Torsion spring method magnetostrictive torque measurement and observation device

Abstract

The utility model discloses a device for measuring and observing magnetic torque by using a torsional spring method. The device comprises a bottom plate, a transmission unit mechanism, a rotating disc mechanism and a locking mechanism, the transmission unit mechanism is installed on the bottom plate, the transmission unit mechanism and the rotating disc mechanism are in synchronous rotating connection, the rotating disc mechanism is installed on the transmission unit mechanism, a magnetic measured object is placed on the rotating disc mechanism, and the locking mechanism is installed on the transmission unit mechanism. The locking mechanism is used for locking and releasing the rotation action of the transmission unit mechanism on the carrying disc. According to the utility model, the test result is more accurate, the operation is more convenient, and the inconvenience that a tester enters a magnetic field environment to operate and observe is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of medical equipment, and in particular relates to a torsion spring method magneto-torque measurement and observation device. Background Art

[0002] In recent years, implantable devices have become increasingly popular, with market acceptance increasing year by year. Because implantable devices generate magnetotorque forces in the static magnetic field of magnetic resonance imaging (MRI), which can potentially harm patients during examination, testing of the magnetotorque forces of implantable devices is crucial.

[0003] Various test devices have been proposed internationally for testing the magnetic resonance compatibility of medical implants for magnetotorque. These include the low-friction surface device, which places the implant under test on a low-friction, non-metallic, non-conductive surface as close to the isocenter of the magnetic resonance system as possible. The pulley method uses a low-friction pulley attached to a rotating platform to determine the device's maximum magnetotorque. The suspension method, a qualitative device, suspends the implant under test within the magnetic resonance system via a cable and then rotates it at defined angles while observing its motion or rotation. Finally, the torsion spring method utilizes a torsion pendulum to determine the magnetotorque of the implant under test.

[0004] At present, the existing test equipment is relatively cumbersome, low in precision and inconvenient for testing and observation. In actual application, the existing structure is complex and the measurement error of large torque is relatively large. The calculation of torque force is too simple, resulting in low precision. At the same time, it is inconvenient to observe when the test device is placed in the middle of the magnetic resonance static magnetic field, and personnel need to enter the static magnetic field back and forth for observation, which causes inconvenience in observation. Utility Model Content

[0005] The purpose of the present utility model is to solve the problem in the prior art that the torque changes of implantable medical devices under static magnetic fields are difficult to be conveniently observed, and to provide a torsion spring method magnetotorque measurement and observation device, so as to achieve more accurate torque force testing of implantable medical devices under static magnetic fields with a simpler structure, more accurate torsion spring design, and more convenient observation device.

[0006] The specific technical solutions adopted in this utility model are as follows:

[0007] The utility model comprises a base plate, a transmission unit mechanism, a rotating disk mechanism and a locking mechanism;

[0008] The transmission unit mechanism is mounted on the base plate, and the transmission unit mechanism and the rotating disk mechanism are synchronously rotated and connected; the transmission unit mechanism includes two main transmission unit assemblies, namely a first main transmission unit assembly and a second main transmission unit assembly, and the first main transmission unit assembly and the second main transmission unit assembly are meshed for transmission;

[0009] The rotating disk mechanism is mounted on the transmission unit mechanism, and the magnetic object to be measured is placed on the rotating disk mechanism; the rotating disk mechanism includes a rotating disk and a loading disk; the rotating disk is mounted on the upper end of the first main transmission unit assembly, and the loading disk is movably mounted on the upper end of the second main transmission unit assembly, and the magnetic object to be measured is placed on the loading disk;

[0010] The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism and is used to lock and release the rotation action of the transmission unit mechanism on the loading plate.

[0011] The first main transmission unit assembly includes a first bearing base, a first transmission shaft and a first transmission shaft gear; the first transmission shaft is arranged vertically and the lower end is mounted on the base plate through the first bearing base, the upper end of the first transmission shaft is coaxially fixedly sleeved with a rotating disk, and the middle part of the first transmission shaft is coaxially fixedly sleeved with the first transmission shaft gear;

[0012] The second main transmission unit assembly includes a second bearing base, a second transmission shaft, a second transmission shaft gear, a shaft connecting piece and a rotating torsion spring; the second transmission shaft is arranged vertically and the lower end is mounted on the base plate through the second bearing base, the upper end of the second transmission shaft is coaxially movably mounted with a shaft connecting piece, and the middle part of the second transmission shaft is coaxially fixedly sleeved with the second transmission shaft gear; a support shaft is coaxially sleeved inside the rotating torsion spring, the lower end of the support shaft is coaxially movably connected to the upper end of the second transmission shaft through the shaft connecting piece, and the upper end of the support shaft is movably sleeved with the loading plate of the rotating plate mechanism.

[0013] In a specific implementation, the form of the shaft connection member is not limited, and a coupling or the like may be used. The coupling may have a groove at the upper end thereof into which the rotary torsion spring can be inserted.

[0014] The first transmission shaft gear of the first main transmission unit assembly and the second transmission shaft gear of the second main transmission unit assembly are meshed and transmitted.

[0015] The gear ratio of the direct meshing transmission between the first transmission shaft gear and the second transmission shaft gear is less than 1.

[0016] The transmission unit mechanism further includes a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are engaged and connected via the secondary transmission unit assembly;

[0017] The secondary transmission unit includes a third bearing base, a third transmission shaft and a third transmission shaft gear; the third transmission shaft is arranged vertically and the lower end is mounted on the base plate through the third bearing base, and the middle part of the third transmission shaft is coaxially fixed with a third transmission shaft gear; the third transmission shaft gear includes a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively engaged with the first transmission shaft gear and the second transmission shaft gear for transmission.

[0018] There is no requirement for the gear ratio when the third transmission shaft gear is meshed with the first transmission shaft gear and the second transmission shaft gear.

[0019] The gear ratio of the indirect meshing transmission between the first transmission shaft gear and the second transmission shaft gear is less than 1.

[0020] The rotating disk and the loading disk are both kept in a horizontal position, and the disk surfaces of the rotating disk and the loading disk are both provided with angle scales marked around the outer circumference;

[0021] The torsion spring method magnetotorque measurement and observation device also includes a first pointer, a second pointer and two side plates; the two side plates are vertically installed on both sides of the base plate, and the space between the two side plates is used to install the transmission unit mechanism. The two side plates have vertically opened mounting grooves, and the first pointer and the second pointer are respectively installed on the mounting grooves of the two side plates. The first pointer and the second pointer are both facing the rotating disk mechanism, pointing to the angle scale of the loading disk and the angle scale of the rotating disk respectively.

[0022] The torsion spring method magnetotorque measurement and observation device further includes a rotation angle recording device, which is installed above the loading plate and the first pointer and is used to record the scale value on the loading plate pointed to by the first pointer.

[0023] The rotation angle recording device includes but is not limited to a periscope.

[0024] The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer and the second pointer are all made of nylon plastic; the bottom plate and the two side plates are all made of acrylic.

[0025] The locking mechanism includes a fixing support and a locking screw. One end of the fixing support is vertically fixed on the side panel close to the first main transmission unit assembly. The other end of the fixing support is provided with a through hole for the first transmission shaft of the first main transmission unit assembly to pass through. The locking screw is screwed on the side wall of the through hole of the fixing support.

[0026] This utility model provides a torsion spring-based magnetotorque measurement and observation device, which can be used to observe the torque generated by an object, such as an implantable medical device, under the static magnetic field of an MRI. This device indirectly records the magnetotorque by measuring the rotation angle of a carrier supported by a torsion spring, and then directly measures the magnetotorque using a torque tester. Compared to existing technologies, this approach provides more accurate results when measuring the magnetotorque of implantable medical devices subjected to high torque.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. This utility model features a key structural improvement: the shaft connector, rotating torsion spring, and loading tray are removable. The remaining components are fixed, with each drive shaft secured only at the bottom. Compared to existing designs where the drive shafts are fixed at both the top and bottom, this structure significantly reduces drive shaft friction and, consequently, torque during testing. This results in more accurate test results and improved ease of operation.

[0029] 2. The utility model has made improvements in the rotary torsion spring. The utility model has changed the outer surface of the rotary torsion spring, which is likely to be caused by the friction of the outer shell. At the same time, the rotary torsion spring design is more stable in structure and more accurate in large torque testing.

[0030] 3. This utility model optimizes the magneto-torque test method. Compared to existing technologies, this utility model places the entire device in a static magnetic field. When magneto-torque is applied, the load plate will deflect, and the scale value of the pointer is recorded. After leaving the magnetic field, the shaft connector, rotating torsion spring, and load plate are placed on the torque tester and rotated to the same scale value as before. The torque measured on the torque tester is the magneto-torque applied to the device in the magnetic field.

[0031] 4. This utility model improves the observation of the rotation angle of the carrier plate in a static magnetic field. Traditionally, the test device must be placed at the center of the static magnetic field, making it difficult for the tester to observe. However, this utility model proposes a periscope-style observation structure, eliminating the inconvenience of the tester entering the magnetic field environment.

[0032] 5. In the embodiment of this utility model, the bottom plate and side plates are made of acrylic, while the internal transmission shaft, pointer, etc. are made of nylon plastic. These two materials are easy to form, low cost, and unaffected by magnetic fields. Compared with other materials, they have advantages such as easy processing and low manufacturing difficulty. Moreover, structures made of these materials have lower friction, which can produce more accurate test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the structure of a torsion spring method magneto-torque measurement and observation device;

[0034] Figure 2 Schematic diagram of the periscope structure.

[0035] In the figure: 1. Base plate; 2. Bearing base; 3. First transmission shaft; 4. Second transmission shaft; 5. Third transmission shaft; 6. Rotating disk; 7. Loading disk; 8. Rotating torsion spring; 9. Fixed support; 10. First pointer; 11. Second pointer; 12. First transmission shaft gear; 13. Second transmission shaft gear; 14. Third transmission shaft gear; 15. Side panel; 16. Periscope; 17. Locking screw; 18. Shaft connector. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] like Figure 1 As shown, the device includes a base plate 1, a transmission unit mechanism, a rotating disk mechanism and a locking mechanism;

[0038] The transmission unit mechanism is installed on the base plate 1, and the transmission unit mechanism and the rotating disk mechanism are synchronously rotated and connected; the transmission unit mechanism includes two main transmission unit components, namely the first main transmission unit component and the second main transmission unit component, and the first main transmission unit component and the second main transmission unit component are engaged for transmission.

[0039] The rotating disk mechanism is installed on the transmission unit mechanism, and a magnetic object to be measured is placed on one of the disks of the rotating disk mechanism; the rotating disk mechanism includes a rotating disk 6 and a loading disk 7; the rotating disk 6 is installed on the upper end of the first transmission shaft 3 of the first main transmission unit assembly, and the loading disk 7 is movably mounted on the upper end of the support shaft of the rotating torsion spring 8 of the second main transmission unit assembly. The magnetic object to be measured is placed on the loading disk 7, and nothing is placed on the rotating disk 6.

[0040] The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism, and is used to lock and release the rotation action of the transmission unit mechanism on the loading plate 7.

[0041] The first main transmission unit assembly includes a first bearing base 2, a first transmission shaft 3 and a first transmission shaft gear 12; the first transmission shaft 3 is arranged vertically and the lower end is mounted on the base plate 1 through the first bearing base 2, the upper end of the first transmission shaft 3 is coaxially fixed with a rotating disk 6, and the middle part of the first transmission shaft 3 is coaxially fixed with a first transmission shaft gear 12.

[0042] The second main transmission unit assembly includes a second bearing base 2, a second transmission shaft 4, a second transmission shaft gear 13, a shaft connecting piece 18 and a rotary torsion spring 8; the second transmission shaft 4 is arranged vertically and the lower end is mounted on the base plate 1 through the second bearing base 2, the upper end of the second transmission shaft 4 is coaxially movably mounted with a shaft connecting piece 18, and the middle part of the second transmission shaft 4 is coaxially fixedly sleeved with the second transmission shaft gear 13; the rotary torsion spring 8 is coaxially sleeved with a support shaft, the lower end of the support shaft is coaxially movably mounted and connected to the upper end of the second transmission shaft 4 through the shaft connecting piece 18, the upper end of the support shaft is movably sleeved and connected to the loading plate 7 of the rotary disk mechanism, the bottom end of the shaft connecting piece 18 is detachably fixed to the second transmission shaft 4, and the bottom end of the rotary torsion spring 8 is detachably fixed to the shaft connecting piece 18. When the second transmission shaft 4 is locked and cannot rotate, the rotary torsion spring 8 provides the loading plate 7 with the degree of freedom to rotate around the center plane of the disk surface.

[0043] In a specific implementation, the form of the shaft connecting member 18 is not limited, and a coupling or the like may be used. The coupling may have a groove at the upper end thereof into which the rotary torsion spring 8 can be inserted.

[0044] The first transmission shaft gear 12 of the first main transmission unit assembly and the second transmission shaft gear 13 of the second main transmission unit assembly are engaged and transmitted.

[0045] The gear ratio of the direct meshing transmission between the first transmission shaft gear 12 and the second transmission shaft gear 13 is less than 1.

[0046] The transmission unit mechanism also includes a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are engaged and connected through the secondary transmission unit assembly.

[0047] The secondary transmission unit includes a third bearing base 2, a third transmission shaft 5 and a third transmission shaft gear 14; the third transmission shaft 5 is arranged vertically and the lower end is mounted on the base plate 1 through the third bearing base 2, and the middle part of the third transmission shaft 5 is coaxially fixed with a third transmission shaft gear 14; the third transmission shaft gear 14 includes a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively engaged with the first transmission shaft gear 12 and the second transmission shaft gear 13 for transmission.

[0048] There is no requirement for the gear ratio when the third transmission shaft gear 14 is meshed with the first transmission shaft gear 12 and the second transmission shaft gear 13 .

[0049] The gear ratio of the indirect meshing transmission between the first transmission shaft gear 12 and the second transmission shaft gear 13 is less than 1.

[0050] The rotating disk 6 and the loading disk 7 are both kept in a horizontal posture, and the disk surfaces of the rotating disk 6 and the loading disk 7 are both provided with angle scales marked around the outer circumference.

[0051] The torsion spring method magnetotorque measurement and observation device also includes a first pointer 10, a second pointer 11 and two side plates 15; the two side plates 15 are symmetrically and vertically installed on both sides of the base plate 1, and the space between the two side plates 15 is used to install the transmission unit mechanism. The two side plates 15 have vertically opened mounting grooves, and the first pointer 10 and the second pointer 11 are respectively vertically and slidably installed on the mounting grooves of the two side plates 15. The first pointer 10 is installed on the mounting groove of the side plate 15 close to the loading plate 7, and the second pointer 11 is installed on the mounting groove of the side plate 15 close to the rotating disk 6, so that the height of the first pointer 10 and the second pointer 11 can be adjusted, which facilitates the pointing function of the first pointer 10 and the second pointer 11. The first pointer 10 and the second pointer 11 are both facing the rotating disk mechanism, pointing to the angle scale of the loading plate 7 and the angle scale of the rotating disk 6 respectively.

[0052] The torsion spring method magnetotorque measurement and observation device further includes a rotation angle recording device, which is installed above the carrier plate 7 and the first pointer 10 and is used to record the scale value on the carrier plate 7 pointed by the first pointer 10.

[0053] like Figure 2 As shown, the rotation angle recording device includes but is not limited to a periscope 16 .

[0054] The periscope 16 is made of non-metallic material, and a light source may be further installed on the periscope 16 to supplement the light source during observation.

[0055] The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer 10 and the second pointer 11 are all made of nylon plastic, and the bottom plate 1 and the two side plates 15 are all made of acrylic.

[0056] The locking mechanism includes a fixing support 9 and a locking screw 17. One end of the fixing support 9 is vertically cantilevered and fixed on the side plate 15 close to the first main transmission unit assembly. The other end of the fixing support 9 is provided with a through hole for the first transmission shaft 3 of the first main transmission unit assembly to pass through. The locking screw 17 is screwed on the side wall of the through hole of the fixing support 9. By controlling the screwing depth, the controllable locking of the relative rotation of the first transmission shaft 3 is achieved.

[0057] During implementation, a magnetic object to be measured is placed on the test plate 7, and the entire device is placed in a magnetic field. When the magnetic object is subjected to the magnetostrictive torque of the magnetic field, the rotational freedom provided by the rotating torsion spring 8 can drive the test plate 7 to rotate along with it. Due to the characteristics of the rotating torsion spring 8, the rotation angle of the test plate 7 is positively correlated with the magnetostrictive torque applied to the magnetic object to be measured. Therefore, by recording the rotation angle of the test plate 7, the magnetostrictive torque applied to the object to be measured can be inferred.

[0058] However, the quantitative relationship between the rotation angle of the object carrier 7 and the magneto-torque force exerted on the magnetic object to be measured is difficult to be measured directly, and therefore needs to be measured by other means.

[0059] The bottom end of the shaft connecting member 18 of the utility model is detachably fixed to the second transmission shaft 4, the bottom end of the rotating torsion spring 8 is detachably fixed to the shaft connecting member 18, and the top end of the rotating torsion spring 8 is movably fixed to the loading plate 7. When a magnetic field is added to the device, the magnetic object to be measured is subjected to a magneto-induced torque, and the rotating torsion spring 8 and the loading plate 7 rotate. The scale value on the loading plate 7 at which the first pointer 10 points is recorded, and then the shaft connecting member 18, the rotating torsion spring 8 and the loading plate 7 are removed from the second transmission shaft 4 in turn, and then the shaft connecting member 18, the rotating torsion spring 8 and the loading plate 7 are fixed in turn on the corresponding positions of the torque measuring instrument, and the loading plate 7 is controlled to rotate to the previously recorded scale value. The torque force displayed by the torque measuring instrument is the magneto-induced torque force exerted on the magnetic object to be measured in the magnetic field.

[0060] The magnetic field is provided by the MRI device.

[0061] It should be noted that, since the entire observation device needs to be placed in the magnetic field environment of the MRI, it is made of non-ferromagnetic materials to avoid the generation of torque in the magnetic field environment of the magnetic resonance device. In the embodiment of the present invention, the transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer 10 and the second pointer 11 are all made of nylon plastic material, and the bottom plate 1 and the two side plates 15 are all made of acrylic material. These two materials are easy to form, low in cost, and are not affected by magnetic fields. Compared with other materials, they have the advantages of convenient processing and low manufacturing difficulty. In addition, the structures processed from these materials have less friction, which can obtain more accurate test results.

[0062] The embodiment of the utility model and its steps are as follows:

[0063] 1) Place the magnetic object to be measured on the loading plate 7 and loosen the locking screw 17 of the locking mechanism;

[0064] 2) rotating the rotating disk 6 to drive the transmission unit mechanism to rotate, thereby driving the loading tray 7 to rotate, so that the first pointer 10 points to the scale value of the loading tray 7 at zero;

[0065] 3) Tighten the locking screw 17 of the locking mechanism to keep the transmission unit mechanism locked. Then place the torsion spring magnetotorque measuring device in a magnetic field. The magnetic object to be measured is subjected to the magnetotorque of the magnetic field, thereby driving the rotation of the rotating torsion spring 8 and the loading plate 7.

[0066] 4) Observe and record the scale value of the first pointer 10 pointing to the loading tray 7 through the periscope 16;

[0067] 5) After removing the torsion spring magnetotorque measuring device from the magnetic field, remove the magnetic object to be measured, and then remove the loading plate 7, the rotating torsion spring 8, and the shaft connecting member 18 from the torsion spring magnetotorque measuring device in sequence;

[0068] 6) Install the shaft connector 18, the rotary torsion spring 8, and the loading plate 7 removed in step 5) on the test fixture of the torque tester;

[0069] 7) Rotate the loading plate 7 installed in step 6) from the scale value of zero to the scale value recorded in step 3). The torque displayed on the torque tester is the magneto-induced torque exerted on the magnetic object in the magnetic field.

[0070] When using the periscope 16 for observation, step 4) is specifically: fixing the periscope 16 above the first pointer 10 pointing to the loading tray 7, observing the scale value of the first pointer 10 pointing to the loading tray 7 through the periscope 16 and manually recording the scale value.

[0071] This utility model provides a torsion spring-based magnetotorque measurement and observation device. This device can be used to observe the torque generated by implantable medical devices, such as those used in magnetic resonance imaging, in a static magnetic field. Because torque-induced rotation of implantable medical devices in the magnetic field of an MRI can cause harm to patients, this device utilizes a simpler structure, a more precise torsion spring design, and a more convenient observation device to achieve more accurate torque testing of implantable medical devices in a static magnetic field.

[0072] Compared with the prior art, the present invention has more accurate test results when testing the magnetotorque of an implantable medical device subjected to large torque.

[0073] The embodiments described above are merely some preferred implementations of the present invention and are not intended to limit the present invention. Persons skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent substitution or equivalent transformation falls within the scope of protection of the present invention.

Claims

1. A torsion spring method magnetotorque measurement and observation device, characterized by: It comprises a base plate (1), a transmission unit mechanism, a rotating disk mechanism and a locking mechanism; The transmission unit mechanism is mounted on the base plate (1), and the transmission unit mechanism and the rotating disk mechanism are synchronously rotated and connected; the transmission unit mechanism comprises two main transmission unit components, namely a first main transmission unit component and a second main transmission unit component, and the first main transmission unit component and the second main transmission unit component are meshed for transmission; The rotating disk mechanism is mounted on the transmission unit mechanism, and a magnetic object to be measured is placed on the rotating disk mechanism; the rotating disk mechanism comprises a rotating disk (6) and a loading disk (7); the rotating disk (6) is mounted on the upper end of the first main transmission unit assembly, the loading disk (7) is movably mounted on the upper end of the second main transmission unit assembly, and the magnetic object to be measured is placed on the loading disk (7); The locking mechanism is mounted on the first main transmission unit assembly of the transmission unit mechanism and is used to lock and release the rotational action of the transmission unit mechanism on the object carrier (7).

2. The torsion spring method magnetotorque measurement and observation device according to claim 1, characterized in that: The first main transmission unit assembly comprises a first bearing base, a first transmission shaft (3) and a first transmission shaft gear (12); the first transmission shaft (3) is arranged vertically and the lower end is mounted on the base plate (1) through the first bearing base, the upper end of the first transmission shaft (3) is coaxially fixedly sleeved with a rotating disk (6), and the middle part of the first transmission shaft (3) is coaxially fixedly sleeved with the first transmission shaft gear (12); The second main transmission unit assembly includes a second bearing base, a second transmission shaft (4), a second transmission shaft gear (13), a shaft connecting member (18) and a rotary torsion spring (8); the second transmission shaft (4) is arranged vertically and the lower end is mounted on the base plate (1) through the second bearing base, the upper end of the second transmission shaft (4) is coaxially movably mounted with the shaft connecting member (18), and the middle part of the second transmission shaft (4) is coaxially fixedly sleeved with the second transmission shaft gear (13); the rotary torsion spring (8) is coaxially sleeved with a support shaft, the lower end of the support shaft is coaxially movably mounted and connected to the upper end of the second transmission shaft (4) through the shaft connecting member (18), and the upper end of the support shaft is movably sleeved and connected to the loading plate (7) of the rotary plate mechanism; The first transmission shaft gear (12) of the first main transmission unit assembly and the second transmission shaft gear (13) of the second main transmission unit assembly are meshed for transmission.

3. The torsion spring method magnetotorque measurement and observation device according to claim 2, characterized in that: The transmission unit mechanism further includes a secondary transmission unit assembly; the secondary transmission unit assembly is located between the first main transmission unit assembly and the second main transmission unit assembly, so that the first main transmission unit assembly and the second main transmission unit assembly are engaged and connected via the secondary transmission unit assembly; The secondary transmission unit assembly comprises a third bearing base, a third transmission shaft (5) and a third transmission shaft gear (14); the third transmission shaft (5) is arranged vertically and the lower end is mounted on the base plate (1) through the third bearing base, and the middle part of the third transmission shaft (5) is coaxially fixed with a third transmission shaft gear (14); the third transmission shaft gear (14) comprises a lower transmission shaft gear and an upper transmission shaft gear; the lower transmission shaft gear and the upper transmission shaft gear are respectively engaged with the first transmission shaft gear (12) and the second transmission shaft gear (13) for transmission.

4. The torsion spring method magnetotorque measurement and observation device according to claim 2, characterized in that: The rotating disk (6) and the loading disk (7) are both kept in a horizontal posture, and the rotating disk (6) and the loading disk (7) are both provided with angle scales marked around the outer circumference. The torsion spring method magneto-torque measurement and observation device further includes a first pointer (10), a second pointer (11) and two side plates (15); the two side plates (15) are vertically mounted on both sides of the base plate (1); the space between the two side plates (15) is used to mount a transmission unit mechanism; the two side plates (15) have vertically opened mounting grooves; the first pointer (10) and the second pointer (11) are respectively mounted on the mounting grooves of the two side plates (15); the first pointer (10) and the second pointer (11) are both oriented toward the rotating disk mechanism, pointing to the angle scale of the loading disk (7) and the angle scale of the rotating disk (6), respectively.

5. The torsion spring method magnetotorque measurement and observation device according to claim 4, characterized in that: The torsion spring method magneto-torque measurement and observation device further comprises a rotation angle recording device, which is installed above the loading plate (7) and the first pointer (10) and is used to record the scale value on the loading plate (7) pointed by the first pointer (10).

6. The torsion spring method magnetotorque measurement and observation device according to claim 5, characterized in that: The rotation angle recording device includes but is not limited to a periscope (16).

7. The torsion spring method magnetotorque measurement and observation device according to claim 5, characterized in that: The transmission unit mechanism, the rotating disk mechanism, the locking mechanism, the first pointer (10) and the second pointer (11) are all made of nylon plastic material, and the bottom plate (1) and the two side plates (15) are all made of acrylic material.

8. The torsion spring method magnetotorque measurement and observation device according to claim 1, characterized in that: The locking mechanism comprises a fixing support (9) and a locking screw (17), one end of the fixing support (9) is vertically fixed to a side plate (15) close to the first main transmission unit assembly, the other end of the fixing support (9) is provided with a through hole for the first transmission shaft (3) of the first main transmission unit assembly to pass through, and the locking screw (17) is screwed on the side wall of the through hole of the fixing support (9).

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