CN108994767B

CN108994767B - Bolt fastening device, control method and system, and data analysis method and system

Info

Publication number: CN108994767B
Application number: CN201810886558.2A
Authority: CN
Inventors: 沙克维
Original assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Current assignee: Beijing Goldwind Science and Creation Windpower Equipment Co Ltd
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2021-04-20
Anticipated expiration: 2038-08-06
Also published as: CN108994767A

Abstract

The invention provides a bolt fastening device, a control method and system, and a data analysis method and system. The bolt fastening device includes: a sleeve; the hydraulic wrench comprises a hydraulic pump, is connected to the sleeve and drives the sleeve to rotate; the sensor comprises a first sensor arranged on the sleeve, and collects mechanical parameters reflecting the fastening condition of the bolt to be fastened in real time during the fastening of the bolt to be fastened. The hydraulic pump is provided with a pressure regulating part, and the pressure regulating part regulates the oil pressure of the hydraulic pump based on mechanical parameters so as to regulate the torque of the hydraulic wrench. According to the technical scheme of the invention, the bolt can be accurately fastened, and a checking procedure can be omitted, so that the fastening quality and the fastening efficiency of the bolt can be improved.

Description

Bolt fastening device, control method and system, and data analysis method and system

Technical Field

The invention relates to the technical field of machinery, in particular to a bolt fastening device, a control method and system, a data analysis method and system and a bolt fastening and analysis system.

Background

Currently, large machines (e.g., wind turbine generator systems) are installed on site, often using high strength bolts as the primary connections. In the traditional construction process, manufacturers provide field installation technical guidance, high-strength bolt construction process and technical requirements, and installation unit operators use hydraulic wrenches to fasten high-strength bolts according to the high-strength bolt construction process and the technical requirements. Because the oil pressure of the hydraulic pump is a preset fixed value, the actual torque value of the hydraulic wrench is low due to the pressure loss of the hydraulic pipeline and the hydraulic pump, the pretightening force of the bolt is low, and the error of part of construction torque is larger than 10%, and exceeds the construction process standard.

Therefore, a bolt fastening device and a bolt fastening system capable of solving the above technical problems are needed.

Disclosure of Invention

In order to solve the above-described technical problems, the present invention provides a bolt fastening apparatus, a control method and system, a data analysis method and system, and a bolt fastening and analysis system capable of adjusting a torque of a hydraulic wrench in real time during fastening of a bolt to be fastened.

In one aspect of the present invention, there is provided a bolt fastening device including: a sleeve; the hydraulic wrench comprises a hydraulic pump and is connected to the sleeve and drives the sleeve to rotate; the sensor, the sensor is including setting up the first sensor on the sleeve to the sensor is treating fastening bolt and is handling the mechanical parameter of the fastening condition of fastening bolt of real-time acquisition reflection during fastening, and wherein, the hydraulic pump is provided with pressure regulating portion, and pressure regulating portion adjusts the moment of torsion in order to adjust hydraulic wrench's of hydraulic pressure hydraulic pump based on mechanical parameter.

Optionally, the pressure regulating part includes a stepping motor for regulating an oil pressure of the hydraulic pump to regulate a torque of the hydraulic wrench.

Optionally, the stepping motor is used for adjusting a pressure regulating valve of the hydraulic pump to pre-regulate the oil pressure of the hydraulic pump to a predetermined percentage of a target oil pressure corresponding to a pre-stored target mechanical parameter, and the hydraulic wrench is started to start fastening the bolt to be fastened.

Optionally, the first sensor comprises at least one of a torque sensor, an angle sensor and an axial force sensor, and the mechanical parameter comprises at least one of a torque value, a rotation angle value and an axial force value.

Optionally, the sensor further comprises a second sensor disposed on the hydraulic wrench, wherein the first sensor comprises at least one of a torque sensor and an axial force sensor, the second sensor is an angle sensor, and the mechanical parameter comprises at least one of a torque value, a rotation angle value, and an axial force value.

According to another aspect of the present invention, there is provided a control method for bolt fastening, the control method including: receiving real-time mechanical parameters reflecting the fastening condition of a bolt to be fastened; comparing the real-time mechanical parameters with the target mechanical parameters to obtain a comparison result; the torque of the hydraulic wrench is adjusted based on the comparison.

Optionally, adjusting the torque of the hydraulic wrench based on the comparison comprises: when the comparison result is that the difference value between the target mechanical parameter and the real-time mechanical parameter is larger than the first preset proportion of the target mechanical parameter, the hydraulic pump repeatedly executes oil supply and oil return operations to increase the torque of the hydraulic wrench until the difference value is reduced to the first preset proportion of the target mechanical parameter; when the comparison result shows that the difference value is smaller than or equal to a first preset proportion of the target mechanical parameter and larger than a second preset proportion of the target mechanical parameter, the hydraulic pump is enabled to keep oil supply operation, and the stepping motor is enabled to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump so as to increase the torque of the hydraulic wrench until the difference value is reduced to the second preset proportion of the target mechanical parameter, wherein the second preset proportion is smaller than the first preset proportion; when the difference value is within a second preset proportion from zero to the target mechanical parameter, the hydraulic wrench is closed, the hydraulic pump executes oil return operation, and fastening is finished.

Optionally, adjusting the torque of the hydraulic wrench (2) based on the comparison further comprises: and when the comparison result shows that the difference is smaller than or equal to the first preset proportion of the target mechanical parameter and larger than the second preset proportion of the target mechanical parameter, the stepping motor is enabled to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump, then under the condition that the torque of the hydraulic wrench is not changed, the stepping motor is enabled to retreat to the initial state, the hydraulic pump is enabled to execute one oil return and oil supply operation and maintain the oil supply operation, and the stepping motor is enabled to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump to increase the torque of the hydraulic wrench again until the difference is reduced to the second preset proportion of the target mechanical parameter.

Optionally, the control method further includes: the adjusting speed of the stepping motor adjusting pressure regulating valve is reduced along with the reduction of the difference.

Optionally, the real-time mechanical parameter and the target mechanical parameter are the same parameter and include a torque value and at least one of a rotation angle value and an axis force value.

According to another aspect of the present invention, there is provided a bolt fastening system including the bolt fastening device as described above and a controller that executes the control method as described above.

In another aspect of the present invention, there is provided a data analysis method, including: acquiring mechanical parameters reflecting the fastening condition of a bolt to be fastened; screening effective mechanical parameters from the mechanical parameters; and outputting the oil pressure regulation suggestion of the hydraulic pump based on the effective mechanical parameters.

Optionally, the operation of screening the mechanical parameters for effective mechanical parameters includes: determining the first mechanical parameter as the initial mechanical parameter of the fastening of a bolt to be fastened, and determining the first mechanical parameter closest to a preset target mechanical threshold as the final mechanical parameter of the fastening of the bolt to be fastened; determining a first non-zero mechanical parameter after the mechanical parameter of the bolt to be fastened is finished as the initial mechanical parameter of the next bolt to be fastened, and determining the next mechanical parameter closest to the target mechanical threshold as the mechanical parameter of the next bolt to be fastened; all non-zero mechanical parameters between the mechanical parameters at the beginning of tightening and the mechanical parameters at the end of tightening are screened as valid mechanical parameters.

Optionally, based on the effective mechanical parameter, outputting the suggested operation of oil pressure regulation of the hydraulic pump comprises: comparing the mechanical parameters of the fastening end of the bolt to be fastened with a preset target mechanical threshold; when the comparison result is that the mechanical parameter of the bolt to be fastened is smaller than a preset target mechanical threshold value, outputting an oil pressure regulation suggestion for increasing the oil pressure; and outputting an oil pressure regulation suggestion for keeping the current oil pressure when the comparison result is that the mechanical parameter of the fastening end of the bolt to be fastened is equal to a preset target mechanical threshold.

Optionally, the data analysis method further includes: and counting the number of the bolts to be fastened based on the mechanical parameters of the fastening start or the mechanical parameters of the fastening end.

Optionally, the data analysis method further includes: and calculating the difference value between the mechanical parameter of the bolt to be fastened after fastening and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target mechanical parameter to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result.

Optionally, the operation of judging whether the fastening quality of the bolt to be fastened is qualified includes: when the comparison result is that the difference value is within a second preset proportion from zero to the target mechanical parameter, determining that the fastening quality of the bolt to be fastened is qualified; and when the comparison result is that the difference is larger than a second preset proportion of the target mechanical parameters, determining that the fastening quality of the bolt to be fastened is unqualified.

Optionally, the data analysis method further includes: the calculated difference is stored as the loosening amount of the bolt to be fastened, and the loosening condition of the bolt to be fastened is judged based on the loosening amount, and the judgment result is output.

Alternatively, the operation of judging the loosening condition of the bolt to be fastened based on the loosening amount includes: when the loosening amount is larger than zero, determining that the bolt to be fastened is loosened; and when the loosening amount is equal to zero, determining that the bolt to be fastened does not loosen.

Optionally, the data analysis method further includes: acquiring associated information related to the effective mechanical parameters, and setting labels for the effective mechanical parameters based on the associated information; and storing the effective mechanical parameters with the labels, wherein the associated information comprises at least one of wind field information, machine position information, node information, bolt number information, construction party unit information, constructor information and grading information.

In another aspect of the present invention, there is provided a data analysis system including: the mechanical parameter acquisition module is used for acquiring mechanical parameters reflecting the fastening condition of the bolt to be fastened; the screening module is used for screening effective mechanical parameters from the mechanical parameters; the determination module comprises an oil pressure suggestion module, and the oil pressure suggestion module is used for outputting oil pressure regulation suggestions of the hydraulic pump based on effective mechanical parameters.

Optionally, the screening module is configured to: determining the first mechanical parameter as the initial mechanical parameter of the fastening of a bolt to be fastened, and determining the first mechanical parameter closest to a preset target mechanical threshold as the final mechanical parameter of the fastening of the bolt to be fastened; determining a first non-zero mechanical parameter after the mechanical parameter of the bolt to be fastened is finished as the initial mechanical parameter of the next bolt to be fastened, and determining the next mechanical parameter closest to the target mechanical threshold as the mechanical parameter of the next bolt to be fastened; all non-zero mechanical parameters between the mechanical parameters at the beginning of tightening and the mechanical parameters at the end of tightening are screened as valid mechanical parameters.

Optionally, the oil pressure advisory module is to: comparing the mechanical parameters of the fastening end of the bolt to be fastened with a preset target mechanical threshold; when the comparison result is that the mechanical parameter of the bolt to be fastened is smaller than a preset target mechanical threshold value, outputting an oil pressure regulation suggestion for increasing the oil pressure; and outputting an oil pressure regulation suggestion for keeping the current oil pressure when the comparison result is that the mechanical parameter of the fastening end of the bolt to be fastened is equal to a preset target mechanical threshold.

Optionally, the determining module further comprises: the statistical module is used for counting the number of the bolts to be fastened based on the mechanical parameters of the fastening start or the mechanical parameters of the fastening end so as to compare the number with the pre-stored number of the bolts, and thus determining whether all the bolts to be fastened are fastened; and the quality judgment module is used for calculating the difference value between the mechanical parameter of the bolt to be fastened after fastening and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target mechanical parameter to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result.

Optionally, the quality determination module is configured to: when the comparison result is that the difference value is within a second preset proportion from zero to the target mechanical parameter, determining that the fastening quality of the bolt to be fastened is qualified; and when the comparison result is that the difference is larger than a second preset proportion of the target mechanical parameters, determining that the fastening quality of the bolt to be fastened is unqualified.

Optionally, the quality determination module is further configured to: the calculated difference is stored as the loosening amount of the bolt to be fastened, and the loosening condition of the bolt to be fastened is judged based on the loosening amount, and the judgment result is output.

Optionally, the quality determination module is further configured to: when the loosening amount is larger than zero, determining that the bolt to be fastened is loosened; and when the loosening amount is equal to zero, determining that the bolt to be fastened does not loosen.

Optionally, the data analysis system further comprises: the label setting module is used for acquiring the associated information related to the effective mechanical parameters and setting labels for the effective mechanical parameters based on the associated information; the storage module is used for storing the effective mechanical parameters with the labels; the safety module is used for encrypting data comprising mechanical parameters, effective mechanical parameters and oil pressure regulation suggestions; and a permission module for: allowing a first user to access the data analysis system through a terminal, transmitting mechanical parameters with the mechanical parameter acquisition module and calling effective mechanical parameters from the storage module; and/or allowing a second user to access the data analysis system through the terminal, and to call the effective mechanical parameters from the storage module to set tags for the effective mechanical parameters and call the effective mechanical parameters from the storage module; and/or allowing a third user to access the data analysis system through the terminal, transmit mechanical parameters with the mechanical parameter acquisition module, retrieve effective mechanical parameters from the storage module, grade bolt fastening quality, constructors and constructors based on the effective mechanical parameters, set and modify labels, and set and create a first user right and a second user right; and/or allowing a fourth user to set and create third user permissions.

In another aspect of the present invention, a bolt fastening and analyzing system is provided, which includes the bolt fastening device and the data analyzing system.

In another aspect of the present invention, there is provided a data analysis system including: a processor; a memory, the memory storing a computer program that, when executed by the processor, performs the data analysis method described above.

In another aspect of the present invention, there is provided a computer-readable storage medium having stored therein a computer program which, when executed, implements the above-described data analysis method.

In another aspect of the present invention, there is provided a bolt fastening and analyzing system including: the bolt fastening device as described above; the first mobile terminal receives mechanical parameters reflecting the fastening condition of the bolt to be fastened from the bolt fastening device; the server receives the mechanical parameters from the first mobile terminal; and the second mobile terminal is used for calling the mechanical parameters from the server and executing the data analysis method on the mechanical parameters.

According to the bolt fastening device, the bolt fastening system, the data analysis method and system and the bolt fastening and analysis system, the torque of the hydraulic wrench can be adjusted in real time, the bolt can be fastened accurately, the checking procedure can be omitted, the fastening quality and the fastening efficiency of the bolt can be improved, and the bolt fastening and analysis system can realize the online interaction of data of the bolt to be fastened between constructors and supervisors.

Drawings

The above and other objects and features of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a structural block diagram of a bolt fastening apparatus according to an exemplary embodiment of the present invention;

fig. 2 is a pressure-adjusting schematic diagram of the bolt fastening apparatus shown in fig. 1;

FIG. 3 is a flow chart of a method of data analysis according to an exemplary embodiment of the present invention;

FIG. 4 is a block diagram of a data analysis system according to an exemplary embodiment of the present invention;

FIG. 5 is a block diagram of the structure of a determination module of the data analysis system shown in FIG. 4;

FIG. 6 is a block diagram of a data analysis system according to another exemplary embodiment of the present invention;

FIG. 7 is a block diagram of a bolt tightening and analysis system according to an exemplary embodiment of the present invention;

fig. 8 is a block diagram of a bolt fastening and analyzing system according to an exemplary embodiment of the present invention.

The reference numbers illustrate:

1: a sleeve; 2: a hydraulic wrench; 3: a sensor; 10: a bolt fastening device; 20: a bolt fastening system; 21: a hydraulic pump; 23: a stepping motor; 40: a data analysis system; 41: a mechanical parameter acquisition module; 42: a screening module; 43: a label setting module; 44: a storage module; 45: a determination module; 46: an oil pressure suggestion module; 47: a statistical module; 48: a quality judgment module; 49: a security module; 50: a permission module; 60: a first mobile terminal; 70: a server; 80: and a second mobile terminal.

Detailed Description

Embodiments of the present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. In the drawings, the shape, size, and the like of components may be exaggerated for clarity.

The bolt fastening apparatus and system according to the exemplary embodiment of the present invention may be applied to fastening and inspection of bolts for connecting components of large-scale machines, however, the present invention is not limited thereto, and the bolt fastening apparatus and system may also be applied to fastening and inspection of other fasteners similar to the bolts. For convenience of description, in the following exemplary embodiments, a bolt will be taken as an example of the fastener.

Referring to fig. 1, a bolt fastening device 10 according to an exemplary embodiment of the present invention includes: the sleeve 1 is used for being sleeved on a bolt to be fastened; a hydraulic wrench 2 including a hydraulic pump 21, and the hydraulic wrench 2 is connected to the socket 1 and rotates the socket 1, thereby rotating the bolt to be fastened to perform fastening; the sensor 3 comprises a first sensor arranged on the sleeve 1, and collects mechanical parameters reflecting the fastening condition of the bolt to be fastened in real time during the fastening of the bolt to be fastened; the hydraulic pump 21 is provided with a pressure adjusting unit that adjusts the torque (i.e., the actual output torque) of the hydraulic wrench 2 by adjusting the oil pressure of the hydraulic pump 21. The sleeve 1 is provided with a first communication module and the mechanical parameters can be transmitted via the first communication module.

Preferably, in order to conveniently and accurately achieve the pressure regulation, the pressure regulating part may include a stepping motor 23, and the stepping motor 23 is used to regulate the oil pressure of the hydraulic pump 21 to regulate the torque of the hydraulic wrench 2.

The first sensor may include an angle sensor and an axial force sensor in addition to the torque sensor, and of course, the first sensor may include at least one selected from the group consisting of a torque sensor, an angle sensor and an axial force sensor. Accordingly, the sensor 3 collects in real time mechanical parameters reflecting the fastening condition of the bolt to be fastened during fastening of the bolt to be fastened, which may be at least one of a torque value, a rotation angle value, and an axial force value, and fastening time.

In order to facilitate the installation of the sensors 3, some of the sensors may be installed on the sleeve 1 and the other sensors 3 may be installed on the hydraulic wrench 2, considering that the installation space on the sleeve 1 is limited. Thus, the sensor 3 may also comprise a second sensor arranged on the hydraulic wrench 2. According to one example of the present invention, the first sensor includes at least one of a torque sensor and an axial force sensor, and the second sensor is an angle sensor. As an example, an angle sensor as a second sensor may be mounted on a square drive shaft of the hydraulic wrench 2 connected to the socket 1 to obtain a rotation angle value reflecting a fastening condition of the bolt to be fastened by detecting a rotation angle of the square drive shaft.

Wherein, the pressure adjusting part may include a stepping motor 23, and the stepping motor 23 adjusts the torque of the hydraulic wrench 2 according to the oil pressure for adjusting the hydraulic pump 21. Specifically, the stepping motor 23 is used to adjust the pressure regulating valve of the hydraulic pump 21 to preset the oil pressure of the hydraulic pump 21 to a predetermined percentage of the target oil pressure corresponding to the target mechanical parameter stored in advance, and the hydraulic wrench 2 is started to start fastening the bolt to be fastened.

In the case of fastening a bolt with a hydraulic wrench, the following control method can be employed for the purpose of adjusting the torque of the hydraulic wrench 2. According to an exemplary embodiment of the present invention, there is provided a control method for bolt fastening, the control method including: acquiring real-time mechanical parameters reflecting the fastening condition of a bolt to be fastened; comparing the real-time mechanical parameters with target mechanical parameters to obtain comparison results; the torque of the hydraulic wrench 2 is adjusted based on the comparison result.

Specifically, adjusting the torque of the hydraulic wrench 2 based on the comparison result may include: when the comparison result is that the difference value between the target mechanical parameter and the real-time mechanical parameter is greater than the first preset proportion of the target mechanical parameter, the hydraulic pump 21 of the hydraulic wrench 2 repeatedly executes oil supply and oil return operations to increase the torque of the hydraulic wrench 2 until the difference value is reduced to the first preset proportion of the target mechanical parameter; when the comparison result shows that the difference value is smaller than or equal to a first preset proportion of the target mechanical parameter and larger than a second preset proportion of the target mechanical parameter, the hydraulic pump 21 is enabled to keep the oil supply operation, and the stepping motor 23 of the hydraulic wrench 2 is enabled to adjust the pressure regulating valve of the hydraulic wrench 2 to increase the oil pressure of the hydraulic pump 21 so as to increase the torque of the hydraulic wrench 2 until the difference value is reduced to the second preset proportion of the target mechanical parameter, wherein the second preset proportion is smaller than the first preset proportion; when the difference is within a second predetermined proportion from zero to the target mechanical parameter, the hydraulic wrench 2 is closed, the hydraulic pump 21 is caused to perform oil return operation, and the fastening is finished.

Adjusting the torque of hydraulic wrench 2 based on the comparison may further include: when the comparison result shows that the difference is smaller than or equal to the first predetermined ratio of the target mechanical parameter and larger than the second predetermined ratio of the target mechanical parameter, the stepping motor 23 is caused to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump 21, then, the stepping motor 23 is caused to retract to the initial state while the torque of the hydraulic wrench 2 is not changed, the hydraulic pump 21 is caused to perform one oil return and supply operation while maintaining the oil supply operation, and the stepping motor 23 is caused to adjust the pressure regulating valve again to increase the oil pressure of the hydraulic pump 21 to increase the torque of the hydraulic wrench 2 until the difference is reduced to the second predetermined ratio of the target mechanical parameter.

The real-time mechanical parameter and the target mechanical parameter are the same parameter and include at least one of a torque value, a rotation angle value, and an axis force value.

According to another exemplary embodiment of the present invention, there is provided a bolt fastening system including: the bolt fastening device 10 as described above; and a controller that executes the control method described above.

The controller may be a separate controller independent from the bolt fastening device 10, or may be included in the bolt fastening device 10, and may be implemented to be included in the pressure regulating portion of the hydraulic pump 21, as an example. A specific principle of the bolt fastening device 10 adjusting the oil pressure of the hydraulic pump 21 and the torque of the hydraulic wrench 2 by the pressing portion will be described with reference to fig. 2, taking as an example that the first sensor includes a torque sensor, and both the real-time mechanical parameter and the target mechanical parameter are torque values.

First, the controller 24 controls the stepping motor 23 to adjust the pressure regulating valve of the hydraulic pump 21 to pre-regulate the oil pressure of the hydraulic pump 21 to a predetermined percentage of the target oil pressure corresponding to the target torque value stored in advance, and starts the hydraulic wrench 2 to start bolt fastening (step S100). As an example, in order to secure the voltage regulation accuracy, the predetermined percentage may be set to 96% to 98%.

To facilitate the collection of the torque of the hydraulic wrench 2, the first sensor may comprise a torque sensor. The sensor 3 collects a torque value in real time and transmits the real-time torque value from the socket 1 to the controller 24 through the first communication module, and the controller 24 compares the real-time torque value received from the socket 1 with a preset target torque value and adjusts the oil pressure of the hydraulic pump 21 based on the obtained comparison result to adjust the torque of the hydraulic wrench 2.

The controller 24 controls the hydraulic pump 21 to repeatedly perform the oil supply and oil return operations to increase the torque of the hydraulic wrench 2 until the difference between the target torque value and the immediate torque value is reduced to the first predetermined ratio of the target torque value (steps S110 and S120) when the comparison result is that the difference between the target torque value and the immediate torque value is greater than the first predetermined ratio of the target torque value (i.e., the target torque value-the immediate torque > a% × the target torque value).

The controller 24 controls the hydraulic pump 21 to maintain the oil supply operation (step S130) and controls the stepping motor 23 to adjust the pressure-adjusting valve to increase the oil pressure of the hydraulic pump 21 (step S140) when the difference is less than or equal to the first predetermined ratio of the target torque value and greater than the second predetermined ratio of the target torque value (i.e., a% × the target torque value ≧ the target torque value-the immediate torque ≧ b% × the target torque value) as a result of the comparison, wherein the second predetermined ratio is less than the first predetermined ratio (a% > b%), and controls the stepping motor 23 to increase the oil pressure of the hydraulic pump 21 (step S140) so as to increase the torque of the hydraulic wrench 2 (step S150) until the difference is reduced to the second predetermined ratio.

If the torque of the hydraulic wrench 2 is not increased after the pressure regulating valve is adjusted to increase the oil pressure of the hydraulic pump 21 (step S140), the controller 24 controls the stepping motor 23 to retreat to the initial state and controls the hydraulic pump 21 to perform one oil return, oil supply and oil supply maintaining operation (step S151), and controls the stepping motor 23 again to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump 21 to increase the torque of the hydraulic wrench 2 (return to perform step S140) until the difference is reduced to a second predetermined proportion of the target torque value (step S160).

If the difference is still greater than the second predetermined fraction of the target torque value, the process returns to continue executing steps S140-S160 until the difference is reduced to the second predetermined fraction of the target torque value.

According to an exemplary embodiment of the present invention, the first predetermined ratio a% may be set to 5% and the second predetermined ratio b% may be set to 1%, however, the embodiment of the present invention is not limited thereto, and the values of the first predetermined ratio and the second predetermined ratio may be reasonably changed according to actual construction process standards and requirements. Wherein, the smaller the second predetermined ratio is, the smaller the construction error is, and the higher the fastening quality is. The bolt-tightening apparatus 10 according to the exemplary embodiment of the present invention can make the tightening accuracy higher by the above-described feedback control pressure-regulating operation, and the above-described second predetermined ratio can be 1% or less.

When the difference is within a second predetermined ratio from zero to the target torque value, the controller 24 controls the hydraulic wrench 2 to close, controls the hydraulic pump 21 to perform an oil return operation, and ends the bolt fastening (step S170). When the above difference is within a second predetermined proportion of zero to the target torque value, it indicates that bolt tightening has been completed and oil pressure adjustment has also been completed.

When the bolt fastening and the oil pressure adjustment are completed, the controller 24 may also control the stepping motor 23 to adjust the pressure regulating valve of the hydraulic pump 21 so as to decrease the oil pressure, and in this process, the number of steps taken by the stepping motor 23 is the same as the number of steps taken when the control oil pressure is increased (step S180).

In order to reduce the influence of delay caused by feedback control and improve the control accuracy, the adjustment speed of the stepping motor 23 may be set to be controllable. Preferably, during the oil pressure regulation, the controller 24 controls the stepping motor 23 to decrease the regulation speed of the regulator valve as the difference decreases, the lower the regulation speed as the difference approaches the second predetermined ratio.

According to another exemplary embodiment of the present invention, a data analysis method for analyzing a mechanical parameter reflecting a fastening condition of a bolt to be fastened is provided. The data analysis method comprises the following steps: acquiring mechanical parameters reflecting the fastening condition of a bolt to be fastened (step S200); screening effective mechanical parameters from the mechanical parameters (step S210); based on the effective mechanical parameters, an oil pressure regulation advice of the hydraulic pump 21 is output (step S240).

Referring to fig. 3, according to another exemplary embodiment of the present invention, the data analysis method may further include: acquiring associated information related to the effective mechanical parameters, and setting labels for the effective mechanical parameters based on the associated information (step S220); the valid mechanical parameters for which the tag is set are stored (step S230).

According to an exemplary embodiment of the present invention, the mechanical parameters may be acquired by receiving a user input through a terminal or by receiving the mechanical parameters reflecting the fastening condition of the bolt to be fastened from the sensor 3 installed on the sleeve 1 (step S200).

Generally, bolts are fastened by at least two screwing operations, not by one operation, according to the construction process requirements. Therefore, in the hoisting construction, the hydraulic pump 21 fastens a bolt to be fastened with zero torque to a target torque value through multiple oil supply and oil return processes. During the fastening of the bolt to be fastened, the mechanical parameter is increased from zero to a first value for multiple times along with the fastening time, then returns to the zero value along with the oil return operation of the hydraulic pump 21, and is increased to a second value … … larger than the first value along with the oil re-supply operation of the hydraulic pump 21, so that the oil supply and oil return operations are performed for multiple times until the mechanical parameter is increased to be closest to a preset target mechanical threshold value, so as to finish the fastening. Thus, in step S200, a curve or list of the variation of the mechanical parameters with fastening time may be generated. Specifically, a curve or a list of the change of the mechanical parameter with the fastening time can be generated by using data analysis software such as statistical analysis software or microsoft office software according to the change of the mechanical parameter with the fastening time.

Preferably, after acquiring the mechanical parameters, the effective mechanical parameters may be screened by performing the following operations (step S210): determining the first mechanical parameter as the initial mechanical parameter of the fastening of a bolt to be fastened, and determining the first mechanical parameter closest to a preset target mechanical threshold as the final mechanical parameter of the fastening of the bolt to be fastened; determining a first non-zero mechanical parameter after the mechanical parameter of the bolt to be fastened is finished as the initial mechanical parameter of the next bolt to be fastened, and determining the next mechanical parameter closest to the target mechanical threshold as the mechanical parameter of the next bolt to be fastened; all non-zero mechanical parameters between the mechanical parameters at the beginning of tightening and the mechanical parameters at the end of tightening are screened as valid mechanical parameters. Here, the mechanical parameters acquired at the multiple tightening gaps are zero.

Next, the association information may be acquired by receiving information related to the effective mechanical parameters input by the user through the terminal, and setting tags for the effective mechanical parameters based on the association information (step S220). The associated information may include at least one of wind field information, machine position information, node information, bolt number information, construction party unit information, constructor information, and rating information, so as to combine the corresponding effective mechanical parameters with the corresponding associated information, and store the effective mechanical parameters with the tags in the storage module (step S230).

Considering the pressure loss of the hydraulic pipeline and the hydraulic pump 21, the actual torque value of the hydraulic wrench 2 is usually lower, which results in insufficient pre-tightening force applied to the bolt to be tightened and under-tightening. Therefore, in order to accurately adjust the oil pressure of the hydraulic pump 21 to make the output torque of the hydraulic wrench 2 appropriate, the oil pressure adjustment advice of the hydraulic pump 21 may be output based on the stored effective mechanical parameters (step S240), and the operation may specifically include the steps of: comparing the mechanical parameters of the fastening end of the bolt to be fastened with a preset target mechanical threshold; when the comparison result is that the mechanical parameter of the bolt to be fastened is smaller than a preset target mechanical threshold value, outputting an oil pressure regulation suggestion for increasing the oil pressure; and outputting an oil pressure regulation suggestion for keeping the current oil pressure when the comparison result is that the mechanical parameter of the fastening end of the bolt to be fastened is equal to a preset target mechanical threshold.

In order to accurately determine whether all the bolts to be fastened are fastened, the data analysis method may further include: and counting the number of the bolts to be fastened based on the mechanical parameters of the fastening start or the mechanical parameters of the fastening end. Specifically, the number of mechanical parameters at the start of tightening or at the end of tightening is equal to the number of bolts to be tightened.

In order to judge the fastening quality of the bolt to be fastened, the data analysis method may further include: and calculating the difference value between the mechanical parameter of the bolt to be fastened after fastening and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target mechanical parameter to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result. Specifically, the operation of judging whether the fastening quality of the bolt to be fastened is qualified includes: when the comparison result is that the difference value is within a second preset proportion from zero to the target mechanical parameter, determining that the fastening quality of the bolt to be fastened is qualified; and when the comparison result is that the difference is larger than a second preset proportion of the target mechanical parameters, determining that the fastening quality of the bolt to be fastened is unqualified.

In the inspection of the bolts, the bolts that have been fastened are fastened using the target torque value to perform the inspection. If the bolt itself is fastened in place, it will not rotate; if the bolt is not fastened sufficiently, the bolt can rotate under the action of the target torque value until the received real-time torque value reaches the target torque value. Accordingly, the data analysis method may further include: the calculated difference is stored as the loosening amount of the bolt to be fastened, and the loosening condition of the bolt to be fastened is judged based on the loosening amount, and the judgment result is output. Specifically, the operation of judging the loosening condition of the bolt to be fastened based on the loosening amount includes: when the loosening amount is larger than zero, determining that the bolt to be fastened is loosened; when the loosening amount is equal to zero, it is determined that the bolt to be fastened does not loosen.

According to another exemplary embodiment of the present invention, there is provided a data analysis system 40 implementing the data analysis method described above, the data analysis system 40 may include: a mechanical parameter obtaining module 41, configured to obtain a mechanical parameter that reflects a fastening condition of a bolt to be fastened; the screening module 42 is used for screening effective mechanical parameters from the mechanical parameters; the determination module 45, the determination module 45 includes an oil pressure advising module 46, and the oil pressure advising module 46 is configured to output an oil pressure regulation advising of the hydraulic pump 21 based on the effective mechanical parameter.

Referring to fig. 4, the data analysis system 40 according to an exemplary embodiment of the present invention may further include: a tag setting module 43, configured to obtain associated information related to the effective mechanical parameters, and set a tag for the effective mechanical parameters based on the associated information; and the storage module 44 is used for storing the effective mechanical parameters of the set label. The mechanical parameter acquisition module 41 may acquire the mechanical parameters by receiving user input through a terminal or by receiving mechanical parameters reflecting the fastening condition of the bolt to be fastened from the sensor 3 installed on the sleeve 1.

The screening module 42 is configured to screen the mechanical parameters obtained by the mechanical parameter obtaining module 41 for effective mechanical parameters by performing the following operations: determining the first mechanical parameter as the initial mechanical parameter of the fastening of the bolt to be fastened, and determining the first mechanical parameter closest to the preset target mechanical threshold as the mechanical parameter of the fastening end of the bolt to be fastened; determining a first non-zero mechanical parameter after the mechanical parameter of the bolt to be fastened is finished as the initial mechanical parameter of the next bolt to be fastened, and determining the next mechanical parameter closest to the target mechanical threshold as the mechanical parameter of the next bolt to be fastened; all non-zero mechanical parameters between the mechanical parameters at the beginning of tightening and the mechanical parameters at the end of tightening are screened as valid mechanical parameters.

The tag setting module 43 may obtain the association information by receiving information related to the effective mechanical parameters input by the user through the terminal, and set tags for the effective mechanical parameters screened by the screening module 42 based on the association information, so as to combine the effective mechanical parameters with the corresponding association information, and store the tagged effective mechanical parameters in the storage module 44.

The determination module 45 may make a responsive determination based on the stored effective mechanical parameters and output a corresponding determination result to provide an appropriate reminder or suggestion to facilitate improving the fastening quality of the bolt to be fastened.

According to an example embodiment of the invention, the determination module 45 may include an oil pressure recommendation module 46 for providing an oil pressure adjustment recommendation. The oil pressure advisory module 46 outputs a corresponding oil pressure regulation advisory based on the stored effective mechanical parameters by performing the following: comparing the mechanical parameters of the fastening end of the bolt to be fastened with a preset target mechanical threshold; when the comparison result is that the mechanical parameter of the bolt to be fastened is smaller than a preset target mechanical threshold value, outputting an oil pressure regulation suggestion for increasing the oil pressure; and outputting an oil pressure regulation suggestion for keeping the current oil pressure when the comparison result is that the mechanical parameter of the fastening end of the bolt to be fastened is equal to a preset target mechanical threshold.

Referring to fig. 5, the determination module 45 may further include: a counting module 47, configured to count the number of bolts to be fastened based on the initial fastening mechanical parameter or the fastening mechanical parameter, so as to compare the number with a pre-stored number of bolts to determine whether all the bolts to be fastened are fastened; and the quality judgment module 48 is used for calculating a difference value between the mechanical parameter of the fastening end of the bolt to be fastened and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target torque value to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result.

Specifically, during fastening of the bolt to be fastened, the quality determination module 48 is configured to: when the comparison result is that the difference value is within a second preset proportion from zero to the target torque value, determining that the fastening quality of the bolt to be fastened is qualified; and when the comparison result is that the difference is larger than a second preset proportion of the target torque value, determining that the fastening quality of the bolt to be fastened is unqualified.

The function of the quality judging module 48 according to the exemplary embodiment of the present invention is not limited thereto, and during the inspection of the bolt that has been fastened, the quality judging module 48 may also function to: the calculated difference is stored as the loosening amount of the bolt to be fastened, and the loosening condition of the bolt to be fastened is judged based on the loosening amount, and the judgment result is output. Specifically, when the loosening amount is larger than zero, it is determined that the bolt to be fastened is loosened; when the loosening amount is equal to zero, it is determined that the bolt to be fastened does not loosen.

As shown in fig. 6, in order to secure the safety of the data analysis system, the data analysis system 40 according to another exemplary embodiment of the present invention may further include a safety module 49 for encrypting data including mechanical parameters, effective mechanical parameters, and oil pressure regulation advice. The data analysis system 40 according to another exemplary embodiment of the present invention further comprises a rights module 50 to set different rights for different users, in particular, the rights module 50 is configured to: allowing a first user to access the data analysis system 40 through the terminal, transmit mechanical parameters to the mechanical parameter acquisition module 41, and retrieve effective mechanical parameters from the storage module 44; and/or allowing a second user to access the data analysis system 40 through the terminal and retrieve the effective mechanical parameters from the storage module 44 to set labels for the effective mechanical parameters and retrieve the effective mechanical parameters; and/or allowing a third user to access the data analysis system 40 through a terminal, transmit mechanical parameters with the mechanical parameter acquisition module 41, retrieve effective mechanical parameters from the storage module 44, score the bolt fastening quality, constructors and constructors based on the effective mechanical parameters, set and modify labels, and set and create a first user right and a second user right; and/or allowing a fourth user to set and create third user permissions. The first user mentioned above may be a general user, for example, a construction unit or a constructor of the construction unit; the second user may be a senior user, e.g., a member of an owner's organization or a worker of an owner's organization; the third user may be an administrator, for example, a construction supervision entity or a supervisor of a supervision entity; the fourth user may be a high-level administrator, for example, a developer of the data analysis system.

According to another exemplary embodiment of the present invention, a bolt fastening and analyzing system 20 is provided, referring to fig. 7, the bolt fastening system 20 including the bolt fastening device 10 described above and the data analyzing system 40 described above.

According to another exemplary embodiment of the present invention, there is provided a bolt fastening and analyzing system including: the bolt fastening device 10 as described above; a first mobile terminal 60 that receives from the bolt fastening device 10 a mechanical parameter reflecting a fastening condition of a bolt to be fastened; a server 70 receiving the mechanical parameters from the first mobile terminal 60; the second mobile terminal 80 retrieves the mechanical parameters from the server 70 and performs the data analysis method as described above on the mechanical parameters.

In particular, in order to facilitate the online interaction of data between a constructor and a supervisor, the first mobile terminal and the second mobile terminal may be implemented as portable electronic devices such as smart phones.

According to the bolt fastening device, the data analysis method and system, and the bolt fastening system of the present invention, the bolt can be fastened accurately, and the checking process can be omitted, so that the fastening quality and fastening efficiency of the bolt can be improved.

According to the bolt fastening and analyzing system, the mechanical parameters reflecting the fastening condition of the bolt to be fastened can be comprehensively collected and analyzed, so that the on-line data interaction between constructors and supervisors is realized.

According to the bolt fastening device, the data analysis method and system, the bolt fastening system and the bolt fastening and analysis system, comprehensive data support can be provided, so that accurate fastening and maintenance effects are obtained, and a constructor and a supervisor can adjust the maintenance period in time.

According to another exemplary embodiment of the present invention, there is also provided a data analysis system. The data analysis system includes: a processor and a memory. The memory stores a computer program that, when executed by the processor, performs the data analysis method described above.

Further, it should be understood that the various units in the system according to the exemplary embodiments of the present invention may be implemented as hardware components and/or software components. The individual units may be implemented, for example, using Field Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), depending on the processing performed by the individual units as defined by the skilled person.

Further, the data analysis method according to the exemplary embodiment of the present invention may be implemented as a computer program in a computer-readable storage medium. A person skilled in the art can implement the computer program according to the description of the data analysis method described above. The above-described data analysis method of the present invention is implemented when the computer program is executed in a computer.

Although a few embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents, and that such changes and modifications are intended to be within the scope of the invention.

Claims

1. A bolt-fastening device, characterized in that the bolt-fastening device (10) comprises:

a sleeve (1);

a hydraulic wrench (2), the hydraulic wrench (2) comprising a hydraulic pump (21), and the hydraulic wrench (2) being connected to the sleeve (1) and rotating the sleeve (1);

a sensor (3), wherein the sensor (3) comprises a first sensor arranged on the sleeve (1), and the sensor (3) collects mechanical parameters reflecting the fastening condition of the bolt to be fastened in real time during the fastening of the bolt to be fastened,

wherein the hydraulic pump (21) is provided with a pressure regulating part which regulates the oil pressure of the hydraulic pump (21) based on effective mechanical parameters selected from the mechanical parameters so as to regulate the torque of the hydraulic wrench (2),

wherein the operation of screening out the effective mechanical parameters from the mechanical parameters comprises:

determining a first mechanical parameter as a mechanical parameter at the fastening start of a bolt to be fastened, and determining a first mechanical parameter closest to a preset target mechanical threshold as a mechanical parameter at the fastening end of the bolt to be fastened;

determining a first non-zero mechanical parameter after the mechanical parameter of the bolt to be fastened is finished as a mechanical parameter of the next bolt to be fastened, and determining a next mechanical parameter closest to the target mechanical threshold as a mechanical parameter of the next bolt to be fastened;

and screening all non-zero mechanical parameters between the mechanical parameters at the beginning of fastening and the mechanical parameters at the end of fastening as the effective mechanical parameters.

2. The bolt-fastening device according to claim 1, wherein the pressure-adjusting portion includes a stepping motor (23), and the stepping motor (23) is used to adjust the oil pressure of the hydraulic pump (21) to adjust the torque of the hydraulic wrench (2).

3. A bolt fastening device according to claim 2, wherein the pressure regulating portion comprises a pressure regulating valve, the stepping motor (23) regulates the pressure regulating valve to preset the oil pressure of the hydraulic pump (21) to a predetermined percentage of a target oil pressure corresponding to a pre-stored target mechanical parameter, and the hydraulic wrench (2) is actuated to start fastening the bolt to be fastened.

4. The bolt-fastening apparatus of claim 1, wherein the first sensor comprises at least one of a torque sensor, an angle sensor, and an axial force sensor, and the mechanical parameter comprises at least one of a torque value, a rotation angle value, and an axial force value.

5. Bolt fastening according to claim 1, characterized in that the sensor (3) further comprises a second sensor arranged on the hydraulic wrench (2), wherein the first sensor comprises at least one of a torque sensor and an axial force sensor, the second sensor is an angle sensor, and the mechanical parameter comprises at least one of a torque value, a rotation angle value and an axial force value.

6. A control method for bolt fastening, characterized by comprising:

acquiring real-time mechanical parameters reflecting the fastening condition of a bolt to be fastened;

screening effective mechanical parameters from the real-time mechanical parameters;

comparing the effective mechanical parameters with target mechanical parameters to obtain a comparison result;

adjusting the torque of the hydraulic wrench (2) based on the comparison,

the operation of screening the effective mechanical parameters from the real-time mechanical parameters comprises the following steps:

determining a first real-time mechanical parameter as a real-time mechanical parameter of the fastening start of a bolt to be fastened, and determining a first real-time mechanical parameter closest to a preset target mechanical threshold value as a real-time mechanical parameter of the fastening end of the bolt to be fastened;

determining a first non-zero real-time mechanical parameter after the fastening-finished real-time mechanical parameter of the bolt to be fastened as a fastening-started real-time mechanical parameter of the next bolt to be fastened, and determining a next real-time mechanical parameter closest to the target mechanical threshold value as a fastening-finished real-time mechanical parameter of the next bolt to be fastened;

and screening all non-zero real-time mechanical parameters between the real-time mechanical parameters at the beginning of fastening and the real-time mechanical parameters at the end of fastening as the effective mechanical parameters.

7. The control method according to claim 6, wherein adjusting the torque of the hydraulic wrench (2) based on the comparison result comprises:

when the comparison result is that the difference value between the target mechanical parameter and the effective mechanical parameter is larger than a first preset proportion of the target mechanical parameter, the hydraulic pump (21) of the hydraulic wrench (2) is enabled to repeatedly execute oil supply and oil return operations to increase the torque of the hydraulic wrench (2) until the difference value is reduced to the first preset proportion of the target mechanical parameter;

when the comparison result is that the difference value is smaller than or equal to a first preset proportion of the target mechanical parameter and larger than a second preset proportion of the target mechanical parameter, the hydraulic pump (21) is enabled to keep oil supply operation, and a stepping motor (23) of the hydraulic wrench (2) is enabled to adjust a pressure regulating valve of the hydraulic wrench (2) to increase the oil pressure of the hydraulic pump (21) so as to increase the torque of the hydraulic wrench (2) until the difference value is reduced to the second preset proportion of the target mechanical parameter, wherein the second preset proportion is smaller than the first preset proportion;

and when the difference value is within the second preset proportion of zero to the target mechanical parameter, closing the hydraulic wrench (2), and enabling the hydraulic pump (21) to execute oil return operation, and finishing fastening.

8. The control method according to claim 7, wherein adjusting the torque of the hydraulic wrench (2) based on the comparison further comprises:

when the absolute value of the difference is smaller than or equal to a first preset proportion of a target torque value and larger than a second preset proportion of the target torque value as a result of the comparison, after the stepping motor (23) is made to adjust the pressure regulating valve to increase the oil pressure of the hydraulic pump (21), under the condition that the torque of the hydraulic wrench (2) is not changed, the stepping motor (23) is made to retreat to an initial state, the hydraulic pump (21) is made to perform oil return and supply once and the oil supply operation is kept, and the stepping motor (23) is made to adjust the pressure regulating valve again to increase the oil pressure of the hydraulic pump (21) to increase the torque of the hydraulic wrench (2) until the difference is reduced to the second preset proportion of the target mechanical parameter.

9. The control method according to claim 8, characterized by further comprising: the adjusting speed of the stepping motor (23) for adjusting the pressure regulating valve is reduced along with the reduction of the difference value.

10. The control method of any of claims 6-9, wherein the real-time mechanical parameter and the target mechanical parameter are the same parameter and include at least one of a torque value, a rotation angle value, and an axial force value.

11. A bolt-fastening system, characterized in that it comprises:

bolt fastening device (10) according to any one of claims 1-5; and

a controller that performs the control method of any one of claims 6-10.

12. A data analysis method, characterized in that the data analysis method comprises:

acquiring mechanical parameters reflecting the fastening condition of a bolt to be fastened;

screening out effective mechanical parameters from the mechanical parameters;

outputting an oil pressure regulation recommendation of the hydraulic pump (21) based on the effective mechanical parameter,

13. The data analysis method of claim 12, wherein outputting an oil pressure regulation suggested operation of the hydraulic pump (21) based on the effective mechanical parameter comprises:

comparing the mechanical parameters of the bolt to be fastened after fastening with a preset target mechanical threshold;

when the comparison result shows that the mechanical parameter of the bolt to be fastened is smaller than the preset target mechanical threshold value after fastening is finished, outputting an oil pressure regulation suggestion for increasing the oil pressure;

and outputting an oil pressure regulation suggestion for keeping the current oil pressure when the comparison result shows that the mechanical parameter of the bolt to be fastened after fastening is equal to the preset target mechanical threshold.

14. The data analysis method of claim 12, further comprising: and counting the number of the bolts to be fastened based on the mechanical parameters of the fastening start or the mechanical parameters of the fastening end.

15. The data analysis method of claim 13, further comprising:

and calculating a difference value between the mechanical parameter of the bolt to be fastened after fastening and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target mechanical parameter to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result.

16. The data analysis method according to claim 15, wherein the operation of judging whether the fastening quality of the bolt to be fastened is acceptable includes:

when the comparison result is that the difference value is within a second preset proportion from zero to the target mechanical parameter, determining that the fastening quality of the bolt to be fastened is qualified;

and when the comparison result is that the difference is larger than a second preset proportion of the target mechanical parameter, determining that the fastening quality of the bolt to be fastened is unqualified.

17. The data analysis method of claim 15, further comprising:

and storing the calculated difference value as the loosening amount of the bolt to be fastened, judging the loosening condition of the bolt to be fastened based on the loosening amount, and outputting a judgment result.

18. The data analysis method according to claim 17, wherein the operation of judging the loosening condition of the bolt to be fastened based on the loosening amount includes:

when the loosening amount is larger than zero, determining that the bolt to be fastened is loosened;

and when the loosening amount is equal to zero, determining that the bolt to be fastened does not loosen.

19. The data analysis method of claim 12, further comprising:

acquiring associated information related to the effective mechanical parameters, and setting labels for the effective mechanical parameters based on the associated information;

storing the valid mechanical parameters for which the tag is set,

the related information comprises at least one of wind field information, machine position information, node information, bolt number information, construction party unit information, constructor information and grading information.

20. A data analysis system, characterized in that the data analysis system (40) comprises:

the mechanical parameter acquisition module (41), the mechanical parameter acquisition module (41) is used for acquiring the mechanical parameters reflecting the fastening condition of the bolt to be fastened;

a screening module (42), wherein the screening module (42) is used for screening effective mechanical parameters from the mechanical parameters;

a determination module (45), the determination module (45) comprising an oil pressure recommendation module (46), the oil pressure recommendation module (46) for outputting an oil pressure adjustment recommendation of a hydraulic pump (21) based on the effective mechanical parameter,

wherein the screening module (42) is configured to:

21. The data analysis system of claim 20, wherein the oil pressure advisor module (46) is configured to:

22. The data analysis system of claim 20, wherein the determination module (45) further comprises:

a counting module (47), wherein the counting module (47) is used for counting the number of the bolts to be fastened based on the mechanical parameters of the fastening start or the mechanical parameters of the fastening end so as to compare the number with the pre-stored number of the bolts, and thus determining whether all the bolts to be fastened are fastened; and/or

The quality judgment module (48) is used for calculating a difference value between the mechanical parameter of the bolt to be fastened after fastening and a preset target mechanical threshold, comparing the difference value with a second preset proportion of the target mechanical parameter to judge whether the fastening quality of the bolt to be fastened is qualified or not, and outputting a judgment result.

23. The data analysis system of claim 22, wherein the quality determination module (48) is further configured to:

24. The data analysis system of claim 20, wherein the data analysis system (40) further comprises:

a tag setting module (43), wherein the tag setting module (43) is configured to acquire associated information related to the effective mechanical parameters, and set a tag for the effective mechanical parameters based on the associated information; and/or

A storage module (44), the storage module (44) being configured to store the valid mechanical parameters for which a tag is set; and/or

A safety module (49), the safety module (49) being used for encrypting data comprising mechanical parameters, effective mechanical parameters, oil pressure regulation suggestions; and/or a rights module (50), the rights module (50) being configured to:

allowing a first user to access the data analysis system (40) through a terminal, to transmit mechanical parameters to and from the mechanical parameter acquisition module (41), and to retrieve the effective mechanical parameters from the storage module (44); and/or

Allowing a second user to access the data analysis system (40) through a terminal and retrieve the effective mechanical parameters from the storage module (44) to tag the effective mechanical parameters and retrieve the effective mechanical parameters from the storage module (44); and/or

Allowing a third user to access the data analysis system (40) through a terminal, transmitting mechanical parameters with the mechanical parameter acquisition module (41), retrieving the effective mechanical parameters from the storage module (44), grading bolt fastening quality, constructors and constructors based on the effective mechanical parameters, setting and modifying labels, and setting and creating the first user permission and the second user permission; and/or

And allowing a fourth user to set and create the third user right.

25. A bolt fastening and analysis system, characterized in that the bolt fastening and analysis system (20) comprises a bolt fastening device (10) according to any one of claims 1-5 and a data analysis system (40) according to any one of claims 20-24.

26. A data analysis system, characterized in that the data analysis system comprises:

a processor;

a memory storing a computer program that, when executed by the processor, performs the data analysis method of any one of claims 12-19.

27. A computer-readable storage medium having stored therein a computer program which, when executed, implements the data analysis method of any one of claims 12-19.

28. A bolt fastening and analysis system, comprising:

bolt fastening device (10) according to any one of claims 1-5;

a first mobile terminal (60) that receives, from the bolt fastening device (10), a mechanical parameter reflecting a fastening condition of a bolt to be fastened;

-a server (70) receiving said mechanical parameters from said first mobile terminal (60);

a second mobile terminal (80) retrieving the mechanical parameters from the server (70) and performing the data analysis method of any of claims 12-19 on the mechanical parameters.