Vulcanized joint structure with stretching detection function

Abstract

The utility model provides a vulcanization joint structure with a stretching detection function, which relates to the technical field of vulcanization joints and comprises a vulcanization joint body used for connecting two ends of a conveying belt. The strain type sensor is arranged in the vulcanization joint body and used for monitoring the tensile deformation amount of the joint in real time; the signal processing and early warning module is electrically connected with the strain sensor and is used for processing a signal of the strain sensor; and the power supply module is electrically connected with the strain type sensor and the signal processing early warning module and is used for supplying power to all the modules, and the technical problems that in the prior art, vulcanization joint detection cannot be quantified, detection is difficult in the operation process, and detection is not timely are solved.

Description

Technical Field

[0001] This utility model mainly relates to the field of vulcanized joint technology, specifically to a vulcanized joint structure with tensile testing function. Background Technology

[0002] Belt conveyors are widely used in industries such as mining, ports, and power for transporting bulk materials over long distances. Due to the long conveying distances and the limited length of a single belt, multiple belt sections are typically joined together to form an extra-long conveyor belt using vulcanized joints. Vulcanized joints employ a hot vulcanization process to bond the rubber layer at the belt end to the reinforcing layer (such as steel wire rope or fabric), forming a high-strength connection.

[0003] However, in actual operation, the vulcanized joint remains the weakest link in the entire conveyor belt. The main reasons include: long-term dynamic load effects: belt conveyors are subjected to alternating tensile, bending, and impact loads during operation, and the vulcanized joint is prone to gradual deterioration due to fatigue; vulcanization process defects: if the vulcanization temperature, pressure, or time is not properly controlled, the joint bonding strength is insufficient, and local delamination or breakage is likely to occur; lack of real-time monitoring methods: currently, it mainly relies on manual periodic inspections, which makes it difficult to detect early damage at the joint in time. Once the joint breaks, it may lead to the failure of the entire belt, causing serious downtime accidents and economic losses.

[0004] In existing technologies, visual inspection of conveyor belt joints relies on experience and cannot quantify the tensile state of the joints; ultrasonic testing equipment is complex and requires shutdown for testing, making it unsuitable for online monitoring; vibration sensor monitoring can indirectly reflect the belt's operating status but cannot accurately measure the tensile deformation of the joints.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This utility model provides a vulcanized joint structure with tensile testing function to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is: a vulcanized joint structure with tensile testing function, comprising...

[0010] Vulcanized joint body, used to connect the two ends of a conveyor belt;

[0011] A strain gauge sensor is installed inside the vulcanized joint body to monitor the tensile deformation at the joint in real time.

[0012] A signal processing and early warning module is electrically connected to the strain gauge sensor and is used to process the strain gauge sensor signal.

[0013] The power supply module is electrically connected to the strain gauge sensor and the signal processing and early warning module, and is used to supply power to each module.

[0014] When this device is in operation, a strain gauge sensor, a signal processing and early warning module, and a power supply module are installed at the vulcanization joint body of the conveyor belt. During the vulcanization connection operation, the strain gauge sensor can detect the tensile deformation of the vulcanization joint body. Therefore, if the tensile amount at the vulcanization joint body exceeds the preset value, the signal processing and early warning module will send a signal to the operator to request maintenance and repair, thereby reducing the occurrence of direct joint breakage.

[0015] Furthermore, the vulcanized joint body includes two interlocking L-shaped belt heads, and at least one of the L-shaped belt heads has multiple structural placement grooves inside.

[0016] Furthermore, the structure includes a strip-shaped groove in which the strain gauge sensor is placed. A square groove is provided at the rear end of the strip-shaped groove in which the signal processing and early warning module is placed. A power supply groove is provided on the side of the square groove in which the power supply module can be detachably installed.

[0017] Furthermore, the strain gauge sensor, signal processing and early warning module, and power supply module are fixed in the L-shaped belt head groove using a high-temperature resistant adhesive.

[0018] Furthermore, the strain sensor is a metal foil strain gauge.

[0019] Furthermore, the vulcanized joint body is suitable for steel wire rope core conveyor belts or fabric core conveyors.

[0020] Furthermore, an opening and closing cover is provided at the power supply slot.

[0021] Furthermore, one of the L-shaped belt heads is provided with a concave groove, and the other L-shaped belt head is provided with a snap-fit ​​protrusion, the snap-fit ​​protrusion and the concave groove snapping into each other.

[0022] 3. Beneficial effects:

[0023] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0024] This utility model is reasonably designed. It uses a built-in strain gauge sensor to detect the tensile deformation of the vulcanized joint in real time and provides timely warnings when the pre-set threshold is reached, effectively preventing joint breakage accidents and significantly improving the safety of the conveying system.

[0025] An L-shaped belt head and a dedicated groove structure are used to achieve embedded installation of the sensor module, which ensures both monitoring accuracy and the original mechanical strength of the vulcanized joint is not affected.

[0026] The modular design, along with replaceable power supplies and standardized sensor interfaces, significantly reduces maintenance difficulty and is compatible with various conveyor belt types, making it widely applicable.

[0027] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure at the connection point of the conveyor belt in this utility model;

[0029] Figure 2 This is a schematic diagram of the unvulcanized connection of this utility model;

[0030] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0031] Figure 4 This is a schematic diagram of the L-shaped belt buckle of this utility model;

[0032] Figure 5 This utility model Figure 4 Enlarged schematic diagram of the structure at point B.

[0033] Figure label:

[0034] 1. Vulcanized joint body; 2. Strain gauge sensor; 3. Signal processing and early warning module; 4. Power module; 5. L-shaped belt head; 11. Strip groove; 12. Square groove; 13. Power groove; 131. Opening and closing cover plate; 51. Concave slot; 52. Snap-fit ​​protrusion. Detailed Implementation

[0035] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0036] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] It should be noted that structures not described in this invention do not involve the design points and improvement directions of this invention, and can all be achieved using existing technologies known to those skilled in the art.

[0040] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] See attached document Figure 1-5 A vulcanized joint structure with tensile testing function, comprising:

[0042] Vulcanized joint body 1, used to connect the two ends of the conveyor belt;

[0043] A strain sensor 2 is installed inside the vulcanized joint body 1 to monitor the tensile deformation at the joint in real time.

[0044] The signal processing and early warning module 3 is electrically connected to the strain gauge sensor 2 and is used to process the signal from the strain gauge sensor 2.

[0045] Power module 4 is electrically connected to strain gauge sensor 2 and signal processing early warning module 3, and is used to supply power to each module;

[0046] When this device is working, a strain gauge sensor 2, a signal processing and early warning module 3, and a power supply module 4 are installed at the vulcanization joint body 1 of the conveyor belt. During the vulcanization connection operation, the strain gauge sensor 2 can detect the tensile deformation of the vulcanization joint body 1. Therefore, if the tensile amount at the vulcanization joint body 1 exceeds the preset value, the signal processing and early warning module 3 will send a signal to the operator to request the operator to carry out maintenance and repair, thereby reducing the occurrence of direct joint breakage.

[0047] The vulcanizing joint body 1 includes two interlocking L-shaped belt heads 5. At least one of the L-shaped belt heads 5 has multiple structural placement grooves. Before the two L-shaped belt heads 5 are connected, the steel wire rope inside the belt is cleaned and polished to remove rust and impurities. A strain gauge sensor 2, a signal processing and early warning module 3, and a power module 4 are installed in the structural placement grooves. A special adhesive is applied to enhance the adhesion with the rubber and form an adhesive layer. The joint is placed between the upper and lower heating plates of the vulcanizing machine, pressure is applied to make the joint fit tightly, the temperature is raised to 140-150℃, and the temperature is maintained for 30-60 minutes for vulcanization.

[0048] The structure includes a strip groove 11, in which the strain gauge sensor 2 is placed. A square groove 12 is provided at the rear end of the strip groove 11, in which the signal processing and early warning module 3 is placed. A power supply groove 13 is opened on the side of the square groove 12, in which the power supply module 4 can be detachably installed. Before the two L-shaped belt heads 5 are vulcanized, the strain gauge sensor 2, the signal processing and early warning module 3 and the power supply module 4 are placed in the corresponding grooves. Sealant can be added as needed to improve the reliability of the device. Then, the grooves of the two L-shaped belt heads 5 are aligned for vulcanization.

[0049] The strain gauge sensor 2, signal processing and early warning module 3, and power supply module 4 are fixed in the slot of the L-shaped belt head 5 with high-temperature resistant adhesive. The high-temperature resistant adhesive facilitates the installation and fixation of each device and improves the stability of the internal structure.

[0050] The strain sensor 2 is a metal foil strain gauge. The selected metal foil strain gauge has a working temperature range of -40℃ to 200℃, which can meet the vulcanization requirements. The signal processing and early warning module 3 monitors the tensile deformation of the metal foil strain gauge in real time. When the deformation of the L-shaped belt head 5 exceeds the preset value, it indicates that there may be a risk of breakage at the vulcanization joint. The signal processing and early warning module issues a warning signal to remind the staff to carry out maintenance. It should be noted that the strain sensor 2 of this application can also use flexible thin film strain sensors, miniature S-shaped tensile sensors, etc. to detect deformation. Specifically, the signals can be from HBM LY41 series, Vishay Micro-Measurements CEA series, TekscanFlexiForce A201, Futek LSB200 series, etc., all of which are detected by the tensile force between the two L-shaped belt heads 5.

[0051] The vulcanized joint body 1 is suitable for steel wire rope core conveyor belts or fabric core conveyors, and the deformation is detected by measuring the size of the deformation.

[0052] A hinged cover 131 is provided at the power slot 13. The hinged cover 131 facilitates the replacement of the battery of the power module 4. The power module 4 can also be wirelessly powered according to the usage scenario.

[0053] One of the L-shaped belt heads 5 is provided with a concave groove 51, and the other L-shaped belt head 5 is provided with a snap-fit ​​protrusion 52. The snap-fit ​​protrusion 52 and the concave groove 51 snap into each other. During the vulcanization operation, the snap-fit ​​protrusion 52 and the concave groove 51 snap into each other, which can improve the tensile strength at the joint.

[0054] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A vulcanized joint structure with tensile testing function, characterized in that: include Vulcanized joint body (1), used to connect the two ends of the conveyor belt; A strain gauge sensor (2) is installed inside the vulcanized joint body (1) to monitor the tensile deformation at the joint in real time; The signal processing and early warning module (3) is electrically connected to the strain sensor (2) and is used to process the signal of the strain sensor (2); The power supply module (4) is electrically connected to the strain sensor (2) and the signal processing and early warning module (3) and is used to supply power to each module.

2. The vulcanized joint structure with tensile testing function according to claim 1, characterized in that: The vulcanized joint body (1) includes two interlocking L-shaped belt heads (5), and at least one of the L-shaped belt heads (5) has multiple structural placement grooves.

3. A vulcanized joint structure with tensile testing function according to claim 2, characterized in that: The structure includes a strip groove (11) in which the strain sensor (2) is placed. A square groove (12) is provided at the rear end of the strip groove (11) in which the signal processing and early warning module (3) is placed. A power supply groove (13) is opened on the side of the square groove (12) in which the power supply module (4) can be detachably installed.

4. A vulcanized joint structure with tensile testing function according to claim 3, characterized in that: The strain gauge sensor (2), the signal processing and early warning module (3), and the power supply module (4) are fixed in the slot of the L-shaped belt head (5) by high-temperature resistant adhesive.

5. A vulcanized joint structure with tensile testing function according to claim 1, characterized in that: The strain sensor (2) is a metal foil strain gauge.

6. A vulcanized joint structure with tensile testing function according to claim 1, characterized in that: The vulcanized joint body (1) is suitable for steel wire rope core conveyor belts or fabric core conveyors.

7. A vulcanized joint structure with tensile testing function according to claim 3, characterized in that: An opening and closing cover (131) is provided at the power supply slot (13).

8. A vulcanized joint structure with tensile testing function according to claim 2, characterized in that: One of the L-shaped belt heads (5) is provided with a concave groove (51), and the other L-shaped belt head (5) is provided with a snap-fit ​​protrusion (52), which snaps into the concave groove (51).

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