A novel bias test method and apparatus for automotive sampling machine systems

Abstract

This application discloses a novel bias test method and apparatus for an automotive sampling machine system, comprising the following steps: Step 1: Arranging a sampling bucket and sampling platform directly below the sampler; Step 2: Dividing the material into two portions of the same quality using a divider, one portion of which is used for sampling by the automotive sampling machine system as machine sampling, and the other portion of which is used for manual sample preparation as a reference sample; Step 3: Lowering the sampler to its lowest point; Step 4: Pouring one portion of the material from Step 2 into the sampling bucket, and placing a waste sample collector between the sampler and the sampling bucket; Step 5: Continuing to lower the sampler into the sampling bucket, the first waste sample falls onto the waste sample collector, until the sampler reaches the bottom of the sampling bucket, at which point the first waste sample completely falls onto the waste sample collector; This application has the advantages of high safety, high reliability, short construction period, easy operation, and easy promotion.

Description

Technical Field

[0001] This application belongs to the field of automotive sampling machine system performance testing technology, and in particular relates to a novel automotive sampling machine system bias testing method and device. Background Technology

[0002] As a vehicle sampling system specifically designed for automobiles as raw materials entering the factory, it is suitable for industries such as power, metallurgy, coal, chemical, and ports. Its features include fully automatic sampling, sample preparation, sample collection, and sample disposal. Sampling points are randomly selected in the vehicle compartment, and the sampling points are different for each vehicle, ensuring the representativeness and impartiality of the samples.

[0003] As automotive samplers continue to be used, their performance will decline to varying degrees. Therefore, performance testing is necessary to determine the equipment's reliability. Performance testing consists of two parts: precision measurement and bias testing. Precision measurement checks for random errors in the sampler's sampling scheme; bias testing detects systematic errors in the sampler. When precision does not meet expectations, it can be improved by adjusting the sampling scheme. When bias testing fails to meet standards, it is necessary to analyze which component or subsystem of the automotive sampler is malfunctioning. Traditional precision measurement and bias testing methods require manual drilling to obtain reference samples, which is risky, inefficient, and results in poor sample representativeness.

[0004] Therefore, it is imperative to develop a novel bias testing method for automobile sampling machines to address the problems of high risk, low efficiency, and poor sample representativeness caused by the need to conduct bias testing on the top of the vehicle body, which is a requirement of traditional bias testing methods. Summary of the Invention

[0005] To address the aforementioned problems, this application provides a novel bias testing method and apparatus for an automotive sampling machine system. This application uses a mobile testing platform to replace the vehicle for testing, offering advantages such as high safety, strong reliability, short construction period, ease of operation, and easy promotion. The technical solution is as follows:

[0006] The first aspect of this application provides a novel bias test method for an automotive sampling machine system, comprising the following steps: Step 1: Arranging a sampling bucket and a sampling platform directly below the sampler, with the sampling bucket located on the sampling platform; Step 2: Dividing the material into two portions of the same quality using a divider, the mass of the two portions being consistent with the loading capacity of the sampling bucket, one portion of which is used for sampling by the automotive sampling machine system as machine sampling, and the other portion of which is used for manual sample preparation as a reference sample; Step 3: Lowering the sampler to its lowest point and measuring the height of the sampler from the ground, adjusting the height of the sampling platform from the ground to the height required for conducting the automotive sampling machine bias test; Step 4: Pouring one portion of the material from Step 2 into the sampling bucket, lowering the sampler and aligning the sampler with the sampling platform... Corresponding to the sampling bucket, when the sampler descends to the opening of the sampling bucket, a waste sample collector is placed between the sampler and the sampling bucket; Step 5: The sampler continues to descend and enters the sampling bucket, and the first waste sample falls onto the waste sample collector until the sampler descends to the bottom of the sampling bucket, at which point the first waste sample completely falls onto the waste sample collector, and then the sampler is lifted; Step 6: Steps 1 to 5 are repeated to complete the collection of the second waste sample and the retained sample, and the first waste sample, the second waste sample, and the retained sample are used as machine samples; Step 7: Another sample of material from Step 2 is manually prepared as a reference sample, and the reference sample and the machine sample are used as a subsample pair; Step 8: Steps 6 and 7 are repeated until the required number of subsample pairs are collected.

[0007] A second aspect of this application provides a novel bias testing device for an automotive sampling machine system, comprising a sampler and a sampling platform. The sampling platform is located below the sampler, and a sampling bucket corresponding to the sampler is provided on the sampling platform. The sampler can move toward the sampling bucket and extend into the sampling bucket to perform sampling. The sampling platform is a liftable structure, and the height of the sampling platform above the ground can be set according to the different heights the sampler descends toward the sampling bucket, so that the height of the sampling platform above the ground is consistent with the height of the sampler above the ground.

[0008] For example, in one embodiment of the novel automotive sampling system bias test apparatus, the discarded sample collector includes a plate with perforations that are adapted to the sampler so that the sampler can pass through the perforations when it moves toward the sampling bucket.

[0009] For example, in the bias test apparatus of the novel automotive sampling system provided in one embodiment, when the sampler moves toward the sampling barrel and extends into the sampling barrel to collect samples, the discarded sample falls onto the plate around the perforation of the discarded sample collector.

[0010] For example, in one embodiment of the novel automotive sampling system bias test apparatus, a switch door is provided at the bottom of the sampling barrel so that the sampling barrel can be opened away from the bottom of the sampler.

[0011] For example, in one embodiment of the novel automotive sampling machine system bias test device, the sampling platform includes a platform panel with a slot on the platform panel, and the sampling bucket is locked in the slot to limit and fix the sampling bucket.

[0012] For example, in one embodiment of the novel automotive sampling machine system bias testing apparatus, the sampling platform further includes a base, and an electric lifting rod for supporting the platform panel and adjusting the height of the sampling platform is provided between the base and the platform panel.

[0013] For example, in one embodiment of the novel automotive sampling machine system bias test apparatus, a motor is provided on the base, and the output end of the motor is connected to the end of the electric lifting rod away from the platform panel to drive the electric lifting rod to move horizontally, thereby adjusting the height of the platform panel in the direction perpendicular to the ground.

[0014] For example, in one embodiment of the novel automotive sampling system bias test apparatus, the sampler is a screw sampler.

[0015] For example, in one embodiment of the novel automotive sampling system bias test apparatus, the diameter of the sampling barrel is 100 mm larger than the diameter of the screw sampler, and the depth of the sampling barrel is 600-800 mm.

[0016] The novel vehicle sampling machine system bias testing method and apparatus of this application offer the following advantages: The novel vehicle sampling machine system bias testing method uses a mobile testing platform instead of a vehicle to complete the test, offering advantages such as high safety, strong reliability, short construction period, ease of operation, and easy promotion. This application allows the entire testing process to be completed on the ground, eliminating the need to climb onto the vehicle roof for sampling, thus ensuring safety. Furthermore, it eliminates the need to collect reference samples in sampling cylinders equipped with vibrators; instead, a more precise divisor method is used to separate the reference samples, resulting in higher sample representativeness and improved reliability of the test results. In addition, traditional methods require manufacturers to provide or hire vehicles for testing, which can lead to situations where no vehicles are available, making the test impossible. This application's method eliminates the need for such coordination, saving testing costs and time. The testing steps are simple and clear, easy to operate, and provide a reliable basis for completing the test and obtaining more accurate experimental results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the bias test device structure of the novel automotive sampling machine system of this application;

[0019] Figure 2 This is a schematic diagram of the waste sample collector structure of this application.

[0020] Reference numerals: 100-sampler, 200-sampling bucket, 300-sampling platform, 310-platform panel, 311-slot, 320-electric lifting rod, 330-base, 340-push handle, 350-motor, 400-discard sample collector, 410-plate, 420-perforation. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0023] For bias testing of vehicle samplers, GB / T 19494.3-2004, section 5.4.1.2.2, provides a manual drilling method. The method is as follows: When a vehicle fully loaded with material stops beneath the vehicle sampler, the sampler begins mechanical sampling. This involves collecting discarded sample 1 from the top of the screw sampler's reduction section, discarded sample 2 from the crushing and reduction stage of the sampler system, and a retained sample. After collecting discarded sample 1, discarded sample 2, and the retained sample, the mechanical sampling is complete. Then, following the manual drilling method, insert a cylinder with a diameter equal to the sampler opening diameter into a location adjacent to the mechanical sampler where the material is undisturbed. Lower the cylinder to the depth to which the mechanical sampler descends. Remove the sample from the cylinder until all samples are removed; this constitutes the reference sample. The discarded sample 1, discarded sample 2, retained sample, and the manual reference sample constitute a subsample pair. Repeat this process until the required number of subsample pairs are obtained.

[0024] The above method can accurately reflect the bias test results of the vehicle sampler while ensuring proper operation, but it has several challenges:

[0025] (1) The side of a car is about 3m above the ground. The material is filled to be 0.3m to 0.4m higher than the side. There are many visible or invisible bracing inside the car. Walking on the top of a car full of material poses a risk of falling from the top of the car.

[0026] (2) Each car needs to take about 10 pairs of samples when conducting the bias test, that is, 20 coal sample pits will be left on the top of the car body due to the test. At this time, people walking on the car body are at risk of falling into the holes.

[0027] (3) When collecting the discarded sample 1 left at the top of the spiral sampler, a rain tarpaulin should be prepared, with a circular hole cut in the middle that is slightly larger than the diameter of the sampler opening. As the sampling head descends, it should be passed through the circular hole, and two people should hold up the rain tarpaulin to ensure that the discarded sample 1 falls completely into it and is collected. There is a risk that the rain tarpaulin may get caught in the sampler and potentially pull people into it during the descent and passage of the sampling head through the rain tarpaulin.

[0028] When taking reference samples using the manual drilling method, the sampling tube equipped with a vibrator needs to be transported to the top of the vehicle. Completely driving the sampling tube into the material requires considerable physical strength from the testing personnel, and the material cannot be completely removed, making the manual sampling process very time-consuming.

[0029] In view of this, the first aspect of this application provides a novel bias testing method for an automotive sampling system, such as... Figure 1 As shown, it includes the following steps:

[0030] Step 1: Arrange a sampling bucket 200 and a sampling platform 300 directly below the sampler 100, with the sampling bucket 200 located on the sampling platform 300;

[0031] Step 2: Use a divider to divide the material into two portions of the same quality, and the mass of the two portions of the material is consistent with the loading capacity of the sampling bucket 200. One portion of the material is used for sampling by the vehicle sampling machine system as machine sampling, and the other portion of the material is used for manual sample preparation as a reference sample.

[0032] Step 3: Lower the sampler 100 to its lowest point and measure the height of the sampler 100 from the ground. Adjust the height of the sampling platform 300 from the ground to the height required for the vehicle sampler bias test.

[0033] Step 4: Pour one portion of the material from Step 2 into the sampling bucket 200, lower the sampler 100 so that it corresponds to the sampling bucket 200, and when the sampler 100 is lowered to the mouth of the sampling bucket 200, place the waste sample collector 400 between the sampler 100 and the sampling bucket 200.

[0034] Step 5: Continue to lower the sampler 100 into the sampling bucket 200, and the first discarded sample falls onto the discarded sample collector 400 until the sampler 100 is lowered to the bottom of the sampling bucket 200, at which point the first discarded sample completely falls onto the discarded sample collector 400. Then, raise the sampler 100.

[0035] Step Six: Repeat Steps One through Five to complete the collection of the second discarded sample and the retained sample. The first discarded sample, the second discarded sample, and the retained sample are used as machine samples.

[0036] Step 7: Prepare another sample of material from Step 2 manually as a reference sample. The reference sample and the machine-sampled sample are considered as a pair of subsamples.

[0037] Step 8: Repeat steps 6 and 7 until the required number of subsample pairs are obtained.

[0038] The novel vehicle sampling machine system bias test method of this application uses a mobile test platform to replace the vehicle to complete the test, which has the advantages of high safety, high reliability, short construction period, easy operation and easy promotion.

[0039] The second aspect of this application provides a novel bias testing device for an automotive sampling system, such as... Figure 1As shown, the system includes a sampler 100 and a sampling platform 300. The sampling platform 300 is located below the sampler 100. A sampling bin 200 corresponding to the sampler 100 is provided on the sampling platform 300. The sampler 100 can move toward the sampling bin 200 and extend into the sampling bin 200 to perform sampling. The sampling platform 300 has a liftable structure, and its height above the ground can be set according to the different heights the sampler 100 descends toward the sampling bin 200, so that the height of the sampling platform 300 above the ground is consistent with the height of the sampler 100 above the ground.

[0040] For example, in the bias testing apparatus of the novel automotive sampling system provided in one embodiment, such as Figure 1 As shown, it also includes a waste sample collector 400, located between the sampler 100 and the sampling platform 300 to collect waste samples.

[0041] For example, in the bias testing apparatus of the novel automotive sampling system provided in one embodiment, such as Figure 1-2 As shown, the waste sample collector includes a plate 410 with a perforation 420 on it. The perforation 420 is adapted to the sampler 100, and the perforation 420 is adapted to the sampler 100 so that the sampler 100 can pass through the perforation 420 when it moves toward the sampling bucket 200.

[0042] For example, in the bias testing apparatus of the novel automotive sampling system provided in one embodiment, such as Figure 1-2 As shown, when the sampler 100 moves toward the sampling bucket 200 and extends into the sampling bucket 200 to collect samples, the discarded sample falls onto the flat plate 410 around the perforation 420 of the discarded sample collector 400. Specifically, in step five, when the sampler 100 descends, it passes through the perforation 420 into the sampling bucket 200, and the first discarded sample falls onto the flat plate 410 around the perforation 420 of the discarded sample collector 400.

[0043] For example, in one embodiment of the novel automotive sampling system bias testing apparatus, a switch door is provided at the bottom of the sampling barrel 200 so that the bottom of the sampling barrel 200, facing away from the sampler 100, can be opened. In step eight, after all the material in the sampling barrel 200 that was not collected by the sampler 100 is emptied, the switch door at the bottom of the sampling barrel 200 is closed. Steps six and seven are repeated until the required number of subsample pairs are collected.

[0044] For example, in the bias test device of the novel automotive sampling machine system provided in one embodiment, the sampling platform 300 includes a platform panel 310, and a slot 311 is provided on the platform panel 310. The sampling barrel 200 is locked in the slot 311 to limit and fix the sampling barrel 200.

[0045] For example, in one embodiment of the novel automotive sampling machine system bias testing apparatus, the sampling platform 300 further includes a base 330, and an electric lifting rod 320 is provided between the base 330 and the platform panel 310 for supporting the platform panel 310 and adjusting the height of the sampling platform 300. A push handle 340 is provided at one end of the base 330.

[0046] For example, in one embodiment of the novel automotive sampling machine system bias testing device, a motor 350 is provided on the base 330. The output end of the motor 350 is connected to the end of the electric lifting rod 320 away from the platform panel 310 to drive the electric lifting rod 320 to move horizontally, thereby adjusting the height of the platform panel 310 in the direction perpendicular to the ground. In step three, the sampler 100 is lowered to its lowest point, at which point the bottom of the sampler 100 is 1.5–2 m above the ground.

[0047] For example, in one embodiment of the novel automotive sampling system bias test apparatus, the sampler 100 is a screw sampler.

[0048] For example, in one embodiment of the novel automotive sampling system bias test apparatus, the diameter of the sampling barrel 200 is 100 mm larger than the diameter of the screw sampler 100, and the depth of the sampling barrel 200 is 600-800 mm.

[0049] The novel automotive sampling system bias testing method and apparatus disclosed in this application allows the entire testing process to be completed on the ground, eliminating the need to climb onto the roof of the vehicle for sampling, thus ensuring safety. Furthermore, it eliminates the need to collect reference samples from sampling cylinders equipped with vibrators; instead, a more precise binary separator method is used to separate the reference samples, resulting in higher sample representativeness and improved reliability of the test results. In addition, the original method required the manufacturer to provide a vehicle for testing or to hire a vehicle, which could lead to situations where no vehicle was available and the test could not be conducted. This method eliminates the need for such coordination, saving testing costs and time. The testing steps are simple, clear, and easy to operate, providing a reliable basis for completing the test and obtaining more accurate experimental results.

[0050] Although embodiments of this application have been disclosed for illustrative purposes, those skilled in the art will recognize that various modifications, additions, and substitutions can be made without departing from the scope and spirit of the invention as disclosed in the appended claims.

Claims

1. A bias test method for an automotive sampling system, characterized in that, Includes the following steps: Step 1: Place a sampling bucket and a sampling platform directly below the sampler, with the sampling bucket located on the sampling platform; Step 2: Use a divider to divide the material into two portions of the same quality, and the mass of the two portions of the material is consistent with the loading capacity of the sampling bucket. One portion of the material is used for sampling by the vehicle sampling machine system as machine sampling, and the other portion of the material is used for manual sample preparation as a reference sample. Step 3: Lower the sampler to its lowest point and measure the height of the sampler above the ground. Adjust the height of the sampling platform above the ground to the height required for the vehicle sampler bias test. Step 4: Pour one portion of the material from Step 2 into the sampling bucket, lower the sampler so that it corresponds to the sampling bucket, and when the sampler is lowered to the opening of the sampling bucket, place a waste sample collector between the sampler and the sampling bucket; Step 5: Continue to lower the sampler into the sampling bucket. The first discarded sample falls onto the discarded sample collector until the sampler reaches the bottom of the sampling bucket, at which point the first discarded sample falls completely onto the discarded sample collector. Then, raise the sampler. Step Six: Repeat Steps One through Five to complete the collection of the second discarded sample and the retained sample. The first discarded sample, the second discarded sample, and the retained sample are used as machine samples. Step 7: Prepare another sample of material from Step 2 manually as a reference sample. The reference sample and the machine-sampled sample are considered as a pair of subsamples. Step 8: Repeat steps 6 and 7 until the required number of sample pairs are obtained, including: Sampler; A sampling platform is located below the sampler. A sampling bucket corresponding to the sampler is provided on the sampling platform. The sampler can move toward the sampling bucket and extend into the sampling bucket to collect samples. The sampling platform is a liftable structure, and the height of the sampling platform above the ground can be set according to the different heights the sampler descends toward the sampling bucket, so that the height of the sampling platform above the ground is consistent with the height of the sampler above the ground. The waste sample collector includes a plate with perforations on it. The perforations are adapted to the sampler so that the sampler can pass through the perforations when it moves toward the sampling bucket.

2. The bias test method for an automotive sampling machine system according to claim 1, characterized in that, When the sampler moves toward the sampling bucket and extends into the sampling bucket to collect samples, the discarded samples fall onto the flat plate around the perforation of the discarded sample collector.

3. The bias test method for an automotive sampling machine system according to claim 1, characterized in that, A switch door is provided at the bottom of the sampling bucket so that the sampling bucket can be opened away from the bottom of the sampler.

4. The bias test method for an automotive sampling machine system according to claim 1, characterized in that, The sampling platform includes a platform panel with a slot on the platform panel. The sampling bucket is locked in the slot to limit and fix the sampling bucket.

5. The bias test method for an automotive sampling machine system according to claim 4, characterized in that, The sampling platform also includes a base, and an electric lifting rod is provided between the base and the platform panel to support the platform panel and adjust the height of the sampling platform.

6. The bias test method for an automotive sampling machine system according to claim 5, characterized in that, A motor is provided on the base, and the output end of the motor is connected to the end of the electric lifting rod away from the platform panel to drive the electric lifting rod to move horizontally, thereby adjusting the height of the platform panel in the direction perpendicular to the ground.

7. The bias test method for an automotive sampling machine system according to claim 1, characterized in that, The sampler is a screw sampler.

8. The bias test method for an automotive sampling machine system according to claim 7, characterized in that, The diameter of the sampling barrel is 100 mm larger than the diameter of the screw sampler, and the depth of the sampling barrel is 600-800 mm.

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