Multi-target material distribution belt conveyor and laser positioning error compensation process

Abstract

The invention provides a multi-target material distribution belt conveyor and a laser positioning error compensation technology, and belongs to the technical field of belt conveying, the multi-target material distribution belt conveyor comprises a main conveying belt, a material distribution conveying belt, positioning targets and a first laser detection mechanism, and when the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the first laser detection mechanism detects the second positioning target corresponding to the target material distribution position; and the walking mechanism runs in a decelerating mode and stops when a second positioning target corresponding to the target material distribution position is detected. Before the material distribution conveying belt walks to the material distribution position, the first laser detection mechanism passes through a first positioning target to generate a corresponding electric signal, at the moment, the walking mechanism is controlled to slow down, then the walking mechanism stops when a second positioning target is detected, and at the moment, the inertia of the material distribution conveying belt is greatly reduced; therefore, the position precision during stopping can be effectively improved, and the problem of stopping deviation in a traditional structure is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of belt conveyors, and in particular relates to a multi-target material distribution belt conveyor and a laser positioning error compensation process. Background Art

[0002] A belt conveyor is a commonly used material conveying device that primarily uses a long, continuously running belt to move materials from one location to another. This type of equipment can be used for horizontal, inclined, and vertical conveying and is particularly suitable for conveying powdered, granular, and small-block materials such as cement, grain, fertilizer, sand, coke, pulverized coal, ash, concrete, and wood chips.

[0003] A belt conveyor primarily consists of rollers, a drive unit, a tensioning device, and a frame. Its operating principle is that the drive unit drives a transmission belt (belt) with the help of rollers to transport materials. Belt conveyors offer advantages such as simple structure, low cost, easy maintenance, high conveying capacity, long conveying distances, stable operation, strong adaptability, high load capacity, low noise pollution, and easy installation.

[0004] A splitter belt conveyor is a specially designed belt conveyor whose primary function is to disperse and distribute materials during conveying. This type of equipment typically consists of a main conveyor belt and some auxiliary splitter devices that can distribute the material to multiple outlets or silos.

[0005] In the related prior art, the material distribution belt conveyor will have position deviation each time it stops, resulting in a deviation in the material discharge position. Over time, the deviation will increase, affecting production operations. Summary of the Invention

[0006] The present invention aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, in a first aspect, the present invention provides a multi-target material distribution belt conveyor that can ensure parking accuracy and solve the deviation problem in traditional structures.

[0007] In a second aspect, the present invention provides a laser positioning error compensation process applied to the above-mentioned multi-target material distribution belt conveyor.

[0008] The multi-target material distribution belt conveyor according to the first embodiment of the present invention includes: A main conveyor belt extending in a first direction, with support rails provided on both sides of the main conveyor belt; A material distribution conveyor belt, the material distribution conveyor belt is mounted on the support rail, the material distribution conveyor belt extends along a second direction perpendicular to the first direction, and the material distribution conveyor belt is provided with a walking mechanism; Positioning targets, a plurality of which are provided along the length direction of the main conveyor belt, and the positioning targets are in a corresponding relationship with the material distribution positions; A first laser detection mechanism, wherein the first laser detection mechanism is provided on the material distribution conveyor belt; Wherein, when the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the traveling mechanism slows down and stops when the second positioning target corresponding to the target material distribution position is detected.

[0009] The multi-target material distribution belt conveyor according to the embodiment of the present invention has at least the following beneficial effects: In the multi-target material-dividing belt conveyor of this embodiment, before the material-dividing conveyor belt moves to the material-dividing position, the first laser detection mechanism passes through the first positioning target and generates a corresponding electrical signal. At this time, the walking mechanism is controlled to slow down, and then stops when the second positioning target is detected. At this time, the inertia of the material-dividing conveyor belt has been greatly reduced, so the position accuracy when stopping can be effectively improved, solving the problem of stop deviation in the traditional structure.

[0010] According to some embodiments of the present invention, the multi-target material distribution belt conveyor also includes a second laser detection mechanism arranged on the support rail. The second laser detection mechanism detects whether the material distribution conveyor belt is completely aligned with the target material distribution position after the walking mechanism stops. The walking mechanism moves forward or backward a set distance according to the detection result of the second laser detection mechanism.

[0011] According to some embodiments of the present invention, the material distribution conveyor belt is provided with a first reference target, a second reference target and a third reference target, and the first reference target, the second reference target and the third reference target are distributed side by side and equidistantly along the length direction of the main conveyor belt.

[0012] According to some embodiments of the present invention, the walking mechanism is provided with a plurality of walking wheel groups, and the walking wheel groups include: a first running wheel, wherein the rotating shaft of the first running wheel is horizontally arranged, and the first running wheel abuts against the upper end of the support rail; The second running wheel has a rotating shaft arranged vertically, and the second running wheel abuts against a side of the support track close to the main conveyor belt.

[0013] According to some embodiments of the present invention, a cam is provided on the side of the first traveling wheel close to the main conveyor belt. The cam is located on the side of the support track close to the main conveyor belt and is used to prevent the first traveling wheel from derailing in a direction away from the main conveyor belt.

[0014] According to some embodiments of the present invention, the second running wheel has a horizontal adjustment stroke along the second direction, and the running wheel assembly is provided with an elastic supporting structure acting on the second running wheel so that the second running wheel elastically abuts against the support rail.

[0015] According to some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a rail clamp, which is provided on the material distribution conveyor belt and is used to abut against the support rail for stopping and braking. The rail clamp includes: A swing arm, the swing arm being rotatably connected to the material distribution conveyor belt; A rail clamping driving unit, connected to the swing arm in a transmission manner, for controlling the rotation of the swing arm; The brake part is arranged on a side of the swing arm close to the support rail, and the brake part can abut against the support rail to brake when the swing arm rotates.

[0016] According to some embodiments of the present invention, the track clamp further includes a reduction wheel, which is rotatably arranged on the swing arm, and an elastic support portion is connected between the reduction wheel and the swing arm. During the rotation of the swing arm for braking, the reduction wheel first abuts against the support rail, using the damping effect to provide a deceleration force, and then the brake portion abuts against the support rail.

[0017] The laser positioning error compensation process according to the second embodiment of the present invention is applied to the above-mentioned multi-target material distribution belt conveyor, including: Obtaining a target material distribution position of the main conveyor belt where material distribution is required, and determining the positioning target corresponding to the target material distribution position; The material distribution conveyor belt is controlled to move at a first speed, and when the first positioning target is detected, it is decelerated to a second speed, and when the second positioning target is detected, it stops.

[0018] According to some embodiments of the present invention, after the traveling mechanism stops, it is detected whether the material distribution conveyor belt is completely aligned with the target material distribution position, and the traveling mechanism advances or retreats a set distance according to the detection result of the second laser detection mechanism.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which: Figure 1 A schematic diagram of a process flow of the present invention; Figure 2 This is a schematic diagram of the overall structural layout of the present invention; Figure 3 A schematic structural diagram of the traveling wheel set in the present invention; Figure 4 This is a structural diagram of a material distribution conveyor belt; Figure 5 It is a structural schematic diagram of the rail clamp in the present invention. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0023] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0026] Reference Figures 1 to 5, an embodiment of the present invention provides a multi-target material distribution belt conveyor, comprising: The main conveyor belt 100 extends along a first direction, and support rails 300 are provided on both sides of the main conveyor belt 100; The material distribution conveyor belt 200 is mounted on the support rail 300, and the material distribution conveyor belt 200 extends in a second direction perpendicular to the first direction. The material distribution conveyor belt 200 is provided with a traveling mechanism; Positioning targets, multiple positioning targets are provided along the length direction of the main conveyor belt 100, and the positioning targets are in a corresponding relationship with the material distribution positions; A first laser detection mechanism is provided on the material distribution conveyor belt 200; When the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the traveling mechanism slows down and stops when the second positioning target corresponding to the target material distribution position is detected.

[0027] During operation, the main conveyor belt 100 transports materials, and the sub-material conveyor belt 200 can be moved to any position in the length direction of the main conveyor belt 100 as needed, transferring the materials from the main conveyor belt 100 to the sub-material conveyor belt 200, and conveying them along a second direction perpendicular to the main conveyor belt 100 to achieve material separation.

[0028] Before the material-dividing conveyor belt 200 moves to the material-dividing position, the first laser detection mechanism passes the first positioning target and generates a corresponding electrical signal. At this time, the walking mechanism is controlled to slow down, and then stops when the second positioning target is detected. At this time, the inertia of the material-dividing conveyor belt 200 has been reduced a lot, so it can effectively improve the position accuracy when stopping and solve the problem of stop deviation in the traditional structure.

[0029] In some embodiments of the present invention, the multi-target material distribution belt conveyor also includes a second laser detection mechanism arranged on the support rail 300. The second laser detection mechanism detects whether the material distribution conveyor belt 200 is completely aligned with the target material distribution position after the walking mechanism stops. The walking mechanism moves forward or backward a set distance according to the detection result of the second laser detection mechanism.

[0030] This embodiment further determines the stopping accuracy of the material distribution conveyor belt 200 by setting a second laser detection mechanism. When there is a slight deviation between the material distribution conveyor belt 200 and the target material distribution position, the position accuracy of the material distribution conveyor belt 200 can be further corrected to avoid position deviation.

[0031] In some embodiments of the present invention, the material distribution conveyor belt 200 is provided with a first reference target, a second reference target and a third reference target, and the first reference target, the second reference target and the third reference target are distributed side by side and equidistantly along the length direction of the main conveyor belt 100.

[0032] The first reference target, the second reference target, and the third reference target are defined as being arranged front to back. When the material distribution conveyor belt 200 moves from front to back to the target material distribution position, when in a stopped state: If the second laser detection mechanism corresponds to the first reference target, the material distribution conveyor belt 200 continues to move backward for a set distance, and the distance value is the distance between the first reference target and the second reference target; If the second laser detection mechanism corresponds to the second reference target, it is determined that the stop position meets the accuracy; If the second detection mechanism corresponds to the third reference target, the material distribution conveyor belt 200 retreats forward by a set distance, and the distance value is the distance between the second reference target and the third reference target.

[0033] If the material distribution conveyor belt 200 moves from the back to the front to the target material distribution position, the judgment principle is the same as the above steps, except that the moving direction relative to the front-back direction is opposite.

[0034] In some embodiments of the present invention, the walking mechanism is provided with a plurality of walking wheel groups 400, and the walking wheel groups 400 include: A first running wheel 401, the rotating shaft of the first running wheel 401 is arranged horizontally, and the first running wheel 401 abuts against the upper end of the support rail 300; The second running wheel 402 has a rotating shaft arranged vertically, and the second running wheel 402 abuts against a side of the support rail 300 close to the main conveyor belt 100 .

[0035] During operation, the feed conveyor belt 200 is supported on the support rail 300 by the first running wheel 401. At the same time, the second running wheel 402 abuts against the inner side of the support rail 300 to prevent the feed conveyor belt 200 from deviating, effectively improving running accuracy. Compared with traditional track wheel designs, this eliminates the left and right gaps between the running wheels and the rail, which helps improve parking accuracy.

[0036] In some embodiments of the present invention, a cam 403 is provided on the side of the first traveling wheel 401 close to the main conveyor belt 100. The cam 403 is located on the side of the support rail 300 close to the main conveyor belt 100 and is used to prevent the first traveling wheel 401 from derailing in a direction away from the main conveyor belt 100.

[0037] It is understood that the cam 403 is a protruding portion on the circumferential surface of the first running wheel 401. Under normal conditions, the cam 403 is located inside the support rail 300, which can effectively prevent derailment. The cam 403 does not contact the support rail 300 under normal conditions to avoid excessive wear.

[0038] In some embodiments of the present invention, the second walking wheel 402 has a horizontal adjustment stroke along the second direction, and the walking wheel assembly 400 is provided with an elastic supporting structure acting on the second walking wheel 402 so that the second walking wheel 402 elastically abuts the support rail 300.

[0039] With the structural setting of this embodiment, although the second walking wheel 402 abuts the side wall of the support rail 300, due to the action of the elastic supporting structure, the second walking wheel 402 can be telescopically adjusted, so that the walking wheel group 400 and the support rail 300 are not completely limited in the horizontal direction. Therefore, while improving the walking accuracy, it can avoid excessive wear caused by excessive limitation.

[0040] The elastic supporting structure can be a spring. Specifically, the running wheel assembly 400 is provided with a base, and the first running wheel 401 is rotatably mounted on the base. The second running wheel 402 is provided with a mounting seat, that is, the second running wheel 402 is rotatably mounted on the mounting seat. The mounting seat is slidably mounted on the base, and a spring is provided between the mounting seat and the mounting seat. This allows the horizontal adjustment of the second running wheel 402.

[0041] In some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a rail clamp, which is provided on the material distribution conveyor belt 200 and is used to abut against the support rail 300 for stopping and braking. The rail clamp includes: A swing arm 404, the swing arm 404 is rotatably connected to the material distribution conveyor belt 200; The rail clamping drive unit is connected to the swing arm 404 and is used to control the rotation of the swing arm 404; The brake portion 406 is disposed on a side of the swing arm 404 close to the support rail 300 . The brake portion 406 can abut against the support rail 300 to brake when the swing arm 404 rotates.

[0042] When the first laser detection mechanism detects the second positioning target and needs to stop moving, the rail clamping drive unit drives the swing arm 404 to rotate toward the support rail 300, so that the brake unit 406 abuts against the support rail 300 to complete braking.

[0043] The end of the brake portion 406 that contacts the support rail 300 is made of rubber to improve friction and life.

[0044] In some embodiments of the present invention, the track clamp also includes a reduction wheel 405, which is rotatably arranged on the swing arm 404, and an elastic support part is connected between the reduction wheel 405 and the swing arm 404. During the process of the swing arm 404 rotating for braking, the reduction wheel 405 first abuts against the support rail 300, using the damping effect to provide a deceleration force, and then the brake part 406 abuts against the support rail 300.

[0045] The reduction wheel 405 adopts a damping wheel structure, for example, a structure with high friction is set at its rotating shaft instead of a bearing that reduces friction, so as to increase the friction during walking. It can also be set with reference to the reduction structure in the prior art, which will not be described in detail here.

[0046] During braking, the reduction wheel 405 is first used to abut against the support rail 300 to decelerate the material distribution conveyor belt 200, and then the brake part 406 is used to abut against the brake, which can improve the stability at the docking position and further reduce the walking inertia of the material distribution conveyor belt 200.

[0047] In addition, the elastic support part between the reduction wheel 405 and the swing arm 404 can be set with reference to the second walking wheel 402, that is, a spring is used to keep the reduction wheel 405 against the support rail 300 before the brake part 406. When the swing arm 404 continues to rotate, the reduction wheel 405 can be displaced relative to the swing arm 404 to avoid interference.

[0048] It is understood that since the material distribution conveyor belt 200 can move from front to back or from back to front, three positioning targets need to be set for each material distribution position. The central positioning target is aligned with the material distribution position, and the positioning targets on both sides are equidistantly distributed on both sides. In this way, whether the movement is from front to back or from back to front, the first laser detection mechanism can perform the judgment operation.

[0049] It can be understood that the first laser detection mechanism, the second laser detection mechanism and the corresponding detection object can adopt a laser radiation structure design or a laser reflection or laser on-off structure design. The specific details can be referred to the relevant existing technical settings and will not be described in detail here.

[0050] Combine Figure 1 The embodiment of the present invention further proposes a laser positioning error compensation process, which is applied to the above-mentioned multi-target material distribution belt conveyor, including: Obtaining a target material distribution position where the main conveyor belt 100 needs to distribute material, and determining a positioning target corresponding to the target material distribution position; The material distribution conveyor belt 200 is controlled to move at a first speed, and when the first positioning target is detected, it is decelerated to a second speed, and when the second positioning target is detected, it stops.

[0051] And after the traveling mechanism stops, it detects whether the material distribution conveyor belt 200 is completely aligned with the target material distribution position, and the traveling mechanism moves forward or backward by a set distance according to the detection result of the second laser detection mechanism.

[0052] When the first positioning target is detected, the reduction wheel 405 is controlled to abut the support rail 300. When the second positioning target is detected, the brake unit 406 is controlled to abut the support rail 300. Since the swing arm 404 has a certain swing amplitude, the reduction wheel 405 is controlled to abut the support rail 300 first. At this time, the distance between the brake unit 406 and the support rail 300 is reduced, which can improve the timeliness of braking when braking.

[0053] The first speed and the second speed can be flexibly set as needed and are not specifically limited here.

[0054] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A multi-target material distribution belt conveyor, characterized in that: include: A main conveyor belt extending in a first direction, with support rails provided on both sides of the main conveyor belt; A material distribution conveyor belt, the material distribution conveyor belt is mounted on the support rail, the material distribution conveyor belt extends along a second direction perpendicular to the first direction, and the material distribution conveyor belt is provided with a walking mechanism; Positioning targets, a plurality of which are provided along the length direction of the main conveyor belt, and the positioning targets are in a corresponding relationship with the material distribution positions; A first laser detection mechanism, wherein the first laser detection mechanism is provided on the material distribution conveyor belt; Wherein, when the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the traveling mechanism slows down and stops when the second positioning target corresponding to the target material distribution position is detected.

2. The multi-purpose material distribution belt conveyor according to claim 1, characterized in that: The multi-target material distribution belt conveyor also includes a second laser detection mechanism arranged on the support rail. The second laser detection mechanism detects whether the material distribution conveyor belt is completely aligned with the target material distribution position after the walking mechanism stops. The walking mechanism moves forward or backward a set distance according to the detection result of the second laser detection mechanism.

3. The multi-purpose material distribution belt conveyor according to claim 2, characterized in that: The material distribution conveyor belt is provided with a first reference target, a second reference target and a third reference target, and the first reference target, the second reference target and the third reference target are distributed side by side and equidistantly along the length direction of the main conveyor belt.

4. The multi-purpose material distribution belt conveyor according to claim 1, characterized in that: The walking mechanism is provided with a plurality of walking wheel groups, and the walking wheel groups include: a first running wheel, wherein the rotating shaft of the first running wheel is horizontally arranged, and the first running wheel abuts against the upper end of the support rail; The second running wheel has a rotating shaft arranged vertically, and the second running wheel abuts against a side of the support track close to the main conveyor belt.

5. The multi-purpose material distribution belt conveyor according to claim 4, characterized in that: A cam is provided on the side of the first traveling wheel close to the main conveyor belt. The cam is located on the side of the support track close to the main conveyor belt and is used to prevent the first traveling wheel from derailing in a direction away from the main conveyor belt.

6. The multi-purpose material distribution belt conveyor according to claim 4, characterized in that: The second running wheel has a horizontal adjustment stroke along the second direction, and the running wheel assembly is provided with an elastic supporting structure acting on the second running wheel, so that the second running wheel elastically abuts against the support rail.

7. The multi-purpose material distribution belt conveyor according to claim 1, characterized in that: The multi-target material distribution belt conveyor further includes a rail clamp, which is provided on the material distribution conveyor belt and is used to abut against the support rail for stopping and braking. The rail clamp includes: A swing arm, the swing arm being rotatably connected to the material distribution conveyor belt; A rail clamping driving unit, connected to the swing arm in a transmission manner, for controlling the rotation of the swing arm; The brake part is arranged on a side of the swing arm close to the support rail, and the brake part can abut against the support rail to brake when the swing arm rotates.

8. The multi-purpose material distribution belt conveyor according to claim 7, characterized in that: The rail clamp also includes a reduction wheel, which is rotatably arranged on the swing arm, and an elastic support part is connected between the reduction wheel and the swing arm. During the process of the swing arm rotating for braking, the reduction wheel first abuts against the support rail, using the damping effect to provide a deceleration force, and then the brake part abuts against the support rail.

9. A laser positioning error compensation process applied to the multi-target material distribution belt conveyor according to claim 2, characterized in that: include: Obtaining a target material distribution position of the main conveyor belt where material distribution is required, and determining the positioning target corresponding to the target material distribution position; The material distribution conveyor belt is controlled to move at a first speed, and when the first positioning target is detected, it is decelerated to a second speed, and when the second positioning target is detected, it stops.

10. The laser positioning error compensation process according to claim 9, characterized in that: After the traveling mechanism stops, it is detected whether the material distribution conveyor belt is completely aligned with the target material distribution position, and the traveling mechanism moves forward or backward a set distance according to the detection result of the second laser detection mechanism.

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