Corrosion resistance experiment equipment

Abstract

The invention relates to the technical field of corrosion resistance, and particularly discloses corrosion resistance experimental equipment, which comprises a testing machine main body, the testing machine main body comprises a driving motor, the driving motor is positioned outside the testing machine main body, one end of the driving motor is provided with a motor output shaft, and the motor output shaft is positioned inside the testing machine main body; the internal circulation mechanism is positioned in the testing machine main body and is used for uniformizing the salt mist density in the testing machine main body; the internal circulation mechanism is clamped through the clamping mechanism, the internal circulation mechanism can homogenize salt mist in the testing machine main body, and the internal circulation mechanism is located in the testing machine, so that the long-term stability of the concentration and temperature of the salt mist is ensured; test interruption or data deviation caused by environmental fluctuation is avoided, and the clamping mechanism is used for controlling clamping and releasing of the sliding wheels, so that the to-be-tested equipment is convenient to place and take.

Description

Technical Field

[0001] This invention relates to the field of corrosion resistance technology, specifically to a corrosion resistance testing device. Background Technology

[0002] In fields such as energy transmission, communications, infrastructure construction, and resource development, under specific circumstances, such as the transoceanic transport of natural gas and oil requiring the laying of pipelines in the sea, the valves installed between pipelines need to withstand seawater corrosion. Salt spray testing machines are key equipment that accelerates the evaluation of the corrosion resistance of materials and products by simulating marine or high-humidity corrosive environments. Their core significance lies in shortening the research and development cycle, reducing quality risks, and ensuring product reliability. They are widely used in industrial manufacturing, scientific research and testing, and standard certification, and combine conditions such as salt spray, drying, humidity, and light to more realistically simulate the actual use environment.

[0003] Existing salt spray testing machines require the test item to be placed inside the salt spray chamber, where the salt spray is sprayed out through nozzles. The machine's excellent sealing results in uneven salt spray corrosion during valve testing. This uneven salt spray-to-air ratio easily leads to deviations in the final measurement results, making the machine very inconvenient to use. Therefore, we propose a corrosion resistance testing device. Summary of the Invention

[0004] The purpose of this invention is to provide a corrosion resistance testing device to solve the problems mentioned in the background art, such as uneven salt spray corrosion in valve tests, uneven salt spray to air ratio, which easily leads to deviations in the final measurement results and is very inconvenient to use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a corrosion resistance testing device, comprising a testing machine body, wherein the testing machine body includes a drive motor located outside the testing machine body, and one end of the drive motor is provided with a motor output shaft located inside the testing machine body;

[0006] An internal circulation mechanism is located inside the main body of the testing machine. The internal circulation mechanism is used to uniformly distribute the salt spray density inside the main body of the testing machine. The internal circulation mechanism includes a drive wheel located at the end of the motor output shaft away from the drive motor. The drive wheel is fixedly connected to the motor output shaft and rotatably connected to the main body of the testing machine. A fixed rod is fixedly connected to the end of the drive wheel away from the drive motor. A sliding wheel is slidably connected to the end of the fixed rod away from the drive wheel. The fixed rod passes through the sliding wheel. A driven wheel is located at the end of the sliding wheel away from the fixed rod.

[0007] A locking mechanism is located between the sliding wheel and the driven wheel, and the locking mechanism is capable of locking the sliding wheel and the driven wheel together.

[0008] The fixed rod is fixedly connected to the driven wheel at the end away from the drive wheel, and a positioning rod is provided in the center of the driven wheel. The driven wheel is located around the positioning rod and is rotatably connected to the positioning rod.

[0009] The locking mechanism includes a locking groove opened at the end of the sliding wheel near the driven wheel. Two locking rods are fixedly connected to the inner wall of the locking groove. A locking plate is rotatably connected to the periphery of each locking rod. The end of the locking plate away from the locking rod is locked with the driven wheel.

[0010] The drive wheel has multiple telescopic cylinders near the sliding wheel, each telescopic cylinder is sequentially sleeved on top of the drive wheel, and the telescopic cylinder is slidably connected to the drive wheel. Multiple telescopic plates are fixedly connected to one side of the telescopic cylinder, each telescopic plate is sequentially sleeved on top of the drive wheel, and each telescopic plate is fixedly connected to the corresponding telescopic cylinder.

[0011] The telescopic cylinder near one end of the sliding wheel has a telescopic rod inside it. The telescopic rod is slidably connected to the telescopic cylinder, and one end of the telescopic rod is fixedly connected to the sliding wheel.

[0012] The drive wheel has a rotating groove at the end away from the telescopic plate. A rotating rod is slidably connected inside the rotating groove. The end of the rotating rod away from the rotating groove is located above the telescopic plate. An arc-shaped plate is fixedly connected to the outer wall of the telescopic plate. The rotating rod is located between the arc-shaped plate and the telescopic plate. A rotating ring is fixedly connected to the end of the rotating rod near the drive wheel. The rotating ring is rotatably connected to the drive wheel.

[0013] The locking mechanism includes a torsion spring fixedly connected to the outer wall of the locking rod. The end of the torsion spring away from the locking rod is fixedly connected to the locking plate. The two locking plates are symmetrically distributed. The driven wheel has an inclined surface at the end near the sliding wheel.

[0014] The inner wall of the snap-fit ​​groove is fixedly connected to a push rod, which is located between two snap-fit ​​rods. A spring is fixedly connected to the end of the push rod away from the inner wall of the snap-fit ​​groove, and a push cylinder is fixedly connected to the end of the spring away from the push rod. The push cylinder is located around the push rod and is slidably connected to the push rod. The end of the push cylinder away from the push rod abuts against the driven wheel.

[0015] The push cylinder is fixedly connected to a push ring, and the push ring is fixedly connected to two support rods. The two support rods are respectively close to the snap-fit ​​plates at both ends. The support rods are rotatably connected to a connecting plate, and the end of the connecting plate away from the support rod is rotatably connected to a limit block.

[0016] The limiting block has a limiting groove at its bottom, and a limiting rod is slidably connected inside the limiting groove. The lower end of the limiting rod is fixedly connected to the inner wall of the snap-fit ​​groove, and the end of the limiting block away from the connecting plate abuts against the snap-fit ​​plate.

[0017] The present invention has at least the following beneficial effects:

[0018] In use, the valve is placed inside the main body of the testing machine, and the internal circulation mechanism is engaged by a snap-fit ​​mechanism. The internal circulation mechanism can homogenize the salt spray inside the main body of the testing machine. The internal circulation mechanism is located inside the testing machine and forms an independent salt spray circulation system, reducing external interference and ensuring the long-term stability of salt spray concentration and temperature. This avoids test interruptions or data deviations caused by environmental fluctuations. The snap-fit ​​mechanism is used to control the snap-fit ​​and unsnap of the sliding wheel, making it convenient to place and remove the valve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the testing machine of the present invention;

[0020] Figure 2 This is a schematic diagram of the drive motor structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the main body of the testing machine of the present invention;

[0022] Figure 4 This is a schematic diagram of the local structure for removing local features according to the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram of area A in the middle;

[0024] Figure 6 This is a schematic diagram of the internal circulation structure of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged structural diagram of area B in the middle;

[0026] Figure 8 This is a schematic diagram of the overall structure of the clamping mechanism of the present invention;

[0027] Figure 9 For the present invention Figure 7 Enlarged structural diagram of area C;

[0028] Figure 10 This is a schematic diagram of the structure of the two garments of the present invention;

[0029] Figure 11 This is a schematic diagram of the overall structure of the limiting groove of the present invention.

[0030] In the diagram: 1. Main body of the testing machine; 11. Drive motor; 12. Motor output shaft; 2. Internal circulation mechanism; 21. Drive wheel; 22. Fixed rod; 23. Sliding wheel; 24. Driven wheel; 25. Positioning rod; 26. Telescopic cylinder; 27. Telescopic plate; 28. Telescopic rod; 29. ​​Rotating groove; 210. Rotating rod; 211. Arc plate; 212. Rotating ring; 3. Snap-fit ​​mechanism; 31. Snap-fit ​​groove; 32. Snap-fit ​​rod; 33. Snap-fit ​​plate; 34. Torsion spring; 35. Push rod; 36. Spring; 37. Push cylinder; 38. Push ring; 39. Support rod; 310. Connecting plate; 311. Limiting block; 312. Limiting groove; 313. Limiting rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-11 The present invention provides a technical solution: a corrosion resistance testing device, including a testing machine body 1, the testing machine body 1 including a drive motor 11, the drive motor 11 being located outside the testing machine body 1, and a motor output shaft 12 being provided at one end of the drive motor 11, the motor output shaft 12 being located inside the testing machine body 1;

[0033] An internal circulation mechanism 2 is located inside the main body 1 of the testing machine. The internal circulation mechanism 2 is used to uniformly distribute the salt spray density inside the main body 1 of the testing machine. The internal circulation mechanism 2 includes a drive wheel 21 disposed at the end of the motor output shaft 12 away from the drive motor 11. The drive wheel 21 is fixedly connected to the motor output shaft 12 and rotatably connected to the main body 1 of the testing machine. A fixed rod 22 is fixedly connected to the end of the drive wheel 21 away from the drive motor 11. A sliding wheel 23 is slidably connected to the end of the fixed rod 22 away from the drive wheel 21. The fixed rod 22 passes through the sliding wheel 23. A driven wheel 24 is disposed at the end of the sliding wheel 23 away from the fixed rod 22.

[0034] The locking mechanism 3 is located between the sliding wheel 23 and the driven wheel 24, and the locking mechanism 3 can lock the sliding wheel 23 and the driven wheel 24.

[0035] In use, the valve is placed inside the sliding wheel 23 (not shown in the figure). The internal circulation mechanism 2 is engaged by the locking mechanism 3. The internal circulation mechanism 2 can homogenize the salt spray inside the main body 1 of the testing machine. The internal circulation mechanism 2 is located inside the testing machine and forms an independent salt spray circulation system, reducing external interference and ensuring the long-term stability of salt spray concentration and temperature. This avoids test interruption or data deviation caused by environmental fluctuations. The locking mechanism 3 is used to control the locking and unlocking of the sliding wheel 23, making it convenient to place and remove the valve.

[0036] The fixed rod 22 is fixedly connected to the driven wheel 24 at the end away from the drive wheel 21. A positioning rod 25 is provided in the center of the driven wheel 24. The driven wheel 24 is located around the positioning rod 25 and is rotatably connected to the positioning rod 25.

[0037] During the salt spray corrosion test on the valve, the valve is placed inside the main body 1 of the testing machine. The sliding wheel 23 is pulled, causing it to slide around the fixed rod 22 until it reaches the driven side. The sliding wheel 23 is then engaged by the locking mechanism 3. At this point, the drive motor 11 is started, and the drive motor 11 drives the drive wheel 21 to rotate via the motor output shaft 12. The drive wheel 21 then drives the sliding wheel 23 to rotate via the fixed rod 22. The sliding wheel 23, through the locking mechanism 3, drives the driven wheel 24 to rotate around the positioning rod 25. As the drive wheel 21, fixed rod 22, and sliding wheel 23 rotate, the valve can extend... The shrink plate 27 drives the air inside the main body 1 of the testing machine to move, forming an air circulation inside the main body 1 of the testing machine. This fully mixes the salt spray inside the main body 1 with the air, allowing for continuous corrosion resistance testing of the valve. The main body 1 of the testing machine is a sealed structure, with the internal circulation mechanism 2 located entirely inside the main body 1, preventing salt spray leakage from corroding laboratory equipment or harming personnel health. It also prevents external air from entering and interfering with the testing environment. In addition, when the driven wheel 24 rotates around the positioning rod 25, it can cover different heights and corners inside the testing machine, avoiding the problem of excessively high or low local salt spray concentrations caused by traditional salt spraying methods.

[0038] The drive wheel 21 is provided with a plurality of telescopic cylinders 26 near the sliding wheel 23. Each telescopic cylinder 26 is sequentially sleeved and slidably connected to the drive wheel 21. A plurality of telescopic plates 27 are fixedly connected to one side of the telescopic cylinder 26. Each telescopic plate 27 is sequentially sleeved and fixedly connected to the corresponding telescopic cylinder 26.

[0039] Among them, a telescopic rod 28 is provided inside the telescopic cylinder 26 near one end of the sliding wheel 23. The telescopic rod 28 is slidably connected to the telescopic cylinder 26, and one end of the telescopic rod 28 is fixedly connected to the sliding wheel 23.

[0040] When the sliding wheel 23 is pulled, while sliding around the fixed rod 22, the sliding wheel 23 drives the telescopic cylinder 26 to slide through the telescopic rod 28. Since the telescopic cylinders 26 are sequentially nested and fixedly connected to the telescopic plate 27, the nested telescopic cylinders 26 and the telescopic plate 27 are pulled out one by one. The telescopic rod 28 drives the innermost telescopic cylinder 26 to slide. Through the fixed connection, the outer telescopic cylinders 26 are pulled out step by step, so that the overall unfolding radius of the telescopic plate 27 increases in a step-like manner. By controlling the pulling distance of the sliding wheel 23, the unfolding length of the telescopic cylinder 26 and the telescopic plate 27 can be flexibly adjusted to adapt to different specifications of testing machines.

[0041] A rotating groove 29 is formed at the end of the drive wheel 21 away from the telescopic plate 27. A rotating rod 210 is slidably connected inside the rotating groove 29. The end of the rotating rod 210 away from the rotating groove 29 is located above the telescopic plate 27. An arc-shaped plate 211 is fixedly connected to the outer wall of the telescopic plate 27. The rotating rod 210 is located between the arc-shaped plate 211 and the telescopic plate 27. A rotating ring 212 is fixedly connected to the end of the rotating rod 21 near the drive wheel 21. The rotating ring 212 is rotatably connected to the drive wheel 21.

[0042] After the sliding wheel 23 is engaged with the driven wheel 24 via the locking mechanism 3, the rotating ring 212 is rotated. The rotating ring 212 drives the rotating rod 210 to rotate inside the rotating groove 29. At the same time, the other end of the rotating rod 210 rotates between the arc plate 211 and the telescopic plate 27. The rotating rod 210 abuts against the arc plate 211 and pushes the arc plate 211. At this time, the arc plate 211 drives the telescopic plate 27 to rotate. The telescopic plate 27 tilts up to facilitate air circulation between the inside of the telescopic plate 27 and the inside of the testing machine body 1. When the driving wheel 21 drives the telescopic plate 27 to rotate, the test... The salt spray and air inside the main body 1 can enter the inner side of the telescopic plate 27 through the raised gap of the telescopic plate 27. Due to the different diameters, the telescopic plates 27 are asymmetrically distributed in the circumferential direction. When they are deployed, they can generate irregular air disturbances, break the salt spray stratification phenomenon, and form three-dimensional turbulence, so that the salt spray and air are fully mixed. In addition, the linkage between the telescopic cylinder 26 and the telescopic plate 27 relies entirely on mechanical sliding connection, without the need for electrical components such as sensors and solenoid valves, avoiding the risk of salt spray corrosion to electrical components and significantly improving the reliability of the valve in harsh environments.

[0043] The locking mechanism 3 includes a locking groove 31 opened at one end of the sliding wheel 23 near the driven wheel 24. Two locking rods 32 are fixedly connected to the inner wall of the locking groove 31. A locking plate 33 is rotatably connected to the periphery of each locking rod 32. The end of the locking plate 33 away from the locking rod 32 is locked with the driven wheel 24.

[0044] The snap-fit ​​mechanism 3 includes a torsion spring 34 fixedly connected to the outer wall of the snap-fit ​​rod 32. The end of the torsion spring 34 away from the snap-fit ​​rod 32 is fixedly connected to the snap-fit ​​plate 33. The two snap-fit ​​plates 33 are symmetrically distributed. The driven wheel 24 is inclined at the end near the sliding wheel 23.

[0045] When engaging the sliding wheel 23, the engaging plate 33 abuts against the inclined surface of the driven wheel 24 as the sliding wheel 23 approaches it, continuously pushing the sliding wheel 23. The engaging plate 33 then sweeps across the inclined surface of the driven wheel 24. At this time, the engaging plate 33 rotates around the engaging rod 32 until the engaging plate 33 engages with the driven wheel 24. Since a torsion spring 34 is provided between the engaging rod 32 and the engaging plate 33, the engaging plates 33 on both sides can engage the driven wheel 24, thereby driving the driven wheel 24 to rotate. They can also support the sliding wheel 23. The torsion spring 34 continuously provides elastic force after the engaging plate 33 is engaged, ensuring that the engaging plate 33 always adheres tightly to the driven wheel 24. Even if the testing machine vibrates or the load changes suddenly, the engaging plate 33 can be prevented from accidentally disengaging. The engaging action only requires pushing the sliding wheel 23, and the engaging mechanism 3 can quickly engage the sliding wheel 23, shortening the experimental preparation time.

[0046] A push rod 35 is fixedly connected to the inner wall of the snap-fit ​​groove 31. The push rod 35 is located between two snap-fit ​​rods 32. A spring 36 is fixedly connected to the end of the push rod 35 away from the inner wall of the snap-fit ​​groove 31. A push cylinder 37 is fixedly connected to the end of the spring 36 away from the push rod 35. The push cylinder 37 is located around the push rod 35 and is slidably connected to the push rod 35. The end of the push cylinder 37 away from the push rod 35 abuts against the driven wheel 24.

[0047] Among them, a push ring 38 is fixedly connected to the periphery of the push cylinder 37, and two support rods 39 are fixedly connected to the periphery of the push ring 38. The two support rods 39 are respectively close to the snap-fit ​​plates 33 at both ends. A connecting plate 310 is rotatably connected to the periphery of the support rods 39, and a limit block 311 is rotatably connected to the end of the connecting plate 310 away from the support rods 39.

[0048] The limiting block 311 has a limiting groove 312 at its bottom, and a limiting rod 313 is slidably connected inside the limiting groove 312. The lower end of the limiting rod 313 is fixedly connected to the inner wall of the snap-fit ​​groove 31, and the end of the limiting block 311 away from the connecting plate 310 abuts against the snap-fit ​​plate 33.

[0049] When the sliding wheel 23 is reset, it is pushed towards the driven wheel 24 again. Since the pushing cylinder 37 abuts against the driven wheel 24, it slides around the pushing rod 35 when the sliding wheel 23 is pushed, while simultaneously compressing the spring 36. The pushing cylinder 37 drives the connecting plate 310 to rotate via the pushing ring 38. Since the limiting block 311, which is rotatably connected to the connecting plate 310, is limited by the limiting rod 313, when the pushing ring 38 slides away from the driven wheel 24, the limiting blocks 311 at both ends move towards both ends. At this time, the limiting blocks 311... 1. Push out the locking block so that it no longer locks the driven wheel 24. Push the sliding wheel 23 to retract the telescopic cylinder 26 and the telescopic plate 27. The limiting block 311 is fixed on the track by the limiting rod 313. Driven by the connecting plate 310, the locking block is forced outward to avoid the locking block sticking due to salt spray agglomeration, component wear or installation deviation. After releasing the sliding wheel 23, the spring 36 pushes the pushing cylinder 37 to reset, which drives the connecting plate 310 and the limiting block 311 back to the initial position, preparing for the next locking action without the need for additional reset operation.

[0050] The working process and usage of this invention:

[0051] When conducting a salt spray corrosion test on the valve, the valve is placed inside the sliding wheel 23. The sliding wheel 23 is pulled, and it slides around the fixed rod 22 until it slides to the driven side. The sliding wheel 23 is then engaged by the locking mechanism 3. At this time, the drive motor 11 is started. The drive motor 11 drives the drive wheel 21 to rotate through the motor output shaft 12. The drive wheel 21 drives the sliding wheel 23 to rotate through the fixed rod 22. At this time, the sliding wheel 23 drives the driven wheel 24 to rotate around the positioning rod 25 through the locking mechanism 3. When the drive wheel 21, the fixed rod 22 and the sliding wheel 23 rotate, the air inside the main body 1 of the testing machine can be moved through the telescopic plate 27, forming an air circulation inside the main body 1 of the testing machine. This fully mixes the salt spray inside the main body 1 with the air, and conducts a continuous corrosion resistance test on the valve.

[0052] When the sliding wheel 23 is pulled, the sliding wheel 23 slides around the fixed rod 22, and at the same time, it drives the telescopic cylinder 26 to slide through the telescopic rod 28. Since the telescopic cylinders 26 are connected in sequence and the telescopic cylinders 26 are fixedly connected to the telescopic plate 27, the connected telescopic cylinders 26 and the telescopic plate 27 are pulled out one by one.

[0053] After the sliding wheel 23 is engaged with the driven wheel 24 through the snap-fit ​​mechanism 3, the rotating ring 212 is rotated. The rotating ring 212 drives the rotating rod 210 to rotate inside the rotating groove 29. At the same time, the other end of the rotating rod 210 rotates between the arc plate 211 and the telescopic plate 27. The rotating rod 210 abuts against the arc plate 211 and pushes the arc plate 211. At this time, the arc plate 211 drives the telescopic plate 27 to rotate. The telescopic plate 27 tilts up to facilitate air circulation between the inside of the telescopic plate 27 and the inside of the testing machine body 1. When the drive wheel 21 drives the telescopic plate 27 to rotate, the salt spray and air inside the testing machine body 1 can enter the inside of the telescopic plate 27 through the gap of the tilted telescopic plate 27.

[0054] When the sliding wheel 23 is engaged, when the sliding wheel 23 approaches the driven wheel 24, the engaging plate 33 abuts against the inclined surface of the driven wheel 24 and continuously pushes the sliding wheel 23. The engaging plate 33 sweeps over the inclined surface of the driven wheel 24. At this time, the engaging plate 33 rotates around the engaging rod 32 until the engaging plate 33 engages with the driven wheel 24. Since a torsion spring 34 is provided between the engaging rod 32 and the engaging plate 33, the engaging plates 33 on both sides can engage the driven wheel 24.

[0055] When the sliding wheel 23 is reset, it is pushed toward the driven wheel 24 again. Since the push cylinder 37 abuts against the driven wheel 24, the push cylinder 37 slides around the push rod 35 when the sliding wheel 23 is pushed, and at the same time, the spring 36 is squeezed. The push cylinder 37 drives the connecting plate 310 to rotate through the push ring 38. Since the limiting block 311 connected to the connecting plate 310 is limited by the limiting rod 313, when the push ring 38 slides away from the driven wheel 24, the limiting blocks 311 at both ends move toward both ends. At this time, the limiting block 311 pushes out the locking block, so that the locking block no longer locks the driven wheel 24. The sliding wheel 23 can retract the telescopic cylinder 26 and the telescopic plate 27.

[0056] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A corrosion resistance testing apparatus, comprising: The main body of the testing machine (1) includes a drive motor (11), the drive motor (11) is located outside the main body of the testing machine (1), and one end of the drive motor (11) is provided with a motor output shaft (12), the motor output shaft (12) is located inside the main body of the testing machine (1); Its characteristic is that it further includes: An internal circulation mechanism (2) is located inside the main body (1) of the testing machine. The internal circulation mechanism (2) is used to uniformly distribute the salt spray density inside the main body (1) of the testing machine. The internal circulation mechanism (2) includes a drive wheel (21) provided at the end of the motor output shaft (12) away from the drive motor (11). The drive wheel (21) is fixedly connected to the motor output shaft (12). The drive wheel (21) is rotatably connected to the main body (1) of the testing machine. A fixed rod (22) is fixedly connected at the end of the drive wheel (21) away from the drive motor (11). A sliding wheel (23) is slidably connected at the end of the fixed rod (22) away from the drive wheel (21). The fixed rod (22) passes through the sliding wheel (23). A driven wheel (24) is provided at the end of the sliding wheel (23) away from the fixed rod (22). The locking mechanism (3) is located between the sliding wheel (23) and the driven wheel (24), and the locking mechanism (3) can lock the sliding wheel (23) and the driven wheel (24).

2. The corrosion resistance testing equipment according to claim 1, characterized in that: The fixed rod (22) is fixedly connected to the driven wheel (24) at the end away from the drive wheel (21). The driven wheel (24) has a positioning rod (25) in the center. The driven wheel (24) is located around the positioning rod (25) and is rotatably connected to the positioning rod (25).

3. The corrosion resistance testing equipment according to claim 2, characterized in that: The locking mechanism (3) includes a locking groove (31) opened at one end of the sliding wheel (23) near the driven wheel (24). Two locking rods (32) are fixedly connected to the inner wall of the locking groove (31). A locking plate (33) is rotatably connected to the periphery of each locking rod (32). The end of the locking plate (33) away from the locking rod (32) is locked with the driven wheel (24).

4. The corrosion resistance testing equipment according to claim 1, characterized in that: The drive wheel (21) is provided with a plurality of telescopic cylinders (26) near the sliding wheel (23). Each telescopic cylinder (26) is sequentially sleeved and slidably connected to the drive wheel (21). A plurality of telescopic plates (27) are fixedly connected to one side of the telescopic cylinder (26). Each telescopic plate (27) is sequentially sleeved and fixedly connected to the corresponding telescopic cylinder (26).

5. The corrosion resistance testing equipment according to claim 4, characterized in that: A telescopic rod (28) is provided inside the telescopic cylinder (26) near one end of the sliding wheel (23). The telescopic rod (28) is slidably connected to the telescopic cylinder (26), and one end of the telescopic rod (28) is fixedly connected to the sliding wheel (23).

6. The corrosion resistance testing equipment according to claim 4, characterized in that: A rotating groove (29) is provided at the end of the drive wheel (21) away from the telescopic plate (27). A rotating rod (210) is slidably connected inside the rotating groove (29). The end of the rotating rod (210) away from the rotating groove (29) is located above the telescopic plate (27). An arc plate (211) is fixedly connected to the outer wall of the telescopic plate (27). The rotating rod (210) is located between the arc plate (211) and the telescopic plate (27). A rotating ring (212) is fixedly connected to the end of the rotating rod (21) near the drive wheel (21). The rotating ring (212) is rotatably connected to the drive wheel (21).

7. The corrosion resistance testing equipment according to claim 3, characterized in that: The snap-fit ​​mechanism (3) includes a torsion spring (34) fixedly connected to the outer wall of the snap-fit ​​rod (32). The end of the torsion spring (34) away from the snap-fit ​​rod (32) is fixedly connected to the snap-fit ​​plate (33). The two snap-fit ​​plates (33) are symmetrically distributed. The driven wheel (24) is inclined at the end near the sliding wheel (23).

8. The corrosion resistance testing equipment according to claim 3, characterized in that: A push rod (35) is fixedly connected to the inner wall of the snap-fit ​​groove (31). The push rod (35) is located between two snap-fit ​​rods (32). A spring (36) is fixedly connected to the end of the push rod (35) away from the inner wall of the snap-fit ​​groove (31). A push cylinder (37) is fixedly connected to the end of the spring (36) away from the push rod (35). The push cylinder (37) is located around the push rod (35) and is slidably connected to the push rod (35). The end of the push cylinder (37) away from the push rod (35) abuts against the driven wheel (24).

9. The corrosion resistance testing equipment according to claim 8, characterized in that: The push cylinder (37) is fixedly connected to a push ring (38), and the push ring (38) is fixedly connected to two support rods (39). The two support rods (39) are respectively close to the snap-fit ​​plates (33) at both ends. The support rods (39) are rotatably connected to a connecting plate (310), and the end of the connecting plate (310) away from the support rods (39) is rotatably connected to a limit block (311).

10. The corrosion resistance testing equipment according to claim 9, characterized in that: The bottom of the limiting block (311) has a limiting groove (312), and a limiting rod (313) is slidably connected inside the limiting groove (312). The lower end of the limiting rod (313) is fixedly connected to the inner wall of the snap-fit ​​groove (31), and the end of the limiting block (311) away from the connecting plate (310) abuts against the snap-fit ​​plate (33).

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