A hook - unhooking and positioning method for a static scale of a car dumper

Abstract

The invention discloses a hook-unhooking positioning method for a dumper static scale, which includes: setting a limit switch within the walking range of the car puller of the dumper; collecting the distance data between the wagon and the static scale and setting the hook-unhooking position; calculating the hook-unhooking distance through the dumper PLC program and the encoder. The hook-unhooking positioning method for the dumper static scale provided by the invention performs automatic operations to avoid manual operation errors. Calculate the general hook-unhooking interval, which is applicable to various wagons. Through the encoder gear drive, the corresponding distance is positioned and confirmed, so that the hook can be unhooked on time, avoiding the weighing and efficiency problems caused by premature or late hook-unhooking, and the positioning judgment is carried out according to the gear drive distance, avoiding the data jump caused by the interference or failure of the encoder, which may lead to inaccurate positioning. The invention achieves better effects in terms of execution cost, load balance and completion time.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle machine hook unhooking positioning, and in particular to a static balance hook unhooking positioning method for a tipping machine. Background Art

[0002] The static scales in front of the #2 and #3 car dumpers at Laiwu Power Plant showed that the weight of the train cars was significantly lighter after being weighed, resulting in abnormal weighing data and affecting the data statistics of coal intake.

[0003] The main reason is that the existing technology is used. When the car body is towed, it does not fall completely on the scale of the static scale or the static time after being weighed is too short, which makes it impossible for the static scale to measure the data in time (the static scale has a large measurement error when the car body is moving), resulting in significantly low data. There are the following problems:

[0004] Operational problems: The high slip rate of Laiwu Power Plant may be related to the operation of the operating personnel, especially during manual towing and manual unhooking. If the unhooking is not complete and the vehicle is moved forward or the towing hook pin is not completely separated, the measurement data will be inaccurate.

[0005] The problem of car body positioning. At present, the phenomenon of car slipping is common in power plants. The most likely reason for the higher car slipping rate in Laiwu Power Plant than other plants is that the manufacturer was not very accurate in positioning the car body when designing the traction program of the tipping machine. After actual on-site inspection, it was found that the sizes of the car bodies were not the same, which caused the traction car body to be inaccurately positioned after the different car bodies were connected. There are currently three specifications of car bodies, C64K, C70, and C70H. The length of the car body ranges from 13 meters to 14 meters, which makes it difficult to position the car body. Under different car body lengths, the short car body will have subsequent car bodies follow up and press on the scale body, and the long car body will cause the wheels to not fall completely on the scale body, resulting in light weighing. The static scale length is not enough. The number of slippings that occur when the No. 1 scale is 14 meters long is not much, and the No. 2 and No. 3 scales are 13 meters long, leaving insufficient margin for the car body, resulting in a decrease in positioning accuracy.

[0006] The hook removal time needs to be determined in combination with the relevant parameters of the static scale. If the hook removal time is too short, it will affect the weighing, and if it is too long, it will affect the loading and unloading efficiency.

[0007] Encoder problem. At present, our factory's measurement method is to use two positioning switches installed in front of the static scale track and combine the encoder pulse number of the car shifter to comprehensively determine the wheel position and the manual unhooking position. If the encoder is interfered or fails, the data will jump, resulting in inaccurate positioning.

[0008] Therefore, there is an urgent need for a static scale unhooking positioning method for a tipping machine, which can automatically unhook and is applicable to a variety of car bodies, and can determine whether the car body matches the static scale and grasp the accurate unhooking time. Summary of the Invention

[0009] The purpose of this section is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of the specification of this application, to avoid obscuring the purpose of this section, the abstract, and the title. However, such simplifications or omissions shall not be used to limit the scope of the present invention.

[0010] In view of the above problems, the present invention is proposed.

[0011] Therefore, the technical problems solved by the present invention are: the existing hook - unhooking method of the dumper has insufficient accuracy, cannot adapt to various types of wagons, the wagons do not match the static scale, and the optimization problem of how to automate the task.

[0012] To solve the above - mentioned technical problems, the present invention provides the following technical solution: A hook - unhooking and positioning method for a dumper static scale, comprising:

[0013] Setting limit switches within the traveling range of the car - pulling machine of the dumper;

[0014] Collecting the distance data between the wagon and the static scale and setting the hook - unhooking position;

[0015] The PLC program and encoder of the dumper measure the hook - unhooking distance.

[0016] As a preferred embodiment of the hook - unhooking and positioning method for a dumper static scale of the present invention, wherein: the limit switches include, in sequence, car - receiving limit, parking and boom - lowering position, deceleration position, hook - unhooking position, boom - lowering position, dumper entrance, in - dumper fixed position, dumper exit, boom - raising position, car - pulling positioning, and car - pulling limit.

[0017] As a preferred embodiment of the hook - unhooking and positioning method for a dumper static scale of the present invention, wherein: after setting the limit switches for the car - pulling machine, the car - pulling machine uses both an encoder and a positioning switch for dual positioning.

[0018] As a preferred embodiment of the hook - unhooking and positioning method for a dumper static scale of the present invention, wherein: the collection of the distance data between the wagon and the static scale includes collecting the wheel spacing of adjacent wagons, the distance from the front wheels to the scale, the distance from the rear wheels to the scale, and the length of the wagon.

[0019] As a preferred embodiment of the hook - unhooking and positioning method for a dumper static scale of the present invention, wherein: for setting the hook - unhooking position, after setting the positioning switch, the positions of the front and rear wheels of the wagon are all placed on the scale body, and the distances from the front and rear wheels to the edge of the scale body are greater than 20 cm. After determining that the vehicle is above the scale body, when one wheel of the wagon passes the positioning switch, the positioning starts to measure the distance. When the wagon is in the middle of the scale body, the hook - unhooking position is set, and the distance of the hook - unhooking position from the positioning switch is between 28014 mm and 28574 mm;

[0020] If the distances between the front and rear wheels and the edge of the weighing body are less than or equal to 20 cm, it is considered that the weighing body cannot accommodate the car body. It is necessary to measure the closest wheel distance between the adjacent car body and the car body to be measured. If the distance is greater than the distances between the front and rear wheels of the car body to be measured and the edge of the weighing body, it is considered that accurate weighing can be carried out. If the distance is less than the distances between the front and rear wheels of the car body to be measured and the edge of the weighing body, it is considered that the front and rear car bodies press the scale.

[0021] After determining that the weighing body can accurately weigh, unhook in the unhooking area. When there is a taut coupler or overlapping couplers between adjacent car bodies, resulting in the unhooking position not being in the unhooking area, set up a temporary unhooking area for unhooking. After unhooking, calculate the weight difference, expressed as:

[0022] ΔW = W × [S × (L diff / (L adj -L)) + α × g p (L diff ,L adj ) + β × h f (L diff ,L adj )]

[0023] Among them, W represents the predicted weight value, S represents the error coefficient, L diff represents the distance between the temporarily adjusted unhooking position and the standard unhooking position, L adj represents the range of the temporarily adjusted unhooking area, L represents the standard range of the unhooking position, α and β respectively represent the weight coefficients of the position distribution of the vehicle on the weighing body and the mechanical influence parameter weight of the couplers of adjacent car bodies during unhooking, g p (L diff ,L adj ) and h f (L diff ,L adj ) respectively represent the car body position distribution and the mechanical influence function during unhooking;

[0024] If the unhooking position is not in the unhooking area due to reasons other than taut couplers or overlapping couplers, it is judged as a positioning fault, including vehicle positioning fault, encoder fault, photoelectric switch fault, and car pusher fault. Send a fault warning to the operation and maintenance platform. After the repair is completed, reposition the vehicle and determine again whether the unhooking position is within the preset unhooking area.

[0025] As a preferred embodiment of the uncoupling positioning method for the tippler static scale of the present invention, wherein: the setting of the uncoupling position further includes: presetting the car receiving limit, the parking and arm - lowering position, the arm - lowering position, the tippler entrance, the inside of the tippler, the tippler exit, the arm - raising position, the car - transferring positioning, the car - pulling limit positioning with the car - transferring positioning as the initial position, setting a deceleration position switch at 16300 mm, and setting an uncoupling position switch at 14730 mm. If a temporary uncoupling area has been set, the position of the temporary uncoupling position switch is calculated according to the difference between the mean value of the standard uncoupling interval and the standard uncoupling position switch.

[0026] As a preferred embodiment of the uncoupling positioning method for the tippler static scale of the present invention, wherein: the measurement of the distance by the frequency conversion frequency and the encoder pulses includes that the incremental encoder outputs 1000 pulses per revolution, and the single - pulse is 1.03 mm. The running distance of the car - pulling machine is judged according to the number of teeth of the encoder gear, and one revolution of the encoder is 1030 mm.

[0027] As a preferred embodiment of the uncoupling positioning method for the tippler static scale of the present invention, wherein: the measurement of the uncoupling distance by the tippler PLC program and the encoder includes that when the car - pulling machine runs to the limit switch, the switch sends a signal. If the encoder value is not within the preset range, the PLC sends a warning to the operation and maintenance platform to inform the fault, and tries to toggle the front - end switch again. If the front - end switch can be closed, it is regarded as an encoder fault, and an encoder fault warning is further sent and the tippler is rotated to a balanced state, and the operation is paused;

[0028] If the front - end switch cannot be closed, a switch fault warning is further sent, and an attempt is made to reset the tippler. If the reset is successful, the operation of the car - pulling machine is paused and the position is in a balanced state. If the reset fails, manual control is performed to complete the uncoupling.

[0029] If the encoder value is within the preset range, it runs normally. After completing the uncoupling of the tippler, it drives into the next wagon again.

[0030] As a preferred embodiment of the uncoupling positioning method for the tippler static scale of the present invention, wherein: a computer device includes a memory and a processor, the memory stores a computer program, and is characterized in that when the processor executes the computer program, a method for uncoupling positioning of a tippler static scale is implemented.

[0031] As a preferred embodiment of the uncoupling positioning method for the tippler static scale of the present invention, wherein: a computer - readable storage medium stores a computer program thereon, and is characterized in that when the computer program is executed by a processor, a method for uncoupling positioning of a tippler static scale is implemented.

[0032] Advantages of the present invention: The hook uncoupling and positioning method for the dumper static scale provided by the present invention performs automatic operations, avoiding manual operation errors. The general hook uncoupling interval is calculated, which is applicable to various types of freight cars. Through the encoder gear drive, the corresponding distance is confirmed for positioning, enabling timely hook uncoupling, avoiding weighing and efficiency problems caused by premature or late hook uncoupling, and judging the position according to the gear drive distance, avoiding data jumps caused by encoder interference or failure, which may lead to inaccurate positioning. The present invention achieves better results in terms of execution cost, load balance, and completion time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0034] Figure 1 It is the overall flowchart of a hook uncoupling and positioning method for a dumper static scale provided by an embodiment of the present invention.

[0035] Figure 2 It is the car body positioning effect diagram of freight cars with models C64K + C64K, C70 + C70, C64K + C70, and C70 + C64K respectively for a hook uncoupling and positioning method for a dumper static scale provided by the first embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present invention. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that mutually excludes other embodiments.

[0039] The present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0040] At the same time, in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper, lower, inner, and outer" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first, second, or third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] Unless otherwise clearly defined and limited in the present invention, the terms "installed, connected, and coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection, an electrical connection, or a direct connection, and can also be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] Embodiment 1

[0043] Referring to Figure 1 , an embodiment of the present invention provides a method for uncoupling and positioning a static scale of a dumper, including:

[0044] S1: Set limit switches within the walking range of the car puller of the dumper.

[0045] Furthermore, the limit switches include: the car receiving limit, the parking and arm lowering position, the deceleration position, the uncoupling position, the arm lowering position, the dumper entrance, the dumper internal setting, the dumper exit, the arm lifting position, the car pulling and positioning, and the car pulling limit, which are arranged in sequence.

[0046] It should be noted that after the limit switches are set for the car puller, the car puller uses double positioning of an encoder and a positioning switch. This can avoid the problem of positioning errors caused by interference to the encoder. When the encoder makes an error, according to the position of the positioning switch, the mispositioned operation of the encoder can be immediately detected, ensuring the normal operation of the subsequent process.

[0047] S2: Collect the distance data between the car body and the static scale and set the uncoupling position.

[0048] Furthermore, the data collected for the distance between the wagon and the static scale includes: the wheelbase between adjacent wagons, the front-wheel distance from the scale, the rear-wheel distance from the scale, and the length of the wagon. In this embodiment, taking the No. 2 static scale of the power station as an example, the static scale and wagon data table is shown in Table 1.

[0049] Table 1 Static scale and wagon data table

[0050]

[0051] It should be noted that setting the uncoupling position includes: after setting the positioning switch, the positions of the front and rear wheels of the wagon are all placed on the scale body, and the distances between the front and rear wheels and the edge of the scale body are greater than 20 cm. After determining that the vehicle is above the scale body, after one wheel of the wagon passes the positioning switch, the positioning starts to measure the distance. When the wagon is in the middle of the scale body, set the uncoupling position, and the distance of the uncoupling position from the positioning switch is between 28014 mm and 28574 mm. The distances between the front and rear wheels and the edge of the scale body being greater than 20 cm can prevent inaccurate weighing caused by the front and rear wagons pressing on the scale.

[0052] If the distances between the front and rear wheels and the edge of the scale body are less than or equal to 20 cm, it is considered that the scale body cannot accommodate the wagon, and it is necessary to measure the closest wheelbase between the adjacent wagon and the wagon to be measured. If the distance is greater than the distances between the front and rear wheels of the wagon to be measured and the edge of the scale body, it is considered that accurate weighing can be performed. If the distance is less than the distances between the front and rear wheels of the wagon to be measured and the edge of the scale body, it is considered that the front and rear wagons are pressing on the scale.

[0053] After determining that the scale body can accurately weigh, uncouple in the uncoupling interval. When there is a taut or overlapping coupler between adjacent wagons, resulting in the uncoupling position not being in the uncoupling interval, set a temporary uncoupling area to perform uncoupling. After uncoupling, calculate the weight difference, expressed as:

[0054] ΔW = W × [S × (L diff / (L adj -L)) + α × g p (L diff ,L adj ) + β × h f (L diff ,L adj )]

[0055] Among them, W represents the predicted weight value, S represents the error coefficient, L diff represents the distance between the temporarily adjusted uncoupling position and the standard uncoupling position, L adj represents the range of the temporarily adjusted uncoupling interval, L represents the standard interval range of the uncoupling position, α and β respectively represent the weight parameters of the vehicle position distribution on the scale body and the weight parameters of the mechanical influence of the couplers of adjacent wagons during uncoupling, g p (L diff ,L adj ) and hf (L diff ,L adj ) represent the distribution of the car body position and the mechanical influence function during the uncoupling process respectively.

[0056] If the uncoupling position is not in the uncoupling interval due to reasons other than the straightening of the coupler or the coincidence of the couplers, it is judged as a positioning fault, including vehicle positioning fault, encoder fault, photoelectric switch fault, and car puller fault. A fault warning is sent to the operation and maintenance platform. After the repair is completed, the vehicle is repositioned, and it is determined again whether the uncoupling position is within the preset uncoupling interval.

[0057] Further, as Figure 2 shown in the car body positioning effect diagram, there are four cases of car body positioning. These four cases may all occur in the arrangement of freight cars. Therefore, the uncoupling is carried out in the ideal state with the distance between the front and rear wheels and the edge of the weighing body being greater than 20 cm, and the uncoupling position is not fixed. It is assumed that the distance measurement and counting start when the first wheel of the car body passes the positioning 1 switch, and the car body is in the middle of the weighing body. The uncoupling positions in the four cases are measured as shown in Table 2, the uncoupling measurement table. After the uncoupling is completed, the distance between the front wheel and the weighing balance and the distance between the rear wheel and the weighing balance can be maintained greater than 20 cm between 28014 mm and 28574 mm. Therefore, the distance within this interval is used as the uncoupling position for uncoupling, which can ensure that the distance between the front wheel and the weighing balance and the distance between the rear wheel and the weighing balance do not exceed 20 cm, and ensure that the wheel distance between the car body to be measured and the adjacent car body is large enough, so that the measurement data will not be smaller than the actual data due to the influence of the adjacent vehicle during weighing.

[0058] Uncoupling within this interval can not only ensure the accuracy of weighing, but also enable automatic cycling, so that the distance between the front wheel and the weighing balance and the distance between the rear wheel and the weighing balance for the next weighing are still greater than 20 cm. Therefore, the accuracy of the next weighing can still be ensured, realizing automation.

[0059] Table 2 Uncoupling Measurement Table

[0060]

[0061]

[0062] It should be noted that taking the car transfer positioning as the initial position, the receiving car limit, the parking and lowering arm position, the lowering arm position, the dumper entrance, the inside of the dumper, the dumper exit, the raising arm position, the car transfer positioning, and the car pulling limit positioning are preset. A deceleration position switch is set at 16300 mm, and an uncoupling position switch is set at 14730 mm. If a temporary uncoupling area has been set, the position of the temporary uncoupling position switch is calculated according to the difference between the mean value of the standard uncoupling interval and the standard uncoupling position switch.

[0063] It should also be noted that the deceleration position switch and the unhooking position switch are set in combination with the unhooking section, which is calculated based on the average value of 28,215 mm in the unhooking section, the required unhooking time, the running speed of the car puller, and the encoder. After setting the temporary unhooking area, the positioning of the unhooking position switch can be determined by subtracting 13,485 mm from the midpoint of the temporary unhooking area.

[0064] S3: The dumper PLC program and the encoder measure the unhooking distance.

[0065] Furthermore, the distance measured by the frequency conversion frequency and the encoder pulses includes: the incremental encoder outputs 1000 pulses per revolution, and the single pulse is 1.03 mm. According to the number of teeth of the encoder gear, it is judged that the encoder rotates one circle for 1030 mm to determine the running distance of the car puller.

[0066] It should be noted that the dumper PLC program and the encoder measure the unhooking distance, including: when the car puller runs to the limit switch, the switch sends a signal. If the encoder value is not within the preset range, the PLC sends a warning to the operation and maintenance platform to inform the fault, and tries to toggle the front switch again. If the front switch can be closed, it is regarded as an encoder fault, and an encoder fault warning is further sent and the dumper is rotated to a balanced state and the operation is paused;

[0067] If the front switch cannot be closed, a switch fault warning is further sent, and an attempt is made to reset the dumper. If the reset is successful, the operation of the car puller is paused and the position is in a balanced state. If the reset fails, manual control is performed to complete the unhooking.

[0068] If the encoder value is within the preset range, it runs normally. After the dumper unhooking is completed, it drives into the next wagon again.

[0069] Embodiment 2

[0070] An embodiment of the present invention provides a method for positioning the unhooking of a dumper static scale. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0071] Taking the #2 dumper of Laiwu Power Plant as the experimental object, the experimental time is two months. Record the data such as the unhooking success rate, the car slipping rate, the weighing accuracy, the average operation time, the number of encoder faults, the number of track sinkings, and the number of operation errors of our invention and the traditional technical solutions every day.

[0072] During the experiment, the encoder, the track and the operators are strictly supervised to ensure the accuracy of the data.

[0073] As shown in Table 3, the hook-removing interval adopted in our invention greatly improves the hook-removing success rate, reduces the vehicle rolling rate, and can reduce the wrong operations caused by manual participation, greatly reducing the frequency of wrong operations. Since the distances between the front wheels and the rear wheels and the edge of the weighing body can be kept greater than 20 cm, the weighing accuracy is also greatly improved, and the higher automation reduces the average operation time. By adopting the double-positioning method, the positioning switch ensures that the preset data of the encoder is correct, reducing the frequency of faults caused by the encoder inputting wrong data.

[0074] At present, the vehicle rolling rate of the million-ton static scale in Laiwu Power Plant has been greatly reduced compared with that before October.

[0075] Table 3 Hook-removing Performance Comparison Table

[0076]

[0077] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs and other various media that can store program codes.

[0078] The logic and / or steps represented in the flowchart or described in other ways herein, for example, can be considered as a definite sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in combination with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0079] More specific examples (a non-exhaustive list) of computer-readable media include the following: an electrical connection (electronic device) having one or more wirings, a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other media, then editing, interpreting, or otherwise processing it as appropriate, and then storing it in a computer memory.

[0080] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, any one or a combination of the following techniques known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having suitable combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0081] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A hook-unhooking positioning method for a car dumper static scale, characterized in that, Including: A limit switch is set within the traveling range of the car puller of the dumper; Collect the distance data between the railcar and the static scale, and set the uncoupling position; The PLC program of the dumper and the encoder measure the uncoupling distance; The setting of the uncoupling position includes that after setting the positioning switch, the positions of the front and rear wheels of the railcar are all placed on the scale body, and the distances between the front and rear wheels and the edge of the scale body are greater than 20 cm. After determining that the vehicle is above the scale body, when one wheel of the railcar passes the positioning switch, the positioning starts to measure the distance. When the railcar is in the middle of the scale body, set the uncoupling position, and the uncoupling position is between 28014 mm and 28574 mm from the positioning switch; If the distances between the front and rear wheels and the edge of the scale body are less than or equal to 20 cm, it is considered that the scale body cannot accommodate the railcar, and it is necessary to measure the closest wheel distance between the adjacent railcar and the railcar to be measured. If the distance is greater than the distances between the front and rear wheels of the railcar to be measured and the edge of the scale body, it is considered accurate weighing. If the distance is less than the distances between the front and rear wheels of the railcar to be measured and the edge of the scale body, it is considered that the front and rear railcars press the scale; After determining that the scale body can accurately weigh, uncouple in the uncoupling section. When there is a taut coupler or overlapping couplers between adjacent railcars, resulting in the uncoupling position not being in the uncoupling section, set a temporary uncoupling area to uncouple. After uncoupling, calculate the weight difference, expressed as: ΔW = W × [S × (L diff / (L adj - L)) + α × g p (L diff , L adj ) + β × h f (L diff , L adj )] Among them, W represents the predicted weight value, S represents the error coefficient, and L diff represents the distance between the uncoupling position after temporary adjustment and the standard uncoupling position, and L adj represents the range of the uncoupling interval after temporary adjustment, L represents the standard interval range of the uncoupling position, α and β respectively represent the weight of the position distribution parameter of the vehicle on the weighing body and the weight of the mechanical influence parameter of the adjacent car couplers during the uncoupling process, and g p (L diff , L adj ) and h f (L diff , L adj ) respectively represent the car body position distribution and the mechanical influence function during the uncoupling process; If the uncoupling position is not in the uncoupling section due to reasons other than taut couplers or overlapping couplers, it is judged as a positioning fault, including vehicle positioning fault, encoder fault, photoelectric switch fault, and car puller fault. Send a fault warning to the operation and maintenance platform, reposition the vehicle after maintenance, and determine again whether the uncoupling position is in the preset uncoupling section; The setting of the uncoupling position further includes: presetting the car receiving limit, parking and lowering the boom position, lowering the boom position, dumper entrance, inside the dumper, dumper exit, raising the boom position, car transfer positioning, and car pulling limit positioning with the car transfer positioning as the initial position, and setting a deceleration position switch at 16300 mm and an uncoupling position switch at 14730 mm. If a temporary uncoupling area has been set, calculate the position of the temporary uncoupling position switch according to the difference between the average value of the standard uncoupling section and the standard uncoupling position switch; 2. The uncoupling and positioning method of the tippler static scale according to claim 1, characterized in that: The limit switch includes successively setting the car receiving limit, parking and lowering the boom position, deceleration position, uncoupling position, lowering the boom position, dumper entrance, inside the dumper, dumper exit, raising the boom position, car pulling positioning, and car pulling limit; 3. The uncoupling and positioning method of the car dumper static scale according to claim 1 or 2, characterized in that: The car puller includes double positioning with an encoder and a positioning switch after setting the limit switch; 4. The uncoupling and positioning method of the car dumper static scale as described in claim 3, characterized in that: The collection of the distance data between the railcar and the static scale includes collecting the wheel distance between adjacent railcars, the front wheel distance from the scale, the rear wheel distance from the scale, and the railcar length; 5. The uncoupling and positioning method of the tippler static scale according to claim 4, characterized in that: The measurement of the distance by the frequency conversion frequency and the encoder pulse number includes that the incremental encoder outputs 1000 pulses per revolution, and the single pulse is 1.03 mm. Calculate that the encoder rotates one circle for 1030 mm according to the number of teeth of the encoder gear to judge the running distance of the car puller.

6. The uncoupling and positioning method of the tippler static scale according to claim 5, characterized in that: The PLC program of the dumper and the encoder measures the uncoupling distance, including when the car puller runs to the limit switch and the switch sends a signal. If the encoder value is not within the preset range, the PLC sends a warning to the operation and maintenance platform to inform of the fault, and tries to toggle the front switch again. If the front switch can be closed, it is regarded as an encoder fault, and an encoder fault warning is further sent and the dumper is rotated to a balanced state to suspend the operation; If the front switch cannot be closed, a switch fault warning is further sent, and an attempt is made to reset the dumper. If the reset is successful, the operation of the car puller is suspended and the position is in a balanced state. If the reset fails, manual control is performed to complete the uncoupling. If the encoder value is within the preset range, it runs normally. After completing the uncoupling of the dumper, it drives into the next wagon again.

7. A computer device, comprising a memory and a processor, the memory storing a computer program, characterized in that: When the processor executes the computer program, it implements the steps of the method described in any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the dumper static weighing uncoupling positioning method described in any one of claims 1 to 6.

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