Large-span grain conveyor with belt deviation prevention
By combining the design of the conveyor unit with the laser rangefinder, the problem of belt misalignment in large-span grain conveyors was solved, achieving stable and efficient grain conveying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI QICHAO INTELLIGENT TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-02
AI Technical Summary
During long-distance transport, the belt of a large-span grain conveyor is prone to shifting, resulting in large installation errors and uneven stress, making it difficult to achieve stable transport.
The conveyor unit design includes a frame, idlers, tension rollers, power rollers, a drive system, and a laser rangefinder. Multiple conveyor units form a conveyor line, and the tension is precisely adjusted by the laser rangefinder to ensure stable belt operation.
This ensured stable operation of the conveyor belt, reduced deviation, improved conveying efficiency and installation accuracy, and guaranteed high efficiency and stability in grain transportation.
Smart Images

Figure CN224312593U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of large-span grain conveyors, specifically a large-span grain conveyor with belt anti-deviation mechanism. Background Technology
[0002] Large-span grain conveyors are high-efficiency conveying equipment used for grain transportation. During loading operations, grain needs to be transferred from the storage and stacking area of the grain warehouse to the loading position via large-span grain conveyors. Large-span grain conveyors are characterized by their large span and strong conveying capacity, meeting the needs of large-scale grain transfer.
[0003] Large-span grain conveyors mostly use long-distance conveyor belts. However, due to the long conveying distance, large-span grain conveyors are prone to installation errors and uneven stress, making tension control more difficult and increasing the risk of belt deviation. Therefore, in order to reduce the impact of belt deviation due to long conveying distance, we provide a large-span grain conveyor with belt deviation prevention. Utility Model Content
[0004] The purpose of this invention is to provide a large-span grain conveyor with anti-deviation belt, ensuring efficient and stable grain conveying.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a large-span grain conveyor with belt anti-deviation, comprising a conveyor line, wherein the conveyor line is composed of several conveyor units arranged and connected sequentially along the conveying direction of the conveyor line, wherein the conveying direction of the conveyor unit is consistent with the conveying direction of the conveyor line, and the conveyor unit comprises a frame, a conveyor belt, idlers, tension rollers, power rollers, a drive system, a fixed bearing frame and an adjustable bearing frame;
[0006] Several idlers are evenly spaced on the frame along the conveying direction of the conveying unit. There are two sets of tension rollers. The tension rollers are located below the idlers. The power roller is located below the middle of the two sets of tension rollers. The conveyor belt is wrapped around the idlers and the power roller. The conveyor belt is in circumferential contact with the tension rollers and runs between the two sets of tension rollers. The two ends of the power roller are fixed on the bearings of the fixed bearing frame and are driven to rotate by the drive system. The two ends of the tension roller are fixed on the bearings of the adjustable bearing frame. The spacing between the two sets of tension rollers along the conveying direction of the conveying unit is adjusted by the sliding of the bearings of the adjustable bearing frame. The conveyor belt is tensioned by the two sets of tension rollers.
[0007] A laser rangefinder is mounted on the frame, with the measuring end of the laser rangefinder facing the edge of the conveyor belt.
[0008] Preferably, the idler rollers, tension rollers, power rollers, and conveyor belts are all symmetrically distributed about the vertical axis of the frame.
[0009] Preferably, the adjustable bearing bracket and the fixed bearing bracket are integrated and fixed on the frame.
[0010] Preferably, the bearing slidably mounted in the frame is adjusted by a lead screw thread to move horizontally.
[0011] Preferably, a pair of laser rangefinders are provided at both ends of the conveyor belt, and the pair of laser rangefinders are respectively distributed on the front and back of the conveyor belt.
[0012] This utility model has the following beneficial effects:
[0013] This utility model sets up a conveying unit, and the conveying line is composed of multiple conveying units. The length can be freely and flexibly set according to the conveying distance. They work together. The conveying unit shortens the length of the conveyor belt compared to a long-distance conveying line, and realizes segmented tension control at multiple points within the length of the conveying line. The rotation of the conveyor belt can be controlled more stably and effectively. Furthermore, through precise adjustment during installation and high-density idler support, efficient and stable grain conveying is achieved. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the conveyor line of this utility model;
[0015] Figure 2 This is a perspective view of the conveying unit of this utility model;
[0016] Figure 3 This is a front sectional view of the conveying unit of this utility model.
[0017] In the diagram: 1. Conveying unit; 11. Frame; 12. Conveyor belt; 13. Idler roller; 14. Tensioner roller; 15. Power roller; 16. Drive system; 17. Fixed bearing frame; 18. Adjustable bearing frame; 2. Laser rangefinder sensor. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] like Figure 1-3As shown, this utility model provides a technical solution: a large-span grain conveyor with belt anti-deviation, including a conveyor line, which is composed of several conveyor units 1 arranged and connected in sequence along the conveyor line direction. The conveyor direction of the conveyor unit 1 is consistent with the conveyor line direction. The conveyor unit 1 includes a frame 11, a conveyor belt 12, idler rollers 13, tension rollers 14, power rollers 15, a drive system 16, a fixed bearing frame 17, and an adjustable bearing frame 18. The idler rollers 13, tension rollers 14, power rollers 15, and conveyor belt 12 are symmetrically distributed about the vertical axis of the frame 11. The tension roller 14 tensions the conveyor belt 12 and also redirects the conveyor belt 12. The adjustable bearing frame 18 and the fixed bearing frame 17 are integrated and fixed on the frame 11. The bearings of the adjustable bearing frame 18 are slidably arranged in the frame and are adjusted horizontally by a screw thread. The drive system 16 is a belt drive mechanism driven by a drive motor.
[0020] A number of idler rollers 13 are evenly spaced on the frame 11 along the conveying direction of the conveying unit 1. There are two sets of tension rollers 14. The tension rollers 14 are located below the idler rollers 13. The power roller 15 is located in the middle below the two sets of tension rollers 14. The conveyor belt 12 is wrapped around the idler rollers 13 and the power roller 15. The conveyor belt 12 is in circumferential contact with the tension rollers 14 and runs between the two sets of tension rollers 14. The two ends of the power roller 15 are fixed on the bearings of the fixed bearing frame 17 and the power roller 15 is driven to rotate by the drive system 16. The two ends of the tension roller 14 are fixed on the bearings of the adjustable bearing frame 18. The spacing between the two sets of tension rollers 14 along the conveying direction of the conveying unit 1 is adjusted by the sliding of the bearings of the adjustable bearing frame 18. The conveyor belt 12 is tensioned by the two sets of tension rollers 14.
[0021] A laser rangefinder 2 is installed on the frame 11. The measuring end of the laser rangefinder 2 is set to the edge of the conveyor belt 12. A pair of laser rangefinders 2 are provided at both ends of the conveyor belt 12, and the pair of laser rangefinders 2 are respectively distributed on the front and back of the conveyor belt 12.
[0022] The conveying unit 1 is relatively symmetrical, with a more uniform force distribution, making it less prone to deviation due to uneven force. When installing the conveyor belt 12, the tension is adjusted by the symmetrical tension rollers 14, resulting in good tension. Each section of the conveying unit 1 can adjust the tension according to the current requirements of the conveyor belt 12. When adjusting the position of the conveyor belt 12, the laser distance sensors 2 at both ends of the conveyor belt 12 can accurately measure the distance to the belt, assisting in the installation and ensuring that both ends of the conveyor belt 12 are aligned on the same horizontal line, resulting in smaller installation errors and more stable and non-deviation of the conveyor belt 12.
[0023] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0024] 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-span grain conveyor with anti-deviation belt, characterized in that: The system includes a conveyor line, which is composed of several conveyor units (1) arranged and connected in sequence along the conveyor line direction. The conveyor direction of the conveyor unit (1) is consistent with the conveyor line direction. The conveyor unit (1) includes a frame (11), a conveyor belt (12), a roller (13), a tension roller (14), a power roller (15), a drive system (16), a fixed bearing frame (17), and an adjustable bearing frame (18). Several idler rollers (13) are evenly spaced on the frame (11) along the conveying direction of the conveying unit (1). There are two sets of tension rollers (14). The tension rollers (14) are located below the idler rollers (13). The power roller (15) is located below and in the middle of the two sets of tension rollers (14). The conveyor belt (12) is wrapped around the idler rollers (13) and the power roller (15). The conveyor belt (12) is in circumferential contact with the tension rollers (14), and the conveyor belt (12) is in contact with the tension rollers (14) on both sides. The tension rollers (14) operate between each other. The two ends of the power roller (15) are fixed on the bearings of the fixed bearing frame (17), and the power roller (15) is driven to rotate by the drive system (16). The two ends of the tension roller (14) are fixed on the bearings of the adjustable bearing frame (18), and the distance between the two sets of tension rollers (14) along the conveying direction of the conveying unit (1) is adjusted by the sliding of the bearings of the adjustable bearing frame (18). The conveyor belt (12) is tensioned by the two sets of tension rollers (14). A laser rangefinder (2) is installed on the frame (11), and the measuring end of the laser rangefinder (2) is set facing the edge of the conveyor belt (12).
2. A large-span grain conveyor with belt anti-deviation feature according to claim 1, characterized in that: The idler roller (13), tension roller (14), power roller (15) and conveyor belt (12) are all symmetrically distributed with the vertical axis of the frame (11) as the axis of symmetry.
3. A large-span grain conveyor with belt anti-deviation feature according to claim 1, characterized in that: The adjustable bearing bracket (18) and the fixed bearing bracket (17) are integrated and fixed on the frame (11).
4. A large-span grain conveyor with belt anti-deviation feature according to claim 1, characterized in that: The adjustable bearing bracket (18) is slidably set in the frame, and the bearing is adjusted by the screw thread to move horizontally.
5. A large-span grain conveyor with anti-deviation belt as described in claim 1, characterized in that: Both ends of the conveyor belt (12) are provided with a pair of laser rangefinders (2), and the pair of laser rangefinders (2) are respectively distributed on the front and back of the conveyor belt (12).