Probe calibration device and calibration method thereof

Abstract

The application discloses a kind of probe calibration device and its calibration method, including mounting seat, installation surface is formed in the top of the mounting seat, torque loading mechanism is equipped on the installation surface;Connecting plate is arranged on the installation surface, and standard area is formed between the connecting plate and installation surface, and the top of the torque loading mechanism at least partially extends into the standard area;Calibration area is formed above the standard area, and cross plate probe is in the calibration area, the bottom of the cross plate probe extends into the standard area, and the top of the cross plate probe is connected with the connecting plate.The application can overcome the weight of calibration device to the front end of cross plate probe radial axis vertical generation force, influence the value transmission of cross plate probe, reduce the accuracy and calibration efficiency of the defects of the indication value calibration of cross plate probe.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of metrological detection, and particularly relates to a probe calibration device and a calibration method thereof. BACKGROUND

[0002] The vane shear test is a test for determining the undrained shear strength and sensitivity of saturated soft clay by using a vane, and belongs to a kind of in-situ test for soil. The vane probe is pressed into the soft soil at the bottom of a hole, and is rotated at a uniform speed. The torque required for rotation is measured by a certain measurement system until the soil is destroyed, so as to calculate the shear strength of the soil. The shear strength measured by the vane shear test represents the natural strength (undrained shear strength) of the soil in the hole.

[0003] According to relevant industry standards and calibration specifications, the vane shear test instrument needs to be calibrated periodically. At present, the value calibration of the vane probe is mainly carried out by using a lever and weight structure. The probe is fixed horizontally, and the force arm lever is installed by switching. The load is added or removed manually, so as to realize the value traceability of the vane probe value according to the torque standard value converted from the force arm lever specification and the weight mass.

[0004] The vane probe calibration device with the existing lever and weight structure as a metrological standard can provide limited accuracy of value traceability and low calibration efficiency. The structure itself has many adverse uncertain factors for value traceability, so that the accuracy level of the device cannot meet the requirements of the metrological standard in the calibration specification. SUMMARY

[0005] The present application aims to provide a probe calibration device and a calibration method thereof, which can improve the value traceability accuracy and calibration efficiency of the vane probe.

[0006] The above-mentioned purposes are achieved by the following technical solutions.

[0007] The present application provides a probe calibration device, which comprises a mounting seat, an installation surface is formed at the top end of the mounting seat, and a torque loading mechanism is arranged on the installation surface.

[0008] A connecting plate is arranged above the installation surface, a standard area is formed between the connecting plate and the installation surface, and the top end of the torque loading mechanism at least partially extends into the standard area.

[0009] A calibration area is formed above the standard area, a vane probe is arranged in the calibration area, the bottom end of the vane probe extends into the standard area, and the top end of the vane probe is connected to the connecting plate.

[0010] In some embodiments, a first mounting hole is formed in the mounting surface, a second mounting hole is formed in the connecting plate, a bottom end of the torque loading mechanism is arranged in or extends into the mounting seat through the first mounting hole, and a top end of the cross plate probe is arranged in or extends above the connecting plate through the second mounting hole.

[0011] In some embodiments, a first positioning flange is arranged in the first mounting hole, a bottom end of the torque loading mechanism is arranged in or extends into the mounting seat through the first positioning flange, a second positioning flange is arranged in the second mounting hole, a probe adapter flange is connected to the top end of the cross plate probe, an axial hole of the probe adapter flange is arranged in the second positioning flange, and axial lines of the probe adapter flange, the second positioning flange and the first positioning flange coincide.

[0012] In some embodiments, a plurality of grooves are arranged around the second mounting hole at a top end or a bottom end of the connecting plate, and a positioning mechanism is arranged in the grooves and abuts against an outer wall of the second positioning flange at one end of the second mounting hole.

[0013] In some embodiments, at least three connecting columns are arranged between the mounting seat and the connecting plate, bottom ends of the connecting columns are connected to the mounting seat, and top ends of the connecting columns are connected to the connecting plate.

[0014] In some embodiments, a fixing plate is arranged above the connecting plate, top portions of the connecting columns extend above the connecting plate through the connecting plate, the fixing plate is connected to top ends of the connecting columns, a lifting mechanism is arranged between the fixing plate and the connecting plate, the lifting mechanism includes a lifting plate, at least two lifting rods are arranged at a bottom end of the lifting plate, bottom ends of the lifting rods are connected to the connecting plate, a force sensor is arranged at a top end of the lifting plate, a lifting motor is arranged on the fixing plate, and the lifting motor is in driving connection with the force sensor.

[0015] In some embodiments, a connecting hole is formed in a top portion of the force sensor, a turbine and a worm are connected to the lifting motor, a bottom end of the worm extends below the fixing plate through the fixing plate, and the bottom end of the worm is in screw connection with the connecting hole.

[0016] In some embodiments, a first coupling is arranged between the torque loading mechanism and a standard area, a connecting section is arranged at a top end of the torque loading mechanism, the connecting section is connected to a bottom end of the first coupling, and a top end of the first coupling is arranged in the standard area.

[0017] In some embodiments, a standard torque sensor is arranged in the standard area, a first connecting piece is arranged at the top end of the standard torque sensor, a second coupling is connected to the first connecting piece, a fixing piece is arranged at the top end of the second coupling, the cross plate probe is connected to the top end of the fixing piece, a second connecting piece is arranged at the bottom end of the standard torque sensor, and the second connecting piece is connected to the first coupling.

[0018] The application also provides a probe calibration method,

[0019] The lifting mechanism operates to pull the connecting plate to displace on the connecting column until the pulling force of the lifting mechanism on the connecting plate counteracts the upper gravity of the connecting plate on the cross plate probe;

[0020] The torque loading mechanism operates to transmit the torque to the standard torque sensor in the standard area through the first coupling, and the standard torque value is obtained, and the second coupling connected to the torque loading mechanism is transmitted to the cross plate probe to obtain the to-be-calibrated torque value, and the to-be-calibrated torque value is compared with the standard torque value to calibrate the cross plate probe.

[0021] The probe calibration device and the calibration method thereof provided by the application set the torque loading mechanism on the mounting surface of the mounting seat, form a standard area between the mounting surface and the connecting plate, arrange the standard torque sensor in the standard area and in transmission connection with the top end of the torque loading mechanism, arrange the cross plate probe in the calibration area and in transmission connection with the top end of the standard torque sensor, and connect the top end of the cross plate probe to the connecting plate.

[0022] The cross plate probe is arranged in a vertical manner, in use, the torque loading mechanism operates to generate the torque transmitted to the standard torque sensor in the standard area and the cross plate probe in the calibration area, the standard torque value of the standard torque sensor and the to-be-calibrated torque value of the cross plate probe are obtained, the to-be-calibrated torque value is compared with the standard torque value to calibrate the cross plate probe, compared with the traditional lever weight calibration structure, the torque loading mechanism arranged at the bottom end directly transmits the torque to the standard torque sensor and the cross plate probe above the torque loading mechanism, avoids the self-weight of the torque loading mechanism directly acting on the cross plate probe, avoids the deviation of the value transmitted to the cross plate probe, and avoids the influence on the traceability accuracy and the calibration efficiency of the cross plate probe. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the front view of the application;

[0024] Figure 2 is the perspective view of the application;

[0025] Figure 3 This is an exploded view of the present invention;

[0026] Figure 4 This is a schematic diagram of the coaxiality bar used in this invention;

[0027] Figure 5 This is a cross-sectional view of AA of the present invention;

[0028] Figure 6 This is a cross-sectional view of the BB of the present invention;

[0029] Figure 7 This is the invention Figure 3 A magnified view of part A;

[0030] Figure 8 This is the invention Figure 3 A magnified view of part B.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Mounting base; 101. Mounting surface; 102. First mounting hole; 103. Mounting groove; 104. First positioning flange; 105. Base; 106. Third through hole; 107. Opening; 108. Coaxiality bar; 109. Top plate;

[0033] 200. Torque loading mechanism; 201. Connecting section;

[0034] 300. First coupling;

[0035] 400. Standard torque sensor; 401. First connector; 402. Second connector;

[0036] 500, Second coupling; 501, Fixing component; 5011, Insertion pin;

[0037] 600. Cross-shaped probe; 601. Probe adapter flange;

[0038] 700. Connecting plate; 701. Second mounting hole; 703. Second positioning flange; 704. Groove; 705. Positioning mechanism; 7051. Positioning block; 7052. Positioning screw; 706. Connecting column; 707. Guide flange; 7071. Flange cover plate; 708. First through hole;

[0039] 800. Lifting mechanism; 801. Lifting plate; 802. Lifting motor; 803. Lifting rod; 804. Force sensor;

[0040] 900, Fixing plate; 901, Second through hole. Detailed Implementation

[0041] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0042] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0043] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0044] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0045] refer to Figures 1 to 4 and Figures 7 to 8 The probe calibration device provided in this embodiment includes a base 105, a mounting seat 100 on the base 105, a mounting groove 103 formed inside the mounting seat 100, a mounting surface 101 formed on the top surface of the top plate 109 of the mounting seat 100, a torque loading mechanism 200 on the mounting surface 101, a standard torque sensor 400 drivenly connected to the top of the torque loading mechanism 200, a cross-plate probe 600 drivenly connected to the top of the standard torque sensor 400, and a connecting plate 700 connected to the top of the cross-plate probe 600.

[0046] A first mounting hole 102 is provided on the top plate 109, and a first positioning flange 104 is provided in the first mounting hole 102. The main body of the torque loading mechanism 200 is provided in the mounting groove 103. A cylindrical connecting section 201 is provided at the top of the torque loading mechanism 200. The connecting section 201 extends through the first positioning flange 104 and extends above the mounting surface 101.

[0047] At least three third through holes 106 are provided on the top plate 109. A first through hole 708 is provided on the connecting plate 700 at the position corresponding to the third through holes 106. A guide flange 707 is provided in both the first through hole 708 and the third through hole 106. A connecting post 706 is provided between the connecting plate 700 and the top plate 109. The bottom end of the connecting post 706 is inserted into the third through hole 106 and connected to the guide flange 707. The top end of the connecting post 706 extends through the first through hole 708 and extends above the connecting plate 700. The guide flange 707 located in the first through hole 708 is sleeved on the connecting post 706.

[0048] A standard area is formed between the connecting plate 700 and the mounting surface 101. The standard torque sensor 400 is provided in the standard area. The connecting section 201 of the torque loading mechanism 200 extends into the standard area. A first coupling 300 is provided between the standard torque sensor 400 and the torque loading mechanism 200. The bottom end of the first coupling 300 is connected to the connecting section 201, and the top end of the first coupling 300 is connected to the second connecting member 402 at the bottom end of the standard torque sensor 400.

[0049] A calibration area is provided above the standard area, and the cross-plate probe 600 is located within the calibration area. A first connector 401 is connected to the top of the standard torque sensor 400, and a second coupling 500 is connected to the top of the first connector 401. A fixing member 501 is connected to the top of the second coupling 500, and the top of the fixing member 501 is connected to the bottom of the cross-plate probe 600.

[0050] In this embodiment, the first connector 401 and the second connector 402 have the same structure, both of which are provided on the chassis with a plug rod for connecting to the first coupling 300 or the second coupling 500.

[0051] The fixing member 501 is cylindrical, and its bottom end is inserted into the second coupling 500. The top end of the fixing member 501 is provided with an upwardly extending insertion post 5011. The bottom end of the cross plate probe 600 is provided with an insertion hole (not shown) that mates with the insertion post 5011. The cross plate probe 600 is fixed at the top end of the fixing member 501 through the cooperation of the insertion post 5011 and the insertion hole.

[0052] In use, by replacing the probe adapter flange 601 with different screw hole specifications, it can be adapted to cross plate probes 600 of different manufacturers, sizes and specifications. At the same time, the probe adapter flange 601 and the second positioning flange 703 are connected by a shaft hole transition fit to ensure coaxiality and improve the applicability of the probe calibration device.

[0053] A second mounting hole 701 is provided on the connecting plate 700 at the position corresponding to the first mounting hole 102. A second positioning flange 703 is provided in the second mounting hole 701. The second positioning flange 703 is coaxially arranged with the first positioning flange 104. A probe adapter flange 601 is provided in the second positioning flange 703. The second positioning flange 703 and the probe adapter flange 601 are coaxially arranged with transition fit. The top end of the cross plate probe 600 extends into the second mounting hole 701 and connects with the probe adapter flange 601.

[0054] refer to Figures 4 to 6The connecting plate 700 is provided with a plurality of grooves 704 surrounding the second mounting hole 701. A positioning mechanism 705 is fixed in the groove 704. The positioning mechanism 705 presses against the outer wall of the second positioning flange 703 on the side facing the second mounting hole 701.

[0055] The positioning mechanism 705 includes a positioning block 7051, which is fixed in the groove 704. A positioning screw 7052 is provided on the positioning block 7051, which passes through the positioning block 7051 and is screwed to the positioning block 7051. The end of the positioning screw 7052 passes through the positioning block 7051 and presses against the outer wall of the second positioning flange 703.

[0056] The positioning block 7051 is right-angled and includes a fixed end and a pressing end. The fixed end and the pressing end are integrally formed. The fixed end is fixed in the groove 704 by a screw, bolt or other structure. The pressing end is located on the side of the fixed end near the second mounting hole 701 and extends from the bottom end of the fixed end to the top end above the fixed end. The positioning screw 7052 passes through the pressing end and presses against the outer wall of the second positioning flange 703.

[0057] The groove 704 described in this embodiment is provided with at least three grooves, and preferably three grooves 704 are provided in this embodiment.

[0058] A fixing plate 900 is provided above the connecting plate 700. At least three second through holes 901 are provided on the fixing plate 900. The guide flange 707 is provided in the second through hole 901. The top of the connecting column 706 extends into the second through hole 901 and connects with the guide flange 707. The top of the guide flange 707 located in the second through hole 901 and the bottom of the guide flange 707 located in the third through hole 106 are covered with flange cover plates 7071 to close the guide flange 707.

[0059] A lifting mechanism 800 is provided between the fixed plate 900 and the connecting plate 700. The lifting mechanism 800 includes a lifting plate 801, which is located between the fixed plate 900 and the connecting plate 700. At least three lifting rods 803 are provided at the bottom end of the lifting plate 801. The bottom ends of the lifting rods 803 pass through the connecting plate 700 and are connected to the connecting plate 700.

[0060] A force sensor 804 is provided on the lifting plate 801. The force sensor 804 is used to detect the force exerted by the connecting plate 700 on the cross plate probe 600.

[0061] A connection hole is provided on the force sensor 804, and a lifting motor 802 is provided on the fixed plate 900. A worm gear and a worm are connected to the lifting motor 802. The bottom end of the worm gear passes through the fixed plate 900 and extends below the fixed plate 900, and the bottom end of the worm gear is screwed into the connection hole.

[0062] The torque loading mechanism 200 described in this embodiment is a torque loader (digital torque loading device). The top end of the torque loading mechanism 200 is connected and fixed to the bottom end of the top plate 109 of the mounting base 100 by means of screws, bolts or threaded rods, so that the connecting section 201 at the top end of the torque loading mechanism 200 extends into the first mounting hole 102 and is connected to the first positioning flange 104.

[0063] The mounting base 100 described in this embodiment has an opening 107 that connects to the mounting groove 103. The opening 107 can be used to disassemble or inspect and repair the torque loading mechanism 200 located in the mounting groove 103. An openable and closable observation window (not shown) can be provided at the location of the opening 107 to close the opening 107.

[0064] In this embodiment, the axes of the first positioning flange 104, the first coupling 300, the torque loading mechanism 200, the standard torque sensor 400, the second coupling 500, the fixing member 501, the cross plate probe 600, the second positioning flange 703, and the probe adapter flange 601 are aligned. To achieve this alignment, during installation, the first positioning flange 104 is first installed in the first mounting hole 102, and the second positioning flange 703 is installed in the second mounting hole 701. A coaxiality bar 108 is provided between the first positioning flange 104 and the second positioning flange 703. One end of the coaxiality bar 108 is connected to the first positioning flange 104, and the other end is connected to the first positioning flange 104. The second positioning flange 703 is connected, and then the positioning block 7051 is installed on the connecting plate 700. After the positioning screw 7052 on the positioning block 7051 presses the second positioning flange 703, the coaxiality bar 108 is removed to ensure that the first positioning flange 104 and the second positioning flange 703 do not shift radially before and after the torque is applied. At the same time, the second positioning flange 703 and the probe adapter flange 601 are fixed by a shaft hole transition fit to ensure that the axes of the second positioning flange 703 and the probe adapter flange 601 are coincident, so that the axes of the first positioning flange 104, the second positioning flange 703 and the probe adapter flange 601 are coincident.

[0065] The connecting plate 700, fixing plate 900 and lifting plate 801 described in this embodiment are triangular, and the connecting columns 706 are triangularly distributed, which improves the structural stability of the probe calibration device, overcomes the offset of the structural force axis when the ultimate load occurs to the greatest extent, and reduces the influence of the structure's own weight on the torque value transmission of the cross plate probe 600 and the standard torque sensor 400.

[0066] In this embodiment, the crossbeam calibration device first requires the lifting mechanism 800 to cancel the force exerted by the connecting plate 700 on the crossbeam probe 600 to avoid affecting the accuracy of the reading of the crossbeam probe 600. The lifting motor 802 drives the worm gear to pull the force sensor 804 up within the stroke range of the worm gear until the force sensor 804 detects that the force exerted by the connecting plate 700 on the crossbeam probe 600 is zero, at which point it is determined that the force exerted by the connecting plate 700 on the crossbeam probe 600 has been canceled.

[0067] Then, the torque loading mechanism 200 operates to simultaneously transmit torque to the standard torque sensor 400 and the crossbeam probe 600, thereby obtaining a standard torque value and a torque value to be calibrated, thus calibrating the value of the crossbeam probe 600. Furthermore, the vertical structure provided in this embodiment ensures that the gravity directions of the crossbeam probe 600, the torque loading mechanism 200, and the standard torque sensor 400 coincide with the loading force axis. Moreover, the force acting on the connecting plate 700 at the top of the crossbeam probe 600 is canceled out by the lifting mechanism 800, preventing external structural gravity from acting on the crossbeam probe 600 and causing deviations in the value of the crossbeam probe 600, which would affect the accuracy of the value of the crossbeam probe 600 and the calibration efficiency.

[0068] In this embodiment, the cross-shaped probe 600, the force sensor 804, and the standard torque sensor 400 are all connected to an external display instrument to display the detected values.

[0069] This embodiment also provides a probe calibration method:

[0070] First, a first positioning flange 104 is installed in the first mounting hole 102 opened on the top plate 109 of the mounting base 100, and a second positioning flange 703 is installed in the second mounting hole 701 opened on the connecting plate 700. A coaxiality bar 108, which is connected to the first positioning flange 104 and the second positioning flange 703 respectively, is installed between the connecting plate 700 and the mounting base 100.

[0071] Then, a positioning block 7051 is installed in the groove 704 of the connecting plate 700. After the positioning block 7051 and the positioning screw 7052 press against the outer wall of the second positioning flange 703, the coaxiality bar 108 is removed to ensure that the axes of the first positioning flange 104 and the second positioning flange 703 coincide (coaxial).

[0072] Then, a torque loading mechanism 200 is installed on the mounting base 100. The connecting section 201 at the top of the torque loading mechanism 200 is installed into the first positioning flange 104. A first coupling 300 is installed on the connecting section 201 at the top of the torque loading mechanism 200. A standard torque sensor 400 is installed at the top of the first coupling 300. A second coupling 500 is installed at the top of the standard torque sensor. A cross plate probe 600 is installed at the top of the second coupling 500. A probe adapter flange 601 is installed at the top of the cross plate probe 600. The probe adapter flange 601 is installed into the second positioning flange 703 through a shaft hole transition fit to ensure that the axes of the probe adapter flange 601 and the second positioning flange 703 coincide (coaxial).

[0073] The vertical torque loading structure avoids the direct action of the self-weight of the series components in the standard area on the standard torque sensor 400 and the cross plate probe 600, which would cause the value transmitted to the cross plate probe 600 to deviate and affect the accuracy of the value traceability of the cross plate probe 600.

[0074] By using a positioning mechanism 705, the first positioning flange 104 and the second positioning flange 703 are coaxially fixed by a coaxiality bar 108, so that the axes of the first positioning flange 104 and the second positioning flange 703 coincide. The probe adapter flange 601 and the second positioning flange 703 are transitionally fitted through shaft holes, so that the axes of the probe adapter flange 601 and the second positioning flange 703 coincide, thereby making the axes of the probe adapter flange 601, the first positioning flange 104 and the second positioning flange 703 coincide.

[0075] Then, the lifting motor 802 of the lifting mechanism 800 operates to drive the worm gear to lift the lifting plate 801 within the stroke range of the worm gear, so that the connecting plate 700, driven by the lifting rod 803, follows the lifting plate 801 and is lifted along the axial direction of the connecting column 706 under the guidance of the connecting column 706.

[0076] Furthermore, when the force sensor 804 on the lifting plate 801 detects that the force applied to the lifting plate 801 and the force exerted on the cross plate probe 600 by the weight of the connecting plate 700 and its various components are offset by the force of the lifting mechanism 800 (i.e., when the force sensor 804 detects that the force exerted on the cross plate probe 600 by the weight of the connecting plate 700 and its various components is zero), the operation of the lifting motor 802 is stopped, and the position of the connecting plate 700 on the connecting column 706 is fixed.

[0077] Subsequently, the torque loading mechanism 200 is activated, and the torque is transmitted to the standard torque sensor 400 through the first coupling 300, and then to the cross plate probe 600 through the second coupling 500.

[0078] Finally, the torque values ​​of the standard torque sensor 400 and the cross probe 600 are obtained through an external display. The cross probe 600 is calibrated by comparing the two torque values.

[0079] The probe calibration device and calibration method provided in this embodiment are configured by setting a torque loading mechanism 200 on the mounting surface 101 of the mounting base 100, forming a standard area between the mounting surface 101 and the connecting plate 700. The standard area is used to set a standard torque sensor 400 that is drivenly connected to the top end of the torque loading mechanism 200. The top end of the standard torque sensor 400 is drivenly connected to a cross-plate probe 600 located in the calibration area. The top end of the cross-plate probe 600 is connected to the connecting plate 700.

[0080] In this embodiment, the crossbeam probe 600 is vertically mounted. During use, the torque loading mechanism 200 generates torque, which is transmitted to the standard torque sensor 400 in the standard area and the crossbeam probe 600 in the calibration area. Simultaneously, the standard torque value of the standard torque sensor 400 and the torque value to be calibrated of the crossbeam probe 600 are obtained. The crossbeam probe 600 is calibrated by comparing the torque value to be calibrated with the standard torque value. Compared with the traditional lever and weight calibration structure, the torque loading mechanism 200 located at the bottom directly transmits torque to the standard torque sensor 400 and the crossbeam probe 600 located above the torque loading mechanism 200. The lifting mechanism 800 pulls the connecting plate 700 to counteract the upper gravity acting on the crossbeam probe 600, thereby achieving the calibration of the crossbeam probe 600. On the one hand, it greatly saves manpower and time costs compared to manually adding or subtracting weights; on the other hand, it avoids the situation where the weight of the series components and torque loading mechanism 200 in the standard area directly acts on the cross plate probe 600, causing deviations in the values ​​transmitted to the cross plate probe 600 and affecting the accuracy and efficiency of the cross plate probe 600's indication calibration.

[0081] The above embodiments are not an exhaustive list based on the present invention, and there may be many other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A probe calibration device, characterized in that, It includes a mounting base, a mounting surface is formed at the top of the mounting base, and a torque loading mechanism is provided on the mounting surface; A connecting plate is mounted on the mounting surface, and a standard area is formed between the connecting plate and the mounting surface. The top end of the torque loading mechanism extends at least partially into the standard area. A calibration area is formed above the standard area, and a crossbeam probe is placed within the calibration area. The bottom end of the crossbeam probe extends into the standard area, and the top end of the crossbeam probe is connected to the connecting plate. At least three connecting posts are provided between the mounting base and the connecting plate, with the bottom end of the connecting post connected to the mounting base and the top end of the connecting post connected to the connecting plate; A fixing plate is provided above the connecting plate. The top of the connecting column extends through the connecting plate and above the connecting plate. The fixing plate is connected to the top of the connecting column. A lifting mechanism is provided between the fixing plate and the connecting plate. The lifting mechanism includes a lifting plate. At least two lifting rods are provided at the bottom of the lifting plate. The bottom of the lifting rods is connected to the connecting plate. A force sensor is provided at the top of the lifting plate. A lifting motor is provided on the fixing plate. The lifting motor is drivenly connected to the force sensor. The bottom end of the lifting rod passes through the connecting plate and is connected to the connecting plate; The force sensor is used to detect the force exerted by the connecting plate on the cross-shaped probe.

2. The probe calibration device as described in claim 1, characterized in that, A first mounting hole is provided on the mounting surface, and a second mounting hole is provided on the connecting plate. The bottom end of the torque loading mechanism is located in the first mounting hole or extends through the first mounting hole into the mounting base. The top end of the cross plate probe is located in the second mounting hole or extends through the second mounting hole to the top of the connecting plate.

3. The probe calibration device as described in claim 2, characterized in that, A first positioning flange is provided in the first mounting hole. The bottom end of the torque loading mechanism is located in the first positioning flange or extends through the first positioning flange into the mounting base. A second positioning flange is provided in the second mounting hole. The top end of the cross plate probe is connected to a probe adapter flange. The shaft hole of the probe adapter flange is located in the second positioning flange. The axes of the probe adapter flange, the second positioning flange, and the first positioning flange coincide.

4. The probe calibration device as described in claim 3, characterized in that, A plurality of grooves are provided at the top or bottom of the connecting plate, surrounding the second mounting hole. A positioning mechanism is provided in the groove, and one end of the positioning mechanism facing the second mounting hole presses against the outer wall of the second positioning flange.

5. The probe calibration device as described in claim 1, characterized in that, A connection hole is provided on the top of the force sensor. A turbine and a worm gear are connected to the lifting motor. The bottom end of the worm gear extends through the fixing plate and below the fixing plate, and the bottom end of the worm gear is screwed into the connection hole.

6. The probe calibration device according to any one of claims 1 to 4, characterized in that, A first coupling is provided between the torque loading mechanism and the standard area. The top end of the torque loading mechanism is provided with a connecting section, which is connected to the bottom end of the first coupling. The top end of the first coupling is located within the standard area.

7. The probe calibration device as described in claim 6, characterized in that, A standard torque sensor is provided within the standard area. A first connector is provided at the top of the standard torque sensor. A second coupling is connected to the first connector. A fixing member is provided at the top of the second coupling. The cross plate probe is connected to the top of the fixing member. A second connector is provided at the bottom of the standard torque sensor. The second connector is connected to the first coupling.

8. A probe calibration method, used in the probe calibration device as described in claim 7, characterized in that, The lifting mechanism operates to move the connecting plate on the connecting column until the pulling force of the lifting mechanism on the connecting plate cancels out the gravity of the connecting plate on the cross plate probe. The torque loading mechanism transmits torque through the first coupling to the standard torque sensor connected to the torque loading mechanism in the standard area to obtain the standard torque value. At the same time, it transmits the torque through the second coupling connected to the torque loading mechanism to the cross plate probe to obtain the torque value to be calibrated. The torque value to be calibrated is compared with the standard torque value to calibrate the cross plate probe.

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