Slipping detection device, cantilever belt conveyor and stacker-reclaimer

Abstract

The utility model provides a slip detection device, a cantilever belt conveyor and a stacker-reclaimer. The slip detection device comprises an induction part, a detection assembly and a controller, and the controller is electrically connected with the detection assembly; the sensing piece is used for being installed on a detected roller and is driven by the detected roller to rotate; the detection assembly is arranged on the peripheral side of the detected roller, a detection point of the detection assembly faces the side where the induction piece is located, and the detection assembly is used for detecting the induction piece passing through the detection point and outputting an induction signal; the detection assembly is installed on the peripheral side of the detected roller through a support, a position adjusting assembly is arranged on the support, the detection assembly is connected with the position adjusting assembly, and the position adjusting assembly is used for driving the detection assembly to be relatively close to or away from the induction part in the axial direction and the vertical direction of the detected roller. The position of the detection assembly relative to the induction piece can be conveniently adjusted, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of conveyor belt detection, in particular to a slip detection device, a cantilever belt conveyor and a stacker-reclaimer. Background Art

[0002] Currently, the prior art stacker-reclaimer slippage detection device is to install a sensing element on the driving roller and the driven roller, respectively, and install a sensing switch on the sides of the driving roller and the driven roller. The sensing switch collects the pulse counts of the two rollers in the same time period and compares them. If the difference in the pulse counts exceeds a specified absolute value, an alarm is triggered. For example, Chinese patent "CN106429302A", entitled "A device for preventing belt slippage of a belt conveyor", discloses: comprising: a first patch installed on the driving roller of the belt conveyor, a first proximity switch installed on the outer side of the driving roller, a second patch installed on the driven roller of the belt conveyor, a second proximity switch installed on the outer side of the driven roller, and a PLC control system. The first and second proximity switches are electrically connected to the PLC control system. The PLC control system detects the real-time pulse frequency of the first proximity switch and the real-time pulse frequency of the second proximity switch, compares the difference between the pulse frequencies, and detects whether there is slippage based on the difference.

[0003] The slip detection device has the following technical problems: on the one hand, it is necessary to set induction switches and detection components on the circumference of the active roller and the driven roller, which has a complex structure. In addition, because the PLC control system accumulates and collects the pulses of the proximity switches within a program scanning cycle, it is easy to miss the pulses sensed by the switches, and the pulse data are not fully included in the PLC program, resulting in errors in the pulse data collected by the two proximity switches, which is prone to misjudgment. On the other hand, the position of the detection component relative to the measured roller or the active roller is difficult to adjust, and the detection component needs to be completely disassembled and reinstalled, and the operation method is complicated. Utility Model Content

[0004] Based on this, it is necessary to provide a slip detection device, a cantilever belt conveyor and a stacker-reclaimer to address the above-mentioned technical problems.

[0005] In a first aspect, the present disclosure provides a slip detection device, comprising: a sensing element, a detection component, and a controller, wherein the controller is electrically connected to the detection component;

[0006] The sensing element is used to be installed on the radial end surface of the measured roller and rotates under the drive of the measured roller;

[0007] The detection assembly is arranged on the circumference of the detected roller, with the detection direction of the detection assembly facing the radial end surface of the detected roller on which the sensing element is arranged, and the detection assembly is used to detect the sensing element passing through the detection point and output a sensing signal;

[0008] The detection component is installed on the circumferential side of the measured roller through a bracket, and a position adjustment component is provided on the bracket. The detection component is connected to the position adjustment component, and the position adjustment component is used to drive the detection component to be relatively close to or away from the sensing component along the axial and vertical directions of the measured roller.

[0009] In one embodiment, the detection component is a high-frequency pulse switch, which is used to detect the sensing element and output a pulse signal. The controller is used to obtain the number of pulse signals output by the high-frequency pulse switch in at least two preset time periods, and detect whether the difference between the number of pulse signals output in the two preset time periods is greater than a preset threshold.

[0010] In one embodiment, the number of the sensing elements is set to at least two, and the sensing elements are evenly distributed on the radial end surface of the measured roller.

[0011] In one embodiment, there are four sensing elements, and the angles between the lines formed by the sensing elements and the center of the radial end surface of the measured roller are 90°.

[0012] In one embodiment, the position adjustment assembly includes a mounting seat, an adjustment rod, and two adjustment nuts passed through the adjustment rod. The mounting seat is provided with an adjustment slot along the vertical direction for the adjustment rod to pass through. The first end of the adjustment rod is connected to the detection assembly, and the second end of the adjustment rod slides in the adjustment slot. The two adjustment nuts are located on opposite sides of the adjustment slot to lock the adjustment rod to the adjustment slot.

[0013] In one embodiment, an alarm component is further included, which is electrically connected to the controller. The controller is used to control the alarm component to output an alarm signal when the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold.

[0014] In one embodiment, the alarm component is at least one of an indicator light, a buzzer, an audible and visual alarm, and a speaker.

[0015] In the second aspect, the present disclosure provides a cantilever belt conveyor, comprising a driving source, a driving roller, a driven roller, a belt and the slip detection device as described above, wherein the driving source is drivingly connected to the driving roller, the driving roller and the driven roller are connected to the belt, and the belt is sleeved on the driving roller and the driven roller; the slip detection device is used to detect slippage of the driven roller, the sensing element is installed on the driven roller, and the detection component is arranged on the circumferential side of the driven roller.

[0016] In a third aspect, the present disclosure provides a stacker-reclaimer comprising the cantilever belt conveyor as described above.

[0017] The above-mentioned slip detection device, cantilever belt conveyor and stacker-reclaimer can realize slip detection by only setting a group of sensors and detection switches on the side of the tested roller, which can be the active roller or the passive roller, instead of comparing with other tested rollers. This solves the problem of false alarms caused by loss of counts when testing two tested rollers, improves the detection accuracy, reduces the probability of false fault alarms, and greatly improves the stability and reliability of equipment operation; and the detection component is installed on the bracket through the position adjustment component, and the position of the detection component relative to the sensor can be easily adjusted, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a slip detection device in one embodiment;

[0019] Figure 2 Schematic diagram of the structure of a position adjustment component in one embodiment. Description of the drawings:

[0021] 100-sensing part; 200-detection component; 300-tested roller; 400-bracket; 500-position adjustment component; 510-mounting seat; 520-adjusting rod; 530-adjusting nut; 511-adjusting slot. DETAILED DESCRIPTION

[0022] To facilitate understanding of this application and to make the above-mentioned objectives, features, and advantages of this application more readily apparent, the following detailed description of specific embodiments of this application is provided in conjunction with the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of this application, and the accompanying drawings illustrate preferred embodiments of this application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of this application. This application can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of this application. Therefore, this application is not limited to the specific embodiments disclosed below. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout this description, "a plurality" means at least two, such as two or three, unless otherwise specifically defined. Throughout this description, "several" means at least one, such as one or two, unless otherwise specifically defined. It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element centered at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein are for the purpose of describing specific implementation methods only and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Example 1

[0024] In this embodiment, refer to Figures 1 to 2 As shown, a slip detection device is provided, comprising: a sensing element 100, a detection component 200 and a controller, wherein the controller is electrically connected to the detection component 200;

[0025] The sensing element 100 is used to be mounted on the radial end surface of the measured roller 300 and rotates under the drive of the measured roller 300;

[0026] The detection assembly 200 is disposed on the circumference of the detected roller 300. The detection direction of the detection assembly 200 is toward the radial end surface of the detected roller 300 on which the sensing element 100 is disposed. The detection assembly 200 is used to detect the sensing element passing through the detection point and output a sensing signal.

[0027] The detection component 200 is installed on the circumferential side of the measured roller 300 through the bracket 400. The bracket 400 is provided with a position adjustment component 500. The detection component 200 is connected to the position adjustment component 500. The position adjustment component 500 is used to drive the detection component 200 to be relatively close to or away from the sensing component 100 along the axial and vertical directions of the measured roller 300.

[0028] In this embodiment, the position adjustment component 500 on the bracket 400 drives the detection component 200 to be relatively close to or away from the sensing component 100 along the axial and vertical directions of the detected roller 300, thereby adjusting the distance of the detection component 200 relative to the sensing component 100 and the same horizontal position, ensuring that the detection point of the detection component 200 is at the same horizontal position as the sensing component 100, and the horizontal distance of the detection component 200 relative to the sensing component 100 is within the sensing distance of the detection component 200.

[0029] In one embodiment, the controller is configured to obtain the number of sensing signals output by the detection component 200 within at least two preset time periods, and detect whether a difference between the number of sensing signals output within the two preset time periods is greater than a preset threshold.

[0030] The sensing element 100 rotates driven by the roller 300 being tested. Each time the sensing element 100 passes a detection point of the detection assembly 200, the detection assembly 200 detects the sensing element 100 and outputs a sensing signal. When the roller 300 being tested runs at a constant speed, the number of sensing signals output by the detection assembly 200 within a preset time period is within a preset range of a standard value. When the running speed of the roller 300 being tested changes, the number of sensing signals output by the detection assembly 200 within the preset time period will vary. A controller is electrically connected to the detection assembly 200 and is used to obtain the sensing signal and compare the number of sensing signals obtained within at least two preset time periods. If the difference in the number of sensing signals obtained within the two preset time periods is greater than a preset threshold, it indicates that the roller 300 being tested is slipping. This slip detection device has a simple structure, is stable and reliable, and can promptly detect the operating status of the roller being tested to improve the accuracy of slip detection.

[0031] Prior art stacker-reclaimer slippage detection devices employ sensors installed on both the active and passive rollers, and sensors installed around the active and passive rollers. The sensors collect the pulse counts of the two rollers within the same time period and compare them. If the difference in the pulse counts exceeds a specified absolute value, an alarm is triggered. For example, Chinese patent CN106429302A, entitled "A device for preventing belt slippage in a belt conveyor," discloses a device comprising a first patch mounted on the active pulley of the belt conveyor, a first proximity switch mounted on the outer side of the active pulley, a second patch mounted on the passive pulley of the belt conveyor, a second proximity switch mounted on the outer side of the passive pulley, and a PLC control system. The first and second proximity switches are electrically connected to the PLC control system. The PLC control system detects the real-time pulse frequency of the first proximity switch and the real-time pulse frequency of the second proximity switch, compares the difference in the pulse frequencies, and detects slippage based on the difference.

[0032] The slip detection device has the following technical problems: on the one hand, the PLC control system accumulates and collects the pulses of the proximity switches within a program scanning cycle, which may easily lead to missing the pulses sensed by the switches, and the pulse data are not fully included in the PLC program, resulting in errors in the pulse data collected by the two proximity switches, which may easily lead to misjudgment; on the other hand, because two proximity switches are used to sense the sensing parts on the active roller and the driven roller respectively, when any group of detection devices fails or the pulse count is lost, false alarms may easily occur, and the detection accuracy of the slip detection device is low.

[0033] In this embodiment, by comparing the number of sensing signals output by the tested roller within at least two preset time periods with each other, rather than comparing with other tested rollers, the problem of false alarms due to loss of counts when testing two tested rollers is solved, the detection accuracy is improved, the probability of false fault alarms is reduced, and the stability and reliability of equipment operation are greatly improved.

[0034] In one embodiment, continue to refer to Figure 1 As shown, the detection component 200 is a high-frequency pulse switch, which is used to detect the sensing element 100 and output a pulse signal. The controller is used to obtain the number of pulse signals output by the high-frequency pulse switch in at least two preset time periods, and detect whether the difference between the number of pulse signals output in the two preset time periods is greater than a preset threshold.

[0035] In this embodiment, the detection component utilizes a high-frequency pulse switch. This high-frequency pulse switch detects the pulse signals generated by the rotating component to infer its speed, thereby detecting whether it is slipping. Specifically, when the detected roller 300 moves, the detection component 200 and the sensor 100 perform non-contact sensing and output a continuous pulse value.

[0036] Furthermore, the number of pulse signals output by the high-frequency pulse switch within at least two preset time periods is obtained, and the difference between the number of pulse signals output within the two preset time periods is detected to be greater than a preset threshold. When the difference between the number of pulse signals output within the two preset time periods is greater than the preset threshold, a slippage problem is determined to have occurred. When the difference between the number of pulse signals output within the two preset time periods is within the preset threshold, a slippage problem is determined not to have occurred.

[0037] In one embodiment, the controller is configured to obtain the number of pulse signals output by the high-frequency pulse switch in two consecutive preset time periods, and detect whether the difference between the number of pulse signals output in the two preset time periods is greater than a preset threshold.

[0038] In one embodiment, the preset time period may be preset to 1 second. In other embodiments, the preset time period may also be adaptively set to other values according to the diameter of the roller being measured.

[0039] In one embodiment, the detection component 200 uses a high-frequency pulse switch with a frequency of 2000 Hz.

[0040] In one embodiment, the number of the sensing elements 100 is set to at least two, and the sensing elements are evenly distributed on the radial end surface of the roller 300 to be tested.

[0041] In this embodiment, there are multiple sensing elements 100, and the multiple sensing elements 100 are evenly distributed on the radial end surface of the roller 300 to be tested, so as to improve the detection accuracy and increase the detection range, and facilitate the positioning of the slippage position.

[0042] In one embodiment, see Figure 1 As shown, there are four sensing elements 100 , and the angles between the lines formed by the sensing elements 100 and the centers of the radial end surfaces of the cylinder 300 to be tested are 90°.

[0043] In one embodiment, four evenly distributed sensing elements are provided on the radial end face of the roller 300 to be tested, and the angles between the lines formed by each sensing element 100 and the center of the radial end face of the roller 300 to be tested are 90° to each other, which is equivalent to dividing the radial end face of the roller 300 to be tested into four equal parts.

[0044] In one embodiment, the detection component 200 is installed on the peripheral side of the detected roller 300 through a bracket 400, and a position adjustment component 500 is provided on the bracket 400 to adjust the relative position between the detection component and the sensing element 100 through the position adjustment component 500 on the bracket 400.

[0045] In one embodiment, the bracket 400 is a triangular support structure consisting of a base plate and two side plates inclined upward from both ends of the base plate. The base plate is fixed to the ground or a workbench, and the position adjustment component 500 is installed at one end away from the base plate.

[0046] In one embodiment, see Figure 2 As shown, the position adjustment component 500 includes a mounting seat 510, an adjusting rod 520 and two adjusting nuts 530 passed through the adjusting rod 520. The mounting seat 510 is provided with an adjustment slot 511 along the vertical direction for the adjusting rod 520 to pass through. The first end of the adjusting rod 520 is connected to the detection component 200, and the second end of the adjusting rod 520 slides in the adjusting slot 511. The two adjusting nuts 530 are located on opposite sides of the adjusting slot 511 to lock and fix the adjusting rod 520 on the adjusting slot 511.

[0047] In this embodiment, the detection component 200 is installed on the adjustment rod 520. The relative position of the detection component 200 with respect to the sensing part 100 is adjusted by adjusting the position of the adjustment rod 520 on the adjustment slot 511 to ensure that the two are on the same horizontal line, thereby achieving accurate identification of the sensing part 100. In addition, the distance between the detection component 200 and the sensing part 100 can be adjusted by adjusting the length of the adjustment rod 520 passing through the adjustment slot 511 to move relatively away from or close to the sensing part 100. When adjusted to the appropriate position, the detection component 200 is fixed to a specific position on the adjustment slot 511 by tightening the two adjustment nuts 530.

[0048] In one embodiment, an alarm component is further included, which is electrically connected to the controller. The controller is used to control the alarm component to output an alarm signal when the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold.

[0049] In this embodiment, the alarm component is electrically connected to the controller so that when the controller detects that the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold, the alarm component is controlled to output an alarm signal, thereby stopping the roller under test and achieving the purpose of protecting the roller under test.

[0050] In one embodiment, the alarm component is at least one of an indicator light, a buzzer, an audible and visual alarm, and a speaker.

[0051] In one embodiment, the alarm component is an indicator light. When the controller detects that the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold, the indicator light is controlled to light up to give an alarm.

[0052] In one embodiment, the alarm component is a buzzer. When the controller detects that the difference between the number of pulse signals output within two preset time periods is greater than a preset threshold, the controller controls the buzzer to sound to give an alarm.

[0053] In one embodiment, the alarm component is an audible and visual alarm. When the controller detects that the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold, the audible and visual alarm is controlled to start to issue an alarm.

[0054] In one embodiment, the alarm component includes an indicator light and a speaker. When the controller detects that the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold, the indicator light and the speaker are controlled to start simultaneously to issue an alarm.

[0055] Example 2

[0056] In this embodiment, a cantilever belt conveyor is provided, including a driving source, a driving roller, a driven roller, a belt and a slip detection device as described in at least any one of the above embodiments, the driving source is drivingly connected to the driving roller, the driving roller and the driven roller are connected to the belt, the belt is mounted on the driving roller and the driven roller, the driving roller and the driven roller are used to support the belt and drive the belt to move; the slip detection device is used to detect slippage of the driven roller, the sensing element is installed on the driven roller, and the detection component is arranged on the circumferential side of the driven roller.

[0057] Example 3

[0058] In this embodiment, a stacker-reclaimer is provided, comprising the cantilever belt conveyor described in any of the above embodiments.

[0059] In this embodiment, a slip detection device is applied to the driven roller to detect slip of the cantilever belt conveyor, ensuring that slip of the cantilever belt conveyor can be discovered in time, avoiding damage to the belt conveyor due to untimely detection, and seriously affecting the transportation of materials and causing blockage.

[0060] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A slip detection device, characterized in that: include: A sensing element, a detection component, and a controller, wherein the controller is electrically connected to the detection component; The sensing element is used to be installed on the radial end surface of the measured roller and rotates under the drive of the measured roller; The detection assembly is arranged on the circumference of the detected roller, with the detection direction of the detection assembly facing the radial end surface of the detected roller on which the sensing element is arranged, and the detection assembly is used to detect the sensing element passing through the detection point and output a sensing signal; The detection component is installed on the circumferential side of the measured roller through a bracket, and a position adjustment component is provided on the bracket. The detection component is connected to the position adjustment component, and the position adjustment component is used to drive the detection component to be relatively close to or away from the sensing component along the axial and vertical directions of the measured roller.

2. The slip detection device according to claim 1, characterized in that: The detection component is a high-frequency pulse switch, which is used to detect the sensing element and output a pulse signal. The controller is used to obtain the number of pulse signals output by the high-frequency pulse switch in at least two preset time periods, and detect whether the difference between the number of pulse signals output in the two preset time periods is greater than a preset threshold.

3. The slip detection device according to claim 1, characterized in that: The number of the sensing elements is set to at least two, and the sensing elements are evenly distributed on the radial end surface of the measured roller.

4. The slip detection device according to claim 3, characterized in that: There are four sensing elements, and the angles between the lines formed by the sensing elements and the center of the radial end surface of the measured roller are 90°.

5. The slip detection device according to claim 1, characterized in that: The position adjustment assembly includes a mounting seat, an adjustment rod, and two adjustment nuts passed through the adjustment rod. The mounting seat is provided with an adjustment slot along the vertical direction for the adjustment rod to pass through. The first end of the adjustment rod is connected to the detection assembly, and the second end of the adjustment rod slides in the adjustment slot. The two adjustment nuts are located on opposite sides of the adjustment slot to lock the adjustment rod on the adjustment slot.

6. The slip detection device according to claim 2, characterized in that: It also includes an alarm component, which is electrically connected to the controller. The controller is used to control the alarm component to output an alarm signal when it detects that the difference in the number of pulse signals output within two preset time periods is greater than a preset threshold.

7. The slip detection device according to claim 6, characterized in that: The alarm component is at least one of an indicator light, a buzzer, an audible and visual alarm, and a speaker.

8. A cantilever belt conveyor, characterized in that: It includes a driving source, a driving roller, a driven roller, a belt and a slip detection device as described in any one of claims 1 to 7, wherein the driving source is connected to the driving roller, the driving roller and the driven roller are connected to the belt, and the belt is mounted on the driving roller and the driven roller; the slip detection device is used to detect slippage of the driven roller, the sensing element is installed on the driven roller, and the detection component is arranged on the circumferential side of the driven roller.

9. A stacker-reclaimer, characterized in that: Comprising the cantilever belt conveyor as claimed in claim 8.

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