Bolt tightening force control device and method based on bolt axial force real-time detection

Abstract

The invention discloses a bolt tightening force control device and method based on bolt axial force real-time detection, and relates to the technical field of bolt tightening. The bolt tightening force control device based on bolt axial force real-time detection comprises the following detection methods that a probe transmits a measurement signal to a signal processing device in real time; the signal processing device judges whether an axial force set value is reached or not, before the axial force set value is reached, the hydraulic pump outputs hydraulic power, the hydraulic wrench drives the nut to rotate, the nut rotates to generate tightening force, meanwhile, the axial force of the bolt is measured in real time, and the hydraulic pump is controlled to stop outputting the hydraulic power till the axial force set value is reached. The hydraulic pump is controlled to drive the hydraulic wrench by directly measuring the axial force, interference factors such as friction force in the rotating process of bolts and nuts are eliminated, control precision and consistency are reliably guaranteed, and therefore real-time measurement of the axial force is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt tightening, and particularly relates to a bolt tightening force control device and method based on real-time detection of bolt axial force. Background Art

[0002] In the prior art, the fastening force converted by controlling the torque is affected by the inherent friction coefficients of materials such as bolts, nuts, and gaskets, and is also affected by multiple factors such as the working site environment temperature and cleanliness. Eventually, the fastening force obtained by the bolt has a large error from the ideal value and poor consistency.

[0003] The bolt axial force (residual stress, fastening force) is converted by the nut overcoming two main frictional forces during rotation through the lead angle of the thread. Since the two frictional forces are affected by many factors, the fastening force obtained by the bolt finally has a large error and poor consistency.

[0004] In another perspective: theoretically, the tightening force generated by the hydraulic wrench driving the nut will be completely converted into the axial tightening force of the bolt. However, in reality, there are frictional forces between the bottom surface of the nut and the gasket or the workpiece to be fastened, as well as between the nut and the bolt during the rotation of the nut. And the frictional forces are affected by many factors, and there are also large differences between different individuals. This results in that even if the torque of the hydraulic wrench driving the nut is constant, the axial tightening force obtained on the bolt finally is not necessarily the same. Summary of the Invention

[0005] The purpose of the present invention is to propose a bolt tightening force control device and method based on real-time detection of bolt axial force in order to solve the above problems.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions: It includes a hydraulic wrench. A rotating shaft is arranged inside the hydraulic wrench. A rotating head is installed at the lower end of the rotating shaft. An auxiliary component is installed inside the rotating head. An installation component is installed at the middle position between the rotating shaft and the rotating head. A detection component is installed inside the installation component. A coating device for cooperating with the detection component is installed inside and at the lower end of the rotating shaft;

[0007] The coating device includes a feed pipe installed at the upper end of the installation component. An electronic valve is arranged inside the feed pipe. The feed pipe is communicated with a coupling agent storage tank through a pipeline. A delivery pump is arranged inside the pipeline. A circular ring is fixedly arranged on the outer wall of the installation component. An annular groove for cooperating with the circular ring is formed on the outer wall of the rotating shaft. A guiding cavity is formed at the lower end of the installation component. A movable pipe is slidably arranged at the lower end of the guiding cavity. A hose is installed inside the guiding cavity. The upper end of the hose is communicated with the annular groove. The lower end of the hose is communicated with the upper end of the movable pipe. A first spring is arranged at the upper end of the movable pipe. A connecting block is fixedly arranged at the lower end of the movable pipe. A pressing rod is installed at the lower end of the connecting block. A rotating cylinder is rotatably installed at the middle position of the connecting block. An L-shaped pipeline is installed on one side of the rotating cylinder. A coating disc is fixedly installed at the end of the L-shaped pipeline;

[0008] In practical applications, when it is necessary to apply the coupling agent, the electronic valve is opened and the delivery pump is started. The delivery pump transports the coupling agent inside the coupling agent storage tank to the pipeline. The coupling agent in the pipeline enters the inside of the feed pipe. The coupling agent inside the feed pipe enters the inside of the annular groove, then enters the inside of the hose from the inside of the annular groove, then enters the inside of the movable pipe from the inside of the hose, then enters the inside of the rotating cylinder from the inside of the movable pipe, then enters the inside of the L-shaped pipeline from the inside of the rotating cylinder, then enters the inside of the coating disc from the inside of the L-shaped pipeline, and finally exits from the through hole at the upper end of the coating disc, so as to apply the surface of the detection component, thus facilitating the staff to apply the coupling agent.

[0009] The bolt tightening force control device based on real-time detection of bolt axial force includes the following detection method: The probe in the detection component transmits the measurement signal to the signal processing device in real time. The signal processing device judges whether the axial force set value is reached. Before the set value is reached, the hydraulic pump outputs hydraulic power, and the hydraulic wrench drives the nut to rotate. The nut rotation generates a tightening force. The probe continuously measures the axial force of the bolt in real time until the axial force set value is reached to control the hydraulic pump to stop outputting hydraulic power;

[0010] In practical applications, the probe measures the axial force in real time. The axial force detection data is transmitted to the signal processing device in real time. The signal processing device processes the signal and compares it with the set value. When the set value is reached, the signal processing device outputs a control signal to the hydraulic pump to stop outputting power to the hydraulic wrench;

[0011] By directly measuring the axial force to control the hydraulic pump to drive the hydraulic wrench, interference factors such as friction during the rotation of the bolt and nut are excluded, and the control accuracy and consistency are reliably guaranteed.

[0012] Further, the detection component includes a wire and a probe, and the wire is connected to an ultrasonic detector;

[0013] The installation component includes a mounting plate fixedly installed on the outer wall of the hydraulic wrench. A guiding cylinder is fixedly installed at the middle position of the mounting plate. An activity cylinder is slidably installed inside the guiding cylinder. A locking cylinder is threadedly connected to the lower end of the activity cylinder. A clamping group is adhered inside the locking cylinder. A threaded disc is threadedly connected to the upper end of the guiding cylinder. A second spring is arranged between the threaded disc and the activity cylinder. The clamping group is composed of two arc-shaped pieces. A rubber ring is arranged at the lower end of the arc-shaped piece. An arc-shaped baffle is fixedly arranged at the upper end of the arc-shaped piece.

[0014] In practical applications, when the bolt enters the rotating head, the rotating head pushes the probe, and the probe pushes the locking cylinder and the activity cylinder. Thus, the activity cylinder compresses the second spring upward, so that the probe is always in contact with the bolt.

[0015] Furthermore, an L-shaped cavity for the rotating cylinder to cooperate with is formed inside the connecting block. An activity groove for the L-shaped pipe to cooperate with is formed at the lower end of the connecting block. One end of the rotating cylinder communicates with the L-shaped cavity. A second gear for cooperating with the pressing rod is fixedly installed at the other end of the rotating cylinder.

[0016] The pressing rod includes guiding plates slidably arranged on both sides of the connecting block. A connecting plate is fixedly arranged at the lower ends of the two guiding plates. A fixing rod is fixedly arranged at the lower end of the connecting plate. Tooth grooves for cooperating with the second gear are formed on the outer wall of one of the guiding plates.

[0017] In practical applications, when the bolt pushes the pressing rod, the guiding plates in the pressing rod move upward. The tooth grooves inside the guiding plates push the second gear to rotate. The second gear drives the rotating cylinder to move. The rotating cylinder drives the L-shaped pipe to move. The L-shaped pipe drives the smearing disc to move, so that the smearing disc is separated from the probe, thus avoiding the smearing disc from blocking the probe from contacting the bolt.

[0018] Furthermore, the rotating shaft includes a cylinder. Teeth are fixedly installed on the outer wall of the cylinder. The teeth are connected to the first gear. The first gear is used in cooperation with the hydraulic drive. A rectangular block is fixedly arranged at the lower end of the cylinder. The rotating head is connected to the rectangular block through a threaded column.

[0019] Furthermore, the auxiliary component includes a plurality of hexagons stacked together. A third spring is fixedly installed at one end of each hexagon. The third spring is fixedly installed at the upper end of the rotating head. The other ends of the hexagons decrease in sequence.

[0020] In practical applications, the auxiliary component includes a plurality of hexagons stacked together. Therefore, this device can be adapted to various different models of nuts for use.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The hydraulic pump is used to drive the hydraulic wrench by directly measuring the axial force, excluding interference factors such as friction during the rotation of the bolt and nut. The control accuracy and consistency are reliably guaranteed, thus enabling the real-time measurement of the axial force.

[0023] When the coupling agent needs to be applied, the solenoid valve opens and the delivery pump starts. The delivery pump transports the coupling agent inside the coupling agent storage tank to the pipeline. The coupling agent in the pipeline enters the inside of the feed pipe. The coupling agent in the feed pipe enters the inside of the annular groove, then enters the inside of the hose from the inside of the annular groove, then enters the inside of the movable pipe from the inside of the hose, then enters the inside of the rotating cylinder from the inside of the movable pipe, then enters the inside of the L-shaped pipe from the inside of the rotating cylinder, then enters the inside of the application disc from the inside of the L-shaped pipe, and finally exits through the through hole at the upper end of the application disc, thereby applying the coupling agent to the surface of the detection component, which facilitates the staff to apply the coupling agent. Brief Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the installation position of the threaded column of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0026] Figure 3 It is a schematic diagram of the auxiliary component of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0027] Figure 4 It is a schematic diagram of the installation position of the auxiliary component of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0028] Figure 5 It is a schematic diagram of the rotating shaft of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0029] Figure 6 It is a schematic diagram of the rotating head of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0030] Figure 7 It is a schematic diagram of the installation component of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0031] Figure 8 It is a schematic diagram of the lower end of the installation component of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0032] Figure 9Schematic diagram of the coating device for the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0033] Figure 10 Schematic diagram of the L-shaped pipe for the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0034] Figure 11 Internal schematic diagram of the connection block for the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention;

[0035] Figure 12 Flow chart of the operation of the bolt tightening force control device and method based on real-time detection of bolt axial force proposed by the present invention.

[0036] In the figure: 1, hydraulic wrench; 2, mounting assembly; 201, mounting plate; 202, threaded disc; 203, second spring; 204, locking cylinder; 205, guiding cylinder; 206, movable cylinder; 207, clamping group; 4, threaded column; 5, rotating shaft; 501, cylinder; 502, teeth; 503, rectangular block; 504, guiding cavity; 6, rotating head; 7, auxiliary assembly; 701, hexahedron; 702, third spring; 8, coating device; 801, feed pipe; 802, circular ring; 803, annular groove; 804, hose; 805, movable pipe; 806, connection block; 8061, movable groove; 8062, L-shaped cavity; 807, pressing rod; 8071, fixed rod; 8072, connecting plate; 8073, guiding plate; 808, rotating cylinder; 8081, gear; 809, L-shaped pipe; 810, coating disc; 811, first spring; 9, detection assembly; 901, wire; 902, probe. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0039] Refer to Figures 1-12, A bolt tightening force control device and method based on real-time detection of bolt axial force, including a hydraulic wrench 1. Inside the hydraulic wrench 1, there is a rotating shaft 5. At the lower end of the rotating shaft 5, a rotating head 6 is installed. Inside the rotating head 6, an auxiliary component 7 is installed. At the middle position between the rotating shaft 5 and the rotating head 6, a mounting component 2 is installed. Inside the mounting component 2, a detection component 9 is installed. Inside and at the lower end of the rotating shaft 5, an application device 8 used in cooperation with the detection component 9 is installed;

[0040] The application device 8 includes a feed pipe 801 installed at the upper end of the mounting component 2. Inside the feed pipe 801, an electronic valve is provided. The feed pipe 801 is connected to a coupling agent storage tank through a pipeline. Inside the pipeline, a delivery pump is provided. On the outer wall of the mounting component 2, a circular ring 802 is fixedly provided. On the outer wall of the rotating shaft 5, an annular groove 803 used in cooperation with the circular ring 802 is provided. At the lower end of the mounting component 2, a guiding cavity 504 is provided. Inside the guiding cavity 504, a movable pipe 805 is slidably provided. Inside the guiding cavity 504, a flexible hose 804 is installed. The upper end of the flexible hose 804 is connected to the annular groove 803, and the lower end of the flexible hose 804 is connected to the upper end of the movable pipe 805. At the upper end of the movable pipe 805, a first spring 811 is provided. At the lower end of the movable pipe 805, a connecting block 806 is fixedly provided. At the lower end of the connecting block 806, a pressing rod 807 is installed. At the middle position of the connecting block 806, a rotating cylinder 808 is rotatably installed. On one side of the rotating cylinder 808, an L-shaped pipe 809 is installed. At the end of the L-shaped pipe 809, an application disc 810 is fixedly installed;

[0041] In actual application, when it is necessary to apply the coupling agent, the electronic valve is opened and the delivery pump is started. The delivery pump transports the coupling agent inside the coupling agent storage tank to the pipeline. The coupling agent in the pipeline enters the inside of the feed pipe 801. The coupling agent inside the feed pipe 801 enters the inside of the annular groove 803, then enters the inside of the flexible hose 804 from the inside of the annular groove 803, then enters the inside of the movable pipe 805 from the inside of the flexible hose 804, then enters the inside of the rotating cylinder 808 from the inside of the movable pipe 805, then enters the inside of the L-shaped pipe 809 from the inside of the rotating cylinder 808, then enters the inside of the application disc 810 from the inside of the L-shaped pipe 809, and finally exits through the through hole at the upper end of the application disc 810, thereby applying to the surface of the detection component 9, thus facilitating the staff to apply the coupling agent.

[0042] The bolt tightening force control device based on real-time detection of bolt axial force includes the following detection method: The probe 902 in the detection component 9 transmits the measurement signal to the signal processing device in real time. The signal processing device judges whether the axial force set value is reached. Before the set value is reached, the hydraulic pump outputs hydraulic power, and the hydraulic wrench 1 drives the nut to rotate. The nut rotation generates a tightening force. The probe 902 continuously measures the axial force of the bolt in real time until the axial force set value is reached to control the hydraulic pump to stop outputting hydraulic power;

[0043] In practical applications, the probe 902 measures the axial force in real time, and the axial force detection data is transmitted to the signal processing device in real time. The signal processing device processes the signal and compares it with the set value. When the set value is reached, the signal processing device outputs a control signal to the hydraulic pump to stop supplying power to the hydraulic wrench.

[0044] By directly measuring the axial force to control the hydraulic pump to drive the hydraulic wrench 1, interference factors such as friction during the rotation of the bolt and nut are excluded, and the control accuracy and consistency are reliably guaranteed.

[0045] Furthermore, the detection assembly 9 includes a wire 901 and a probe 902, and the wire 901 is connected to the ultrasonic detector.

[0046] The installation assembly 2 includes a mounting plate 201 fixedly installed on the outer wall of the hydraulic wrench 1. A guide cylinder 205 is fixedly installed at the middle position of the mounting plate 201. A movable cylinder 206 is slidably installed inside the guide cylinder 205. A locking cylinder 204 is threadedly connected to the lower end of the movable cylinder 206. A clamping group 207 is pasted inside the locking cylinder 204. A threaded disc 202 is threadedly connected to the upper end of the guide cylinder 205. A second spring 203 is arranged between the threaded disc 202 and the movable cylinder 206. The clamping group 207 is composed of two arc-shaped pieces. A rubber ring is arranged at the lower end of the arc-shaped piece. An arc-shaped baffle is fixedly arranged at the upper end of the arc-shaped piece.

[0047] In practical applications, after the bolt enters the rotating head 6, the rotating head 6 pushes the probe 902, and the probe 902 pushes the locking cylinder 204 and the movable cylinder 206. Thus, the movable cylinder 206 compresses the second spring 203 upward, so that the probe 902 is always in contact with the bolt.

[0048] Furthermore, an L-shaped cavity 8062 for using with the rotating cylinder 808 is opened inside the connecting block 806. An activity groove 8061 for using with the L-shaped pipe 809 is opened at the lower end of the connecting block 806. One end of the rotating cylinder 808 communicates with the L-shaped cavity 8062. A second gear 8081 for using with the pressing rod 807 is fixedly installed at the other end of the rotating cylinder 808.

[0049] The pressing rod 807 includes guide plates 8073 slidably arranged on both sides of the connecting block 806. A connecting plate 8072 is fixedly arranged at the lower ends of the two guide plates 8073. A fixed rod 8071 is fixedly arranged at the lower end of the connecting plate 8072. A tooth groove for using with the second gear 8081 is opened on the outer wall of one of the guide plates 8073.

[0050] In practical applications, when the bolt pushes the pressing rod 807, the guide plate 8073 in the pressing rod 807 moves upward, and the tooth groove inside the guide plate 8073 drives the second gear 8081 to rotate. The second gear 8081 drives the rotating cylinder 808 to move, the rotating cylinder 808 drives the L-shaped pipe 809 to move, and the L-shaped pipe 809 drives the coating disc 810 to move, so that the coating disc 810 is separated from the probe 902, thereby preventing the coating disc 810 from blocking the probe 902 from fitting with the bolt.

[0051] Further, the rotating shaft 5 includes a cylinder 501, and the outer wall of the cylinder 501 is fixedly installed with teeth 502. The teeth 502 are connected to the first gear, and the first gear is used in cooperation with the hydraulic drive. A rectangular block 503 is fixedly arranged at the lower end of the cylinder 501, and the rotating head 6 is connected to the rectangular block 503 through a threaded column 4.

[0052] Further, the auxiliary component 7 includes a plurality of stacked hexahedrons 701. One end of each hexahedron 701 is fixedly installed with a third spring 702, and the third spring 702 is fixedly installed at the upper end of the rotating head 6. The other ends of the hexahedrons 701 decrease in sequence.

[0053] Working principle:

[0054] By directly measuring the axial force to control the hydraulic pump to drive the hydraulic wrench 1, interference factors such as friction during the rotation of the bolt and nut are excluded, and the control accuracy and consistency are reliably guaranteed, so that the real-time measurement of the axial force can be realized.

[0055] When it is necessary to apply the coupling agent, the solenoid valve is opened and the delivery pump is started. The delivery pump transports the coupling agent inside the coupling agent storage tank to the pipeline. The coupling agent in the pipeline enters the inside of the feed pipe 801, the coupling agent inside the feed pipe 801 enters the inside of the annular groove 803, then enters the inside of the hose 804 from the inside of the annular groove 803, then enters the inside of the movable pipe 805 from the inside of the hose 804, then enters the inside of the rotating cylinder 808 from the inside of the movable pipe 805, then enters the inside of the L-shaped pipe 809 from the inside of the rotating cylinder 808, then enters the inside of the coating disc 810 from the inside of the L-shaped pipe 809, and finally exits from the through hole at the upper end of the coating disc 810, thereby applying the surface of the detection component 9, making it convenient for the staff to apply the coupling agent.

[0056] When the bolt pushes the pressing rod 807, the guide plate 8073 in the pressing rod 807 moves upward, and the tooth groove inside the guide plate 8073 drives the second gear 8081 to rotate. The second gear 8081 drives the rotating cylinder 808 to move, the rotating cylinder 808 drives the L-shaped pipe 809 to move, and the L-shaped pipe 809 drives the coating disc 810 to move, so that the coating disc 810 is separated from the probe 902, thereby preventing the coating disc 810 from blocking the probe 902 from fitting with the bolt.

[0057] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A bolt tightening force control device and method based on real-time detection of bolt axial force, characterized in that: The hydraulic wrench (1) comprises a rotating shaft (5) disposed inside the hydraulic wrench (1), a rotating head (6) being mounted at the lower end of the rotating shaft (5), an auxiliary component (7) being mounted inside the rotating head (6), a mounting component (2) being mounted at a position intermediate the rotating shaft (5) and the rotating head (6), a detection component (9) being mounted inside the mounting component (2), and a smearing device (8) used in conjunction with the detection component (9) being mounted inside and at the lower end of the rotating shaft (5); The smearing device (8) comprises a feed pipe (801) mounted on the upper end of the mounting assembly (2), an electronic valve is arranged inside the feed pipe (801), the feed pipe (801) is connected to the coupling agent storage tank through a pipeline, a delivery pump is arranged inside the pipeline, a circular ring (802) is fixedly arranged on the outer wall of the mounting assembly (2), an annular groove (803) used to cooperate with the circular ring (802) is arranged on the outer wall of the rotating shaft (5), a guide cavity (504) is arranged at the lower end of the mounting assembly (2), a movable tube (805) is slidably arranged at the lower end of the guide cavity (504), and a A hose (804), the upper end of the hose (804) is connected to the annular groove (803), the lower end of the hose (804) is connected to the upper end of the movable tube (805), the upper end of the movable tube (805) is provided with a first spring (811), the lower end of the movable tube (805) is fixedly provided with a connecting block (806), the lower end of the connecting block (806) is installed with a pressing rod (807), a rotating cylinder (808) is rotatably installed in the middle position of the connecting block (806), an L-shaped pipe (809) is installed on one side of the rotating cylinder (808), and a smear plate (810) is fixedly installed at the end of the L-shaped pipe (809); The bolt tightening force control device based on real-time detection of the bolt axial force comprises the following detection method: the probe (902) in the detection component (9) transmits the measurement signal to the signal processing device in real time, the signal processing device determines whether the axial force setting value is reached, before the setting value is reached, the hydraulic pump outputs hydraulic power, the hydraulic wrench (1) drives the nut to rotate, the nut rotation generates tightening force, and the probe (902) continuously measures the axial force of the bolt in real time until the axial force setting value is reached to control the hydraulic pump to stop outputting hydraulic power.

2. The bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The detection component (9) comprises a wire (901) and a probe (902), and the wire (901) is connected to an ultrasonic detector.

3. The bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The mounting assembly (2) comprises a mounting plate (201) fixedly mounted on the outer wall of the hydraulic wrench (1); a guide cylinder (205) is fixedly mounted in the middle position of the mounting plate (201); a movable cylinder (206) is slidably mounted inside the guide cylinder (205); a locking cylinder (204) is threadedly connected to the lower end of the movable cylinder (206); a clamping group (207) is pasted inside the locking cylinder (204); a threaded disk (202) is threadedly connected to the upper end of the guide cylinder (205); and a second spring (203) is arranged between the threaded disk (202) and the movable cylinder (206).

4. The bolt tightening force control device based on real-time detection of bolt axial force according to claim 3 is characterized in that: The clamping group (207) is composed of two groups of arc-shaped sheets, the lower ends of the arc-shaped sheets are provided with rubber rings, and the upper ends of the arc-shaped sheets are fixedly provided with arc-shaped baffles.

5. The bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The connection block (806) has an L-shaped cavity (8062) formed inside thereof for use with the rotating cylinder (808); a movable groove (8061) formed at the lower end thereof for use with the L-shaped pipe (809); one end of the rotating cylinder (808) is connected to the L-shaped cavity (8062); and a second gear (8081) for use with the pressing rod (807) is fixedly mounted at the other end of the rotating cylinder (808).

6. The bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The pressing rod (807) includes guide plates (8073) slidably arranged on both sides of the connecting block (806), the lower ends of the two guide plates (8073) are fixedly provided with connecting plates (8072), the lower ends of the connecting plates (8072) are fixedly provided with fixing rods (8071), and the outer wall of one of the guide plates (8073) is provided with a tooth groove used to cooperate with the second gear (8081).

7. The method of the bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The rotating shaft (5) comprises a cylinder (501), the outer wall of the cylinder (501) is fixedly provided with teeth (502), the teeth (502) are connected to a first gear, the first gear is used in conjunction with a hydraulic drive, a rectangular block (503) is fixedly provided at the lower end of the cylinder (501), and the rotating head (6) is connected to the rectangular block (503) via a threaded column (4).

8. The method of the bolt tightening force control device based on real-time detection of bolt axial force according to claim 1 is characterized in that: The auxiliary component (7) comprises a plurality of hexagons (701) stacked together, one end of the hexagon (701) being fixedly mounted with a third spring (702), and the other end of the hexagon (701) being gradually reduced.

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