Foreign matter tearing prevention device for conveying belt

Abstract

The utility model relates to a foreign matter tearing prevention device for a conveying belt, which comprises a material guide groove positioned above the conveying belt and a blanking chute obliquely arranged on a material blocking groove, the blanking chute comprises a blanking groove, and an expansion groove is arranged on the blanking chute on the side of the belt conveying direction. A movable plate is movably installed between the expansion groove and the discharging groove through a rotating shaft, a contact type trigger mechanism is arranged on the portion, corresponding to the movable plate, of a side plate of the expansion groove in the belt conveying direction, and a detection element used for detecting the position of the contact type trigger mechanism is arranged on the outer side of the expansion groove. And the detection element is electrically connected with a controller and / or an alarm device of the belt conveying motor. By means of ingenious mechanical design and electrical control, real-time detection and protection of foreign matters on the conveying belt are achieved, and safe and stable operation of a production line is guaranteed. By means of the design, production efficiency is improved, and economic losses and maintenance cost of enterprises are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveyor belt equipment, and in particular relates to a conveyor belt anti-tearing device. Background Art

[0002] Conveyor belts, as an indispensable equipment in the daily production activities of factories and mines, undertake the important task of transporting various block or powder materials from one location to another. Figure 7 However, in actual use, since various debris are inevitably mixed in the material, when these debris descends through the chute to the conveyor belt, they may cause a series of problems due to their large size or irregular shape.

[0003] When a large object comes into contact with the conveyor belt, the conveyor belt will try to move the object forward. Since the other end of the object may come into contact with the side wall of the chute, and the other part of the object may get stuck in the chute outlet, a lever structure is formed. When the conveyor belt continues to run, this lever structure will exert a shear force on the conveyor belt, causing the conveyor belt to tear longitudinally.

[0004] Such accidents not only lead to the interruption of the production line and the decline of production efficiency, but also bring additional economic costs to repair and replace the torn conveyor belt. More importantly, if the torn belt is not discovered and handled in time, it may further damage other equipment and even cause more serious safety accidents.

[0005] Therefore, in order to solve the above problems, it is necessary to design a conveyor belt anti-tearing device, which can detect and take measures in time when debris contacts the conveyor belt to prevent foreign objects from damaging the conveyor belt, thereby ensuring the continuous and stable operation of the production line. Utility Model Content

[0006] In view of the problems existing in the prior art, the utility model provides a conveyor belt foreign body tearing prevention device which can timely detect and take measures when foreign objects contact the conveyor belt to prevent the foreign objects from damaging the conveyor belt, thereby ensuring the continuous and stable operation of the production line.

[0007] The utility model is implemented as follows: a conveyor belt anti-tearing device includes a material guide trough located above the conveyor belt, a material discharge chute installed on the material blocking trough and inclined, and is characterized in that: the material discharge chute includes a material discharge trough, and the material discharge chute is provided with an expansion trough on the belt conveying direction side, a movable plate is movably installed between the expansion trough and the material discharge trough through a rotating shaft, a contact trigger mechanism is provided in the expansion trough on the side plate of the expansion trough on the belt conveying direction side corresponding to the movable plate, and a detection element for detecting the position of the contact trigger mechanism is provided on the outer side of the expansion trough, and the detection element is electrically connected to the controller and / or alarm device of the belt conveyor motor.

[0008] Preferably, the contact trigger mechanism includes a trigger rod, and an abutment wheel abutting against the movable plate is installed at the end of the trigger rod on the movable plate side, and the other end of the trigger rod is inserted into the trigger rod guide groove of the expansion groove, and a reset spring is provided on the trigger rod in the expansion groove.

[0009] Preferably, the cross-section of the trigger rod is a square structure, and the corresponding trigger rod guide groove is a square structure.

[0010] Preferably, a spring support for abutting against a reset spring is provided on the trigger rod on the abutting wheel side. Preferably, in the initial state, the distance between the lower end of the movable plate and the conveyor belt is equal to 2 / 3 of the height of the discharge port of the guide trough.

[0011] Preferably, a limiting member parallel to the side wall of the lower material chute is provided on the side wall of the capacity expansion chute at the intersection of the capacity expansion chute and the lower material chute.

[0012] Advantages and technical effects of the utility model: The utility model describes a device for preventing foreign matter from tearing a conveyor belt, the key components of which include a material guide trough located above the conveyor belt and a material discharge chute installed on the material guide trough and inclined. The material discharge chute is divided into a material discharge trough and an expansion trough, both of which are movably installed with a movable plate through a rotating shaft. On the side plate of the expansion trough, a contact trigger mechanism corresponding to the movable plate is provided, and a detection element is provided on the outside of the mechanism. These components work together to realize real-time detection and protection of foreign matter, ensuring the safe operation of the conveyor belt. It has significant advantages and technical effects, which are mainly reflected in the following aspects:

[0013] Real-time monitoring and rapid response: By adopting mechanical principles, the movable plate designed in this utility model can move freely and respond to the running status of foreign objects in real time. This design ensures that the device can quickly identify and respond to foreign objects, effectively avoiding conveyor belt tearing accidents caused by untimely response.

[0014] Accurate detection and reliable triggering: The operating status of the movable plate is accurately reflected to the detection element through the trigger rod, ensuring the accuracy and reliability of the detection. This design avoids the possibility of misjudgment and missed judgment and improves the overall performance of the device.

[0015] Intelligent control and automatic alarm: The detection element is connected to the control system. When a foreign object scratches the conveyor belt, the control system can immediately receive the signal and trigger the alarm mechanism to remind the operator in time. This intelligent control method not only improves production efficiency, but also reduces the frequency and intensity of manual inspections.

[0016] Automatic shutdown and safety assurance: After detecting that a foreign object has scratched the conveyor belt, the control system can respond quickly and automatically stop the operation of the conveyor belt. This automatic shutdown mechanism effectively avoids the expansion of accidents and ensures the safe and stable operation of the production line.

[0017] Simple structure and convenient maintenance: The design structure of the utility model is concise and clear, easy to install and maintain. At the same time, the mechanical principles and electrical components used are mature technologies, which fully guarantees the reliability and stability of the device.

[0018] To sum up, the conveyor belt anti-tearing device described in the utility model effectively solves the problem that traditional conveyor belts are easily torn by debris through real-time monitoring, precise detection, intelligent control, automatic alarm and automatic shutdown mechanisms, significantly improves the safety and stability of the production line, reduces the economic losses and maintenance costs of the enterprise, and has important practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 yes Figure 2 A top view of

[0021] Figure 3 yes Figure 2 Middle AA section view;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the position structure of the movable plate in the initial state;

[0024] Figure 6 This is a schematic diagram of the structure when a foreign object is stuck;

[0025] Figure 7 It is a schematic diagram of the prior art structure.

[0026] In the figure, 1, material guide trough; 2, material discharge chute; 2-1, material discharge trough; 2-2, expansion trough; 3, movable plate; 4, contact trigger; 4-1, trigger rod; 4-2, abutment wheel; 4-3, reset spring; 4-4, spring support; 5, detection element; 6, limiting component; 7, foreign matter. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0028] See also Figures 1 to 6 A device for preventing conveyor belts from being torn by foreign objects comprises a material guide trough 1 located above the conveyor belt, a material discharge chute 2 obliquely installed on the material blocking trough, the material discharge chute comprising a material discharge trough 2-1, an expansion trough 2-2 is provided on the conveying direction side of the belt, a movable plate 3 is movably installed between the expansion trough and the material discharge trough through a rotating shaft, a contact trigger mechanism 4 is provided in the expansion trough corresponding to the movable plate on the side plate of the expansion trough on the conveying direction side of the belt, a detection element 5 for detecting the position of the contact trigger mechanism is provided on the outer side of the expansion trough, and the detection element is electrically connected to the controller and / or alarm device of the belt conveyor motor.

[0029] The movable plate design in the above technical solution: The movable plate moves freely between the feeding trough and the expansion trough through the rotating shaft. This design can reflect the running state of the foreign body in real time. When the foreign body 7 hits the movable plate, the movable plate will shift in the conveying direction. This change can accurately reflect the existence and size of the foreign body, and provide basic data for subsequent alarm and shutdown operations. The contact trigger mechanism in the above technical solution: This mechanism converts the running state of the movable plate into an electrical signal through the direct contact between the trigger rod and the movable plate. The abutment wheel at the end of the trigger rod is in close contact with the movable plate to ensure the accurate transmission of the signal. The reset spring is used to restore the trigger rod and the movable plate to the initial state after the foreign body passes, so as to prepare for the next detection. The detection element in the above technical solution: The detection element can accurately detect the position change of the contact trigger mechanism, and then determine whether there is a foreign body hitting the movable plate. Once an abnormality is detected, it will immediately send a signal to the controller of the belt conveyor motor, trigger the alarm device and shut down, thereby avoiding the conveyor belt from being torn.

[0030] When selecting a detection element for detecting position, factors such as accuracy, response speed, stability, and applicable environment need to be considered. For the conveyor belt foreign body tear prevention device, the detection element needs to be able to accurately detect small changes in the movable plate and respond quickly.

[0031] 1. Infrared switch:

[0032] Advantages: The infrared switch is non-contact, which means it can avoid mechanical wear and potential failure points. In addition, the infrared switch has a fast reaction speed and can quickly detect the position change of the movable plate.

[0033] Disadvantages: Infrared switches can be affected by ambient light, dust, and other interference, leading to false or missed detections. In addition, they require regular calibration to ensure accuracy.

[0034] 2. Mechanical trigger switch:

[0035] Advantages: Mechanical trigger switches have a simple structure, reliable operation, and are not easily affected by environmental interference. Because they are direct contact detection, their accuracy is usually high.

[0036] Disadvantages: Mechanical trigger switches may be at risk of wear and failure, especially in high-frequency, high-load working environments. In addition, they require regular maintenance and cleaning to ensure proper operation.

[0037] Considering the working environment and requirements of the conveyor belt foreign body tearing prevention device, a mechanical trigger switch may be a more suitable choice. This is because the mechanical trigger switch has high precision, can accurately detect small changes in the movable plate, and is not easily disturbed by ambient light or dust. However, in actual applications, it is also necessary to select the most suitable detection element according to specific needs and conditions.

[0038] Preferably, the contact trigger mechanism 4 includes a trigger rod 4-1, and an abutment wheel 4-2 that abuts against the movable plate is installed at the end of the trigger rod on the movable plate side to reduce friction; the other end of the trigger rod is inserted into the trigger rod guide groove of the expansion groove, and a reset spring 4-3 is provided on the trigger rod in the expansion groove.

[0039] Preferably, the cross-section of the trigger rod is a square structure, and the corresponding trigger rod guide groove is a square structure, and the square structure has an anti-rotation constraint function.

[0040] Preferably, a spring support 4 - 4 for abutting a reset spring is provided on the trigger rod on the abutment wheel side to ensure the stability of the spring abutment.

[0041] Preferably, in the initial state, the distance between the lower end of the movable plate and the conveyor belt is equal to 2 / 3 of the height of the discharge port of the guide trough to avoid being too long to block the normal conveying of materials. Preferably, a limiting member 6 is provided on the side wall of the expansion trough at the intersection of the expansion trough and the discharge trough, which is parallel to the side wall of the discharge trough. The limiting member is a baffle or a block, but no baffle is provided in this embodiment. The limiting member provided at the intersection of the discharge trough and the expansion trough is used to limit the maximum offset of the movable plate, to prevent the reduction of the effective cross-sectional area of ​​the discharge trough, and to prevent the discharge of normal materials from being affected, thereby ensuring the stability and reliability of the device.

[0042] Working principle of this utility model:

[0043] When the material enters the discharge chute through the guide chute, most of the material will enter the discharge chute smoothly and slide down it. However, if there are foreign objects mixed in the material, these foreign objects will cause the movable plate to deflect when they hit it. This deflection triggers the contact trigger mechanism, causing the trigger rod to shift. After the detection element detects this displacement, it will immediately send a signal to the controller of the belt conveyor motor. After receiving the signal, the controller will trigger the alarm device and shut down, thus preventing foreign objects from damaging the conveyor belt.

[0044] In summary, the utility model realizes real-time detection and protection of foreign matter on the conveyor belt through ingenious mechanical design and electrical control, ensuring the safe and stable operation of the production line. This design not only improves production efficiency, but also reduces the economic losses and maintenance costs of the enterprise, and has important practical application value.

[0045] 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 protection scope of the present invention.

Claims

1. A conveyor belt anti-tear device, comprising a material guide trough located above the conveyor belt, and a material discharge chute installed on the material blocking trough and arranged obliquely, characterized in that: The material discharge chute includes a material discharge chute, and an expansion chute is provided on the belt conveying direction side of the material discharge chute, a movable plate is movably installed between the expansion chute and the material discharge chute through a rotating shaft, and a contact trigger mechanism is provided in the expansion chute on the side plate of the expansion chute on the belt conveying direction side corresponding to the movable plate, and a detection element for detecting the position of the contact trigger mechanism is provided on the outside of the expansion chute, and the detection element is electrically connected to the controller and / or alarm device of the belt conveying motor.

2. The conveyor belt anti-tear device according to claim 1, characterized in that: The contact trigger mechanism includes a trigger rod, an abutment wheel abutting against the movable plate is installed at the end of the trigger rod on the movable plate side, the other end of the trigger rod is inserted into the trigger rod guide groove of the expansion groove, and a reset spring is provided on the trigger rod in the expansion groove.

3. The conveyor belt anti-tear device according to claim 2, characterized in that: The cross section of the trigger rod is a square structure, and the corresponding trigger rod guide groove is a square structure.

4. The conveyor belt anti-tear device according to claim 2, characterized in that: A spring support for abutting against a reset spring is arranged on the trigger rod at the abutting wheel side.

5. The conveyor belt anti-tear device according to claim 1, characterized in that: In the initial state, the distance between the lower end of the movable plate and the conveyor belt is equal to 2 / 3 of the height of the discharge port of the guide trough.

6. The conveyor belt anti-tear device according to claim 1, characterized in that: A limiting component is provided on the side wall of the capacity expansion groove at the intersection of the capacity expansion groove and the material discharge groove and is parallel to the side wall of the material discharge groove.

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