Anti-fracture large-dip-angle belt conveying device
By adding long idlers and increasing the density of idlers at the bottom of the return section of the belt at large inclination angles, the problem of easy damage to the corrugated sidewalls was solved, the service life of the belt was extended, production costs and labor intensity of workers were reduced, and production stability was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-03-31
AI Technical Summary
The corrugated sidewalls of high-angle belts are prone to damage in a short period of time, leading to belt breakage and material loss, which affects production efficiency and safety.
Long idlers are added to the bottom of the belt return section and the idler density is increased. The lower idler is connected to the roller shaft through a radial ball bearing. The two ends of the roller shaft are connected to the frame. The surface of the lower idler is covered with a rubber layer. The corrugated sidewall has a cord fabric interlayer. The idler spacing is not uniformly set so that the belt is supported by multiple points of force.
It effectively avoids wear and impact on the corrugated edge, extends the belt service life to 13 months, reduces the failure rate, reduces production costs, reduces the labor intensity of workers, and improves production stability.
Smart Images
Figure CN224061755U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of belt conveyors, and in particular relates to a large-angle belt conveyor device that is designed to prevent breakage. Background Technology
[0002] Inclined belt conveyors are mainly used for continuous conveying of bulk materials at steep angles. They employ conveyor belts with corrugated sidewalls and cross diaphragms, and the conveying angle ranges from 0 to 90°. They are widely used in industries such as coal, grain, building materials, chemicals, hydropower, agriculture, ports, and metallurgy, offering the advantages of general-purpose belt conveyors: high reliability for horizontal or low-angle conveying, energy saving, and reliable and economical material handling.
[0003] Large-angle belt conveyors mainly include patterned belt or deep-groove belt conveyors, corrugated sidewall belt conveyors, and press belt conveyors. Large-angle belt conveyors are suitable for situations where the upward conveying angle is greater than 18° and the downward conveying angle is greater than -16° in roadways. They generally require steel cord conveyor belts, deep-groove idler devices, soft start and power balancing systems.
[0004] Corrugated sidewall belt conveyors utilize a specially structured conveyor belt designed for conveying materials at steep angles, with a lifting angle of up to 90°. They offer smooth and reliable operation with low noise and low energy consumption. Corrugated sidewall belt conveyors are a special type of belt conveyor capable of conveying bulk materials at steep angles and even vertically lifting them. Their structure is basically similar to general belt conveyors, the main difference being the use of a specially designed corrugated sidewall conveyor belt. Corrugated sidewall conveyor belts consist of a standard conveyor belt (fabric core belt or steel cord core belt) with flexible, stretchable S-shaped or W-shaped rubber corrugated sidewalls of varying heights glued to both sides. Simultaneously, transverse partitions are glued at regular intervals to the base belt between the two sidewalls to facilitate material loading.
[0005] The finished product conveying system of a rotary kiln is an essential part of the production process, significantly impacting the overall efficiency of lime production. Currently, the corrugated sidewalls of the steeply inclined conveyor belt suffer severe short-term damage. (See attached structural diagram.) Figure 3 The bottom of the belt return section is supported by short idlers on both outer sides of the corrugated sidewall. The corrugated sidewall is frequently damaged, scratched, or even broken by the short idlers, and its service life is only about three months, seriously affecting production. Due to the damage to the corrugated sidewall, material falls out of the belt during transportation, which not only increases the labor intensity of the workers on site, but also poses safety problems. Utility Model Content
[0006] The purpose of this invention is to provide a large-angle belt conveyor device that prevents breakage, overcomes the shortcomings of the prior art, protects the corrugated sidewalls of the belt, solves the problem of material falling, reduces the workload of personnel, extends the service life of the rotary kiln transfer belt, reduces the rotary kiln transfer cost, and improves the rotary kiln operating rate.
[0007] To achieve the above objectives, this utility model employs the following technical solution:
[0008] A breakage-resistant, steep-angle belt conveyor includes a belt, a frame, a power roller, a tail roller, an upper idler roller, and a lower idler roller. The frame has a power roller at the head and a tail roller at the tail. A belt is wound between the power roller and the tail roller. The belt on the frame is divided into a forward belt and a return belt. An upper idler roller is located below the forward belt, and a lower idler roller is located at the bottom of the return belt. The lower idler roller is a single, continuous roller that supports the lower edge of the corrugated sidewall of the return belt. The lower idler roller is connected to a roller shaft via a radial ball bearing. Both ends of the roller shaft are connected to the frame. The spacing between adjacent lower idler rollers is 250-450 mm.
[0009] Furthermore, the surface of the lower roller is covered with a rubber layer with a thickness of 8-25mm.
[0010] Furthermore, the rubber layer is natural rubber or styrene-butadiene rubber.
[0011] Furthermore, the thickness of the corrugated edge is 2-6mm, and a curtain fabric interlayer is provided in the center of it.
[0012] Furthermore, the lower support roller can be a powered roller or a non-powered roller.
[0013] Furthermore, the minimum spacing between adjacent lower rollers is 300mm.
[0014] Furthermore, the spacing between the lower idler rollers on the return belt surface is not uniform.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1) By adding long idlers at the bottom of the belt return section and increasing the density of idlers, multiple "forces" can be used to support the wavy sidewall of the large-angle belt, effectively avoiding damage to the skirt and preventing wear and impact on the skirt caused by the original short idlers, thus achieving the goal of extending the service life of the large-angle belt.
[0017] 2) Significantly reduced the failure rate of the entire large-angle belt idler system, reduced production costs, and increased the sustainable production cycle. The service life of the large-angle belt has been extended from three months to 13 months, which has increased the company's efficiency and played a good role in ensuring the smooth operation of rotary kiln production.
[0018] 3) The corrugated sidewalls of the belt are no longer damaged, which solves the problem of material falling during the conveying process, reduces the workload of the staff, and is highly praised by the workers. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the structure of an embodiment of the present utility model;
[0020] Figure 2 yes Figure 1 Sectional view along line AA;
[0021] Figure 3 This is a schematic diagram of the arrangement of large-angle belt idlers in the prior art;
[0022] In the diagram: 1-Belt, 2-Frame, 3-Power roller, 4-Tail roller, 5-Upper support roller, 6-Lower support roller, 7-Corrugated sidewall. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.
[0025] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0026] See Figure 1-2This is a schematic diagram of an embodiment of a breakage-resistant, large-angle belt conveyor device according to this utility model. It includes a belt 1, a frame 2, a power roller 3, a tail roller 4, an upper idler roller 5, and a lower idler roller 6. The frame 2 has a power roller 3 at its head and a tail roller 4 at its tail. The belt 1 is wound between the power roller 3 and the tail roller 4. The belt 1 on the frame 2 is divided into a forward belt 1a and a return belt 1b. The upper idler roller 5 is located below the forward belt 1a, and the lower idler roller 6 is located at the bottom of the return belt 1b. The lower idler roller 6 is a continuous... The lower idler roller 6 supports the lower edge of the corrugated sidewall 7 of the return belt 1. The lower idler roller 6 is connected to the roller shaft via a radial ball bearing. Both ends of the roller shaft are connected to the frame 2. The spacing between adjacent lower idler rollers 6 is 250-450mm, with a minimum spacing of 300mm preferred. The densely spaced idler rollers, instead of the original 1500mm spacing, are spaced at 300mm to support the large-angle belt. Even if the sidewall is chipped or has broken teeth, it will not be damaged by impact. This embodiment of the invention eliminates the short idler rollers on both sides of the corrugated sidewall 7 in the original design, replacing them with a continuous lower idler roller 6. This multi-point "force distribution" supports the large-angle return belt, avoiding wear and impact on the sidewall 7 and extending the service life of the large-angle belt.
[0027] To reduce belt wear, a 10mm thick rubber layer is applied to the surface of the lower idler roller 6. This rubber layer, made of either natural rubber or styrene-butadiene rubber, acts as a buffer for the belt. The rubber layer is less hard than the belt itself, thus protecting it. The corrugated sidewall 7 is 2-6mm thick and has a centrally located cord fabric interlayer to enhance its strength and wear resistance.
[0028] In this embodiment, the lower idler roller 6 can be either a powered roller or a non-powered roller. The advantage of a non-powered roller is its low cost, as it rotates under the drag of the corrugated sidewall. The powered roller maintains the same rotational speed as the corrugated sidewall, which reduces wear on the lower idler roller. The spacing of the lower idler rollers 6 on the return belt surface is not uniform; it is determined based on the belt's slack state, with the spacing between sections with greater sag being smaller than that between sections with less sag.
[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A large angle belt conveyor with anti-breaking, comprising a belt, a frame, a driving roller, a tail roller, an upper supporting roller and a lower supporting roller, the head of the frame is provided with the driving roller, the tail of the frame is provided with the tail roller, the belt is wound between the driving roller and the tail roller, the belt on the frame is divided into a forward belt and a return belt, the upper supporting roller is arranged below the forward belt, and the lower supporting roller is arranged at the bottom of the return belt, characterized in that, The lower supporting roller is a full-length roller, which is supported at the lower edge of the wavy baffle of the return belt, and is connected with the roller shaft through a centripetal ball bearing, and the two ends of the roller shaft are connected with the frame, and the distance between adjacent lower supporting rollers is 250-450 mm.
2. A large angle belt conveyor with breakage prevention according to claim 1, characterized in that The surface of the lower supporting roller is covered with a rubber layer with a thickness of 8-25 mm.
3. A large angle belt conveyor with breakage prevention according to claim 2, characterized in that The rubber layer is natural rubber or styrene-butadiene rubber.
4. A large angle belt conveyor with breakage prevention according to claim 1, characterized in that, The thickness of the wavy baffle is 2-6 mm, and a layer of canvas is arranged in the middle.
5. A large angle belt conveyor with breakage prevention according to claim 1, characterized in that, The lower supporting roller is a powered roller or an unpowered roller.
6. A large angle belt conveyor with breakage prevention according to claim 1, characterized in that, The minimum distance between adjacent lower supporting rollers is 300 mm.
7. A large angle belt conveyor with breakage prevention according to claim 1, characterized in that The distance between the lower supporting rollers is not uniform.