A carton chain conveyor belt and method for self-detecting segmented connection

Abstract

The present invention discloses a self-detecting segmented connected carton chain conveyor belt and method, which relate to the field of transmission equipment. In the present invention: the conveyor belt includes a frame, a transmission chain, a base and a transverse strip, the base is fastened by static friction with the transverse strip connection part through an insert roller, and the teeth and grooves on both sides of the transverse strip are staggered and inserted into each other. A first sensing mechanism and a second sensing mechanism are provided below the lower transmission chain to respectively detect the transverse strip gap and the support part distance, and the indicator light changes color to prompt when an abnormality occurs. During operation, the transmission chain drives the base and the transverse strip to transport cartons, and the sensing mechanism monitors in real time. When an abnormality occurs, it can be located and repaired, and only a single transverse strip needs to be replaced. The present invention solves the problems of low transmission efficiency, high maintenance cost and difficult fault location of traditional transmission equipment, and improves transmission stability and production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of transmission equipment, and in particular to a carton chain conveyor belt and method for self-detecting segmented connection. Background Art

[0002] In the modern logistics and packaging industry, carton transport is a key link in the production process. Its transport efficiency and the convenience of equipment maintenance directly affect the overall production efficiency. Traditional carton transport equipment generally uses rollers to drive belts. This transmission method has exposed the following significant defects in long-term operation:

[0003] 1. Transmission efficiency degradation: Belts, as core transmission components, experience significant wear and deformation due to friction during continuous load operation. Over time, the belt surface roughness decreases, reducing friction between the belt and the rollers, leading to slippage. This not only reduces transmission speed stability but can also cause delays in carton delivery, severely impacting coordination between upstream and downstream processes and reducing overall production line efficiency.

[0004] Second, maintenance costs are high and time-consuming: When traditional transmission equipment malfunctions, the entire transmission system must be shut down and disassembled. Because the belt is usually a continuous, integral structure, even if only a local anomaly (such as wear or breakage) occurs, the entire belt must be removed and replaced, resulting in wasted production costs. This process is not only cumbersome and labor-intensive, but also time-consuming and can cause the production line to be idle for extended periods, resulting in significant economic losses.

[0005] Furthermore, traditional transmission systems lack real-time detection and fault location mechanisms. When transmission anomalies occur, operators struggle to quickly determine the fault location and type. Manual troubleshooting, often section by section, is often necessary, further extending downtime and reducing production continuity.

[0006] In summary, existing carton conveying technology has significant shortcomings in terms of conveying efficiency, ease of maintenance, and cost control. Ensuring efficient and stable conveyor belt operation, rapid fault detection, and precise maintenance, while reducing unnecessary resource waste, has become a pressing technical challenge in this field. Summary of the Invention

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention provides a carton chain conveyor belt with self-detecting segmented connections, which includes a frame and a transmission chain wound around the frame. The transmission chain is equipped with a plurality of equally spaced bases, the bases including a transverse plate located above the transmission chain, a group of shafts fixedly installed above the transverse plate, and rollers rotatably installed on the periphery of the shafts.

[0009] A horizontal strip is installed on the upper side of two adjacent bases. The horizontal strip includes a support part for supporting the carton and two connecting parts located on the lower side of the support part. One of the connecting parts of the horizontal strip is tightly connected to the insertion roller of one base, and the other connecting part of the horizontal strip is tightly connected to the adjacent insertion roller of the adjacent base.

[0010] First side tooth grooves are arranged at equal intervals on one side of the horizontal strip, and second side tooth grooves are arranged at equal intervals on the other side. The first side tooth grooves of the horizontal strip are staggered and inserted with the second side tooth grooves of the adjacent horizontal strip.

[0011] A first sensing mechanism and a second sensing mechanism for detecting the lower horizontal strips are arranged below the lower transmission chain. The first sensing mechanism is provided with two photoelectric signal probes for detecting the gaps between adjacent horizontal strips, and the second sensing mechanism is provided with a distance probe facing the support part. The first sensing mechanism and the second sensing mechanism are both independently provided with indicator lights.

[0012] As an optimal technical solution for the transmission belt of the present invention: chain connecting plates are provided on both sides of the bottom surface of the horizontal plate to cooperate with the transmission chain, and the transmission chain is located in the inner surrounding area of the chain connecting plates on both sides of the bottom surface of the horizontal plate.

[0013] As a preferred technical solution for the conveyor belt of the present invention, a first set of side panels is provided on one side of the top surface of the horizontal plate, and a second set of side panels aligned with the first set are provided on the other side. The first set of side panels has slots for inserting caps, and the second set of side panels has holes for inserting rods. A shaft is provided with an end cap at one end and a threaded portion is provided on the ring side of the shaft at the other end. The shaft passes through the slots for inserting caps and the holes for inserting rods, and a nut is installed. The insert roller is rotatably mounted between the aligned first and second side panels.

[0014] As a preferred technical solution for the transmission belt of the present invention: a rod hole is provided at the transverse axis center position of the inserting roller, and the shaft rod movably passes through the rod hole of the inserting roller.

[0015] As a preferred technical solution of the transmission belt of the present invention, a transverse slot is provided at the beginning of the connection portion, the inner wall surface of the transverse slot is a rough surface, and the outer ring surface of the insertion roller is a rough ring surface, and the insertion roller is squeezed into the transverse slot of the connection portion to form a static friction connection.

[0016] As a preferred technical solution for the transmission belt of the present invention, the width of the first side tooth groove and the second side tooth groove of the transverse strip are the same.

[0017] As a preferred technical solution for the transmission belt of the present invention: the two photoelectric signal probes of the first sensing mechanism are installed tightly together, and the horizontal spacing size of the photoelectric signals vertically emitted by the two photoelectric signal probes is larger than the assembly gap error of two adjacent horizontal strips.

[0018] The present invention provides a method for using a carton chain conveyor belt, comprising the following contents:

[0019] In the first link, the transmission chain is wound around the frame and rotates, and multiple equally spaced bases installed on the transmission chain move along with the transmission chain.

[0020] In the second step, the outer periphery of the shaft fixedly installed above the horizontal plate of the base is rotatably installed with an insert roller, and the upper sides of the two adjacent bases are tightly connected to the connecting part of the horizontal strip through the insert roller, so that the horizontal strip moves with the base.

[0021] In the third stage, multiple tightly connected horizontal belts move along the direction of movement of the transmission chain to transport the carton pieces.

[0022] In the fourth step, the first sensing mechanism below the lower transmission chain detects the gaps between adjacent horizontal strips of the lower layer through two photoelectric signal probes to determine whether the transmission chain or base is abnormally loose or whether the horizontal strips are misaligned.

[0023] In step five, the second sensing mechanism below the lower transmission chain detects the distance to the lower base support part through the distance probe to determine whether there is any abnormality in the transmission chain, base or horizontal strip.

[0024] Step six: When the first sensor mechanism or the second sensor mechanism detects an abnormal signal, the corresponding indicator light changes from green to red and the system issues a prompt.

[0025] In step seven, after the system detects an abnormal signal on the conveyor belt, the conveyor belt continues to work. When it is ready for maintenance, the maintenance personnel presses the maintenance button on the control panel and the conveyor belt rotates again.

[0026] Step eight: When the system detects an abnormal signal again through the first sensor mechanism or the second sensor mechanism, the conveyor belt stops moving. The maintenance personnel quickly find the abnormal position of the horizontal strip according to the prompts of the indicator light, and perform corresponding maintenance or disassemble and replace the worn or deformed horizontal strip.

[0027] Compared with the existing technology, the beneficial effects of the present invention are:

[0028] 1. This invention utilizes a combination of a transmission chain and segmented horizontal belts, secured by static friction between rollers and the belt connection, thus avoiding the slippage problem associated with conventional belts due to overall wear. The first and second side tooth grooves of the horizontal belts are interlaced and interlocked, ensuring a seamless connection between adjacent horizontal belts. This prevents squeezing or friction even when the transmission chain turns, improving transmission stability. Furthermore, the rollers can freely rotate relative to the shaft, while the rollers are firmly connected to the belt connection. This ensures that friction during belt movement is primarily borne by the rollers, reducing direct wear on the connection and extending the belt's service life.

[0029] 2. In the present invention, the horizontal strips are independently connected to the base through insert rollers. When a section of the horizontal strip is worn or deformed, only a single horizontal strip needs to be removed for replacement, without stopping the machine to disassemble the entire conveyor belt, which greatly reduces maintenance time and resource waste.

[0030] 3. The present invention improves the comprehensiveness of detection of various components of the conveyor belt through the gap detection mode of the first sensing mechanism and the distance detection mode of the second sensing mechanism, and can quickly locate the fault position through dynamic coordination of indicator lights, avoiding manual section-by-section troubleshooting and shortening downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the chain conveyor belt of the present invention.

[0032] Figure 2 for Figure 1 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0033] Figure 3 It is a schematic diagram of the connection structure of the base and the horizontal strip in the present invention.

[0034] Figure 4 for Figure 3 Schematic diagram of the bottom side of the structure.

[0035] Figure 5 This is a schematic diagram of the disassembly and separation of the base, horizontal strips and related components in the present invention.

[0036] Figure 6 Schematic diagram of the structure of the horizontal strip in the present invention.

[0037] Figure 7 This is a top view of the staggered distribution of the first side tooth grooves and the second side tooth grooves of the horizontal strip.

[0038] Among them: 1-frame; 2-transmission chain; 3-base, 301-transverse plate, 302a-first side plate, 302b-second side plate, 3021-embedded cap slot, 3022-rod through hole, 3023-nut, 303-chain connecting plate; 4-transverse strip, 401-support part, 402-connecting part, 403-transverse slot, 404-first side tooth groove, 405-second side tooth groove; 5-insertion roller, 501-rough annular surface, 502-rod hole; 6-shaft rod, 601-end cap, 602-threaded part; 7-first sensing mechanism; 8-second sensing mechanism; 9-photoelectric signal probe; 10-distance probe; 11-indicator light; 12-carton piece. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] Example 1: The present invention designs a self-detecting segmented carton chain conveyor belt, such as Figure 1 、 Figure 2 、 Figure 5 , including a frame 1, a transmission chain 2, a base 3, a horizontal strip 4, an inserting roller 5, a shaft 6, a first sensor mechanism 7, a second sensor mechanism 8 and other components. The specific structural configuration is as follows:

[0041] like Figure 1 , the frame 1 serves as the support frame of the conveyor belt and is used to install components such as the transmission chain 2. The transmission chain 2 is wound around the frame 1 and drives the base 3 to move by rotation. It is the core transmission component of the conveyor belt.

[0042] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The base 3 is installed on the transmission chain 2 and is evenly spaced, including a transverse plate 301, a first side plate 302a, and a chain connecting plate 303. The transverse plate 301 is located above the transmission chain 2 and serves as the main support structure of the base 3. The first side plate 302a is a group of side plates arranged on one side of the top surface of the transverse plate 301, and is provided with a cap slot 3021. The second side plate 302b is a group of side plates arranged on the other side of the top surface of the transverse plate 301, aligned with the first side plate 302a, and is provided with a rod through-hole 3022. The chain connecting plate 303 is fixedly connected to both sides of the bottom surface of the transverse plate 301. The chain connecting plate 303 is installed in conjunction with the transmission chain 2, and the transmission chain 2 is located on its inner side to prevent the transmission chain 2 from being exposed.

[0043] like Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 The horizontal strip 4 is arranged across the upper side of two adjacent bases 3. The horizontal strip 4 includes a support portion 401, a connecting portion 402, a horizontal slot 403, a first side tooth groove 404, and a second side tooth groove 405. The support portion 401 is located on the upper side of the horizontal strip 4 and is used to support the carton 12. The connecting portion 402 is located on the lower side of the supporting portion 401. Each horizontal strip 4 has a connecting portion 402 at both ends, which is fastened to the base 3 through the insertion roller 5. Combined Figure 7 First side tooth grooves 404 are arranged at equal intervals on one side of the horizontal strip 4, and second side tooth grooves 405 are arranged at equal intervals on the other side of the horizontal strip 4. The first side tooth grooves 404 of the horizontal strip 4 are staggered and fitted with the second side tooth grooves 405 of the adjacent horizontal strip 4, wherein the first side tooth grooves 404 and the second side tooth grooves 405 have the same width.

[0044] like Figure 3 、 Figure 5 The inserting roller 5 is rotatably mounted on the outer periphery of the shaft 6 of the base 3 and is provided with a roughened annular surface 501 and a rod hole 502. The roughened annular surface 501 is located on the outer annular surface of the inserting roller 5 and mates with the roughened inner surface of the transverse slot 403 to form a static friction connection. The rod hole 502 is provided at the transverse axis of the inserting roller 5, through which the shaft 6 extends, allowing the inserting roller 5 to rotate freely relative to the shaft 6.

[0045] like Figure 4 、 Figure 5 The shaft 6 is fixedly mounted above the horizontal plate 301 of the base 3 and is used to rotatably support the inserting roller 5. It includes an end cap 601 and a threaded portion 602. The end cap 601 is a hexagonal cap at one end of the shaft 6 that fits into the cap-inserting slot 3021 of the first side plate 302a. The other end of the shaft 6 has a threaded portion 602, which passes through the rod through-hole 3022 of the second side plate 302b and is secured by a nut 3023.

[0046] like Figure 1 、 Figure 2 The first sensor mechanism 7, located below the lower transmission chain 2, is used to detect gaps between adjacent horizontal strips 4. It includes two photoelectric signal probes 9, which fit tightly together and emit photoelectric signals vertically upward. The spacing between the two photoelectric signal probes 9 is greater than the assembly gap error between adjacent horizontal strips 4. The first sensor mechanism 7 is equipped with an indicator light 11, which turns from green to red when an anomaly is detected.

[0047] like Figure 1 、 Figure 2 The second sensing mechanism 8 is located below the lower transmission chain 2, directly opposite the support portion 401 of the horizontal belt 4. The second sensing mechanism 8 is equipped with a distance probe 10 for detecting the distance from the support portion 401 and determining whether the component is abnormal. The second sensing mechanism 8 is also equipped with an indicator light 11, which turns from green to red when an abnormality is detected.

[0048] Example 2: The assembly method of the main components of the transmission belt of the present invention is as follows:

[0049] First, align the connecting portion 402 on one side of the horizontal strip 4 with the inserting roller 5 of the base 3 and squeeze the inserting roller 5 into the horizontal slot 403 of the connecting portion 402. The inserting roller 5 has a rough outer surface 501, and the inner wall of the horizontal slot 403 is a rough surface. The two are tightly connected through static friction, ensuring that the inserting roller 5 and the connecting portion 402 cannot rotate freely.

[0050] Next, the connecting portion 402 of the horizontal strip 4, with the rollers 5 preliminarily connected, is placed between the first side plate 302a and the second side plate 302b above the base 3. The first side plate 302a defines a capping slot 3021, while the second side plate 302b defines a rod through-hole 3022. Ensure that the capping slot 3021, the rod hole 502 of the roller 5, and the rod through-hole 3022 are aligned. Insert the shaft 6 from one side of the capping slot 3021, passing through the capping slot 3021, the rod hole 502, and the rod through-hole 3022 in that order. One end of the shaft 6 has a hexagonal end cap 601 that fits into the capping slot 3021. The other end has a threaded portion 602 that, after passing through the rod through-hole 3022, is secured with a nut 3023, allowing the roller 5 to rotate freely about the shaft 6.

[0051] Finally, repeat the above steps to install subsequent horizontal strips 4 along the moving direction of the transmission chain 2, ensuring that the second side tooth grooves 405 of the previous horizontal strip 4 are staggered and inserted with the first side tooth grooves 404 of the next horizontal strip 4.

[0052] Through the above steps, the modular assembly of the base 3, the insert roller 5, the shaft 6 and the horizontal strip 4 can be realized, and the static friction connection and the staggered coordination of the teeth and grooves are used to ensure that the transmission belt structure is stable and the transmission is smooth, while facilitating the disassembly and replacement of a single horizontal strip 4 in the later stage.

[0053] Example 3: The operation, detection and maintenance methods of the chain conveyor belt of the present invention are as follows:

[0054] 1. Operation Process

[0055] Power transmission: The transmission chain 2 rotates around the frame 1, driving the equally spaced bases 3 to move synchronously.

[0056] Horizontal strip linkage: The base 3 is tightly connected to the connecting portion 402 of the horizontal strip 4 through the inserting roller 5, so that the horizontal strip 4 moves along the moving direction of the transmission chain 2 with the base 3, forming a continuous transmission surface to support and transport the carton pieces 12.

[0057] 2. Detection Mechanism

[0058] (1) First sensing mechanism 7 (gap detection)

[0059] Function: Monitor the gaps between adjacent horizontal strips 4 to determine whether the transmission chain 2 or base 3 is abnormally loose or whether the horizontal strips 4 are misaligned.

[0060] Structure: Two tightly fitted photoelectric signal probes 9 transmit photoelectric signals vertically upward. The horizontal spacing of the photoelectric signals is greater than the assembly gap error of adjacent horizontal strips 4 to avoid misjudgment.

[0061] Normal state: the horizontal strips 4 are tightly connected, the photoelectric signal is blocked by the horizontal strips 4, and the indicator light 11 is green.

[0062] Abnormal state: If the two probes detect a gap at the same time (the signal is not blocked), it indicates that there is looseness or misalignment, the indicator light 11 turns red, and the system issues an abnormal prompt.

[0063] (2) Second sensing mechanism 8 (distance detection)

[0064] Function: Monitor the distance of the support portion 401 of the horizontal strip 4 to determine whether the transmission chain 2, base 3 or horizontal strip 4 has abnormalities such as deformation and wear.

[0065] Structure: The distance probe 10 is facing the support part 401. The distance probe 10 can use a laser distance measurement or an infrared sensor.

[0066] Normal state: the distance between the support portion 401 and the support portion 401 is within the preset range, and the indicator light 11 is green.

[0067] Abnormal state: If the distance exceeds the standard, such as the support part 401 sinks or bulges, it means that the component is abnormal, the indicator light 11 turns red, and the system issues an abnormal prompt.

[0068] 3. Maintenance process

[0069] When the system detects an abnormal signal, the conveyor belt continues to run and does not stop immediately to avoid affecting the continuity of the production line. The corresponding indicator light 11 changes from green to red, notifying the operator that there is a fault, but the system retains the abnormal record and requires manual reset.

[0070] After the maintenance personnel confirm that the machine can be shut down, they press the "Maintenance" button on the control panel. The conveyor belt will continue to rotate until it detects an abnormal signal again and automatically stops. After the conveyor belt stops, the abnormal horizontal strip 4 is quickly located according to the indicator light 11. If it is slightly loose or misaligned, adjust the base 3 or the drive chain 2 connection. If the horizontal strip 4 is severely worn or deformed, simply remove the abnormal horizontal strip 4 and replace it with a new one without disassembling the entire conveyor belt.

[0071] After the inspection is completed, the system abnormal signal is manually reset, the indicator light 11 returns to green, and the conveyor belt is put into operation again.

[0072] The present invention systematically solves the problems of low transmission efficiency, high maintenance cost and difficult fault location of traditional transmission equipment through a segmented chain transmission structure, dual-sensor real-time detection and modular maintenance design, significantly improving the stability, intelligence level and production efficiency of carton transmission, and meeting the demand of modern logistics and packaging industries for high-efficiency and low-cost equipment.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions 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 self-detecting segmented carton chain conveyor belt, comprising a frame (1), a transmission chain (2) wound around the frame (1), and characterized in that: The transmission chain (2) is equipped with a plurality of equally spaced bases (3); The base (3) comprises a transverse plate (301) located above the transmission chain (2), a group of shafts (6) are fixedly mounted above the transverse plate (301), and the shafts (6) are rotatably mounted on the periphery of the shafts (5); A horizontal strip (4) is installed on the upper side of two adjacent bases (3), and the horizontal strip (4) includes a support portion (401) for supporting the carton piece (12) and two connecting portions (402) located on the lower side of the support portion (401), wherein one connecting portion (402) of the horizontal strip (4) is tightly connected to the insertion roller (5) of one base (3), and the other connecting portion (402) of the horizontal strip (4) is tightly connected to the adjacent insertion roller (5) of the adjacent base (3); One side of the transverse strip (4) is provided with first side tooth grooves (404) at equal intervals, and the other side is provided with second side tooth grooves (405) at equal intervals, and the first side tooth grooves (404) of the transverse strip (4) are staggered and inserted into the second side tooth grooves (405) of the adjacent transverse strip (4); A first sensing mechanism (7) and a second sensing mechanism (8) for detecting the lower horizontal strip (4) are arranged below the lower transmission chain (2). The first sensing mechanism (7) is provided with two photoelectric signal probes (9), and the second sensing mechanism (8) is provided with a distance probe (10). The first sensing mechanism (7) and the second sensing mechanism (8) are both independently provided with indicator lights (11).

2. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: Chain connecting plates (303) are provided on both sides of the bottom surface of the transverse plate (301) and are mounted in cooperation with the transmission chain (2). The transmission chain (2) is located in the inner surrounding area of the chain connecting plates (303) on both sides of the bottom surface of the transverse plate (301).

3. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: A group of first side panels (302a) is provided on one side of the top surface of the transverse plate (301), and a group of second side panels (302b) aligned with the first side panels (302a) is provided on the other side; The first side plate (302a) is provided with a cap-embedding slot hole (3021), and the second side plate (302b) is provided with a rod through hole (3022); One end of the shaft rod (6) is provided with an end cap (601), and the other end of the shaft rod body is provided with a threaded portion (602). The shaft rod (6) passes through the cap slot (3021), the rod through hole (3022), and is installed with a nut (3023). The inserting roller (5) is rotatably mounted between the first side plate (302a) and the second side plate (302b) which are aligned in position.

4. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: A rod hole (502) is provided at the transverse axis center position of the inserting roller (5), and the shaft (6) movably passes through the rod hole (502) of the inserting roller (5).

5. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: The connecting portion (402) is provided with a transverse slot (403), and the inner wall surface of the transverse slot (403) is a rough surface; The outer annular surface of the inserting roller (5) is a rough annular surface (501), and the inserting roller (5) is squeezed and inserted into the transverse slot (403) of the connecting portion (402) to form a static friction connection.

6. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: The first side tooth groove (404) and the second side tooth groove (405) of the transverse strip (4) have the same width.

7. The self-detecting segmented carton chain conveyor according to claim 1, characterized in that: The two photoelectric signal probes (9) of the first sensing mechanism (7) are tightly fitted together, and the horizontal spacing between the photoelectric signals vertically emitted upward by the two photoelectric signal probes (9) is greater than the assembly gap error between two adjacent horizontal strips (4).

8. A method for using a carton chain conveyor belt, applied to a carton chain conveyor belt with self-detecting segmented connections according to any one of claims 1 to 7, characterized in that: In the first link, a transmission chain (2) is wound around a frame (1) and rotates, and a plurality of equally spaced bases (3) mounted on the transmission chain (2) move along with the transmission chain (2); In step 2, the shaft (6) fixedly installed above the horizontal plate (301) of the base (3) is rotatably installed with an insert roller (5) on its periphery, and the upper sides of two adjacent bases (3) are tightly connected to the connecting portion (402) of the horizontal strip (4) through the insert roller (5), so that the horizontal strip (4) moves with the base (3); In step three, a plurality of closely connected transverse strips (4) move along the direction of motion of the transmission chain (2) to transport the carton pieces (12); In step 4, the first sensing mechanism (7) below the lower transmission chain (2) detects the gaps between adjacent lower horizontal strips (4) through two photoelectric signal probes (9) to determine whether the transmission chain (2) and the base (3) are abnormally loose or whether the horizontal strips (4) are misaligned; In step five, the second sensing mechanism (8) below the lower transmission chain (2) detects the distance to the support portion (401) of the lower base (3) through the distance probe (10) to determine whether there is any abnormality in the transmission chain (2), the base (3) or the horizontal strip (4); Step six: when the first sensing mechanism (7) or the second sensing mechanism (8) detects an abnormal signal, the corresponding indicator light (11) changes from green to red, and the system issues a prompt; Step 7: After the system detects an abnormal signal on the conveyor belt, the conveyor belt continues to work. When it is ready for maintenance, the maintenance personnel press the maintenance button on the control panel and the conveyor belt rotates again; Step eight: When the system detects an abnormal signal again through the first sensor mechanism (7) or the second sensor mechanism (8), the conveyor belt stops moving, and the maintenance personnel quickly find the abnormal position of the horizontal strip (4) according to the prompt of the indicator light (11), and perform corresponding maintenance or disassemble and replace the worn or deformed horizontal strip (4).

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