A belt deviation correction unit and a belt deviation correction system

Abstract

The application relates to the technical field of conveying equipment, in particular to a belt conveyor deviation rectifying unit and a deviation rectifying system, wherein the belt conveyor deviation rectifying unit comprises a crossbeam arranged in a rack, a roller unit is arranged on the upper portion of the crossbeam, a rotating deviation rectifying mechanism is arranged between the crossbeam and the roller unit, the rotating deviation rectifying mechanism comprises a rotary driving mechanism, the rotary driving mechanism is connected with the roller unit, the rotary driving mechanism is used for driving the roller unit to rotate by a certain angle in the crossbeam, the rotating deviation rectifying mechanism comprises a swash plate, the swash plate is fixed on the upper side of the middle portion of the crossbeam, a rotating disc is coaxially arranged on the upper portion of the swash plate, the rotating disc is fixed with the bottom of the roller unit, and the inclined axis of the swash plate is perpendicular to the conveying direction of the belt conveyor. The power rotary driving mechanism is arranged to drive the roller unit to rotate by a certain angle, so that a lateral deviation rectifying component force is generated to rectify the belt, the belt is easy to control, the control precision is high, the response speed is fast, and the influence of the environmental temperature is small.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, and in particular to a belt conveyor correction unit and correction system. Background Technology

[0002] Loose materials or packaged goods are typically transported using belt conveyors, which are widely used in industries such as mining, metallurgy, and coal. Belt conveyor misalignment is the most common fault. When the conveyor is impacted by materials or due to idler roller failure, uneven force can easily occur on the belt during operation, causing the belt centerline to deviate from the conveyor centerline, ultimately resulting in the conveyor belt veering to one side. Belt misalignment leads to severe friction between the belt and the frame, causing the belt edges to become rough or even torn. This affects the lifespan of both the belt and the idlers in the frame, and can also cause material to spill outwards, potentially leading to material sludge buildup on the rollers and causing the conveyor belt to break. Some existing technologies use friction wheels on the outside of the side idlers to prevent misalignment. While friction wheels are widely used in both unidirectional and bidirectional reversible belt conveyors, they cause significant wear on both the conveyor belt and the friction wheel when in contact with the belt. Friction wheels that do not rotate for extended periods are also prone to jamming, easily causing significant damage to the edges of the conveyor belt. Another method involves adjusting rotating idlers to change the direction of force on the belt and achieve belt deviation correction. Chinese patent application CN215591820U discloses a fully automatic passive hydraulic belt deviation correction support device for mining belt conveyors. The idler assembly is adjusted by using a drive wheel, gear pump and swing adjustment cylinder. However, the ambient temperature has a significant impact on the fluidity of the hydraulic oil. The hydraulic adjustment has problems such as slow response, difficulty in ensuring adjustment accuracy, complex structure and high control difficulty, and is prone to material spillage and poor deviation correction effect. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned technical deficiencies by providing a belt conveyor correction unit and correction system. The system uses an electrically driven rotary drive mechanism to drive the idler roller unit to rotate at a certain angle, thereby generating a lateral correction force to correct the belt deviation. At the same time, it causes the idler roller to generate a certain vertical horizontal angle, thus solving problems such as poor correction effect and material spillage.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a belt conveyor correction unit, including a crossbeam set in the frame, an idler roller unit on the upper part of the crossbeam, and a rotation correction mechanism between the crossbeam and the idler roller unit. The rotation correction mechanism includes a rotation drive mechanism, which is connected to the idler roller unit. The rotation drive mechanism is used to drive the idler roller unit to rotate a certain angle in the crossbeam.

[0005] To further optimize this technical solution, the rotation correction mechanism includes a swashplate, which is fixed to the upper middle part of the crossbeam. A turntable is coaxially mounted on the upper part of the swashplate, and the turntable is fixed to the bottom of the idler roller unit. The tilting axis of the swashplate is perpendicular to the conveying direction of the belt conveyor.

[0006] To further optimize this technical solution, a rotating shaft is provided at the bottom center of the turntable, and a self-aligning bearing is provided between the rotating shaft and the crossbeam. A limiting cylinder is provided on the outer side of the upper part of the crossbeam corresponding to the position of the self-aligning bearing. One end of the bottom of the rotating shaft passes through the self-aligning bearing and is threadedly connected to a fastening bolt.

[0007] This invention provides a belt conveyor correction unit, wherein the rotary drive mechanism is a worm gear drive mechanism, a worm gear part is provided on one side of the turntable, and the output shaft of the rotary motor is connected to the worm part, and the worm part and the worm gear part mesh and transmit power.

[0008] To further optimize this technical solution, a baffle is provided on the upper part of the worm gear drive mechanism, and the baffle is detachably connected to the upper part of the turntable.

[0009] This invention provides a belt conveyor correction unit, wherein the rotary drive mechanism is a toggle mechanism, a through groove is provided on one side of the idler unit, the length direction of the through groove is perpendicular to the rotation axis of the idler unit, a toggle rod is inserted into the through groove, a joint ball is provided at the top of the toggle rod, the joint ball is slidably disposed in the through groove, and a pull rod is provided at the bottom of the toggle rod.

[0010] To further optimize this technical solution, a guide cylinder is provided at the position corresponding to the pull rod and the actuating rod, and the bottom of the actuating rod is slidably set inside the guide cylinder.

[0011] A belt conveyor correction system includes a belt conveyor correction unit as described above. The same belt conveyor includes multiple correction units, namely a first correction unit and an nth correction unit. The first correction unit is driven to rotate by a worm gear drive mechanism, and the nth correction unit is driven to rotate by a toggle mechanism. The toggle mechanism drives a rotating pull rod, and one end of the pull rod is linked to the rotation of the idler roller unit in the first correction unit.

[0012] To further optimize this technical solution, one end of the pull rod is provided with a joint bearing. The pull rod is linked with the rotation of the first correction unit through the joint bearing. The other end of the pull rod is provided with a slide groove along the length direction. A drive shaft is inserted through the slide groove. The drive shaft is vertically set at the end of the telescopic rod extending from one end of the telescopic mechanism. The end of the telescopic mechanism away from the telescopic rod is hinged in the frame.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The electric rotary drive mechanism drives the idler roller unit to rotate at a certain angle, thereby generating a lateral correction force to correct the belt deviation. It is easy to operate, has high control precision, fast response speed, and is less affected by ambient temperature; 2. The swashplate makes the idler rollers have a certain vertical horizontal angle, which can avoid material spillage caused by inertial impact during the correction process; 3. The belt correction force is achieved by the combined action of the material's own gravity and the friction of the idler rollers, resulting in stronger correction capability; 4. The tie rod enables the correction linkage of multiple idler roller units, making the correction force of the idler rollers on the belt more evenly distributed, the entire correction action more stable, the correction action easier to control, and avoiding concentrated force on the belt; 5. It can adapt to the correction of conveyor belts running in both forward and reverse directions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a belt conveyor correction system; Figure 2 This is a cross-sectional view of a belt conveyor correction unit; Figure 3 This is a top view of a belt conveyor straightening system; Figure 4 This is a schematic diagram of the swashplate in the belt conveyor's alignment unit. Figure 5 This is a side view of the nth correction unit in the belt conveyor correction system; Figure 6 for Figure 1 A magnified view of a portion of point A in the middle; Figure 7 This is a top view of a belt conveyor correction system after its correction action. Figure 8 A front view of a belt conveyor correction system after its correction action; In the diagram: 1. Frame; 11. Crossbeam; 111. Limiting cylinder; 12. Swashplate; 13. Limiting housing groove; 2. Idler roller unit; 21. Turntable; 211. Worm gear; 212. Rotating shaft; 213. Self-aligning bearing; 214. Fastening bolt; 22. Through groove; 3. Rotary motor; 30. Baffle; 31. Worm gear; 4. Tie rod; 40. Guide cylinder; 41. Actuating rod; 411. Joint ball; 42. Slide groove; 5. Telescopic mechanism; 50. Telescopic rod; 51. Drive shaft; 10. Joint bearing. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0016] Example 1: Combining Figure 1-2 As shown, a belt conveyor alignment unit includes a crossbeam 11 fixed in a frame 1. Idler units 2 are mounted on the upper part of the crossbeam 11. Each idler unit 2 includes a bottom roller and symmetrically arranged inclined side rollers on both sides. A rotating alignment mechanism is provided between the crossbeam 11 and the idler units 2. The rotating alignment mechanism includes a swashplate 12, which is fixed to the upper middle part of the crossbeam 11. A turntable 21 is coaxially mounted on the upper part of the swashplate 12. The turntable 21 is fixed to the bottom of the idler units 2. The tilting axis of the swashplate 12 is perpendicular to the conveying direction of the belt conveyor. The top plane of the swashplate 12 contacts the bottom plane of the turntable 21. The contact surface is slidably arranged or has rolling balls installed on the sliding surface to reduce friction between the two.

[0017] A rotating shaft 212 is located at the bottom center of the turntable 21. A self-aligning bearing 213 is provided between the rotating shaft 212 and the crossbeam 11. A limiting cylinder 111 is provided on the outer side of the upper part of the crossbeam 11 corresponding to the position of the self-aligning bearing 213. One end of the bottom of the rotating shaft 212 passes through the self-aligning bearing 213 and is threadedly connected to a fastening bolt 214. The self-aligning bearing 213 is used to restrict the translation of the idler roller unit 2.

[0018] The rotational correction mechanism includes a rotary drive mechanism, which can be a worm gear drive mechanism or a toggle mechanism. The rotary drive mechanism is connected to the idler roller unit 2 and is used to drive the idler roller unit 2 to rotate a certain angle within the crossbeam 11.

[0019] Combination Figure 2-3 As shown, when the rotary drive mechanism is a worm gear drive mechanism, a worm gear part 211 is provided on one side of the turntable 21, and the output shaft of the rotary motor 3 is connected to the worm gear part 31. The worm gear part 31 meshes with the worm gear part 211 for transmission. The rotary motor 3 can be a servo motor or a stepper motor.

[0020] A baffle 30 is provided on the upper part of the worm gear drive mechanism, and the baffle 30 is detachably connected to the upper part of the turntable 21. The baffle 30 is provided to prevent foreign objects from falling in and affecting the meshing transmission of the worm gear.

[0021] Of course, the rotation drive of turntable 21 can also be a spur gear meshing drive, which is not shown in the figure.

[0022] Combination Figure 5-8As shown, when the rotary drive mechanism is a toggle mechanism, a through groove 22 is provided on one side of the roller unit 2. The length direction of the through groove 22 is perpendicular to the rotation axis of the roller unit 2. A toggle rod 41 is inserted into the through groove 22. A joint ball 411 is provided at the top of the toggle rod 41, and the joint ball 411 is slidably disposed in the through groove 22. A pull rod 4 is provided at the bottom of the toggle rod 41. A guide cylinder 40 is provided at the position corresponding to the pull rod 4 and the toggle rod 41. The bottom of the toggle rod 41 is slidably disposed in the guide cylinder 40. The pull rod 4 is slidably disposed in the limiting shell groove 13, which is fixedly fastened to the upper part of the crossbeam 11. The setting of the limiting shell groove 13 restricts the movement of the pull rod 4 in the same plane.

[0023] Example 2: Combination Figure 1 , 3 As shown in Figure 7, a belt conveyor correction system includes the belt conveyor correction unit in Embodiment 1. The same belt conveyor includes multiple correction units, namely a first correction unit and an nth correction unit. The first correction unit is driven to rotate by a worm gear drive mechanism, and the nth correction unit is driven to rotate by a toggle mechanism. The toggle mechanism drives the rotating pull rod 4. One end of the pull rod 4 is linked to the rotation of the idler roller unit 2 in the first correction unit. One end of the pull rod 4 is provided with a spherical bearing 10, and the pull rod 4 is linked to the rotation of the first correction unit through the spherical bearing 10. The other end of the pull rod 4 is provided with a groove 42 along its length, and a drive shaft 51 passes through the groove 42. The drive shaft 51 is vertically arranged at the end of the telescopic rod 50 extending from one end of the telescopic mechanism 5. The end of the telescopic mechanism 5 away from the telescopic rod 50 is hinged in the frame 1. To improve accuracy, the telescopic mechanism 5 can be equipped with a linear motor.

[0024] In use, the worm gear drive mechanism drives the idler roller unit in the first correction unit to rotate around the rotating shaft 212. At this time, the corresponding idler roller unit 2, under the action of the turntable 21 and the swashplate 12, rotates, causing the bottom idler roller to form an angle of V with the horizontal plane. The originally parallel and horizontal idler rollers now have correction angles in two directions, making the correction more reliable and preventing material from spilling from the belt during correction. To make the belt correction process smoother, multiple correction units can be set in the conveyor. The nth correction unit can adjust the position of the lever 41 in the pull rod 4 by extending the telescopic mechanism 5. The change in the position of the lever 41 changes the lever arm length of the pull rod 4 acting on the nth idler roller unit, allowing each nth idler roller unit to rotate at different angles, further making the belt correction smoother and preventing damage to the belt from the correction action.

[0025] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A belt conveyor correction unit, comprising a crossbeam (11) disposed in a frame (1), wherein an idler roller unit (2) is provided on the upper part of the crossbeam (11), characterized in that: A rotation correction mechanism is provided between the crossbeam (11) and the idler roller unit (2). The rotation correction mechanism includes a rotation drive mechanism, which is connected to the idler roller unit (2). The rotation drive mechanism is used to drive the idler roller unit (2) to rotate a certain angle in the crossbeam (11). The rotation correction mechanism also includes a swashplate (12), which is fixed to the upper middle part of the crossbeam (11). A turntable (21) is coaxially provided on the upper part of the swashplate (12), and the turntable (21) is fixed to the bottom of the roller unit (2).

2. The belt conveyor correction unit according to claim 1, characterized in that: The turntable (21) has a rotating shaft (212) at its center bottom. A self-aligning bearing (213) is provided between the rotating shaft (212) and the crossbeam (11). A limiting sleeve (111) is provided on the outer side of the upper part of the crossbeam (11) corresponding to the position of the self-aligning bearing (213). One end of the bottom of the rotating shaft (212) passes through the self-aligning bearing (213) and is threadedly connected to a fastening bolt (214).

3. The belt conveyor correction unit according to any one of claims 1 to 2, characterized in that: The rotary drive mechanism is a worm gear drive mechanism. A worm gear part (211) is provided on one side of the turntable (21). The output shaft of the rotary motor (3) is connected to a worm gear part (31). The worm gear part (31) meshes with the worm gear part (211) for transmission.

4. The belt conveyor correction unit according to claim 3, characterized in that: The upper part of the worm gear drive mechanism is provided with a baffle (30), which is detachably connected to the upper part of the turntable (21).

5. The belt conveyor correction unit according to any one of claims 1 to 2, characterized in that: The rotary drive mechanism is a toggle mechanism. A through groove (22) is provided on one side of the roller unit (2). The length direction of the through groove (22) is perpendicular to the rotation axis of the roller unit (2). A toggle rod (41) is inserted into the through groove (22). A joint ball (411) is provided at the top of the toggle rod (41). The joint ball (411) is slidably disposed in the through groove (22). A pull rod (4) is provided at the bottom of the toggle rod (41).

6. The belt conveyor correction unit according to claim 5, characterized in that: The pull rod (4) is provided with a guide cylinder (40) at the position corresponding to the actuating rod (41), and the bottom of the actuating rod (41) is slidably disposed in the guide cylinder (40).

7. A belt conveyor belt alignment system, characterized in that: The same belt conveyor includes multiple belt alignment units, namely a first belt alignment unit and an nth belt alignment unit. The first belt alignment unit includes the belt conveyor alignment unit as described in claim 3. The first belt alignment unit is driven to rotate by a worm gear drive mechanism. The nth belt alignment unit includes the belt conveyor alignment unit as described in claim 5. The nth belt alignment unit is driven to rotate by a toggle mechanism. The toggle mechanism drives the rotating pull rod (4). One end of the pull rod (4) is linked to the rotation of the idler roller unit (2) in the first belt alignment unit.

8. A belt conveyor alignment system according to claim 7, characterized in that: One end of the pull rod (4) is provided with a joint bearing (10). The pull rod (4) is linked with the rotation of the first correction unit through the joint bearing (10). The other end of the pull rod (4) is provided with a slide groove (42) along the length direction. A drive shaft (51) is inserted in the slide groove (42). The drive shaft (51) is vertically arranged at the end of the telescopic rod (50) extending from one end of the telescopic mechanism (5). The end of the telescopic mechanism (5) away from the telescopic rod (50) is hinged in the frame (1).

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