Stress corrosion test device for grid structure

Abstract

The invention discloses a grid structure stress corrosion test device which comprises a bottom frame, and an experiment frame is mounted on the top surface of the bottom frame; the loading mechanisms are arranged on the experiment frame at equal intervals, each loading mechanism comprises a horizontal loading assembly and a torsion loading assembly, a mounting plate is mounted on the bottom frame, a distance adjusting assembly is mounted on the mounting plate, and the torsion loading assemblies are mounted on the distance adjusting assembly; the spraying mechanism comprises a spraying shell and a liquid circulation assembly, a spraying head is installed at the top in the spraying shell and communicates with the output end of the liquid circulation assembly, and a liquid discharging pipe is installed at the bottom of the spraying shell; the visual monitoring system is installed on the torsion loading assembly, the visual monitoring system and the experiment rod piece are correspondingly arranged, and the visual monitoring system is electrically connected with the control system. According to the invention, the horizontal loading assembly and the torsion loading assembly are matched to apply a torsion force and a force in the horizontal direction to the rod piece, so that the comprehensiveness of detection is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of material stress corrosion test equipment, in particular to a grid structure stress corrosion test device. Background Art

[0002] Rod components play an important role in various mechanical systems, and their stress corrosion and stability are directly related to the operating efficiency and service life of the entire mechanical system. For example, in the automotive industry, shift levers and thrust rods are key components in the automotive transmission and suspension systems, and their stress corrosion directly affects the safety of the vehicle; in the mine support system, anchor rods are the core of the support structure, and their stress corrosion is directly related to the stability of the tunnel surrounding rock. Therefore, it is particularly important to develop a test device that can comprehensively evaluate the stress corrosion of rod components.

[0003] Traditional stress corrosion testing methods often use simple loading and static testing, which cannot accurately simulate the complex load and stress conditions of rod components in actual working environments. Based on this, the present invention provides a grid structure stress corrosion testing device. Summary of the invention

[0004] The purpose of the present invention is to provide a grid structure stress corrosion test device to solve the problems existing in the prior art.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a stress corrosion test device for a grid structure, comprising:

[0006] A bottom frame, a top surface of which is provided with an experimental frame;

[0007] A loading mechanism, wherein a plurality of groups of loading mechanisms are arranged at equal intervals on the experimental frame, the loading mechanism comprises a horizontal loading component and a torsion loading component, the horizontal loading component is mounted on one side of the experimental frame, a mounting plate is mounted on the base frame, a distance adjustment component is mounted on the mounting plate, the torsion loading component is mounted on the distance adjustment component, and two ends of the experimental rod are respectively fixed to the horizontal loading component and the torsion loading component;

[0008] A spray mechanism, the spray mechanism comprising a spray shell and a liquid circulation component, the spray shell is mounted on the experimental rod, a spray head is mounted on the top of the spray shell, the spray head is connected to the output end of the liquid circulation component, a drain pipe is mounted on the bottom of the spray shell, the drain pipe is connected to the output end of the liquid circulation component;

[0009] A visual monitoring system is installed on the torsion loading assembly, and the visual monitoring system is arranged corresponding to the experimental rod, and the visual monitoring system is electrically connected to the control system.

[0010] According to the grid structure stress corrosion testing device provided by the present invention, the horizontal loading assembly includes two force frames respectively arranged inside and outside the experimental frame, a plurality of pull rods are arranged between the two force frames, the pull rods and the two ends of the pull rods are respectively threadedly connected with fixing nuts, the fixing nuts abut against the sides of the two force frames away from each other, a support spring is fixedly connected between the force frame located inside the experimental frame and the experimental frame, the support spring is sleeved on the pull rod, a hydraulic cylinder is fixedly connected to the outside of the experimental frame, the hydraulic cylinder abuts against the force frame located outside the experimental frame, and the axis of the hydraulic cylinder is colinear with the axis of the experimental rod; a positioning fixture is installed on the force frame located inside the experimental frame, and one end of the experimental rod is fixed to the force frame by the positioning fixture.

[0011] According to the grid structure stress corrosion testing device provided by the present invention, the torsion loading assembly includes a torsion motor and a transmission, the torsion motor and the transmission are both installed on the distance adjustment assembly, the output shaft of the torsion motor is fixedly connected to the input shaft of the transmission, the output shaft of the transmission is installed with the positioning fixture, and the other end of the experimental rod is fixed to the output shaft of the transmission through the positioning fixture.

[0012] According to the grid structure stress corrosion testing device provided by the present invention, the positioning fixture includes a fixed plate, a through hole is opened at the center position of the fixed plate, a plurality of slide grooves are opened at axial intervals on one side of the fixed plate, the axis of the slide groove coincides with the radius line of the fixed plate, an installation cavity is opened in the fixed plate, the installation cavity is communicated with the slide groove, an adjusting plate is rotatably connected in the installation cavity, a vortex thread groove is opened on the adjusting plate, a positioning block is slidably connected in the slide groove, a spiral groove is opened on the bottom surface of the positioning block, the positioning block and the adjusting plate are transmission-matched through the vortex thread groove and the spiral groove, a tooth groove is circumferentially opened on the other side of the adjusting plate, a mounting hole is opened on the side wall of the mounting cavity, a bevel gear is rotatably connected in the mounting hole, the bevel gear is meshed with the tooth groove, the end of the experimental rod is inserted in the through hole, and the positioning block abuts against the outer wall of the experimental rod.

[0013] According to the grid structure stress corrosion testing device provided by the present invention, the distance adjustment component includes a slide, the top surface of the mounting plate is installed with a horizontal through groove, the bottom surface of the slide is fixedly connected with a slider, the slider is slidably connected in the horizontal through groove, the torque motor and the transmission are both installed on the top surface of the slide, the top surface of the mounting plate is fixedly connected with an electric push rod, the output end of the electric push rod is vertically fixedly connected with a connecting plate, two groups of fixed rods are vertically fixedly connected on the connecting plate, and the fixed rods are fixedly connected to the end surface of the slide.

[0014] According to the grid structure stress corrosion testing device provided by the present invention, the spray shell includes two symmetrically arranged transparent shells, the transparent shells are respectively provided with semicircular grooves, and the semicircular grooves on the two transparent shells are arranged correspondingly, the two transparent shells are fixedly connected by a fixing member, and the experimental rod passes through the transparent shells through the semicircular grooves.

[0015] According to the grid structure stress corrosion testing device provided by the present invention, the liquid circulation component includes a liquid storage tank and a filter, the filter input end is fixedly connected to a return pipe, a waste liquid tank is installed on the top surface of the mounting plate, the waste liquid tank and the return pipe are fixedly connected, a drain port is opened at the bottom of the transparent shell, the drain pipe is installed on the drain port, the filter output end is connected to the liquid storage tank, the liquid storage tank output end is fixedly connected to a delivery pipe, a plurality of shunt pipes are fixedly connected to the delivery pipe, and the shunt pipes are respectively connected to a plurality of the nozzles.

[0016] According to the grid structure stress corrosion testing device provided by the present invention, the visual monitoring system includes a plurality of panoramic cameras, which are respectively mounted on the torque motor and the fixed plate, and the panoramic cameras are arranged corresponding to the experimental rods.

[0017] According to the grid structure stress corrosion testing device provided by the present invention, a plurality of positioning support assemblies are installed on the mounting plate, and the positioning support assembly includes a mounting seat fixedly connected to the top surface of the mounting plate, and the top surface of the mounting seat is symmetrically connected to two positioning claws via a rotating shaft, a torsion spring is installed on the rotating shaft, a linear motor is vertically installed on the side of the mounting seat, and a lifting plate is installed on the linear motor.

[0018] The present invention discloses the following technical effects:

[0019] When the present invention is working, the position of the torsion loading assembly is adjusted according to the length of the experimental rod, and then the two ends of the experimental rod are respectively fixed on the torsion loading assembly and the horizontal loading assembly, the spray shell is installed on the experimental rod, and the spray head is connected to the liquid circulation assembly. The corrosive solution is sprayed on the experimental rod through the liquid circulation assembly, and the torsion loading assembly and / or the horizontal loading assembly are controlled to work, and corresponding stress is applied to the experimental rod, and the stress corrosion state of the rod is detected and recorded through a visual monitoring system.

[0020] The present invention adopts the cooperation of the horizontal loading component and the torsion loading component to apply torsional force and horizontal force to the rod, thereby ensuring the comprehensiveness of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the grid structure stress corrosion test device of the present invention;

[0023] Figure 2 It is a front view of the matching relationship between the transparent shell and the experimental rod of the present invention;

[0024] Figure 3 It is a cross-sectional view of the matching relationship between the transparent shell and the experimental rod of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the loading mechanism of the present invention;

[0026] Figure 5 It is a schematic structural diagram of the positioning fixture of the present invention.

[0027] Among them, 1. Experimental frame; 2. Mounting plate; 3. Force frame; 4. Pull rod; 5. Fixing nut; 6. Support spring; 7. Hydraulic cylinder; 8. Torque motor; 9. Transmission; 10. Fixed plate; 11. Slide; 12. Adjusting plate; 13. Positioning block; 14. Vortex thread groove; 15. Bevel gear; 16. Slide; 17. Electric push rod; 18. Connecting plate; 19. Fixed rod; 20. Transparent shell; 21. Semicircular groove; 22. Drain port; 23. Waste liquid tank; 24. Delivery pipe; 25. Diverter pipe; 26. Panoramic camera; 27. Mounting seat; 28. Positioning claw; 29. ​​Linear motor; 30. Lifting plate. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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 creative work are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-Figure 5 The present invention provides a grid structure stress corrosion test device, comprising:

[0031] A bottom frame, wherein an experimental frame 1 is mounted on the top surface of the bottom frame;

[0032] A loading mechanism, wherein a plurality of groups of loading mechanisms are arranged at equal intervals on the experimental frame 1, and the loading mechanism comprises a horizontal loading component and a torsion loading component. The horizontal loading component is installed on one side of the experimental frame 1, a mounting plate 2 is installed on the bottom frame, a distance adjustment component is installed on the mounting plate 2, and the torsion loading component is installed on the distance adjustment component. Both ends of the experimental rod are fixed to the horizontal loading component and the torsion loading component respectively;

[0033] The spray mechanism includes a spray shell and a liquid circulation component. The spray shell is installed on the experimental rod. A spray head is installed on the top of the spray shell. The spray head is connected to the output end of the liquid circulation component. A drain pipe is installed on the bottom of the spray shell. The drain pipe is connected to the output end of the liquid circulation component.

[0034] The visual monitoring system is installed on the torsion loading assembly, and the visual monitoring system is set corresponding to the experimental rod, and the visual monitoring system is electrically connected to the control system.

[0035] When the present invention is working, the position of the torsion loading assembly is adjusted according to the length of the experimental rod, and then the two ends of the experimental rod are respectively fixed on the torsion loading assembly and the horizontal loading assembly, the spray shell is installed on the experimental rod, and the spray head is connected to the liquid circulation assembly. The corrosive solution is sprayed on the experimental rod through the liquid circulation assembly, and the torsion loading assembly and / or the horizontal loading assembly are controlled to work, and corresponding stress is applied to the experimental rod, and the stress corrosion state of the rod is detected and recorded through a visual monitoring system.

[0036] The present invention adopts the cooperation of the horizontal loading component and the torsion loading component to apply torsional force and horizontal force to the rod, thereby ensuring the comprehensiveness of the detection.

[0037] Further optimization scheme, the horizontal loading assembly includes two force frames 3 respectively arranged inside and outside the experimental frame 1, a plurality of pull rods 4 are arranged between the two force frames 3, and the pull rods 4 and the two ends of the pull rods 4 are respectively threadedly connected with fixing nuts 5, and the fixing nuts 5 are in contact with the side of the two force frames 3 away from each other, and the force frame 3 located inside the experimental frame 1 is fixedly connected with the experimental frame 1 and the supporting spring 6 is sleeved on the pull rod 4, and the outer side of the experimental frame 1 is fixedly connected with a hydraulic cylinder 7, and the hydraulic cylinder 7 is in contact with the force frame 3 located outside the experimental frame 1, and the axis of the hydraulic cylinder 7 is in line with the axis of the experimental rod; the force frame 3 located inside the experimental frame 1 is installed with a positioning fixture, and one end of the experimental rod is fixed to the force frame 3 through the positioning fixture. A straight line tension or pressure is applied by the hydraulic cylinder 7 to apply axial load to the rod.

[0038] Further optimization scheme, the torque loading assembly includes a torque motor 8 and a transmission 9, both of which are installed on the distance adjustment assembly, the output shaft of the torque motor 8 is fixedly connected to the input shaft of the transmission 9, the output shaft of the transmission 9 is installed with a positioning fixture, and the other end of the experimental rod is fixed to the output shaft of the transmission 9 through the positioning fixture. The torque motor 8 outputs torque to apply a torsional force to the experimental rod, and the hydraulic cylinder 7 applies axial loading to the rod. The rod is tested through a variety of stress loading methods, expanding the detection range and detection flexibility.

[0039] A further optimization scheme is provided, the positioning fixture includes a fixed disk 10, a through hole is provided at the center position of the fixed disk 10, a plurality of slide grooves 11 are provided at axial intervals on one side of the fixed disk 10, the axis of the slide groove 11 coincides with the radius line of the fixed disk 10, an installation cavity is provided in the fixed disk 10, the installation cavity is connected with the slide groove 11, an adjusting disk 12 is rotatably connected in the installation cavity, a vortex thread groove 14 is provided on the adjusting disk 12, a positioning block 13 is slidably connected in the slide groove 11, a spiral groove is provided on the bottom surface of the positioning block 13, the positioning block 13 and the adjusting disk 12 are matched through the vortex thread groove 14 and the spiral groove, a tooth groove is circumferentially provided on the other side of the adjusting disk 12, a mounting hole is provided on the side wall of the mounting cavity, a bevel gear 15 is rotatably connected in the mounting hole, the bevel gear 15 is meshed with the tooth groove, the end of the experimental rod is inserted in the through hole, and the positioning block 13 is abutted against the outer wall of the experimental rod. The bevel gear 15 drives the adjusting disk 12 to rotate, and the adjusting disk 12 controls the positioning block 13 to slide along the diameter line through the vortex spiral groove thereon, and the positioning block 13 is used to position the experimental rod, thereby achieving the positioning of the experimental rod.

[0040] Further optimization scheme, the distance adjustment component includes a slide 16, a horizontal through slot is installed on the top surface of the mounting plate 2, a slider is fixedly connected to the bottom surface of the slide 16, the slider is slidably connected in the horizontal through slot, the torque motor 8 and the transmission 9 are both installed on the top surface of the slide 16, the top surface of the mounting plate 2 is fixedly connected to an electric push rod 17, the output end of the electric push rod 17 is vertically fixedly connected to a connecting plate 18, two groups of fixed rods 19 are vertically fixedly connected to the connecting plate 18, and the fixed rods 19 are fixedly connected to the end surface of the slide 16. The position of the slide 16 can be adjusted by setting the distance adjustment component, so that the device can be suitable for experimental rods of different lengths.

[0041] In a further optimized solution, the spray shell includes two symmetrically arranged transparent shells 20, and the transparent shells 20 are respectively provided with semicircular grooves 21, and the semicircular grooves 21 on the two transparent shells 20 are arranged correspondingly, and the two transparent shells 20 are fixedly connected by a fixing member, and the experimental rod passes through the transparent shell 20 through the semicircular groove 21. The fixing member adopts a fixing buckle or other structure, which is not specifically limited in this embodiment, and the transparent shell 20 needs to be made of anti-corrosion material or covered with an anti-corrosion coating on the inner wall.

[0042] A further optimized solution is that the liquid circulation component includes a liquid storage tank and a filter, the input end of the filter is fixedly connected to a return pipe, a waste liquid tank 23 is installed on the top surface of the mounting plate 2, the waste liquid tank 23 and the return pipe are fixedly connected, a drain port 22 is opened at the bottom of the transparent shell 20, the drain pipe is installed on the drain port 22, the output end of the filter is connected to the liquid storage tank, the output end of the liquid storage tank is fixedly connected to a delivery pipe 24, a plurality of shunt pipes 25 are fixedly connected to the delivery pipe 24, and the shunt pipes 25 are respectively connected to a plurality of nozzles.

[0043] The corrosive solution enters the transparent housing 20 through the liquid storage tank, and the waste liquid is output into the waste liquid tank 23 through the drain port 22 at the bottom, and enters the filter through the reflux pipe for filtration. The filtered solution flows back into the liquid storage tank. At the same time, a pH value detection sensor needs to be set in the liquid storage tank to detect the internal pH value to ensure that the pH value of the output solution is always maintained within a specific range.

[0044] Further optimizing the scheme, the visual monitoring system includes a plurality of panoramic cameras 26, which are respectively mounted on the torque motor 8 and the fixing plate 10, and the panoramic cameras 26 are arranged corresponding to the experimental rods. The setting of the visual monitoring system is used to record the state of the rods and transmit the data to the terminal for subsequent data sorting.

[0045] A further optimized solution is that a plurality of positioning support components are installed on the mounting plate 2, and the positioning support components include a mounting seat 27 fixedly connected to the top surface of the mounting plate 2, and two positioning claws 28 are symmetrically connected to the top surface of the mounting seat 27 through a rotating shaft, a torsion spring is installed on the rotating shaft, and a linear motor 29 is vertically installed on the side of the mounting seat 27, and a lifting plate 30 is installed on the linear motor 29.

[0046] The setting of the mounting seat 27 and the positioning claw 28 can support the experimental rod when the experimental rod is installed, which is convenient for the installation of the experimental rod. The height of the experimental rod can be adjusted by the setting of the linear motor 29 and the lifting plate 30, so that the experimental rod remains in a horizontal state.

[0047] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A grid structure stress corrosion test device, characterized in that: include: A base frame, a top surface of which is mounted an experimental frame (1); A loading mechanism, wherein a plurality of groups of loading mechanisms are arranged at equal intervals on the experimental frame (1), the loading mechanism comprising a horizontal loading component and a torsion loading component, the horizontal loading component being mounted on one side of the experimental frame (1), a mounting plate (2) being mounted on the base frame, a distance adjustment component being mounted on the mounting plate (2), the torsion loading component being mounted on the distance adjustment component, and two ends of the experimental rod being respectively fixed to the horizontal loading component and the torsion loading component; A spray mechanism, the spray mechanism comprising a spray shell and a liquid circulation component, the spray shell is mounted on the experimental rod, a spray head is mounted on the top of the spray shell, the spray head is connected to the output end of the liquid circulation component, a drain pipe is mounted on the bottom of the spray shell, the drain pipe is connected to the output end of the liquid circulation component; A visual monitoring system is installed on the torsion loading assembly, and the visual monitoring system is arranged corresponding to the experimental rod, and the visual monitoring system is electrically connected to the control system.

2. A grid structure stress corrosion testing device according to claim 1, characterized in that: The horizontal loading assembly comprises two force frames (3) respectively arranged inside and outside the experimental frame (1), a plurality of pull rods (4) are arranged between the two force frames (3), and the pull rods (4) and the ends of the pull rods (4) are respectively threadedly connected with fixing nuts (5), and the fixing nuts (5) are abutted against the sides of the two force frames (3) that are away from each other. A supporting spring is fixedly connected between the force frame (3) located inside the experimental frame (1) and the experimental frame (1). Spring (6), the support spring (6) is sleeved on the pull rod (4), the outer side of the experimental frame (1) is fixedly connected to a hydraulic cylinder (7), the hydraulic cylinder (7) is in contact with the force frame (3) located outside the experimental frame (1), and the axis of the hydraulic cylinder (7) is colinear with the axis of the experimental rod; a positioning fixture is installed on the force frame (3) located on the inner side of the experimental frame (1), and one end of the experimental rod is fixed to the force frame (3) through the positioning fixture.

3. A grid structure stress corrosion testing device according to claim 2, characterized in that: The torque loading assembly comprises a torque motor (8) and a transmission (9), wherein the torque motor (8) and the transmission (9) are both mounted on the distance adjustment assembly, the output shaft of the torque motor (8) is fixedly connected to the input shaft of the transmission (9), the output shaft of the transmission (9) is mounted with the positioning fixture, and the other end of the experimental rod is fixed to the output shaft of the transmission (9) through the positioning fixture.

4. A grid structure stress corrosion testing device according to claim 3, characterized in that: The positioning fixture comprises a fixed disk (10), a through hole is provided at the center of the fixed disk (10), a plurality of slide grooves (11) are provided at axial intervals on one side of the fixed disk (10), the axis of the slide groove (11) coincides with the radius line of the fixed disk (10), a mounting cavity is provided in the fixed disk (10), the mounting cavity is communicated with the slide groove (11), an adjusting disk (12) is rotatably connected in the mounting cavity, a spiral thread groove (14) is provided on the adjusting disk (12), and a fixed disk (12) is slidably connected in the slide groove (11). A positioning block (13) is provided with a spiral groove on the bottom surface of the positioning block (13); the positioning block (13) and the adjusting disk (12) are matched with each other through the vortex thread groove (14) and the spiral groove; a tooth groove is circumferentially provided on the other side of the adjusting disk (12); a mounting hole is provided on the side wall of the mounting cavity; a bevel gear (15) is rotatably connected in the mounting hole; the bevel gear (15) is meshed with the tooth groove; the end of the experimental rod is inserted into the through hole, and the positioning block (13) is in contact with the outer wall of the experimental rod.

5. A grid structure stress corrosion testing device according to claim 3, characterized in that: The distance adjustment component comprises a slide (16), a horizontal through groove is installed on the top surface of the mounting plate (2), a slider is fixedly connected to the bottom surface of the slide (16), and the slider is slidably connected in the horizontal through groove, the torque motor (8) and the transmission (9) are both installed on the top surface of the slide (16), an electric push rod (17) is fixedly connected to the top surface of the mounting plate (2), the output end of the electric push rod (17) is vertically fixedly connected to a connecting plate (18), two groups of fixed rods (19) are vertically fixedly connected to the connecting plate (18), and the fixed rods (19) are fixedly connected to the end surface of the slide (16).

6. A grid structure stress corrosion testing device according to claim 1, characterized in that: The spray housing comprises two symmetrically arranged transparent shells (20), each of which is provided with a semicircular groove (21), and the semicircular grooves (21) on the two transparent shells (20) are arranged correspondingly, the two transparent shells (20) are fixedly connected by a fixing member, and the experimental rod passes through the transparent shell (20) through the semicircular groove (21).

7. A grid structure stress corrosion testing device according to claim 6, characterized in that: The liquid circulation component comprises a liquid storage tank and a filter, the input end of the filter is fixedly connected to a return pipe, a waste liquid tank (23) is installed on the top surface of the mounting plate (2), the waste liquid tank (23) and the return pipe are fixedly connected, a liquid discharge port (22) is opened at the bottom of the transparent shell (20), the liquid discharge pipe is installed on the liquid discharge port (22), the output end of the filter is connected to the liquid storage tank, the output end of the liquid storage tank is fixedly connected to a delivery pipe (24), a plurality of shunt pipes (25) are fixedly connected to the delivery pipe (24), and the shunt pipes (25) are respectively connected to a plurality of the nozzles.

8. A grid structure stress corrosion testing device according to claim 4, characterized in that: The visual monitoring system comprises a plurality of panoramic cameras (26), wherein the plurality of panoramic cameras (26) are respectively mounted on the torque motor (8) and the fixed plate (10), and the panoramic cameras (26) are arranged corresponding to the experimental rods.

9. A grid structure stress corrosion testing device according to claim 1, characterized in that: A plurality of positioning support components are installed on the mounting plate (2), and the positioning support components include a mounting seat (27) fixedly connected to the top surface of the mounting plate (2), and the top surface of the mounting seat (27) is symmetrically connected to two positioning claws (28) via a rotating shaft, and a torsion spring is installed on the rotating shaft. A linear motor (29) is vertically installed on the side of the mounting seat (27), and a lifting plate (30) is installed on the linear motor (29).

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