A type of anti-deviation and friction-reducing belt with wavy grooves
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-08-14
AI Technical Summary
[0003]本实用新型的目的在于克服现有技术中皮带易跑偏、与托辊摩擦阻力大导致能耗高、磨损快、寿命短的问题，提供一种通过在皮带本体上设计特定沟槽结构，实现自对中防跑偏、显著降低摩擦阻力、延长设备寿命的皮带
1、自对中防跑偏效应：波浪形沟槽（4）的周期性起伏结构能够与配套使用的托辊（5）表面预设的凹槽或凸起形成几何啮合效应或引导效应。当皮带（1）发生轻微侧向偏移趋势时，沟槽（4）的波浪形侧壁与托辊（5）表面的相应结构相互作用，产生一个自动将皮带拉回中心位置的恢复力（自对中效应），有效防止跑偏，无需依赖复杂的调心机构。
Smart Images
Figure CN224632475U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material conveying equipment technology, specifically to an improvement in the structure of a conveyor belt for a belt conveyor, particularly a belt with a specific wavy groove structure on the bearing surface or non-bearing surface of the belt to achieve comprehensive effects such as preventing deviation, reducing friction and consumption, and extending service life. Background Technology
[0002] Belt conveyors are widely used in industries such as mining, ports, power, and building materials. Belt misalignment and high running resistance are two long-standing technical challenges. (1) Belt misalignment: During operation, belts are prone to lateral deviation (belt misalignment) due to uneven tension, uneven material load, and roller installation errors. Belt misalignment can lead to wear and tear on the belt edges, material spillage, and in severe cases, even equipment failure and production stoppage. Existing anti-belt misalignment measures mainly include setting up side guards and self-aligning rollers, but side guards increase friction and cost, while self-aligning rollers have complex structures and limited effectiveness. (2) Frictional resistance problem: Sliding friction between the belt and the idler is one of the main sources of resistance in the operation of the conveyor, consuming a lot of energy. Reducing friction can not only save energy, but also reduce the wear of the belt and idler, extend their service life, and reduce maintenance costs. Traditional methods, such as using low-friction idler or lubricant, have limited effect or bring problems such as environmental pollution and maintenance trouble. Therefore, there is an urgent need for a belt body improvement solution that is simple in structure, effective, and requires no additional complex mechanisms or maintenance, in order to simultaneously solve the problems of belt misalignment and high frictional resistance. Utility Model Content
[0003] The purpose of this invention is to overcome the problems of belt misalignment, high energy consumption, rapid wear, and short lifespan caused by high frictional resistance with idlers in the prior art. It provides a belt that achieves self-centering and anti-misalignment, significantly reduces frictional resistance, and extends equipment life by designing a specific groove structure on the belt body. The technical solution adopted by this utility model to solve the technical problem is: a belt with a wavy groove for preventing deviation and reducing friction, including a belt body (1), wherein at least one groove (4) extending along the length of the belt is provided on the non-load-bearing surface (3) of the belt body (1). The cross-sectional profile of the groove (4) is a periodically undulating wave shape, and the wave structure is composed of alternating and continuously arranged protrusions (41) and recesses (42). Preferably, the wavy groove (4) is continuously provided in one or more predetermined areas in the width direction of the belt, especially in areas near the two side edges of the belt, or covering the entire working surface of the belt. Preferably, the undulation frequency (number of peaks and troughs per unit length) and undulation amplitude (height difference between peaks and troughs) of the protrusion (41) and the recess (42) are optimized according to parameters such as belt width (B), belt speed (V), and load (Q). Preferably, when the belt width (B≥1200mm), a wave structure with a higher undulation frequency (3~5 cycles / cm) and a larger undulation amplitude (1.5-3mm) should be adopted. Preferably, when the belt speed is V≥2m / s, a wave structure with a medium to low frequency (2~3 cycles / cm) and a medium amplitude (1~2mm) should be adopted. Preferably, the wave structure has a moderate undulation frequency (2~4 cycles / cm) and a groove amplitude that is not too large (0.5-1mm) when the load is Q≥500kg / m. Preferably, the depth of the groove (4) is less than the thickness of the belt body (1), and the preferred depth range is 15% of the belt thickness. Preferably, the width of the groove (4) is determined according to the size and distribution density of the wave-shaped structure. Preferably, the sidewalls of the trench (4) can be sloping or approximately vertical. Preferably, the surface of the belt body (1), especially the surface of the groove (4), may be provided with a wear-resistant layer or a low-friction coefficient coating. The periodic undulating wave shape can be a sine wave, a sawtooth wave, or a square wave. The sine wave is suitable for high-speed operation scenarios with belt speed ≥3m / s to optimize the air film lubrication effect. The sawtooth wave is suitable for heavy-load scenarios with load ≥800kg / m to enhance the structural compressive strength. The square wave is suitable for medium-speed scenarios with belt speed 1.5-3m / s to balance anti-deviation and manufacturing processability. The working principle and beneficial effects of this utility model: 1. Self-aligning anti-deviation effect: The periodic undulating structure of the wavy groove (4) can form a geometric meshing effect or guiding effect with the pre-set grooves or protrusions on the surface of the matching idler roller (5). When the belt (1) has a slight tendency to shift laterally, the wavy sidewall of the groove (4) interacts with the corresponding structure on the surface of the idler roller (5) to generate a restoring force that automatically pulls the belt back to the center position (self-aligning effect), effectively preventing deviation without relying on a complex self-aligning mechanism. 2. Significantly reduced contact area: The presence of the wavy groove (4) significantly reduces the actual contact area between the belt (1) and the idler roller (5). Laboratory tests and industrial scenario verification show that, compared to a smooth belt surface without grooves, the wavy groove structure reduces the contact area by 42% under typical working conditions of 500 kg / m load and 3 m / s belt speed, as measured by laser scanning. 3. Aerodynamic lubrication effect: When the belt (1) is running at high speed, the undulating structure of the wavy groove (4) (especially the recessed part 42) can effectively guide and capture air. The guided air forms a dynamic, thin air film at the contact interface between the belt (1) and the idler (5). This air film acts like a lubricant, partially separating the solid contact parts of the belt (1) and the idler (5), changing sliding friction into mixed friction (solid contact + air film shear), thereby further reducing the coefficient of friction and frictional resistance. Laboratory simulation confirms that under the typical working condition of 500 kg / m load and 3 m / s belt speed, the groove recessed part generates directional vortices, which promote the formation of a dynamic air film at the contact interface, reducing the coefficient of friction by 37%. 4. Extending Equipment Service Life: Combining the above two points (reduced contact area and air lubrication), the friction between the belt (1) and the idler roller (5) is significantly reduced. This not only reduces drive energy consumption, but more importantly, it significantly reduces wear on the non-load-bearing surface (3) of the belt and the surface of the idler roller. The reduction in wear directly extends the service life of the belt (1) and the idler roller (5), reduces the frequency of replacement and maintenance downtime caused by wear, and helps to reduce the overall maintenance and replacement costs of the equipment. After 500 hours of continuous operation testing, the belt wear rate was reduced by 35%, and the service life was extended by about 30%. 5. Improved thermal management: Reduced friction means a significant reduction in frictional heat generation. The operating temperature of the contact area between the belt (1) and the idler (5) is reduced. This helps prevent the belt rubber material from aging, hardening, and cracking due to long-term overheating, and also reduces the risk of idler bearing failure due to excessive temperature rise, thus improving the safety and reliability of the system operation. Attached Figure Description
[0004] Figure 1 This is a three-dimensional schematic diagram of the belt (with wavy grooves) of this utility model. Figure 2 for Figure 1 The cross-sectional profile of the wavy groove (4) (protrusion 41 and depression 42). Figure 3 This is a schematic diagram of the working relationship between the belt and the idler roller of this utility model. The labels in the diagram are as follows: 1-Belt body, 2-Carrying surface, 3-Non-carrying surface, 4-Wave groove, 41-Protrusion, 42-Recess, 5-Idler roller. Detailed Implementation
[0005] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to this description. As attached Figure 1-3As shown, the belt body 1 of this invention is made of conventional rubber composite material. On the non-load-bearing surface 3 of the belt body 1, within a width of approximately 15cm near both sides, multiple wavy grooves 4 are arranged parallel to each other along the length direction. The cross-sectional profile of the grooves 4 presents a continuous, regular sine wave, composed of alternating protrusions 41 and recesses 42. In this embodiment, the depth of the grooves 4 is approximately 15% of the total belt thickness, the groove width is approximately 3mm, and the groove height is approximately 2mm. The sidewalls of the grooves 4 are designed as smooth slopes. When belt 1 is installed on the belt conveyor and is in operation: Anti-deviation: The surface of the idler roller 5 under the belt usually has corresponding shallow grooves or ridges. If the belt 1 deviates slightly, the wavy sidewall of the groove 4 interacts with the structure of the idler roller 5 surface to generate a lateral guiding force, causing the belt to automatically return to the correct position. Friction reduction: The top of the protrusion 41 is the main contact point, and the recess 42 forms a cavity. This directly reduces the solid contact area by about 40%. At the same time, when the belt runs at high speed, air is "scooped up" by the recess 42 and brought into the contact area, forming a local air film between the top of the protrusion 41 and the idler roller 5. The reduction in contact area and the lubricating effect of the air film together reduce frictional resistance. Life Extension and Temperature Reduction: The significant reduction in frictional resistance leads to a substantial decrease in wear rate and effective control of operating temperature rise. Experiments show that, under the same operating conditions, the service life of belts and idlers using this structure is expected to be extended by 30%, and the operating temperature is reduced. The above values are only exemplary embodiments. In actual applications, the number, location, depth, width, specific shape of the wavy pattern, distribution area, and other parameters of the grooves should be optimized and adjusted according to factors such as the specific belt specifications, the characteristics of the conveyed material, the operating speed, the belt speed, and environmental conditions.
Claims
1. A misalignment resistant friction reducing belt having wave shaped grooves, comprising a belt body (1), characterized in that: At least one groove (4) extending along the length of the belt is provided on the non-load-bearing surface (3) of the belt body (1); the cross-sectional profile of the groove (4) is a periodically undulating wave shape, which is composed of alternating and continuously arranged protrusions (41) and depressions (42).
2. The anti-deviation and friction-reducing belt with wavy grooves according to claim 1, characterized in that: The wavy groove (4) is continuously provided in one or more predetermined areas in the width direction of the belt.
3. The anti-deviation and friction-reducing belt with wavy grooves according to claim 2, characterized in that: The predetermined area includes the area near the two sides of the belt, and its width is 10%-20% of the total width of the belt.
4. The anti-deviation and friction-reducing belt with wavy grooves according to claim 1, characterized in that: The undulation frequency and undulation amplitude of the protrusion (41) and the recess (42) are designed according to the belt running parameters.
5. The anti-deviation and friction-reducing belt with wavy grooves according to claim 1, characterized in that: The depth of the groove (4) is less than the thickness of the belt body (1), and the depth range is 15% of the belt thickness.
6. The anti-deviation and friction-reducing belt with wavy grooves according to claim 1, characterized in that: The sidewalls of the trench (4) are sloping.
7. The anti-deviation and friction-reducing belt with wavy grooves according to claim 1, characterized in that: The surface of the belt body (1), especially the surface of the groove (4), is provided with a wear-resistant layer or a low-friction coefficient coating.
8. The anti-slip, friction reducing belt having wave-shaped grooves according to any one of claims 1 to 7, characterized in that: The periodic undulating wave shape can be a sine wave, a sawtooth wave, or a square wave; the sine wave is suitable for high-speed operation scenarios with belt speed ≥3m / s to optimize the air film lubrication effect; the sawtooth wave is suitable for heavy-load scenarios with load ≥800kg / m to enhance the structural compressive strength. Square waveforms are suitable for medium-speed applications with belt speeds of 1.5-3m / s, balancing anti-deviation and manufacturing processability.