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

Abstract

The application provides a multi-target material distribution belt conveyor and a laser positioning error compensation process, and belongs to the technical field of belt conveying, and comprises a main conveying belt, a material distribution conveying belt, positioning targets and a first laser detection mechanism; when the first laser detection mechanism detects a first positioning target corresponding to a target material distribution position, the walking mechanism travels at a reduced speed, and stops when a second positioning target corresponding to the target material distribution position is detected. Before the material distribution conveying belt travels to the material distribution position, the first laser detection mechanism passes through the first positioning target to generate a corresponding electrical signal; at this time, the walking mechanism is controlled to travel at a reduced speed, and then stops when the second positioning target is detected; at this time, the inertia of the material distribution conveying belt has been greatly reduced, and therefore the accuracy of the position when stopping can be effectively improved, and the position deviation problem in the traditional structure is solved.

Description

Technical Field

[0001] This invention belongs to the field of belt conveyor technology, specifically relating to a multi-target material distribution belt conveyor and a laser positioning error compensation process. Background Technology

[0002] Belt conveyors are commonly used material conveying equipment. They primarily use long, continuously running belts to transport materials from one place to another. This type of equipment can be used for horizontal, inclined, and vertical conveying, and is particularly suitable for conveying powdery, granular, and small lump materials, such as cement, grain, fertilizer, sand, coke, coal powder, ash, concrete, and sawdust.

[0003] Belt conveyors mainly consist of idlers, a drive unit, a tensioning device, and a frame. Their working principle involves the drive unit driving a transmission belt (belt) to transfer materials with the help of the idlers. Belt conveyors offer advantages such as simple structure, low cost, convenient maintenance, large conveying capacity, long conveying distance, stable operation, strong adaptability, high load capacity, low noise pollution, and easy installation.

[0004] A material distribution belt conveyor is a specially designed belt conveyor whose main function is to distribute materials during the conveying process. This equipment typically includes a main conveyor belt and several auxiliary material distribution devices, capable of distributing materials to multiple different outlets or hoppers.

[0005] In existing technologies, material distribution belt conveyors experience positional deviations each time they stop, resulting in material discharge position deviations. Over time, these deviations increase, affecting production operations. Summary of the Invention

[0006] The present invention aims to at least solve one of the aforementioned 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 stopping accuracy and solve the deviation problem in traditional structures.

[0007] Secondly, the present invention provides a laser positioning error compensation process for the above-mentioned multi-target material distribution belt conveyor.

[0008] A multi-target material distribution belt conveyor according to a first aspect embodiment of the present invention includes: A main conveyor belt extends along a first direction, and support rails are provided on both sides of the main conveyor belt; The material distribution conveyor belt is mounted on the support rail and extends along a second direction perpendicular to the first direction. The material distribution conveyor belt is equipped with a traveling mechanism. The positioning targets are arranged in multiple ways along the length of the main conveyor belt, and the positioning targets correspond to the material distribution positions. A first laser detection mechanism is disposed on the material distribution conveyor belt; Specifically, when the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the walking mechanism decelerates and stops when it detects the second positioning target corresponding to the target material distribution position.

[0009] The multi-target material distribution belt conveyor according to embodiments of the present invention has at least the following beneficial effects: In this embodiment of the multi-target material distribution belt conveyor, before the material distribution conveyor belt reaches the material distribution 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 decelerate, and then stops when the second positioning target is detected. At this time, the inertia of the material distribution conveyor belt has been greatly reduced, so the accuracy of the position when stopping can be effectively improved, and the problem of stopping deviation in the traditional structure can be solved.

[0010] According to some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a second laser detection mechanism disposed on the support track. The second laser detection mechanism detects whether the material distribution conveyor belt is completely aligned with the target material distribution position after the traveling mechanism stops. The traveling mechanism advances or retreats 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, the first reference target, the second reference target and the third reference target being distributed side by side at equal intervals 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 sets, the walking wheel sets comprising: The first traveling wheel has a horizontally set axle and abuts against the upper end of the support track. The second traveling wheel has a vertically arranged axle and abuts against the side of the support track near 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 near the main conveyor belt, the cam being located on the side of the support rail near the main conveyor belt, for preventing 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 traveling wheel has a horizontally adjustable stroke along the second direction, and the traveling wheel assembly is provided with an elastic support structure acting on the second traveling wheel so that the second traveling wheel elastically abuts against the support track.

[0015] According to some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a rail clamp, which is disposed 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, which is rotatably connected to the material distribution conveyor belt; The rail clamping drive unit is connected to the swing arm and is used to control the rotation of the swing arm; A braking unit is provided on the side of the swing arm near the support rail, and the braking unit can abut against the support rail to brake when the swing arm rotates.

[0016] According to some embodiments of the present invention, the rail clamp further includes a reduction wheel, which is rotatably mounted on the swing arm, and an elastic support is connected between the reduction wheel and the swing arm. During the braking process of the swing arm rotation, the reduction wheel first abuts against the support rail and provides a deceleration force by means of damping, and then the braking part abuts against the support rail.

[0017] According to a second aspect of the present invention, a laser positioning error compensation process is applied to the above-mentioned multi-target material distribution belt conveyor, comprising: Obtain the target material distribution position where the main conveyor belt needs to be divided, and determine the positioning target corresponding to the target material distribution position; The material conveyor belt is controlled to travel at a first speed. When the first positioning target is detected, it slows down to a second speed and stops when the second positioning target is detected.

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

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and some of these additional aspects and advantages will become apparent from the description or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a process flow according to the present invention; Figure 2 This is a schematic diagram of an overall structural layout in this invention; Figure 3 This is a schematic diagram of one structure of the walking wheel assembly in this invention; Figure 4 This is a schematic diagram of a material distribution conveyor belt. Figure 5 This is a schematic diagram of one structure of the rail clamp in this invention. Detailed Implementation

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

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

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

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

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

[0026] Reference Figures 1 to 5The 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 extends along a second direction perpendicular to the first direction. The material distribution conveyor belt 200 is equipped with a traveling mechanism. Positioning targets are set along the length of the main conveyor belt 100, and the positioning targets correspond to the material distribution positions. The first laser detection mechanism is installed on the material distribution conveyor belt 200; Specifically, when the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the walking mechanism decelerates and stops when it detects the second positioning target corresponding to the target material distribution position.

[0027] During operation, the main conveyor belt 100 transports materials, and the distribution conveyor belt 200 can move to any position along the length of the main conveyor belt 100 as needed to transfer materials from the main conveyor belt 100 to the distribution conveyor belt 200, and then transport them along a second direction perpendicular to the main conveyor belt 100 to achieve material distribution.

[0028] Before the material distribution conveyor belt 200 travels to the material distribution position, the first laser detection mechanism passes the first positioning target and generates a corresponding electrical signal. At this time, the traveling mechanism is controlled to decelerate, and then stops when the second positioning target is detected. At this time, the inertia of the material distribution conveyor belt 200 has been greatly reduced, so the accuracy of the position when stopping can be effectively improved, and the problem of stopping deviation in traditional structures can be solved.

[0029] In some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a second laser detection mechanism disposed on the support track 300. After the traveling mechanism stops, the second laser detection mechanism detects whether the material distribution conveyor belt 200 is completely aligned with the target material distribution position. The traveling mechanism advances or retreats a set distance according to the detection result of the second laser detection mechanism.

[0030] This embodiment uses a second laser detection mechanism to further determine the stopping accuracy of the material distribution conveyor belt 200. If there is a slight deviation between the material distribution conveyor belt 200 and the target material distribution position, the positional accuracy of the material distribution conveyor belt 200 can be further corrected to avoid positional 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, which are distributed side by side at equal intervals along the length of the main conveyor belt 100.

[0032] Define the first, second, and third reference targets as arranged in a front-to-back configuration. When the material distribution conveyor belt 200 moves from front to back to the target material distribution position, in the stopped state: If the second laser detection mechanism corresponds to the first reference target, the material conveyor belt 200 continues to travel backward a set distance, the distance being the distance between the first and second reference targets; If the second laser detection mechanism corresponds to the second reference target, then the stopping position is determined to meet the accuracy requirements; If the second detection mechanism corresponds to the third reference target, the material distribution conveyor belt 200 will move forward and back a set distance, the distance being the distance between the second and third reference targets.

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

[0034] In some embodiments of the present invention, the walking mechanism is provided with a plurality of walking wheel sets 400, the walking wheel sets 400 including: The first traveling wheel 401 has a horizontally set axle and abuts against the upper end of the support rail 300. The second traveling wheel 402 has its shaft vertically set and abuts against the side of the support rail 300 near the main conveyor belt 100.

[0035] During operation, the material distribution conveyor belt 200 travels on the support rail 300 supported by the first traveling wheel 401. Simultaneously, the second traveling wheel 402 engages and limits movement on the inner side of the support rail 300, preventing the conveyor belt 200 from deviating and effectively improving travel accuracy. Compared to traditional track wheel designs, this eliminates the lateral gap between the traveling wheels and the rail, which helps improve positioning accuracy.

[0036] In some embodiments of the present invention, a cam 403 is provided on the side of the first traveling wheel 401 near the main conveyor belt 100. The cam 403 is located on the side of the support rail 300 near 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] Understandably, the cam 403 is the protruding part on the circumference of the first traveling 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 traveling wheel 402 has a horizontally adjustable stroke along a second direction, and the traveling wheel assembly 400 is provided with an elastic support structure acting on the second traveling wheel 402 so that the second traveling wheel 402 elastically abuts against the support track 300.

[0039] With the structural configuration of this embodiment, although the second traveling wheel 402 abuts against the side wall of the support rail 300, the second traveling wheel 402 can be extended and adjusted due to the elastic support structure. This means that the traveling wheel set 400 and the support rail 300 are not completely locked in the horizontal direction. Therefore, while improving the traveling accuracy, it can avoid excessive wear caused by excessive tightness in the limit.

[0040] The elastic support structure can be a spring. Specifically, the traveling wheel assembly 400 is equipped with a base, and the first traveling wheel 401 is rotatably mounted on the base. The second traveling wheel 402 is equipped with a mounting seat, that is, the second traveling 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 two for support. This allows for the horizontal adjustment of the second traveling wheel 402.

[0041] In some embodiments of the present invention, the multi-target material distribution belt conveyor further includes a rail clamp, which is disposed 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: Swing arm 404 is rotatably connected to the material distribution conveyor belt 200; The rail drive unit is connected to the swing arm 404 for controlling the rotation of the swing arm 404; Brake 406 is provided on the side of the swing arm 404 near the support rail 300. Brake 406 can brake by abutting the support rail 300 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 towards the support rail 300, so that the brake unit 406 abuts against the support rail 300 to complete the braking.

[0043] The brake part 406 has a rubber structure at one end that abuts against the support rail 300 to improve friction and lifespan.

[0044] In some embodiments of the present invention, the rail clamp further includes a reduction wheel 405, which is rotatably mounted on the swing arm 404, and an elastic support is connected between the reduction wheel 405 and the swing arm 404. During the braking process of the swing arm 404 rotating, the reduction wheel 405 first abuts against the support rail 300 and provides a deceleration force by means of damping. Then the brake part 406 abuts against the support rail 300.

[0045] The reduction wheel 405 adopts a damping wheel structure, such as setting a structure with high friction at its shaft instead of setting a bearing that reduces friction, in order to improve the friction when 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 first abuts against the support rail 300 to reduce the speed of the material distribution conveyor belt 200, and then the brake part 406 abuts against the brake, which can improve the stability when stopping and further reduce the inertia of the material distribution conveyor belt 200.

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

[0048] Understandably, 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 middle positioning target is aligned with the material distribution position, while the two side positioning targets are equidistantly distributed on both sides. In this way, the first laser detection mechanism can perform the judgment operation regardless of whether the movement is from front to back or from back to front.

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

[0050] Combination Figure 1 The embodiments of the present invention also propose a laser positioning error compensation process, applied to the above-mentioned multi-target material distribution belt conveyor, including: Obtain the target material distribution position where the main conveyor belt 100 needs to be divided, and determine the positioning target corresponding to the target material distribution position; The material distribution conveyor belt 200 is controlled to travel at the first speed. When the first positioning target is detected, it decelerates to the second speed and stops when the second positioning target is detected.

[0051] Furthermore, after the traveling mechanism stops, it checks whether the material distribution conveyor belt 200 is completely aligned with the target material distribution position. The traveling mechanism advances or retreats a set distance based on the detection result of the second laser detection mechanism.

[0052] When the first positioning target is detected, the deceleration wheel 405 is controlled to abut against the support rail 300. When the second positioning target is detected, the brake unit 406 is controlled to abut against the support rail 300. Since the swing arm 404 has a certain swing amplitude, controlling the deceleration wheel 405 to abut against the support rail 300 first reduces the distance between the brake unit 406 and the support rail 300, thus improving the timeliness of braking.

[0053] The first and second speeds can be set flexibly as needed, and no specific limitations are made here.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A multi-target material distribution belt conveyor, characterized in that, include: A main conveyor belt extends along a first direction, and support rails are provided on both sides of the main conveyor belt; The material distribution conveyor belt is mounted on the support rail and extends along a second direction perpendicular to the first direction. The material distribution conveyor belt is equipped with a traveling mechanism. The positioning targets are arranged in multiple ways along the length of the main conveyor belt, and the positioning targets correspond to the material distribution positions. A first laser detection mechanism is disposed on the material distribution conveyor belt; When the first laser detection mechanism detects the first positioning target corresponding to the target material distribution position, the walking mechanism decelerates and stops when it detects the second positioning target corresponding to the target material distribution position. The multi-target material distribution belt conveyor also includes a second laser detection mechanism disposed 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 traveling mechanism stops. The traveling mechanism advances or retreats a set distance according to the detection result of the second laser detection mechanism. The material distribution conveyor belt is equipped with a first reference target, a second reference target, and a third reference target. These three reference targets are equidistantly distributed along the length of the main conveyor belt. When the material distribution conveyor belt moves from front to back to the target material distribution position, and when the conveyor belt stops: if the second laser detection mechanism corresponds to the first reference target, the material distribution conveyor belt continues to move backward a predetermined distance, the distance being the distance between the first and second reference targets; if the second laser detection mechanism corresponds to the second reference target, the stopping position is determined to meet the required accuracy; if the second laser detection mechanism corresponds to the third reference target, the material distribution conveyor belt retracts forward a predetermined distance, the distance being the distance between the second and third reference targets. The multi-target material distribution belt conveyor also includes a rail clamp, which is disposed on the material distribution conveyor belt and used to stop and brake by abutting against the support rail. The rail clamp includes: a swing arm, which is rotatably connected to the material distribution conveyor belt; a rail clamping drive unit, which is drivenly connected to the swing arm and used to control the rotation of the swing arm; a brake unit, which is disposed on the side of the swing arm near the support rail and can abut against the support rail to brake when the swing arm rotates; and a reduction wheel, which is rotatably disposed on the swing arm and is connected to the swing arm by an elastic support unit. During the braking process of the swing arm rotation, the reduction wheel first abuts against the support rail, using damping to provide a deceleration force, and then the brake unit abuts against the support rail.

2. The multi-target material distribution belt conveyor according to claim 1, characterized in that, The walking mechanism is provided with multiple sets of walking wheels, and the sets of walking wheels include: The first traveling wheel has a horizontally set axle and abuts against the upper end of the support track. The second traveling wheel has a vertically arranged axle and abuts against the side of the support track near the main conveyor belt.

3. The multi-target material distribution belt conveyor according to claim 2, characterized in that, A cam is provided on the side of the first traveling wheel near the main conveyor belt. The cam is located on the side of the support rail near the main conveyor belt and is used to prevent the first traveling wheel from derailing in a direction away from the main conveyor belt.

4. The multi-target material distribution belt conveyor according to claim 2, characterized in that, The second traveling wheel has a horizontally adjustable stroke along the second direction, and the traveling wheel assembly is provided with an elastic support structure acting on the second traveling wheel so that the second traveling wheel elastically abuts against the support track.

5. A laser positioning error compensation process applied to the multi-target material distribution belt conveyor as described in claim 1, characterized in that, include: Obtain the target material distribution position where the main conveyor belt needs to be divided, and determine the positioning target corresponding to the target material distribution position; The material conveyor belt is controlled to travel at a first speed. When the first positioning target is detected, it slows down to a second speed and stops when the second positioning target is detected.

6. The laser positioning error compensation process according to claim 5, characterized in that, After the walking mechanism stops, it is detected whether the material distribution conveyor belt is completely aligned with the target material distribution position. The walking mechanism moves forward or backward a set distance according to the detection result of the second laser detection mechanism.

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