Bolt construction method and device for improving bolt tightening accuracy

Abstract

The present application relates to a bolt construction method and device for improving bolt tightening accuracy, belonging to the technical field of bolt installation and construction. The bolt construction method includes: a bolt construction step, which includes: receiving a construction signal; then obtaining initial tightening torque data based on the construction signal and a torque sensor; judging whether the tightening torque data matches the specified tightening torque data based on the specifications of the bolt to be constructed; if not, adjusting the output torque; after the tightening torque data reaches the specified tightening torque data, obtaining rotation angle data in real time based on an angle sensor, and obtaining the actual bolt pre-tightening force value based on a bolt pre-tightening force formula; judging whether the actual value reaches the maximum expected value of the bolt pre-tightening force; if so, outputting a stop signal. The present application has the beneficial effect of enabling torque to be applied to the bolt more accurately, thereby reducing the impact on project quality.

Description

Technical Field

[0001] The present application relates to the technical field of bolt installation construction, and in particular to a bolt construction method and device for improving the bolt tightening accuracy. Background Art

[0002] During construction, bolts are often used to connect components. When installing bolts, they are typically tightened manually with a wrench. In practice, using a wrench to tighten bolts can make it difficult to accurately apply torque, leading to thread stripping or loosening of the bolts due to insufficient tightening, which can compromise project quality. Summary of the Invention

[0003] In order to enable torque to be applied to bolts more accurately and reduce the impact on project quality, the present application provides a bolt construction method and device that improve the accuracy of bolt tightening.

[0004] In a first aspect, the present application provides a bolt construction method for improving bolt tightening accuracy, which adopts the following technical solutions:

[0005] A bolt construction method for improving bolt tightening accuracy, comprising:

[0006] Bolt construction steps, the steps comprising:

[0007] Receive construction signals;

[0008] Based on the construction signal and the torque sensor, obtaining initial tightening torque data;

[0009] Based on the specifications of the bolts to be installed, determining whether the tightening torque data matches the specified tightening torque data, and if not, adjusting the output torque;

[0010] After the tightening torque data reaches the specified tightening torque data, the angle data is acquired in real time based on the angle sensor; based on the bolt preload formula θ=360°×FM / P×( C 1 S +1 / CP) to obtain the actual value of the bolt preload; where θ is the rotation angle of the bolt to be constructed, FM is the preload of the bolt to be constructed, P is the pitch of the bolt to be constructed, CS is the stiffness of the bolt to be constructed, and CP is the stiffness of the connected part;

[0011] Based on the specifications of the bolts to be constructed, obtaining a maximum estimated value of the bolt preload force;

[0012] Determining whether the actual value reaches the maximum expected value;

[0013] If so, a stop signal is output.

[0014] By adopting the above technical solution, during bolt construction, the initial tightening torque data of the construction device is first obtained. The tightening torque refers to the torque applied when the bolt is tightened. Since the specified tightening torque data can be obtained through the specifications of the bolt to be constructed, it is determined whether the initial tightening data matches the specified tightening torque. If not, the output torque is adjusted to make the two match. After the tightening torque reaches the specified tightening torque, the angle data is obtained. According to the bolt pre-tightening force formula, the actual value of the bolt pre-tightening force can be obtained in real time. Since the maximum expected value of the bolt pre-tightening force can be obtained by testing the bolt after leaving the factory, a stop signal can be output to stop the bolt construction when the actual value of the bolt pre-tightening force reaches the maximum expected value of the bolt pre-tightening force. Since the tightening torque and angle of the construction device can be detected to adjust the torque, the torque can be applied to the bolt more accurately, thereby reducing the impact on the project quality.

[0015] Optionally, the bolt construction method further includes:

[0016] Bolt pre-construction steps, said steps comprising:

[0017] Arrange magnetic field sensors, temperature sensors and humidity sensors;

[0018] acquiring magnetic field data based on the magnetic field sensor;

[0019] Determine whether the magnetic field data is less than a preset magnetic field threshold, and if so, output a safety signal;

[0020] Based on the safety signal and the temperature sensor and the humidity sensor, obtain an ambient temperature value and an ambient relative humidity percentage;

[0021] It is determined whether the ambient temperature value is within the ambient temperature range threshold and whether the ambient relative humidity percentage is less than a preset percentage. If so, the construction signal is output.

[0022] By adopting the above technical solution, since the torque sensor should not be installed in a strong magnetic environment, and should be installed in an environment with an ambient temperature of 0℃~60℃, a relative humidity of less than 90%, and no flammable or explosive materials, it is first judged whether it is in a strong magnetic environment based on the magnetic field data collected by the magnetic field sensor. If not, a safety signal will be output. Then, based on the temperature value collected by the temperature sensor and the humidity value collected by the humidity sensor, it is judged whether the ambient temperature is within 0℃~60℃ and the relative humidity is less than 90%. If so, a construction signal is output, and based on the construction signal, construction of the bolt is started.

[0023] Optionally, the bolt construction method further includes:

[0024] If the ambient temperature value is not within the ambient temperature range threshold, determining whether the ambient temperature value is equal to or less than the ambient temperature range minimum threshold;

[0025] If so, a heating signal is output;

[0026] Based on the heating signal, controlling the heating mechanism to heat the construction environment;

[0027] If not, a cooling signal is output;

[0028] Based on the cooling signal, the cooling mechanism is controlled to cool the construction environment.

[0029] By adopting the above technical solution, when the ambient temperature value is not within the ambient temperature range threshold, it is determined whether the ambient temperature value is equal to or less than the lowest threshold of the ambient temperature range. If so, it means that the ambient temperature is low, so the construction environment can be heated by controlling the heating mechanism to increase the ambient temperature; similarly, if the ambient temperature value is greater than or equal to the highest threshold of the ambient temperature range, it means that the ambient temperature is high, so the construction environment can be cooled by controlling the cooling mechanism to reduce the ambient temperature; thereby making the ambient temperature as compatible as possible with the measurement conditions of the composite torque sensor.

[0030] Optionally, the bolt construction method further includes:

[0031] If the relative humidity of the environment is greater than or equal to the preset percentage, a dehumidification signal is output;

[0032] Based on the dehumidification signal, the dehumidification mechanism is controlled to dehumidify the construction environment.

[0033] By adopting the above technical solution, when the construction environment is relatively humid, the dehumidification mechanism is controlled to dehumidify the construction environment, thereby making the environmental humidity as close as possible to the measurement conditions of the composite torque sensor.

[0034] Optionally, after the stop signal is output, the bolt construction method includes:

[0035] Get bolt image information;

[0036] Based on the image information, determining whether the bolt is abnormal;

[0037] If so, an abnormal signal is output;

[0038] If not, a construction completion signal is output.

[0039] By adopting the above technical solution, after stopping the bolt construction, the image information of the bolt is obtained and the image recognition algorithm is used to identify whether the bolt is abnormal. If so, it means that the bolt is abnormal and may be broken, so an abnormal signal is output to enable the construction personnel to replace it in time; if not, it means that the bolt is normal, and a construction completion signal is output to indicate that the construction is completed.

[0040] 6 Optionally, the bolt construction method further includes:

[0041] The bolt construction is completed, and the steps include:

[0042] Distribute information feedback instructions;

[0043] Based on the information feedback instruction, after uploading the feedback information of the bolt construction, the feedback information is obtained.

[0044] By adopting the above technical solution and uploading feedback information, information during the bolt construction process can be understood to provide data support for subsequent bolt construction.

[0045] Optionally, after outputting the abnormal signal, the step includes:

[0046] storing the abnormal signal;

[0047] Replace the bolts and re-construct. After N times of construction, determine whether the number of abnormal signals exceeds the number threshold;

[0048] If so, adjust the maximum expected value of the bolt preload force.

[0049] By adopting the above technical solution, if an abnormal signal is generated after replacing the bolts multiple times in a row, it means that the maximum expected value of the bolt preload force is abnormal. Therefore, it is necessary to adjust the maximum expected value of the bolt preload force to reduce the occurrence of abnormal situations.

[0050] In a second aspect, the present application provides a bolt construction device for improving the accuracy of bolt tightening, which adopts the following technical solution: A bolt construction device for improving the accuracy of bolt tightening, comprising:

[0051] Torque output end, used to tighten the bolt;

[0052] A torque sensor is installed at the torque output end and is used to collect initial tightening torque data;

[0053] An angle sensor, installed at the torque output end, for collecting rotation angle data;

[0054] The controller is used to receive a construction signal and obtain the initial tightening torque data based on the construction signal; the controller determines whether the tightening torque data matches the specified tightening torque data, and if not, adjusts the output torque of the torque output end; after determining that the tightening torque data reaches the specified tightening torque data, the controller obtains the angle data in real time and obtains the actual value of the bolt pre-tightening force based on the bolt pre-tightening force formula; and determines whether the actual value reaches the maximum expected value of the bolt pre-tightening force, and if so, outputs a stop signal.

[0055] By adopting the above technical solution, during bolt construction, after the torque output end is started, the torque sensor collects the initial tightening torque data, the controller obtains the torque data, and then determines whether the initial tightening data matches the specified tightening torque. If not, the output torque of the torque output end is adjusted to make the two match. After matching, the torque output end tightens the bolt, the angle sensor collects the angle data, and the controller obtains the angle data. According to the bolt pre-tightening force formula, the actual value of the bolt pre-tightening force can be obtained in real time. Since the maximum expected value of the bolt pre-tightening force can be obtained by testing the bolt after leaving the factory, a stop signal can be output to stop the bolt construction when the actual value of the bolt pre-tightening force reaches the maximum expected value of the bolt pre-tightening force. Since the tightening torque and angle of the construction device can be detected to adjust the torque, the torque can be applied to the bolt more accurately, thereby reducing the impact on the project quality.

[0056] Optionally, the bolt construction device further includes:

[0057] A magnetic field sensor for collecting magnetic field data;

[0058] Temperature sensor, used to detect the ambient temperature of the construction environment;

[0059] Humidity sensor, used to detect the relative humidity of the environment to be constructed;

[0060] The controller is connected to the magnetic field sensor, the temperature sensor and the humidity sensor respectively.

[0061] By adopting the above technical solution, since the torque sensor should not be installed in a strong magnetic environment, and should be installed in an environment with an ambient temperature of 0℃~60℃, a relative humidity of less than 90%, and no flammable or explosive materials, a magnetic field sensor, a temperature sensor and a humidity sensor are arranged. The controller determines whether it is in a strong magnetic environment based on the magnetic field data collected by the magnetic field sensor. If not, it will output a safety signal. Then the controller determines whether the ambient temperature is within 0℃~60℃ and the relative humidity is less than 90% based on the temperature value collected by the temperature sensor and the humidity value collected by the humidity sensor. If so, it outputs a construction signal, and the controller controls the torque output end to start construction on the bolt.

[0062] Optionally, the bolt construction device further includes:

[0063] A heating mechanism, configured to receive and respond to a heating signal to heat the construction environment;

[0064] A cooling mechanism, configured to receive and respond to a cooling signal to cool the construction environment;

[0065] The controller is connected to the heating mechanism and the cooling mechanism respectively.

[0066] By adopting the above technical solution, when the controller determines that the ambient temperature value is not within the ambient temperature range threshold, it continues to determine whether the ambient temperature value is equal to or less than the lowest threshold of the ambient temperature range. If so, it means that the ambient temperature is low, so the construction environment can be heated by controlling the heating mechanism to increase the ambient temperature; similarly, if the controller determines that the ambient temperature value is greater than or equal to the highest threshold of the ambient temperature range, it means that the ambient temperature is high, so the construction environment can be cooled by controlling the cooling mechanism to reduce the ambient temperature; thereby making the ambient temperature composite torque sensor measurement conditions as much as possible.

[0067] In summary, this application has at least the following beneficial effects:

[0068] 1. The purpose of judging whether the tightening torque data matches the specified tightening torque data and whether the actual value of the bolt preload reaches the maximum expected value of the bolt preload is to adjust the torque, so that the torque can be applied to the bolt more accurately, thereby reducing the impact on the project quality.

[0069] 2. The purpose of judging whether the magnetic field data is less than the magnetic field threshold, whether the ambient temperature value is within the ambient temperature range threshold, and whether the ambient relative humidity value percentage is less than the preset percentage is that the torque sensor should not be installed in a strong magnetic environment, and should be installed in an environment with an ambient temperature of 0℃~60℃, a relative humidity of less than 90%, and no flammable or explosive materials. Therefore, the temperature value collected by the temperature sensor and the humidity value collected by the humidity sensor can be used to judge whether the ambient temperature is within 0℃~60℃ and the relative humidity is less than 90%, thereby deciding whether to construct the bolt.

[0070] 3. The purpose of outputting a heating signal or a cooling signal is to make the ambient temperature as close to the measurement conditions of the torque sensor as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 This is a flowchart of the overall steps of the embodiment of the method of this application;

[0072] Figure 2 yes Figure 1S110 is a flowchart of a specific implementation method;

[0073] Figure 3 This is a flowchart of an implementation method of step 1 that can be executed after S115;

[0074] Figure 4 is a flowchart of another embodiment of the steps that may be performed after S115;

[0075] Figure 5 yes Figure 1 S120 is a flowchart of a specific implementation method;

[0076] Figure 6 It is a flowchart of the steps that can be executed after the stop signal is output;

[0077] Figure 7 It is a flowchart of the steps that can be executed after the abnormal signal is output;

[0078] Figure 8 yes Figure 1 S130 is a flowchart of a specific implementation method;

[0079] Figure 9 This is a structural block diagram of an implementation method of the first embodiment of the device of the present application;

[0080] Figure 10 It is a structural block diagram of another implementation method of the device embodiment of the present application.

[0081] Explanation of the accompanying drawings: 101, torque output end; 102, torque sensor; 103, angle sensor; 104, controller; 105, magnetic field sensor; 106, temperature sensor; 107, humidity sensor; 108, heating mechanism; 109, cooling mechanism; 110, dehumidification mechanism; 111, image sensor. DETAILED DESCRIPTION

[0082] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1 -Attached Figure 10 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0083] One embodiment of the present application discloses a bolt construction method for improving the bolt tightening accuracy. Figure 1 As an implementation of the construction method, the construction method may include S110-S130:

[0084] S110, bolt pre-construction step;

[0085] S120, bolt construction steps;

[0086] S130, bolt construction completion step.

[0087] Reference Figure 2 For S110, a specific implementation may include S111-S115:

[0088] S111, arranging the magnetic field sensor 105, the temperature sensor 106 and the humidity sensor 107;

[0089] S112, acquiring magnetic field data based on the magnetic field sensor 105;

[0090] S113, determining whether the magnetic field data is less than a preset magnetic field threshold, if so, outputting a safety signal, if not, changing the bolt construction environment;

[0091] S114, obtaining the ambient temperature value and the ambient relative humidity percentage based on the safety signal and the temperature sensor 106 and the humidity sensor 107;

[0092] S115, judging whether the ambient temperature value is within the ambient temperature range threshold and whether the ambient relative humidity percentage is less than a preset percentage, and if so, outputting a construction signal.

[0093] Reference Figure 3 Furthermore, after S115, one embodiment may execute S116-S1191:

[0094] S116, if the ambient temperature value is not within the ambient temperature range threshold, determining whether the ambient temperature value is equal to or less than the ambient temperature range minimum threshold;

[0095] S117, if yes, output a heating signal;

[0096] S118, based on the heating signal, controlling the heating mechanism 108 to heat the construction environment;

[0097] S119, if not, output a cooling signal;

[0098] Specifically, if no, it means that the ambient temperature value is greater than or equal to the highest threshold of the ambient temperature range.

[0099] S1191, based on the cooling signal, control the cooling mechanism 109 to cool the construction environment.

[0100] The heating mechanism 108 may be a hot air blower or an electric heating tube, and the cooling mechanism 109 may be an air conditioner or an industrial air conditioner. There is no limitation on the types of the heating mechanism 108 and the cooling mechanism 109.

[0101] Reference Figure 4 Furthermore, after S115, another embodiment may execute S1192-S1193:

[0102] S1192, if the ambient relative humidity percentage is greater than or equal to the preset percentage, output a dehumidification signal;

[0103] S1193, based on the dehumidification signal, control the dehumidification mechanism 110 to dehumidify the construction environment.

[0104] Specifically, the dehumidification mechanism 110 may be a dehumidifier, and the dehumidification structure is not limited.

[0105] It should be noted that when S116-S1191 is executed, the relative humidity percentage of the environment may be less than the preset percentage; when S1192-S1193 is executed, the ambient temperature value may be within the ambient temperature range threshold. In addition, S116-S1191 and S1192-S1193 may be executed together.

[0106] Reference Figure 5 , for a specific implementation of S120, S120 may specifically include S121-S127;

[0107] S121, receiving a construction signal;

[0108] S122, acquiring initial tightening torque data based on the construction signal and the torque sensor 102;

[0109] S123, based on the specifications of the bolts to be installed, determining whether the tightening torque data matches the specified tightening torque data, and if not, adjusting the output torque; the match can be the same;

[0110] S124, after the tightening torque data reaches the specified tightening torque data, the angle data is acquired in real time based on the angle sensor 103; S125, based on the bolt preload formula θ = 360° × FM / P × (1 / CS + 1 / CP), the actual value of the bolt preload is obtained;

[0111] Among them, θ is the rotation angle of the bolt to be constructed, FM is the preload of the bolt to be constructed, P is the pitch of the bolt to be constructed, CS is the stiffness of the bolt to be constructed, and CP is the stiffness of the connected part; θ is the rotation angle data, that is, the bolt rotation angle, which can be obtained, and P, CS, and CP are all known.

[0112] S126, based on the specifications of the bolts to be constructed, obtaining a maximum estimated value of the bolt preload force;

[0113] S127, determine whether the actual value reaches the maximum expected value, and if so, output a stop signal.

[0114] Specifically, the specifications of construction bolts include specified tightening torque data, maximum expected value of bolt preload force, and other data; all of which are obtained based on the testing of the construction bolts after leaving the factory.

[0115] Reference Figure 6 , further, after outputting the stop signal, S128-S1292 may also be executed:

[0116] S128, obtaining bolt image information;

[0117] S129, judging whether the bolt is abnormal based on the image information;

[0118] S1291, if yes, output an abnormal signal;

[0119] S1292: If not, output a construction completion signal.

[0120] Based on the image sensor 111, image information of the bolt is obtained, and then the bolt features are identified according to the image recognition algorithm. The bolt features are compared with the bolt features in a normal tightening state to determine whether the bolt is abnormal, where abnormalities include breakage, tilting, etc. The image recognition algorithm is an existing image recognition algorithm.

[0121] Reference Figure 7 Furthermore, before S1292, S1293-S1295 can also be executed:

[0122] S1293, storing abnormal signal;

[0123] S1294: Replace the bolts and re-construct. After N times of construction, determine whether the number of abnormal signals exceeds the number threshold.

[0124] S1295: If yes, output an adjustment signal to adjust the maximum expected value of the bolt preload force.

[0125] After storing the abnormal signal, continue to replace the new bolt and re-construct, or construct other bolts. After construction N times, if the number of stored abnormal signals exceeds the number threshold, it means that there is a problem with the setting of the maximum expected value of the bolt preload force, so the maximum expected value of the bolt preload force needs to be adjusted; the adjustment can be to update the construction bolt specifications.

[0126] Reference Figure 8 For a specific implementation of S130, S130 may specifically include S131-S132:

[0127] S131, dispatching information feedback instructions;

[0128] S132, based on the information feedback instruction, after uploading the feedback information of the bolt construction, obtaining the feedback information.

[0129] Specifically, a feedback command can be issued based on a construction completion signal. This signal can be sent in S1292 or sent separately by the user. After receiving the feedback command, the user can upload feedback information about the bolt construction by scanning a QR code or sending feedback via GPRS (Bluetooth) transmission technology. Feedback information can include bolt rotation angle data, bolt tightness status, and more.

[0130] The implementation principle of this embodiment is:

[0131] Arrange a magnetic field sensor 105, a temperature sensor 106 and a humidity sensor 107 to obtain magnetic field data. When the magnetic field data is less than the magnetic field threshold, obtain the ambient temperature value and the ambient relative humidity percentage; if the ambient temperature value is within the ambient temperature range threshold and the ambient relative humidity value percentage is less than the preset percentage, output a construction signal, and then obtain the initial tightening torque data. If the tightening torque data does not match the specified tightening torque data, adjust the output torque; after the tightening torque data reaches the specified tightening torque data, obtain the rotation angle data in real time based on the angle sensor 103, and obtain the actual value of the bolt pre-tightening force based on the bolt pre-tightening force formula. If the actual value of the bolt pre-tightening force reaches the maximum expected value of the bolt pre-tightening force, output a stop signal; obtain the bolt image information to determine whether the bolt is abnormal. If not, output a construction completion signal, send an information feedback instruction, and obtain feedback information.

[0132] Based on the above method embodiment, another embodiment of the present application discloses a bolt construction device for improving the accuracy of bolt tightening. Figure 9 As an embodiment of the construction device, the construction device may include:

[0133] The torque output end 101 is used to tighten the bolt. The torque output end 101 can be a socket of an electric wrench or an output shaft of other rotary power sources;

[0134] The torque sensor 102 is installed at the torque output terminal 101 and is used to collect initial tightening torque data;

[0135] Angle sensor 103, installed at the torque output end 101, for collecting rotation angle data;

[0136] The controller 104 is used to receive the construction signal and obtain the initial tightening torque data based on the construction signal; the controller 104 determines whether the tightening torque data matches the specified tightening torque data, and if not, adjusts the output torque of the torque output terminal 101; after determining that the tightening torque data reaches the specified tightening torque data, the controller 104 obtains the angle data in real time, and obtains the actual value of the bolt pre-tightening force based on the bolt pre-tightening force formula; and determines whether the actual value reaches the maximum expected value of the bolt pre-tightening force, and if so, outputs a stop signal.

[0137] The construction device may also include:

[0138] A magnetic field sensor 105 is used to collect magnetic field data;

[0139] Temperature sensor 106, used to detect the ambient temperature of the environment to be constructed;

[0140] The humidity sensor 107 is used to detect the relative humidity of the environment to be constructed.

[0141] The construction device may also include:

[0142] A heating mechanism 108 is configured to receive and respond to a heating signal to heat the construction environment;

[0143] A cooling mechanism 109 is configured to receive and respond to a cooling signal to cool the construction environment;

[0144] The dehumidification mechanism 110 is used to receive and respond to the dehumidification signal to dehumidify the construction environment.

[0145] The controller 104 is connected to the magnetic field sensor 105 , the temperature sensor 106 , the humidity sensor 107 , the heating mechanism 108 , the cooling mechanism 109 and the dehumidification mechanism 110 , respectively.

[0146] The controller 104 determines whether the magnetic field data is less than the preset magnetic field threshold. If so, it outputs a safety signal; then, based on the safety signal, it determines whether the ambient temperature value is within the ambient temperature range threshold and whether the ambient relative humidity percentage is less than the preset percentage. If so, it outputs a construction signal; if the controller 104 determines whether the ambient temperature value is equal to or less than the lowest threshold of the ambient temperature range, it outputs a heating signal to control the heating mechanism 108 to heat the construction environment; if the controller 104 determines that the ambient temperature value is greater than or equal to the highest threshold of the ambient temperature range, it outputs a cooling signal to control the cooling mechanism 109 to cool the construction environment; if the controller 104 determines that the ambient relative humidity percentage is greater than or equal to the preset percentage, it outputs a dehumidification signal to control the dehumidification mechanism 110 to dehumidify the construction environment.

[0147] Reference Figure 10 As another embodiment of the construction device, the construction device may further include:

[0148] Image sensor 111, used to obtain bolt image information;

[0149] Controller 104, connected to image sensor 111, determines whether a bolt is abnormal. If so, it outputs an abnormality signal; otherwise, it outputs a completion signal. Controller 104 also stores the abnormality signal. After replacing the bolt and re-installing the bolt N times, it determines whether the number of abnormality signals exceeds a threshold. If so, it outputs an adjustment signal to adjust the maximum expected bolt preload force.

[0150] After receiving the construction completion signal, the controller 104 sends an information feedback instruction, and obtains feedback information after the user uploads the feedback information of the bolt construction.

[0151] The implementation principle of this embodiment is:

[0152] Arrange a magnetic field sensor 105, a temperature sensor 106 and a humidity sensor 107 to control the acquisition of magnetic field data. When the magnetic field data is less than the magnetic field threshold, the controller 104 obtains the ambient temperature value and the ambient relative humidity percentage; if the ambient temperature value is within the ambient temperature range threshold and the ambient relative humidity percentage is less than the preset percentage, the controller 104 outputs a construction signal, and then the controller 104 obtains the initial tightening torque data. If the tightening torque data does not match the specified tightening torque data, the controller 104 adjusts the output torque; after the tightening torque data reaches the specified tightening torque data, the controller 104 obtains the rotation angle data in real time, and obtains the actual value of the bolt pre-tightening force based on the bolt pre-tightening force formula. If the actual value of the bolt pre-tightening force reaches the maximum expected value of the bolt pre-tightening force, the controller 104 outputs a stop signal; the controller 104 obtains the bolt image information to determine whether the bolt is abnormal. If not, the construction completion signal is output. After the construction is completed, the controller 104 sends an information feedback instruction and obtains feedback information.

[0153] The above are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Unless otherwise stated, any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features. In other words, unless otherwise stated, each feature is merely an example of a series of equivalent or similar features.

Claims

1. A bolt construction method for improving bolt tightening accuracy, characterized in that: include: Bolt construction steps, the steps comprising: Receive construction signals; Based on the construction signal and the torque sensor (102), initial tightening torque data is obtained; Based on the specifications of the bolts to be installed, determining whether the tightening torque data matches the specified tightening torque data, and if not, adjusting the output torque; After the tightening torque data reaches the specified tightening torque data, obtaining rotation angle data in real time based on the angle sensor (103); The actual bolt preload value is obtained based on the bolt preload formula θ = 360° × FM / P × (1 / CS + 1 / CP). Here, θ is the bolt rotation angle, FM is the bolt preload, P is the bolt pitch, CS is the bolt stiffness, and CP is the stiffness of the connected component. Based on the specifications of the bolts to be constructed, obtaining a maximum estimated value of the bolt preload force; Determining whether the actual value reaches the maximum expected value; If so, a stop signal is output; Get bolt image information; Based on the image information, determining whether the bolt is abnormal; If so, an abnormal signal is output; If not, output the construction completion signal; After the abnormal signal is output, the method includes: storing the abnormal signal; Replace the bolts and re-construct. After N times of construction, determine whether the number of abnormal signals exceeds the number threshold; If so, adjust the maximum expected value of the bolt preload force.

2. A bolt construction method for improving bolt tightening accuracy according to claim 1, characterized in that: The bolt construction method also includes: Bolt pre-construction steps, said steps comprising: Arranging a magnetic field sensor (105), a temperature sensor (106) and a humidity sensor (107); Acquiring magnetic field data based on the magnetic field sensor (105); Determine whether the magnetic field data is less than a preset magnetic field threshold, and if so, output a safety signal; Based on the safety signal and the temperature sensor (106) and the humidity sensor (107), obtaining an ambient temperature value and an ambient relative humidity percentage; It is determined whether the ambient temperature value is within the ambient temperature range threshold and whether the ambient relative humidity percentage is less than a preset percentage. If so, the construction signal is output.

3. A bolt construction method for improving bolt tightening accuracy according to claim 2, characterized in that: The bolt construction method also includes: If the ambient temperature value is not within the ambient temperature range threshold, determining whether the ambient temperature value is equal to or less than the ambient temperature range minimum threshold; If so, a heating signal is output; Based on the heating signal, controlling the heating mechanism (108) to heat the construction environment; If not, a cooling signal is output; Based on the cooling signal, the cooling mechanism (109) is controlled to cool the construction environment.

4. A bolt construction method for improving bolt tightening accuracy according to claim 2, characterized in that: The bolt construction method also includes: If the relative humidity of the environment is greater than or equal to the preset percentage, a dehumidification signal is output; Based on the dehumidification signal, the dehumidification mechanism (110) is controlled to dehumidify the construction environment.

5. A bolt construction method for improving bolt tightening accuracy according to claim 1, characterized in that: The bolt construction method also includes: The bolt construction is completed, and the steps include: Distribute information feedback instructions; Based on the information feedback instruction, after uploading the feedback information of the bolt construction, the feedback information is obtained.

6. A bolt construction device for improving bolt tightening accuracy, characterized in that: The bolt construction method for improving bolt tightening accuracy according to any one of claims 1 to 5 comprises: A torque output end (101) is used to tighten the bolt; A torque sensor (102) is mounted on the torque output end (101) and is used to collect initial tightening torque data; An angle sensor (103), mounted on the torque output end (101), for collecting rotation angle data; The controller (104) is used to receive a construction signal and obtain the initial tightening torque data based on the construction signal; the controller (104) determines whether the tightening torque data matches the specified tightening torque data, and if not, adjusts the output torque of the torque output end (101); after determining that the tightening torque data reaches the specified tightening torque data, the controller (104) obtains the rotation angle data in real time and obtains the actual value of the bolt pre-tightening force based on the bolt pre-tightening force formula; and determines whether the actual value reaches the maximum expected value of the bolt pre-tightening force, and if so, outputs a stop signal.

7. A bolt construction device for improving bolt tightening accuracy according to claim 6, characterized in that: include: The bolt construction device also includes: A magnetic field sensor (105) for collecting magnetic field data; A temperature sensor (106) is used to detect the ambient temperature of the construction environment; A humidity sensor (107) is used to detect the relative humidity of the environment to be constructed; The controller (104) is connected to the magnetic field sensor (105), the temperature sensor (106) and the humidity sensor (107) respectively.

8. The bolt construction device for improving bolt tightening accuracy according to claim 6, characterized in that: The bolt construction device also includes: A heating mechanism (108) is used to receive and respond to a heating signal to heat the construction environment; The cooling mechanism (109) is used to receive and respond to the cooling signal to cool the construction environment; the controller (104) is connected to the heating mechanism (108) and the cooling mechanism (109) respectively.

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