place simultaneously to form a single homogenous unit.
Bearing in mind the technical complexity and the higher costs involved, perhaps it is not surprising that apart from Dunlop Conveyor Belting, hardly any other manufacturer of a note produces profiled chevron belt in this way. However, the significantly superior strength, reliability, and much longer working life that is created by chevron belting being made in this way makes it not only worth the effort but also worth the investment.
Q: What are the benefits of using Chevron Conveyor Belt?
A: The Chevron Belt will allow you to save a lot of money due to its greater productivity and lower danger of workplace injuries. With this relatively simple belt conveyor improvement, you can lift and move more materials faster.
The most frequent accidents that happen to manual employees are falling and lifting. Workers must strike a balance between the competing demands of efficiency and safety, particularly while transferring items between levels. The Chevron conveyor belt can improve factory safety by reducing the need for physical labor.
Furthermore, conveyor belts can help you make your workplace a safer place for your employees. Transportation injuries and downtime can be reduced by using well-maintained machinery, allowing for increased efficiency.
Chevron profile conveyor belts are an important component of a wide range of conveyors that are used to transfer products up and down inclines and grades while preventing sliding. This is especially true in areas where space is limited.
Chevron belts can be used to transfer loose as well as bulky materials on incline surfaces. There are multiple areas where this type of conveyor belt can be utilized to meet the needs of transportation.
Q: What performance does Chevron Conveyor Belt have?
A: Excellent physical property of rubber, high adhesion and fatigue resistance
Integrated vulcanized cover and cleat rubber prevent the chevron belt cleat from coming off.
Better cleat rubber property and abrasion extend the useful life
Its adjustable design for various chevron conveyor belt by incline angle from range of 16º - 45º.
Excellent drainage character.
Excellent weather resistance and property of cleat, not easy to crack and become deformed.
High abrasive high tensile cleats.
Good flexibility and tear resistance.
Integrated vulcanized cleats and base belt prevent the cleats from coming off.
Different rubber property and carcass strength can be designed according to requirement.
Chevron conveyor belt is designed for inclined transportation for conveying bulk material such as coal, sand, mineral, crop, package and bag depending on different loading material and inclined angle to choose suitable cleat height and chevron type to prevent loading material from dropping down.
Ports and transshipment operations.
Wood industry.
Smelteries.
Coal-fired power plants.
Agriculture.
Recycling industry.
Sand and gravel industry.
Others.
Q: What are the pattern types of Chevron Conveyor Belt?
A: There are two common types of chevron conveyor belt patterns:
Open V type: The open V type chevron pattern making it suitable for transporting lighter materials with a tendency to slip, such as wood chips or fine gravel.
Suitable for handling bulk materials or bags upto 40 degree C, slip resistant and big conveying capacity.
Chevron Pattern: Open V type, Closed V type, L Type, H Type, U type
Belt width
Chevron conveyor belts come in various widths, ranging from 400mm to 2200mm.
Belt thickness
The thickness of the belt can range from 4 to 30mm, depending on the application.
Chevron height
The height of the chevron pattern can range from 5 to 32mm, depending on the angle and spacing of the pattern. The biggest conveying angle can reach 28 degree; when conveying soft packaging materials are applied, maximum 35 degree angle can be reached.
Tensile strength
The tensile strength of the chevron conveyor belt can range from 15 to 24 Mpa OR 150 to 240 Kg/cm2.
Operating temperature
The operating temperature of the chevron conveyor belt can range from -25°C to +80°C.
Abrasion resistance
Chevron conveyor belts are designed to be highly resistant to abrasion, making them suitable for transporting heavy materials over long distances.
The belt material can vary depending on the application, with common materials including polyester, nylon, and steel cord.
Closed V type: The closed V type chevron pattern, making it suitable for transporting heavier materials to slide, such as sand or coal.
The choice of chevron pattern type depends on the material being transported and the angle of incline of the conveyor. Different industries may have for the chevron pattern type and height to ensure maximum efficiency and safety during material transport.
Q: Where is Chevron Conveyor Belt used?
A: Chevron Conveyor belt is widely used in conveying bulk material handling areas such as
General Duty belt requires of the steep incline angle.
Mass materials like Gravels, Sand and Fine coal.
Wood Chips, Timber Industry and Sawmills.
Pellets, Unit loads like Bagged Materials, Sacks, etc.
Cement Industry, Concrete Plants.
Agriculture, Grains and other foods industry.
Steel plant, Crushed Metallic cores, aluminum smelters.
Road Construction.
Heavy Duty and Metal Scrap.
Waste and Recycling Plants, Solid waste and recycling, Garbage Incineration Plants.
Q: What are the advantages of Chevron Conveyor Belt?
A: Increasing output
Machines can perform tasks much more swiftly than humans can. If you use a chevron belt to move your goods, you won’t have to worry about your workers’ speed or ability to lift heavy loads. Alternatively, you can utilize machinery that can easily transport hundreds of pounds of items and make deliveries in seconds. Lifting and moving more materials faster is possible with this relatively straightforward belt conveyor upgrade.
Controlling danger
Falling and lifting are two of manual laborers’ most common causes of injury. Especially when moving goods between floors, workers must balance the competing priorities of efficiency and safety. Your crew continuously walks a tightrope as they try to find the sweet spot. The possibility of a fall threatens the integrity of materials and puts your workers at risk of being out of commission for a few days or even permanently.
The same logic applies to carrying loads too big for a single person to handle without risking injury to their muscles, joints, or bones. Transportation injuries and subsequent downtime can be mitigated with well-maintained machinery in use, allowing for greater efficiency.
A heightened ability to move
Being unable to get to certain areas of a new site can put you in a problem. The chevron belts’ lightweight construction allows them to reach inaccessible areas, even in the roughest terrain. The Chevron belt come in a variety of styles, and some of them may even be operated by a single person or from a distance, freeing up your staff to focus on the task at hand rather than wrestling with heavy machinery.
Producing cost-savings
The Chevron Belt will help you save a lot of money because of their increased productivity and reduced risk of workplace injuries. You can perform more work in less time and position yourself strategically, despite any topography or landscape features that would typically render specific spots inaccessible. This allows you to reach where you need to go without bothersome roadblocks. With the increased return on investment from each project, Chevron belts more than cover their initial cost.
Q: What are the advantages of Chevron Conveyor Belt in the production line?
A: Chevron conveyor belts are quickly becoming the future of manufacturing processes due to their superior ability to move large amounts of material at high speeds and over long distances. Unlike traditional flat conveyor belts, chevron belts are made from a series of raised cleats, which allow materials to be easily transported up inclines and around curves. The cleats also help to reduce belt slippage, which can cause downtime and lost productivity. Furthermore, chevron conveyor belts are built to be extremely durable, making them ideal for harsh industrial environments. With the ability to handle heavier and more abrasive materials, chevron conveyor belts are the perfect choice for companies that are looking to increase efficiency and productivity.
Increased Efficiency: Chevron conveyor belts are designed to transport materials at an increased rate of speed. This allows for a more efficient production line, reducing the time and effort needed to move materials from one point to another.
Improved Safety: Chevron conveyor belts are designed with a raised chevron-patterned surface, providing better grip for materials being transported. This provides increased safety for workers, as well as preventing materials from slipping or falling off the conveyor belt.
Cost Savings: Chevron conveyor belts are designed for long-term use, providing a cost-effective solution for many manufacturing lines. The belts are made from robust materials that are designed to last, and are available in a variety of sizes and widths, allowing them to be customized to fit the exact requirements of the application.
Reduced Maintenance: Chevron conveyor belts require minimal maintenance and cleaning, reducing the time and effort needed to keep them in proper working order. The belts are also designed to resist wear and tear, further reducing the need for maintenance and repairs.
