Auxiliary calibration device

Abstract

The utility model discloses an auxiliary calibration device, comprising a frame assembly provided with an installation part used for installing a tested tension and pressure sensor; the two-way hydraulic cylinder is arranged on the frame assembly, and the two-way hydraulic cylinder is provided with a telescopic end; and the force measuring sensor is respectively connected with the telescopic end and the measured tension and pressure sensor so as to calibrate the measured tension and pressure sensor. According to the utility model, the bidirectional hydraulic cylinder is utilized to apply an acting force to the tested tension and pressure sensor, compared with a scheme of applying a pressure by rotating a threaded column in the related technology, the bidirectional hydraulic cylinder is simple to operate, the calibration efficiency is improved, and the bidirectional hydraulic cylinder applies the acting force bidirectionally, so that more requirements can be met; large acting force can be conveniently applied through the hydraulic effect.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling, and in particular to an auxiliary calibration device. Background Art

[0002] In the related art, tension and pressure sensors are used to detect the magnitude of the force applied to an object. Tensile and pressure sensors usually need to be calibrated. Calibration refers to the process of calibrating and verifying the measurement system to ensure the accuracy and reliability of the measurement data. However, the auxiliary calibration device in the related art is cumbersome to operate. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an auxiliary calibration device to simplify the operation steps.

[0004] According to the auxiliary calibration device of the embodiment of the utility model, it includes: a frame assembly, the frame assembly is provided with a mounting portion, the mounting portion is used to install the tensile pressure sensor to be measured; a bidirectional hydraulic cylinder, the bidirectional hydraulic cylinder is arranged on the frame assembly, the bidirectional hydraulic cylinder has a telescopic end; a force sensor, the force sensor is respectively connected to the telescopic end and the tensile pressure sensor to be measured, so as to calibrate the tensile pressure sensor to be measured.

[0005] According to the auxiliary calibration device of the embodiment of the utility model, a bidirectional hydraulic cylinder is used to apply a force to the tensile and pressure sensors to be measured. Compared with the solution of rotating a threaded column to apply pressure in the related art, the bidirectional hydraulic cylinder is easy to operate and improves the calibration efficiency. At the same time, the bidirectional hydraulic cylinder applies force in both directions, which can adapt to more needs and use hydraulic action to more conveniently apply a larger force.

[0006] In some embodiments, the bidirectional hydraulic cylinder includes: a cylinder body; a force-applying member, the force-applying member having a first part and a second part, the first part being arranged in the cylinder body, the first part and the inner wall of the cylinder body jointly defining a first pressure space and a second pressure space, the first pressure space and the second pressure space being located on opposite sides of the first part, the second part being arranged in the first part and extending outside the cylinder body, and an end of the second part away from the first part being constructed as the telescopic end.

[0007] In some embodiments, the cylinder body is provided with a first through hole and a second through hole which are spaced apart from each other, the first through hole is connected to the first pressure space, and the second through hole is connected to the second pressure space.

[0008] In some embodiments, at least one of the mounting portion and the bidirectional hydraulic cylinder is movably disposed on the frame assembly to adjust the distance between the mounting portion and the bidirectional hydraulic cylinder.

[0009] In some embodiments, the frame assembly includes: a base, the mounting portion is disposed on the base; a column, the column is disposed on the base, a movable first mounting plate is disposed on the column, and the bidirectional hydraulic cylinder is disposed on the first mounting plate.

[0010] In some embodiments, the column portion is configured as a threaded portion, the threaded portion is provided with a first adjusting nut and a second adjusting nut, the first mounting plate is located above the first adjusting nut, and the second adjusting nut is provided above the first mounting plate.

[0011] In some embodiments, another part of the column is constructed as a support portion, the support portion is arranged below the threaded portion, the diameter of the support portion is larger than the inner diameter of the threaded portion, and the support portion is suitable for stopping the first adjusting nut.

[0012] In some embodiments, the frame assembly includes: a base; a positioning plate, a first connecting member is provided on the positioning plate, the first connecting member is connected to the base, a mounting hole is provided on the positioning plate, the mounting hole is configured as the mounting portion, a second connecting member is provided in the mounting hole, and the second connecting member is used to connect the tensile and pressure sensor to be measured; wherein, there are multiple mounting holes, and the multiple mounting holes are circumferentially spaced around the central axis of the positioning plate.

[0013] In some embodiments, the plurality of mounting holes include a first mounting hole and a second mounting hole, a diameter of the second mounting hole is larger than a diameter of the first mounting hole, and the first mounting hole is disposed on an inner side of the second mounting hole.

[0014] In some embodiments, the plurality of mounting holes further include a third mounting hole, the diameter of the third mounting hole being smaller than the diameter of the second mounting hole, the third mounting hole and the second mounting hole being equidistant from the center axis, and the third mounting hole being disposed between two adjacent second mounting holes.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A cross-sectional view of the auxiliary calibration device in the embodiment of the utility model Figure 1 ;

[0018] Figure 2A cross-sectional view of the auxiliary calibration device in the embodiment of the utility model Figure 2 ;

[0019] Figure 3 This is an appearance diagram of the auxiliary calibration device in the embodiment of the utility model;

[0020] Figure 4 for Figure 2 A top view of the center positioning plate;

[0021] Figure 5 It is a distribution diagram of the first through hole, the second through hole and the third through hole in the embodiment of the utility model.

[0022] Reference numerals:

[0023] 100. Auxiliary calibration device;

[0024] 10. Frame assembly; 12. Base; 13. Column; 131. First mounting plate; 132. Threaded portion; 1321. First adjusting nut; 1322. Second adjusting nut; 133. Support portion; 14. Positioning plate; 141. First connecting member; 142. Mounting hole; 1421. First mounting hole; 1422. Second mounting hole; 1423. Third mounting hole;

[0025] 20. Bidirectional hydraulic cylinder; 21. Telescopic end; 22. Cylinder body; 221. First pressure space; 222. Second pressure space; 223. First through hole; 224. Second through hole; 23. Force-applying member; 231. First part; 232. Second part; 30. Force sensor; 200. Measured tensile pressure sensor. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0030] Reference below Figure 1-Figure 5 An auxiliary calibration device 100 according to an embodiment of the present utility model is described.

[0031] Reference Figure 1 According to an embodiment of the present utility model, an auxiliary calibration device 100 includes: a frame assembly 10, a bidirectional hydraulic cylinder 20 and a force sensor 30.

[0032] The frame assembly 10 is provided with a mounting portion for mounting the measured tensile pressure sensor 200. The bidirectional hydraulic cylinder 20 is provided on the frame assembly 10, and the bidirectional hydraulic cylinder 20 has a telescopic end 21. The force sensor 30 is respectively connected to the telescopic end 21 and the measured tensile pressure sensor 200 to calibrate the measured tensile pressure sensor 200.

[0033] Among them, the tensile pressure sensor 200 under test is the object under test, and the tensile pressure sensor 200 under test is fixed on the mounting part to facilitate subsequent operations. The force sensor 30 is installed between the bidirectional hydraulic cylinder 20 and the tensile pressure sensor 200 under test. The force sensor 30 is used to detect the force applied by the bidirectional hydraulic cylinder 20 to the tensile pressure sensor 200 under test, so as to facilitate the adjustment of the tensile pressure sensor 200 under test, realize the calibration of the tensile pressure sensor 200 under test, and complete the calibration.

[0034] In the related art, tension and pressure sensors are used to detect the magnitude of the force acting on an object. Tensile and pressure sensors usually need to be calibrated. Calibration refers to the process of calibrating and verifying the measurement system to ensure the accuracy and reliability of the measurement data. However, the calibration tooling operation in the related art is cumbersome.

[0035] Specifically, in the related art, the calibration tool rotates the threaded column to apply pressure, and the threaded column needs to be rotated slowly, which is inefficient.

[0036] The embodiment of the utility model uses a bidirectional hydraulic cylinder 20 to apply force. The bidirectional hydraulic cylinder 20 is simple to operate and can improve the calibration efficiency. At the same time, the bidirectional hydraulic cylinder 20 applies force in both directions. The bidirectional hydraulic cylinder 20 can apply pressure to the measured tensile pressure sensor 200, and can also apply tension to the measured tensile pressure sensor 200. Compared with the related technology in which the threaded column can only apply a large force when the thread strength is large, the bidirectional hydraulic cylinder 20 in the embodiment of the utility model can easily apply a large force through hydraulic action.

[0037] According to the auxiliary calibration device 100 of the embodiment of the utility model, a bidirectional hydraulic cylinder 20 is used to apply a force to the tensile pressure sensor 200 to be measured. Compared with the solution of rotating a threaded column to apply pressure in the related art, the bidirectional hydraulic cylinder 20 is easy to operate and improves the calibration efficiency. At the same time, the bidirectional hydraulic cylinder 20 applies force in both directions, which can adapt to more needs and use hydraulic action to more conveniently apply a larger force.

[0038] Reference Figure 2 In some embodiments, the bidirectional hydraulic cylinder 20 includes: a cylinder body 22 and a force applying member 23 .

[0039] The force-applying member 23 has a first part 231 and a second part 232. The first part 231 is arranged in the cylinder body 22. The first part 231 and the inner wall of the cylinder body 22 jointly define a first pressure space 221 and a second pressure space 222. The first pressure space 221 and the second pressure space 222 are located on opposite sides of the first part 231. The second part 232 is arranged in the first part 231 and extends to the outside of the cylinder body 22. The end of the second part 232 away from the first part 231 is constructed as a telescopic end 21.

[0040] Among them, the two side surfaces of the first part 231 respectively define a first pressure space 221 and a second pressure space 222 together with the inner wall of the corresponding cylinder body 22. The first pressure space 221 and the second pressure space 222 are located on opposite sides of the first part 231, and the pressure difference between the first pressure space 221 and the second pressure space 222 is used to drive the force-applying member 23 to move.

[0041] In the above solution, the force applying member 23 is driven to move by utilizing the pressure difference between the first pressure space 221 and the second pressure space 222 , so that the force applying member 23 can move cyclically, and the overall structure is simple and has high stability.

[0042] Reference Figure 2 In some embodiments, a first through hole 223 and a second through hole 224 are provided on the cylinder body 22 , and the first through hole 223 is connected to the first pressure space 221 , and the second through hole 224 is connected to the second pressure space 222 .

[0043] The first through hole 223 is used to supply the power medium to the first pressure space 221 , and the second through hole 224 is used to supply the power medium to the second pressure space 222 , thereby changing the pressure difference between the first pressure space 221 and the second pressure space 222 .

[0044] In the above scheme, by setting the first through hole 223 and the second through hole 224 spaced apart on the cylinder body 22, the first through hole 223 supplies the power medium to the first pressure space 221, and the second through hole 224 supplies the power medium to the second pressure space 222, thereby completing the supply of the power medium separately, avoiding disorder and improving reliability.

[0045] For example, the power medium is hydraulic oil, and the hydraulic oil is pumped into the first pressure space 221 and the second pressure space 222 respectively through a hydraulic pump.

[0046] In some embodiments, at least one of the mounting portion and the bidirectional hydraulic cylinder 20 is movably disposed on the frame assembly 10 to adjust the distance between the mounting portion and the bidirectional hydraulic cylinder 20 .

[0047] Among them, the mounting portion can be fixed on the frame assembly 10, the bidirectional hydraulic cylinder 20 can be movably mounted on the frame assembly 10, and the distance between the measured tensile pressure sensor 200 and the bidirectional hydraulic cylinder 20 can be adjusted; or, the mounting portion can be movably mounted on the frame assembly 10, the bidirectional hydraulic cylinder 20 is fixed on the frame assembly 10, and the distance between the measured tensile pressure sensor 200 and the bidirectional hydraulic cylinder 20 can be adjusted; or, the mounting portion can be movably mounted on the frame assembly 10, the bidirectional hydraulic cylinder 20 can be movably mounted on the frame assembly 10, and the distance between the measured tensile pressure sensor 200 and the bidirectional hydraulic cylinder 20 can be adjusted.

[0048] In the above scheme, by setting at least one of the mounting portion and the bidirectional hydraulic cylinder 20 to be movable, the distance between the measured tensile pressure sensor 200 and the bidirectional hydraulic cylinder 20 is adjusted, so that it is applicable to the measured tensile pressure sensors 200 of different sizes, thereby increasing the scope of application.

[0049] Reference Figure 3 In some embodiments, the frame assembly 10 includes a base 12 and a column 13 .

[0050] The mounting portion is disposed on the base 12 . The column 13 is disposed on the base 12 , a movable first mounting plate 131 is disposed on the column 13 , and the bidirectional hydraulic cylinder 20 is disposed on the first mounting plate 131 .

[0051] The first mounting plate 131 is sleeved on the column 13 , and the first mounting plate 131 is used to fix the bidirectional hydraulic cylinder 20 .

[0052] In the above solution, the first mounting plate 131 is supported by arranging the upright column 13, and the upright column 13 is fixed on the base 12, so the structure is simple and the reliability is high.

[0053] Specifically, the first mounting plate 131 is provided with an avoidance hole, and the column 13 is passed through the avoidance hole.

[0054] Reference Figure 3 In some embodiments, the column 13 is partially constructed as a threaded portion 132, the threaded portion 132 is provided with a first adjusting nut 1321 and a second adjusting nut 1322, the first mounting plate 131 is located above the first adjusting nut 1321, and the second adjusting nut 1322 is provided above the first mounting plate 131.

[0055] Among them, the first adjusting nut 1321 and the second adjusting nut 1322 are respectively located on opposite sides of the first mounting plate 131, and the first adjusting nut 1321 and the second adjusting nut 1322 are used to position the first mounting plate 131. For example, the bidirectional hydraulic cylinder 20 is located above the measured tensile pressure sensor 200, and the bidirectional hydraulic cylinder 20 applies pressure to the measured tensile pressure sensor 200, and the second adjusting nut 1322 supports the first mounting plate 131 to prevent the first mounting plate 131 from moving up; or, the bidirectional hydraulic cylinder 20 is located above the measured tensile pressure sensor 200, and the bidirectional hydraulic cylinder 20 applies tension to the measured tensile pressure sensor 200, and the first adjusting nut 1321 supports the first mounting plate 131 to prevent the first mounting plate 131 from moving down.

[0056] Among them, by rotating the first adjusting nut 1321 or the second adjusting nut 1322, the first adjusting nut 1321 is threadedly matched with the threaded portion 132, and the second adjusting nut 1322 is threadedly matched with the threaded portion 132, and the first mounting plate 131 can move upward or downward, driving the bidirectional hydraulic cylinder 20 to move up and down.

[0057] In the above scheme, by partially constructing the column 13 as a threaded portion 132, a first adjusting nut 1321 and a second adjusting nut 1322 are provided on the threaded portion 132, so as to realize the positioning of the first mounting plate 131 and control the up and down movement of the first mounting plate 131, the structure is simple and the operation is convenient.

[0058] Reference Figure 3 In some embodiments, another part of the column 13 is constructed as a support portion 133, which is disposed below the threaded portion 132. The diameter of the support portion 133 is greater than the inner diameter of the threaded portion 132, and the support portion 133 is suitable for stopping the first adjusting nut 1321.

[0059] Among them, the support part 133 is located below the threaded part 132, that is, the support part 133 is located below the first adjusting nut 1321, the diameter of the support part 133 is larger than the inner diameter of the threaded part 132, the support part 133 stops at the first adjusting nut 1321, and the support part 133 plays a limiting role to prevent the first mounting plate 131 from excessive movement.

[0060] In the above solution, by providing the support portion 133 to stop the first adjusting nut 1321 , when the first adjusting nut 1321 is loose and suddenly falls, the support portion 133 supports the first adjusting nut 1321 to prevent the tensile pressure sensor 200 from being damaged.

[0061] Specifically, the support portion 133 is configured in a columnar shape, and a top surface of the support portion 133 abuts against the first adjusting nut 1321 .

[0062] Reference Figure 2 , Figure 3 , Figure 4 In some embodiments, the frame assembly 10 includes: a base 12 and a positioning plate 14 .

[0063] The positioning plate 14 is provided with a first connecting member 141, the first connecting member 141 is connected to the base 12, the positioning plate 14 is provided with a mounting hole 142, the mounting hole 142 is configured as a mounting portion, a second connecting member is provided in the mounting hole 142, and the second connecting member is used to connect the measured tensile pressure sensor 200. There are a plurality of mounting holes 142, and the plurality of mounting holes 142 are circumferentially spaced around the central axis of the positioning plate 14.

[0064] The first connecting member 141 connects the positioning plate 14 and the base 12 to fix the positioning plate 14 on the base 12 , and the second connecting member located in the mounting hole 142 connects the tensile pressure sensor 200 to fix the tensile pressure sensor 200 on the positioning plate 14 .

[0065] In the above scheme, by setting a plurality of mounting holes 142 circumferentially spaced along the central axis of the positioning plate 14, the second connecting members on the plurality of mounting holes 142 are respectively connected to the measured tensile pressure sensor 200, and the measured tensile pressure sensor 200 has multiple connection points, thereby making the measured tensile pressure sensor 200 more stable.

[0066] Specifically, the first connecting member 141 is a connecting bolt, which is connected to the base 12. The second connecting member is a connecting bolt, which is fixed on the positioning plate 14 and connected to the tensile pressure sensor 200 to be measured.

[0067] Reference Figure 5 In some embodiments, the plurality of mounting holes 142 include a first mounting hole 1421 and a second mounting hole 1422 , a diameter of the second mounting hole 1422 is greater than a diameter of the first mounting hole 1421 , and the first mounting hole 1421 is disposed on an inner side of the second mounting hole 1422 .

[0068] The diameter of the first mounting hole 1421 is different from the diameter of the second mounting hole 1422, and the first mounting hole 1421 and the second mounting hole 1422 correspond to different sizes of the measured tension and pressure sensors 200. At the same time, the first mounting hole 1421 is located inside the second mounting hole 1422, and the first mounting hole 1421 is closer to the central axis of the positioning plate 14 than the second mounting hole 1422.

[0069] In the above scheme, by setting the first mounting hole 1421 and the second mounting hole 1422 of different diameters, the first mounting hole 1421 and the second mounting hole 1422 respectively correspond to the measured tensile pressure sensors 200 of different sizes. That is to say, different measured tensile pressure sensors 200 can be fixed on the same positioning plate 14, thereby increasing the compatibility.

[0070] Reference Figure 5 In some embodiments, the plurality of mounting holes 142 further include a third mounting hole 1423, the diameter of the third mounting hole 1423 is smaller than the diameter of the second mounting hole 1422, the third mounting hole 1423 and the second mounting hole 1422 are at the same distance from the central axis, and the third mounting hole 1423 is disposed between two adjacent second mounting holes 1422.

[0071] The diameter of the third mounting hole 1423 is smaller than the diameter of the second mounting hole 1422 , and the sizes of the tensile and pressure sensors 200 to be measured corresponding to the third mounting hole 1423 and the second mounting hole 1422 are different.

[0072] In the above solution, by providing the third mounting hole 1423 , the diameter of the third mounting hole 1423 is smaller than the diameter of the second mounting hole 1422 , and the positioning plate 14 is adapted to more sizes of the measured tensile and pressure sensors 200 , further increasing the application range.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An auxiliary calibration device, characterized in that: include: A frame assembly (10), the frame assembly (10) being provided with a mounting portion, the mounting portion being used to mount a tensile pressure sensor (200) to be measured; A bidirectional hydraulic cylinder (20), the bidirectional hydraulic cylinder (20) being arranged on the frame assembly (10), the bidirectional hydraulic cylinder (20) having a telescopic end (21); A force sensor (30) is connected to the telescopic end (21) and the tensile and pressure sensors (200) to be measured, respectively, so as to calibrate the tensile and pressure sensors (200) to be measured.

2. The auxiliary calibration device according to claim 1, characterized in that: The bidirectional hydraulic cylinder (20) comprises: Cylinder body (22); A force-applying member (23), the force-applying member (23) comprising a first portion (231) and a second portion (232), the first portion (231) being arranged in the cylinder body (22), the first portion (231) and the inner wall of the cylinder body (22) jointly defining a first pressure space (221) and a second pressure space (222), the first pressure space (221) and the second pressure space (222) being located on opposite sides of the first portion (231), the second portion (232) being arranged in the first portion (231) and extending outside the cylinder body (22), and an end of the second portion (232) away from the first portion (231) being configured as the telescopic end (21).

3. The auxiliary calibration device according to claim 2, characterized in that: The cylinder body (22) is provided with a first through hole (223) and a second through hole (224) which are arranged at intervals; the first through hole (223) is connected to the first pressure space (221), and the second through hole (224) is connected to the second pressure space (222).

4. The auxiliary calibration device according to claim 1, characterized in that: At least one of the mounting portion and the bidirectional hydraulic cylinder (20) is movably disposed on the frame assembly (10) so as to adjust the distance between the mounting portion and the bidirectional hydraulic cylinder (20).

5. The auxiliary calibration device according to claim 4, characterized in that: The frame assembly (10) comprises: A base (12), wherein the mounting portion is arranged on the base (12); A column (13), wherein the column (13) is arranged on the base (12), a movable first mounting plate (131) is arranged on the column (13), and the bidirectional hydraulic cylinder (20) is arranged on the first mounting plate (131).

6. The auxiliary calibration device according to claim 5, characterized in that: The column (13) is partially constructed as a threaded portion (132), and the threaded portion (132) is provided with a first adjusting nut (1321) and a second adjusting nut (1322); the first mounting plate (131) is located above the first adjusting nut (1321), and the second adjusting nut (1322) is provided above the first mounting plate (131).

7. The auxiliary calibration device according to claim 6, characterized in that: Another part of the column (13) is constructed as a support portion (133), and the support portion (133) is arranged below the threaded portion (132). The diameter of the support portion (133) is larger than the inner diameter of the threaded portion (132), and the support portion (133) is suitable for stopping the first adjusting nut (1321).

8. The auxiliary calibration device according to claim 1, characterized in that: The frame assembly (10) comprises: Base (12); A positioning plate (14), wherein a first connecting member (141) is provided on the positioning plate (14), wherein the first connecting member (141) is connected to the base (12), wherein a mounting hole (142) is provided on the positioning plate (14), wherein the mounting hole (142) is configured as the mounting portion, wherein a second connecting member is provided in the mounting hole (142), wherein the second connecting member is used to connect the measured tensile and pressure sensors (200); wherein: There are a plurality of mounting holes (142), and the plurality of mounting holes (142) are arranged at intervals in the circumferential direction around the central axis of the positioning plate (14).

9. The auxiliary calibration device according to claim 8, characterized in that: The plurality of mounting holes (142) include a first mounting hole (1421) and a second mounting hole (1422), the diameter of the second mounting hole (1422) being greater than the diameter of the first mounting hole (1421), and the first mounting hole (1421) being arranged on the inner side of the second mounting hole (1422).

10. The auxiliary calibration device according to claim 9, characterized in that: The plurality of mounting holes (142) further include a third mounting hole (1423), the diameter of the third mounting hole (1423) being smaller than the diameter of the second mounting hole (1422), the third mounting hole (1423) and the second mounting hole (1422) being equidistant from the central axis, and the third mounting hole (1423) being arranged between two adjacent second mounting holes (1422).

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