Coal mining machine roller wear monitoring and early warning device

Abstract

The utility model discloses a coal mining machine roller wear monitoring and early warning device, which belongs to the technical field of coal mining machinery monitoring, and comprises a pair of monitoring semi-rings, a plurality of non-contact displacement sensors and a control module, the two side ends of each monitoring semi-ring are fixedly provided with mounting components, the pair of monitoring semi-rings is assembled into a monitoring ring through the mounting components, and the non-contact displacement sensors are arranged on the monitoring ring. A plurality of uniformly distributed monitoring holes are formed in the inner end of the monitoring semi-ring, the control module comprises a power supply and a microprocessor, the power supply is fixedly installed at the outer end of the monitoring semi-ring, the power supply and the non-contact displacement sensor are electrically connected with the microprocessor, and a plurality of sound-light alarm lamps are further installed at the outer end of the monitoring semi-ring. By adopting the non-contact displacement sensor and the laser measurement technology, the radial displacement change of the surface of the roller caused by abrasion can be monitored in real time, and data processing and abrasion degree calculation are performed through the microprocessor, so that the measurement accuracy and reliability are improved, and the measurement precision is improved. And errors caused by human factors in a traditional monitoring method can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machinery monitoring technology, and more specifically, to a coal mining machine drum wear monitoring and early warning device. Background Technology

[0002] In coal mining, the wear of the drum of the coal mining machine, as a key piece of equipment, directly affects mining efficiency and safety. Drum wear not only reduces cutting efficiency and increases energy consumption, but can also lead to equipment malfunctions and even safety accidents. Therefore, real-time monitoring and early warning of coal mining machine drum wear are of paramount importance.

[0003] Traditional methods for monitoring drum wear mainly rely on periodic manual inspections, which are not only time-consuming and labor-intensive but also difficult to accurately determine the degree of wear. With the development of sensor and intelligent monitoring technologies, more and more automated monitoring devices are being applied in coal mining. However, most existing monitoring devices suffer from problems such as complex installation, low monitoring accuracy, and poor adaptability, making it difficult to meet the needs of actual production. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a coal mining machine drum wear monitoring and early warning device. It adopts a non-contact displacement sensor and laser measurement technology, which can monitor the radial displacement changes on the drum surface caused by wear in real time. The device also uses a microprocessor to process the data and calculate the degree of wear, which not only improves the accuracy and reliability of the measurement, but also avoids errors caused by human factors in traditional monitoring methods.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A coal mining machine drum wear monitoring and early warning device includes a pair of monitoring half-rings, multiple non-contact displacement sensors, and a control module. Mounting components are fixedly installed on both ends of the monitoring half-rings. The pair of monitoring half-rings are assembled into a monitoring ring using the mounting components. Multiple evenly distributed monitoring holes are opened at the inner end of each monitoring half-ring. The number of non-contact displacement sensors is the same as the number of monitoring holes and they are installed inside the monitoring holes. The control module includes a power supply and a microprocessor. The power supply is fixedly installed at the outer end of the monitoring half-rings, and both the power supply and the non-contact displacement sensors are electrically connected to the microprocessor. Multiple audible and visual alarm lights corresponding to the non-contact displacement sensors are also installed at the outer end of the monitoring half-rings, and these audible and visual alarm lights are electrically connected to the microprocessor.

[0009] Furthermore, the mounting assembly includes a mounting block with a pair of mounting holes. A screw is installed in the mounting holes, and matching nuts are threaded onto both sides of the screw. The nuts abut against the side of the mounting block, so that a pair of monitoring half-rings can be aligned and installed into a monitoring ring that matches the coal mining machine drum and remains stable against its surface.

[0010] Furthermore, a guide hole is provided at the center of the mounting block, and a matching guide rod is inserted into the guide hole. Anti-fall blocks are fixedly connected to both ends of the guide rod, which facilitates the alignment and installation of a pair of mounting blocks. During disassembly, there is no need to completely separate them, and a pair of monitoring half rings can be removed as a whole.

[0011] Furthermore, the monitoring half-ring is also equipped with multiple drive components that are staggered with the non-contact displacement sensor. The inner end of the monitoring half-ring has multiple hidden slots corresponding to the drive components. A bonding component is slidably installed in the hidden slot. The drive components can drive the bonding component to move towards the inner side of the monitoring half-ring to fit tightly against the roller, ensuring a tight fit at different wear stages.

[0012] Furthermore, the driving component includes an electromagnet fixedly installed at the outer end of the monitoring semi-ring, and the electromagnet is electrically connected to the microprocessor. A movable groove is formed on the bottom wall of the hidden groove, and a matching movable column is slidably installed in the movable groove. A pair of symmetrically distributed sliding grooves are formed on the side wall of the movable groove, and a matching magnetic slider is slidably installed in the sliding groove. A compression spring is fixedly connected between the magnetic slider and the bottom wall of the sliding groove. The electromagnet applies a repulsive magnetic field to the magnetic slider, causing it to overcome the elastic force of the compression spring and drive the movable column to move, thereby acting on the bonding component so that it can be tightly attached to the roller surface.

[0013] Furthermore, the bonding assembly includes a bonding plate fixedly connected to the moving column. The outer end of the bonding plate is covered with a flexible pad. A pressure sensor is installed between the bonding plate and the flexible pad, and the pressure sensor is electrically connected to the microprocessor. The bonding plate can squeeze the flexible pad to bond with the roller surface, while providing flexible protection to avoid causing new damage. At the same time, the pressure sensor can monitor the bonding pressure in real time to avoid insufficient pressure leading to loose bonding, and also to avoid excessive pressure leading to deformation of the roller surface.

[0014] 3. Beneficial Effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) This scheme uses non-contact displacement sensors and laser measurement technology, which can monitor the radial displacement changes of the roller surface caused by wear in real time, and perform data processing and wear degree calculation through microprocessor. This not only improves the accuracy and reliability of measurement, but also avoids the errors caused by human factors in traditional monitoring methods.

[0017] (2) This solution is designed with a detachable monitoring half ring and an adaptive bonding component, which can be flexibly adjusted according to the different sizes and shapes of the roller. At the same time, the adaptive bonding component can also be adaptively adjusted according to the changes in the roller surface to ensure that a tight fit can be maintained at different wear stages. This not only improves the adaptability and flexibility of the device, but also reduces the difficulty and cost of installation and disassembly.

[0018] (3) Through the application of a microprocessor, this device can realize functions such as real-time data processing, wear degree calculation, and early warning signal output. Once the roller wear reaches the preset threshold, the device will automatically issue an early warning signal to remind the operator to take timely measures for maintenance and replacement. This intelligent monitoring method not only improves monitoring efficiency but also reduces the cost and risk of manual intervention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the driving component and the bonding component of this utility model;

[0021] Figure 3 This utility model Figure 2 Schematic diagram of the structure at point A;

[0022] Figure 4 This is a schematic diagram of the installation component of this utility model.

[0023] Explanation of the labels in the diagram:

[0024] 1. Monitoring semi-ring; 2. Mounting assembly; 201. Mounting block; 202. Screw; 203. Nut; 204. Guide rod; 205. Anti-fall block; 3. Power supply; 4. Microprocessor; 5. Monitoring hole; 6. Non-contact displacement sensor; 7. Audible and visual alarm light; 8. Drive assembly; 801. Electromagnet; 802. Moving column; 803. Magnetic slider; 804. Compression spring; 9. Adhesion assembly; 901. Adhesion plate; 902. Flexible pad; 903. Pressure sensor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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 do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment of the present invention provides a coal mining machine drum wear monitoring and early warning device, including a pair of monitoring half-rings 1, multiple non-contact displacement sensors 6, and a control module. Mounting components 2 are fixedly installed on both sides of the monitoring half-rings 1. The pair of monitoring half-rings 1 are assembled into a monitoring ring via the mounting components 2. Multiple evenly distributed monitoring holes 5 are opened at the inner end of the monitoring half-rings 1. The number of non-contact displacement sensors 6 is the same as the number of monitoring holes 5 and they are installed inside the monitoring holes 5. The control module includes a power supply 3 and a microprocessor 4. The power supply 3 is fixedly installed at the outer end of the monitoring half-rings 1, and both the power supply 3 and the non-contact displacement sensors 6 are electrically connected to the microprocessor 4. Multiple audible and visual alarm lights 7 corresponding to the non-contact displacement sensors 6 are also installed at the outer end of the monitoring half-rings 1, and the audible and visual alarm lights 7 are electrically connected to the microprocessor 4.

[0030] It is worth noting that the non-contact displacement sensor 6 is used to measure the radial displacement change of the roller surface caused by wear. Specifically, it includes a laser emitter and a photosensitive receiver. The laser emitter emits a laser beam to the roller surface, and the photosensitive receiver receives the reflected laser beam. The displacement is calculated by measuring the round-trip time or angular change of the laser beam. The microprocessor 4 is used to receive the displacement data and calculate the wear degree of the roller. It has a built-in algorithm that can automatically calibrate the initial value based on the displacement data, thereby calculating the roller wear value.

[0031] The mounting component 2 includes a mounting block 201, which has a pair of mounting holes. A screw 202 is installed in the mounting holes. Matching nuts 203 are threaded on both sides of the screw 202, and the nuts 203 abut against the side of the mounting block 201, so that a pair of monitoring half rings 1 can be aligned and installed into a monitoring ring that matches the coal mining machine drum and remains stable against its surface.

[0032] A guide hole is provided at the center of the mounting block 201, and a matching guide rod 204 is inserted into the guide hole. Anti-fall blocks 205 are fixedly connected to both ends of the guide rod 204, which makes it convenient for a pair of mounting blocks 201 to be aligned and installed. When disassembling, there is no need to completely separate them, and a pair of monitoring half rings 1 can be removed as a whole.

[0033] Multiple drive components 8 are also installed on the monitoring half-ring 1, which are staggered with the non-contact displacement sensor 6. Multiple hidden slots corresponding to the drive components 8 are opened at the inner end of the monitoring half-ring 1. Adhesion components 9 are slidably installed in the hidden slots. The drive components 8 can drive the adhesion components 9 to move to the inner side of the monitoring half-ring 1 to fit tightly against the roller, so as to ensure that a tight fit can be maintained at different wear stages.

[0034] The drive assembly 8 includes an electromagnet 801 fixedly installed at the outer end of the monitoring semi-ring 1, and the electromagnet 801 is electrically connected to the microprocessor 4. A movable groove is provided on the bottom wall of the hidden groove, and a matching movable column 802 is slidably installed in the movable groove. A pair of symmetrically distributed sliding grooves are provided on the side wall of the movable groove, and a matching magnetic slider 803 is slidably installed in the sliding groove. A compression spring 804 is fixedly connected between the magnetic slider 803 and the bottom wall of the sliding groove. The electromagnet 801 applies a repulsive magnetic field to the magnetic slider 803, which overcomes the elastic force of the compression spring 804 and drives the movable column 802 to move, thereby acting on the bonding assembly 9 so that it can be tightly attached to the roller surface.

[0035] The bonding assembly 9 includes a bonding plate 901 fixedly connected to the moving column 802. The outer end of the bonding plate 901 is covered with a flexible pad 902. A pressure sensor 903 is installed between the bonding plate 901 and the flexible pad 902, and the pressure sensor 903 is electrically connected to the microprocessor 4. The bonding plate 901 can squeeze the flexible pad 902 to bond with the roller surface, while providing flexible protection to avoid causing new damage. At the same time, the pressure sensor 903 can monitor the bonding pressure in real time to avoid insufficient pressure leading to loose bonding, and also to avoid excessive pressure leading to deformation of the roller surface.

[0036] In use, a pair of monitoring semi-rings 1 are installed on the surface of the drum, specifically on key areas. The wear of the drum is often not uniformly distributed, but concentrated in certain specific areas, such as the cutting part that is in direct contact with the coal seam or a high-stress area. Then, the radial displacement change of the drum surface caused by wear is measured by the non-contact displacement sensor 6, and the measurement data is sent to the microprocessor 4 to calculate the wear value. Once the threshold is reached, the corresponding audible and visual alarm light 7 will be controlled to issue a warning. If necessary, 701 can be activated to indirectly drive 702 to push the bonding component 9 outward, so that the flexible pad 902 on the bonding component 9 is tightly attached to the drum surface for monitoring and maintains a stable posture.

[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A coal mining machine drum wear monitoring and early warning device, characterized in that: include: A pair of monitoring half-rings (1), each half-ring (1) is fixedly installed with an installation component (2) on both sides. The pair of monitoring half-rings (1) are assembled into a monitoring ring by the installation component (2). The inner end of the monitoring half-ring (1) is provided with a plurality of evenly distributed monitoring holes (5). Multiple non-contact displacement sensors (6) are installed inside the monitoring hole (5), with the same number as the monitoring hole (5). The control module includes a power supply (3) and a microprocessor (4). The power supply (3) is fixedly installed at the outer end of the monitoring half-ring (1), and the power supply (3) and the non-contact displacement sensor (6) are electrically connected to the microprocessor (4). The outer end of the monitoring half-ring (1) is also equipped with multiple audible and visual alarm lights (7) corresponding to the non-contact displacement sensor (6), and the audible and visual alarm lights (7) are electrically connected to the microprocessor (4).

2. The coal mining machine drum wear monitoring and early warning device according to claim 1, characterized in that: The mounting component (2) includes a mounting block (201), on which a pair of mounting holes are provided. A screw (202) is installed in the mounting holes. Matching nuts (203) are threaded on both sides of the screw (202), and the nuts (203) abut against the side of the mounting block (201).

3. The coal mining machine drum wear monitoring and early warning device according to claim 2, characterized in that: The mounting block (201) has a guide hole at its center, and a matching guide rod (204) is inserted into the guide hole. Anti-fall blocks (205) are fixedly connected to both ends of the guide rod (204).

4. The coal mining machine drum wear monitoring and early warning device according to claim 3, characterized in that: The monitoring half-ring (1) is also equipped with multiple drive components (8) that are staggered with the non-contact displacement sensor (6). The inner end of the monitoring half-ring (1) is provided with multiple hidden slots corresponding to the drive components (8), and a fitting component (9) is slidably installed in the hidden slot.

5. The coal mining machine drum wear monitoring and early warning device according to claim 4, characterized in that: The drive assembly (8) includes an electromagnet (801) fixedly installed at the outer end of the monitoring half-ring (1), and the electromagnet (801) is electrically connected to the microprocessor (4). A movable groove is provided on the bottom wall of the hidden groove, and a matching movable column (802) is slidably installed in the movable groove. A pair of symmetrically distributed sliding grooves are provided on the side wall of the movable groove, and a matching magnetic slider (803) is slidably installed in the sliding groove. A compression spring (804) is fixedly connected between the magnetic slider (803) and the bottom wall of the sliding groove.

6. The coal mining machine drum wear monitoring and early warning device according to claim 5, characterized in that: The bonding assembly (9) includes a bonding plate (901) fixedly connected to a movable column (802), the outer end of the bonding plate (901) is covered with a flexible pad (902), a pressure sensor (903) is installed between the bonding plate (901) and the flexible pad (902), and the pressure sensor (903) is electrically connected to a microprocessor (4).

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