Automatic deviation rectifying mechanism for belt deviation on belt conveyor
By installing a four-bar linkage mechanism that can swing back and forth and a guide wheel on the belt conveyor, the problem of belt misalignment is solved, and automatic correction without stopping the machine is achieved, ensuring the efficient operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-14
AI Technical Summary
Existing belt conveyors frequently experience belt misalignment during operation, and traditional correction methods require shutdown for adjustment, affecting the normal operation of the equipment, especially in large conveying and sorting enterprises where it cannot be interrupted.
A four-bar linkage mechanism that can swing back and forth is installed on the lower half of the return belt of the annular conveyor belt of the belt conveyor. The belt deviation limit rod drives the guide correction wheel to realize the automatic correction of the belt during operation.
It enables automatic belt deviation correction during operation, avoiding downtime for adjustments and ensuring efficient and stable equipment operation.
Smart Images
Figure CN224118092U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a belt conveyor, and more particularly to an automatic belt deviation correction mechanism for a belt conveyor; it can be widely used in various types of belt conveyors, aiming to maintain the efficient and stable operation of the equipment and reduce the adverse effects of belt deviation on production. Background Technology
[0002] Belt conveyors are a type of automated conveying equipment widely used in various industries. They can transport different types of products, such as raw material granules, semi-finished products, and fragile items. Belt conveyors have high requirements for the connection accuracy of the ring conveyor belt interface, the precision of equipment manufacturing, and the accuracy of on-site installation. In the early stages of equipment operation, a lot of time is required for belt misalignment adjustment. However, belt misalignment is still unavoidable during the operation of belt conveyors.
[0003] Existing methods for addressing belt misalignment primarily involve installing adjusting seats and adjusting screws on both sides of the frame of the redirecting roller. By rotating the adjusting screw on one side of the roller, the shaft end of that roller moves in the forward and backward direction, thereby changing the distance between the two rollers on one side and adjusting the tension of the belt on that side to correct belt misalignment during operation. However, this method requires the belt conveyor to be stopped and necessitates repeated adjustments to achieve the desired correction, affecting the normal operation of the belt conveyor. This is especially problematic in large conveyor and sorting enterprises where belt conveyor operation cannot be interrupted. Therefore, achieving automatic belt misalignment correction during operation on belt conveyors has become a primary issue that needs to be addressed on-site. Summary of the Invention
[0004] This invention provides an automatic belt deviation correction mechanism for belt conveyors, which realizes automatic belt deviation correction during operation.
[0005] The present invention solves the above technical problems through the following technical solutions:
[0006] The overall concept of this invention is as follows: A four-bar linkage frame that can swing back and forth is set on the lower half of the return belt of the annular conveyor belt of a belt conveyor. Belt deviation limiting rods are respectively set at the front and rear ends of the swing end of the four-bar linkage. Guide wheels are set on the four-bar linkage. When the belt deviates forward, the front side of the deviated belt comes into contact with the front belt deviation limiting rod, which drives the four-bar linkage to swing forward, causing the guide wheels on the four-bar linkage to guide the annular belt backward. When the belt deviates backward, the rear side of the deviated belt comes into contact with the rear belt deviation limiting rod, which drives the four-bar linkage to swing backward, causing the guide wheels on the four-bar linkage to guide the annular belt forward. Thus, automatic deviation correction of the annular belt is achieved during operation.
[0007] An automatic belt misalignment correction mechanism for a belt conveyor includes a conveyor frame, on which a driving roller and a driven roller are respectively arranged. A closed annular belt composed of an upper belt and a lower belt is arranged between the driving roller and the driven roller. A four-bar linkage support angle steel beam is arranged on the conveyor frame inside the driven roller. The four-bar linkage support angle steel beam is located directly below the lower belt and is arranged in a direction perpendicular to the running direction of the annular belt. A rear pin is provided at the rear end of the four-bar linkage support angle steel beam, and a front pin is provided at the front end of the four-bar linkage support angle steel beam. A front triangular U-shaped cantilever frame is hinged to the front pin, and a rear triangular U-shaped cantilever frame is hinged to the rear pin. A correction pendulum is hinged between the outer ends of the cantilever frames of the front and rear triangular U-shaped cantilever frames. The rod beam, the four-bar linkage angle steel beam, the correction swing beam, the front triangular U-shaped cantilever, and the rear triangular U-shaped cantilever form a parallelogram movable four-bar linkage frame mechanism. A front limiting vertical pole is set at the front end of the correction swing beam, and a rear limiting vertical pole is set at the rear end of the correction swing beam. The lower belt is set between the front limiting vertical pole and the rear limiting vertical pole. In the U-shaped groove at the top of the front triangular U-shaped cantilever, a front correction guide wheel support shaft is set along the front-rear direction, and a front correction guide wheel is movably set on the front correction guide wheel support shaft. In the U-shaped groove at the top of the rear triangular U-shaped cantilever, a rear correction guide wheel support shaft is set along the front-rear direction, and a rear correction guide wheel is movably set on the rear correction guide wheel support shaft. Both the front and rear correction guide wheels are abutted upwards against the lower bottom surface of the lower belt.
[0008] An anti-wear pad is threaded through the front pin between the top surface of the four-link support angle steel beam and the bottom surface of the front triangular U-shaped cantilever.
[0009] Movable sleeves are movably fitted onto both the front and rear limit vertical poles; the front and rear correction guide wheels are both a pair of parallel correction guide wheel sets.
[0010] The front triangular U-shaped cantilever, the front correction guide wheel support shaft, and the front correction guide wheel form an integrated correction guide wheel mechanism. This correction guide wheel mechanism is movably connected to the front pin shaft and can rotate around the front pin shaft. Correction guide wheel support shafts are equally spaced on the four-bar support angle steel beam between the rear pin shaft and the front pin shaft. Each correction guide wheel support shaft is equipped with a correction guide wheel mechanism. The cantilever end of each correction guide wheel mechanism is hinged to the correction swing rod beam. Furthermore, the correction guide wheels on each correction guide wheel mechanism are all pressed upward against the lower bottom surface of the lower belt. This set of correction guide wheel mechanisms together realizes the correction and guidance of the lower belt.
[0011] An automatic correction method for belt misalignment on a belt conveyor is disclosed. The upper belt runs from right to left, and the lower belt runs from left to right. If the annular belt deviates forward during operation, the front vertical surface of the lower belt comes into contact with the front limit post, and the rear vertical surface of the lower belt moves away from the rear limit post. As the belt deviates further forward, the left end of the four-bar linkage mechanism begins to swing forward under the action of the forward movement of the correction swing beam. This causes the left ends of the cantilever of the front and rear triangular U-shaped cantilever frames to swing forward synchronously. This causes the rotation tangents of the front and rear correction guide wheels to change synchronously in a backward tilting direction from the left and right horizontal directions. During this process, the front and rear correction guide wheels push against the lower belt upward and guide it backward, enabling the lower belt to achieve automatic backward guidance and correction while traveling from left to right.
[0012] If the belt deviates to the rearward side during operation, the rear vertical surface of the lower belt will come into contact with the rear limit post, while the front vertical surface of the lower belt will move away from the front limit post. As the belt deviates further to the rearward side, the left end of the four-bar linkage mechanism will begin to swing backward under the action of the backward movement of the correction swing beam. This will cause the left ends of the cantilever of the front triangular U-shaped cantilever and the left ends of the cantilever of the rear triangular U-shaped cantilever to swing backward synchronously. This will cause the rotation tangent of the front correction guide wheel and the rotation tangent of the rear correction guide wheel to change synchronously from the left and right horizontal direction to a forward tilting direction. During this process, through the upward contact and forward guidance of the front and rear correction guide wheels on the lower belt, the lower belt will achieve automatic forward guidance and correction as it travels from left to right.
[0013] This invention features a cantilevered four-bar linkage frame positioned directly below the lower section of the annular belt. By exploiting belt misalignment, the four-bar linkage frame deforms, causing guide rollers on the linkages to guide the belt in the opposite direction of the misalignment. This achieves belt misalignment correction during belt operation. The structure is simple and ingenious, allowing belt operation and misalignment correction to occur simultaneously, enabling misalignment correction without stopping the machine. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of the present invention in the main viewing direction;
[0015] Figure 2 yes Figure 1 Partial sectional view of BB direction in the middle;
[0016] Figure 3 This is a schematic diagram of the structure of the present invention after the annular belt is removed, viewed from above.
[0017] Figure 4 yes Figure 3 A partial sectional view along line AA in the middle;
[0018] Figure 5 This is a schematic diagram of the four-bar linkage of the present invention;
[0019] Figure 6 This is a schematic diagram of the guiding wheel mechanism of the present invention;
[0020] Figure 7 This is a schematic diagram of the working mechanism of the belt correction guide wheel when the belt deviates backward according to the present invention;
[0021] Figure 8 This is a schematic diagram of the working mechanism of the guide wheel for correcting belt deviation when it runs forward according to the present invention. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the accompanying drawings:
[0023] An automatic belt misalignment correction mechanism for a belt conveyor includes a conveyor frame 1. A drive roller 2 and a driven roller 3 are respectively mounted on the conveyor frame 1. A closed annular belt consisting of an upper belt 4 and a lower belt 5 is positioned between the drive roller 2 and the driven roller 3. The upper belt 4 runs from right to left, and the lower belt 5 runs from left to right. A four-bar linkage support angle steel beam 6 is mounted on the conveyor frame 1 inside the driven roller 3. The four-bar linkage support angle steel beam 6 is positioned directly below the lower belt 5 and perpendicular to the running direction of the annular belt. A vertically upward rear pin 7 is mounted on the horizontal plate at the rear end of the four-bar linkage support angle steel beam 6. A vertically upward-facing front pin 8 is provided on the horizontal plate at the front end of the connecting rod supporting angle steel beam 6. A front triangular U-shaped cantilever 9 is hinged to the front pin 8. The front triangular U-shaped cantilever 9 is an upward-opening U-shaped groove. The front and rear upright plates of the U-shaped groove are triangular in shape. A rear triangular U-shaped cantilever 10 is hinged to the rear pin 7. The shape and structure of the rear triangular U-shaped cantilever 10 are exactly the same as those of the front triangular U-shaped cantilever 9. A correction swing beam 11 is hinged between the outer end of the cantilever of the front triangular U-shaped cantilever 9 and the outer end of the cantilever of the rear triangular U-shaped cantilever 10. The four-link supporting angle steel beam 6 and the correction swing beam 11 are connected. The front triangular U-shaped cantilever 9 and the rear triangular U-shaped cantilever 10 form a parallelogram-shaped movable four-bar linkage mechanism. The right end of this four-bar linkage mechanism is supported on the four-bar support angle steel beam 6, presenting a cantilever structure to the left. It can swing backward or forward on the horizontal plane around the rear pin 7 and the front pin 8. A front limiting vertical pole 12 is set at the front end of the corrective swing beam 11, and a rear limiting vertical pole 13 is set at the rear end of the corrective swing beam 11. The lower belt 5 is set between the front limiting vertical pole 12 and the rear limiting vertical pole 13. In the U-shaped groove at the top of the front triangular U-shaped cantilever 9, along the front-rear direction, a front corrective guide wheel support is set. A support shaft 14, which is a front vertical plate passing through the apex of the front triangular vertical plate and the apex of the rear triangular vertical plate, has a front correction guide wheel 15 movably mounted on the front correction guide wheel support shaft 14, and the front correction guide wheel 15 can rotate around the front correction guide wheel support shaft 14; in the U-shaped groove at the top of the rear triangular U-shaped cantilever 10, a rear correction guide wheel support shaft 16 is provided along the front-rear direction, and a rear correction guide wheel 17 is movably mounted on the rear correction guide wheel support shaft 16; both the front correction guide wheel 15 and the rear correction guide wheel 17 are abutted upwards against the lower bottom surface of the lower belt 5, so that the front correction guide wheel 15 and the rear correction guide wheel 17 play a guiding role for the lower belt 5.
[0024] An anti-wear pad 18 is threaded through the front pin 8 between the top surface of the four-link support angle steel beam 6 and the bottom surface of the front triangular U-shaped cantilever 9. Since the front triangular U-shaped cantilever 9 will rotate around the front pin 8, the anti-wear pad 18 is set in order to overcome the wear problem and protect the anti-wear pad 18.
[0025] Movable sleeves are movably fitted on both the front limiting vertical rod 12 and the rear limiting vertical rod 13, so that the sliding friction between the lower belt 5 and the two limiting rods is changed to rolling friction, which plays a role in protecting the belt; the front correction guide wheel 15 and the rear correction guide wheel 17 are both a pair of parallel correction guide wheel sets.
[0026] The front triangular U-shaped cantilever 9, the front correction guide wheel support shaft 14, and the front correction guide wheel 15 form an integral correction guide wheel mechanism. This correction guide wheel mechanism is movably connected to the front pin shaft 8 and can rotate around the front pin shaft 8. Correction guide wheel support shafts are equally spaced on the four-bar linkage support angle steel beam 6 between the rear pin shaft 7 and the front pin shaft 8. Each correction guide wheel support shaft is equipped with a correction guide wheel mechanism. The cantilever end of each correction guide wheel mechanism is hinged to the correction swing arm beam 11, forming multiple sets of parallel four-bar linkage frames. Furthermore, the correction guide wheels on each correction guide wheel mechanism are all pushed upwards against the lower bottom surface of the lower belt 5. This set of correction guide wheel mechanisms together realizes the correction and guidance of the lower belt 5, achieving effective belt correction.
[0027] An automatic correction method for belt misalignment on a belt conveyor is disclosed. The upper belt 4 runs from right to left, and the lower belt 5 runs from left to right. If the annular belt misaligns forward during operation, the front vertical surface of the lower belt 5 will come into contact with the front limit post 12, and the rear vertical surface of the lower belt 5 will move away from the rear limit post 13. As the forward misalignment intensifies, the left end of the four-bar linkage mechanism, under the action of the forward movement of the correction swing beam 11, begins to move towards... The forward swing causes the left ends of the cantilever of the front triangular U-shaped cantilever 9 and the left ends of the cantilever of the rear triangular U-shaped cantilever 10 to swing forward synchronously, so that the rotation tangent of the front correction guide wheel 15 and the rotation tangent of the rear correction guide wheel 17 change synchronously in the backward tilting direction from the left and right horizontal direction. During this process, through the upward contact and backward guidance of the front correction guide wheel 15 and the rear correction guide wheel 17 on the lower belt 5, the lower belt 5 achieves automatic backward guidance and correction while traveling from left to right.
[0028] If the annular belt deviates to the rear side during operation, the rear vertical surface of the lower belt 5 will come into contact with the rear limit pole 13, and the front vertical surface of the lower belt 5 will move away from the front limit pole 12. As the belt deviates further to the rear side, the left end of the four-bar linkage mechanism will start to swing backward under the action of the backward movement of the correction swing beam 11. This will cause the left end of the cantilever of the front triangular U-shaped cantilever 9 and the left end of the cantilever of the rear triangular U-shaped cantilever 10 to swing backward synchronously. This will cause the rotation tangent of the front correction guide wheel 15 and the rotation tangent of the rear correction guide wheel 17 to change forward in a synchronous forward tilt direction from the left and right horizontal direction. During this process, through the upward contact and forward guidance of the front correction guide wheel 15 and the rear correction guide wheel 17 on the lower belt 5, the lower belt 5 will achieve automatic forward guidance and correction while moving from left to right.
[0029] The corrective force of the correction mechanism of the present invention comes from the action of the misaligned belt on the four-bar linkage frame. The four-bar linkage frame swings under the action of the misaligned belt, realizing the change of the rotation tangent of a set of correction guide wheels in the opposite direction to the misalignment direction. The changed correction guide wheels guide the belt to move in the opposite direction to the misalignment direction, thereby realizing the correction during the belt operation. When the belt is not misaligned, the lower belt 5 will not contact the front limit vertical pole 12, nor will it contact the rear limit vertical pole 13. The four-bar linkage frame mechanism is basically in a rectangular state.
Claims
1. An automatic belt misalignment correction mechanism for a belt conveyor, comprising a conveyor frame (1), wherein a driving roller (2) and a driven roller (3) are respectively arranged on the conveyor frame (1), and a closed annular belt composed of an upper belt (4) and a lower belt (5) is arranged between the driving roller (2) and the driven roller (3); characterized in that, A four-bar support angle steel beam (6) is provided on the conveyor frame (1) inside the driven roller (3). The four-bar support angle steel beam (6) is located directly below the lower belt (5) and is arranged in a direction perpendicular to the running direction of the annular belt. A rear pin (7) is provided at the rear end of the four-bar support angle steel beam (6), and a front pin (8) is provided at the front end of the four-bar support angle steel beam (6). A front pin (8) is hinged to the front pin (8). A side triangular U-shaped cantilever (9) is hinged to a rear triangular U-shaped cantilever (10) on a rear pin (7). A correction swing beam (11) is hinged between the outer end of the cantilever of the front triangular U-shaped cantilever (9) and the outer end of the cantilever of the rear triangular U-shaped cantilever (10). The four-link support angle steel beam (6), the correction swing beam (11), the front triangular U-shaped cantilever (9), and the rear triangular U-shaped cantilever (10) form a flat... The quadrilateral movable four-bar linkage mechanism has a front limiting vertical rod (12) at the front end of the corrective swing beam (11) and a rear limiting vertical rod (13) at the rear end of the corrective swing beam (11). The lower belt (5) is located between the front limiting vertical rod (12) and the rear limiting vertical rod (13). In the U-shaped groove at the top of the front triangular U-shaped cantilever (9), a front corrective guide wheel support shaft (1) is provided along the front-rear direction. 4) A front correction guide wheel (15) is movably mounted on the front correction guide wheel support shaft (14); a rear correction guide wheel support shaft (16) is provided in the U-shaped groove at the top of the rear triangular U-shaped cantilever (10) along the front-rear direction, and a rear correction guide wheel (17) is movably mounted on the rear correction guide wheel support shaft (16); both the front correction guide wheel (15) and the rear correction guide wheel (17) are pushed upward against the bottom surface of the lower belt (5).
2. The automatic belt misalignment correction mechanism for a belt conveyor according to claim 1, characterized in that, A wear-resistant pad (18) is threaded through the front pin (8) between the top surface of the four-link support angle steel beam (6) and the bottom surface of the front triangular U-shaped cantilever (9).
3. The automatic belt misalignment correction mechanism for a belt conveyor according to claim 2, characterized in that, Movable sleeves are movably connected to both the front limiting vertical pole (12) and the rear limiting vertical pole (13); the front correction guide wheel (15) and the rear correction guide wheel (17) are both a pair of parallel correction guide wheel sets.
4. The automatic belt misalignment correction mechanism for a belt conveyor according to claim 3, characterized in that, The front triangular U-shaped cantilever (9), the front correction guide wheel support shaft (14), and the front correction guide wheel (15) form an integral correction guide wheel mechanism. The correction guide wheel mechanism is movably connected to the front pin shaft (8) and can rotate around the front pin shaft (8). Correction guide wheel support shafts are equally spaced on the four-bar support angle steel beam (6) between the rear pin shaft (7) and the front pin shaft (8). A correction guide wheel mechanism is provided on each correction guide wheel support shaft. The cantilever end of each correction guide wheel mechanism is hinged to the correction swing beam (11). Furthermore, the correction guide wheel on each correction guide wheel mechanism is pushed upward against the bottom surface of the lower belt (5). This set of correction guide wheel mechanisms together realizes the correction guidance of the lower belt (5).