Feeding control method and device for stirring equipment and storage medium

Abstract

The invention discloses a feeding control method and device for stirring equipment and a storage medium, and belongs to the technical field of intelligent control of asphalt concrete pavement construction machinery. The method comprises the following steps: based on the feeding target quantity pre-input by each cold hopper within single-disc production time, combining the content proportion of each grade of aggregate; the feeding amount of each graded aggregate in the single-disc production time is calculated; calculating the single-tray addition amount of each graded aggregate; inputting the feeding amount of each grade of aggregate and the single-disc addition amount of each grade of aggregate in the single-disc production time into a pre-constructed constraint function, and solving to obtain a minimum feeding target amount which enables the feeding amount of each grade of aggregate to be greater than or equal to the single-disc addition amount of each grade of aggregate; and a cold material frequency converter is adjusted according to the optimal target feeding amount of the cold material hopper. According to the invention, the technical problem that the production efficiency is affected due to the fact that a cold material frequency converter needs to be manually and frequently adjusted in the prior art when gradation aggregates of other specifications are doped in gravel raw materials can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of asphalt concrete pavement construction machinery control, and particularly relates to a mixing equipment feeding control method and device and a storage medium. BACKGROUND

[0002] The asphalt concrete mixing equipment plays an important role in the asphalt pavement construction, and the cold material feeding system is the primary component of the asphalt concrete mixing equipment, determines the stability of the graded aggregate supply, and affects the production efficiency of the whole equipment.

[0003] Generally, one cold material hopper corresponds to one hot material bin, and when the material of a certain hot material bin needs to be adjusted during equipment production, only the frequency of the corresponding cold material hopper frequency converter needs to be adjusted. However, in actual production, due to the actual situation of production equipment, production technology, and the difference in stone grades in various regions, and some human factors and the pursuit of economic interests of the sand and stone raw material suppliers, the supply of sand and stone raw materials is difficult to meet the design requirements, and other specifications of graded aggregates are always mixed in various sand and stone raw materials, and it is difficult to ensure the straight-line supply of cold materials.

[0004] When other specifications of graded aggregates are mixed in the sand and stone raw materials, the operator needs to manually adjust the cold material frequency converter frequently according to the aggregate bin level during production, which may cause overflow of other aggregate bins while meeting the requirements of one aggregate bin. In addition, the operator may not adjust the aggregate bin in time, which may cause the shortage of the aggregate bin. The increase in labor cost cannot ensure the normal production and affects the production efficiency.

[0005] Therefore, there is an urgent need for a mixing equipment feeding control method, device and storage medium to solve the above technical problems. SUMMARY

[0006] The present application aims to overcome the deficiencies in the prior art and provide a mixing equipment feeding control method, device and storage medium, which can solve the technical problems that the prior art needs to manually adjust the cold material frequency converter frequently and cannot ensure the normal production and affects the production efficiency when other specifications of graded aggregates are mixed in the sand and stone raw materials.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] In a first aspect, the present application provides a mixing equipment feeding control method, comprising:

[0009] Obtaining the content ratio of each graded aggregate when the sand and stone raw materials enter the factory;

[0010] According to the pre-input target feeding amount of each cold hopper in the single-disk production time and the content proportion of each graded aggregate, the feeding amount of each graded aggregate in the single-disk production time is calculated.

[0011] According to the pre-obtained single-disk production amount and the preset addition proportion of each graded aggregate, the single-disk addition amount of each graded aggregate is calculated.

[0012] The feeding amount of each graded aggregate in the single-disk production time and the single-disk addition amount of each graded aggregate are input into the pre-constructed constraint function to obtain the minimum feeding target amount that makes the feeding amount of each graded aggregate greater than or equal to the single-disk addition amount of each graded aggregate.

[0013] According to the optimal cold hopper target feeding amount, the cold material frequency converter is adjusted to realize the supply-demand balance of each graded aggregate.

[0014] Further, the content proportion of each graded aggregate when the sand and stone raw materials enter the factory includes:

[0015] The particle size of the sand and stone raw materials entering the factory is screened by the aggregate grading detection device, so that the content proportion of the graded aggregate in different sand and stone raw materials can be determined.

[0016] The number and type of the screen mesh of the aggregate grading detection device are consistent with the vibrating screen of the asphalt station.

[0017] Further, the expression for calculating the feeding amount of each graded aggregate in the single-disk production time based on the pre-input target feeding amount of each cold hopper in the single-disk production time and the content proportion of each graded aggregate includes:

[0018] ,

[0019] wherein, is the feeding amount of the xth graded aggregate, is the target feeding amount of the ith cold hopper, is the number of cold hoppers input into production in the single-disk production time, is the content proportion of the xth graded aggregate in the ith cold hopper.

[0020] Further, the expression for calculating the single-disk addition amount of each graded aggregate according to the pre-obtained single-disk production amount and the preset addition proportion of each graded aggregate includes:

[0021] ,

[0022] wherein, is the single-disk production amount, is the single-disk addition amount of the xth graded aggregate, is the addition proportion of the xth graded aggregate.

[0023] Further, the expression of the constraint function comprises:

[0024] ,

[0025] wherein Y is a target function, is a target loading amount of the i-th cold hopper, is the number of cold hoppers put into production in a single-disk production time, is a loading amount of the x-th graded aggregate, is a single-disk addition amount of the x-th graded aggregate.

[0026] In a second aspect, the present application provides a loading control device for a mixing plant, comprising:

[0027] a screening proportion module configured to obtain content proportions of graded aggregates at the time of entering a sand and stone raw material into a plant;

[0028] a graded aggregate loading amount calculation module configured to calculate loading amounts of graded aggregates in a single-disk production time based on pre-input target loading amounts of cold hoppers in the single-disk production time and in combination with the content proportions of the graded aggregates;

[0029] a graded aggregate addition amount calculation module configured to calculate single-disk addition amounts of graded aggregates according to pre-obtained single-disk production amounts and pre-set graded aggregate addition ratios;

[0030] a solving module configured to input the loading amounts of graded aggregates in the single-disk production time and the single-disk addition amounts of graded aggregates into a pre-constructed constraint function to solve and obtain minimum target loading amounts that make the loading amounts of graded aggregates greater than or equal to the single-disk addition amounts of graded aggregates;

[0031] an adjusting module configured to adjust a cold hopper frequency converter according to the optimal cold hopper target loading amount to achieve a supply-demand balance of graded aggregates.

[0032] In a third aspect, the present application provides an electronic terminal comprising a processor and a memory connected to the processor, and the memory stores a computer program, when the computer program is executed by the processor, the steps of the method according to any one of the above aspects are executed.

[0033] In a fourth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the steps of the method according to any one of the above aspects.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] The application firstly provides a feeding control method of a stirring device, which comprises the following steps: acquiring feeding amounts of graded aggregates at all levels and single-dish adding amounts of the graded aggregates at all levels within a single-dish production time, inputting the feeding amounts and the single-dish adding amounts into a pre-constructed constraint function, and solving minimum feeding target amounts of the graded aggregates at all levels, which are greater than or equal to the single-dish adding amounts of the graded aggregates at all levels.

[0036] The aggregate gradation detection of the sand and stone raw materials entering the factory can effectively avoid the entry of unqualified raw materials, and can effectively ensure the quality of the finished products. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a flow chart of the feeding control method of the stirring device provided in the embodiment of the application. DETAILED DESCRIPTION

[0038] The technical solutions of the application will be described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and the specific features in the embodiments are detailed descriptions of the technical solutions of the application, and not limitations of the technical solutions of the application, and the technical features in the embodiments and the embodiments can be combined with each other without conflict.

[0039] In the application, the term "and / or" is only used to describe the association relationship of the associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases of existence of A alone, existence of A and B, and existence of B alone. In addition, the character " / " in the application generally represents an "or" relationship between the associated objects before and after it.

[0040] Embodiment one:

[0041] Figure 1 is a flow chart of the feeding control method of the stirring device in the embodiment one of the application. The flow chart only shows the logical order of the method described in the embodiment, and the steps shown or described can be completed in an order different from that shown in the embodiment on the premise of not conflicting with each other. Figure 1

[0042] The feeding control method of the stirring device provided in the embodiment can be applied to a terminal, and can be executed by a mechanical equipment fault identification device, which can be realized in the form of software and / or hardware, and can be integrated in the terminal, such as any intelligent mobile phone, tablet computer or computer device with communication function. The method of the embodiment specifically comprises the following steps:

[0043] Step one: acquiring the content proportion of the graded aggregates at all levels when the sand and stone raw materials enter the asphalt station, specifically comprising: ​

[0044] The particle size of the raw material of the incoming sand and stone is screened by the aggregate gradation detection device, so that the content proportion of the graded aggregate in different sand and stone raw materials can be determined;

[0045] The number and type of the screen of the aggregate gradation detection device are consistent with the vibrating screen of the asphalt station.

[0046] In this embodiment, taking the four-level gradation of the asphalt station as an example, there are four different sand and stone raw materials in the stockyard, which are respectively input into four cold hoppers, and after detection, it is determined that:

[0047] The content of the graded aggregate A (i.e. x=A) in the sand and stone raw material input into the cold hopper 1 (i.e. i=1) is A1%, the content of the graded aggregate B (i.e. x=B) is B1%, the content of the graded aggregate C (i.e. x=C) is C1%, and the content of the graded aggregate D (i.e. x=D) is D1%;

[0048] The content of the graded aggregate A (i.e. x=A) in the sand and stone raw material input into the cold hopper 2 (i.e. i=2) is A2%, the content of the graded aggregate B (i.e. x=B) is B2%, the content of the graded aggregate C (i.e. x=C) is C2%, and the content of the graded aggregate D (i.e. x=D) is D2%;

[0049] The content of the graded aggregate A (i.e. x=A) in the sand and stone raw material input into the cold hopper 3 (i.e. i=3) is A3%, the content of the graded aggregate B (i.e. x=B) is B3%, the content of the graded aggregate C (i.e. x=C) is C3%, and the content of the graded aggregate D (i.e. x=D) is D3%;

[0050] The content of the graded aggregate A (i.e. x=A) in the sand and stone raw material input into the cold hopper 4 (i.e. i=4) is A4%, the content of the graded aggregate B (i.e. x=B) is B4%, the content of the graded aggregate C (i.e. x=C) is C4%, and the content of the graded aggregate D (i.e. x=D) is D4%.

[0051] Step two: based on the pre-input feeding target amount of each cold hopper in the single-disk production time, combined with the content proportion of the graded aggregate, the expression of the feeding amount of each graded aggregate in the single-disk production time is calculated.

[0052] ,

[0053] wherein, is the feeding amount of the x graded aggregate, is the target feeding amount of the i number cold hopper, is the number of cold hoppers put into production in the single-disk production time, is the content proportion of the x graded aggregate in the i number cold hopper.

[0054] In the embodiment, the asphalt station single disc production time is Sstir, and in the time period Sstir, the target loading amounts of 1#-4# cold hoppers are set as M1, M2, M3 and M4 respectively, combined with the aggregate detection results of the sand and stone raw materials, then there are:

[0055] The loading amount M of the graded aggregate A A =M1×A1%+M2×A2%+M3×A3%+M4×A4%;

[0056] The loading amount M of the graded aggregate B B =M1×B1%+M2×B2%+M3×B3%+M4×B4%;

[0057] The loading amount M of the graded aggregate C C =M1×C1%+M2×C2%+M3×C3%+M4×C4%;

[0058] The loading amount M of the graded aggregate D D =M1×D1%+M2×D2%+M3×D3%+M4×D4%.

[0059] Step three: according to the pre-acquired single disc production amount and the preset adding ratio of each graded aggregate, the expression of the single disc adding amount of each graded aggregate includes:

[0060] ,

[0061] wherein, is the single disc production amount, is the single disc adding amount of the xth graded aggregate, is the adding ratio of the xth graded aggregate.

[0062] Step four: input the loading amount of each graded aggregate and the single disc adding amount of each graded aggregate into the pre-constructed constraint function in the single disc production time, and solve to acquire the minimum loading target amount that makes the loading amount of each graded aggregate greater than or equal to the single disc adding amount of each graded aggregate;

[0063] The expression of the constraint function includes:

[0064] ,

[0065] wherein, Y is the target function, is the target loading amount of the i th cold hopper, is the number of cold hoppers put into production in the single disc production time, is the loading amount of the xth graded aggregate, is the single disc adding amount of the xth graded aggregate, and in addition, and are both greater than or equal to 0.

[0066] Step five: according to the optimal cold hopper target loading amount, adjust the cold material frequency converter, realize the balance of each level of bone material supply and demand.

[0067] Specifically, taking the four-grade asphalt station as an example, the following is explained:

[0068] (1) The four cold hoppers of the asphalt station respectively transport four kinds of sand and stone raw materials. After detection, the data of the four kinds of sand and stone raw materials are obtained:

[0069] The content of graded aggregate A in the sand and stone raw materials entering the cold hopper 1 is 65%, the content of graded aggregate B is 18%, the content of graded aggregate C is 10%, and the content of graded aggregate D is 7%;

[0070] The content of graded aggregate A in the sand and stone raw materials entering the cold hopper 2 is 11%, the content of graded aggregate B is 79%, the content of graded aggregate C is 7%, and the content of graded aggregate D is 3%;

[0071] The content of graded aggregate A in the sand and stone raw materials entering the cold hopper 3 is 8%, the content of graded aggregate B is 15%, the content of graded aggregate C is 58%, and the content of graded aggregate D is 19%;

[0072] The content of graded aggregate A in the sand and stone raw materials entering the cold hopper 4 is 2%, the content of graded aggregate B is 6%, the content of graded aggregate C is 12%, and the content of graded aggregate D is 80%;

[0073] (2) The single disc production of the asphalt station is set to 4000kg, wherein the addition proportion of graded aggregate A is 20%, the addition proportion of graded aggregate B is 15%, the addition proportion of graded aggregate C is 35%, and the addition proportion of graded aggregate D is 30%.

[0074] That is:

[0075] M=4000, P A =0.20, P B =0.15, P C =0.35, P D =0.30;

[0076] (3) According to the above data, the optimal loading amount M of 1#-4# cold hoppers is obtained 优1 , M 优2 , M 优3 , M 优4 .

[0077] That is:

[0078] M 优1 =935.23, M 优2 =86.66, M 优3 =2050.08, M 优4= 928.02.

[0079] (4) The results obtained are brought into the formula analysis:

[0080] The single-disk addition amount of graded aggregate A:

[0081] = M x P A = 4000 x 0.20 = 800

[0082] The single-disk addition amount of graded aggregate B

[0083] = M x P B = 4000 x 0.15 = 600

[0084] The single-disk addition amount of graded aggregate A

[0085] = M x P C = 4000 x 0.35 = 1400

[0086] The single-disk addition amount of graded aggregate A

[0087] = M x P D = 4000 x 0.30 = 1200

[0088] The total loading amount of graded aggregate A

[0089] M A = M1 x A1% + M2 x A2% + M3 x A3% + M4 x A4%

[0090] = 935.23 x 0.65 + 86.66 x 0.11 + 2050.08 x 0.08 + 928.02 x 0.02

[0091] = 799.9999

[0092] ≈ 800

[0093] The total loading amount of graded aggregate B

[0094] M B = M1 x B1% + M2 x B2% + M3 x B3% + M4 x b4%

[0095] = 935.23 x 0.18 + 86.66 x 0.79 + 2050.08 x 0.15 + 928.02 x 0.06

[0096] = 599.996

[0097] ≈ 600

[0098] Total feeding amount of graded aggregate C

[0099] M C =M1x C1%+M2x C2%+M3x C3%+M4x C4%

[0100] =935.23x 0.10+86.66x 0.07+2050.08x 0.58+928.02x 0.12

[0101] =1399.998

[0102] ≈1400

[0103] Total feeding amount of graded aggregate D

[0104] M D =M1x D1%+M2x D2%+M3x D3%+M4x D4%

[0105] =935.23x 0.07+86.66x 0.03+2050.08x 0.19+928.02x 0.80

[0106] =1199.9971

[0107] ≈1200

[0108] It can be concluded that:

[0109] M A = , M B = , M C = , M D = .

[0110] The optimal feeding amount of the cold hopper obtained by solving can meet the demand of actual production, and greatly reduces the occurrence of overflow.

[0111] Example two:

[0112] The embodiment two of the application provides a feeding control device of a stirring equipment, which comprises:

[0113] A screening proportion module is used for acquiring content proportions of graded aggregates when sand and stone raw materials enter a factory;

[0114] An aggregate feeding amount calculation module is used for calculating feeding amounts of the graded aggregates in a single-disk production time based on feeding target amounts of the cold hoppers pre-input in the single-disk production time and in combination with the content proportions of the graded aggregates;

[0115] The aggregate adding amount calculation module is configured to calculate the single-disk adding amount of the aggregate of each grading according to the pre-acquired single-disk production amount and the pre-set aggregate adding ratio of each grading.

[0116] The solving module is configured to input the feeding amount of the aggregate of each grading and the single-disk adding amount of the aggregate of each grading into the pre-constructed constraint function within the single-disk production time, and solve to obtain the minimum feeding target amount that makes the feeding amount of the aggregate of each grading greater than or equal to the single-disk adding amount of the aggregate of each grading.

[0117] The adjusting module is configured to adjust the cold material frequency converter according to the optimal cold material hopper target feeding amount, so as to realize the supply-demand balance of the aggregate of each grading.

[0118] The stirring equipment feeding control device provided in the second embodiment of the present application can execute the stirring equipment feeding control method provided in the first embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0119] Embodiment three:

[0120] The electronic terminal provided in the third embodiment of the present application can execute the stirring equipment feeding control method provided in the first embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0121] The electronic terminal provided in the third embodiment of the present application can execute the stirring equipment feeding control method provided in the first embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0122] Embodiment four:

[0123] The computer readable storage medium provided in the fourth embodiment of the present application also stores a computer program, and the computer program is executed by a processor to realize the steps of the method provided in the first embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0124] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, device, or computer program product. Therefore, the present application can adopt a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0125] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0126] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0127] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks. Figure 1 one or more flow or blocks.

[0128] The above only is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the technical principles of the present application, can also make a number of improvements and variations, these improvements and variations should also be considered as the protection scope of the present application.

Claims

1. A feeding control method for a mixing device, characterized in that, include: Obtain the content ratio of each grade of aggregate when the sand and gravel raw materials enter the plant; Based on the pre-input target amount of each cold hopper during the single-pan production time, and combined with the content ratio of each grade of aggregate, the amount of each grade of aggregate is calculated during the single-pan production time. The amount of aggregate added per batch for each grade is calculated based on the pre-acquired single-batch production volume and the pre-set aggregate addition ratio for each grade. Input the feeding amount of each grade of aggregate and the single-disc addition amount of each grade of aggregate during the single-disc production time into the pre-constructed constraint function, and solve to obtain the minimum feeding target amount that makes the feeding amount of each grade of aggregate greater than or equal to the single-disc addition amount of each grade of aggregate. Based on the target feed rate of the optimal cold hopper, the cold material frequency converter is adjusted to achieve a balance between supply and demand of aggregates at each stage.

2. The feeding control method for the mixing equipment according to claim 1, characterized in that, The content ratio of each grade of aggregate when the sand and gravel raw materials enter the plant includes: By using an aggregate gradation testing device to screen the particle size of incoming sand and gravel raw materials, the content ratio of graded aggregates in different sand and gravel raw materials can be determined. The number and model of the sieves in the aggregate gradation testing device are consistent with those of the vibrating sieve at the asphalt plant.

3. The feeding control method for the mixing equipment according to claim 1, characterized in that, Based on the pre-input target feeding amount of each cold hopper during a single-pan production time, and combined with the content ratio of each grade of aggregate, the expression for calculating the feeding amount of each grade of aggregate during a single-pan production time includes: ， in, The feed rate of grade x aggregate. The target feed rate for cold hopper number i. This refers to the number of cold material hoppers used in production during a single production cycle. The content ratio of x-graded aggregate in cold hopper i.

4. The feeding control method for the mixing equipment according to claim 1, characterized in that, The expressions for calculating the single-disc addition amount of aggregates for each grade based on the pre-acquired single-disc production volume and the pre-set addition ratio of each grade of aggregates include: ， in, This refers to the production volume per tray. The amount of aggregate added per batch for grade x. The proportion of aggregate with grade x.

5. The feeding control method for the mixing equipment according to claim 1, characterized in that, The expression for the constraint function includes: ， Where Y is the objective function, The target feed rate for cold hopper number i. This refers to the number of cold material hoppers used in production during a single production cycle. The feed rate of grade x aggregate. This refers to the amount of aggregate added per disc for grade x.

6. A feeding control device for a mixing equipment, characterized in that, include: The screening ratio module is used to obtain the content ratio of each grade of aggregate when the sand and gravel raw materials enter the plant; The aggregate feeding quantity calculation module is used to calculate the feeding quantity of each grade of aggregate within a single production time based on the pre-input feeding target quantity of each cold hopper during the single production time, combined with the content ratio of each grade of aggregate. The aggregate addition calculation module is used to calculate the single-disc addition amount of aggregates of each grade based on the pre-acquired single-disc production amount and the pre-set aggregate addition ratio of each grade. The solution module is used to input the feeding amount of each grade of aggregate and the single-disc addition amount of each grade of aggregate during the single-disc production time into a pre-constructed constraint function, and solve to obtain the minimum feeding target amount that makes the feeding amount of each grade of aggregate greater than or equal to the single-disc addition amount of each grade of aggregate. The adjustment module is used to adjust the cold material frequency converter according to the target feeding amount of the optimal cold material hopper, so as to achieve a balance between supply and demand of aggregates at each stage.

7. An electronic terminal, characterized in that, It includes a processor and a memory connected to the processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, it performs the steps of the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the computer program implements the steps of the method according to any one of claims 1 to 5.

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