Automobile coal sampling and measuring mechanism

Abstract

The utility model relates to the technical field of coal sampling, and discloses an automobile coal sampling and measuring mechanism, which is arranged on a sampling area and a parking area before leaving a factory, and comprises a first support frame arranged in the sampling area, a sampling machine arranged on the first support frame and used for carrying out coal sampling on a target vehicle, a second supporting frame is installed on a parking area before a target vehicle leaves a factory, a first distance measuring sensor is fixedly installed on the second supporting frame, the first distance measuring sensor is located above the target vehicle and used for obtaining a first distance measuring distance, a first support is installed on the first supporting frame and located above the sampling machine, and a second support is installed on the second supporting frame and used for obtaining a second distance measuring distance. A second distance measuring sensor is fixedly installed on the first support and used for obtaining a second distance measuring distance, and the sampling machine is used for obtaining the actual sampling depth. According to the utility model, the sampling accuracy is improved, and the sampling safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of coal sampling technology, specifically to a vehicle coal sampling and measuring mechanism. Background Technology

[0002] In many coal-based industrial production processes, the stability of coal quality is crucial to product quality. Excessive fluctuations in coal quality can lead to instability in the production process and a decline in product quality. For example, in the coal chemical industry, differences in the quality of raw coal can affect the progress of chemical reactions, thereby impacting the yield and quality of chemical products. In coal trading, the quality and quantity of coal are important bases for settlement. The test results obtained from truck coal sampling can provide accurate coal quality data for both buyers and sellers, ensuring fair and equitable trade settlements. Taking calorific value as an example, coals with different calorific values ​​have significantly different prices; accurate sampling and analysis can avoid trade disputes arising from quality controversies, protecting the economic interests of both parties.

[0003] In one existing technology, structural data of the coal truck's compartment can be recorded by a data logger before sampling. However, this is time-consuming and labor-intensive. Building on this, a sampling depth judgment system for a coal truck sampling machine, as described in patent application CN202222117076.5, uses a video depth acquisition device at the sampling machine's driving lane to obtain the height of the coal truck's compartment to determine the sampling depth. However, obtaining the truck's compartment height before sampling typically involves measuring the outer surface height, which may differ from the actual height of the compartment. This can easily lead to inaccurate data on the actual height of the compartment obtained during sampling. When the sampling machine penetrates deep into the compartment, it may puncture the bottom, posing safety hazards, causing economic losses, and resulting in a rough sampling process. Utility Model Content

[0004] The aim is to provide a basic solution, a vehicle coal sampling and measurement mechanism, to address the safety hazards and crude sampling issues associated with vehicle coal sampling.

[0005] A vehicle coal sampling and measurement mechanism is installed in a sampling area and a pre-departure parking area. It includes a first support frame fixedly installed in the sampling area, with a sampler mounted on the first support frame. The sampler is used to sample coal from a target vehicle. The vehicle coal sampling and measurement mechanism is used to obtain the actual height of the coal pile loaded on the target vehicle. It also includes a second support frame installed in the pre-departure parking area, with a first distance sensor fixedly installed on the second support frame. When the target vehicle carrying coal finishes unloading and before leaving the factory area, it temporarily parks in the pre-departure parking area. The first distance sensor is located above the target vehicle and is used to measure and obtain a first distance, which is the height distance between the bottom of the target vehicle's cargo compartment and the first distance sensor. The height distance between the first distance sensor and the ground in the pre-departure parking area is a first calibration distance. A first bracket is fixedly installed on a support frame, and a second ranging sensor is fixedly installed on the first bracket. The second ranging sensor is located above the sampler. The height distance between the second ranging sensor and the ground in the sampling area is set as the second calibration distance. The second ranging sensor is used to obtain the second ranging distance, which is the height distance between the coal pile loaded by the target vehicle and the second ranging sensor when the vehicle enters the sampling area and stops after reloading coal. A counter is fixedly installed on the first bracket, close to the second ranging sensor. The counter is communicatively connected to both the first and second ranging sensors. The counter is used to subtract the first ranging distance from the first calibration distance to obtain the corresponding chassis height of the target vehicle. The counter is also used to subtract the second ranging distance and the chassis height of the target vehicle from the second calibration distance to obtain the actual coal pile height.

[0006] Beneficial effects: First, by obtaining the actual distance between the bottom of the carriage and the ground (the chassis height of the target vehicle) through the first ranging sensor and the height of the coal pile through the second ranging sensor, the sampler can accurately calculate the actual sampling depth based on these data, thereby avoiding sampling failures or damage to the carriage caused by inaccurate carriage height measurement, and ensuring the accuracy and reliability of the sampling process.

[0007] Secondly, accurately measuring the actual height of the bottom of the carriage allows the sampling machine to effectively avoid puncturing the bottom of the carriage during sampling, reducing equipment damage and potential safety hazards, and ensuring the safety of the sampling operation.

[0008] Meanwhile, before each vehicle leaves the factory, the first ranging sensor will remeasure the actual distance between the bottom of the carriage and the ground. Even if the carriage is repaired or modified during transportation, accurate data can be obtained in real time to ensure that the calculation of sampling depth is always based on the latest vehicle status.

[0009] Finally, by measuring the time a vehicle spends temporarily in the parking area before leaving the factory, the vehicle's chassis height is known the next time it enters the factory, allowing it to drive directly into the sampling area without additional vehicle stops or inspection procedures, thus saving time and costs and improving sampling efficiency.

[0010] Preferably, a vehicle barrier is installed in the parking area before leaving the factory. The vehicle barrier is used to stop or allow the target vehicle to pass. The distance between the vehicle barrier and the second support frame is 3-4 meters.

[0011] Beneficial effects: First, the barrier poles, a common and standard feature at coal plant entrances, force target vehicles to stop in the designated parking area before leaving the plant, providing a stable measurement opportunity for the first ranging sensor. This design ensures the vehicle remains stationary during measurement, avoiding measurement errors caused by vehicle movement, thus improving the accuracy and reliability of the measurement results. Second, setting the distance between the barrier pole and the second support frame at 3-4 meters ensures sufficient space for vehicles to stop and wait for measurement, while also ensuring the sensor can efficiently complete its measurement task. This rational spatial layout tightly integrates the measurement process with the normal vehicle departure process, eliminating the need for additional vehicle dwell time or complex operating procedures, thereby optimizing the entire sampling and measurement process. By rationally planning the distance between the barrier pole and the second support frame, the necessary measurement tasks are completed while the vehicle is waiting to leave the plant, avoiding additional vehicle waiting time due to measurement, improving the overall system efficiency, and reducing unnecessary vehicle dwell time within the plant area, thus increasing vehicle turnover efficiency.

[0012] Preferably, the first calibration distance is 5-6 meters.

[0013] Beneficial effects: First, the first calibration distance is the minimum distance between the first ranging sensor and the target vehicle's driving surface. Setting it to 5-6 meters ensures that the sensor has sufficient measurement range to cover the bottom of the vehicle compartment while avoiding a decrease in measurement accuracy due to excessive distance, ensuring that the ranging sensor can accurately obtain the actual distance between the bottom of the vehicle compartment and the sensor (the first ranging distance). Second, the 5-6 meter distance range is optimized to meet the measurement requirements of different vehicle models' compartment heights while ensuring the accuracy and stability of the ranging sensor within this distance range. This setting effectively reduces measurement errors caused by distances that are too close or too far, thereby improving the reliability and accuracy of the entire measurement system.

[0014] Preferably, the third calibration distance is 4-5 meters.

[0015] Beneficial effects: The third calibration distance refers to the fixed distance between the second ranging sensor and the sampler. Setting this distance within the range of 4-5 meters ensures that the sampler accurately calculates the actual sampling depth based on the data provided by the ranging sensor during the sampling process. This distance range guarantees sufficient operating space for the sampler and allows the ranging sensor to effectively cover the measurement range of the coal pile height, thereby improving the accuracy of the sampling depth calculation. Simultaneously, the 4-5 meter third calibration distance can adapt to different coal pile heights and sampling requirements, exhibiting good versatility and flexibility. Furthermore, this distance range avoids mutual interference between the sampler and the ranging sensor due to excessively close distances, or decreased measurement accuracy due to excessively large distances, thus ensuring the safety and reliability of the sampling process.

[0016] Preferably, the first ranging sensor is a GUL70 radar.

[0017] Preferably, the second support frame includes a first long rod and a first crossbar. The first long rod is fixedly installed on the ground in the parking area before the target vehicle leaves the factory, and the first crossbar is fixedly installed on the first long rod and perpendicular to the first long rod. The first distance sensor is fixedly installed on the first crossbar and is away from the first long rod.

[0018] Beneficial effects: First, by mounting the first ranging sensor on a crossbar away from the first long rod, it can be directly facing the target vehicle, avoiding obstruction or interference with the measurement signal due to the support structure. This ensures that the ranging sensor can acquire distance data between the vehicle floor and the sensor at the optimal angle and position, improving measurement accuracy and reliability. Second, the design of the first long rod being fixed to the ground and the first crossbar being perpendicular to it provides a stable support structure for the ranging sensor. This structure effectively reduces the impact of uneven ground or vehicle vibration on the measurement accuracy of the ranging sensor, ensuring stable operation under various conditions. Furthermore, this support frame design allows the ranging sensor to be installed at a greater distance from the vehicle, thereby expanding the measurement range and adapting to vehicles of different heights and sizes. Simultaneously, the vertically mounted crossbar structure facilitates adjustment of the sensor's angle and position to meet different measurement needs.

[0019] Preferably, the distance between the first ranging sensor and the first long rod is 2-3 meters.

[0020] Beneficial effects: First, a distance of 2-3 meters allows the sensor to be directly aligned with the bottom of the target vehicle's cargo compartment, avoiding limited measurement range due to excessive proximity or decreased measurement accuracy due to excessive distance. Second, this distance range effectively reduces interference from the first long rod on the sensor's measurement signal, ensuring that the ranging sensor can accurately obtain the minimum distance (first ranging distance) between the bottom of the cargo compartment and the sensor. Furthermore, a reasonable distance setting ensures that the sensor has sufficient field of view when the vehicle is stationary, adapting to different vehicle heights and dimensions, and improving the system's versatility and flexibility.

[0021] Preferably, a first vision sensor is also fixedly installed on the second support frame. The first vision sensor is used to identify whether there is a target vehicle in the pre-departure parking area. The first vision sensor is close to the first ranging sensor and is electrically connected to the first ranging sensor. A second vision sensor is also fixedly installed on the first bracket. The second vision sensor is used to obtain the cross-sectional structure of the target vehicle's cargo compartment. The second sensor is close to the second ranging sensor, and the first vision sensor is electrically connected to the first ranging sensor.

[0022] Beneficial Effects: The design of installing a first vision sensor on the second support frame and a second vision sensor on the first bracket significantly enhances the intelligence and accuracy of the vehicle coal sampling and measurement system. The first vision sensor, located close to the first ranging sensor, can identify the presence of target vehicles in the pre-departure parking area in real time. This ensures that the ranging sensor only initiates measurement when the vehicle is stationary and in the correct position, avoiding invalid measurements due to vehicles not being in place or misjudgments, thus improving the system's automation and reliability. Simultaneously, the second vision sensor, located close to the second ranging sensor, acquires the cross-sectional structure of the target vehicle's cargo compartment. This function provides the sampler with richer information about the compartment's shape, helping it to more accurately calculate sampling depth and position, avoiding the impact of irregular compartment shapes or uneven coal distribution on sampling results. Through the electrical connection and collaborative operation of the vision and ranging sensors, the system achieves intelligent control throughout the entire process, from vehicle identification and position determination to cargo compartment structure analysis. This not only improves the accuracy of measurement and sampling but also enhances the overall stability and safety of the system, reduces manual intervention, and increases work efficiency.

[0023] Beneficial effects of this utility model

[0024] While existing technologies use video to obtain the height of the outer surface of a coal truck, this height is not the actual height inside the truck. This is because the bottom of the truck has a certain thickness, and when identifying the outer surface, it's easy to mistake the barriers near the wheels. These barriers are located at the bottom of the truck and are roughly parallel to the truck body, making the measurement of the outer surface height inaccurate. The actual height inside the truck is the actual height of the coal pile; therefore, understanding the actual height inside the truck is crucial to determining the actual height of the coal pile and obtaining accurate samples.

[0025] First, the target vehicle leaves the factory empty after delivering coal. This invention utilizes a first ranging sensor installed in the parking area before leaving the factory to obtain the actual height inside the vehicle's cargo compartment. When the target vehicle leaves the factory, it typically passes a barrier and pauses there until the barrier rises. During this waiting period, the first ranging sensor obtains a first ranging distance. The minimum distance between the first ranging sensor and the target vehicle's driving surface in the parking area before leaving the factory is set as the first calibration distance. By setting this distance based on the planar distance parameter of the first ranging sensor, the actual distance from the bottom of the vehicle's cargo compartment to the ground can be directly obtained, i.e., the first parameter distance. Then, the distance between the second ranging sensor and the sampler is fixed, which is the third calibration distance. The second ranging sensor also obtains the distance between the coal pile inside the target vehicle and the second ranging sensor. Through simple calculation, the actual height of the coal pile can be obtained. Obtaining the actual height of the coal pile not only allows for accurate sampling but also prevents the sampler from puncturing the cargo compartment, ensuring safety during sampling.

[0026] Secondly, since the vehicle stops at the barrier pole, the distance between the bottom of the target vehicle's cargo compartment and the ground is directly obtained, which does not affect the actual operation of the target vehicle. In other words, it does not add any additional inspection or data collection processes to the target vehicle, thus saving time in one of the processes of the entire coal transportation process.

[0027] Furthermore, the distance between the car barrier pole and the second support frame is 3-4 meters, and the distance between the first distance sensor and the first long pole is 2-3 meters. The first distance sensor is directly facing the target vehicle, so that the first distance sensor can directly obtain the accurate distance between the bottom of the car body and the first distance sensor.

[0028] Meanwhile, since a weighbridge is typically installed in the parking area before the vehicle leaves the factory, and the weighbridge is used to determine the load of the target vehicle, the weighing process sends a corresponding signal to the first ranging sensor, enabling the sensor to perform the corresponding measurement. Thus, by combining this method with existing devices, accurate sampling values ​​can be obtained at a low cost without the need for other technical devices, saving corresponding costs.

[0029] Finally, because the target vehicles may undergo maintenance after leaving the factory area, such as repairs to the cargo compartment due to internal damage, the thickness of the cargo compartment bottom may be increased during repairs. This invention, by conducting measurements before each target vehicle leaves the factory, ensures real-time and dynamic acquisition of real-time data of the target vehicle during coal transport into and out of the factory, even after maintenance of the cargo compartment bottom, guaranteeing accurate sampling each time. Attached Figure Description

[0030] Figure 1 This is a schematic diagram (a) of a vehicle coal sampling and measuring mechanism according to this embodiment;

[0031] Figure 2 This is a schematic diagram (b) of a vehicle coal sampling and measuring mechanism according to this embodiment;

[0032] Figure 3 This is a side view of a vehicle coal sampling and measuring mechanism according to this embodiment. Detailed Implementation

[0033] The following detailed explanation illustrates the specific implementation methods:

[0034] The markings in the accompanying drawings include:

[0035] 1. Pre-delivery parking area; 2. Sampling area; 3. Second support frame; 4. First support frame; 5. First distance sensor; 6. Second distance sensor; 7. First support; 8. Parking barrier; 9. First long pole; 10. First crossbar; 11. Ground scale; 12. Sampling machine.

[0036] Example

[0037] like Figure 1 and Figure 2As shown, this embodiment provides a vehicle coal sampling and measurement mechanism including a sampling area 2 and a pre-departure parking area 1. A vehicle barrier 9 and a weighbridge 12 are installed in the pre-departure parking area 1. The vehicle barrier 9 and weighbridge 12 are existing technologies, and are commonly installed at the entrances of coal-using plants. This embodiment utilizes these existing devices in conjunction with existing equipment in coal-using plants, effectively reducing costs and saving coal transportation time for the target vehicles.

[0038] like Figure 3 As shown, a second support frame 3 is fixedly installed on the ground in the pre-departure parking area 1, 9a meters away from the vehicle barrier pole, where a is 3-4 meters. The second support frame 3 includes a first long pole 10 and a first crossbar 11. The first long pole 10 is fixedly installed on the ground in the pre-departure parking area 1, and the first crossbar 11 is fixedly installed on the first long pole 10, perpendicular to the first long pole 10. A first distance measuring sensor 6 is fixedly installed on the first crossbar 11, and the distance between the first distance measuring sensor 6 and the first long pole 10 is 2-3 meters. The first distance measuring sensor 6 is located above the target vehicle and faces the bottom of the target vehicle's cargo compartment. The minimum distance between the first sensor and the target vehicle's driving surface in the pre-departure parking area 1 is set as a first calibration distance, which is b, and is 5-6 meters. In this embodiment, the target vehicle's driving surface is the surface of the weighbridge 12; in other embodiments, the target vehicle's driving surface can also be the ground. The first ranging sensor 6 is a GUL70 radar. The first parameter, distance, is the chassis height of the target vehicle.

[0039] In sampling area 2, a first support frame 4 is provided, and a sampler 13 is installed on the first support frame 4. The sampler 13 is used to sample coal from the target vehicle. A first bracket 5 is installed on the first support frame 4, located above the sampler 13. A second ranging sensor 7 is fixedly installed on the first bracket 5. The height distance between the second ranging sensor 7 and the driving surface of the target vehicle in sampling area 2 is set as a second calibration distance, which can be routinely set by technicians. Figure 3As shown, the height distance between the second ranging sensor 7 and the sampler 13 is set as the third calibration distance, denoted as c, where c is 4-5 meters. In this embodiment, the sampler 13 is equipped with a host computer, enabling communication between the sampler 13 and the first ranging sensor 6 and the second ranging sensor 7. The sampler 13 is used to calculate the actual sampling depth by combining the first parameter distance, the second calibration distance, the third calibration distance, and the second ranging distance. In other embodiments, a host computer is also included. The host computer may not be located in the sampler 13 but in a conventional location within the factory. It can not only control the operation of the sampler 13 but also analyze the sampling position. The host computer is electrically connected to the first ranging sensor 6 and the second ranging sensor 7. The second ranging sensor 7 is a GUL70 radar. A counter is fixedly installed on the first bracket 5, close to the second ranging sensor 7. The counter is communicatively connected to both the first ranging sensor 6 and the second ranging sensor 7. The counter is used to subtract the first ranging distance from the first calibrated distance to obtain the corresponding chassis height of the target vehicle. The counter is also used to subtract the second ranging distance and the chassis height of the target vehicle from the second calibrated distance to obtain the actual coal pile height. In this embodiment, the host computer can also be the counter.

[0040] The second support includes a second long rod and a second crossbar. The second long rod is fixedly mounted on the first support frame 4 and is parallel to the first support frame 4. The second crossbar is perpendicular to the second long rod and fixedly mounted on the second long rod. The second ranging sensor 7 is fixedly mounted on the second crossbar, and the ranging direction of the second ranging sensor 7 is directly facing the ground of the sampling area 2. The second crossbar extends from the first support frame 4. This prevents the sampling machine 13 from obstructing the second ranging sensor 7 from below, thus preventing the second sensor from accurately identifying the position of the target vehicle and reducing interference from the sampling machine 13.

[0041] In another embodiment, if the weighbridge 12 is not installed on the ground, the second support frame 3 includes a first long rod 10 and a first crossbar 11. The first long rod 10 is fixedly installed on the ground of the target vehicle pre-departure parking area 1, and the first crossbar 11 is fixedly installed on the first long rod 10, perpendicular to the first long rod 10. The first distance sensor 6 is fixedly installed on the first crossbar 11 and is located away from the first long rod 10. The first visual sensor can be used to determine whether the target vehicle has driven onto the ground of the corresponding pre-departure parking area 1.

[0042] Implementation principle of this embodiment

[0043] When a target vehicle first enters the plant for coal sampling, conventional sampling values ​​can be used to prevent safety accidents. Before the target vehicle leaves the plant, its license plate is recorded, and each license plate corresponds to a specific target vehicle. After unloading coal, the target vehicle temporarily stops in the pre-exit parking area 1 to wait for the barrier 9 to rise. At this time, the first ranging sensor 6 acquires a first ranging distance, which is the minimum distance between the bottom of the truck bed and the first ranging sensor 6. Since the first ranging sensor 6 is fixedly installed, the minimum distance between the target vehicle's driving surface in the pre-exit parking area 1 is set as the first calibration distance. By subtracting the first ranging distance from the first calibration distance, the actual distance between the bottom of the truck bed and the target vehicle's driving surface can be obtained. The host computer records the license plate number and the corresponding actual distance between the bottom of the truck bed and the target vehicle's driving surface, i.e., the first parameter distance.

[0044] Then, when the target vehicle enters the plant with a second load of coal and travels to sampling area 2, the second ranging sensor 7 acquires a second ranging distance, which is the distance between the coal pile loaded in the target vehicle and the second ranging sensor 7. Since the second ranging sensor 7 is fixedly installed and the sampler 13 is in a fixed initial position when not activated, the distance between the second ranging sensor 7 and the target vehicle's travel surface in sampling area 2 is set as the second calibration distance, and the distance between the second ranging sensor 7 and the sampler 13 is set as the third calibration distance. By subtracting the third calibration distance, the first parameter distance, and the third calibration distance from the second calibration distance, the actual coal pile height can be obtained, and the sampler 13 can obtain the corresponding accurate and actual sampling value.

[0045] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0046] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0047] It should be understood that the term "and / or" used in this document is merely a description of the same field in the related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0048] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0049] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A coal sampling measuring mechanism for vehicles, arranged on a sampling area and a pre-delivery parking area, comprising a first support frame fixedly installed on the sampling area, and a sampling machine installed on the first support frame, the sampling machine being used for coal sampling of target vehicles, characterized in that, The automobile coal sampling measurement mechanism is used for obtaining the actual height of the coal loaded on the target vehicle, and further comprises a second support frame installed on a pre-plant parking area of the target vehicle, and a first distance measuring sensor fixedly installed on the second support frame; When the target vehicle loaded with coal drives out of the plant area and temporarily parks in the pre-plant parking area before completing unloading, the first distance measuring sensor is located above the target vehicle and is used for measuring and obtaining a first distance measuring distance, which is the height distance between the bottom of the vehicle compartment of the target vehicle and the first distance measuring sensor; the height distance between the first distance measuring sensor and the ground of the pre-plant parking area is a first calibration distance; A first support is fixedly installed on the first support frame, a second distance measuring sensor is fixedly installed on the first support, and the second distance measuring sensor is located above the sampling machine; a second calibration distance is set for the height distance between the second distance measuring sensor and the ground of the sampling area, the second distance measuring sensor is used for obtaining a second distance measuring distance, which is the height distance between the coal loaded by the target vehicle when the target vehicle loaded with coal drives into the sampling area and parks and the second distance measuring sensor; A counter is fixedly installed on the first support, the counter is close to the second distance measuring sensor, and the counter is in communication connection with the first distance measuring sensor and the second distance measuring sensor; the counter is used for subtracting the first distance measuring distance from the first calibration distance to obtain the chassis height of the corresponding target vehicle; and the counter is further used for subtracting the second distance measuring distance and the chassis height of the target vehicle from the second calibration distance to obtain the actual height of the coal pile.

2. The automobile coal sampling and measuring mechanism according to claim 1, wherein A stop post is installed on the pre-plant parking area, the stop post is used for stopping or releasing the target vehicle, and the distance between the stop post and the second support frame is 3-4 m.

3. The car coal sampling measuring mechanism according to claim 1, characterized in that, The first calibration distance is 5-6 m.

4. The car coal sampling measuring mechanism according to claim 1, wherein, The third calibration distance is 4-5 m.

5. The car coal sampling measuring mechanism according to claim 1, wherein, The model of the first distance measuring sensor is GUL70 radar.

6. The car coal sampling measuring mechanism according to claim 1, wherein, The second support frame comprises a first long rod and a first cross rod, the first long rod is fixedly installed on the ground of the pre-plant parking area of the target vehicle, the first cross rod is fixedly installed on the first long rod, and the first cross rod is perpendicular to the first long rod; the first distance measuring sensor is fixedly installed on the first cross rod and away from the first long rod.

7. The car coal sampling measuring mechanism according to claim 6, characterized in that, The distance between the first distance measuring sensor and the first long rod is 2-3 m.

8. The car coal sampling measuring mechanism according to claim 1, wherein, A first visual sensor is further fixedly installed on the second support frame, the first visual sensor is used for identifying whether the target vehicle exists in the pre-plant parking area, the first visual sensor is close to the first distance measuring sensor, and the first visual sensor is in electrical connection with the first distance measuring sensor; A second visual sensor is further fixedly installed on the first support, the second visual sensor is used for obtaining the cross-sectional structure of the vehicle compartment of the target vehicle, the second sensor is close to the second distance measuring sensor, and the first visual sensor is in electrical connection with the first distance measuring sensor.

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