Vehicle-mounted coal quality detection device

Abstract

The utility model relates to a vehicle-mounted coal quality detection device. The vehicle-mounted coal quality detection device comprises a base, a multidirectional movement assembly and a detection assembly, the multidirectional movement assembly is rotationally connected with the base, and the detection assembly is connected with the multidirectional movement assembly; the detection assembly comprises a mounting platform, at least two groups of testing mechanisms, a moisture sensor and at least one group of pressure sensing mechanism, and the bottom surface of the mounting platform is a mounting surface; one group of testing mechanism comprises two testing electrodes, and the two testing electrodes are oppositely arranged and are perpendicular to the mounting platform; one end of the moisture sensor is connected with the mounting surface; one group of pressure sensing mechanism comprises two first pressure sensors, and the two pressure sensors are symmetrically arranged on the mounting surface and are connected with the mounting surface; through the arrangement of the multi-directional movement assembly, the detection assembly can adapt to various stacking conditions of a vehicle-mounted coal mine, and the pressure sensing mechanism monitors the pressure conditions of all positions of the mounting surface, so that the test environment of the test mechanism is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of coal quality detection, and in particular to a vehicle-mounted coal quality detection device. Background Art

[0002] Gangue, as a waste in the coal mining process, has a huge stock in my country. Gangue power generation technology is one of the main ways of its comprehensive utilization. By mixing coal and gangue and crushing them for combustion and power generation, the change of coal doping rate in this process will affect the efficiency of combustion and power generation. In addition, some lawless elements mix gangue in coal operations to pass off inferior products as good ones. Therefore, it is of great practical significance to achieve low-cost and efficient coal doping rate detection. Coal quality detection usually refers to gangue content detection and doping rate detection.

[0003] In the prior art, Chinese patent CN117092034A disclosed a coal quality detection device on November 21, 2023, including a sampling system for taking coal samples from a coal powder conveyor belt, and a detection and analysis system for detecting and analyzing the coal samples collected by the sampling system. The sampling system includes a sampling tube with a closed upper end, and the lower end of the sampling tube slides through the coal powder conveyor belt protective cover. A sampling motor is provided at the closed end of the sampling tube, and the output end of the sampling motor is coaxially connected to a spiral shaft, and the spiral shaft is coaxially connected to the inner cavity of the sampling tube; a sample discharge tube is provided on one side of the top of the sampling tube.

[0004] It is not difficult to find out from the content of the patent that its detection of coal quality requires the sample to be transported to the detection and analysis system for detection, which is relatively cumbersome for vehicle-mounted coal detection, that is, the vehicle-mounted coal mine coal quality detection device in the existing technology is not mature. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the present disclosure aims to provide a vehicle-mounted coal quality detection device to solve the technical problem that the vehicle-mounted coal mine coal quality detection device in the prior art is not mature.

[0006] The vehicle-mounted coal quality detection device disclosed in the present invention comprises: a base, a multi-directional motion component and a detection component;

[0007] The multi-directional motion component is rotatably connected to the base, and the detection component is connected to the multi-directional motion component;

[0008] The detection assembly includes a mounting platform, at least two groups of test mechanisms, a moisture sensor and at least one group of pressure sensor mechanisms, wherein the side of the mounting platform close to the coal is the mounting surface; one group of the test mechanisms includes two test electrodes, the two test electrodes are arranged opposite to each other, one end of the test electrode facing the coal is the test end, which is used to measure the AC impedance value of the coal between the two electrodes, and the other end is connected to the mounting surface, and the two test electrodes are arranged perpendicular to the mounting platform;

[0009] The moisture sensor and the testing mechanism are arranged in the same direction and one end of the moisture sensor is connected to the mounting surface;

[0010] A group of the pressure sensing mechanisms includes two first pressure sensors, and the two pressure sensors are symmetrically arranged on the mounting surface and connected to the mounting surface.

[0011] Preferably, the test electrode comprises a hollow metal tube, an insulating sleeve, a soft sleeve, a second pressure sensor, a conical head and a metal conductor;

[0012] The metal conductor is arranged in the hollow metal tube, and the hollow metal tube has a window at a position corresponding to the metal conductor. The second pressure sensor is arranged at a position on the outer periphery of the hollow metal tube away from the window and is connected to the hollow metal tube. The soft sleeve is sleeved on the outside of the second pressure sensor, the conical head is connected to an end of the hollow metal tube away from the mounting surface, and the insulating sleeve is sleeved on an end of the hollow metal tube close to the mounting surface and is connected to the mounting surface.

[0013] Preferably, the multi-directional motion component includes a mechanical arm and an xz two-directional walking platform, one end of the mechanical arm is connected to the detection component, and the other end is connected to the xz two-directional walking platform, and the xz two-directional walking platform is rotatably connected to the base.

[0014] Preferably, one end of the mounting platform is connected to the robotic arm ball.

[0015] Preferably, a protective structure is formed on the outer periphery of the mounting surface extending in the direction of the test electrode, and the cross section of the protective structure is in a circular ring shape.

[0016] Preferably, a wiring hole is formed at the connection between the base and the xz two-way walking platform.

[0017] Preferably, the vehicle-mounted coal quality detection device further comprises a hollow shaft driving component, and the base and the xz two-way walking platform are rotationally connected via the hollow shaft driving component.

[0018] Preferably, the hollow shaft driving member comprises a hollow shaft and a servo motor, and one end of the hollow shaft is connected to an output end of the servo motor.

[0019] The advantages of the vehicle-mounted coal quality detection device disclosed in the present invention are:

[0020] Through the setting of multi-directional motion components, the detection components can adapt to various stacking conditions of vehicle-mounted coal mines, and the coal quality can be detected through the testing mechanism. At the same time, the pressure conditions at various locations on the installation surface are monitored through the pressure sensing mechanism to ensure the testing environment of the testing mechanism, thereby improving the accuracy of the detection and making the vehicle-mounted coal mine coal quality detection device more mature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a vehicle-mounted coal quality detection device disclosed in the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the detection component;

[0023] Figure 3 is the structural intention of the test electrode.

[0024] Explanation of the reference numerals: 1-base, 2-multi-directional motion component, 21-mechanical arm, 22-xz two-directional walking platform, 3-detection component, 31-installation platform, 32-test electrode, 321-hollow metal tube, 322-insulating sleeve, 323-soft sleeve, 324-second pressure sensor, 325-conical head, 326-metal conductor, 33-moisture sensor, 34-first pressure sensor. DETAILED DESCRIPTION

[0025] like Figure 1 and Figure 2 As shown, a vehicle-mounted coal quality detection device disclosed in the present invention comprises: a base 1, a multi-directional motion component 2 and a detection component 3;

[0026] The multi-directional motion component 2 is rotatably connected to the base 1, and the detection component 3 is connected to the multi-directional motion component 2;

[0027] The detection assembly 3 includes a mounting platform 31, at least two groups of test mechanisms, a moisture sensor 33 and at least one group of pressure sensor mechanisms. The side of the mounting platform 31 close to the coal is the mounting surface; one group of test mechanisms includes two test electrodes 32, which are arranged opposite to each other and are used to measure the AC impedance value of the coal between the two test electrodes 32. One end of the test electrode 32 facing the coal is the test end, and the other end is connected to the mounting surface. The two test electrodes 32 are arranged perpendicular to the mounting platform 31.

[0028] The moisture sensor 33 is arranged in the same direction as the testing mechanism and one end of the moisture sensor 33 is connected to the mounting surface. Preferably, the moisture sensor 33 is detachably connected to the mounting surface.

[0029] A set of pressure sensing mechanisms includes two first pressure sensors 34, which are symmetrically arranged on the mounting surface and connected to the mounting surface. The pressure sensing mechanism is used to monitor the pressure conditions at various locations on the mounting surface.

[0030] Specifically, the detection component 3 can be externally connected to an impedance converter and a network analyzer, and perform data processing and control the signal strength of the test electrode 32 through the MCU. Preferably, the impedance converter and the network analyzer are AD5933 produced by Analog Devices, and the MCU processor can be STM32. At the same time, the moisture sensor 33 can use the moisture sensor model JXBS-3001-TR of Jingxun Changtong, and the first pressure sensor 34 can use the pressure sensor model 26PCCFA6G of Honeywell as the first pressure sensor 34. In order to ensure that the pressure sensing mechanism can obtain the pressure data of various parts of the installation surface as accurately as possible, a group of pressure sensing mechanisms includes two first pressure sensors 34, and the two pressure sensors are symmetrically arranged on the installation surface and connected to the installation surface. During the detection process, when the detection component 3 is inserted into the coal to be detected, the coal contacts the installation surface of the detection component 3, and the pressure on the surface of the installation surface is measured by the pressure sensing mechanism on the installation surface. When the signals output by the two first pressure sensors 34 in the pressure sensing mechanism are consistent, it is considered that the installation surface is in smooth contact with the coal, thereby ensuring the validity and authenticity of the detection results during the detection process, and avoiding errors in the detection results.

[0031] More specifically, the test mechanisms may be two groups, or three groups or more; illustratively, taking two groups of test mechanisms as an example, one group of test mechanisms includes two test electrodes 32, and the two test electrodes 32 are arranged opposite to each other, one of the test electrodes 32 is electrically connected to the power supply or the power generation end, and the other test electrode 32 is connected to the impedance converter and the network analyzer. When the two groups of test mechanisms are set up, it is preferably set up in the following manner: the spacing between the two test electrodes 32 in one group of test mechanisms is the same as the spacing between the two test electrodes 32 in the other group of test mechanisms.

[0032] The pressure sensing mechanism is preferably two groups, and the role of the pressure sensing mechanism is to ensure that the depth of insertion of the detection component into the coal to be tested is consistent. More specifically, one group of pressure sensing mechanisms preferably corresponds to one group of test mechanisms, that is, the setting position of the pressure sensing mechanism corresponds to the setting position of the test mechanism, that is, the setting position of each first pressure sensor 34 corresponds to a test electrode 32; this setting can ensure that the pressure condition near the test electrode 32 is accurately obtained, which is more conducive to adjusting the insertion depth of the detection component 3.

[0033] The moisture sensor 33 is used to detect the moisture content of the coal to be tested, and the testing mechanism is used to detect the AC impedance value of the coal to be tested. By detecting the moisture content and the AC impedance value of the coal, the coal quality of the vehicle-borne coal can be detected. Specifically, different coal qualities, such as good quality coal and gangue, coal slag and high moisture content coal, have different corresponding AC impedance values, and the water content, compactness, and gangue content of the coal will affect the dielectric properties of the coal. Therefore, the impedance measurement value carries rich structural and composition information of the sample. The moisture content and the AC impedance value of the coal are obtained by detection, and then the coal quality is detected.

[0034] Since the particle size of coal will affect the model selection of the moisture sensor 33, the connection method of the moisture sensor 33 to the mounting surface is preferably a detachable connection to the mounting surface. In the actual detection process, an appropriate moisture sensor 33 can be selected according to the different particle sizes of the coal, and the measurement of the moisture content in the coal can refer to the national standard GB / T 211-2017 Method for determining the total moisture in coal and GB / T 23561.6-2009 Method for determining the physical and mechanical properties of coal and rock. Since the calculation method of the total moisture of coal is consistent with that of soil, the air drying method is to blow air and dry at 105-110°C. And the soil moisture content is between 3%-45%, which is similar to the range of coal moisture content. Therefore, in some cases, such as when the coal particle size is fine, a mature soil moisture measuring instrument can be selected, such as the moisture sensor model JXBS-3001-TR of Jingxun Changtong mentioned above, to measure the moisture content of the coal; and in the case of coarse coal particle size, the Tuoke MS350 coal block moisture detector can be selected as the moisture sensor 33.

[0035] Through the setting of the multi-directional motion component 2, the detection component 3 can adapt to various stacking conditions of the vehicle-mounted coal mine, and the coal quality is detected by the testing mechanism. At the same time, the pressure conditions at various locations on the installation surface are monitored by the pressure sensing mechanism to ensure the testing environment of the testing mechanism, thereby improving the accuracy of the detection and making the vehicle-mounted coal mine coal quality detection device more mature.

[0036] Further, such as Figure 3As shown, the test electrode includes a hollow metal tube 321, an insulating sleeve 322, a soft sleeve 323, a second pressure sensor 324, a conical head 325 and a metal conductor 326;

[0037] The metal conductor 326 is arranged in the hollow metal tube 321. The hollow metal tube 321 has a window at a position corresponding to the metal conductor 326. The second pressure sensor 324 is arranged at a position on the outer periphery of the hollow metal tube 321 away from the window and is connected to the hollow metal tube 321. The soft sleeve 323 is sleeved on the outside of the hollow metal tube 321 corresponding to the position where the second pressure sensor 324 is arranged. The conical head 325 is connected to one end of the hollow metal tube 321 away from the installation surface. The insulating sleeve 322 is sleeved on one end of the hollow metal tube 321 close to the installation surface and is connected to the installation surface.

[0038] Specifically, the metal conductor 326 is disposed in the hollow metal tube 321. To prevent the signal transmitted by the metal conductor 326 from being interfered by the hollow metal tube 321, a window is provided in the hollow metal tube 321 at a position corresponding to the metal conductor 326. The second pressure sensor 324 can be an Interlink Electron. The ics model is FSR402 piezoresistive film pressure sensor. In order to ensure that the second pressure sensor 324 can sense the pressure exerted on it by the coal, the second pressure sensor 324 is arranged on the periphery of the hollow metal tube 321. In order to avoid mutual influence with the metal conductor 326, the second pressure sensor 324 is arranged on the periphery of the hollow metal tube 321 away from the window. The second pressure sensor 324 can be connected to the hollow metal tube 321 by bonding with an adhesive, or by using some fixings to connect the second pressure sensor 324 and the hollow metal tube 321. For example, conventional bolts and nuts are used to fix the second pressure sensor 324 to the periphery of the hollow metal tube 321. In order to avoid the second pressure sensor 324 from falling off due to continuous friction with the coal to be tested during long-term detection, a soft sleeve 323 is provided on the outer sleeve of the second pressure sensor 324. After the soft sleeve 323 is installed, the second pressure sensor 324 is covered to protect the second pressure sensor 324. The soft sleeve 323 may be a silicone sleeve. The silicone sleeve itself is relatively soft and does not affect the sensing of the second pressure sensor 324 .

[0039] The conical head 325 is connected to one end of the hollow metal tube 321 away from the mounting surface, and the tip of the conical head 325 is away from the mounting surface. Since the tip of the conical head 325 is away from the mounting surface, the conical head faces the coal, that is, during detection, the conical head 325 can separate larger pieces of coal.

[0040] When installing the test mechanism, within a group of test mechanisms, it is necessary to ensure that the metal conductors 326 on the two test electrodes 32 within the test mechanism are arranged relative to each other, so that the test electrode 32 connected to the impedance converter and the network analyzer signal can receive the signal emitted by the test electrode 32 connected to the excitation source signal, thereby ensuring the accuracy of signal processing.

[0041] Furthermore, the multi-directional motion component 2 includes a mechanical arm 21 and an xz two-way walking platform 22, one end of the mechanical arm 21 is connected to the detection component 3, and the other end is connected to the xz two-way walking platform 22, and the xz two-way walking platform 22 is rotatably connected to the base 1.

[0042] Since the vehicle carrying coal is generally a coal transport truck, which is relatively large in size, that is, the coal transport truck is taller and wider, when inspecting the coal loaded thereon, it is usually necessary to move the inspection device around the coal transport truck, and the inspection process is relatively cumbersome. Therefore, the robot arm 21 includes two groups of parallel mechanisms, each group of parallel mechanisms is composed of a plurality of parallel connected rods, and the two groups of parallel mechanisms are rotatably connected through a rotating shaft, one group of parallel mechanisms is connected to the inspection component 3, and the other group of parallel mechanisms is connected to the xz two-way walking platform 22.

[0043] The parallel mechanism can provide high stability and precise motion control, and at the same time, provide a longer stroke for the vehicle-mounted coal quality detection device in the x-axis direction. In addition, when performing coal quality detection on a vehicle-mounted coal mine, it is necessary to ensure the stability of the detection component 3. Therefore, the mechanical arm 21 composed of two sets of parallel mechanisms can effectively ensure the stability during detection, thereby ensuring the validity and authenticity of the detection results and avoiding errors in the detection results.

[0044] Meanwhile, in one embodiment of the present disclosure, the xz two-axis walking platform 22 may adopt an XZ two-axis combined translation platform model PT-XZ5010 produced by Beijing Paidiwei Instrument Co., Ltd.

[0045] The xz two-way walking platform 22 and the mechanical arm 21 are combined to form a multi-directional motion component 2. Through the cooperation of the xz two-way walking platform 22 and the mechanical arm 21, the vehicle-mounted coal quality detection device disclosed in the present invention can adapt to vehicles of different heights and different widths, and has a wider range of applications.

[0046] Furthermore, before the detection, since the coal transport vehicle is generally in a hilly shape after being loaded with coal, it is usually necessary to flatten the coal loaded in the coal transport vehicle, and then control the multi-directional motion component 2 to drive the detection component 3 to reach the top of the designated position, which can be any position of the coal carrying area of ​​the coal transport vehicle, and then continue to control the multi-directional motion component 2 to drive the detection component 3 to insert the coal until the pressures sensed by the first pressure sensors 34 in each group of pressure sensing mechanisms are consistent, that is, the coal quality detection of the coal on the vehicle can be started;

[0047] During the detection process, it is necessary to maintain the stability of the detection component 3. Therefore, the detection component 3 and the robot arm 21 are preferably connected by a ball connection. Since the robot arm 21 adopts a parallel mechanism, the parallel mechanism can provide high stability and precise motion control. At the same time, in the x-axis direction, it provides a longer stroke for the vehicle-mounted coal quality detection device. One end of the mounting platform 31 is ball-connected to the robot arm 21, so that the rotation of the detection component 3 is more flexible, and the pressure at the contact point of the first pressure sensor 34 measured by the pressure sensing mechanism can be used to adjust the direction of the detection component 3, so that the pressures measured at the contact points of each first pressure sensor 34 are consistent, thereby ensuring that the insertion depth of the detection component 3 is consistent, thereby ensuring the accuracy of the detection.

[0048] Furthermore, during the detection process, the detection component 3 will inevitably collide with the coal. Since the test electrode 32, the moisture sensor 33, and the first pressure sensor 34 are connected to the installation surface, in order to prevent the test electrode 32, the moisture sensor 33, and the first pressure sensor 34 from becoming loose due to collision with the coal, the outer periphery of the installation surface extends along the direction of the test electrode 32 to form a protective structure, and the cross-section of the protective structure is a circular ring.

[0049] By setting up the protection structure, the test electrode 32, the moisture sensor 33 and the first pressure sensor 34 are protected. At the same time, since the protection structure is extended along the direction of the test electrode 32 on the periphery of the installation surface, the protection structure and the test electrode 32, the moisture sensor 33 and the first pressure sensor 34 form a sampling-like structure. That is, when the detection component 3 is placed in the coal on the vehicle, the protection structure separates the part of the coal to be detected from the other coal carried by the coal transport vehicle, thereby reducing the interference and influence of other coal on the part to be detected.

[0050] Furthermore, generally speaking, the multi-directional motion component 2 needs to be driven by a driving member, and inevitably needs to be electrically connected or signal connected to the driving member through wires. Specifically, the robot arm 21 needs to drive the extension of each group of parallel mechanisms through the driving member, and the detection component 3 also needs to be signal connected with AD5933, STM32, etc.; at the same time, since the xz two-way walking platform 22 is rotatably connected to the base 1, the xz two-way walking platform 22 also needs to be controlled by the driving member. At the same time, since the xz two-way walking platform 22 is rotatably connected to the base 1, various wires are inevitably easily entangled during rotation. Therefore, a wiring hole is formed at the connection between the base 1 and the xz two-way walking platform 22.

[0051] The arrangement of the wiring holes can prevent the detection component 3 and the multi-directional motion component 2 from being entangled in the wiring and causing a short circuit during the rotation process.

[0052] Furthermore, the vehicle-mounted coal quality detection device disclosed in the present invention also includes a hollow shaft driving component, and the base 1 and the xz two-way walking platform 22 are rotationally connected through the hollow shaft driving component.

[0053] Furthermore, the hollow shaft driving component includes a hollow shaft and a servo motor, and one end of the hollow shaft is connected to the output end of the servo motor.

[0054] The detection process of the vehicle-mounted coal quality detection device disclosed in the present invention is as follows:

[0055] Before detection, the coal loaded in the coal transport vehicle is spread out, and then the multi-directional motion component 2 is controlled to drive the detection component 3 to the top of the specified position, and then the multi-directional motion component 2 is continued to be controlled to drive the detection component 3 to insert the coal until the pressure sensed by each first pressure sensor 34 in each group of pressure sensing mechanisms is consistent, and the coal quality detection of the vehicle-mounted coal can be started. During the detection, the moisture sensor 33, the second pressure sensor 324, and the testing organization transmit the received data to the impedance converter and the network analyzer for data processing. After the data processing, the coal quality of the coal in the detection area can be obtained.

[0056] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words 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 cannot be understood as limiting the scope of protection of the present disclosure.

[0057] For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all of these changes and deformations should fall within the protection scope of the claims of the present disclosure.

Claims

1. A vehicle-mounted coal quality detection device, characterized in that: include: A base (1), a multi-directional motion component (2) and a detection component (3); The multi-directional motion component (2) is rotatably connected to the base (1), and the detection component (3) is connected to the multi-directional motion component (2); The detection assembly (3) comprises a mounting platform (31), at least two groups of testing mechanisms, a moisture sensor (33) and at least one group of pressure sensing mechanisms, wherein a side of the mounting platform (31) close to the coal is a mounting surface; one group of the testing mechanisms comprises two testing electrodes (32), the two testing electrodes (32) are arranged opposite to each other and are used to measure the AC impedance value of the coal between the two testing electrodes (32), one end of the testing electrode (32) facing the coal is a testing end, and the other end is connected to the mounting surface, and the two testing electrodes (32) are arranged perpendicular to the mounting platform (31); The moisture sensor (33) and the testing mechanism are arranged in the same direction and one end of the moisture sensor (33) is connected to the mounting surface; A group of the pressure sensing mechanisms comprises two first pressure sensors (34), the two pressure sensors are symmetrically arranged on the mounting surface and connected to the mounting surface, and the pressure sensing mechanism is used to monitor the pressure conditions at various locations on the mounting surface.

2. The vehicle-mounted coal quality detection device according to claim 1 is characterized in that: The test electrode (32) comprises a hollow metal tube (321), an insulating sleeve (322), a soft sleeve (323), a second pressure sensor (324), a conical head (325) and a metal conductor (326); The metal conductor (326) is arranged in the hollow metal tube (321); a window is provided in the hollow metal tube (321) at a position corresponding to the metal conductor (326); the second pressure sensor (324) is arranged at a position on the outer periphery of the hollow metal tube (321) away from the window and connected to the hollow metal tube (321); the soft sleeve (323) is sleeved on the outside of the hollow metal tube (321) corresponding to the position where the second pressure sensor (324) is arranged; the conical head (325) is connected to an end of the hollow metal tube (321) away from the mounting surface; and the insulating sleeve (322) is sleeved on an end of the hollow metal tube (321) close to the mounting surface and connected to the mounting surface.

3. The vehicle-mounted coal quality detection device according to claim 1 is characterized in that: The multi-directional motion component (2) comprises a mechanical arm (21) and an xz two-directional walking platform (22); one end of the mechanical arm (21) is connected to the detection component (3), and the other end is connected to the xz two-directional walking platform (22); and the xz two-directional walking platform (22) is rotatably connected to the base (1).

4. The vehicle-mounted coal quality detection device according to claim 3 is characterized in that: One end of the mounting platform (31) is ball-connected to the mechanical arm (21).

5. The vehicle-mounted coal quality detection device according to claim 1 is characterized in that: The outer periphery of the mounting surface extends in the direction of the test electrode (32) to form a protective structure, and the cross section of the protective structure is in a circular ring shape.

6. The vehicle-mounted coal quality detection device according to claim 3 is characterized in that: The base (1) is formed with a wiring hole at the connection position with the xz two-way walking platform (22).

7. The vehicle-mounted coal quality detection device according to claim 3 is characterized in that: It also comprises a hollow shaft driving component, and the base (1) and the xz two-way walking platform (22) are rotationally connected via the hollow shaft driving component.

8. The vehicle-mounted coal quality detection device according to claim 7 is characterized in that: The hollow shaft driving component comprises a hollow shaft and a servo motor, and one end of the hollow shaft is connected to the output end of the servo motor.

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