A coal mine underground car positioning device

Abstract

This application discloses a coal mine underground car positioning device, relating to the field of mine car positioning technology, which can improve the accuracy of identifying the position of coal mine underground cars to a certain extent. The coal mine underground car positioning device provided in this application includes: a support frame with rotating holes for connecting the mine car axles; a connecting frame with a connecting plate hinged to the support frame, wherein a first magnet is fixedly connected to one side of the connecting frame near the side wall of the support frame, and a second magnet repelling the first magnet is fixedly connected to the support frame; a cleaning strip hinged to the connecting frame, wherein the two hinge axes of the connecting frame are arranged parallel, and an RFID reader is fixedly connected to the side of the cleaning strip near the track.

Description

Technical Field

[0001] This application relates to the field of mine car positioning technology, and in particular to a mine car positioning device for underground coal mines. Background Technology

[0002] In the underground working environment of coal mines, the conditions are extremely complex, and the mine cars operating underground are crucial to the efficiency of coal resource transportation and the safety of workers. Therefore, accurately determining the location of the mine cars is essential for improving transportation efficiency and ensuring safe production.

[0003] Existing underground mine car positioning technologies have many shortcomings. For example, positioning systems based on technologies such as Bluetooth and WiFi are easily interfered with in the complex underground environment, resulting in low positioning accuracy and poor reliability. On the other hand, some traditional positioning methods, such as manual marking positioning, are inefficient and prone to errors.

[0004] Therefore, in order to overcome the shortcomings of poor positioning accuracy in the prior art for obtaining the position of mine cars underground, this application provides a positioning device for mine cars underground in coal mines. Utility Model Content

[0005] This application provides a coal mine underground car positioning device. A support frame is rotatably connected to the mine car axle. The repulsive force of a first and second magnet causes one end of a connecting frame with a cleaning strip to adhere to the side wall of the mine car track. The cleaning strip cleans slag from the track side wall, while an RFID reader on the cleaning strip reads RFID passive tags spaced at intervals on the track side wall. By obtaining the unique identification code stored within the RFID passive tags, the position of the mine car is located. This solves the problem of poor positioning accuracy in existing technologies for underground mine cars, and achieves the goal of improving the accuracy of identifying the position of underground coal mine cars.

[0006] This application provides a coal mine underground car positioning device, including:

[0007] The support frame is provided with rotating holes for connecting the axle of the mine car;

[0008] A connecting frame is provided with a connecting plate that is hinged to the support frame, and a first magnet is fixedly connected to one side of the connecting frame near the side wall of the support frame, and a second magnet that is magnetically repelled by the first magnet is fixedly connected to the support frame.

[0009] The cleaning strip is hinged to the connecting frame, the two hinge axes of the connecting frame are arranged in parallel, and an RFID reader is fixedly connected to the side of the cleaning strip near the track.

[0010] Optionally, one end of the cleaning strip is provided with an inclination angle at its front end along the direction of travel, and the cross-sectional area of ​​the top wall of the cleaning strip is greater than the cross-sectional area of ​​the bottom wall of the cleaning strip.

[0011] Optionally, a protective cover is also connected to the side of the cleaning strip closest to the tilt angle.

[0012] Optionally, the support frame has a first trapezoidal groove, the cross-sectional shape of the first trapezoidal groove is the same as that of the first magnet, and the first magnet is detachably connected to the support frame through the first trapezoidal groove.

[0013] Optionally, a first flexible strip is also fixedly connected to the inner wall of the first trapezoidal groove, and the side of the first flexible strip away from the first trapezoidal groove is in contact with the first magnet.

[0014] Optionally, the connecting frame has a second trapezoidal groove, the cross-sectional shape of which is the same as that of the second magnet, and the second magnet is detachably connected to the connecting frame through the second trapezoidal groove.

[0015] Optionally, a second flexible strip is also fixedly connected to the inner wall of the second trapezoidal groove, and the side of the second flexible strip away from the second trapezoidal groove is in contact with the second magnet.

[0016] Optionally, a rotating bearing may be detachably connected to the rotating hole.

[0017] Optionally, the support frame is detachably connected to an end cap near the rotating bearing, one end of which is fitted against the side wall of the inner ring of the rotating bearing.

[0018] Optionally, the support frame is also threadedly connected to an adjusting column.

[0019] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0020] The coal mine underground car positioning device provided in this application embodiment uses a support frame rotatably connected to the mine car axle. The repulsive force of a first magnet and a second magnet causes one end of a connecting frame with a cleaning strip to adhere to the side wall of the mine car track. The cleaning strip cleans the slag from the track side wall, while an RFID reader on the cleaning strip reads RFID passive tags spaced at intervals on the track side wall. By obtaining the unique identification code stored inside the RFID passive tag, the position of the mine car is located. This solves the problem of poor positioning accuracy in existing technologies for underground mine cars, and achieves the goal of improving the accuracy of identifying the position of underground coal mine cars. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This application provides a schematic diagram of the structure of a coal mine underground car positioning device according to an embodiment of the present application.

[0023] Figure 2 A schematic diagram of the structure of a coal mine underground car positioning device provided in this application, showing the first magnet and the second magnet;

[0024] Figure 3 This is a schematic diagram of the connection between a coal mine underground car positioning device and the car axle, provided in an embodiment of this application.

[0025] Figure 4 for Figure 3 Enlarged view of section A.

[0026] Reference numerals: 1. Support frame; 11. Rotating hole; 12. First magnet; 13. First trapezoidal groove; 2. Connecting frame; 21. Connecting plate; 22. Second magnet; 23. Second trapezoidal groove; 3. Cleaning strip; 31. RFID reader; 4. Adjusting column; 5. Rotating bearing; 6. End cap. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for 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. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" 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; 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 the embodiments of this application according to the specific circumstances.

[0029] This application provides a coal mine underground car positioning device, including:

[0030] The support frame 1 is provided with a rotating hole 11 for connecting the axle of the mine car;

[0031] The connecting frame 2 is provided with a connecting plate 21 that is hinged to the support frame 1, and a first magnet 12 is fixedly connected to one side of the connecting frame 2 near the side wall of the support frame 1, and a second magnet 22 that is magnetically repelled by the first magnet 12 is fixedly connected to the support frame 1.

[0032] The cleaning strip 3 is hinged to the connecting frame 2. The two hinge axes of the connecting frame 2 are arranged in parallel, and an RFID reader 31 is fixedly connected to the side of the cleaning strip 3 near the track.

[0033] For example, the RFID reader 31 can be implemented with a high-sensitivity radio frequency signal receiving module and signal processing circuit, and is electrically connected to the power supply of the mine car. It can accurately read the signals of RFID passive tags fixed on the side wall of the track during the movement of the mine car and perform preliminary processing, which facilitates the storage of mine car location data and its uploading to the ground monitoring center.

[0034] In the coal mine underground car positioning device provided in this application embodiment, a support frame 1 is rotatably connected to the mine car axle. The repulsive force of the first magnet 12 and the second magnet 22 is used to make one end of the connecting frame 2 with the cleaning strip 3 fit against the side wall of the mine car track. The cleaning strip 3 is used to clean the slag on the side wall of the track. At the same time, the RFID reader 31 on the cleaning strip 3 reads the RFID passive tags that are spaced apart on the side wall of the track. By obtaining the unique identification code stored inside the RFID passive tag, the position of the mine car is located. This solves the defect of poor positioning accuracy of the mine car in the prior art and achieves the purpose of improving the accuracy of identifying the position of the mine car in the coal mine.

[0035] In some embodiments, in order to reduce frictional loss at the connection between the support frame 1 and the mine car axle, a rotating bearing 5 is detachably connected to the rotating hole 11. The rotating bearing 5 can be implemented as a thrust ball bearing. The inner ring of the rotating bearing 5 is interference-fitted with the mine car axle, and the outer ring of the rotating bearing 5 is interference-fitted with the inner wall of the rotating hole 11.

[0036] Optionally, in order to facilitate reliable lubrication of the rotating bearing 5, an end cover 6 is detachably connected to the support frame 1 near the rotating bearing 5, and one end of the end cover 6 is in contact with the side wall of the inner ring of the rotating bearing 5.

[0037] For example, the end cap 6 can be fixedly connected to the support frame 1 by bolts. One end of the end cap 6 is in contact with the side wall of the inner ring of the rotating bearing 5, thereby preventing the rotating bearing 5 from sliding along the length of the mine car axle and improving the convenience of connecting the rotating bearing 5 to the support frame 1 and the mine car axle.

[0038] Optionally, in order to facilitate the cleaning of slag adhering to the side wall of the mine car track, one end of the cleaning strip 3 is provided with an inclined angle along the front end of the traveling direction, and the cross-sectional area of ​​the top wall of the cleaning strip 3 is larger than the cross-sectional area of ​​the bottom wall of the cleaning strip 3.

[0039] By using the tilt angle of the cleaning strip 3 to clean the slag attached to the side wall of the track and remove it from the track, the probability of the slag obstructing the RFID reader 31 from recognizing the RFID passive tag fixed on the track is reduced. This can not only improve the accuracy of the RFID reader 31 in recognizing the position of the mine car, but also reduce the probability of the RFID reader 31 being damaged due to contact with the slag.

[0040] Optionally, in order to reduce the probability of wear and tear on the cleaning strip 3, a protective cover is also connected to the side of the cleaning strip 3 near the tilt angle.

[0041] By fixing a protective cover to the outside of the cleaning strip 3, the protective cover can be implemented as a triangle. The protective cover and the cleaning strip 3 are fixedly connected by bolts, thereby protecting the tilt angle of the cleaning strip 3 and reducing the probability of wear on the cleaning strip 3.

[0042] Optionally, the support frame 1 is also threadedly connected to an adjusting column 4.

[0043] Operators can adjust the horizontal direction of the support frame 1 by adding or removing fixing bolts on the adjusting column 4, so as to ensure that the cleaning strip 3 fits tightly with the side wall of the track and facilitate the cleaning of slag from the side wall of the track.

[0044] Optionally, the support frame 1 has a first trapezoidal groove 13, the cross-sectional shape of the first trapezoidal groove 13 is the same as that of the first magnet 12, and the first magnet 12 is detachably connected to the support frame 1 through the first trapezoidal groove 13.

[0045] For example, the inner wall of the first trapezoidal groove 13 is also fixedly connected to a first flexible strip, and the side of the first flexible strip away from the first trapezoidal groove 13 is in contact with the first magnet 12.

[0046] By opening a first trapezoidal groove 13 on the support frame 1, the gap of the first trapezoidal groove 13 near the connecting frame 2 is smaller than the gap of the first trapezoidal groove 13 away from the connecting frame 2, and the first magnet 12 protrudes from the first trapezoidal groove 13, thereby achieving magnetic repulsion between the first magnet 13 and the second magnet 22 to press the cleaning strip 3 against the track side wall.

[0047] Optionally, the connecting frame 2 has a second trapezoidal groove 23, the cross-sectional shape of the second trapezoidal groove 23 is the same as that of the second magnet 22, and the second magnet 22 is detachably connected to the connecting frame 2 through the second trapezoidal groove 23.

[0048] Optionally, a second flexible strip is also fixedly connected to the inner wall of the second trapezoidal groove 23, and the side of the second flexible strip away from the second trapezoidal groove 23 is in contact with the second magnet 22.

[0049] By opening a second trapezoidal groove 23 on the connecting frame 2, the gap of the second trapezoidal groove 23 near the support frame 1 is smaller than the gap of the first trapezoidal groove 13 away from the support frame 1. The second magnet 22 protrudes from the second trapezoidal groove 23, thereby pressing the cleaning strip 3 against the track side wall by magnetic repulsion with the first magnet 12.

[0050] In the coal mine underground car positioning device provided in this application embodiment, a support frame 1 is rotatably connected to the mine car axle. The repulsive force of the first magnet 12 and the second magnet 22 is used to make one end of the connecting frame 2 with the cleaning strip 3 fit against the side wall of the mine car track. The cleaning strip 3 is used to clean the slag on the side wall of the track. At the same time, the RFID reader 31 on the cleaning strip 3 reads the RFID passive tags that are spaced apart on the side wall of the track. By obtaining the unique identification code stored inside the RFID passive tag, the position of the mine car is located. This solves the defect of poor positioning accuracy of the mine car in the prior art and achieves the purpose of improving the accuracy of identifying the position of the mine car in the coal mine.

[0051] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0052] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A coal mine underground mine car positioning device, characterized in that, include: The support frame (1) is provided with a rotating hole (11) for connecting the axle of the mine car; The connecting frame (2) is provided with a connecting plate (21) hinged to the support frame (1), and a first magnet (12) is fixedly connected to one side of the connecting frame (2) near the side wall of the support frame (1), and a second magnet (22) that is magnetically repulsive to the first magnet (12) is fixedly connected to the support frame (1). The cleaning strip (3) is hinged to the connecting frame (2), the two hinge axes of the connecting frame (2) are arranged in parallel, and the cleaning strip (3) is also fixedly connected to an RFID reader (31) on the side near the track.

2. A coal mine underground mine car positioning device according to claim 1, characterized in that, One end of the cleaning strip (3) is provided with an inclined angle at the front end along the direction of travel, and the cross-sectional area of ​​the top wall of the cleaning strip (3) is greater than the cross-sectional area of ​​the bottom wall of the cleaning strip (3).

3. A coal mine underground mine car positioning device according to claim 2, characterised in that, The cleaning strip (3) is also connected to a protective cover on the side near the tilt angle.

4. The underground coal mine car positioning device of claim 1, wherein, The support frame (1) has a first trapezoidal groove (13), the cross-sectional shape of the first trapezoidal groove (13) is the same as that of the first magnet (12), and the first magnet (12) is detachably connected to the support frame (1) through the first trapezoidal groove (13).

5. A coal mine underground vehicle positioning device according to claim 4, characterised in that, The inner wall of the first trapezoidal groove (13) is also fixedly connected with a first flexible strip, and the side of the first flexible strip away from the first trapezoidal groove (13) is in contact with the first magnet (12).

6. A coal mine underground vehicle positioning device according to claim 1, characterised in that, The connecting frame (2) has a second trapezoidal groove (23), the cross-sectional shape of which is the same as that of the second magnet (22), and the second magnet (22) is detachably connected to the connecting frame (2) through the second trapezoidal groove (23).

7. A coal mine underground vehicle positioning device according to claim 6, characterised in that, The inner wall of the second trapezoidal groove (23) is also fixedly connected with a second flexible strip, and the side of the second flexible strip away from the second trapezoidal groove (23) is in contact with the second magnet (22).

8. A coal mine underground vehicle positioning device according to claim 1, characterized in that, A rotating bearing (5) is detachably connected to the rotating hole (11).

9. A coal mine underground vehicle positioning device according to claim 8, characterised in that, The support frame (1) is detachably connected to an end cap (6) near the rotating bearing (5), and one end of the end cap (6) is in contact with the side wall of the inner ring of the rotating bearing (5).

10. A coal mine underground vehicle positioning device according to claim 1, characterised in that, An adjusting column (4) is also threadedly connected to the support frame (1).

Images