Sampling and point distribution method for automotive material carriage

Abstract

The invention discloses a sampling and point distributing method for an automotive material carriage, belongs to the technical field of material sampling, and solves the technical problem that a sample obtained by an existing sampling method is low in representativeness. The method comprises the following steps of: 1, setting nine sampling points, and respectively forming a Z-shaped nine-point sampling pattern, an X-shaped nine-point sampling pattern and a Chinese character'tian '-shaped nine-point sampling pattern; step 2, randomly selecting one of the three patterns as a sampling scheme; 3, nine sampling points of the sampling scheme are distributed in the whole compartment, and three bottom-seeing deep points are taken; step 4, sampling at a sampling point by a sampling person; step 5, a supervisor compares nine sampling points of the sampling traces of the carriage to confirm the execution condition of the sampling scheme; step 6, if not, uniformly mixing the sampled materials and backfilling to each sampling point, and executing the step 2; taking the sampled material as a sample after passing, and ending the sampling. The existence of a manual operability space is effectively avoided, and the sampling process control and sample representativeness are improved.

Description

Technical Field

[0001] The invention relates to the technical field of material sampling, and more specifically, to a method for distributing sampling points in a vehicle carriage for transporting materials. Background Art

[0002] The procurement costs of raw materials, fuel and auxiliary materials account for more than 70% of the total production costs of steel enterprises, and the quality of materials directly affects the production process. Therefore, ensuring the quality of raw materials, fuel and auxiliary materials entering the factory is the key to ensuring the smooth production of steel enterprises.

[0003] During the process of automobile shipment and loading, some suppliers may adopt partitioning, layering and mixed loading methods to mix poor quality or non-purchased materials for illegal profit.

[0004] The existing carriage sampling only has requirements for the number of sampling points, sub-sample volume and total sample volume. The sampling points are randomly arranged by the sampling workers. There may be collusion between insiders and outsiders, and sampling in problem areas may be deliberately avoided. There are large management loopholes and room for manipulation, resulting in poor representativeness of the samples. Summary of the invention

[0005] The technical problem to be solved by the present invention is aimed at the above-mentioned deficiencies in the prior art. The purpose of the present invention is to provide a method for distributing sampling points in a motor vehicle carriage for transporting materials, which can eliminate the existence of space for human operation, effectively combat the behavior of unscrupulous suppliers who use zoning, stratification and mixed loading to mix poor quality or non-purchased materials for illegal profiteering, improve the representativeness of the samples and restore the authenticity of the materials at the same time.

[0006] The technical solution of the present invention is: a method for sampling points in a truck transport material compartment, comprising the following steps:

[0007] Step 1. Set 9 sampling points, and form a Z-shaped nine-point sampling pattern, an X-shaped nine-point sampling pattern, and a field-shaped nine-point sampling pattern according to the 9 sampling points;

[0008] Step 2. Randomly select one of the Z-shaped nine-point sampling pattern, X-shaped nine-point sampling pattern, and field-shaped nine-point sampling pattern as a sampling scheme;

[0009] Step 3. Distribute the 9 sampling points of the sampling plan throughout the carriage, and select 3 bottom-reaching deep points among the 9 sampling points;

[0010] Step 4. The sampling personnel conduct actual sampling in the carriage according to the 9 sampling points in step 3;

[0011] Step 5. Supervisors can compare the sampling traces in the carriage with the 9 sampling points in step 3 to confirm the implementation of the sampling plan;

[0012] Step 6. If the supervisor confirms that it has not passed, the sampled materials will be mixed evenly and backfilled into each sampling point, and step 2 will be executed; if the supervisor confirms that it has passed, the sampled materials will be used as test specimens, and sampling is completed.

[0013] As a further improvement, the three bottoming deep points are not adjacent to each other.

[0014] Furthermore, in the Z-shaped nine-point sampling pattern, the three bottom deep points are the three middle vertical sampling points.

[0015] Furthermore, in the X-shaped nine-point sampling pattern, the three bottom deep points are three diagonal sampling points.

[0016] Furthermore, in the field-shaped nine-point sampling pattern, the three bottom-seeing deep points are three diagonal sampling points.

[0017] Furthermore, in step three, three bottom depth points are randomly selected from the nine sampling points, and the three bottom depth points are not adjacent to each other.

[0018] Furthermore, the sampling personnel and supervisory personnel are all randomly selected.

[0019] Furthermore, when there are multiple carriages in the same batch, each carriage performs the operations of step 2 to step 6.

[0020] Furthermore, the Z-shaped nine-point sampling pattern, the X-shaped nine-point sampling pattern, and the field-shaped nine-point sampling pattern are stored in a lottery system, and a sampling scheme is randomly selected through the lottery system.

[0021] Furthermore, the operation process of step 2 to step 6 is recorded through video or photos as traceability evidence.

[0022] Beneficial Effects

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

[0024] The present invention forms a Z-shaped nine-point sampling pattern, an X-shaped nine-point sampling pattern, and a field-shaped nine-point sampling pattern according to 9 sampling points, and randomly draws a pattern sampling plan for point sampling, thereby eliminating the existence of human operation space, and effectively combating the illegal suppliers who use zoning, stratification and mixed loading methods to mix poor quality or non-purchased materials for illegal profiteering, thereby improving the representativeness of the samples and restoring the authenticity of the materials, strengthening the quality control of incoming materials, and avoiding the loss of the company's procurement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a flow chart of the present invention;

[0026] Figure 2 is a zigzag nine - point sampling pattern;

[0027] Figure 3 is an X - shaped nine - point sampling pattern;

[0028] Figure 4 is a grid - shaped nine - point sampling pattern.

[0029] Wherein: 1 - sampling point, 2 - zigzag nine - point sampling pattern, 3 - X - shaped nine - point sampling pattern, 4 - grid - shaped nine - point sampling pattern, 5 - bottom - reaching depth point. Specific implementation mode

[0030] The following further describes the present invention with specific embodiments in the accompanying drawings.

[0031] Refer to Figure 1 to Figure 4 , a method for sampling point layout in a truck - transported material carriage, comprising the following steps:

[0032] Step 1. Set 9 sampling points 1, and respectively form a zigzag nine - point sampling pattern 2, an X - shaped nine - point sampling pattern 3, and a grid - shaped nine - point sampling pattern 4 according to the 9 sampling points;

[0033] Step 2. Randomly select one of the zigzag nine - point sampling pattern 2, the X - shaped nine - point sampling pattern 3, and the grid - shaped nine - point sampling pattern 4 as the sampling scheme;

[0034] Step 3. Distribute the 9 sampling points 1 of the sampling scheme throughout the carriage, and select 3 bottom - reaching depth points 5 from the 9 sampling points 1. The bottom - reaching depth point 5 indicates that sampling needs to reach the bottom of the carriage; preferably, the 3 bottom - reaching depth points 5 are not adjacent to each other;

[0035] Step 4. Sampling personnel perform actual point layout and sampling in the carriage according to the 9 sampling points 1 in Step 3;

[0036] Step 5. The supervisor can compare the sampling traces in the carriage with the 9 sampling points 1 in Step 3 to confirm the implementation of the sampling scheme;

[0037] Step 6. If the supervisor confirms non - passing, then mix the sampled materials evenly and backfill them to each sampling point 1, and execute Step 2; if the supervisor confirms passing, then use the sampled materials as samples, and the sampling ends.

[0038] This method eliminates the existence of human operation space, effectively combats the illegal behavior of illegal suppliers using zoning, layering, and mixed loading methods to adulterate materials of poor quality or non - purchased materials for illegal profit, improves the representativeness of the sample while restoring the authenticity of the materials, strengthens the quality control of incoming materials, and avoids the loss of the company's procurement costs.

[0039] In one embodiment, in the zigzag nine-point sampling pattern 2 , the three bottoming deep points 5 are the three middle vertical sampling points 1 .

[0040] In one embodiment, in the X-shaped nine-point sampling pattern 3 , the three bottoming deep points 5 are the three diagonal sampling points 1 .

[0041] In one embodiment, in the field-shaped nine-point sampling pattern 4 , the three bottom-seeing deep points 5 are the three diagonal sampling points 1 .

[0042] In one embodiment, in step three, three bottom depth points 5 are randomly selected from the nine sampling points 1, and the three bottom depth points 5 are not adjacent to each other.

[0043] As a further improvement, sampling personnel and supervisors are randomly selected, further eliminating the room for human manipulation.

[0044] When there are multiple carriages in the same batch, each carriage performs steps 2 to 6.

[0045] Of course, the Z-shaped nine-point sampling pattern 2, the X-shaped nine-point sampling pattern 3, and the field-shaped nine-point sampling pattern 4 can be stored in the lottery system, and a sampling scheme can be randomly drawn through the lottery system, which can also further eliminate the room for human manipulation.

[0046] You can also record the operation process of steps 2 to 6 through video or photos as traceability evidence, which is also to further eliminate the room for human operation.

[0047] The above are only preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A method for sampling points in a truck carriage, characterized in that: The following steps are involved: Step 1. Set 9 sampling points (1), and form a Z-shaped nine-point sampling pattern (2), an X-shaped nine-point sampling pattern (3), and a field-shaped nine-point sampling pattern (4) according to the 9 sampling points; Step 2. Randomly select one of the Z-shaped nine-point sampling pattern (2), the X-shaped nine-point sampling pattern (3), and the field-shaped nine-point sampling pattern (4) as a sampling scheme; Step 3. Distribute the 9 sampling points (1) of the sampling scheme throughout the carriage, and select 3 bottom-reaching deep points (5) from the 9 sampling points (1); Step 4. The sampling personnel conduct actual sampling in the carriage according to the 9 sampling points (1) in step 3; Step 5. The supervisor can compare the sampling traces in the carriage with the 9 sampling points (1) in step 3 to confirm the implementation of the sampling plan; Step 6. If the supervisor confirms that it has not passed, the sampled materials are mixed evenly and backfilled into each sampling point (1), and step 2 is executed; if the supervisor confirms that it has passed, the sampled materials are used as test samples, and sampling is completed.

2. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: The three bottoming deep points (5) are not adjacent to each other.

3. A method for sampling points in a truck carriage for transporting materials according to claim 2, characterized in that: In the Z-shaped nine-point sampling pattern (2), the three bottom-seeing deep points (5) are the three middle vertical sampling points (1).

4. A method for sampling points in a truck carriage for transporting materials according to claim 2, characterized in that: In the X-shaped nine-point sampling pattern (3), the three bottom-seeing deep points (5) are three diagonal sampling points (1).

5. A method for sampling points in a truck carriage for transporting materials according to claim 2, characterized in that: In the field-shaped nine-point sampling pattern (4), the three bottom-seeing deep points (5) are three diagonal sampling points (1).

6. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: In step three, three bottom depth points (5) are randomly selected from the nine sampling points (1), and the three bottom depth points (5) are not adjacent to each other.

7. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: The sampling personnel and supervisory personnel are randomly selected.

8. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: When there are multiple carriages in the same batch, each carriage performs steps 2 to 6.

9. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: The Z-shaped nine-point sampling pattern (2), the X-shaped nine-point sampling pattern (3), and the field-shaped nine-point sampling pattern (4) are stored in a lottery system, and a sampling scheme is randomly selected through the lottery system.

10. A method for sampling points in a truck carriage for transporting materials according to claim 1, characterized in that: Record the operation process of steps 2 to 6 through video or photos as traceability evidence.

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