Automatic deviation rectifying method for deviation of belt on belt conveyor

Abstract

The invention discloses an automatic deviation rectifying method for deviation of a belt on a belt conveyor. Automatic deviation rectifying of the belt in the running process is achieved. A four-connecting-rod mechanism frame capable of swinging front and back is arranged on a lower half-range return belt of an annular conveying belt of the belt conveyor, belt deviation limiting rods are arranged at the front end and the rear end of the swinging end of the four-connecting-rod mechanism respectively, and a guide deviation correcting wheel is arranged on the four-connecting-rod mechanism. The front side of the deviated belt is connected with a front side belt deviation limiting rod in an abutting mode, the front side belt deviation limiting rod drives a four-bar linkage to swing forwards, and a guiding deviation rectifying wheel is arranged on the four-bar linkage to guide the annular belt backwards. When the belt deviates backwards, the rear side of the deviated belt is connected with the rear side belt deviation limiting rod in an abutting mode, the rear side belt deviation limiting rod drives the four-bar linkage to swing backwards, and the four-bar linkage is provided with the guiding deviation rectifying wheel to guide the annular belt forwards. Therefore, automatic deviation correction of the annular belt during operation is realized.

Description

Technical Field

[0001] The invention relates to a belt conveyor, in particular to an automatic belt deviation correction mechanism of the belt conveyor; the invention 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 Art

[0002] Belt conveyor is an automatic conveying equipment widely used in various industries. It can convey different types of products, such as raw material particles, semi-finished products, fragile items, etc. Belt conveyor has high requirements on the connection accuracy of the ring conveyor belt interface, equipment manufacturing accuracy, and on-site installation accuracy. In the early stage of equipment operation, a lot of man-hours are required to carry out deviation debugging. However, during the operation of the belt conveyor, the belt deviation phenomenon cannot be avoided.

[0003] The existing method for dealing with belt deviation is mainly to set adjustment seats and adjustment screws on the frames on both sides of the redirecting roller, and by rotating the adjustment screw on one side of the roller, the shaft end of one side of the redirecting roller is moved in the front-to-back direction, thereby changing the distance between the two rollers on one side, so as to adjust the tension of one side of the belt to achieve belt deviation correction during operation; this deviation correction method needs to be carried out when the belt conveyor is stopped, and repeated adjustments are required to achieve the purpose of deviation correction, which affects the normal operation of the belt conveyor, especially in some large-scale conveying and sorting enterprises, where belt conveying operation cannot be interrupted. How to achieve automatic deviation correction of the belt on the belt conveyor during operation has become a primary problem that needs to be solved on site. Summary of the invention

[0004] The invention provides an automatic deviation correction method for a belt deviation on a belt conveyor, which realizes the automatic deviation correction of the belt during operation.

[0005] The present invention solves the above technical problems through the following technical solutions: The overall concept of the present invention is as follows: a four-bar linkage frame that can swing forward and backward is arranged on the lower half return belt of the endless conveying belt of the belt conveyor, and belt deviation limit rods are respectively arranged at the front and rear ends of the swing end of the four-bar linkage, and a guide deviation correction wheel is arranged on the four-bar linkage. When the belt deviates forward, the front side of the deviated belt abuts against the front belt deviation limit rod, and the front belt deviation limit rod drives the four-bar linkage to swing forward, so that the guide deviation correction wheel arranged on the four-bar linkage guides the endless belt backward; when the belt deviates backward, the rear side of the deviated belt abuts against the rear belt deviation limit rod, and the rear belt deviation limit rod drives the four-bar linkage to swing backward, so that the guide deviation correction wheel arranged on the four-bar linkage guides the endless belt forward; thereby realizing automatic deviation correction of the endless belt during operation.

[0006] The belt deviation automatic correction mechanism on the belt conveyor comprises a conveyor frame, on which an active roller and a driven roller are respectively arranged, and a closed endless belt consisting of an upper belt and a lower belt is arranged between the active roller and the driven roller; a four-link support angle steel beam is arranged on the conveyor frame inside the driven roller, the four-link support angle steel beam is arranged just below the lower belt and is arranged in a direction perpendicular to the running direction of the endless belt, a rear pin is arranged at the rear end of the four-link support angle steel beam, a front pin is arranged at the front end of the four-link support angle steel beam, a front triangular U-shaped cantilever frame is hinged on the front pin, a rear triangular U-shaped cantilever frame is hinged on the rear pin, and a deviation correction swing arm is hinged between the cantilever outer end of the front triangular U-shaped cantilever frame and the cantilever outer end of the rear triangular U-shaped cantilever frame The rod beam, the four-link supporting angle steel beam, the correction swing bar beam, the front triangular U-shaped cantilever frame and the rear triangular U-shaped cantilever frame form a parallelogram-shaped movable four-link frame mechanism, a front limit vertical rod is arranged at the front end of the correction swing bar beam, a rear limit vertical rod is arranged at the rear end of the correction swing bar beam, and the lower belt is arranged between the front limit vertical rod and the rear limit vertical rod; in the U-shaped groove at the top end of the front triangular U-shaped cantilever frame, a front deflection correction guide wheel support shaft is arranged along the front-to-back direction, and the front deflection correction guide wheel is movably arranged on the front deflection correction guide wheel support shaft; in the U-shaped groove at the top end of the rear triangular U-shaped cantilever frame, a rear deflection correction guide wheel support shaft is arranged along the front-to-back direction, and the rear deflection correction guide wheel is movably arranged on the rear deflection correction guide wheel support shaft; the front deflection correction guide wheel and the rear deflection correction guide wheel are both connected upward to the lower bottom surface of the lower belt.

[0007] An anti-wear pad is connected on the front pin shaft between the top end surface of the four-link support angle steel beam and the bottom end surface of the front triangular U-shaped cantilever frame.

[0008] Movable sleeves are movably sleeved on the front limit vertical pole and the rear limit vertical pole; the front deviation correction guide wheel and the rear deviation correction guide wheel are both a pair of parallel deviation correction guide wheel groups.

[0009] The front triangular U-shaped cantilever frame, the front deflection correction guide wheel support shaft and the front deflection correction guide wheel form an integral deflection correction guide wheel mechanism, which is movably connected to the front pin shaft and can rotate around the front pin shaft; deflection correction guide wheel support shafts are evenly spaced on the four-link support angle steel beam between the rear pin shaft and the front pin shaft, and a deflection correction guide wheel mechanism is arranged on each deflection correction guide wheel support shaft, and the cantilever end of each deflection correction guide wheel mechanism is hinged to the deflection correction rocker beam, and the deflection correction guide wheels on each deflection correction guide wheel mechanism are all connected upward to the lower bottom surface of the lower belt, and this group of deflection correction guide wheel mechanisms jointly realize the deflection correction and guidance of the lower belt.

[0010] The upper belt is moved from right to left, and the lower belt is moved from left to right. If the endless belt deviates to the front side during operation, the front side vertical surface of the lower belt is close to the front limit vertical rod, and the rear side vertical surface of the lower belt is away from the rear limit vertical rod. As the belt deviates to the front side, the left end of the four-link frame mechanism starts to swing forward under the action of the deviation correction swing rod beam moving forward, thereby driving the left end of the cantilever of the front triangular U-shaped cantilever frame and the left end of the cantilever of the rear triangular U-shaped cantilever frame to swing forward synchronously, so that the rotation tangent of the front deviation correction guide wheel and the rotation tangent of the rear deviation correction guide wheel change from the left and right horizontal directions synchronously to the backward inclined direction. In this process, the lower belt is automatically guided and corrected backward when it travels from left to right by the front deviation correction guide wheel and the rear deviation correction guide wheel upwardly contacting and guiding the lower belt backward. If the endless belt deviates to the rear side during operation, the rear side elevation of the lower belt will be in contact with the rear limit vertical pole, and the front side elevation of the lower belt will be away from the front limit vertical pole. As the belt deviates to the rear side more and more, the left end of the four-link frame mechanism begins to swing backward under the action of the backward movement of the correction swing bar beam, thereby driving the left end of the cantilever of the front triangular U-shaped cantilever frame and the left end of the cantilever of the rear triangular U-shaped cantilever frame to swing backward synchronously, so that the rotation tangent of the front correction guide wheel and the rotation tangent of the rear correction guide wheel change synchronously from the left and right horizontal directions to the forward inclined direction. In this process, the front correction guide wheel and the rear correction guide wheel connect the lower belt upward and guide it forward, so that the lower belt can achieve automatic forward guidance and correction when it moves from left to right.

[0011] The present invention arranges a cantilevered four-bar linkage frame just below the lower belt of the endless belt, and deforms the four-bar linkage frame through the effect of deviation on the four-bar linkage frame, so that the guide rollers arranged on the connecting rods guide the belt in the opposite direction of the deviation, thereby realizing deviation correction during the operation of the belt. The structure is simple and ingenious, and the operation of the belt and the deviation correction are carried out synchronously, thereby realizing deviation correction without stopping the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention in the main viewing direction; Figure 2 yes Figure 1 A partial cross-sectional view in the direction BB; Figure 3 It is a schematic diagram of the structure of the present invention when the endless belt is removed, viewed from above; Figure 4 yes Figure 3 AA partial section view; Figure 5It is a structural schematic diagram of the four-link frame of the present invention; Figure 6 It is a structural schematic diagram of the deviation correction guide wheel mechanism of the present invention; Figure 7 It is a working schematic diagram of the guide wheel mechanism for correcting the deviation of the belt when the belt deviates backwards; Figure 8 It is a working schematic diagram of the guide wheel mechanism for correcting the deviation of the belt when the belt deviates forward. DETAILED DESCRIPTION

[0013] The present invention is described in detail below in conjunction with the accompanying drawings: An automatic belt deviation correction mechanism on a belt conveyor comprises a conveyor frame 1, on which a driving roller 2 and a driven roller 3 are respectively arranged, and a closed endless belt consisting of an upper belt 4 and a lower belt 5 is arranged between the driving 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, and a four-link support angle steel beam 6 is arranged on the conveyor frame 1 inside the driven roller 3, and the four-link support angle steel beam 6 is arranged just below the lower belt 5 and is arranged in a direction perpendicular to the running direction of the endless belt, and a rear pin shaft 7 pointing vertically upward is arranged on a horizontal plate at the rear side end of the four-link support angle steel beam 6, and a rear pin shaft 7 pointing vertically upward is arranged on the horizontal plate at the rear side end of the four-link support angle steel beam 6. A vertically upward front pin shaft 8 is arranged on the horizontal plate at the front end of the connecting rod supporting angle steel beam 6, and a front triangular U-shaped cantilever frame 9 is hinged on the front pin shaft 8. The front triangular U-shaped cantilever frame 9 is a U-shaped groove with an opening upward, and the front side vertical plate and the rear side vertical plate of the U-shaped groove are in the shape of a triangular plate, and a rear triangular U-shaped cantilever frame 10 is hinged on the rear pin shaft 7. The shape structure of the rear triangular U-shaped cantilever frame 10 is exactly the same as that of the front triangular U-shaped cantilever frame 9, and a deviation correction swing bar beam 11 is hinged between the cantilever outer end of the front triangular U-shaped cantilever frame 9 and the cantilever outer end of the rear triangular U-shaped cantilever frame 10. The four-link supporting angle steel beam 6, the deviation correction swing bar beam 11, The front triangular U-shaped cantilever frame 9 and the rear triangular U-shaped cantilever frame 10 form a parallelogram-shaped movable four-link frame mechanism, the right end of which is supported on the four-link support angle steel beam 6, presenting a left cantilever structure, and can swing backward or forward around the rear pin shaft 7 and the front pin shaft 8 in the horizontal plane, a front limit vertical upright rod 12 is arranged at the front end of the deviation correction swing bar beam 11, a rear limit vertical upright rod 13 is arranged at the rear end of the deviation correction swing bar beam 11, and the lower belt 5 is arranged between the front limit vertical upright rod 12 and the rear limit vertical upright rod 13; a front deviation correction guide wheel support is arranged in the top U-shaped groove of the front triangular U-shaped cantilever frame 9 along the front and rear directions. A support shaft 14, that is, a front side vertical plate is connected between the top angle of the front triangular vertical plate and the top angle of the rear triangular vertical plate, and a front side correcting guide wheel 15 is movably arranged on the front side correcting guide wheel support shaft 14, and the front side correcting guide wheel 15 can rotate around the front side correcting guide wheel support shaft 14; in the U-shaped groove at the top end of the rear side triangular U-shaped cantilever frame 10, a rear side correcting guide wheel support shaft 16 is arranged along the front and rear directions, and a rear side correcting guide wheel 17 is movably arranged on the rear side correcting guide wheel support shaft 16; the front side correcting guide wheel 15 and the rear side correcting guide wheel 17 are both connected upwardly to the lower bottom surface of the lower belt 5, so that the front side correcting guide wheel 15 and the rear side correcting guide wheel 17 play a guiding role on the lower belt 5.

[0014] An anti-wear pad 18 is connected to the front pin shaft 8 between the top end surface of the four-link support angle steel beam 6 and the bottom end surface of the front triangular U-shaped cantilever frame 9. Since the front triangular U-shaped cantilever frame 9 will rotate around the front pin shaft 8, in order to overcome the wear problem, an anti-wear pad 18 is provided to protect the anti-wear pad 18.

[0015] Movable sleeves are movably mounted on the front limit vertical rod 12 and the rear limit vertical rod 13, so that the sliding friction between the lower belt 5 and the two limit rods is changed into rolling friction, thereby protecting the belt; the front side correcting guide wheel 15 and the rear side correcting guide wheel 17 are both a pair of parallel correcting guide wheel groups.

[0016] The front triangular U-shaped cantilever frame 9, the front side correction guide wheel support shaft 14 and the front side correction guide wheel 15 form an integral correction guide wheel mechanism, which is movably connected to the front pin shaft 8 and can rotate around the front pin shaft 8; correction guide wheel support shafts are evenly spaced on the four-link support angle steel beam 6 between the rear pin shaft 7 and the front pin shaft 8, and a correction guide wheel mechanism is arranged on each correction guide wheel support shaft, and the cantilever end of each correction guide wheel mechanism is hinged to the correction rocker beam 11 to form a plurality of parallel four-link mechanism frames, and the correction guide wheels on each correction guide wheel mechanism are all connected upward to the lower bottom surface of the lower belt 5, and this group of correction guide wheel mechanisms jointly realize the correction and guidance of the lower belt 5, thereby realizing effective correction of the belt.

[0017] An automatic deviation correction method for a belt conveyor, wherein the upper belt 4 runs from right to left, and the lower belt 5 runs from left to right. If the endless belt deviates to the front side during operation, the front side elevation of the lower belt 5 is close to the front limit vertical rod 12, and the rear side elevation of the lower belt 5 is away from the rear limit vertical rod 13. As the belt deviates to the front side, the left end of the four-link frame mechanism begins to move forward under the action of the deviation correction swing bar beam 11 moving forward. The front side U-shaped cantilever frame 9 and the rear side U-shaped cantilever frame 10 swing forward synchronously, so that the rotation tangent of the front side deviation correction guide wheel 15 and the rotation tangent of the rear side deviation correction guide wheel 17 change from the left and right horizontal directions to the backward inclined direction synchronously. In this process, the front side deviation correction guide wheel 15 and the rear side deviation correction guide wheel 17 upwardly connect and guide the lower belt 5 backward, so that the lower belt 5 can realize the automatic backward guidance correction when it moves from left to right. If the endless belt deviates to the rear side during operation, the rear side elevation of the lower belt 5 will be in contact with the rear limit vertical rod 13, and the front side elevation of the lower belt 5 will be away from the front limit vertical rod 12. As the belt deviates to the rear side, the left end of the four-link frame mechanism begins to swing backward under the action of the backward movement of the correction swing bar beam 11, thereby driving the left end of the cantilever of the front triangular U-shaped cantilever frame 9 and the left end of the cantilever of the rear triangular U-shaped cantilever frame 10 to swing backward 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 from the left and right horizontal directions to the forward inclined direction. In this process, the front correction guide wheel 15 and the rear correction guide wheel 17 are used to connect and guide the lower belt 5 upward, so that the lower belt 5 can achieve automatic forward guidance and correction when it moves from left to right.

[0018] The correcting power of the correcting mechanism of the present invention comes from the action of the deviated belt on the correcting four-bar frame. The four-bar frame swings under the action of the deviated belt, realizing a change in the rotation tangent of a set of correcting guide wheels in the opposite direction of the deviation direction. The changed correcting guide wheels guide the belt to move in the opposite direction of the deviation direction, thereby realizing the correction of the belt during operation. When the belt does not deviate, the lower belt 5 will not contact the front limit vertical rod 12, nor will it contact the rear limit vertical rod 13, and the four-bar frame mechanism is basically in a rectangular state.

Claims

1. A method for automatically correcting belt deviation on a belt conveyor, which is achieved by an automatic belt deviation correction mechanism, the automatic belt deviation correction mechanism comprising a conveyor frame (1), on which a driving roller (2) and a driven roller (3) are respectively arranged, and between which a closed endless belt consisting of an upper belt (4) and a lower belt (5) is arranged; and on the conveyor frame (1) inside the driven roller (3) a four-link support angle steel beam (6) is arranged, and the four-link support angle steel beam (6) is arranged on the lower belt ( 5), and is arranged in a direction perpendicular to the running direction of the endless belt, a rear pin shaft (7) is arranged at the rear end of the four-link supporting angle steel beam (6), a front pin shaft (8) is arranged at the front end of the four-link supporting angle steel beam (6), a front triangular U-shaped cantilever frame (9) is hinged on the front pin shaft (8), a rear triangular U-shaped cantilever frame (10) is hinged on the rear pin shaft (7), a deviation correction rocker beam (11) is hinged between the cantilever outer end of the front triangular U-shaped cantilever frame (9) and the cantilever outer end of the rear triangular U-shaped cantilever frame (10), and the four-link supporting angle steel beam (6) is provided with a rear pin shaft (7). The angle steel beam (6), the deviation correction swing bar beam (11), the front triangular U-shaped cantilever frame (9) and the rear triangular U-shaped cantilever frame (10) form a parallelogram-shaped movable four-link frame mechanism. A front limit vertical rod (12) is arranged at the front end of the deviation correction swing bar beam (11), and a rear limit vertical rod (13) is arranged at the rear end of the deviation correction swing bar beam (11). The lower belt (5) is arranged between the front limit vertical rod (12) and the rear limit vertical rod (13). A front deviation correction guide wheel support is arranged in the top U-shaped groove of the front triangular U-shaped cantilever frame (9) along the front-to-back direction. A support shaft (14) is provided with a front side deflection correction guide wheel (15) on the front side deflection correction guide wheel support shaft (14); a rear side deflection correction guide wheel support shaft (16) is provided in the U-shaped groove at the top end of the rear side triangular U-shaped cantilever frame (10) along the front-to-back direction, and a rear side deflection correction guide wheel (17) is provided on the rear side deflection correction guide wheel support shaft (16); the front side deflection correction guide wheel (15) and the rear side deflection correction guide wheel are both connected upward to the lower bottom surface of the lower belt (5); the upper belt (4) runs from right to left, and the lower belt (5) runs from left to right, and is characterized in that The following correction methods: If the endless belt deviates toward the front side during operation, the front side elevation of the lower belt (5) abuts against the front limit vertical rod (12), and the rear side elevation of the lower belt (5) moves away from the rear limit vertical rod (13). As the belt deviates toward the front side, the left end of the four-link frame mechanism begins to swing forward under the action of the forward movement of the deviation correction swing bar beam (11), thereby driving the left end of the cantilever of the front triangular U-shaped cantilever frame (9) and the rear triangular U-shaped cantilever frame (9) to move forward. The left end of the cantilever of the angular U-shaped cantilever frame (10) is synchronously swung forward, so that the rotation tangent of the front deviation correction guide wheel (15) and the rotation tangent of the rear deviation correction guide wheel (17) are synchronously changed from the left and right horizontal directions to the backward tilting direction. In this process, the front deviation correction guide wheel (15) and the rear deviation correction guide wheel (17) are used to push the lower belt (5) upward and guide it backward, so that the lower belt (5) can achieve automatic backward guidance correction when it moves from left to right. If the endless belt deviates to the rear side during operation, the rear side vertical surface of the lower belt (5) is in contact with the rear limit vertical rod (13), and the front side vertical surface of the lower belt (5) is away from the front limit vertical rod (12). As the belt deviates to the rear side, the left end of the four-link frame mechanism begins to swing backward under the action of the deviation correction swing bar beam (11) moving backward, thereby driving the left end of the cantilever of the front triangular U-shaped cantilever frame (9) and the rear triangular U-shaped cantilever frame (9) to move backward. The left end of the cantilever of the angular U-shaped cantilever frame (10) is synchronously swung backward, so that the rotation tangent of the front deviation correction guide wheel (15) and the rotation tangent of the rear deviation correction guide wheel (17) are synchronously changed from the left and right horizontal directions to the forward tilting direction. In this process, the front deviation correction guide wheel (15) and the rear deviation correction guide wheel (17) are used to connect the lower belt (5) upward and guide it forward, so that the lower belt (5) can be automatically guided forward and corrected when it moves from left to right.

2. The automatic deviation correction method for belt deviation on a belt conveyor according to claim 1 or 2, characterized in that: An anti-wear pad (18) is connected to the front pin shaft (8) between the top end surface of the four-link support angle steel beam (6) and the bottom end surface of the front triangular U-shaped cantilever frame (9).

3. The automatic deviation correction method for belt deviation on a belt conveyor according to claim 2 is characterized in that: A movable sleeve is movably sleeved on the front limit vertical pole (12) and the rear limit vertical pole (13); the front deviation correction guide wheel (15) and the rear deviation correction guide wheel (17) are both a pair of parallel deviation correction guide wheel groups.

4. The automatic deviation correction method for belt deviation on a belt conveyor according to claim 3 is characterized in that: The front triangular U-shaped cantilever frame (9), the front deflection correction guide wheel support shaft (14) and the front deflection correction guide wheel (15) form an integral deflection correction guide wheel mechanism, which is movably connected to the front pin shaft (8) and can rotate around the front pin shaft (8); deflection correction guide wheel support shafts are evenly spaced on the four-link support angle steel beam (6) between the rear pin shaft (7) and the front pin shaft (8), and a deflection correction guide wheel mechanism is arranged on each deflection correction guide wheel support shaft, and the cantilever end of each deflection correction guide wheel mechanism is hinged to the deflection correction swing bar beam (11), and the deflection correction guide wheels on each deflection correction guide wheel mechanism are upwardly connected to the lower bottom surface of the lower belt (5), and this group of deflection correction guide wheel mechanisms jointly realize the guidance and deflection correction of the lower belt (5).

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