Non-contact Strain Measurement Device and Method for Rubber Crawler Drive Teeth

Abstract

The present invention belongs to the field of non-contact strain measurement, and in particular relates to a non-contact strain measurement device and method for rubber track drive teeth. The measuring device includes a CCD camera, a connecting mechanism, an optical terminal, a fiber optic slip ring, and a mobile workstation. The CCD camera is used to capture images of the drive teeth; the connecting mechanism is used to adjust the position of the CCD camera and support other components; the optical terminal is used to convert digital images into fiber optic signals; the rotor of the fiber optic slip ring is electrically connected to the optical terminal through a cable, and the stator is electrically connected to the mobile workstation through a cable; the mobile workstation is used to receive the fiber optic signal transmitted by the optical terminal and perform data analysis and processing on the fiber optic signal. The present invention aims to accurately and in real time measure the strain of the rubber track drive teeth, provide experimental data support for the optimization design of rubber track machinery or vehicle structures and the improvement of rubber track performance, and avoid the serious consequences of track drive teeth breaking, cracking, jumping, and belt derailment.

Description

Technical Field

[0001] The present invention belongs to the field of non-contact strain measurement, and in particular relates to a non-contact strain measurement device and method for a rubber track drive tooth. Background Art

[0002] Rubber tracked self-propelled machinery or vehicles can be divided into friction drive type and forced drive type according to the different drive modes of the tracks. Among them, friction drive type rubber tracks mainly rely on the friction surface between the inner surface of the track and the drive wheel to transmit the driving force, while forced drive type rubber tracks mainly rely on the meshing of the drive teeth of the track and the drive gear to transmit the driving force.

[0003] During the travel of a vehicle with a forced-drive rubber track, the deformation and strain of the rubber track drive teeth under the action of the drive wheel are important factors affecting the vehicle's driving performance and the life of the rubber track. Irrational deformation and strain of the rubber track drive teeth can easily lead to serious consequences such as broken teeth, cracked teeth, skipped teeth, and belt derailment. To avoid this, it is necessary to accurately determine in real time whether the strain of the rubber track drive teeth is within the normal threshold range while the vehicle is moving. However, there is currently no feasible technical solution in the existing technology that can accurately and real-time measure the strain of the rubber track drive teeth of a moving vehicle.

[0004] Therefore, there is an urgent need for a technical solution that can accurately and real-timely measure the strain of the rubber track driving teeth of a moving rubber track vehicle to solve the above problems. Summary of the Invention

[0005] The present invention proposes a non-contact strain measurement device and method for rubber track drive teeth. The device aims to accurately and in real time measure the strain of the rubber track drive teeth of a moving rubber tracked self-propelled machine or vehicle, obtaining the actual strain of the meshing drive teeth. This provides experimental data support for the structural optimization design of the rubber track machine or vehicle and the improvement of rubber track performance, thereby avoiding the serious consequences of track drive tooth breakage, cracking, tooth jumping, and belt derailment. The specific contents of the invention are as follows:

[0006] A non-contact strain measurement device for a rubber track drive gear is installed on one side of the drive shaft of a rubber track vehicle and includes a CCD camera, a connecting mechanism, an optical terminal, an optical fiber slip ring, and a mobile workstation;

[0007] The CCD camera is set at the top of the connecting mechanism to capture the image of the rubber track driving teeth;

[0008] The connecting mechanism is an adjustable structure, which is arranged at one end of the driving shaft of the rubber track vehicle and is used to adjust the position of the CCD camera and support the CCD camera, optical terminal and optical fiber slip ring;

[0009] The optical terminal is arranged on the upper end surface of the connecting mechanism away from the driving shaft of the rubber track vehicle, and is used to convert the digital image collected by the CCD camera into an optical fiber signal;

[0010] The optical fiber slip ring is arranged on the side wall of the connection mechanism away from the drive shaft of the rubber track vehicle, and includes a stator and a rotor; the rotor is electrically connected to the optical terminal through a cable, and the stator is electrically connected to the mobile workstation through a cable;

[0011] A mobile workstation is used to receive optical fiber signals transmitted by an optical terminal and perform data analysis and processing on the optical fiber signals.

[0012] In an embodiment of the present invention, the connecting mechanism includes a connecting shaft; the connecting shaft is set to several sizes to adapt to different models of rubber track vehicles; the connecting shaft is connected to the drive shaft of the rubber track vehicle along the axial direction, and a connecting disk is provided at one end away from the drive shaft of the rubber track vehicle; the connecting disks of several connecting shafts have the same size specifications.

[0013] In an embodiment of the present invention, the connecting mechanism also includes a base; one end of the base close to the drive shaft of the rubber track vehicle is connected to the connecting disk, and the side wall of the other end is provided with a hollow cylindrical connecting end; the upper end surface of the base is provided with a plurality of axial adjustment holes for adjusting the position; the optical terminal is fixed on the upper end surface of the base.

[0014] In an embodiment of the present invention, a through hole is provided on the side wall of the connection end; the through hole is used for wiring the cable connecting the optical terminal and the rotor.

[0015] In an embodiment of the present invention, the connecting mechanism also includes an inner sleeve; the inner sleeve is arranged on the upper end surface of the base, fixed on the base according to the position of the axial adjustment hole, and an outer sleeve is installed telescopically along its vertical direction; a number of radial adjustment holes are provided at corresponding positions of the inner sleeve and the outer sleeve; the outer sleeve is fixed to the inner sleeve according to the position of the radial adjustment hole.

[0016] In an embodiment of the present invention, the CCD camera is fixed on the top of the outer sleeve and is electrically connected to the optical terminal through a cable, and the number of the CCD camera is greater than or equal to 2.

[0017] In an embodiment of the present invention, a supporting beam is fixedly provided at the top end of the outer sleeve; and CCD cameras are provided at both ends of the supporting beam, with their lenses facing the rubber track driving teeth.

[0018] In an embodiment of the present invention, one end of the rotor close to the base is fixed to the connecting end along the axial direction, and one end of the rotor away from the base is rotatably connected to the stator.

[0019] The non-contact strain measurement method for a rubber track drive tooth is applied to a non-contact strain measurement device for a rubber track drive tooth. The specific method includes:

[0020] S1, the CCD camera collects the image information parameters of the rubber track drive tooth with sprayed speckles and the identification plate marked with coding points, non-coding points and two scales, and establishes the world coordinate system of the CCD camera to determine the three-dimensional coordinates of the seed point on the end face of the rubber track drive tooth under test;

[0021] S2, using a CCD camera to obtain the meshing image data information of the rubber track drive gear;

[0022] S3, transmitting the rubber track drive gear meshing image data information to the optical terminal through the cable to obtain the optical terminal image data information;

[0023] S4, using an optical terminal to convert the optical end image data information into an optical fiber signal to obtain an optical fiber signal of the rubber track drive gear engagement image;

[0024] S5, transmitting the rubber track driving gear engagement image optical fiber signal to the mobile workstation;

[0025] S6, using the optical fiber signal converter of the mobile workstation to process the optical fiber signal of the rubber track drive gear meshing image to obtain a digital signal of the rubber track drive gear meshing image;

[0026] S7, using the strain data analysis model of the mobile workstation, processing the rubber track drive gear meshing image digital signal to obtain the rubber track drive gear meshing strain analysis result.

[0027] In an embodiment of the present invention, the strain data analysis model of the mobile workstation is used to process the digital signal of the rubber track drive gear meshing image to obtain the rubber track drive gear meshing strain analysis results, including:

[0028] S71, using a strain data analysis model to process the first obtained digital signal of the rubber track drive tooth meshing image to obtain a first three-dimensional coordinate value of the seed point;

[0029] S72, using a strain data analysis model to process the second obtained digital signal of the rubber track drive tooth meshing image to obtain a second three-dimensional coordinate value of the seed point;

[0030] S73, using a strain data analysis model to process the digital signal of the rubber track drive tooth meshing image obtained for the Nth time to obtain the Nth three-dimensional coordinate value of the seed point, where N is an integer greater than or equal to 3;

[0031] S74, using the strain variable data analysis model, establish three strain variable coordinate systems with time as the horizontal coordinate and the three-dimensional coordinate values of the seed point X, Y, and Z as the vertical coordinates;

[0032] S75, using the strain data analysis model, the obtained three-dimensional coordinate values are marked to the corresponding strain coordinate system respectively, and the strain change curves in three directions of each seed point are obtained, that is, the rubber track drive tooth meshing strain change curve is obtained, which provides a data reference for the strain measurement of the rubber track drive tooth.

[0033] The present invention has the beneficial effect of using a CCD camera for non-contact measurement of drive tooth strain, enabling real-time and accurate measurement of meshing drive teeth while a rubber track vehicle is moving, thereby obtaining the actual strain of the meshing drive teeth. The measurement results can provide experimental data support for the optimization design of rubber track machinery or vehicle structures and the improvement of rubber track performance, thereby avoiding the serious consequences of track drive tooth breakage, cracking, tooth jumping, and belt debonding. The non-contact strain measurement method provided by the present invention can accurately and real-timely measure the strain of rubber track drive teeth without damaging the rubber track drive tooth structure. The CCD camera is supported by a connecting mechanism and adopts an adjustable structure to accurately capture images of the drive teeth to be measured. The digital signal collected by the CCD is converted into an optical fiber signal by an optical terminal, enabling rapid and lossless data transmission to meet the needs of real-time measurement. Fiber optic slip rings can be used to achieve optical fiber data transmission between the rotating and fixed parts, avoiding the problem of data cable entanglement caused by real-time measurement. The mobile workstation is used for data processing, and the image information obtained can be processed in real time, allowing on-board measurement at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of the overall structure of the rubber track drive gear non-contact strain measurement device in the measurement state;

[0036] Figure 2 This is a schematic diagram of the overall structure of the assembled non-contact strain measurement device for rubber track drive teeth;

[0037] Figure 3 Schematic diagram of the connection mechanism of the non-contact strain measurement device for rubber track drive teeth;

[0038] Figure 4 This is a schematic diagram of the connecting shaft structure of the rubber track drive gear non-contact strain measurement device;

[0039] Figure 5This is a schematic diagram of the base structure of the rubber track drive gear non-contact strain measurement device;

[0040] Figure 6 This is a schematic diagram of the inner sleeve structure of the rubber track drive gear non-contact strain measurement device;

[0041] Figure 7 This is a schematic diagram of the outer sleeve structure of the rubber track drive gear non-contact strain measurement device;

[0042] Figure 8 Schematic diagram of the optical fiber slip ring structure of the rubber track drive gear non-contact strain measurement device;

[0043] Figure 9 This is a schematic diagram of the connection structure between the optical fiber slip ring and the base of the rubber track drive gear non-contact strain measurement device;

[0044] Figure 10 Schematic diagram of the measurement principle of the non-contact strain measurement device for rubber track drive teeth.

[0045] In the figure, A. rubber track; B. rubber track driving teeth; C. rubber track vehicle driving shaft; D. driving direction; E. entering the meshing area; F. exiting the meshing area; G. acquisition area; 1. CCD camera; 2. connecting mechanism; 201. connecting shaft; 202. base; 203. connecting end; 204. inner sleeve; 205. outer sleeve; 206. supporting beam; 207. connecting plate; 208. axial adjustment hole; 209. radial adjustment hole; 3. optical terminal; 4. optical fiber slip ring; 401. rotor; 402. stator; 5. mobile workstation. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] Figures 1 to 10 The specific structure of the non-contact strain measuring device for rubber track drive teeth provided by the present invention is shown. According to the specific embodiment provided by the present invention, Figure 1 It can be seen that the measuring device is arranged on one side of the driving shaft C of the rubber track vehicle, and includes a CCD camera 1, a connecting mechanism 2, an optical terminal 3, a fiber optic slip ring 4 and a mobile workstation 5.

[0050] The CCD camera 1 is arranged at the top of the connecting mechanism 2 and is used to collect images of the driving teeth B of the rubber track.

[0051] The connecting mechanism 2 is an adjustable structure, which is arranged at one end of the driving shaft C of the rubber track vehicle, and is used to adjust the position of the CCD camera 1 and support the CCD camera 1, the optical terminal 3 and the optical fiber slip ring 4.

[0052] The optical terminal 3 is arranged on the upper end surface of the connecting mechanism 2 away from the driving shaft C of the rubber track vehicle, and is used to convert the digital image collected by the CCD camera 1 into an optical fiber signal.

[0053] The optical fiber slip ring 4 is arranged on the side wall of the connecting mechanism 2 away from the end of the rubber track vehicle drive shaft C, and includes a stator 402 and a rotor 401; the rotor 401 is electrically connected to the optical terminal 3 through a cable, and the stator 402 is electrically connected to the mobile workstation 5 through a cable.

[0054] The mobile workstation 5 is used to receive the optical fiber signal transmitted by the optical terminal 3 and perform data analysis and processing on the optical fiber signal.

[0055] According to an embodiment of the present invention, referring to Figure 2 , the number of CCD cameras 1 is greater than or equal to 2; in implementation, two CCD cameras 1 are preferably used to establish a three-dimensional coordinate system so that strain quantities in three directions can be collected.

[0056] According to an embodiment of the present invention, referring to Figure 3 The connecting mechanism 2 includes a connecting shaft 201, a base 202, and an inner sleeve 204. The connecting shaft 201 is provided with several sizes to accommodate different types of rubber track vehicles; Figure 4As shown, the connecting shaft 201 is connected to the driving shaft C of the rubber track vehicle along the axial direction, and a connecting disk 207 is provided at one end thereof away from the driving shaft C of the rubber track vehicle; the connecting disks 207 of several connecting shafts 201 have the same size specifications.

[0057] During the implementation of the present invention, a variety of connecting shafts 201 of different sizes and models are configured. The different sizes and models here refer to the diameter, thread type, etc. of the connecting shaft 201, which can be adapted to the drive shafts of different models of rubber crawler machinery or vehicles, so that the measuring device can adapt to the testing of more models, but the connecting plates 207 of the connecting shafts 201 of different sizes and specifications are all the same size so that they can be adapted and connected with the base 202.

[0058] According to an embodiment of the present invention, referring to Figure 5 One end of the base 202 close to the rubber track vehicle drive shaft C is connected to the connecting plate 207, and the side wall of the other end is provided with a hollow cylindrical connecting end 203. The side wall of the connecting end 203 is provided with a through hole, which is used for wiring the cable connecting the optical terminal 3 and the rotor 401.

[0059] In a specific implementation process, a through hole is provided on the side wall of the connection end 203 to reserve wiring space for the cable, and the cable arranged in the through hole can play a certain limiting role.

[0060] The upper end surface of the base 202 is provided with several axial adjustment holes 208 for adjusting the position. The adjustment holes are preferably arranged in two rows to better fix the upper components. The optical terminal 3 is fixed to the upper end surface of the base 202. The optical terminal 3 is also fixed to the base 202 through the axial adjustment holes 208 and screws, but no position adjustment is required.

[0061] During implementation, the axial adjustment hole 208 is used to adjust the axial position of the CCD camera 1 , that is, to adjust the distance between the CCD camera 1 and the driving tooth to be measured, so as to better determine the range of the captured image.

[0062] According to an embodiment of the present invention, referring to Figure 6 The inner sleeve 204 is arranged on the upper end surface of the base 202 and is fixed on the base 202 according to the position of the axial adjustment hole 208. During the implementation process, it is preferred to use screws to fix the inner sleeve 204 on the axial adjustment hole 208.

[0063] In another embodiment, the above adjustment method may also adopt a slide rail type adjustment structure, that is, two parallel slide rails are provided on the upper end surface of the base 202, a slide groove matching the slide rails is provided on the lower end surface of the inner sleeve 204, and a fixing mechanism is provided on the slide groove. This structure can more accurately adjust the axial position of the CCD camera 1.

[0064] According to an embodiment of the present invention, referring to Figure 7An outer sleeve 205 is mounted vertically and retractably along the inner sleeve 204. Several radial adjustment holes 209 are provided at corresponding positions on the inner sleeve 204 and outer sleeve 205. Outer sleeve 205 is secured to inner sleeve 204 according to the positions of the radial adjustment holes 209. A CCD camera 1 is secured to the top of outer sleeve 205 and is electrically connected to optical terminal 3 via a cable.

[0065] During implementation, the inner sleeve 204 and the outer sleeve 205 are preferably fixed by screws passing through corresponding radial adjustment holes 209. The telescopic distance between the inner sleeve 204 and the outer sleeve 205 can be adjusted according to the position of the radial adjustment holes 209 to adjust the height of the CCD camera 1, thereby obtaining a more accurate measurement image.

[0066] In another embodiment of the present invention, a support beam 206 is fixedly provided on the top of the outer sleeve 205 ; a CCD camera 1 is provided at both ends of the support beam 206 , with its lens facing the driving gear B of the rubber track.

[0067] During implementation, by fixing two CCD cameras 1 at both ends of the supporting beam 206 , the working position of the CCD camera 1 can be maintained more stably, especially improving stability during measurement during operation.

[0068] According to an embodiment of the present invention, referring to Figure 8 and Figure 9 The end of the rotor 401 of the optical fiber slip ring 4 close to the base 202 is fixed to the connecting end 203 along the axial direction, and the end away from the base 202 is rotatably connected to the stator 402.

[0069] In practice, the fiber optic slip ring 4, with its rotor 401 and stator 402, effectively resolves the contradiction between the measurement device rotating with the drive shaft during real-time measurement while the cable and mobile workstation 5 remain stationary. Furthermore, fiber optic signal transmission allows for faster and more accurate data transmission, ensuring real-time and accurate measurements.

[0070] The non-contact strain measurement method for a rubber track drive tooth is applied to a non-contact strain measurement device for a rubber track drive tooth. The specific method includes:

[0071] S1, the CCD camera collects the image information parameters of the rubber track drive tooth with sprayed speckles and the identification plate marked with coding points, non-coding points and two scales, and establishes the world coordinate system of the CCD camera to determine the three-dimensional coordinates of the seed point on the end face of the rubber track drive tooth under test;

[0072] S2, using a CCD camera to obtain the meshing image data information of the rubber track drive gear;

[0073] S3, transmitting the rubber track drive gear meshing image data information to the optical terminal through the cable to obtain the optical terminal image data information;

[0074] S4, using an optical terminal to convert the optical end image data information into an optical fiber signal to obtain an optical fiber signal of the rubber track drive gear engagement image;

[0075] S5, transmitting the rubber track driving gear engagement image optical fiber signal to the mobile workstation;

[0076] S6, using the optical fiber signal converter of the mobile workstation to process the optical fiber signal of the rubber track drive gear meshing image to obtain a digital signal of the rubber track drive gear meshing image;

[0077] S7, using the strain data analysis model of the mobile workstation, processing the rubber track drive gear meshing image digital signal to obtain the rubber track drive gear meshing strain analysis result.

[0078] The strain data analysis model of the mobile workstation is used to process the digital signal of the rubber track drive gear meshing image to obtain the strain analysis results of the rubber track drive gear meshing, including:

[0079] S71, using a strain data analysis model to process the first obtained digital signal of the rubber track drive tooth meshing image to obtain a first three-dimensional coordinate value of the seed point;

[0080] S72, using a strain data analysis model to process the second obtained digital signal of the rubber track drive tooth meshing image to obtain a second three-dimensional coordinate value of the seed point;

[0081] S73, using a strain data analysis model to process the digital signal of the rubber track drive tooth meshing image obtained for the Nth time to obtain the Nth three-dimensional coordinate value of the seed point, where N is an integer greater than or equal to 3;

[0082] S74, using the strain variable data analysis model, establish three strain variable coordinate systems with time as the horizontal coordinate and the three-dimensional coordinate values of the seed point X, Y, and Z as the vertical coordinates;

[0083] S75, using the strain data analysis model, the obtained three-dimensional coordinate values are marked to the corresponding strain coordinate system respectively, and the strain change curves in three directions of each seed point are obtained, that is, the rubber track drive tooth meshing strain change curve is obtained, which provides a data reference for the strain measurement of the rubber track drive tooth.

[0084] In specific implementation, the device needs to be assembled and debugged before measurement. The specific operations are as follows:

[0085] 1. It is necessary to select a connecting shaft 201 of a suitable size from among several sizes of connecting shafts 201 according to the size of the driving shaft C of the rubber track vehicle.

[0086] 2. Fix the inner sleeve 204 , the outer sleeve 205 and the selected connecting shaft 201 to the base 202 .

[0087] 3. Fix the base 202 to one end of the drive shaft C of the rubber track vehicle along the axial direction.

[0088] 4. Fix the CCD camera 1 to both ends of the support beam 206 , and fix the support beam 206 to the top of the outer sleeve 205 , fix the optical terminal 3 to the upper end surface of the base 202 , and fix the optical fiber slip ring 4 to the connecting end 203 .

[0089] 5. Use cables to electrically connect the CCD camera 1, optical terminal 3, optical fiber slip ring 4 and mobile workstation 5.

[0090] 6. Use the axial adjustment hole 208 and the radial adjustment hole 209 to adjust the axial and radial positions of the CCD camera 1 to obtain a clear strain image of the rubber track drive tooth B.

[0091] 7. Use sandpaper to smooth the tested end surface of the rubber track drive tooth B and spray speckle on the surface.

[0092] 8. Place the identification plate on one side of the rubber track drive tooth B, and use CCD camera 1 to capture images of the identification plate and the rubber track drive tooth B to be measured to calibrate the measurement position.

[0093] 9. Use the constructed non-contact strain measurement device of the rubber track drive tooth B to measure the strain of the rubber track drive tooth B during driving.

[0094] According to an embodiment of the present invention, referring to Figure 10 When the drive tooth under test moves along the rubber track from the meshing area E to the exiting meshing area F, the drive tooth will produce strain. Therefore, the acquisition area G should include the position between the entry and exit meshing areas E and F. After determining the acquisition area G, the position of CCD camera 1 is adjusted so that the viewing range of CCD camera 1 is located in the middle of the acquisition area G. After the measurement begins, CCD camera 1 rotates with the drive shaft via connecting mechanism 2, ensuring that the acquisition area G remains within the viewing range during the meshing process of the drive tooth under test. If the drive tooth under test moves outside the acquisition area G, CCD camera 1 will not be able to capture image information of the drive tooth under test.

[0095] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0096] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A non-contact strain measurement device for a rubber track drive tooth, characterized in that: The measuring device is arranged on one side of the driving shaft of the rubber track vehicle and includes a CCD camera, a connecting mechanism, an optical terminal, an optical fiber slip ring and a mobile workstation; The CCD camera is arranged at the top of the connecting mechanism, the number of which is greater than or equal to 2, and is used to collect images of the rubber track driving teeth; The connecting mechanism is an adjustable structure, which is provided at one end of the driving shaft of the rubber track vehicle and is used to adjust the position of the CCD camera and support the CCD camera, optical terminal and optical fiber slip ring; The optical terminal is arranged on the upper end surface of the connecting mechanism away from the driving shaft of the rubber track vehicle, and is used to convert the digital image collected by the CCD camera into an optical fiber signal; The optical fiber slip ring is arranged on the side wall of the connecting mechanism away from the end of the driving shaft of the rubber track vehicle, and includes a stator and a rotor; the rotor is electrically connected to the optical terminal through a cable, and the stator is electrically connected to the mobile workstation through a cable; The mobile workstation is used to receive the optical fiber signal transmitted by the optical terminal and perform data analysis and processing on the optical fiber signal.

2. The non-contact strain measurement device for rubber track drive teeth according to claim 1, characterized in that: The connecting mechanism includes a connecting shaft; the connecting shaft is provided in several sizes to adapt to different models of the rubber tracked vehicles; the connecting shaft is connected to the drive shaft of the rubber tracked vehicle along the axial direction, and a connecting disk is provided at one end thereof away from the drive shaft of the rubber tracked vehicle; the connecting disks of several types of the connecting shafts have the same size specifications.

3. The non-contact strain measurement device for rubber track drive teeth according to claim 2, characterized in that: The connecting mechanism also includes a base; one end of the base close to the rubber track vehicle drive shaft is connected to the connecting disk, and the side wall of the other end is provided with a hollow cylindrical connecting end; the upper end surface of the base is provided with a plurality of axial adjustment holes for adjusting the position; the optical terminal is fixed on the upper end surface of the base.

4. The non-contact strain measurement device for rubber track drive teeth according to claim 3, characterized in that: A through hole is provided on the side wall of the connection end; the through hole is used for wiring the cable connecting the optical terminal and the rotor.

5. The non-contact strain measurement device for rubber track drive teeth according to claim 4, characterized in that: One end of the rotor close to the base is fixed to the connecting end along the axial direction, and one end of the rotor away from the base is rotatably connected to the stator.

6. The non-contact strain measurement device for rubber track drive teeth according to claim 4, characterized in that: The connecting mechanism also includes an inner sleeve; the inner sleeve is arranged on the upper end surface of the base, fixed on the base according to the position of the axial adjustment hole, and an outer sleeve is installed telescopically along its vertical direction; a plurality of radial adjustment holes are provided at corresponding positions of the inner sleeve and the outer sleeve; the outer sleeve is fixed to the inner sleeve according to the position of the radial adjustment holes.

7. The non-contact strain measurement device for rubber track drive teeth according to claim 6, characterized in that: The CCD camera is fixed on the top of the outer sleeve and is electrically connected to the optical terminal through a cable.

8. The non-contact strain measurement device for rubber track drive teeth according to claim 6, characterized in that: A supporting beam is fixedly provided on the top of the outer sleeve; the CCD camera is arranged at both ends of the supporting beam, with its lens facing the rubber track driving teeth.

9. A non-contact strain measurement method for a rubber track drive tooth, characterized in that: The non-contact strain measuring device for rubber track drive teeth according to any one of claims 1 to 8 is used, and the method comprises: S1, the CCD camera establishes a world coordinate system of the CCD camera by collecting image information parameters of the rubber track drive tooth with sprayed speckles and an identification plate marked with coding points, non-coding points, and two scale information, so as to determine the three-dimensional coordinates of the seed point on the end surface of the rubber track drive tooth being measured; S2, using the CCD camera to obtain the meshing image data information of the rubber track drive gear; S3, transmitting the rubber track drive gear meshing image data information to the optical terminal through a cable to obtain optical terminal image data information; S4, using the optical terminal to convert the optical end image data information into an optical fiber signal to obtain an optical fiber signal of the rubber track drive gear engagement image; S5, transmitting the rubber track drive gear engagement image optical fiber signal to the mobile workstation; S6, using the optical fiber signal converter of the mobile workstation to process the optical fiber signal of the rubber track drive gear meshing image to obtain a digital signal of the rubber track drive gear meshing image; S7, using the strain data analysis model of the mobile workstation to process the rubber track drive gear engagement image digital signal to obtain a rubber track drive gear engagement strain change curve.

10. The non-contact strain measurement method of a rubber track driving tooth according to claim 9, characterized in that: The strain data analysis model of the mobile workstation is used to process the digital signal of the rubber track drive gear meshing image to obtain a rubber track drive gear meshing strain change curve, including: S71, using the strain data analysis model to process the first obtained digital signal of the rubber track drive tooth engagement image to obtain a first three-dimensional coordinate value of the seed point; S72, using the strain data analysis model to process the second obtained digital signal of the rubber track drive tooth engagement image to obtain a second three-dimensional coordinate value of the seed point; S73, using the strain data analysis model to process the digital signal of the rubber track drive tooth meshing image obtained for the Nth time to obtain the Nth three-dimensional coordinate value of the seed point, where N is an integer greater than or equal to 3; S74, using the strain variable data analysis model, establishing three strain variable coordinate systems with time as the horizontal coordinate and the three-dimensional coordinate values of X, Y, and Z of the seed point as the vertical coordinates; S75, using the strain data analysis model, the obtained three-dimensional coordinate values are respectively marked to the corresponding strain coordinate system, and the strain change curves in the three directions of each seed point are obtained, that is, the rubber track drive tooth engagement strain change curve is obtained, providing a data reference for the strain measurement of the rubber track drive tooth.

Images