Device for measuring screwing-on and screwing-off torque and measuring method thereof

Abstract

The invention relates to the technical field of torque measurement, in particular to a device for measuring screwing-on and screwing-off torque and a measuring method thereof.The device comprises a supporting base assembly, and an active continuous forward and reverse rotation assembly is arranged at one end of the supporting base assembly and used for firmly clamping an internal thread workpiece and enabling the internal thread workpiece to continuously rotate forwards or reversely; the passive clamping assembly is arranged at the other end of the supporting base assembly and used for firmly clamping the external thread workpiece; the passive clamping assembly comprises a connecting and fixing plate, and the side wall of the connecting and fixing plate is rotationally connected with a clamping mechanism assembly. A first weighing sensor and a second weighing sensor. According to the invention, the measuring shafts of the first weighing sensor and the second weighing sensor are vertically and fixedly connected with the clamping mechanism assembly, so that the torsion measured by the first weighing sensor and the second weighing sensor is always perpendicular to the moment arm, the interference of non-tangential force on the real value of the torsion is reduced, and the accuracy of the measured value of the torsion is improved.

Description

Technical Field

[0001] The invention relates to the technical field of torque measurement, and in particular to a device for measuring make-up and break-out torque and a measuring method thereof. Background Art

[0002] In petroleum operations, there are a large number of operations that require thread make-up and make-out, such as oil, casing, drill pipe, drilling tools, coiled tubing, etc. Existing equipment mostly uses the balanced force method, that is, there is a reaction torque of equal magnitude and opposite direction on the body of the rotating machinery, and the corresponding torque is obtained by measuring the reaction torque.

[0003] In the prior art, in the process of measuring the torque of the make-up and make-down, although some also adopt the method of measuring the torque value through a weighing sensor or a tensile sensor, the torque is usually applied to the make-up and make-down by a wrench, which is manually operated, so that the force applicator cannot always keep the force vertical, resulting in that the torque measured by the sensor cannot be guaranteed to be perpendicular to the force arm at all times, so that the non-tangential force seriously interferes with the true value of the torque, resulting in inaccurate measurement values ​​and low reliability.

[0004] To this end, the present invention proposes a device for measuring make-up and break-out torque and a measuring method thereof to solve the above-mentioned problem. Summary of the invention

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: a device for measuring the make-up and break-out torque, comprising: A support base assembly, one end of which is provided with an active continuous forward and reverse rotation assembly for firmly clamping the internal thread workpiece and causing the internal thread workpiece to continuously rotate forward or reverse; a passive clamping assembly, which is provided at the other end of the support base assembly for firmly clamping the external thread workpiece; The passive clamping assembly comprises: A connecting and fixing plate, wherein the side wall of the connecting and fixing plate is rotatably connected to a clamping mechanism assembly, and the clamping mechanism assembly comprises: The clamping mounting plate is rotatably connected to the side wall of the connecting and fixing plate, and the side wall of the clamping mounting plate is symmetrically provided with straight grooves. Two second bracket plates, the two second bracket plates are symmetrically fixedly connected to the side wall of the connecting and fixing plate, and the side wall arrays of the two second bracket plates are provided with an array of nut grooves; A first weighing sensor and a second weighing sensor, wherein the first weighing sensor and the second weighing sensor are respectively fixedly connected to the bottom end and the top end of the two second bracket plates by bolts, and the measuring axes of the first weighing sensor and the second weighing sensor pass through the through hole and the straight groove on the connecting and fixing plate body and are vertically fixedly connected to the clamping mounting plate through the cover plate; Specifically, in the prior art, due to manual operation, the force applicator cannot always maintain vertical force application, resulting in the torque measured by the sensor being unable to be guaranteed to be vertical to the force arm at all times, causing the non-tangential force to seriously interfere with the true value of the torque, resulting in inaccurate measurement values ​​and low reliability. This technical solution can solve the above problems, and the specific operations are as follows: First, the internal thread workpiece is clamped by the active continuous forward and reverse assembly, and the external thread workpiece is clamped by the passive clamping assembly at the same time, and then the active continuous forward and reverse assembly is started to rotate forward or reverse, so that the external thread workpiece and the internal thread workpiece can be connected or separated; When the active continuous forward and reverse assembly rotates forward or reversely, the internal thread workpiece rotates, and under the action of the threaded connection, the external thread workpiece has a tendency to rotate; Since the clamping mechanism assembly is rotatably connected to the connecting and fixing plate, the clamping mechanism assembly has a tendency to rotate, thereby acting on the first weighing sensor and the second weighing sensor; The torque F and the torque F are measured by the first load cell and the second load cell. At this time, the torque F is the sum of the measured values ​​of the first load cell and the second load cell. Since the measuring axes of the first load cell and the second load cell are respectively vertically fixedly connected to the clamping mechanism assembly, the torque measured by the first load cell and the second load cell is always vertical to the force arm, thereby reducing the interference of non-tangential force on the true value of the torque, thereby improving the accuracy of the torque measurement value; At the same time, since the first load cell and the second load cell are symmetrically arranged on the right side wall of the connecting fixing plate, the force arm d is equal to half of the diameter of the first load cell and the second load cell, that is, the radius R, and the rotation torque M=(F+F)×R; And by adjusting the first load cell and the second load cell at different positions of the second bracket plate, different force arms d can be obtained. Under the condition that the rotational torque remains unchanged, different rotational torques can be calculated according to M=(F+F)×R. When the force arm increases or decreases by a certain multiple, the rotational torque increases by a certain multiple simultaneously. The accuracy of torque measurement can be improved by analyzing multiple data.

[0006] Preferably, a plurality of first cylinders are fixedly connected to the inner side wall array of the clamping mounting plate, and the bottom ends of the telescopic rods of the plurality of first cylinders are fixedly connected to the first clamping blocks.

[0007] Preferably, it also includes: Two first bracket plates, the two first bracket plates are symmetrically fixedly connected to the outer side wall of the connecting and fixing plate; Two second cylinders, the two second cylinders are symmetrically fixedly connected to the side walls of the two first bracket plates, the ends of the telescopic rods of the two second cylinders are fixedly connected to a U-shaped mounting frame, the inner side wall of the U-shaped mounting frame is rotatably connected to a rotating roller, the two rotating rollers are in contact with the externally threaded workpiece, and the inner side wall of the U-shaped mounting frame is provided with a speed sensor, and the speed sensor is used to detect the speed of the rotating roller.

[0008] Preferably, a sawtooth block is fixedly connected to the end surface of the first clamping block.

[0009] Preferably, the first weighing sensor and the second weighing sensor are both shear beam weighing sensors.

[0010] In order to solve the above problems, the present invention also proposes a method for measuring the make-up and break-out torque; include: S1: First, the internal thread workpiece is clamped by the active continuous forward and reverse assembly, and the external thread workpiece is clamped by the passive clamping assembly; S2: Start the active continuous forward and reverse assembly to rotate forward or reverse, so as to connect or separate the external thread workpiece and the internal thread workpiece; S3: measuring the torque F1 and the torque F2 by the first load cell and the second load cell; S4: Measure the radius R of the first load cell and the second load cell, and calculate the rotation torque according to M=(F1+F2)×R.

[0011] Also includes: S301: deriving R by adjusting the positions of the first weighing sensor and the second weighing sensor on the second bracket plate; S302: Calculate the rotation torque M according to M=(F1+F2)×R to analyze multiple data to improve the accuracy of torque measurement.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention arranges the measuring axes of the first weighing sensor and the second weighing sensor to be vertically fixedly connected to the clamping mechanism assembly 230 respectively, so that the torque measured by the first weighing sensor and the second weighing sensor is always perpendicular to the force arm at all times, reducing the interference of non-tangential force on the true value of the torque, thereby improving the accuracy of the torque measurement value.

[0013] 2. The present invention sets a plurality of nut grooves. During the measurement process, different force arms d are obtained by adjusting the first load cell and the second load cell at different positions on the second bracket plate. Under the condition that the rotational torque remains unchanged, different rotational torques are calculated according to M=(F1+F2)×R. When the force arm increases or decreases by a certain multiple, the rotational torque increases by a certain multiple simultaneously. The accuracy of torque measurement is improved by analyzing multiple data.

[0014] 3. The present invention detects the rotation speed of the external threaded workpiece by setting a rotating roller and a rotation speed sensor. When the external threaded workpiece does not rotate, the value detected by the rotation speed sensor is zero. When the value detected by the rotation speed sensor increases, it indicates that the external threaded workpiece rotates. The rotation of the external threaded workpiece will cause the F1 and F2 values ​​measured by the first weighing sensor and the second weighing sensor to decrease. At this time, the first cylinder should be started to further clamp the external threaded workpiece to stop the rotation of the external threaded workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The overall structure of the passive clamping assembly of the present invention is schematically shown in FIG. Figure 1 ; Figure 3 The overall structure of the passive clamping assembly of the present invention is schematically shown in FIG. Figure 2 ; Figure 4 The overall structure of the passive clamping assembly of the present invention is schematically shown in FIG. Figure 3 ; Figure 5 It is a schematic diagram of the connection between the first cylinder and the first clamping block of the present invention; Figure 6 A three-dimensional diagram of a clamping mounting plate in the present invention; Figure 7 A three-dimensional diagram of a connecting and fixing plate in the present invention; Figure 8 It is a schematic diagram of the connection between the second cylinder and the U-shaped mounting frame in the present invention; Fig. 9 The torque measurement method process of the present invention is Figure 1 ; Fig.10 The torque measurement method process of the present invention is Figure 2 .

[0016] In the figure: support base assembly 300, active continuous forward and reverse rotation assembly 100, external thread workpiece 901, internal thread workpiece 902, passive clamping assembly 200, connecting fixing plate 201, through hole 201-1, first weighing sensor 220-1, second weighing sensor 220-2, first bracket plate 205, bolt 205-1, nut groove 205-2, second bracket plate 206, clamping mechanism assembly 230, clamping mounting plate 230-1, first cylinder 230-2, first clamping block 230-3, straight groove 230-4, serrated block 230-5, second cylinder 240, U-shaped mounting frame 240-1, rotating roller 240-2, speed sensor 240-3. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] like Figures 1 to 8 A device for measuring the make-up and break-out torque is shown, comprising: A support base assembly 300, one end of which is provided with an active continuous forward and reverse assembly 100 for firmly clamping the internal thread workpiece 902 and making the internal thread workpiece 902 continuously forward or reverse; Passive clamping assembly 200, which is disposed at the other end of the support base assembly 300 and is used to firmly clamp the external threaded workpiece 901; The passive clamping assembly 200 includes: A connecting and fixing plate 201, a side wall of the connecting and fixing plate 201 is rotatably connected with a clamping mechanism assembly 230; The first weighing sensor 220-1 and the second weighing sensor 220-2 are symmetrically arranged on the right side wall of the connecting and fixing plate 201, and the measuring axes of the first weighing sensor 220-1 and the second weighing sensor 220-2 pass through the through hole 201-1 on the connecting and fixing plate 201 body and are vertically fixedly connected to the clamping mechanism assembly 230 through the cover plate; Specifically, in the prior art, due to manual operation, the force applicator cannot always maintain vertical force application, resulting in the torque measured by the sensor being unable to be guaranteed to be vertical to the force arm at all times, causing the non-tangential force to seriously interfere with the true value of the torque, resulting in inaccurate measurement values ​​and low reliability. This technical solution can solve the above problems, and the specific operations are as follows: First, the internal thread workpiece 902 is clamped by the active continuous forward and reverse rotation assembly 100, and the external thread workpiece 901 is clamped by the passive clamping assembly 200. Then, the active continuous forward and reverse rotation assembly 100 is started to rotate forward or reverse, so that the external thread workpiece 901 and the internal thread workpiece 902 can be connected or separated. When the active continuous forward and reverse rotation assembly 100 rotates forward or reversely, the internal thread workpiece 902 rotates, and under the action of the threaded connection, the external thread workpiece 901 has a rotation tendency; Since the clamping mechanism assembly 230 is rotatably connected to the connecting and fixing plate 201, the clamping mechanism assembly 230 has a rotation tendency at this time, thereby acting on the first weighing sensor 220-1 and the second weighing sensor 220-2; The torque F1 and the torque F2 are measured by the first weighing sensor 220-1 and the second weighing sensor 220-2. At this time, the torque F is the sum of the measured values ​​of the first weighing sensor 220-1 and the second weighing sensor 220-2. Since the measuring axes of the first weighing sensor 220-1 and the second weighing sensor 220-2 are respectively vertically fixedly connected to the clamping mechanism assembly 230, the torque measured by the first weighing sensor 220-1 and the second weighing sensor 220-2 is always vertical to the force arm, reducing the interference of non-tangential force on the true value of the torque, thereby improving the accuracy of the torque measurement value; And since the first weighing sensor 220-1 and the second weighing sensor 220-2 are symmetrically arranged on the right side wall of the connecting fixing plate 201, at this time, the force arm d is equal to half of the diameter of the first weighing sensor 220-1 and the second weighing sensor 220-2, that is, the radius R, then the rotational torque M=(F1+F2)×R.

[0019] As a further embodiment of the present invention, the clamping mechanism assembly 230 includes: A clamping mounting plate 230-1, the clamping mounting plate 230-1 is rotatably connected to the side wall of the connecting and fixing plate 201, a plurality of first cylinders 230-2 are fixedly connected to the inner side wall array of the clamping mounting plate 230-1, and the bottom ends of the telescopic rods of the plurality of first cylinders 230-2 are fixedly connected to the first clamping blocks 230-3; Specifically, the externally threaded workpiece 901 is clamped by providing the first cylinder 230 - 2 and the first clamping block 230 - 3 .

[0020] It should be further explained that: the active continuous forward and reverse rotation assembly 100 is also provided with the same clamping component as described above to achieve clamping of the internal thread workpiece 902 .

[0021] As a further embodiment of the present invention, it also includes: Two first bracket plates 205, the two first bracket plates are symmetrically fixedly connected to the outer side wall of the connecting and fixing plate 201; Two second bracket plates 206, the two second bracket plates are symmetrically fixedly connected to the outer side wall of the connecting and fixing plate 201; The first weighing sensor 220-1 and the second weighing sensor 220-2 are respectively fixedly connected to the bottom end and the top end of the two second bracket plates 206 by bolts 205-1; Also includes: The side wall of the clamping mounting plate 230-1 is symmetrically provided with straight grooves 230-4, and the measuring axes of the first weighing sensor 220-1 and the second weighing sensor 220-2 respectively pass through the straight grooves 230-4 and are fixedly connected to the clamping mounting plate 230-1 through the cover plate; The sidewall arrays of the two second bracket plates 206 are provided with a plurality of nut slots 205-2. By adjusting the first load cell 220-1 and the second load cell 220-2 at different positions of the second bracket plate 206 and fixing them by bolts 205-1 and nut slots 205-2, different force arms d can be measured, thereby obtaining different rotation torques. Specifically, a plurality of nut slots 205-2 are arranged in an array. During the measurement process, different force arms d are obtained by adjusting the first load cell 220-1 and the second load cell 220-2 at different positions on the second bracket plate 206. When the rotational torque remains unchanged, different rotational torques are calculated according to M=(F1+F2)×R. When the force arm increases or decreases by a certain multiple, the rotational torque increases by a certain multiple simultaneously. The accuracy of torque measurement is improved by analyzing multiple data.

[0022] As a further embodiment of the present invention, two second cylinders 240 are symmetrically fixedly connected to the side walls of the two first bracket plates 205, the ends of the telescopic rods of the two second cylinders 240 are fixedly connected with a U-shaped mounting frame 240-1, the inner wall of the U-shaped mounting frame 240-1 is rotatably connected with a rotating roller 240-2, the two rotating rollers 240-2 are in contact with the external threaded workpiece 901, and the inner wall of the U-shaped mounting frame 240-1 is provided with a speed sensor 240-3, and the speed sensor 240-3 is used to detect the speed of the rotating roller 240-2; Specifically, a rotating roller 240-2 and a speed sensor 240-3 are provided to detect the rotation speed of the externally threaded workpiece 901. When the externally threaded workpiece 901 does not rotate, the value detected by the speed sensor 240-3 is zero. When the value detected by the speed sensor 240-3 increases, it indicates that the externally threaded workpiece 901 rotates. The rotation of the externally threaded workpiece 901 will cause the F1 and F2 values ​​measured by the first weighing sensor 220-1 and the second weighing sensor 220-2 to decrease. At this time, the first cylinder 230-2 should be started to further clamp the externally threaded workpiece 901 to stop the rotation of the externally threaded workpiece 901.

[0023] As a further implementation scheme of the present invention, a serrated block 230-5 is fixedly connected to the end face of the first clamping block 230-3. By providing the serrated block, the roughness of the surface of the first clamping block 230-3 is increased, thereby improving the clamping strength of the externally threaded workpiece 901, which is beneficial to prevent the externally threaded workpiece 901 from rotating, thereby improving the stability of the F1 and F2 values ​​measured by the first weighing sensor 220-1 and the second weighing sensor 220-2.

[0024] As a further implementation scheme of the present invention, the first weighing sensor 220-1 and the second weighing sensor 220-2 are both shear beam weighing sensors, which further eliminate the interference of non-tangential forces on the measured torque value.

[0025] like Figures 9 and 10 ,In order to solve the above problems, the present invention also proposes a method for measuring the make-up and break-out torque; include: S1: First, the internal thread workpiece 902 is clamped by the active continuous forward and reverse rotation assembly 100, and the external thread workpiece 901 is clamped by the passive clamping assembly 200; S2: When the active continuous forward and reverse rotation assembly 100 is started to rotate forward or reverse, the external thread workpiece 901 and the internal thread workpiece 902 can be connected or separated; S3: measuring the torque F1 and the torque F2 by the first load cell 220 - 1 and the second load cell 220 - 2 ; S4: Measure the radius R of the first load cell 220 - 1 and the second load cell 220 - 2 , and calculate the rotation torque according to M=(F1+F2)×R.

[0026] Also includes: S301: deriving R1 by adjusting the positions of the first weighing sensor 220 - 1 and the second weighing sensor 220 - 2 on the second bracket plate 206 ; S302: Calculate the rotation torque M1 according to M=(F1+F2)×R to improve the accuracy of torque measurement by analyzing multiple data.

[0027] Working principle of the present invention: First, the internal thread workpiece 902 is clamped by the active continuous forward and reverse rotation assembly 100, and the external thread workpiece 901 is clamped by the passive clamping assembly 200. Then, the active continuous forward and reverse rotation assembly 100 is started to rotate forward or reverse, so that the external thread workpiece 901 and the internal thread workpiece 902 can be connected or separated. When the active continuous forward and reverse rotation assembly 100 rotates forward or reversely, the internal thread workpiece 902 rotates, and under the action of the threaded connection, the external thread workpiece 901 has a rotation tendency; Since the clamping mechanism assembly 230 is rotatably connected to the connecting and fixing plate 201, the clamping mechanism assembly 230 has a rotation tendency at this time, thereby acting on the first weighing sensor 220-1 and the second weighing sensor 220-2; The torque F1 and the torque F2 are measured by the first weighing sensor 220-1 and the second weighing sensor 220-2. At this time, the torque F is the sum of the measured values ​​of the first weighing sensor 220-1 and the second weighing sensor 220-2. Since the measuring axes of the first weighing sensor 220-1 and the second weighing sensor 220-2 are respectively vertically fixedly connected to the clamping mechanism assembly 230, the torque measured by the first weighing sensor 220-1 and the second weighing sensor 220-2 is always vertical to the force arm, reducing the interference of non-tangential force on the true value of the torque, thereby improving the accuracy of the torque measurement value; At the same time, since the first weighing sensor 220-1 and the second weighing sensor 220-2 are symmetrically arranged on the right side wall of the connecting fixing plate 201, the force arm d is equal to half of the diameter of the first weighing sensor 220-1 and the second weighing sensor 220-2, that is, the radius R, and the rotation torque M=(F1+F2)×R; And by adjusting the first weighing sensor 220-1 and the second weighing sensor 220-2 at different positions of the second bracket plate 206, different force arms d can be obtained. When the rotational torque remains unchanged, different rotational torques can be calculated according to M=(F1+F2)×R. When the force arm increases or decreases by a certain multiple, the rotational torque also increases by a certain multiple at the same time. By analyzing multiple data, the accuracy of torque measurement can be improved.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A device for measuring make-up and make-out torque, characterized in that: include: A support base assembly (300), wherein one end of the support base assembly (300) is provided with an active continuous forward and reverse rotation assembly (100) for firmly clamping the internal thread workpiece (902) and causing the internal thread workpiece (902) to continuously rotate forward or reverse; and a passive clamping assembly (200), wherein the passive clamping assembly (200) is provided at the other end of the support base assembly (300) and is used for firmly clamping the external thread workpiece (901); The passive clamping assembly (200) comprises: A connecting and fixing plate (201), wherein a side wall of the connecting and fixing plate (201) is rotatably connected to a clamping mechanism assembly (230), wherein the clamping mechanism assembly (230) comprises: A clamping installation plate (230-1), the clamping installation plate (230-1) being rotatably connected to a side wall of the connecting and fixing plate (201), and the side wall of the clamping installation plate (230-1) being symmetrically provided with straight grooves (230-4). Two second bracket plates (206), the two second bracket plates (206) being symmetrically fixedly connected to the side wall of the connecting and fixing plate (201), and the side walls of the two second bracket plates (206) being provided with an array of nut grooves (205-2); A first weighing sensor (220-1) and a second weighing sensor (220-2), wherein the first weighing sensor (220-1) and the second weighing sensor (220-2) are respectively fixedly connected to the bottom end and the top end of two second bracket plates (206) by bolts (205-1), and the measuring axes of the first weighing sensor (220-1) and the second weighing sensor (220-2) pass through the through hole (201-1) and the straight groove (230-4) on the connecting and fixing plate (201) body and are then vertically fixedly connected to the clamping mounting plate (230-1) by a cover plate.

2. The device for measuring the make-up and break-out torque according to claim 1, characterized in that: The inner side wall array of the clamping installation plate (230-1) is fixedly connected to a plurality of first cylinders (230-2), and the bottom ends of the telescopic rods of the plurality of first cylinders (230-2) are fixedly connected to a first clamping block (230-3).

3. The device for measuring the make-up and break-out torque according to claim 2, characterized in that: Also includes: Two first bracket plates (205), the two first bracket plates (205) are symmetrically fixedly connected to the outer side wall of the connecting and fixing plate (201); Two second cylinders (240), the two second cylinders (240) are symmetrically fixedly connected to the side walls of the two first bracket plates (205), the ends of the telescopic rods of the two second cylinders (240) are fixedly connected to a U-shaped mounting frame (240-1), the inner wall of the U-shaped mounting frame (240-1) is rotatably connected to a rotating roller (240-2), the two rotating rollers (240-2) are in contact with the external threaded workpiece (901), and the inner wall of the U-shaped mounting frame (240-1) is provided with a rotation speed sensor (240-3), and the rotation speed sensor (240-3) is used to detect the rotation speed of the rotating roller (240-2).

4. The device for measuring the make-up and break-out torque according to claim 3, characterized in that: The end surface of the first clamping block (230-3) is fixedly connected to a sawtooth block (230-5).

5. The device for measuring the make-up and break-out torque according to claim 4, characterized in that: The first weighing sensor (220-1) and the second weighing sensor (220-2) are both shear beam type weighing sensors.

6. A method for measuring make-up and make-out torque, applicable to the device for measuring make-up and make-out torque according to claim 5, characterized in that: include: S1: First, the internal thread workpiece (902) is clamped by the active continuous forward and reverse rotation assembly (100), and at the same time, the external thread workpiece (901) is clamped by the passive clamping assembly (200); S2: starting the active continuous forward and reverse rotation assembly (100) to rotate forward or reverse, thereby connecting or disconnecting the external thread workpiece (901) and the internal thread workpiece (902); S3: measuring the torque F1 and the torque F2 by means of the first weighing sensor (220-1) and the second weighing sensor (220-2); S4: Measure the radius R of the first load cell (220-1) and the second load cell (220-2), and calculate the rotation torque according to M=(F1+F2)×R.

7. A method for measuring make-up and break-out torque according to claim 6, characterized in that: Also includes: S301: deriving R1 by adjusting the positions of the first weighing sensor (220-1) and the second weighing sensor (220-2) on the second bracket plate (206); S302: Calculate the rotation torque M1 according to M=(F1+F2)×R to improve the accuracy of torque measurement by analyzing multiple data.

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