Longitudinal tearing prevention detection device and detection method thereof

Abstract

The longitudinal tearing prevention detection device comprises a buffer bed, a plurality of steel wire rope detection assemblies and a detector, the buffer bed and the detector are arranged at the two ends of a conveying belt respectively, and the buffer bed is arranged below the conveying belt at one end of a discharging opening. The multiple steel wire rope detection assemblies are arranged between the buffer bed and the detector and distributed below the conveying belt in the length direction of the conveying belt at intervals. The buffer bed is arranged below the conveying belt at one end of the discharging port, impact force generated when materials fall can be directly borne, the multiple steel wire rope detection assemblies are distributed between the buffer bed and the detector at intervals in the length direction of the conveying belt, sectional type longitudinal tearing monitoring covering can be formed on the whole length of the conveying belt, and the blind area problem of single-point detection is avoided; the combination of the upper steel wire rope and the upper pull rope switches at the two ends can quickly trigger a signal when the conveyor belt tends to be longitudinally torn, and is matched with a detector to realize timely early warning, so that the tearing range is effectively prevented from being expanded, and double guarantees of front-end impact-resistant protection and rear-end global longitudinal tearing monitoring are integrally provided for the operation of the conveyor belt; the running safety and the service life of the conveying belt are obviously improved.

Description

Technical Field

[0001] This invention relates to a tear-resistant detection device and its detection method. Background Technology

[0002] Conveyor belts, as crucial continuous transportation equipment in modern industrial production, are widely used in numerous fields such as mining, metallurgy, chemical industry, ports, power, and building materials. Their operational safety, stability, and continuity directly affect the efficiency and economic benefits of the entire production system. Among the many types of conveyor belt failures, longitudinal tearing is one of the most serious and destructive. Once a longitudinal tear occurs, it not only causes permanent damage to the conveyor belt itself, resulting in huge direct economic losses and replacement and repair time costs, but it can also trigger a chain reaction of material leakage, equipment blockage, and even shutdowns, seriously threatening the safe and stable operation of the entire production system. Summary of the Invention

[0003] The main objective of this invention is to provide a tear-resistant detection device and method to solve the problems mentioned in the background.

[0004] The objective of this invention can be achieved by adopting the following technical solution: A longitudinal tear detection device includes a buffer bed, multiple sets of wire rope detection components and a detector. The buffer bed and the detector are respectively installed at both ends of a conveyor belt. The buffer bed is installed below the conveyor belt at the discharge port end. The multiple sets of wire rope detection components are installed between the buffer bed and the detector and are distributed at intervals along the length of the conveyor belt below the conveyor belt. The buffer bed includes multiple primary buffer components and secondary buffer components that are spaced and staggered. Multiple buffer rollers are arranged on the primary buffer components along the width direction of the conveyor belt, and multiple buffer pads are arranged on the secondary buffer components along the width direction of the conveyor belt. The height of the buffer rollers is higher than that of the buffer pads. The wire rope detection assembly includes an upper wire rope, the two ends of which are respectively connected to two upper pull rope switches.

[0005] Preferably, the primary buffer assembly includes a primary buffer frame, the buffer roller is horizontally arranged at the center of the primary buffer frame, and the two sides of the central buffer roller are provided with upward and outward inclined buffer rollers.

[0006] Preferably, the primary buffer frame is vertically provided with unidirectional support frames on both sides, and two bidirectional support frames are vertically spaced on the inner side of the primary buffer frame. The two sides of the central buffer roller are respectively connected to the inner sides of the two bidirectional support frames, and the two ends of the buffer rollers on both sides are respectively connected to the unidirectional support frame and the outer side of the bidirectional support frame.

[0007] Preferably, the first-stage buffer frame is provided with first-stage buffer springs at both ends. The top end of the first-stage buffer spring is fixed to the first-stage buffer frame, and the bottom end of the first-stage buffer spring is fixed to the first-stage movable component. The bottom of the first-stage movable component is provided with a first-stage guide bolt that passes through the first-stage movable component, the first-stage buffer spring, and the first-stage buffer frame in sequence from bottom to top. The top end of the first-stage guide bolt is provided with a first-stage guide nut.

[0008] Preferably, the secondary buffer assembly includes a secondary buffer frame, the buffer pad is horizontally positioned at the center of the secondary buffer frame, and the buffer pads on both sides of the central buffer pad are inclined upward and outward.

[0009] Preferably, a horizontal support frame is provided at the center of the secondary buffer frame, and inclined support frames are provided on both sides of the horizontal support frame.

[0010] Preferably, the two ends of the secondary buffer frame are provided with secondary buffer springs, the top of the secondary buffer springs are fixed to the secondary buffer frame, the bottom of the secondary buffer springs are fixed to the secondary movable component, the bottom of the secondary movable component is provided with a secondary guide bolt that passes through the secondary movable component, the secondary buffer spring and the secondary buffer frame from bottom to top, and the top of the secondary guide bolt is provided with a secondary guide nut.

[0011] Preferably, the wire rope detection assembly includes a fixed frame, with multiple upper fixed pulleys spaced apart on the upper part of the fixed frame. The height of the upper fixed pulleys on both sides is higher than that of the upper fixed pulley in the middle position. The upper wire rope passes through the groove of each upper fixed pulley in sequence, and its two ends are respectively connected to the upper pull rope switches on both sides.

[0012] Preferably, lower fixed pulleys are provided on both sides of the lower fixed frame, and lower steel wire ropes are provided on the lower fixed pulleys. The lower steel wire ropes pass through the groove of each lower fixed pulley in sequence, and their two ends are respectively connected to the pull-down rope switches on both sides.

[0013] A method for detecting a tear-resistant device includes the following steps: Step S1: When the material falls from the discharge port onto the conveyor belt, the buffer bed immediately activates its all-around buffer protection mechanism. The upper-level primary buffer component makes contact with the conveyor belt first, and the buffer idler absorbs and disperses the impact and vibration generated by the falling material, forming the first layer of buffer barrier. The staggered primary and secondary buffer components work together as the second layer of protection. The buffer pad flexibly contacts and absorbs the remaining impact force transmitted by the conveyor belt, complementing the buffer idler and preventing overload of a single buffer structure. At the same time, the primary and secondary buffer springs work synchronously, absorbing high-frequency vibration energy through elastic deformation, forming the third layer of buffer defense. This triple buffer synergy effectively weakens the impact force when the material falls, controls the instantaneous stress on the conveyor belt within a safe threshold, and reduces the possibility of tearing caused by material impact from the source. Step S2: When a foreign object tears the conveyor belt, the foreign object and the material being conveyed on the belt will fall from the tear. The foreign object and the material will touch the upper wire rope, and the tension of the upper wire rope will change. After the upper pull rope switch senses the abnormal tension of the upper wire rope, the internal mechanical structure will trigger the contact action and send an electrical signal. The output signal of the upper pull rope switch is connected to the input module of the PLC that controls the operation of the conveyor belt through the cable, and the abnormal signal is transmitted to the PLC. After receiving the abnormal signal, the PLC will immediately send a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system will cut off the power supply to the motor, and the conveyor belt will stop running, completing the emergency stop protection. Step S3: To address special situations, such as small foreign objects failing to contact the wire rope or no material falling from the torn section, a detector located at the other end of the conveyor belt plays a supplementary detection role. The detector monitors the surface and operating status of the conveyor belt in real time. When a tear occurs in the conveyor belt but is not detected by the wire rope detection component, the detector can capture the characteristic signal generated by the tear and send the signal to the PLC. After receiving the abnormal signal, the PLC immediately sends a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system cuts off the motor power, and the conveyor belt stops running, completing the emergency stop protection.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are: 1. This invention places a buffer bed under the conveyor belt at one end of the feed inlet, directly absorbing the impact force of falling materials. Simultaneously, the design utilizes the staggered distribution of the primary buffer rollers and the secondary buffer pads, with the buffer rollers being higher than the buffer pads. This design allows the buffer rollers to primarily bear the conveyor belt pressure and reduce wear through rolling, while the buffer pads assist in absorbing localized pressure and minor impacts. This dual approach reduces the risk of conveyor belt damage caused by material impacts from the source. Multiple sets of wire rope detection components are spaced along the length of the conveyor belt between the buffer bed and the detector, providing segmented longitudinal tear monitoring coverage along the entire length of the conveyor belt, avoiding blind spots in single-point detection. The combination of the upper wire rope and the pull-cord switches at both ends quickly triggers a signal when longitudinal tearing occurs, working with the detector to provide timely warnings and effectively prevent the tear from spreading. Overall, this invention provides dual protection for the conveyor belt operation: front-end impact resistance and rear-end full-range longitudinal tear monitoring, significantly improving the safety and service life of the conveyor belt.

[0015] 2. This invention constructs a highly efficient impact-resistant protection system through a three-layer synergistic buffer structure: the buffer idler rollers first absorb the impact of materials, forming the first layer of basic buffer; the buffer idler rollers and buffer pads cooperate and complement each other to form the second layer of composite buffer; simultaneously, the primary and secondary buffer springs deform synchronously, quickly absorbing the high-frequency vibration energy generated by the material impact, forming the third layer of elastic buffer. These three layers of buffer work progressively and synergistically to effectively weaken the impact force when materials fall, stabilizing the instantaneous stress on the conveyor belt within a safe threshold, and significantly reducing the risk of conveyor belt tearing caused by material impact from the source.

[0016] 3. The wire rope detection device of the present invention is equipped with two detection systems: an upper wire rope and a lower wire rope. The upper wire rope targets the load-bearing section of the conveyor belt, while the lower wire rope focuses on the return section, achieving full coverage monitoring of the key operating sections of the conveyor belt. This dual detection structure provides double protection, effectively avoiding blind spots and failure risks that may exist in single detection, significantly improving the reliability of the longitudinal tear detection system, and providing strong support for the safe operation of on-site equipment and continuous and stable production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the buffer bed structure according to an embodiment of the present invention; Figure 2 This is a front view of the buffer bed according to an embodiment of the present invention; Figure 3 This is a left view of the buffer bed according to an embodiment of the present invention; Figure 4 This is a top view of the buffer bed according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the primary buffer component structure according to an embodiment of the present invention; Figure 6This is a front view of the primary buffer component according to an embodiment of the present invention; Figure 7 This is a left view of the primary buffer component according to an embodiment of the present invention; Figure 8 This is a top view of the primary buffer component according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the secondary buffer component structure according to an embodiment of the present invention; Figure 10 This is a front view of the secondary buffer component according to an embodiment of the present invention; Figure 11 This is a left view of the secondary buffer component according to an embodiment of the present invention; Figure 12 This is a top view of the secondary buffer component according to an embodiment of the present invention; Figure 13 This is a front view of a wire rope detection assembly according to an embodiment of the present invention; Figure 14 This is a left view of a wire rope detection assembly according to an embodiment of the present invention; Figure 15 This is a top view of a wire rope detection assembly according to an embodiment of the present invention; Figure 16 This is a schematic diagram of the wire rope detection assembly structure according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the detector installation according to an embodiment of the present invention; Figure 18 This is a side view of the detector according to an embodiment of the present invention.

[0018] In the diagram: 1. Buffer bed; 2. Wire rope detection assembly; 3. Detector; 4. Primary buffer assembly; 5. Secondary buffer assembly; 6. Buffer roller; 7. Buffer pad; 8. Upper wire rope; 9. Upper pull rope switch; 10. Primary buffer frame; 11. One-way support frame; 12. Two-way support frame; 13. Primary buffer spring; 14. Primary moving part; 15. Primary guide bolt; 16. Primary guide nut; 17. Secondary buffer frame; 18. Horizontal support frame; 19. Inclined support frame; 20. Secondary buffer spring; 21. Secondary moving part; 22. Secondary guide bolt; 23. Secondary guide nut; 24. Fixed frame; 25. Upper fixed pulley; 26. Lower fixed pulley; 27. Lower wire rope; 28. Lower pull rope switch. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Please see Figures 1 to 18One embodiment provided by the present invention: A longitudinal tear detection device includes a buffer bed 1, multiple sets of wire rope detection components 2 and a detector 3. The buffer bed 1 and the detector 3 are respectively arranged at both ends of the conveyor belt. The buffer bed 1 is arranged below the conveyor belt at the discharge port end. The multiple sets of wire rope detection components 2 are arranged between the buffer bed 1 and the detector 3 and are distributed at intervals along the length of the conveyor belt below the conveyor belt. The buffer bed 1 is designed to protect the feed inlet, a high-risk area for conveyor belt damage, while the detector 3 performs centralized signal processing at the other end of the conveyor belt, forming a full-link control system of front-end protection and back-end monitoring to avoid the risk of missing local protection.

[0021] The buffer bed 1 directly absorbs the impact force when the material falls, preventing the material from directly hitting the surface of the conveyor belt or causing excessive deformation of the conveyor belt due to impact, thus reducing the risk of tearing caused by impact fatigue of the conveyor belt from the source.

[0022] The detector 2 can use existing technologies, such as infrared laser detectors, X-ray detectors, etc.

[0023] The buffer bed 1 includes multiple primary buffer components 4 and secondary buffer components 5 that are spaced and staggered. Multiple buffer rollers 6 are arranged on the primary buffer components 4 along the width direction of the conveyor belt, and multiple buffer pads 7 are arranged on the secondary buffer components 5 along the width direction of the conveyor belt. The height of the buffer rollers 6 is higher than that of the buffer pads 7. The buffer bed 1 achieves dual buffering and complementary protection through the staggered distribution of primary buffer component 4 and secondary buffer component 5, effectively mitigating the impact on the conveyor belt when materials are discharged.

[0024] The wire rope detection assembly 2 includes an upper wire rope 8, with both ends of the upper wire rope 8 connected to two upper pull rope switches 9 respectively.

[0025] It enables segmented monitoring of the entire length of the conveyor belt. When a section of the conveyor belt shows a slight longitudinal tearing tendency, the nearby wire rope detection component 2 can quickly trigger a signal to prevent the tear from expanding due to blind spots in the detection.

[0026] Furthermore, the primary buffer assembly 4 includes a primary buffer frame 10, with buffer rollers 6 horizontally positioned at the center of the primary buffer frame 10, and upwardly and outwardly inclined buffer rollers 6 positioned on both sides of the central buffer roller 6.

[0027] The design conforms to the usage pattern of the conveyor belt, avoiding uneven force caused by local suspension between the buffer roller 6 and the conveyor belt, thus ensuring the buffering effect.

[0028] Furthermore, one-way support frames 11 are vertically arranged on both sides of the primary buffer frame 10, and two two-way support frames 12 are vertically spaced on the inner side of the primary buffer frame 10. The two sides of the central buffer roller 6 are respectively connected to the inner sides of the two two-way support frames 12, and the two ends of the two buffer rollers 6 are respectively connected to the one-way support frame 11 and the outer side of the two-way support frame 12.

[0029] The unidirectional support frame 11 and the bidirectional support frame 12 are provided with insertion holes for inserting both ends of the buffer roller 6. The insertion holes are reserved with space for the bounce of the buffer roller 6, which can absorb part of the impact force through its own displacement, further reducing the damage to the conveyor belt caused by the impact.

[0030] Furthermore, primary buffer springs 13 are provided at both ends of the primary buffer frame 10. The top end of the primary buffer spring 13 is fixed to the primary buffer frame 10, and the bottom end of the primary buffer spring 13 is fixed to the primary movable part 14. The bottom of the primary movable part 14 is provided with a primary guide bolt 15 that passes through the primary movable part 14, the primary buffer spring 13 and the primary buffer frame 10 from bottom to top. The top end of the primary guide bolt 15 is provided with a primary guide nut 16.

[0031] The impact force of the falling material is transmitted from the buffer roller 6 to the entire primary buffer frame 10. The primary buffer spring 13 is self-compressed after being impacted, reducing the damage to the conveyor belt and the buffer roller 6 caused by rigid impact.

[0032] Furthermore, the secondary buffer assembly 5 includes a secondary buffer frame 17, with a buffer pad 7 horizontally positioned at the center of the secondary buffer frame 17, and upwardly and outwardly inclined buffer pads 7 on both sides of the central buffer pad 7.

[0033] Under normal operating conditions, the conveyor belt is mainly supported by the higher impact idler roller 6; when the material impact is too great or the conveyor belt sinks in a local area, the impact pad 7 will help to bear the pressure. The impact pad 6 has flexible cushioning characteristics and can absorb high-frequency micro-impacts that the impact idler roller 6 cannot bear, further protecting the conveyor belt.

[0034] The angle of the inclined buffer pad is the same as that of the inclined buffer idler, which can conform to the arc shape of the conveyor belt side and avoid local stress concentration.

[0035] Furthermore, a horizontal support frame 18 is provided at the center of the secondary buffer frame 17, and inclined support frames 19 are provided on both sides of the horizontal support frame 18.

[0036] The horizontal support frame 18 and the inclined support frame 19 are directly attached to the bottom of the buffer pad 7. The horizontal support frame 18 bears the pressure of the central buffer pad 7, and the inclined support frame 19 bears the pressure of the side buffer pad 7, so as to prevent the buffer pad 7 from being dented or torn due to excessive local stress and extend the service life of the buffer pad 7.

[0037] Furthermore, secondary buffer springs 20 are provided at both ends of the secondary buffer frame 17. The top end of the secondary buffer spring 20 is fixed on the secondary buffer frame 17, and the bottom end of the secondary buffer spring 20 is fixed on the secondary movable part 21. The bottom of the secondary movable part 21 is provided with a secondary guide bolt 22 that passes through the secondary movable part 21, the secondary buffer spring 20 and the secondary buffer frame 17 from bottom to top. The top end of the secondary guide bolt 22 is provided with a secondary guide nut 23.

[0038] The impact force of the falling material is transmitted from the buffer roller 6 to the entire primary buffer frame 10. The secondary buffer spring 20 is self-compressed after being impacted, reducing the damage to the conveyor belt and buffer pad 6 caused by rigid impact.

[0039] Furthermore, the wire rope detection assembly 2 includes a fixed frame 24, with multiple upper fixed pulleys 25 spaced apart on the upper part of the fixed frame 24. The height of the upper fixed pulleys 25 on both sides is higher than that of the upper fixed pulley 25 in the middle position. The upper wire rope 8 passes through the groove of each upper fixed pulley 25 in sequence, and its two ends are respectively connected to the upper pull rope switches 9 on both sides.

[0040] The fixed pulleys, which are high on both sides and low in the middle, make the upper wire rope form an arc-shaped structure that fits the natural arc of the lower surface of the conveyor belt. When the conveyor belt is torn longitudinally, material will fall from the tear and pull the upper wire rope 8, thereby triggering the upper pull rope switch 9. After the upper pull rope switch 9 transmits the signal to the PLC, the PLC controls the motor of the conveyor belt to stop to prevent more serious accidents from happening.

[0041] Furthermore, lower fixed pulleys 26 are provided on both sides below the fixed frame 24, and lower steel wire ropes 27 are provided on the lower fixed pulleys 26. The lower steel wire ropes 27 pass through the groove of each lower fixed pulley 26 in sequence, and their two ends are respectively connected to the pull-down rope switches 28 on both sides.

[0042] After the load-bearing section of the conveyor belt tears, there may be a tear that is not completely torn and fails to trigger the detection of the upper wire rope 5 and the detector 3. However, the tear will increase in degree as the conveyor belt runs to the return section. At this time, the lower wire rope 8 can detect this type of tear, thereby triggering a shutdown and improving the coverage and accuracy of longitudinal tear detection.

[0043] A method for detecting a tear-resistant device includes the following steps: Step S1: When the material falls from the discharge port onto the conveyor belt, the buffer bed 1 immediately activates its all-around buffer protection mechanism. The upper-level primary buffer component 4 makes contact with the conveyor belt first, and the buffer idler roller 6 absorbs and disperses the impact and vibration generated by the falling material, forming the first layer of buffer barrier. The staggered primary buffer component 4 and secondary buffer component 5 together serve as the second layer of protection, and the buffer pad 7 flexibly contacts and receives the remaining impact force transmitted by the conveyor belt, complementing the buffer idler roller 6 and preventing overload of a single buffer structure. At the same time, the primary buffer spring and the secondary buffer spring work synchronously, absorbing high-frequency vibration energy through elastic deformation, forming the third layer of buffer defense. This triple buffer synergy can effectively weaken the impact force when the material falls, control the instantaneous stress on the conveyor belt within a safe threshold, and reduce the possibility of tearing caused by material impact from the source. Step S2: When a foreign object tears the conveyor belt, the foreign object and the material being conveyed on the conveyor belt will fall from the tear. The foreign object and the material will touch the upper steel wire rope 8, and the tension of the upper steel wire rope 8 will change. After the upper pull rope switch 9 senses the abnormal tension of the upper steel wire rope 8, the internal mechanical structure triggers the contact action and sends an electrical signal. The output signal of the upper pull rope switch 9 is connected to the input module of the PLC that controls the operation of the conveyor belt through the cable, and the abnormal signal is transmitted to the PLC. After receiving the abnormal signal, the PLC immediately sends a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system cuts off the power supply to the motor, and the conveyor belt stops running, completing the emergency stop protection. Step S3: To address special situations, such as small foreign objects failing to contact the wire rope 8 or no material falling from the torn section, the detector 3 at the other end of the conveyor belt plays a supplementary detection role. The detector 3 monitors the surface and operating status of the conveyor belt in real time. When a tear occurs in the conveyor belt but is not detected by the wire rope detection component 2, the detector 3 can capture the characteristic signal generated by the tear and send the signal to the PLC. After receiving the abnormal signal, the PLC immediately sends a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system cuts off the motor power, and the conveyor belt stops running, completing the emergency stop protection.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A tear-resistant detection device, characterized in that: It includes a buffer bed (1), multiple sets of wire rope detection components (2) and a detector (3). The buffer bed (1) and the detector (3) are respectively set at both ends of the conveyor belt. The buffer bed (1) is set below the conveyor belt at one end of the discharge port. The multiple sets of wire rope detection components (2) are set between the buffer bed (1) and the detector (3) and are distributed at intervals along the length of the conveyor belt below the conveyor belt. The buffer bed (1) includes a plurality of primary buffer components (4) and secondary buffer components (5) arranged in an alternating manner. The primary buffer components (4) are provided with a plurality of buffer rollers (6) along the width direction of the conveyor belt. The secondary buffer components (5) are provided with a plurality of buffer pads (7) along the width direction of the conveyor belt. The height of the buffer rollers (6) is higher than that of the buffer pads (7). The wire rope detection assembly (2) includes an upper wire rope (8), the two ends of which are respectively connected to two upper pull rope switches (9).

2. The anti-tear detection device according to claim 1, characterized in that: The primary buffer assembly (4) includes a primary buffer frame (10), and the buffer roller (6) is horizontally arranged at the center of the primary buffer frame (10). The buffer rollers (6) on both sides of the central buffer roller (6) are inclined upward and outward.

3. The anti-tear detection device according to claim 2, characterized in that: The primary buffer frame (10) is vertically provided with unidirectional support frames (11) on both sides, and two bidirectional support frames (12) are vertically spaced on the inner side of the primary buffer frame (10). The two sides of the central buffer roller (6) are respectively connected to the inner side of the two bidirectional support frames (12), and the two ends of the buffer rollers (6) on both sides are respectively connected to the unidirectional support frame (11) and the outer side of the bidirectional support frame (12).

4. The anti-tear detection device according to claim 1, characterized in that: The first-level buffer frame (10) is provided with first-level buffer springs (13) at both ends. The top end of the first-level buffer spring (13) is fixed on the first-level buffer frame (10), and the bottom end of the first-level buffer spring (13) is fixed on the first-level movable part (14). The bottom of the first-level movable part (14) is provided with a first-level guide bolt (15) that passes through the first-level movable part (14), the first-level buffer spring (13) and the first-level buffer frame (10) from bottom to top. The top end of the first-level guide bolt (15) is provided with a first-level guide nut (16).

5. The anti-tear detection device according to claim 1, characterized in that: The secondary buffer assembly (5) includes a secondary buffer frame (17), and the buffer pad (7) is horizontally arranged at the center of the secondary buffer frame (17). The buffer pads (7) on both sides of the central buffer pad (7) are inclined upward and outward.

6. The anti-tear detection device according to claim 5, characterized in that: A horizontal support frame (18) is provided at the center of the secondary buffer frame (17), and inclined support frames (19) are provided on both sides of the horizontal support frame (18).

7. The anti-tear detection device according to claim 1, characterized in that: The two ends of the secondary buffer frame (17) are provided with secondary buffer springs (20). The top end of the secondary buffer spring (20) is fixed on the secondary buffer frame (17), and the bottom end of the secondary buffer spring (20) is fixed on the secondary movable part (21). The bottom of the secondary movable part (21) is provided with a secondary guide bolt (22) that passes through the secondary movable part (21), the secondary buffer spring (20) and the secondary buffer frame (17) from bottom to top. The top end of the secondary guide bolt (22) is provided with a secondary guide nut (23).

8. The anti-tear detection device according to claim 1, characterized in that: The wire rope detection assembly (2) includes a fixed frame (24), and multiple upper fixed pulleys (25) are spaced apart on the upper part of the fixed frame (24). The height of the upper fixed pulleys (25) on both sides is higher than that of the upper fixed pulley (25) in the middle position. The upper wire rope (8) passes through the groove of each upper fixed pulley (25) in sequence and its two ends are respectively connected to the upper pull rope switches (9) on both sides.

9. The anti-tear detection device according to claim 1, characterized in that: The fixed frame (24) is provided with lower fixed pulleys (26) on both sides below, and a lower steel wire rope (27) is provided on the lower fixed pulleys (26). The lower steel wire rope (27) passes through the groove of each lower fixed pulley (26) in sequence and its two ends are respectively connected to the pull rope switches (28) on both sides.

10. A detection method for the anti-tear detection device as described in any one of claims 1-9, characterized in that: Includes the following steps: Step S1: When the material falls from the discharge port onto the conveyor belt, the buffer bed (1) immediately activates the all-round buffer protection mechanism; the first-level buffer component (4) at the top first contacts the conveyor belt, and the buffer roller (6) can absorb and disperse the impact force and vibration generated by the material during the fall, forming the first layer of buffer barrier; while the staggered first-level buffer component (4) and second-level buffer component (5) together serve as the second layer of protection, and the buffer pad (7) flexibly contacts the remaining impact force transmitted by the conveyor belt, complementing the buffer roller (6) and avoiding overload of the single buffer structure; at the same time, the first-level buffer spring and the second-level buffer spring work synchronously, absorbing high-frequency vibration energy through elastic deformation, forming the third layer of buffer defense; this triple buffer synergy can effectively weaken the impact force when the material falls, control the instantaneous stress on the conveyor belt within the safe threshold, and reduce the possibility of tearing caused by material impact from the source; Step S2: When a foreign object tears the conveyor belt, the foreign object and the material being conveyed on the conveyor belt will fall from the tear. The foreign object and the material will touch the upper wire rope (8), and the tension of the upper wire rope (8) will change. After the upper pull rope switch (9) senses the abnormal tension of the upper wire rope (8), the internal mechanical structure triggers the contact action and sends an electrical signal. The output signal of the upper pull rope switch (9) is connected to the input module of the PLC that controls the operation of the conveyor belt through the cable, and the abnormal signal is transmitted to the PLC. After receiving the abnormal signal, the PLC immediately sends a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system cuts off the motor power supply, and the conveyor belt stops running, thus completing the emergency stop protection. Step S3: To deal with some special situations, such as the foreign object being too small to touch the wire rope (8) or the material falling from the torn part, the detector (3) set at the other end of the conveyor belt plays a supplementary detection role; the detector (3) monitors the surface and running status of the conveyor belt in real time; when the conveyor belt is torn but not detected by the wire rope detection component (2), the detector (3) can capture the characteristic signal generated by the tear and send the signal to the PLC. After receiving the abnormal signal, the PLC immediately sends a stop signal to the drive motor control system of the conveyor belt. After receiving the stop command from the PLC, the drive motor control system cuts off the motor power supply, the conveyor belt stops running, and the emergency stop protection is completed.

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