CN116202440A - Deep water DIC test system based on flexible watertight - Google Patents
Deep water DIC test system based on flexible watertight Download PDFInfo
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- CN116202440A CN116202440A CN202310116031.2A CN202310116031A CN116202440A CN 116202440 A CN116202440 A CN 116202440A CN 202310116031 A CN202310116031 A CN 202310116031A CN 116202440 A CN116202440 A CN 116202440A
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 27
- 230000008054 signal transmission Effects 0.000 claims abstract description 37
- 239000011521 glass Substances 0.000 claims description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 16
- 239000010949 copper Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/161—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means
- G01B11/162—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by interferometric means by speckle- or shearing interferometry
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Studio Devices (AREA)
Abstract
The invention relates to a deepwater DIC test system based on flexible watertight, which comprises a pressure-resistant shell, an observation device, a signal transmission device, a watertight device, a camera clamping device, a shell fixing device, a T-shaped frame, a DIC camera and a control console, wherein the shell fixing device is fixedly arranged at the upper part of the T-shaped frame, the pressure-resistant shell is arranged at the upper part of the shell fixing device, the camera clamping device is arranged in the pressure-resistant shell, the DIC camera is fixedly clamped by the camera clamping device, the observation device is arranged at the front end of the pressure-resistant shell, the signal transmission device and the watertight device are arranged at the rear end of the pressure-resistant shell, and the DIC camera is connected with the control console through a data line. The invention provides a safe working environment for the DIC system in a deep sea 1500m environment, a flexible watertight device is used for guaranteeing the watertightness of the camera protection device, and the camera protection device provides two degrees of freedom rotation for the camera rotation degree problem required by the DIC system in calibration, so that the calibration problem of the DIC system is fully solved.
Description
Technical Field
The invention relates to the technical field of underwater protection of DIC systems, in particular to a flexible watertight-based deepwater DIC test system.
Background
In order to accelerate the pace of deep sea exploration, the development of deep water structures is urgent, so research on the mechanical properties of deep water structures is important, and DIC test systems are considered as feasible and preferable for future research on the mechanical properties of deep water structures due to high accuracy and high definition of images in strain measurement. However, the application scenario of the existing mature DIC test system is mainly concentrated in shallow water areas and air areas, and the existing mature DIC test system is not matched with a protection device capable of resisting the high-pressure environment in deep water areas, and the DIC test system is damaged due to huge pressure in the deep water areas, so that an underwater protection device capable of providing the deep-sea area safe working environment for the DIC system is required to be designed, and a set of deep-water DIC test system is formed.
The DIC camera is required to be placed in an underwater environment for DIC measurement in a deep sea environment, and the DIC camera is insufficient in pressure resistance and waterproof capacity to resist damage of an extreme environment only by means of the DIC camera, so that the invention aims to build an environment meeting normal operation of the DIC camera. In particular, the current general underwater protection device is basically only applicable to the working environment of shallow water, and the protection is mainly to keep the tightness of the device in the environment with lower pressure (slightly higher than atmospheric pressure), so that the general watertight mode is thread sealing. However, the general protection device does not consider the challenge of the high-pressure environment in the deep water area on the protection tightness of the DIC camera, namely, the thread sealing method cannot realize the complete watertight of the protection device in the ultra-high-pressure deep water environment, which can lead to the damage of the DIC camera.
Disclosure of Invention
The invention aims to solve the technical problem of providing a flexible watertight-based deepwater DIC test system which is reasonable in structure, can bear 15MPa of underwater high pressure (1500 m deep sea area) and keeps the structure watertight, and simultaneously meets the calibration flow of the DIC system.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a deep water DIC test system based on flexible watertight, includes pressure-resistant casing, observation device, signal transmission device, watertight device, camera clamping device, casing fixing device, T type frame, DIC camera and control cabinet, T type frame upper portion is fixed to be set up casing fixing device, casing fixing device upper portion sets up pressure-resistant casing, pressure-resistant casing inside sets up camera clamping device, camera clamping device fixed centre gripping DIC camera, pressure-resistant casing front end sets up observation device, pressure-resistant casing rear end sets up signal transmission device and watertight device, the DIC camera passes through the data line and is connected with the control cabinet.
According to the scheme, the front end of the pressure-resistant shell is opened, the rear end of the pressure-resistant shell is closed, and the center of the rear end of the pressure-resistant shell is provided with a first round hole for passing through the signal transmission device.
According to the scheme, the observation device comprises a front cover plate, observation glass and a copper gasket, wherein a circular groove is formed in the inner side of the front cover plate, the observation glass is arranged in the circular groove, the copper gasket is arranged between the front cover plate and the observation glass, threaded holes are uniformly formed in the end faces of the front cover plate and the pressure housing, and the observation device is connected with the pressure housing through bolts.
According to the scheme, the observation glass is transparent glass for realizing the observation function of the DIC camera, and the observation glass material is quartz glass.
According to the scheme, the copper gasket is red copper.
According to the scheme, the signal transmission device is of a steel thin-wall circular tube structure, and the outer surface of the signal transmission device is fixedly attached to the inner diameter of the first circular hole at the rear end of the pressure-resistant shell; the signal transmission device is flush with the pressure-resistant shell, and is communicated with the outside inside the pressure-resistant shell, so that the signal transmission device is used for passing a data transmission line, and information interaction between the DIC camera and the console is realized.
According to the scheme, the watertight device comprises a first spring, a metal cushion block, a rubber layer and a fixed ring, the watertight device is arranged on the inner side of the signal transmission device, the fixed ring is fixedly arranged at the rear end of the pressure-resistant shell, four first springs are uniformly distributed in the fixed ring, one end of each first spring is fixedly connected with the other section of the fixed ring and is fixedly connected with the metal cushion block, the first springs are four and uniformly distributed on the inner surface of the fixed ring, the inner side of each metal cushion block is provided with an annular rubber layer, a second round hole with the diameter smaller than the inner diameter of the signal transmission device is formed in the middle of the rubber layer, and the second round hole and the signal transmission device are concentric circles
According to the proposal, the camera clamping device comprises a second spring, a spring sliding rail and a clamping frame, wherein the clamping frame comprises a clamping head arranged at the front end, longitudinal arms at two sides and a cross arm at the bottom end, the clamping frame is a C-shaped clamp, the clamping head is fixedly arranged on the inner surface of the pressure-resistant shell, the spring sliding rail is arranged in the longitudinal arms,
two spring sliding rails are symmetrically arranged in the cross arm, and a second spring is placed in the spring sliding rails.
According to the scheme, the shell fixing device comprises a connecting rod, a rolling bearing and a bracket; the connecting rod is annular thin wall structure, the support passes through the connecting rod and is connected with pressure housing, the fixed lower surface that sets up at pressure housing of connecting rod upper end, the connecting rod lower extreme passes through antifriction bearing and realizes the adaptation with the support, the bolt hole has evenly been seted up to the connecting rod, support upper end welding has the second fixing bolt, second fixing bolt is located same height with the connecting rod bolt hole.
According to the scheme, the bottom of the T-shaped frame is fixedly arranged on a test field, the upper end cross rod of the T-shaped frame is fixedly connected with the support, and the diameter of the upper end cross rod of the T-shaped frame is smaller than the inner diameter of the support.
The flexible watertight-based deepwater DIC test system has the following beneficial effects:
1. the invention has reasonable structure and capability of carrying out strain test in a deep sea 1500m environment;
2. the design of the camera protection device provides pressure resistance and water resistance for the underwater working environment of the DIC system;
3. aiming at the problem of screw thread watertight failure in a deep sea environment, the invention provides a flexible watertight structure, and the use of a flexible watertight device increases the watertight guarantee of the structure in a 1500m water depth environment;
4. the use of the housing fixing device of the present invention fulfills the need for multiple degrees of freedom rotation of the DIC testing system in the calibration procedure.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic perspective view of a flexible watertight-based deep water DIC test system in accordance with the present invention;
FIG. 2 is a schematic diagram of the overall side view of the present invention;
FIG. 3 is a schematic diagram of the front view of the camera guard of the present invention;
FIG. 4 is a schematic view of a semi-sectional structure of the observation device of the present invention;
FIG. 5 is a schematic side view of the signal transmission device of the present invention;
FIG. 6 is a schematic diagram of the front view of the watertight device of the present invention;
FIG. 7 is a schematic diagram of the front view of the camera clamping device of the present invention;
FIG. 8 is a schematic rear view of the housing securing apparatus of the present invention;
in the figure: 1. the pressure-proof shell comprises a pressure-proof shell body, 2, an observation device, 3, a signal transmission device, 4, a watertight device, 5, a camera clamping device, 6, a shell body fixing device, 7, a T-shaped frame, 8, a DIC camera, 9, a control console, 22, a front cover plate, 23, observation glass, 24, a copper gasket, 31, a data transmission line, 41, a high-strength spring, 42, a metal cushion block, 43, a rubber layer, 44, a fixing ring, 51, a clamping head, 52, a spring, 53, a spring sliding rail, 54, a clamping frame, 55, a longitudinal arm, 56, a cross arm, 61, a connecting rod, 62, a first fixing bolt, 63, a bolt hole, 64, a rolling bearing, 65, a bracket, 66 and a second fixing bolt.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 to 7, the flexible watertight-based deepwater DIC testing system according to the present invention comprises a pressure-resistant housing 1, an observation device 2, a signal transmission device 3, a watertight device 4, a camera clamping device 5, a housing fixing device 6, a T-shaped frame 7, a DIC camera 8 and a console 9. The upper portion of the T-shaped frame 7 is fixedly provided with a shell fixing device 6, the upper portion of the shell fixing device 6 is provided with a pressure-resistant shell 1, a camera clamping device 5 is arranged inside the pressure-resistant shell 1, a DIC camera 8 is fixedly clamped by the camera clamping device 5, the front end of the pressure-resistant shell 1 is provided with an observation device 2, the rear end of the pressure-resistant shell 1 is provided with a signal transmission device 3 and a watertight device 4, and the DIC camera 8 is connected with a control console 9 through a data line. The front end of the pressure-resistant shell 1 is fixed with the observation device 2 through bolts, and the front part of the pressure-resistant shell 1 is increased in circumferential wall thickness. The front end of the pressure housing 1 is opened, the rear end of the pressure housing 1 is closed, and a first round hole for passing through the signal transmission device 3 is formed in the center of the rear end.
The viewing device 2 comprises a front cover plate 22, a viewing glass 23 and a copper washer 24. The front cover plate 22 and the copper gasket 24 are annular, and the observation glass 23 is disk-shaped. The inside circular recess of having seted up of front shroud 22, the diameter of circular recess equals the external diameter of observation glass 23 and copper washer 24, and observation glass 23 sets up in circular recess, sets up copper washer 24 between front shroud 22 and the observation glass 23, and front shroud 22 and pressure housing 1 terminal surface evenly set up the screw hole, and observation device 2 and pressure housing 1 bolted connection are fixed. The front panel of the sight glass 23 is attached to the copper washer 24, both of which are just embedded in the circular recess of the front cover plate 22. Screw holes are uniformly distributed at corresponding positions of the front cover plate 22 and the end face of the pressure housing 1, and the connection of the observation device 2 and the pressure housing 1 is realized through bolts. The observation glass 23 must be transparent in color to realize the observation function of the DIC camera 8, and the observation glass 23 is made of quartz glass with good compressive strength, so that the requirement of the compressive capacity in a high-pressure environment can be satisfied. Copper gasket 24 is made of red copper, has good ductility, can be extruded and deformed without being damaged under the action of huge vertical ballasting, and can ensure good water tightness between observation glass 23 and front cover plate 22.
The signal transmission device 3 is of a steel thin-wall circular tube structure, and the outer surface of the signal transmission device 3 is attached and fixed with the inner diameter of the first circular hole at the rear end of the pressure-resistant shell 1. The inner side of the signal transmission device 3 is flush with the inner side of the pressure-resistant shell 1, and the communication between the inner side and the outer side of the pressure-resistant shell 1 is realized, so that the signal transmission device is further used for the passing of a data transmission 31 line, and the information interaction between the DIC camera 8 and the console 9 is realized.
The watertight device 4 comprises a first spring 41, a metal cushion block 42, a rubber layer 43 and a fixing ring 44, the watertight device 4 is arranged on the inner side of the signal transmission device 3, and the end part of the watertight device 4 is tightly attached to the inner surface of the pressure-resistant shell 1. The fixed ring 44 welded fastening sets up in pressure housing 1 rear end, evenly distributed four first springs 41 in the fixed ring 44, first spring 41 one end fixed connection fixed ring 44, the other section fixed connection metal cushion 42 of first spring 41, first spring 41 sets up four and evenly distributed in fixed ring 44 internal surface, the metal cushion 42 inboard sets up annular rubber layer 43, set up the second round hole that the diameter is less than signal transmission device 3 internal diameter in the middle of the rubber layer 43, the second round hole is concentric circles with signal transmission device 3. When the data transmission 31 line is communicated with the inside and the outside of the protection device through the signal transmission device 3 and the watertight device 4, the watertight device 4 starts to operate. The diameter of the data transmission 31 is larger than the reserved diameter of the watertight device 4, so that the high-strength spring is in a compression deformation state, and larger pressure is generated, so that the rubber layer 43 is tightly attached to the outer diameter of the data transmission 31. The rubber layer 43 has good deformation performance, and when the rubber layer is subjected to spring pressure, the rubber layer is greatly deformed, so that the hole of the signal transmission device 3 is completely blocked, and a good watertight environment is formed.
The camera clamping device 5 comprises a second spring 52, a spring slide rail 53 and a clamping frame 54 for clamping and fixing the DIC camera 8. The clamping frame 54 comprises a clamping head 51 arranged at the front end, longitudinal arms 55 on two sides and a cross arm 56 at the bottom end, the clamping frame 54 is a C-shaped clamp, the clamping head 51 is welded at the front end of the longitudinal arms 55, the clamping head 51 is fixedly welded on the inner surface of the pressure-resistant shell 1, a spring sliding rail 53 is arranged in the longitudinal arms 55, two spring sliding rails 53 are symmetrically arranged in the cross arm 56, a second spring 52 is placed in the spring sliding rail 53, and the spring sliding rail 53 is telescopic. The clamping frame 54 is fixedly connected with the two outer sides of the spring sliding rail 53 in the cross arm 56 at the bottom through longitudinal arms 55 at the two sides of the clamping frame 54, and the clamping head 51 is fixed with the upper end parts of the spring sliding rail 53 of the longitudinal arms 55 at the two sides. The lower end parts of the side arm springs are kept fixed, the inner sides of the bottom cross arm 56 springs are kept fixed, and the vertical clamping range and the longitudinal clamping range of the clamping device can be respectively changed by vertically pulling the clamping head 51 and longitudinally pulling the two side arms of the clamping frame 54, so that the function of clamping DIC cameras 8 with different sizes is realized.
The housing fixture 6 includes a connecting rod 61, a rolling bearing 64, and a bracket 65. The connecting rod 61 is annular thin wall structure, and support 65 passes through connecting rod 61 to be connected with pressure housing 1, and connecting rod 61 upper end welded fastening sets up the lower surface at pressure housing 1, and connecting rod 61 lower tip passes through antifriction bearing 64 and realizes the adaptation with support 65, and connecting rod 61 has evenly seted up bolt hole 63 according to certain angle, and support 65 upper end welding has second fixing bolt 66, and second fixing bolt 66 is located same height with bolt hole 63 of connecting rod 61. The connecting rod 61 can realize the angle change between the connecting rod and the bracket 65 through the rolling bearing 64, so as to change the shooting angle of the DIC camera 8, and complete the calibration of the DIC system. After the connection rod 61 completes the selection of the photographing angle, the connection rod 61 may be fixed by screwing the fixing bolt.
The bottom of T type frame 7 is fixed to be set up on the test site, and the upper end horizontal pole and the support 65 fixed connection of T type frame 7, and the upper end horizontal pole diameter of T type frame 7 is less than the internal diameter of support 65, realizes the fixed of support 65 and T type frame 7 through screwing first fixing bolt 62. The DIC camera 8 is located inside the pressure housing 1 and is held and fixed by the camera holding means 5. The tail of the DIC camera 8 is provided with a data transmission 31 line, and the data transmission 31 line is connected with an external console 9 through the watertight device 4 and the signal transmission device 3 in sequence to perform data interaction. The console 9 is located in an atmospheric dry environment and is connected to the DIC camera 8 via a data transmission 31 for receiving and processing structural strain data.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The utility model provides a deep water DIC test system based on flexible watertight, its characterized in that includes pressure-resistant casing, observation device, signal transmission device, watertight device, camera clamping device, casing fixing device, T type frame, DIC camera and control cabinet, T type frame upper portion is fixed to be set up casing fixing device, casing fixing device upper portion sets up pressure-resistant casing, pressure-resistant casing inside sets up camera clamping device, camera clamping device fixed centre gripping DIC camera, pressure-resistant casing front end sets up observation device, pressure-resistant casing rear end sets up signal transmission device and watertight device, the DIC camera passes through the data line and is connected with the control cabinet.
2. The flexible watertight-based deep water DIC testing system of claim 1, wherein the pressure housing is open at a front end, the pressure housing is closed at a rear end and a first circular hole for passing a signal transmission device is formed at a center of the rear end.
3. The flexible watertight-based deep water DIC testing system of claim 1, wherein the observation device comprises a front cover plate, observation glass and a copper gasket, the inner side of the front cover plate is provided with a circular groove, the observation glass is arranged in the circular groove, the copper gasket is arranged between the front cover plate and the observation glass, threaded holes are uniformly formed in the end faces of the front cover plate and the pressure-resistant shell, and the observation device is connected with the pressure-resistant shell through bolts.
4. The flexible watertight-based deep water DIC testing system of claim 3, wherein the observation glass is transparent glass for realizing an observation function of a DIC camera, and the observation glass material is quartz glass.
5. The flexible watertight-based deep water DIC testing system of claim 3 wherein the copper gasket is red copper.
6. The flexible watertight-based deep water DIC testing system of claim 2, wherein the signal transmission device is of a steel thin-walled circular tube structure, and the outer surface of the signal transmission device is fixedly attached to the inner diameter of the first circular hole at the rear end of the pressure-resistant shell; the signal transmission device is flush with the pressure-resistant shell, and is communicated with the outside inside the pressure-resistant shell, so that the signal transmission device is used for passing a data transmission line, and information interaction between the DIC camera and the console is realized.
7. The flexible watertight-based deep water DIC testing system according to claim 1, wherein the watertight device comprises a first spring, a metal cushion block, a rubber layer and a fixing ring, the watertight device is arranged on the inner side of the signal transmission device, the fixing ring is fixedly arranged on the rear end of the pressure-resistant shell, four first springs are uniformly distributed in the fixing ring, one end of each first spring is fixedly connected with the other section of the fixing ring and is fixedly connected with the metal cushion block, the first springs are four and uniformly distributed on the inner surface of the fixing ring, the inner side of each metal cushion block is provided with an annular rubber layer, a second round hole with the diameter smaller than the inner diameter of the signal transmission device is formed in the middle of the rubber layer, and the second round hole and the signal transmission device are concentric circles.
8. The flexible watertight-based deep water DIC testing system of claim 1, wherein the camera clamping device comprises a second spring, a spring sliding rail and a clamping frame, the clamping frame comprises a clamping head arranged at the front end, longitudinal arms on two sides and a cross arm arranged at the bottom end, the clamping frame is a C-shaped clamp, the clamping head is fixedly arranged on the inner surface of the pressure-resistant shell, the spring sliding rail is arranged in the longitudinal arms, two spring sliding rails are symmetrically arranged in the cross arm, and the second spring is placed in the spring sliding rail.
9. The flexible watertight-based deep water DIC testing system of claim 1, wherein the housing fixtures comprise a connecting rod, a rolling bearing and a bracket; the connecting rod is annular thin wall structure, the support passes through the connecting rod and is connected with pressure housing, the fixed lower surface that sets up at pressure housing of connecting rod upper end, the connecting rod lower extreme passes through antifriction bearing and realizes the adaptation with the support, the bolt hole has evenly been seted up to the connecting rod, support upper end welding has the second fixing bolt, second fixing bolt is located same height with the connecting rod bolt hole.
10. The flexible watertight-based deep water DIC testing system of claim 1, wherein the bottom of the T-shaped rack is fixedly disposed on the testing site, the upper end rail of the T-shaped rack is fixedly connected with the bracket, and the diameter of the upper end rail of the T-shaped rack is smaller than the inner diameter of the bracket.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310116031.2A CN116202440B (en) | 2023-02-08 | 2023-02-08 | Deep water DIC test system based on flexible watertight |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310116031.2A CN116202440B (en) | 2023-02-08 | 2023-02-08 | Deep water DIC test system based on flexible watertight |
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| CN116202440A true CN116202440A (en) | 2023-06-02 |
| CN116202440B CN116202440B (en) | 2023-11-14 |
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