Fire coal density measuring vehicle

Abstract

The invention provides a fire coal density measuring vehicle, and relates to the technical field of density measurement, the fire coal density measuring vehicle comprises a main frame, action wheels are arranged below the main frame, the main frame is internally provided with a feed hopper, a pressurization assembly, a measuring assembly and a discharge belt from top to bottom in sequence, the front and rear sides of the discharge belt are provided with striker plates, and the outer wall of the main frame is fixedly connected with a display screen. The side wall of the main frame is fixedly connected with a hydraulic oil tank, a liquid outlet of the hydraulic oil tank is connected with an oil conveying pipe, and the other end of the oil conveying pipe is communicated with the pressurizing assembly. Automatic density detection of fire coal is completed through the coal-fired vehicle, manual detection of the density of the fire coal is replaced, the detection efficiency of the density of the fire coal is improved, only manual addition and recovery of the fire coal are needed in the detection process, a large amount of manpower and material resources are saved, and the detection efficiency is improved by flattening the fire coal in the measuring box. And the accuracy of a fire coal density detection result is improved.

Description

Technical Field

[0001] The invention relates to the technical field of density measurement, and in particular to a coal density measuring vehicle. Background Art

[0002] The density of coal can reflect the quality of coal to a certain extent. For large coal-using units such as thermal power plants and heating enterprises, mastering the real-time density of fuel coal is helpful to control the amount of coal and detect the coal quality to achieve the best economic benefits. The coal stack inventory technology at home and abroad is developing rapidly. Some domestic enterprises use laser coal counting instruments to count coal stacks. However, in order to calculate the amount of stored coal, the first thing is to know the density of coal.

[0003] The existing measurement of coal density mainly adopts the method of manual detection of coal density, which consumes a lot of manpower and material resources and has low measurement accuracy. Summary of the invention

[0004] The present invention provides a coal density measuring vehicle, which is used to solve the defects of the prior art that a manual method of detecting coal density consumes a lot of manpower and material resources and has low measurement accuracy.

[0005] On the one hand, the present invention provides a coal density measuring vehicle, including a main frame, wherein moving wheels are arranged under the main frame, a feed hopper, a pressurizing assembly, a measuring assembly and a discharge belt are arranged in sequence from top to bottom inside the main frame, baffle plates are arranged on the front and rear sides of the discharge belt, a display screen is fixedly connected to the outer wall of the main frame, a hydraulic oil tank is fixedly connected to the side wall of the main frame, the liquid outlet of the hydraulic oil tank is connected to an oil pipe, the other end of the oil pipe is connected to the pressurizing assembly, and a hydraulic pump is installed on the oil pipe.

[0006] Preferably, a plurality of vertical sliding grooves 1 are provided on the inner side wall of the main frame, a lifting assembly is provided in the sliding groove 1, the pressurizing assembly includes a mounting frame, the mounting frame is fixedly connected to the lifting assembly, a sliding groove 2 along the left and right direction is provided on the upper surface of the mounting frame, a first motor is installed in the sliding groove 2, a screw rod 1 is fixedly connected to the output end of the first motor, a threaded block 1 is threadedly connected to the screw rod 1, the threaded block 1 is fixedly connected to the lower surface of the control box, a plurality of hydraulic rods are provided on the lower surface of the control box, and the output ends of the hydraulic rods are fixedly connected to the upper surface of the pressurizing plate.

[0007] Preferably, the lifting assembly includes a second motor, which is fixedly connected in the sliding groove one, and the output end of the second motor is fixedly connected to a vertically arranged screw rod two, and a threaded block two is threadedly connected on the screw rod two, and the threaded block two is fixedly connected to the lower surface of the mounting frame.

[0008] Preferably, the measuring assembly includes a measuring box, which is mounted on a weighing sensor, which is fixedly connected to the inner wall of the main frame, a leveling box is fixedly connected to the outer wall of the measuring box, a leveling port is provided on the side wall of the measuring box above the leveling box, a first groove is provided on the inner wall of the measuring box, a leveling assembly is provided in the first groove, and the bottom surface of the measuring box is a hydraulically controlled sliding plate.

[0009] Preferably, three horizontal sliding grooves are provided on the front and rear inner walls of the measuring box, and the leveling assembly includes a connecting block. A third motor is provided in each of the three sliding grooves, and a horizontally arranged screw rod three is fixedly connected to the output end of the third motor. The connecting block is threadedly connected to the screw rod three, and a leveling plate is fixedly connected to the side wall of the connecting block.

[0010] Preferably, a control system is also included, and the control system includes:

[0011] An action control unit is used to control the execution and stop actions of various components of the coal density measuring vehicle;

[0012] A data calculation unit, used for calculating the actual density of the burning coal based on the detection data;

[0013] The monitoring and alarm unit is used to monitor the working status of each component of the coal density measuring vehicle and to give an alarm when hidden dangers occur.

[0014] Preferably, the data calculation unit includes:

[0015] A displacement sensor, used to detect the actual displacement of the pressure plate;

[0016] Density calculation subunit, used to calculate the actual density of the coal;

[0017] Where ρ is the actual density of the coal; M S M is the mass data monitored by the weighing sensor; D is the pressure exerted by the pressure plate on the coal; g is the acceleration of gravity; B is the width inside the measuring box; L is the length inside the measuring box; A 1 It is the preset coal detection height inside the measuring box; A 2 is the actual displacement of the pressure plate; A 3 It is the displacement of the pressure plate when it moves from its initial position to the preset coal detection height inside the measuring box.

[0018] Preferably, the monitoring alarm unit comprises:

[0019] The operation monitoring subunit is used to monitor whether the working parameters of the various components of the coal density measuring vehicle are within the preset working range, and to give an alarm when the working parameters of the various components of the coal density measuring vehicle exceed the preset working range;

[0020] The coal blockage warning subunit is used to monitor the coal feeding speed, and to give an alarm when the coal feeding speed is greater than or equal to the alarm value of the coal feeding speed.

[0021] Preferably, the coal blocking warning subunit calculates the alarm value of the coal feeding speed based on the following formula:

[0022] Among them, V j is the alarm value of the coal feeding speed; ln is the logarithmic function with e as the base; H S is the actual coal charging height; H Z H is the reference value of coal charging height; 0 is the unit length; θ is the calculation coefficient corresponding to the cross-sectional shape of the feed hopper; V 0 is the calculation reference value of the preset coal feeding speed; e is the natural base number; S d1 is the actual cross-sectional area of ​​the discharge port of the feed hopper; S d10 is the calculation reference value of the preset discharge port cross-sectional area of ​​the feed hopper; σ w is the actual detected value of ambient humidity; σ 0 is the calculated reference value of the preset ambient humidity; 1 is the weighted coefficient of the influence of coal particle size; ω 2 G is the weighted coefficient of the influence of coal humidity; m0 G is the calculation reference value of coal particle size; m is the actual particle size of the coal to be tested; Q m is the actual humidity of the coal to be tested; Q m0 is the calculation reference value of coal humidity; T 0 is the calculated reference value of the preset ambient temperature; T w is the actual detected value of the ambient temperature; || is the absolute value symbol; S d2 H is the actual cross-sectional area of ​​the feed port of the feed hopper; L Y is the height difference between the feed port and the discharge port of the feed hopper; S Y is the usage time of the feed hopper; 0 is the unit duration; Ra S Ra is the roughness of the inner surface of the feed hopper in the initial state, expressed as the arithmetic mean deviation of the profile; 0 It is the calculated reference value of the roughness of the preset inner surface of the feed hopper, expressed as the arithmetic mean deviation of the profile.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] Automatic density detection of coal is completed by coal truck, replacing manual detection of coal density, thus improving the efficiency of coal density detection. The detection process only requires manual addition and recovery of coal, saving a lot of manpower and material resources. The accuracy of coal density detection results is improved by leveling the coal in the measuring box. Baffles are set on the front and rear sides of the unloading belt to avoid splashing of coal blocks during coal recovery, avoid waste of coal and ensure the cleanliness of the detection area. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 is a schematic structural diagram of a pressurizing assembly of the present invention;

[0028] Figure 3 is a schematic diagram of the top view of the mounting frame of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the measuring component of the present invention.

[0030] Reference numerals:

[0031] 1. Main frame; 2. Action wheel; 3. Feed hopper; 4. Pressurizing component; 5. Measuring component; 6. Unloading belt; 7. Baffle plate; 8. Display screen; 9. Hydraulic oil tank; 10. Oil pipeline; 11. Slide slot one; 12. Mounting frame; 13. Slide slot two; 14. First motor; 15. Screw rod one; 16. Thread block one; 17. Control box; 18. Hydraulic rod; 19. Pressurizing plate; 20. Second motor; 21. Screw rod two; 22. Thread block two; 23. Measuring box; 24. Leveling box; 25. Leveling mouth; 26. First groove; 27. Hydraulic control sliding plate; 28. Slide slot three; 29. ​​Third motor; 30. Screw rod three; 31. Connecting block; 32. Leveling plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] Example 1

[0035] An embodiment of the present invention provides a coal density measuring vehicle, including a main frame 1, a moving wheel 2 is arranged under the main frame 1, a feed hopper 3, a pressurizing component 4, a measuring component 5 and a discharge belt 6 are arranged in sequence from top to bottom inside the main frame 1, and baffle plates 7 are arranged on the front and rear sides of the discharge belt 6. A display screen 8 is fixedly connected to the outer wall of the main frame 1, a hydraulic oil tank 9 is fixedly connected to the side wall of the main frame 1, the liquid outlet of the hydraulic oil tank 9 is connected to an oil pipe 10, the other end of the oil pipe 10 is connected to the pressurizing component 4, and a hydraulic pump is installed on the oil pipe 10.

[0036] Preferably, a plurality of vertical sliding grooves 11 are provided on the inner side wall of the main frame 1, a lifting assembly is provided in the sliding groove 11, the pressurizing assembly 4 includes a mounting frame 12, the mounting frame 12 is fixedly connected to the lifting assembly, a sliding groove 2 13 along the left and right directions is provided on the upper surface of the mounting frame 12, a first motor 14 is installed in the sliding groove 2 13, a screw 15 is fixedly connected to the output end of the first motor 14, a threaded block 16 is threadedly connected to the screw 15, the threaded block 16 is fixedly connected to the lower surface of the control box 17, a plurality of hydraulic rods 18 are provided on the lower surface of the control box 17, and the output end of the hydraulic rod 18 is fixedly connected to the upper surface of the pressurizing plate 19.

[0037] Preferably, the lifting assembly includes a second motor 20, which is fixedly connected in a sliding groove 11, and an output end of the second motor 20 is fixedly connected with a vertically arranged screw rod 21, and a threaded block 22 is threadedly connected on the screw rod 21, and the threaded block 22 is fixedly connected to the lower surface of the mounting frame 12.

[0038] Preferably, the measuring component 5 includes a measuring box 23, which is installed on a weighing sensor, which is fixedly connected to the inner wall of the main frame 1. A leveling box 24 is fixedly connected to the outer wall of the measuring box 23. A leveling port 25 is provided on the side wall of the measuring box 23 above the leveling box 24. A first groove 26 is provided on the inner wall of the measuring box 23, and a leveling component is provided in the first groove 26. The bottom surface of the measuring box 23 is a hydraulically controlled sliding plate 27.

[0039] Preferably, horizontal sliding grooves 3 28 are provided on the front and rear inner walls of the measuring box 23, and the leveling assembly includes a connecting block 31. A third motor 29 is provided in each sliding groove 3 28, and the output end of the third motor 29 is fixedly connected to a horizontally arranged screw rod 3 30. The connecting block 31 is threadedly connected to the screw rod 3 30, and the side wall of the connecting block 31 is fixedly connected to a leveling plate 32.

[0040] The beneficial effects of the above technical solution are:

[0041] When measuring the density of coal, first move the density measuring vehicle to a suitable position, perform leveling and calibration of the weighing sensor, at which time the lifting assembly is in a high position and the control box 17 is outside the main frame 1. At this time, add coal to the feed hopper 3, and the coal falls into the measuring box 23 through the feed hopper 3. When the coal in the measuring box 23 reaches a certain height (greater than the coal height required for detection), stop adding coal, and drive the screw 30 to rotate through the third motor 29, so that the leveling plate 32 moves from left to right, and the excess coal is pushed out of the leveling port 25 and falls into the leveling box 24, ensuring the flatness of the coal surface in the detection box and the accuracy of the coal density detection results.

[0042] After the coal is leveled, the control box 17 is translated on the mounting frame 12 until it moves above the measuring box 23, and the height of the pressure plate 19 is adjusted by the lifting assembly to reach the working height, and the density of the coal under natural accumulation and under different pressures is obtained in turn, so as to calculate the density of the coal under different states, and display the test results on the control screen.

[0043] After the density test is completed, a recovery box is placed at the unloading end of the discharge belt 6, and then the hydraulic sliding plate 27 is opened to allow the coal in the measuring box 23 to fall onto the discharge belt 6, and then be transported by the discharge belt 6 into the recovery box to complete the recovery of the coal.

[0044] By arranging the baffle plates 7 on the front and rear sides of the unloading belt 6, the splashing of coal blocks during coal recovery is avoided, the waste of coal is avoided, and the cleanliness of the detection area is ensured. The automatic density detection of coal is completed by the coal truck, which replaces the manual detection of coal density and improves the efficiency of coal density detection. The detection process only requires manual addition and recovery of coal, saving a lot of manpower and material resources. By leveling the coal in the measuring box 23, the accuracy of the coal density detection result is improved.

[0045] Example 2

[0046] On the basis of embodiment 1, a control system is also included, and the control system includes:

[0047] An action control unit is used to control the execution and stop actions of various components of the coal density measuring vehicle;

[0048] A data calculation unit, used for calculating the actual density of the burning coal based on the detection data;

[0049] The monitoring and alarm unit is used to monitor the working status of each component of the coal density measuring vehicle and to give an alarm when hidden dangers occur.

[0050] Preferably, the data calculation unit includes:

[0051] A displacement sensor, used to detect the actual displacement of the pressure plate 19;

[0052] Density calculation subunit, used to calculate the actual density of the coal;

[0053] Where ρ is the actual density of the coal; M S M is the mass data monitored by the weighing sensor; D is the pressure applied by the pressure plate 19 to the coal; g is the acceleration of gravity; B is the width inside the measuring box 23; L is the length inside the measuring box 23; A 1 A is the coal burning detection height preset inside the measuring box 23; 2 A is the actual displacement of the pressure plate 19; 3 It is the displacement of the pressure plate 19 when it moves from the initial state position to the preset coal burning detection height inside the measuring box 23.

[0054] The beneficial effects of the above technical solution are:

[0055] When calculating the density of the coal, the change in volume of the coal after being compressed is taken into account when pressure is applied to the coal, thereby improving the accuracy of the calculated results of the coal density. The actual volume of the coal after being compressed is calculated by measuring the displacement change of the pressure plate 19, thereby reducing the difficulty of data acquisition, improving the accuracy of the data, and further improving the accuracy of the calculated results of the coal density.

[0056] Example 3

[0057] Based on Example 2, the monitoring alarm unit includes:

[0058] The operation monitoring subunit is used to monitor whether the working parameters of the various components of the coal density measuring vehicle are within the preset working range, and to give an alarm when the working parameters of the various components of the coal density measuring vehicle exceed the preset working range;

[0059] The coal blockage warning subunit is used to monitor the coal feeding speed, and to give an alarm when the coal feeding speed is greater than or equal to the alarm value of the coal feeding speed.

[0060] Preferably, the coal blocking warning subunit calculates the alarm value of the coal feeding speed based on the following formula:

[0061] Among them, V j is the alarm value of the coal feeding speed; ln is the logarithmic function with e as the base; H S is the actual coal charging height; H Z H is the reference value of coal charging height; 0 is the unit length; θ is the calculation coefficient corresponding to the cross-sectional shape of the feed hopper 3; V 0 is the calculation reference value of the preset coal feeding speed; e is the natural base number; S d1 is the actual cross-sectional area of ​​the discharge port of the feed hopper 3; S d10 is the calculation reference value of the cross-sectional area of ​​the discharge port of the preset feed hopper 3; σ w is the actual detected value of ambient humidity; σ 0 is the calculated reference value of the preset ambient humidity; 1 is the weighted coefficient of the influence of coal particle size; ω 2 G is the weighted coefficient of the influence of coal humidity; m0 G is the calculation reference value of coal particle size; m is the actual particle size of the coal to be tested; Q m is the actual humidity of the coal to be tested; Q m0 is the calculation reference value of coal humidity; T 0 is the calculated reference value of the preset ambient temperature; T w is the actual detected value of the ambient temperature; || is the absolute value symbol; S d2 H is the actual cross-sectional area of ​​the feed port of the feed hopper 3; L Y is the height difference between the feed port and the discharge port of the feed hopper 3; S Y is the usage time of the feed hopper 3; 0 is the unit duration; Ra SRa is the roughness of the inner surface of the feed hopper 3 in the initial state, expressed as the arithmetic mean deviation of the profile; 0 It is the calculated reference value of the preset roughness of the inner surface of the feed hopper 3, expressed as the arithmetic mean deviation of the profile.

[0062] In this embodiment, the feeding height of the coal refers to the vertical height of the coal from the discharge port of the storage device to the feed port of the feed hopper 3.

[0063] In this embodiment, the operating parameters of the various components of the coal density measuring vehicle include: operating temperature and operating stroke.

[0064] The beneficial effects of the above technical solution are:

[0065] By monitoring whether the working parameters of each component of the coal density measuring vehicle are within the preset working range, when a working component fails during operation (such as exceeding the limit, excessive working temperature, etc.), an alarm can be issued immediately to ensure the safety of the coal density detection process.

[0066] The coal feeding speed is calculated based on the shape, surface roughness, feeding conditions and usage of the feed hopper 3 with a calculation reference value, and then the calculation result is corrected for the first time by the ambient humidity and ambient temperature. After the first correction, a second correction is made according to the properties of the coal (particle size, humidity), thereby obtaining the alarm value of the coal feeding speed, thereby ensuring that the alarm value of the coal feeding speed can be adjusted according to the actual situation. When the feed hopper 3, the coal properties and the environmental conditions change, the fixed alarm value of the coal feeding speed cannot be adapted to the actual situation, resulting in a feeding speed far lower than the actual dangerous value, resulting in too low feeding efficiency, or a feeding speed greater than the actual coal blocking dangerous value, resulting in an increased probability of coal blocking, thereby ensuring the coal feeding efficiency while avoiding blockage at the discharge port of the feed hopper 3, thereby avoiding the waste of human resources in clearing coal blockages, resulting in a decrease in the efficiency of coal density measurement.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A coal density measuring vehicle, characterized in that: The invention comprises a main frame (1), a moving wheel (2) is arranged below the main frame (1), a feed hopper (3), a pressurizing component (4), a measuring component (5) and a discharge belt (6) are arranged in sequence from top to bottom inside the main frame (1), a material blocking plate (7) is arranged at the front and rear sides of the discharge belt (6), a display screen (8) is fixedly connected to the outer wall of the main frame (1), a hydraulic oil tank (9) is fixedly connected to the side wall of the main frame (1), an outlet of the hydraulic oil tank (9) is connected to an oil delivery pipe (10), the other end of the oil delivery pipe (10) is connected to the pressurizing component (4), and a hydraulic pump is installed on the oil delivery pipe (10).

2. A coal density measuring vehicle according to claim 1, characterized in that: A plurality of vertical sliding grooves (11) are arranged on the inner side wall of the main frame (1), and a lifting assembly is arranged in the sliding groove (11). The pressurizing assembly (4) comprises a mounting frame (12), and the mounting frame (12) is fixedly connected to the lifting assembly. A sliding groove (13) along the left-right direction is arranged on the upper surface of the mounting frame (12), and a first motor (14) is installed in the sliding groove (13). A screw rod (15) is fixedly connected to the output end of the first motor (14), and a threaded block (16) is threadedly connected to the screw rod (15). The threaded block (16) is fixedly connected to the lower surface of the control box (17). A plurality of hydraulic rods (18) are arranged on the lower surface of the control box (17), and the output end of the hydraulic rod (18) is fixedly connected to the upper surface of the pressurizing plate (19).

3. A coal density measuring vehicle according to claim 2, characterized in that: The lifting assembly comprises a second motor (20), the second motor (20) is fixedly connected in the sliding groove (11), the output end of the second motor (20) is fixedly connected with a vertically arranged screw rod (21), the screw rod (21) is threadedly connected with a thread block (22), and the thread block (22) is fixedly connected to the lower surface of the mounting frame (12).

4. A coal density measuring vehicle according to claim 1, characterized in that: The measuring assembly (5) comprises a measuring box (23), the measuring box (23) being mounted on a weighing sensor, the weighing sensor being fixedly connected to the inner wall of the main frame (1), the outer wall of the measuring box (23) being fixedly connected to a leveling box (24), a leveling opening (25) being arranged on the side wall of the measuring box (23) above the leveling box (24), a first groove (26) being arranged on the inner wall of the measuring box (23), a leveling assembly being arranged in the first groove (26), and the bottom surface of the measuring box (23) being a hydraulically controlled sliding plate (27).

5. A coal density measuring vehicle according to claim 4, characterized in that: The front and rear inner walls of the measuring box (23) are provided with three horizontal sliding grooves (28), and the leveling assembly includes a connecting block (31). A third motor (29) is respectively provided in each of the three sliding grooves (28). The output end of the third motor (29) is fixedly connected with a horizontally arranged screw rod three (30). The connecting block (31) is threadedly connected with the screw rod three (30), and the side wall of the connecting block (31) is fixedly connected with a leveling plate (32).

6. A coal density measuring vehicle according to claim 4, characterized in that: It also includes a control system, which includes: An action control unit is used to control the execution and stop actions of various components of the coal density measuring vehicle; A data calculation unit, used for calculating the actual density of the burning coal based on the detection data; The monitoring and alarm unit is used to monitor the working status of each component of the coal density measuring vehicle and to give an alarm when hidden dangers occur.

7. A coal density measuring vehicle according to claim 6, characterized in that: The data calculation unit includes: A displacement sensor, used to detect the actual displacement of the pressure plate (19); Density calculation subunit, used to calculate the actual density of the coal; Where ρ is the actual density of the coal; M S M is the mass data monitored by the weighing sensor; D is the pressure applied by the pressure plate (19) to the coal; g is the acceleration due to gravity; B is the width inside the measuring box (23); L is the length inside the measuring box (23); A1 is the preset coal burning detection height inside the measuring box (23); A2 is the actual displacement of the pressure plate (19); and A3 is the displacement of the pressure plate (19) when it moves from the initial state position to the preset coal burning detection height inside the measuring box (23).

8. A coal density measuring vehicle according to claim 6, characterized in that: The monitoring alarm unit includes: The operation monitoring subunit is used to monitor whether the working parameters of the various components of the coal density measuring vehicle are within the preset working range, and to give an alarm when the working parameters of the various components of the coal density measuring vehicle exceed the preset working range; The coal blockage warning subunit is used to monitor the coal feeding speed, and to give an alarm when the coal feeding speed is greater than or equal to the alarm value of the coal feeding speed.

9. A coal density measuring vehicle according to claim 8, characterized in that: The coal blocking warning subunit calculates the alarm value of the coal feeding speed based on the following formula; Among them, V j is the alarm value of the coal feeding speed; ln is the logarithmic function with e as the base; H S is the actual coal charging height; H Z is the reference value of the coal feeding height; H0 is the unit length; θ is the calculation coefficient corresponding to the cross-sectional shape of the feed hopper (3); V0 is the calculation reference value of the preset coal feeding speed; e is the natural base; S d1 is the actual cross-sectional area of ​​the discharge port of the feed hopper (3); S d10 is the calculation reference value of the cross-sectional area of ​​the discharge port of the preset feed hopper (3); σ w is the actual detection value of the ambient humidity; σ0 is the preset calculation reference value of the ambient humidity; ω1 is the weighted coefficient of the influence of the coal particle size; ω2 is the weighted coefficient of the influence of the coal humidity; G m0 G is the calculation reference value of coal particle size; m is the actual particle size of the coal to be tested; Q m is the actual humidity of the coal to be tested; Q m0 is the calculation reference value of coal humidity; T0 is the calculation reference value of the preset ambient temperature; T w is the actual detected value of the ambient temperature; || is the absolute value symbol; S d2 H is the actual cross-sectional area of ​​the feed opening of the feed hopper (3); L Y is the height difference between the feed port and the discharge port of the feed hopper (3); S is the time the feed hopper (3) has been used; Y0 is the unit time; Ra S is the roughness of the inner surface of the feed hopper (3) in the initial state, expressed as the arithmetic mean deviation of the profile; Ra0 is the calculated reference value of the preset roughness of the inner surface of the feed hopper (3), expressed as the arithmetic mean deviation of the profile.

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