CN214373030U - Torque measuring device and hydraulic power measuring system - Google Patents

Abstract

The disclosure provides a torsion measuring device and a hydraulic dynamometer system, and relates to the technical field of aero-engine testing. This torque measuring device includes sleeve, pivot, foil gage, signal conversion subassembly and retaining ring, wherein: the sleeve comprises a first mounting plate and a second mounting plate which are distributed in parallel and a force bearing rib plate fixed between the first mounting plate and the second mounting plate; the static calibration device is connected with the sleeve through a bolt and is used for applying torque to the force bearing rib plate; the strain gauge is arranged on the force bearing rib plate and used for detecting the deformation quantity generated after the force bearing rib plate bears the torque; the signal conversion assembly is electrically connected with the strain gauge and is used for converting the deformation quantity detected by the strain gauge into torque information; and the check ring is detachably connected between the first mounting plate and the second mounting plate and is coaxially arranged with the rotating shaft, and the periphery of the bearing rib plate is sleeved with the check ring. The torque measuring device can improve the measurement precision of torque and reduce the maintenance cost.

Description

Torque measuring device and hydraulic power measuring system

Technical Field

The disclosure relates to the technical field of aero-engine testing, in particular to a torsion measuring device and a hydraulic dynamometer system.

Background

The aero-engine is a core component of an airplane, and the performance of the aero-engine directly affects the personal safety of pilots and people, so that the basic performance of the aero-engine is especially important to detect before the aero-engine is applied to actual production.

The output power of the engine is absorbed and the power output quantity of the engine is controlled by a hydraulic dynamometer, and the control of the power output quantity of the engine needs to measure and control the torque of the hydraulic dynamometer, so that a torque measuring device is needed to test the torque. However, the conventional torsion measuring device has high manufacturing cost and low test precision.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The purpose of the present disclosure is to overcome the above-mentioned deficiencies in the prior art, and provide a torque measurement device and a hydraulic dynamometer system, which can improve the measurement accuracy of the torque and reduce the maintenance cost.

According to an aspect of the present disclosure, there is provided a torsion measuring apparatus including:

the sleeve comprises a first mounting plate and a second mounting plate which are distributed in parallel and a force bearing rib plate fixed between the first mounting plate and the second mounting plate;

the static calibration device is connected with the sleeve through a bolt and is used for applying torque to the force bearing rib plate;

the strain gauge is arranged on the force bearing rib plate and used for detecting the deformation quantity generated after the force bearing rib plate bears the torque;

the signal conversion assembly is electrically connected with the strain gauge and is used for converting the deformation quantity detected by the strain gauge into torque information;

and the check ring is detachably connected between the first mounting plate and the second mounting plate and is coaxially arranged with the sleeve, and the check ring is sleeved on the periphery of the force bearing rib plate.

In an exemplary embodiment of the disclosure, the force-bearing rib plate includes a plurality of force-bearing struts, the force-bearing struts are uniformly distributed along the circumferential direction, and each force-bearing strut is provided with at least one strain gauge.

In an exemplary embodiment of the disclosure, two strain gauges are arranged on each force bearing support column, and the two strain gauges are oppositely arranged on the side wall of the force bearing support column.

In an exemplary embodiment of the present disclosure, the torsion measuring apparatus further includes:

and the lubricating assembly is fixed between the first mounting plate and the second mounting plate and used for spraying lubricating oil to the rotating shaft penetrating in the sleeve.

In an exemplary embodiment of the present disclosure, the lubrication assembly includes:

the nozzle is fixed on the inner periphery of the sleeve, faces the rotating shaft and is used for spraying lubricating oil to the rotating shaft;

the oil delivery pipeline is communicated with the nozzle and is used for delivering lubricating oil to the nozzle;

the oil return hole is positioned on the inner periphery of the sleeve and is arranged opposite to the nozzle in the radial direction of the sleeve;

and one end of the oil return pipeline is communicated with the oil return hole and used for discharging the lubricating oil recovered from the oil return hole.

In an exemplary embodiment of the present disclosure, the torsion measuring apparatus further includes:

and the displacement sensor is arranged on the inner periphery of the sleeve and used for measuring the axle center track of the rotating shaft.

In an exemplary embodiment of the present disclosure, the torsion measuring apparatus further includes:

and the sealing ring is coaxial with the sleeve and is in sealing connection with the first mounting plate and the second mounting plate, and the force bearing rib plate is positioned between the sealing ring and the check ring.

In an exemplary embodiment of the present disclosure, the torsion measuring apparatus further includes:

and the fastening piece axially penetrates through the first mounting plate and the retaining ring and is in threaded connection with the first mounting plate and the retaining ring.

In an exemplary embodiment of the present disclosure, the static calibration device includes a calibration weight and a calibration lever, the calibration weight is connected to the calibration lever through a pulley, and the calibration lever is connected to the sleeve through a screw.

According to an aspect of the present disclosure, there is provided a hydraulic dynamometer system including any one of the above torsion measuring devices, and

the flywheel is detachably connected with one side, away from the second mounting plate, of the first mounting plate;

the hydraulic dynamometer is detachably connected with one side, deviating from the first mounting plate, of the second mounting plate, and a rotating shaft of the hydraulic dynamometer penetrates through the sleeve and is connected with the flywheel.

According to the torsion measuring device and the hydraulic dynamometer system, the force bearing rib plate can generate micro deformation after bearing torque, the deformation amount of the force bearing rib plate can be detected through the strain gauge piece, the deformation amount is transmitted to the signal conversion assembly, and the deformation amount is calculated through the signal conversion assembly to obtain the torque. In the process, the torque mainly acts on the bearing rib plate, so that the bearing rib plate is the position with the largest deformation in the torque measurement process, the strain gauge is arranged on the bearing rib plate, the deformation can be accurately measured, and the torque measurement precision is further improved. In addition, the accessible retaining ring blocks external impurity, avoids external impurity deposit on the load gusset, reduces external impurity to the influence of foil gage detection precision, can improve the detection precision of foil gage, simultaneously, can avoid frequent impurity on clearance load gusset surface, reduces the maintenance cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 is a schematic view of a torsion measuring device according to an embodiment of the present disclosure.

FIG. 2 is a top view of a sleeve according to an embodiment of the present disclosure.

Fig. 3 is a cross-sectional view corresponding to fig. 2 taken along the direction a-a.

Fig. 4 is a cross-sectional view corresponding to the section taken along the direction B-B in fig. 3.

Fig. 5 is a schematic partial cross-sectional view of the sleeve corresponding to fig. 2.

In the figure: 1. a sleeve; 11. a first mounting plate; 111. mounting holes; 12. a second mounting plate; 13. a force bearing rib plate; 131. a bearing support; 2. a static calibration device; 21. calibrating a weight; 22. calibrating the lever; 3. a strain gauge; 4. a signal conversion component; 5. a retainer ring; 6. a nozzle; 62. an oil delivery pipeline; 63. an oil return hole; 64. an oil return line; 7. a displacement sensor; 8. a seal ring; 9. a tightening piece.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.

The disclosed embodiments provide a torsion measuring device, as shown in fig. 1-3, which may include a sleeve 1, a rotating shaft, a strain gauge 3, a signal conversion assembly 4, and a retainer ring 5, wherein:

the sleeve 1 can comprise a first mounting plate 11 and a second mounting plate 12 which are distributed in parallel and a force bearing rib plate 13 fixed between the first mounting plate 11 and the second mounting plate 12;

the static calibration device 2 can be connected with the sleeve 1 through bolts and can be used for applying torque to the force bearing rib plate 13;

the strain gauge 3 is arranged on the force bearing rib plate 13 and can be used for detecting the deformation generated after the force bearing rib plate 13 bears the torque;

the signal conversion component 4 is electrically connected with the strain gauge 3 and can be used for converting the deformation quantity detected by the strain gauge 3 into torque information;

the retainer ring 5 is detachably connected between the first mounting plate 11 and the second mounting plate 12 and can be coaxially arranged with the rotating shaft, and the retainer ring 5 is sleeved on the periphery of the force bearing rib plate 13.

According to the torsion measuring device, the bearing rib plate 13 can generate micro-deformation after bearing torque, the deformation amount of the bearing rib plate 13 can be detected through the strain gauge 3, the deformation amount is transmitted to the signal conversion assembly 4, and the deformation amount is calculated through the signal conversion assembly 4 to obtain the torque. In the process, the torque mainly acts on the bearing rib plate 13, so that the bearing rib plate 13 is the position with the largest deformation amount in the torque measuring process, the strain gauge 3 is arranged on the bearing rib plate 13, the deformation amount can be accurately measured, and the torque measuring precision is further improved. In addition, accessible retaining ring 5 blocks external impurity, avoids external impurity deposit on load gusset 13, reduces external impurity to the influence of foil gage 3 detection precision, can improve foil gage 3's detection precision, simultaneously, can avoid frequent impurity on clearance load gusset 13 surface, reduces the maintenance cost.

The following describes each part of the torsion measuring device according to the embodiment of the present disclosure in detail:

the sleeve 1 can comprise a first mounting plate 11, a second mounting plate 12 and a force bearing rib plate 13, wherein the first mounting plate 11 and the second mounting plate 12 can be of flat plate structures and can be distributed in parallel; the force bearing rib plate 13 can be fixed between the first mounting plate 11 and the second mounting plate 12, and the first mounting plate 11 and the second mounting plate 12 can be fixed together through the force bearing rib plate 13.

The first mounting plate 11 may be a circular plate, and the material thereof may be a metal, non-metal or alloy material, and of course, other materials may be used, which are not listed here. In order to facilitate assembly with other components, the first mounting plate 11 may be provided with a first through hole, which may penetrate along an axial direction of the first mounting plate 11 and may be disposed coaxially with the first mounting plate 11. The first through holes may be circular holes, elliptical holes or other hole-like structures, which are not listed here.

The second mounting plate 12 may also be a circular plate and may be coaxially distributed with the first mounting plate 11, and the material thereof may be the same as that of the first mounting plate 11, and in order to facilitate assembly with other components, the second mounting plate 12 may be provided with a second through hole, which may penetrate in the axial direction of the second mounting plate 12 and may be coaxially disposed with the first through hole, and the second through hole may have the same shape and the same aperture as the first through hole.

The force bearing rib plate 13 can be connected between the first mounting plate 11 and the second mounting plate 12, and the first mounting plate 11 and the second mounting plate 12 can be rigidly connected through the force bearing rib plate 13. The force bearing rib plate 13 can be annular and can be coaxially arranged with the first through hole and the second through hole. One end of the bearing rib plate 13 can be fixedly connected with the first mounting plate 11 through a bolt along the axial direction of the bearing rib plate, and the other end of the bearing rib plate is fixedly connected with the second mounting plate 12. In an embodiment, the first mounting plate 11, the second mounting plate 12 and the force bearing rib plate 13 can also be of an integrated structure, so that the structure is compact, and the support strength is good.

In an embodiment of the present disclosure, as shown in fig. 4, the rib support plate 13 may include a plurality of support columns 131, for example, 4, 6, 8, 10 or 12, or other numbers, which are not limited herein. The force bearing strut 131 may be rod-shaped, and the cross section thereof may be circular, rectangular, polygonal or irregular, and is not limited herein.

Each bearing support 131 can be arranged in parallel along the direction perpendicular to the first mounting plate 11 and the second mounting plate 12, and can be distributed at equal intervals along the circumferential direction, so as to ensure that the deformation of each bearing support 131 after bearing the torque is uniform and consistent. For example, the bearing rib plate 13 may be a multi-rib plate squirrel cage structure.

The static calibration device 2 can be connected with the sleeve 1 through bolts and is used for applying torque to the force bearing rib plate 13 so as to perform static calibration on the sleeve 1 and improve the measurement accuracy of the torsion measuring device. After static calibration, a static test can be performed, which results in a torque of 1250n.n with an accuracy of 0.2% FS. Dynamic testing was also performed, with a torque of 800n.n with a precision of 0.2% FS.

For example, the static calibration device 2 may include a calibration weight 21 and a calibration lever 22, the calibration weight 21 may be connected to the calibration lever 22 through a pulley, the calibration lever 22 may be connected to the sleeve 1 through a screw, and the sleeve 1 may be driven to rotate synchronously through the calibration lever 22 in the process of increasing or decreasing the calibration weight 21, so that the force-bearing rib plate 13 is deformed slightly.

The strain gauge 3 can be arranged on the force bearing rib plate 13 and can be used for detecting the deformation generated after the force bearing rib plate 13 bears the torque so as to calculate the torque. The strain gauge 3 can be fixed on the force-bearing rib plate 13 by welding, bonding, bolting, or the like, and of course, the strain gauge 3 can also be fixed on the force-bearing rib plate 13 by other methods, which is not limited herein.

The strain gauge 3 may be a sheet shape, which may be a circle, an ellipse, a rectangle, a polygon or other shapes, and is not limited herein. The strain gauge 3 may be a sensor that converts the deformation signal into an electrical signal. The strain gauges 3 can be multiple, and the multiple strain gauges 3 can be uniformly distributed on the force bearing rib plate 13. For example, when the rib 13 includes a plurality of supporting struts 131, at least one strain gauge 3 may be disposed on each supporting strut 131. The deformation quantity of each bearing support 131 can be respectively detected through each strain gauge 3.

In an embodiment of the present disclosure, two strain gauges 3 may be disposed on each force-bearing support column 131, and the two strain gauges 3 may be disposed on the side wall of the force-bearing support column 131 oppositely, so as to measure deformation amounts of different sides of the same force-bearing support column 131 respectively. It should be noted that the two strain gauges 3 may be located at the same height or different heights in the axial direction of the bearing support 131, and are not limited herein. For example, 8 bearing pillars are provided, 16 strain gauges are provided, and two strain gauges can be arranged on two side walls of each bearing pillar.

The signal conversion assembly 4 may be electrically connected to the strain gauge 3, and may be configured to receive the deformation amount detected by the strain gauge 3 and perform an operation on the deformation amount to convert the deformation amount into torque information. The signal conversion assembly 4 can be fixed on the first mounting plate 11 or the second mounting plate 12, the deformation quantity detected by the strain gauge 3 can be converted into a voltage signal through the signal conversion assembly 4, the voltage signal can be operated through a PLC (programmable logic controller) terminal signal processing unit in the signal conversion assembly to obtain torque information, and the torque information can be displayed through the display unit. For example, the signal conversion component 4 may be an integrated chip, which may be integrated in an aviation plug.

When there are a plurality of strain gauges 3, the strain gauges 3 can be electrically connected to the signal conversion module 4 through stress-strain bridges, and the stress-strain bridges can be insulated from each other to avoid short circuit. For example, the stress-strain bridges can be isolated by an insulating adhesive to prevent signal crosstalk from occurring in the stress-strain bridges.

Retaining ring 5 can be connected between first mounting panel 11 and second mounting panel 12 to can with the coaxial setting of sleeve 1, retaining ring 5 can overlap the periphery of locating load gusset 13, accessible retaining ring 5 blocks external impurity, avoid external impurity deposit on load gusset 13, reduce external impurity to the influence of foil gage 3 detection precision, both can improve foil gage 3's detection precision, can avoid the impurity on frequent clearance load gusset 13 surface again, reduce the maintenance cost.

The retainer ring 5 may be cylindrical, and the cross section thereof may be circular, oval, rectangular or irregular, and the material thereof may be a hard material, for example, it may be a metal or alloy material, or, of course, a material having a higher hardness, and the shape and the material of the retainer ring 5 are not particularly limited.

The retainer ring 5 is detachably connected to the first mounting plate 11, and specifically, it is screwed to the first mounting plate 11. In an embodiment, the torsion measuring device of the present disclosure may further include a fastening member 9, and the fastening member 9 may be axially disposed through the first mounting plate 11 and the retaining ring 5, so that the first mounting plate 11 and the retaining ring 5 are threadedly connected through the fastening member 9.

For example, the retainer ring 5 may be provided with positioning holes, which may be formed in the sidewall of the retainer ring 5 and may extend in the axial direction of the retainer ring 5, for example, they may be blind holes or through holes, and are not limited herein. The positioning hole can be a circular hole, and the inside of the positioning hole can be provided with threads.

The first mounting plate 11 may have a mounting hole 111 that matches the positioning hole of the retainer ring 5, and the mounting hole 111 may be a through hole and may pass through in the axial direction of the first mounting plate 11. For convenience of assembly, the shape and the diameter of the mounting hole 111 may be the same as those of the positioning hole. The tightening piece 9 can be passed through the mounting hole 111 and the positioning hole in order to fasten the retainer ring 5 to the first mounting plate 11.

The tightening member 9 may be in the form of a strip, which may have threads thereon, and may be in threaded connection with the mounting hole 111 and the positioning hole, and the material thereof may be metal, alloy or other material, as long as it is a hard structure. The tightening element 9 can be, for example, a bolt, but of course, also other components.

In one embodiment, the hydraulic dynamometer may be fixedly connected to the second mounting plate 12 of the torsion measuring disk, and in the process, the rotating shaft of the hydraulic dynamometer may extend into the sleeve 1 of the torsion measuring device. The torsion measuring device of the embodiment of the present disclosure may further include a lubricating assembly, which may be fixed between the first mounting plate 11 and the second mounting plate 12, and may be used to spray lubricating oil to the rotating shaft penetrating through the sleeve 1, so as to reduce the rotating friction force of the rotating shaft, reduce wear, and prolong the service life of the rotating shaft.

In one embodiment, the lubrication assembly may include a nozzle 61, a feed line 62, a return hole 63, and a return line 64, wherein:

the nozzles 61 may be fixed to the inner circumference of the sleeve 1, may be disposed toward the rotating shaft, and may be configured to spray the lubricant to the rotating shaft, and when there are a plurality of nozzles 61, the plurality of nozzles 61 may be uniformly distributed in an annular shape on the inner circumference of the sleeve 1, so as to uniformly spray the lubricant to each part of the rotating shaft. The nozzle 61 may have a circular, rectangular, polygonal or other shape, and is not particularly limited thereto.

The lubrication assembly of the present disclosure may further include a control valve, which may be a solenoid valve or an electric valve, and may be another type of control valve, and the control valve may be used to control the nozzle 61 to open or close. When there is one nozzle 61, the control valve may be one; when there are a plurality of nozzles 61, the number of control valves may also be multiple, and the number of control valves may match the number of nozzles 61, and each control valve may control each nozzle 61 to open or close in a one-to-one correspondence manner.

An oil feed line 62 may be in communication with nozzle 61 and may be used to feed lubricating oil to nozzle 61. For example, the main pipe and the branch pipes may be included and may be communicated with each other, and the number of the branch pipes may be determined according to the number of the nozzles 61, for example, the number of the branch pipes may be equal to the number of the nozzles 61, each branch pipe may be disposed in one-to-one correspondence with each nozzle 61, and each branch pipe may deliver the lubricating oil to the corresponding nozzle 61 in one-to-one correspondence. The main pipeline can be communicated with a plurality of branch pipelines simultaneously, lubricating oil can be conveyed to the branch pipelines through the main pipeline, the nozzles 61 can be arranged at the end parts of the branch pipelines in a one-to-one correspondence mode, and meanwhile, a plurality of control valves can be arranged on one sides of the nozzles 61 in a one-to-one correspondence mode so as to control the nozzles 61 to be opened or closed.

An oil return hole 63 may be provided in the sleeve 1 for discharging excess lubricating oil. In one embodiment, the oil return hole 63 may be disposed opposite to the nozzle 61 in a radial direction of the sleeve 1. The number of the oil return holes 63 may be one or more, and may be a circular hole, a rectangular hole, a polygonal hole, or a hole structure with other shapes, which is not particularly limited herein. The oil return hole 63 may communicate with the outside through an oil return line 64. Namely: one end of the oil return line 64 may communicate with the oil return hole 63, and the lubricating oil recovered from the oil return hole 63 may be discharged through the oil return line 64.

The torsion measuring device of the present disclosure may further include a sealing ring 8, the sealing ring 8 may be cylindrical and may be disposed coaxially with the sleeve 1, and the cross section thereof may be circular, elliptical, rectangular or irregular, and is not particularly limited herein. In one embodiment, the outer wall of the sealing ring 8 may match the shape of the first and second through holes. The sealing ring 8 can be made of an elastic material, and the sealing ring 8 can be hermetically connected with the first through hole of the first mounting plate 11 and the second through hole of the second mounting plate 12 by adopting sealant. At this moment, load gusset 13 is located between sealing washer 8 and the retaining ring 5 to accessible retaining ring 5 blocks external impurity, avoids external impurity to adhere to load gusset 13 surface, and simultaneously, accessible sealing washer 8 blocks lubricating oil or other oil stains in sleeve 1 and adheres to load gusset 13 surface, reduces impurity and oil stain to the influence of foil gage 3 detection precision, can further improve foil gage 3's detection precision, and simultaneously, the clean and cost of maintaining of reduction equipment.

The torsion measuring device of the present disclosure may further include a displacement sensor 7, as shown in fig. 5, the displacement sensor 7 may be disposed on the inner periphery of the sleeve 1, and may be used to measure the axis locus of the rotating shaft, so as to evaluate the vibration resistance of the rotating shaft.

The displacement sensor 7 can be connected with an integrated chip in the aviation plug, and can transmit the detected axis track information to the integrated chip so as to perform data analysis. The number of the displacement sensors 7 may be one, or may be multiple, for example, it may be 1, 2, 3, or 4, or of course, it may be other numbers, and is not limited herein. For example, the number of the displacement sensors 7 may be two, and the two displacement sensors 7 may be vertically disposed so as to detect displacement information of the rotation axis in a plurality of directions, improving detection accuracy.

The present disclosure also provides a hydraulic dynamometer system including the torque measuring device of any of the above embodiments, and

the flywheel is detachably connected with one side, away from the second mounting plate 12, of the first mounting plate 11;

the hydraulic dynamometer, with second mounting panel 12 deviates from the connection can be dismantled to one side of first mounting panel 11, and the pivot of hydraulic dynamometer can pass sleeve 1 with the flywheel is connected.

According to the hydraulic dynamometer system, the rotating shaft of the hydraulic dynamometer can be driven to rotate through the flywheel, so that the output power of the aircraft engine is absorbed and the output quantity of the engine power is controlled through the hydraulic dynamometer, and meanwhile, the torque of the hydraulic dynamometer can be measured through the torque measuring device. The structure and the advantages of the torsion measuring device can be referred to the torsion measuring device in the above embodiments, and will not be described in detail here.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. A torsion measuring device, comprising:

the sleeve comprises a first mounting plate and a second mounting plate which are distributed in parallel and a force bearing rib plate fixed between the first mounting plate and the second mounting plate;

the static calibration device is connected with the sleeve through a bolt and is used for applying torque to the force bearing rib plate;

the strain gauge is arranged on the force bearing rib plate and used for detecting the deformation quantity generated after the force bearing rib plate bears the torque;

the signal conversion assembly is electrically connected with the strain gauge and is used for converting the deformation quantity detected by the strain gauge into torque information;

and the check ring is detachably connected between the first mounting plate and the second mounting plate and is coaxially arranged with the sleeve, and the check ring is sleeved on the periphery of the force bearing rib plate.

2. The torsion measuring device according to claim 1, wherein the force bearing rib plate comprises a plurality of force bearing struts, the force bearing struts are uniformly distributed along the circumferential direction, and at least one strain gauge is arranged on each force bearing strut.

3. The torsion measuring device according to claim 2, wherein two strain gauges are arranged on each force bearing support, and the two strain gauges are oppositely arranged on the side wall of the force bearing support.

4. The torsion measuring apparatus according to claim 1, further comprising:

and the lubricating assembly is fixed between the first mounting plate and the second mounting plate and used for spraying lubricating oil to the rotating shaft penetrating in the sleeve.

5. The torsion device according to claim 4, wherein the lubricating assembly comprises:

the nozzle is fixed on the inner periphery of the sleeve, faces the rotating shaft and is used for spraying lubricating oil to the rotating shaft;

the oil delivery pipeline is communicated with the nozzle and is used for delivering lubricating oil to the nozzle;

the oil return hole is positioned on the inner periphery of the sleeve and is arranged opposite to the nozzle in the radial direction of the sleeve;

and one end of the oil return pipeline is communicated with the oil return hole and used for discharging the lubricating oil recovered from the oil return hole.

6. The torsion measuring apparatus according to claim 4, further comprising:

and the displacement sensor is arranged on the inner periphery of the sleeve and used for measuring the axle center track of the rotating shaft.

7. A torsion measuring device according to any of claims 1-6, wherein the torsion measuring device further comprises:

and the sealing ring is coaxial with the sleeve and is in sealing connection with the first mounting plate and the second mounting plate, and the force bearing rib plate is positioned between the sealing ring and the check ring.

8. A torsion measuring device according to any of claims 1-6, wherein the torsion measuring device further comprises:

and the fastening piece axially penetrates through the first mounting plate and the retaining ring and is in threaded connection with the first mounting plate and the retaining ring.

9. A torsion measuring device according to any one of claims 1-6, wherein the static calibration device comprises a calibration weight and a calibration lever, the calibration weight is connected with the calibration lever through a pulley, and the calibration lever is connected with the sleeve through a screw.

10. A hydraulic dynamometer system comprising a torsion measuring device according to any one of claims 1 to 9, and

the flywheel is detachably connected with one side, away from the second mounting plate, of the first mounting plate;

the hydraulic dynamometer is detachably connected with one side, deviating from the first mounting plate, of the second mounting plate, and a rotating shaft of the hydraulic dynamometer penetrates through the sleeve and is connected with the flywheel.

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