WO2017035869A1

WO2017035869A1 - Electrically powered head quality measurement method and system

Info

Publication number: WO2017035869A1
Application number: PCT/CN2015/089821
Authority: WO
Inventors: 李雪海; 钟奕
Original assignee: 深圳市浚海仪表设备有限公司
Priority date: 2015-08-28
Filing date: 2015-09-17
Publication date: 2017-03-09
Also published as: CN105136451B; CN105136451A

Abstract

Provided are an electrically powered head quality measurement method and system, said electrically powered head (100) quality measurement method comprising the following steps: S1: mechanically connecting a to-be-tested electrically powered head (100) to a torque checking platform (200) matching the model of the to-be-tested electrically powered head (100); S2: causing the electrically powered head (100) to commence operation according to set electrically powered head (100) parameters, thus driving a drive chain (201) in the housing of the torque checking platform (200) to rotate; S3: during the process of the electrically powered head (100) transferring torque, inputting a continuous current signal to a magnetic-powder brake (204) so as to control the magnetic powder brake (204) to produce a braking torque to brake the drive chain (201); during the process of braking the drive chain (201), measuring, by means of four pressure transducers (203) arranged on the side face of an outer ring gear of a planetary transmission (202), the change in torque transferred by the electrically powered head (100), to generate first measurement data; S4: acquiring the first measurement data by means of a data acquisition card (401), inputting the data to a computer (400) to generate an attribute curve of the torque change of the electrically powered head (100), and performing by means of the computer (400) a comparison and analysis of the attribute curve of the torque change of the electrically powered head (100) and the parameters of the electrically powered head (100) to obtain a result of the measurement of the quality of the electrically powered head (100).

Description

Electric head quality detecting method and system

Technical field

[0001] The present invention relates to the field of power head calibration technology, and more particularly to a power head quality detecting method and system.

Background technique

[0002] Electric Actuator (Electric Head) The product belongs to an industrial automation control device, which is installed on various types of valves, generates torque by hydraulic or pneumatic action and acts on the valve to realize remote control of the valve.

[0003] The drawbacks of this type of product are: With the extension of the turn-to-turn, the liquid or gas in the electric actuator pipe may change, resulting in a change in the pressure inside the pipe, which in turn causes the electric actuator to deteriorate in quality and electric execution. The mechanism of the valve is not accurate enough, and the user can hardly distinguish the electric actuator with unqualified quality by the naked eye.

technical problem

[0004] The technical problem to be solved by the present invention is to provide a power head quality detecting method and system capable of accurately identifying an electric head having a substandard quality, in view of the above-mentioned drawbacks of the prior art.

Problem solution

Technical solution

[0005] The technical solution adopted by the present invention to solve the technical problem thereof is: constructing a power head quality detecting method, comprising the following steps:

[0006] Sl, mechanically connecting the electric head to be tested and a torque calibration table matched with the model of the electric motor to be tested, the torque verification table comprises a casing, a transmission chain installed in the casing, a planetary transmission, a magnetic powder brake, a power transmitter, and four pressure sensors disposed on a side of the outer ring gear of the planetary transmission;

[0007] S2, causing the electric head to start working according to the set electric head parameter, and then driving the transmission chain in the torque calibration table housing, the electric head parameters including starting torque, blocking torque, rated torque, rated current, and rated Power

[0008] S3, during the torque transmission of the electric head, input a continuous current signal to the magnetic powder brake to control the magnetic powder brake to generate a braking torque to brake the transmission chain, during the transmission chain braking process, through the four The pressure sensor detects a change in torque transmitted through the planetary transmission to generate first detection data;

[0009] S4, collecting the first detection data by the data acquisition card, inputting the first detection data into the computer to generate the electric head torque variation characteristic curve, and performing the electric motor head torque variation characteristic curve and the relevant parameters in the electric motor head parameter through a computer The results of the power head quality test were obtained by comparative analysis.

[0010] In the above-described power head quality detecting method of the present invention, the method further includes the following steps between the step S1 and the step S2:

[0011] S12, detecting a line connection state between the pressure sensor and the power transmitter, the electric control box, and the data acquisition card inserted into the PCMCIA slot of the torque calibration table, and determining whether the line connection status is normal

[0012] If the line connection status is abnormal, a corresponding prompt pops up on the computer display.

[0013] In the above-described power head quality detecting method of the present invention, the step S3 further includes the following steps:

[0014] During the braking process of the transmission chain, the working current and power of the magnetic powder brake are detected by the power transmitter

Obtaining second detection data and third detection data respectively;

[0015] The step S4 further includes:

[0016] collecting the second detection data and the third detection data transmitted by the electric control box through the data acquisition card, generating a magnetic powder brake operating current variation characteristic curve and a power variation characteristic curve according to the second detection data and the third detection data, and Output to the display for display;

[0017] The electric head torque variation characteristic curve, the magnetic powder brake operating current and the power variation characteristic curve displayed on the display screen are respectively compared with the correlation values in the electric motor head parameters, and the electric head quality is comprehensively identified according to the comparison result.

[0018] In the above-described power head quality detecting method of the present invention, the correlation values in the motor head torque variation characteristic curve, the magnetic powder brake operating current variation characteristic curve, and the power variation characteristic curve and the electric head parameter are respectively described in the step S4. For comparison, the steps for comprehensively identifying the quality of the motor head based on the comparison result include:

[0019] The power head quality is comprehensively detected by four determination conditions for identifying the quality of the power head preset in the computer, and the four determination conditions are as follows:

[0020] First determination condition: whether the starting torque and/or the blocking torque appearing in the torque head variation characteristic curve meet or exceed the rated starting torque and/or rating required to achieve valve control in the motor head parameter Stalling torque

[0021] Second determination condition: whether the torque peak appearing in the torque head variation characteristic curve meets or exceeds the rated torque required for the valve control in the power head parameter;

[0022] The third determination condition: whether the peak current appearing in the operating curve of the magnetic powder brake operating current reaches or exceeds the rated current required for the valve control in the parameter of the electric motor;

[0023] Fourth determination condition: whether the power peak appearing in the magnetic powder brake power variation characteristic curve reaches or exceeds the rated power required for realizing valve control in the electric motor head parameter;

[0024] If all of the four determination conditions are satisfied, the power head is identified as a qualified product.

[0025] In the above-described power head quality detecting method of the present invention, the method further includes the following steps after the step S4:

[0026] S5, storing the first detection data, the second detection data, and the third detection data in a database, and storing the model of the electric head and the model of the torque calibration table matched with the model of the electric head as the first stored in the database. An index of the detection data, the second detection data, and the third detection data;

[0027] S6. Receive a computer printing instruction, and print out the power head torque variation characteristic curve, the magnetic powder brake working current variation characteristic curve, and the power variation characteristic curve displayed on the computer display screen.

[0028] The present invention also constructs a power head quality detecting system, the system comprising:

[0029] a plurality of electric heads are used for starting and running according to the set electric head parameters, and then driving the transmission chain in the torque calibration table housing, the electric head parameters including starting torque, blocking torque, rated torque, and rated Current, rated power;

[0030] a plurality of torque checkers respectively mechanically coupled to the plurality of power heads, each of the torque checkers comprising a housing, a drive chain mounted in the housing, a planetary transmission, and a receiving computer The input current signal, the magnetic powder brake for braking the transmission chain according to the current signal, and the side of the outer ring gear of the planetary transmission, for detecting the change of the torque transmitted through the planetary transmission during the braking process of the transmission chain, generating the first detection Four pressure sensors for data;

[0031] an electric control box, electrically connected to the plurality of electric heads, the plurality of torque check stations, and a computer, respectively, for supplying power to the plurality of electric heads, the plurality of torque check stations, and a computer And performing signal transmission work between the plurality of power heads, the plurality of torque check stations, and a computer;

[0032] a computer, configured to collect first detection data transmitted by the electric control box during the braking process of the transmission chain, according to the first The detection data generates a power head torque variation characteristic curve, and compares the power head torque variation characteristic curve and the relevant parameters in the motor head parameter to obtain the power head quality detection result.

[0033] In the above-described power head quality detecting system of the present invention, the computer includes:

[0034] a line state diagnosis module, configured to detect a line connection state between a pressure sensor and a power transmitter, an electric control box, and a data acquisition card inserted into a PCMCIA slot of the torque calibration table, and determine the line connection Whether the status is normal;

[0035] The fault prompting module is configured to generate prompt information of the line fault after the line connection state is abnormal, and send the prompt information to a computer display screen for display.

[0036] In the above-mentioned power head quality detecting system of the present invention, the torque check station further includes a power transmitter installed in the housing for detecting the working current and power of the magnetic powder brake, respectively obtaining the second Detection data and third detection data;

[0037] The computer further includes:

[0038] a magnetic powder brake control module, configured to input a continuous current signal to the magnetic powder brake, and control the magnetic powder brake to generate a braking torque to brake the transmission chain;

[0039] a data acquisition card inserted into the PCMCIA slot, configured to collect the first detection data, the second detection data, and the third detection data;

[0040] a curve drawing module, configured to generate a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve, and a power variation characteristic according to the first detection data, the second detection data, and the third detection data, respectively Curve

[0041] a display screen for displaying a torque variation characteristic curve of the electric head, a working characteristic curve of the magnetic powder brake, and a power variation characteristic curve;

[0042] The power head quality detecting module is configured to compare the power head torque variation characteristic curve, the magnetic powder brake working current characteristic curve and the power variation characteristic curve with relevant parameters in the electric motor head parameter respectively, and compare the power head according to the comparison result Quality is comprehensively identified.

[0043] In the above-described power head quality detecting system of the present invention, the power head quality detecting module includes:

[0044] The electric head torque variation analysis sub-module is configured to read the torque value of the starting torque/blocking torque in the torque head characteristic curve of the electric head, and determine whether the starting torque/blocking torque in the torque head characteristic curve of the electric head reaches Or exceed the rated starting torque / rated blocking torque required to achieve valve control in the motor head parameters And reading the torque peak value in the torque head characteristic curve of the electric head, determining whether the torque peak value in the torque head characteristic curve of the electric head meets or exceeds the rated torque required for realizing the valve control in the parameter of the electric motor head, and the judgment result is identified as The first reference indicator for the quality of the motor head;

[0045] a magnetic powder brake working current change analysis sub-module, configured to read a current peak value in a magnetic powder brake operating current variation characteristic curve, and determine whether the current peak value meets or exceeds a rated current required for realizing valve control in the electric motor head parameter, The judgment result is used as a second reference index for identifying the quality of the power head;

[0046] a magnetic powder brake power variation analysis sub-module, configured to read a power peak in the magnetic powder brake power variation characteristic curve, and determine whether the power peak value meets or exceeds a rated power required for realizing valve control in the power head parameter, The judgment result is used as the third reference index for identifying the quality of the motor head.

[0047] In the above-described power head quality detecting system of the present invention, the system further includes:

[0048] a printer electrically connected to the computer, configured to receive a computer printing instruction, and print out a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve, and a power variation characteristic curve displayed on a computer display screen;

[0049] The computer further includes:

[0050] a database, configured to store first detection data, second detection data, and third detection data;

[0051] an index building module, configured to establish a mapping relationship between the electric head model, the torque checker model, the first detection data, the second detection data, and the third detection data, and the electric head model and the torque calibration table model As an index of the first detection data, the second detection data, and the third detection data stored in the database.

Advantageous effects of the invention

Beneficial effect

[0052] The implementation of the method and system for detecting the quality of the electric head of the present invention can achieve the following beneficial effects:

[0053] 1. The invention adopts four pressure sensors disposed on the side of the external gear of the planetary transmission to detect the change of the torque transmitted by the electric head, generates the first detection data, and detects the working current and power variation of the magnetic powder brake through the power transmitter. Generating the second detection data and the third detection data, collecting the first detection data, the second detection data and the third detection data through the data acquisition card, inputting the detection data into the computer to generate the electric head torque variation characteristic curve, and the magnetic powder brake working current change Curve and power variation characteristic curve, the power head quality detection scheme based on the three curves combined with the power head parameters for comprehensive analysis and identification of the power head quality, so the power head quality detection scheme of the invention can accurately identify the product The electric head with substandard quality achieves accurate detection of the quality of the electric head.

[0054] 2. The invention classifies and stores the data collected by the data acquisition card based on the model of the electric head and the model of the torque checker, and the model of the electric head and the model of the torque checker are used as the first detection data and the second detection stored in the database. The index of the data and the third detection data provides great convenience for the user to retrieve the historical data of the electric head in the database according to the model of the electric head.

[0055] 3. The invention detects the change of the torque transmitted by the electric head through four pressure sensors disposed outside the inner gear of the planetary transmission inside the torque checker, and the detection result is accurate and reliable.

Brief description of the drawing

DRAWINGS

1 is a flow chart of a first embodiment of a method for detecting a quality of a power head according to the present invention;

2 is a flowchart of a device state self-diagnosis method included in the power head quality detecting method shown in FIG. 1; [0058] FIG. 3 is a second embodiment of the power head quality detecting method shown in FIG. Flow chart of the example;

4 is a structural block diagram of a third embodiment of a method for detecting a quality of a power head according to the present invention;

5 is a structural block diagram of a power head quality detecting system provided by the present invention;

6 is the electric head shown in FIG. 5.

7 is a block diagram showing the structure of a first embodiment of the computer of the power head quality detecting system shown in FIG. 5.

8 is a block diagram showing the structure of a second embodiment of the computer of the power head quality detecting system shown in FIG. 5.

9 is a structural block diagram of a specific embodiment of the power head quality detecting module shown in FIG. 7.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

[0066] The present invention provides a method for detecting a quality of a motor head, which can output torque through the power head 100. 1 is a flow chart showing a method of detecting a quality of a motor head according to a first embodiment of the present invention. As shown in FIG. 1, the method includes the following steps:

[0068] First, in step S101, the electric head 100 to be tested is selected or added, and the matching torque calibration table 200 is selected according to the model and rated torque of the electric head 100 to be tested, and the electric head to be tested is passed through the transition flange and the output device. The 100 docking is mounted to the torque checker 200. The torque calibration table 200 includes a housing, a transmission chain 201 mounted in the housing, a planetary transmission 202, a magnetic powder brake 204, a power transmitter 205, and four pressure sensors 203 disposed on a side of the outer ring gear of the planetary transmission 202. ;

[0069] In the following step S102, the power head 100 is started to operate according to the power head parameter, thereby driving the drive chain 201 in the housing of the torque check station 200 to rotate.

[0070] Subsequently, in step S103, during the torque transmission of the power head, the computer 400 inputs a continuous current signal to the magnetic powder brake 204, and controls the magnetic powder brake 204 to generate a braking torque to brake the transmission chain 201, and brakes in the transmission chain 201. During the process, the four pressure sensors 203 detect the change in torque transmitted through the planetary transmission 202 to generate first detection data. During the torque change detection process, when two of the four pressure sensors 203 perform the detection operation (the acquisition data type is positive) 吋, and the other two pressure sensors 203 (the acquisition data type is negative) stop Work, or vice versa.

[0071] In step S104, the computer 400 collects the first detection data through the data acquisition card 401, and generates a power head torque variation characteristic curve according to the first detection detection data.

[0072] In step S105, the computer 400 obtains the power head quality detection result by comparing the power head torque variation characteristic curve and the relevant parameters in the power head parameter.

[0073] FIG. 2 is a flow chart showing a specific embodiment of the device network state self-diagnosis in the present invention, and the implementation flow is located between step S102 and step S103 in FIG. 1, as shown in FIG. The steps of the network state self-diagnosis embodiment specifically include:

[0074] First, in step S10231, the computer 400 detects the pressure sensor 203 and the power transmitter 205 in the housing of the torque calibration station 200, the electrical control box 300, and the data acquisition of the MCIA slot inserted into the computer 400PC through the line state diagnosis module 406. The line connection state between the cards 401.

[0075] Subsequently, in step S10232, it is determined whether the line connection is normal. If the line connection is normal, step 10233 is performed, otherwise, the process goes to step S103.

[0076] FIG. 3 is a flow chart showing another embodiment of the method for detecting the quality of the motor of the present invention, in which the implementation The first two steps of the example are the same as steps S101 and S102 in FIG. 1, and steps S103, S104, and S105 in FIG. 1 are replaced by steps S103', S104', and SIO 5', respectively.

[0077] As shown in FIG. 3, in step S103', during the braking process of the transmission chain 201, the working current and power of the magnetic powder brake are detected by the power transmitter 205, and the second detection data and the third detection are respectively obtained. Data

[0078] Then, in step S104', the second detection data and the third detection data transmitted by the electronic control box 300 are collected by the data acquisition card 401, and the operating curve of the magnetic powder brake is generated according to the second detection data and the third detection data. Power curve.

[0079] In step S105', the motor head torque variation characteristic curve, the magnetic powder brake operating current and the power curve characteristic curve are compared with the correlation values in the motor head parameters, respectively, and the quality of the motor head is comprehensively identified according to the comparison result.

[0080] The comprehensive quality identification process of the electric head is as follows:

In the present invention, the quality of the power head is comprehensively detected by four determination conditions for identifying the quality of the power head in the computer 400, and the four determination conditions are as follows:

[0082] The first determination condition: whether the starting torque and/or the blocking torque appearing in the torque head variation characteristic curve meet or exceed the rated starting torque and/or the rated blocking rotation required for realizing the valve control in the electric motor head parameter Torque

[0083] The second determination condition: whether the torque peak appearing in the power head torque variation characteristic curve meets or exceeds the rated torque required for realizing the valve control in the electric motor head parameter;

[0084] The third determination condition: whether the peak current appearing in the operating curve of the magnetic powder brake operating current reaches or exceeds the rated current required for realizing the valve control in the electric motor head parameter;

[0085] Fourth determination condition: whether the power peak appearing in the magnetic powder brake power variation characteristic curve reaches or exceeds the rated power required for realizing valve control in the electric motor head parameter;

[0086] If all of the four determination conditions are satisfied, the power head is identified as a qualified product.

4 is a flow chart showing another embodiment of the power head quality detecting method of the present invention. The embodiment further includes the following steps on the basis of the steps shown in FIG. 3:

[0088] Step S106: Store the first detection data, the second detection data, and the third detection data in the database 408.

And the motor model 100 and the torque checker 200 matched with the model of the motor 100 are stored in the number The index of the first detection data, the second detection data, and the third detection data of the library 408.

[0089] Step S107: The printer 500 receives the computer 400 print command, and prints the power head torque variation characteristic curve, the magnetic powder brake operating current variation characteristic curve, and the power variation characteristic curve displayed on the display screen 405 of the computer 400.

Based on the above-described power head quality detecting method, the present invention also proposes a power head quality detecting system, and FIG. 5 shows a structural block diagram of a specific embodiment of the power head quality detecting system of the present invention.

[0091] As shown in FIG. 5 and FIG. 6, the power head quality detecting system includes:

[0092] The plurality of electric heads 100 are configured to start and operate according to the set electric head parameters, and further drive the transmission chain 201 in the housing of the torque calibration table 200, the electric head parameters including the starting torque, the blocking torque, and the rated Torque, rated current, rated power;

[0093] a plurality of torque check tables 200 respectively mechanically connected to the plurality of electric heads 100, each of the torque check tables 20 includes a housing, a transmission chain 201 installed in the housing, and a planetary transmission 202. Receiving a current signal input by the computer 40 0 , a magnetic powder brake 204 for braking the transmission chain 201 according to the current signal, and a side of the outer ring gear of the planetary transmission 202 for detecting the transmission of the transmission chain 201 through the planetary transmission 202 transmitted torque changes, generating four pressure sensors 203 of the first detection data;

[0094] The electric control box 300 is electrically connected to the plurality of electric heads 100, the plurality of torque check tables 200 and the computer 400, respectively, for the plurality of electric heads 100, the plurality of torque check tables 200, The computer 400 supplies power, and performs signal transmission work between the plurality of power heads 100, the plurality of torque check stations 200, and the computer 400.

[0095] The computer 400 is configured to collect first detection data transmitted by the electric control box 300 during the braking process of the transmission chain 201, generate a torque variation characteristic curve of the electric head according to the first detection data, and simulate the torque variation characteristic curve of the electric head The relevant parameters in the motor head parameters are compared to obtain the power head quality detection result.

As shown in FIG. 6, the torque calibration station 200 further includes a power transmitter 205 for detecting the operating current and power of the magnetic powder brake 204 to generate second detection data and third detection data.

7 is a block diagram showing the structure of a specific embodiment of the computer 400 of FIG. 5. As shown in Figure 7, the computer 400 includes:

[0098] a magnetic powder brake control module 402, configured to input a continuous current signal to the magnetic powder brake 204 to control the magnetic powder brake 204 to generate a braking torque to brake the transmission chain 201; [0099] a data acquisition card 401 inserted into the PCMCIA slot for collecting first detection data from the four sensors and second detection data from the power transmitter 205 during braking of the transmission chain 201 And third detection data;

[0100] The curve drawing module 403 is configured to generate a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve, and a power variation characteristic curve according to the first detection data, the second detection data, and the third detection data, respectively;

[0101] The display screen 405 is configured to display a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve, and a power variation characteristic curve;

[0102] The power head quality detecting module 404 is configured to compare the power head torque variation characteristic curve, the magnetic powder brake operating current and the power variation characteristic curve with relevant parameters in the electric motor head parameter respectively, and compare the power head quality according to the comparison result. Identification.

[0103] FIG. 8 is a block diagram showing the structure of another embodiment of the computer 400 of FIG. 5. As shown in FIG. 8, the computer 400 further includes:

[0104] The line state diagnosis module 406 is configured to detect between the four pressure sensors 203 and the power transmitter 205 in the torque calibration station 200, the electrical control box 300, and the data acquisition card 401 inserted into the PCMCIA slot of the computer 400. Line connection status, determine whether the line connection status is normal;

[0105] The fault prompting module 407 is configured to generate a prompt information of the line fault after the line connection status is abnormal, and send the prompt information to the display 400 of the computer 400 for display;

[0106] The database 408 is configured to store first detection data, second detection data, and third detection data;

[0107] The index building module 409 is configured to establish a mapping relationship between the model of the electric head 100, the model of the torque checker 200, the first detection data, the second detection data, and the third detection data, and the model and torque of the electric head 100 The calibration station 200 model is used as an index of the first detection data, the second detection data, and the third detection data stored in the database 408.

9 shows a block diagram of a specific embodiment of the power head quality detecting module 404 of FIG. As shown in FIG. 9, the power head quality detecting module 404 includes:

[0109] The electric head torque variation analysis sub-module 4041 is configured to read the torque value of the starting torque/blocking torque in the torque head characteristic curve of the electric head, and determine whether the starting torque/blocking torque in the torque head characteristic curve of the electric head is Meet or exceed the rated starting torque / rated stalling required to achieve valve control in the motor head parameters Torque, and reading the torque peak value in the torque characteristic curve of the motor head, determining whether the torque peak in the torque characteristic curve of the motor head meets or exceeds the rated torque required for the valve control in the parameter of the motor head, and the judgment result is taken as Identify the first reference indicator for the quality of the motorized head;

[0110] The magnetic powder brake working current change analysis sub-module 4042 is configured to read the current peak value in the magnetic powder brake operating current variation characteristic curve, and determine whether the current peak value meets or exceeds the rated current required for the valve control in the electric motor head parameter. , the judgment result is used as a second reference indicator for identifying the quality of the power head;

[0111] a magnetic powder brake power variation analysis sub-module 4043, configured to read a power peak in the magnetic powder brake power variation characteristic curve, and determine whether the power peak value meets or exceeds a rated power required for realizing valve control in the power head parameter, The judgment result is used as a third reference index for identifying the quality of the motor head.

[0112] The advantages of the method and system for detecting the quality of the electric head of the present invention are as follows:

[0113] 1. The present invention adopts four pressure sensors 203 disposed on the side of the outer gear of the planetary transmission 202 to detect the torque variation transmitted by the electric motor 100, generates first detection data, and detects the working current of the magnetic powder brake through the power transmitter 205. And the power change, generating the second detection data and the third detection data, collecting the first detection data, the second detection data and the third detection data through the data acquisition card 401, and inputting the detection data into the computer 400 to generate the electric head torque variation characteristic curve The working curve of the magnetic powder brake and the characteristic curve of the power variation are based on the three curves combined with the parameters of the electric head to comprehensively analyze and identify the quality of the electric head. Therefore, the quality inspection method of the electric head of the present invention can be Accurately identify the electric head 100 whose product quality is not up to standard, and achieve accurate detection of the quality of the electric head.

[0114] 2. The present invention classifies and stores the collected data of the data acquisition card 401 based on the model of the electric head 100 and the model of the torque checker 200. The model of the electric head 100 and the model of the torque checker 200 are first stored in the database 408. The index of the detection data, the second detection data and the third detection data provides great convenience for the user to retrieve the historical data of the electric head 100 in the database 408 according to the model of the electric head 100.

[0115] 3. The present invention performs real-time detection on the torque variation transmitted by the electric motor 100 through four pressure sensors 203 disposed outside the gears of the planetary transmission 202 inside the torque calibration table 200, and the detection result is accurate and reliable.

[0116] A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer. In reading the storage medium, the program, after execution, may include the flow of an embodiment of the methods as described above. The storage medium may be a magnetic disk, an optical disk, or a read-only storage memory (Read only)

Memory, ROM) or Random ABBess Memory (RAM). The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the specific embodiments described above, and the specific embodiments described above are merely illustrative and not restrictive, and those skilled in the art In the light of the present invention, many forms may be made without departing from the spirit and scope of the invention as claimed.

Claims

Claim

[Claim 1] A method for detecting a quality of a power head, characterized in that it comprises the following steps:

51. Mechanically connecting the electric head to be tested and a torque calibration table matched with the model of the electric motor to be tested, the torque verification table comprises a housing, a transmission chain installed in the housing, a planetary transmission, a magnetic powder brake, and a power transmission And four pressure sensors disposed on the side of the outer ring gear of the planetary transmission;

52. The electric head is started according to the set electric head parameter, and then drives the transmission chain in the torque calibration table housing, and the electric head parameters include starting torque, blocking torque, rated torque, rated current, and rated power;

53. During the torque transmission of the electric head, a continuous current signal is input to the magnetic powder brake to control the braking torque generated by the magnetic powder brake to brake the transmission chain. During the braking process of the transmission chain, the four pressure sensors detect the a change in torque transmitted by the planetary transmission to generate first detection data;

54. Acquire the first detection data through the data acquisition card, input it into the computer to generate the electric head torque variation characteristic curve, and compare and analyze the electric head torque variation characteristic curve and the relevant parameters in the electric motor head parameter through the computer to obtain the electric head quality. Test results.

[Claim 2] The power head quality detecting method according to claim 1, wherein the method further includes the following steps between the step S1 and the step S2: S12, detecting a torque calibration table The line connection state between the pressure sensor and the power transmitter, the electric control box, and the data acquisition card inserted into the PCMCIA slot of the computer, to determine whether the line connection status is normal;

If the line connection status is not normal, a corresponding prompt will pop up on the computer display.

[Claim 3] The power head quality detecting method according to claim 2, wherein the step S

3 also includes the following steps:

During the braking process of the transmission chain, the working current and the power of the magnetic powder brake are detected by the power transmitter, and the second detection data and the third detection data are respectively obtained; the step S4 further includes:

Collecting the second detection data and the third detection data transmitted by the electric control box through the data acquisition card, Generating a magnetic powder brake operating current variation characteristic curve and a power variation characteristic curve according to the second detection data and the third detection data, and outputting the same to the display screen for display;

The electric head torque variation characteristic curve, the magnetic powder brake operating current and the power variation characteristic curve displayed on the display screen are respectively compared with the correlation values in the electric head parameters, and the quality of the electric motor head is comprehensively identified based on the comparison result.

[Claim 4] The power head quality detecting method according to claim 3, wherein the step S

In the method of 4, the electric head torque variation characteristic curve, the magnetic powder brake operating current variation characteristic curve and the power variation characteristic curve are compared with the correlation values in the electric motor head parameters respectively, and the steps for comprehensively identifying the electric head quality according to the comparison result specifically include :

The power quality of the motor is comprehensively detected by four determination conditions pre-determined by the computer for identifying the quality of the motor head. The four determination conditions are as follows:

First determination condition: Whether the starting torque and/or the blocking torque appearing in the torque head characteristic curve meet or exceed the rated starting torque and/or the rated blocking torque required for the valve control in the motor head parameter;

Second determination condition: Whether the torque peak appearing in the torque head characteristic curve meets or exceeds the rated torque required for valve control in the motor head parameter; Third determination condition: appears in the magnetic powder brake operating current variation characteristic curve Whether the current peak meets or exceeds the rated current required for valve control in the motor head parameter; Fourth determination condition: Whether the power peak appearing in the magnetic powder brake power variation characteristic curve meets or exceeds the power head parameter for valve control The required rated power; if the four determination conditions are met, the power head is identified as a qualified product.

[Claim 5] The power head quality detecting method according to claim 4, wherein the method further comprises the following steps after the step S4:

55. Store the first detection data, the second detection data, and the third detection data in a database, and use the power head model and the torque calibration table model matched with the power head model as the first detection data stored in the database. , an index of the second detection data and the third detection data;

56. Receiving computer printing instructions, the motor head torque variation characteristic curve, the magnetic powder brake working current variation characteristic curve and the power variation characteristic curve displayed on the computer display screen Make a printout.

[Claim 6] A power head quality detecting system, characterized in that the system comprises:

A plurality of electric heads are used for starting and running according to the set electric head parameters, and then driving the transmission chain in the torque calibration table housing, the electric head parameters including starting torque, blocking torque, rated torque, rated current, and rated Power

a plurality of torque checkers respectively mechanically coupled to the plurality of motorized heads, each of the torque checkers comprising a housing, a drive chain mounted in the housing, a planetary transmission, and a current for receiving a computer input a signal, a magnetic powder brake for braking the transmission chain according to the current signal, and a side of the outer ring gear of the planetary transmission, for detecting a change in torque transmitted through the planetary transmission during the braking process of the transmission chain, generating the first detection data a pressure sensor electric control box electrically connected to the plurality of electric heads, the plurality of torque check tables and a computer, respectively, for supplying power to the plurality of electric heads, the plurality of torque check tables, and a computer And performing signal transmission work between the plurality of power heads, the plurality of torque check stations, and a computer;

a computer, configured to collect first detection data transmitted by the electric control box during the braking process of the transmission chain, generate a torque characteristic curve of the electric head according to the first detection data, and correlate the torque characteristic curve of the electric head with the parameter of the electric head The parameters are compared to obtain the power head quality test result.

[Claim 7] The power head quality detecting system according to claim 6, wherein the computer comprises:

The line state diagnosis module is configured to detect a line connection state between the pressure sensor and the power transmitter, the electric control box, and the data acquisition card inserted into the PCMCIA slot of the torque calibration table, and determine whether the line connection status is normal. ;

The fault prompting module is configured to generate a prompt message of the line fault after the line connection status is abnormal, and send the prompt information to the computer display for display.

[Claim 8] The power head quality detecting system according to claim 7, wherein the torque checker further includes a power transmitter installed in the housing for working on the magnetic powder brake The current and the power are detected, and the second detection data and the third detection data are respectively obtained; the computer further includes:

a magnetic powder brake control module, configured to input a continuous current signal to the magnetic powder brake, and control the magnetic powder brake to generate a braking torque to brake the transmission chain;

a data acquisition card inserted into the PCMCIA slot, configured to collect the first detection data, the second detection data, and the third detection data;

a curve drawing module, configured to generate a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve, and a power variation characteristic curve respectively according to the first detection data, the second detection data, and the third detection data;

a display screen for displaying a torque variation characteristic curve of the motor head, a working current variation characteristic curve of the magnetic powder brake, and a power variation characteristic curve;

The electric head quality detecting module is used for comparing the electric head torque variation characteristic curve, the magnetic powder brake working current characteristic curve and the power variation characteristic curve with the relevant parameters in the electric motor head parameter respectively, and synthesizing the electric head quality according to the comparison result Identification.

[Claim 9] The power head quality detecting system according to claim 8, wherein the motor head quality detecting module comprises:

The electric head torque variation analysis sub-module is used for reading the torque value of the starting torque/blocking torque in the torque head characteristic curve of the electric head, and determining whether the starting torque/blocking torque in the torque head characteristic curve of the electric head reaches or exceeds the electric In the head parameter, the rated starting torque/rated blocking torque required to realize the valve control, and the torque peak value in the torque characteristic curve of the electric head are read, and it is judged whether the torque peak in the torque variation characteristic curve of the electric head reaches or exceeds the electric head. In the parameter, the rated torque required for valve control is used, and the judgment result is used as the first reference index for identifying the quality of the motor head;

The magnetic powder brake working current change analysis sub-module is used for reading the current peak value in the magnetic powder brake operating current variation characteristic curve, and determining whether the current peak value meets or exceeds the rated current required for realizing the valve control in the electric motor head parameter, and the judgment is made. The result serves as a second reference indicator for identifying the quality of the motorized head;

Magnetic powder brake power variation analysis sub-module for reading magnetic powder brake power variation characteristics The power peak in the curve determines whether the power peak meets or exceeds the rated power required for valve control in the motor head parameter, and the judgment result is used as the third reference index for identifying the quality of the motor head.

[Claim 10] The power head quality detecting system according to claim 9, wherein the system further comprises:

a printer electrically connected to the computer, configured to receive a computer printing instruction, and print out a power head torque variation characteristic curve, a magnetic powder brake operating current variation characteristic curve and a power variation characteristic curve displayed on a computer display screen; Also includes:

a database, configured to store first detection data, second detection data, and third detection data; an index construction module, configured to establish a power head model, a torque calibration station model, and first detection data, second detection data, and third detection The mapping relationship between the data, the electric head model and the torque checker model are used as indexes of the first detection data, the second detection data, and the third detection data stored in the database.