Anti-tearing protection device for adhesive tape

Abstract

The utility model relates to the technical field of conveyors, and provides a rubber belt anti-tearing protection device which comprises a support, a trigger rope and at least one set of deviation sensors, the support is fixedly installed between the upper belt face and the lower belt face of a belt conveyor, and each set of deviation sensors are installed on the left side and the right side of the support respectively in the width direction. The two ends of the trigger rope are connected to the left deviation sensor and the right deviation sensor respectively, and the trigger rope stretches across the belt conveyor. According to the anti-tearing protection device for the adhesive tape, through the combination of the trigger rope and the deviation sensor, the tearing condition can be detected when the adhesive tape is torn but not broken and coal briquettes do not fall off, the detection time is greatly shortened, the detection accuracy and reliability are improved, and the technical problem that an existing anti-tearing protection device for the adhesive tape is inaccurate in detection is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a conveyor technical field especially is related to a kind of adhesive tape anti-tearing protection device. BACKGROUND

[0002] The current coal mine underground belt conveyor anti-tearing protection device is all using piezoelectric longitudinal tear sensor (for example, the piezoelectric longitudinal tear sensor of model CVY-2K), and the piezoelectric longitudinal tear sensor is located below the adhesive tape of belt conveyor.The working principle of the protection is that the adhesive tape of belt conveyor is torn, and coal block falls on the piezoelectric longitudinal tear sensor, and the longitudinal tear sensor is triggered to stop by relying on the weight of coal block, and there is certain limitation in use protection principle is relatively single.According to the actual situation, when the adhesive tape is just torn, the steel wire rope of adhesive tape edge is extracted or the adhesive tape edge is torn, because of the adhesive tape tension, the adhesive tape tear opening will be forced together, the coal block on the adhesive tape will not fall, the longitudinal tear sensor will not be triggered, and the belt conveyor cannot stop in time, which will lead to further expansion of the accident and affect the safe operation of belt conveyor. SUMMARY

[0003] The utility model aims at providing a kind of adhesive tape anti-tearing protection device, to solve the technical problem of the detection inaccuracy of existing adhesive tape anti-tearing protection device.

[0004] The application provides an adhesive tape anti-tearing protection device, which comprises a support, a trigger rope and at least one set of deviation sensors, the support is fixedly installed between the upper belt surface and the lower belt surface of the belt conveyor, each set of deviation sensors is installed on the left and right sides of the support along the width direction, the two ends of the trigger rope are connected to the left and right deviation sensors respectively, and the trigger rope is arranged across the belt conveyor.

[0005] In one embodiment, the adhesive tape anti-tearing protection device further comprises a piezoelectric tear sensor, which is installed on the support, and the piezoelectric tear sensor and the trigger rope are distributed along the transmission direction of the belt conveyor.

[0006] In one embodiment, the width of the piezoelectric tear sensor is 30% to 70% of the width of the support.

[0007] In one embodiment, the adhesive tape anti-tearing protection device further comprises a pivot, a flap and a limit sensor, the pivot is rotatably installed on the support, the flap is fixedly installed on the pivot, and the limit sensor is installed on the support, and the limit sensor is used to detect the position of the flap.

[0008] In one embodiment, the width of the flap is 60% to 90% of the width of the bracket, and the width of the flap is greater than the width of the piezoelectric tear sensor.

[0009] In one embodiment, the initial state of the flap is located between the bracket and the lower belt surface of the belt conveyor, and the thickness of the flap in the initial state is consistent with the transmission direction of the belt conveyor.

[0010] In one embodiment, the number of the limit sensors is two, and the two limit sensors are respectively installed on the left and right sides of the bracket along the width direction, and the flap is located between the two limit sensors.

[0011] In one embodiment, the tape anti-tear protection device further includes a controller, and the controller is electrically connected to the deviation sensor, the piezoelectric tear sensor, and the limit sensor respectively.

[0012] In one embodiment, there are multiple groups of deviation sensors, each group of the deviation sensors includes two deviation sensors, the two deviation sensors in each group are spaced apart on the left and right sides of the bracket along a direction parallel to the width, and the two ends of the trigger rope are respectively connected to the two deviation sensors in the same group.

[0013] In one embodiment, a plurality of groups of the deviation sensors are distributed at intervals along the transmission direction of the belt conveyor.

[0014] In one embodiment, there are two trigger ropes, and the two trigger ropes are respectively located on the upper and lower sides of the bracket.

[0015] In one embodiment, the width of the trigger rope is 70% to 100% of the width of the bracket.

[0016] The beneficial effect of the belt anti-tearing protection device provided by the utility model is that: the bracket is fixedly installed between the upper belt surface and the lower belt surface of the belt conveyor, and the trigger rope is also located between the upper belt surface and the lower belt surface; when the belt of the belt conveyor is just torn, although the torn edge of the belt will be forced together due to the tension of the belt, and the coal blocks on the belt will not fall off, but when the steel wire rope at the edge of the belt is pulled out or the belt edge is torn, the belt edge will hook the trigger rope located between the upper belt surface and the lower belt surface, thereby causing the two deviation sensors connected to the trigger rope to be stressed and realize the timely shutdown of the belt conveyor to avoid further expansion of the accident. That is, the belt anti-tearing protection device can detect the tearing situation when the belt is torn but not yet broken and the coal blocks have not fallen through the combination of the trigger rope and the deviation sensor, which greatly shortens the detection time, improves the accuracy and reliability of the detection, and solves the technical problem of inaccurate detection of the existing belt anti-tearing protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic structural diagram of the adhesive tape anti-tear protection device provided in an embodiment of the present invention;

[0019] Figure 2 Another perspective view of the adhesive tape anti-tear protection device provided by an embodiment of the present invention;

[0020] Figure 3 Another perspective view of the adhesive tape anti-tear protection device provided by an embodiment of the present invention;

[0021] Figure 4 This is another structural schematic diagram of the tape anti-tear protection device provided in an embodiment of the utility model.

[0022] Among them, the reference numerals in the figures are:

[0023] X, transmission direction; Y, width direction; Z, height direction;

[0024] 10. Belt conveyor; 11. Lower belt surface; 100. Bracket; 210. Trigger rope; 220. Deviation sensor; 230. Arc hook; 310. Piezoelectric tear sensor; 410. Rotating shaft; 420. Flap; 430. Limit sensor; 440. Sleeve; 500. Controller. DETAILED DESCRIPTION

[0025] The following describes in detail embodiments of the present invention, examples of which 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 to explain the present invention, and should not be construed as limiting the present invention.

[0026] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment" or "in some embodiments" appear in various places throughout this specification, not all references are to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0029] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] Combine Figure 1 、 Figure 2 and Figure 3 The tape anti-tear protection device provided in this application includes a bracket 100, a trigger rope 210 and at least one set of deviation sensors 220. The bracket 100 is fixedly installed between the upper belt surface and the lower belt surface 11 of the belt conveyor 10. Each set of deviation sensors 220 is installed on the left and right sides of the bracket 100 along the width direction Y. The two ends of the trigger rope 210 are respectively connected to the left and right deviation sensors 220, and the trigger rope 210 is set across the belt conveyor 10.

[0031] The bracket 100 is fixedly installed between the upper belt surface and the lower belt surface 11 of the belt conveyor 10, and the trigger rope 210 is also located between the upper belt surface and the lower belt surface 11. When the rubber belt of the belt conveyor 10 is just torn, although the rubber belt tear opening will be forced to come together due to the tension of the rubber belt, the coal on the rubber belt will not fall off, but the steel wire rope of the belt edge will be pulled out or the belt edge will be torn, and the belt edge will hook the trigger rope 210 located between the upper belt surface and the lower belt surface 11, thereby causing the two deviation sensors 220 connected with the trigger rope 210 to be forced to realize timely shutdown of the belt conveyor 10, thereby avoiding further expansion of the accident, that is, the rubber belt anti-tearing protection device can detect the tearing condition when the rubber belt is torn but not disconnected and the coal has not fallen off through the combination of the trigger rope 210 and the deviation sensor 220, thereby greatly advancing the detection time and improving the accuracy and reliability of detection.

[0032] Among them, the edge of the belt edge is torn or deviated, which will touch the deviation sensor 220, thereby causing shutdown. The trigger rope 210 across the conveyor can capture the tearing of the middle position of the belt edge, even a small tearing sign, no matter where the tearing occurs, can effectively detect and immediately trigger shutdown to prevent further tearing, thereby reducing equipment damage, material loss and potential safety risks.

[0033] In one embodiment, the trigger rope 210 is a steel rope or a copper rope.

[0034] In one embodiment, the number of trigger ropes 210 is two, and the two trigger ropes 210 are located on the upper and lower sides of the bracket 100, respectively, which can simultaneously detect abnormal conditions of the rubber belt in the upward and downward directions. When the rubber belt is torn or damaged, at least one trigger rope 210 can be triggered regardless of whether the tearing position is on the upper side or the lower side, thereby ensuring the accuracy and reliability of detection.

[0035] In one embodiment, the deviation sensor 220 is a plurality of groups, each group including two deviation sensors 220, and the two deviation sensors 220 of each group are distributed on the left and right sides of the bracket 100 along the width direction Y, and the two ends of the trigger rope 210 are connected to the two deviation sensors 220 of the same group.

[0036] Specifically, the plurality of groups of deviation sensors 220 are distributed along the transmission direction X of the belt conveyor 10, thereby expanding the detection range.

[0037] Specifically, the number of trigger ropes 210 is the same as the number of groups of yaw sensors 220, with each group of yaw sensors 220 corresponding to one trigger rope 210. Alternatively, each group of yaw sensors 220 corresponds to two trigger ropes 210, with one trigger rope 210 connected to the upper side of the yaw sensors 220 in the same group, that is, located between the bracket 100 and the upper belt surface. The other trigger rope 210 is connected to the lower side of the yaw sensors 220 in the same group, that is, located between the bracket 100 and the lower belt surface 11.

[0038] Specifically, the shape of the trigger rope 210 can be a straight line, such as Figure 1 In other embodiments, the trigger cord 210 is shaped like a spiral or a wave to increase the detection height.

[0039] In one embodiment, combined Figure 4 The tape tear protection device further includes an arc-shaped hook 230 , which is connected to the trigger rope 210 . The arc-shaped hook 230 expands the range of contact with the torn tape edge, thereby improving the detection range and accuracy.

[0040] Specifically, the arc-shaped hook 230 is located on a side of the trigger rope 210 away from the bracket 100 , that is, close to the upper tape surface or the lower tape surface 11 of the tape.

[0041] Specifically, each trigger cord 210 corresponds to a plurality of arc-shaped hooks 230 , and the plurality of arc-shaped hooks 230 are spaced apart along the length direction of the trigger cord 210 . The plurality of arc-shaped hooks 230 expand the range of contact with the torn belt edge, thereby improving the detection range and accuracy.

[0042] Specifically, the trigger rope 210 and the arc-shaped hook 230 are integrally formed, with high bonding strength, and no additional assembly is required.

[0043] In one embodiment, the width of the trigger cord 210 is 70% to 100% of the width of the bracket 100. This means that most or all of the width of the tape is effectively monitored, ensuring that if a tear occurs, the trigger cord 210 will promptly detect it regardless of the tear's location within the tape's width. The wider trigger cord 210 reduces monitoring blind spots and reduces the risk of missed detections due to tears occurring in these blind spots.

[0044] In some embodiments, combined Figure 1 and Figure 3The tape tear protection device further comprises a piezoelectric tear sensor 310 installed on the support 100. The piezoelectric tear sensor 310 is usually installed below the tape and can detect the coal or other materials falling after the tape is torn, thereby triggering the shutdown. The piezoelectric tear sensor 310 is used in combination with the trigger rope 210 to provide multiple detection means for tape tearing. The two can complement each other to improve the accuracy and reliability of detection. By using the piezoelectric tear sensor 310 and the trigger rope 210 in combination, false positives and false negatives caused by single sensor failure or misjudgment can be reduced. This improves the reliability and stability of the protection device.

[0045] Specifically, the piezoelectric tear sensor 310 and the trigger rope 210 are spaced apart along the conveying direction X of the belt conveyor 10, and the two can expand the detection range in the conveying direction X and improve the detection accuracy.

[0046] In one embodiment, the piezoelectric tear sensor 310 and the trigger rope 210 are arranged in the conveying direction X of the belt conveyor 10. Figure 3 The width of the piezoelectric tear sensor 310 is 30% to 70% of the width of the support 100. The width of the support 100 is 100% to 120% of the width of the tape. In this way, the piezoelectric tear sensor 310 can cover most of the area of the tape, significantly reduce the blind area, improve the accuracy of detection, and effectively detect the tape breakage.

[0047] Therefore, when the width of the piezoelectric tear sensor 310 is less than 30% of the width of the support 100, a detection blind area may be caused, i.e. some parts of the tape are broken and the coal falling does not touch the piezoelectric tear sensor 310, which cannot be effectively monitored. When the width of the piezoelectric tear sensor 310 is greater than 70% of the width of the support 100, the cost of the piezoelectric tear sensor 310 is high, and the installation requirement is high to avoid deviation.

[0048] Specifically, in the projection in the height direction Z, the projection of the piezoelectric tear sensor 310 is located within the projection of the support 100. Further, the projection of the piezoelectric tear sensor 310 is located within the projection of the tape.

[0049] In some embodiments, the piezoelectric tear sensor 310 and the trigger rope 210 are arranged in the conveying direction X of the belt conveyor 10. Figure 1 and Figure 2The tape tear protection device also includes a rotating shaft 410, a flap 420, and a limit sensor 430. The rotating shaft 410 is rotatably mounted on the bracket 100, the flap 420 is fixedly mounted on the rotating shaft 410, and the limit sensor 430 is mounted on the bracket 100. The limit sensor 430 is used to detect the position of the flap 420. When the upper surface of the tape breaks, the falling coal or other materials will push the flap 420 to flip, triggering the limit sensor 430 and triggering a shutdown protection. The limit sensor 430 detects the position of the flap 420. When the flap 420 flips to a certain angle, the limit sensor 430 sends a signal to trigger a shutdown.

[0050] Based on this, the combined design of the rotating shaft 410, flap 420, and limit sensor 430 provides multiple protection mechanisms against tape tears. In addition to the piezoelectric tear sensor 310 and trigger cord 210, the flap 420 and limit sensor 430 form another line of defense, further enhancing the reliability and comprehensiveness of the protection. This combination of flap 420 and limit sensor 430 can adapt to different types of tearing situations. Whether a tear occurs at the edge of the tape or in the center, as long as the tear causes coal or other materials to fall and push the flap 420 to flip, a shutdown protection mechanism will be triggered.

[0051] When material falls from the damaged area and hits flap 420, flap 420 rotates, causing a dramatic change in the distance between flap 420 and limit sensor 430. This change is sensed by limit sensor 430, signaling a break in the tape. The wide flap 420 can essentially catch all falling material on the tape's cross-section, allowing limit sensor 430 to detect the entire tape cross-section from a single point. This significantly increases the detection range and sensitivity, while also simplifying the structure and reducing costs.

[0052] In one embodiment, the width of flap 420 is 60% to 90% of the width of bracket 100. This increased width allows flap 420 to accommodate various tear conditions. Whether a minor tear at the edge of the tape or a severe tear in the center, as long as the tear causes coal or other material to fall and push flap 420 to flip, a shutdown protection will be triggered. Flap 420 can cover most or all of the tape's width, effectively detecting tape tears and ensuring a timely response from flap 420 when a tear occurs, reducing the likelihood of missed detections.

[0053] In one embodiment, the width of flap 420 is greater than that of piezoelectric tear sensor 310, meaning flap 420 can cover a wider area of ​​the tape. In contrast, while piezoelectric tear sensor 310 has high sensitivity, its detection range is limited by its size. Due to its wider width, flap 420 can more easily cover these blind spots, thereby improving detection comprehensiveness.

[0054] In one embodiment, the combination of the running deviation sensor 220 and the piezoelectric tear sensor 310 can detect the material falling off the belt conveyor 10 and the material falling off the belt conveyor 10 directly. Figure 2 In one embodiment, the initial state of the flap 420 is located on the lower belt surface 11 of the bracket 100 and the belt conveyor 10, and the thickness of the initial state of the flap 420 is consistent with the conveying direction X of the belt conveyor 10. Based on this, the material falling onto the lower belt surface 11 will touch the vertically downward flap 420 while moving with the lower belt surface 11, thereby triggering the rotation of the flap 420 and stopping the machine. The piezoelectric tear sensor 310 is used to detect the material falling off the upper belt surface directly, and the flap 420 is used to detect the material that has already fallen onto the lower belt surface 11. The combination of the two detection methods is more comprehensive.

[0055] In one embodiment, the number of limit sensors 430 is two, and the two limit sensors 430 are respectively installed on the left and right sides of the bracket 100 along the width direction Y, and the flap 420 is located between the two limit sensors 430. The two limit sensors 430 are respectively located on the left and right sides of the bracket 100. When the flap 420 is flipped due to the tearing of the rubber belt, at least one limit sensor 430 is triggered, thereby ensuring the accuracy and reliability of the detection.

[0056] In one embodiment, the rubber belt tear-proof protection device further comprises a sleeve 440, which is fixedly installed on the bracket 100, and the rotating shaft 410 is rotatably sleeved in the sleeve 440.

[0057] In one embodiment, the rubber belt tear-proof protection device further comprises a controller 500, which is electrically connected with the running deviation sensor 220, the piezoelectric tear sensor 310, and the limit sensor 430. The controller 500 can receive the signals sent by the running deviation sensor 220, the piezoelectric tear sensor 310, and the limit sensor 430 in real time through the electrical connection. Once the controller 500 detects an abnormal situation, it will immediately trigger a stop signal to make the belt conveyor 10 stop running. In other words, the controller 500 is electrically connected with the motor of the belt conveyor 10 and can control the belt conveyor 10 to stop.

[0058] Based on actual on-site conditions, the applicant designed a "three-in-one" full-section anti-tear protection device for the belt conveyor 10. Specifically, based on piezoelectric longitudinal tear sensors, a set of deviation sensors 220 are installed on the longitudinal beams on the pedestrian and non-pedestrian sides of the upper and lower belt surfaces 11. A trigger rope 210 connects the deviation sensors 220 in the same set. When the steel wire rope at the edge of the belt is pulled out or the belt edge tears, the trigger rope 210 activates the deviation sensors 220 and shuts down the conveyor. Furthermore, a set of limit sensors 430 is installed above the lower belt surface 11. A rotating shaft 410 is attached to the piezoelectric longitudinal tear sensors, running along the transverse direction of the belt. A flap 420 is mounted on the rotating shaft 410. When the belt tears, the coal blocks fall onto the bottom belt and move toward the rear of the conveyor, triggering the flap 420 to flip backward, thereby activating the limit sensors 430 and shutting down the conveyor.

[0059] The design and installation of the 10-piece "three-in-one" full-section anti-tear protection device for the belt conveyor further ensures the reliability of the belt tear protection. When the belt conveyor has any type of tear, it can be stopped in time to avoid further expansion of the belt tear and reduce the production impact time. The benefits are as follows:

[0060] First, direct benefits: preventing tape tearing, reducing millions of yuan in tape replacement and joint vulcanization costs.

[0061] Second, indirect benefits: each time the production impact time is reduced by 24 hours, and the production impact is reduced by 100 hours each year, with indirect economic benefits of tens of millions of yuan.

[0062] In summary, the width of the trigger cord 210 is designed to be 70% to 100% of the width of the bracket 100, which can provide benefits such as increased detection coverage, enhanced detection sensitivity, greater adaptability, and improved system reliability. These advantages make the entire protective device more effective and reliable in ensuring production safety and improving production efficiency.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tape anti-tear protection device, characterized by: The belt anti-tear protection device includes a bracket, a trigger rope and at least one group of deviation sensors. The bracket is fixedly installed between the upper belt surface and the lower belt surface of the belt conveyor. Each group of deviation sensors is installed on the left and right sides of the bracket along the width direction. The two ends of the trigger rope are respectively connected to the two left and right deviation sensors. The trigger rope is set across the belt conveyor.

2. The adhesive tape tear protection device according to claim 1, characterized in that: The tape anti-tear protection device further includes a piezoelectric tear sensor, which is mounted on the bracket. The piezoelectric tear sensor and the trigger rope are spaced apart along the transmission direction of the belt conveyor.

3. The adhesive tape tear protection device according to claim 2, characterized in that: The width of the piezoelectric tear sensor is 30% to 70% of the width of the bracket.

4. The adhesive tape tear protection device according to claim 2, characterized in that: The tape anti-tear protection device also includes a rotating shaft, a flap and a limit sensor. The rotating shaft is rotatably mounted on the bracket, the flap is fixedly mounted on the rotating shaft, and the limit sensor is mounted on the bracket. The limit sensor is used to detect the position of the flap.

5. The adhesive tape tear protection device according to claim 4, characterized in that: The width of the flap is 60% to 90% of the width of the bracket, and the width of the flap is greater than the width of the piezoelectric tear sensor.

6. The adhesive tape tear protection device according to claim 4, characterized in that: The flap is initially located between the bracket and the lower belt surface of the belt conveyor, and the thickness of the flap is initially consistent with the transmission direction of the belt conveyor; There are two limit sensors, which are respectively installed on the left and right sides of the bracket along the width direction, and the flap is located between the two limit sensors.

7. The adhesive tape tear protection device according to claim 4, characterized in that: The tape anti-tear protection device further includes a controller, which is electrically connected to the deviation sensor, the piezoelectric tear sensor, and the limit sensor respectively.

8. The adhesive tape tear protection device according to claim 1, characterized in that: There are multiple groups of deviation sensors, each group of deviation sensors includes two deviation sensors, and the two deviation sensors in each group are spaced apart and distributed on the left and right sides of the bracket in a direction parallel to the width, and the two ends of the trigger rope are respectively connected to the two deviation sensors in the same group; A plurality of groups of the deviation sensors are distributed at intervals along the transmission direction of the belt conveyor.

9. The adhesive tape tear protection device according to claim 1, characterized in that: There are two trigger ropes, and the two trigger ropes are respectively located on the upper and lower sides of the bracket.

10. The adhesive tape anti-tear protection device according to any one of claims 1 to 9, characterized in that: The width of the trigger rope is 70% to 100% of the width of the bracket.

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