A corrosion resistance testing device and method for producing anti-falling nuts

Abstract

The present invention provides a corrosion resistance testing device and method for anti-falling nut production, which relates to the field of corrosion resistance testing technology, and comprises: a brine storage unit, a driving unit, a friction unit, a storage unit and a connecting unit; the driving unit is installed inside the brine storage unit; the friction unit is installed on the driving unit, and the friction unit is used for the anti-falling nut during the friction test; the storage unit is installed on the rear side of the brine storage unit, and the storage unit is used to store brine in the brine storage unit; the connecting unit is installed on the driving unit and the storage unit; the friction plate of the present invention has a friction effect on the anti-falling nut on the top of the support plate, which is conducive to observing the corrosion resistance of the anti-falling nut after wear; and solves the problem that the anti-corrosion layer on the surface of the anti-falling nut cannot be automatically rubbed during the corrosion resistance test, which is inconvenient for the staff to know the corrosion resistance of the anti-falling nut after wear.

Description

Technical Field

[0001] The present invention belongs to the technical field of corrosion resistance testing, and more specifically, particularly relates to a corrosion resistance testing device and method for producing anti-dropping nuts. Background Art

[0002] Anti-falling nuts are a special nut design that aims to prevent them from falling off from the thread under vibration or external force, ensuring the stability of the connection; its main feature is the necking process on the threaded part, so that the nut can be stuck in the screw hole after disassembly to prevent it from falling off; Anti-falling nuts require the use of corrosion resistance testing equipment during production. Anti-falling nut corrosion resistance test refers to the detection of the corrosion resistance of anti-falling nuts in a corrosive environment to ensure their use effect and life in a specific environment.

[0003] The corrosion resistance testing devices currently in use still have the following problems: 1. During the corrosion resistance test, the anti-corrosion layer on the surface of the anti-falling nut cannot be automatically rubbed, which makes it inconvenient for the staff to know the corrosion resistance of the anti-falling nut after wear; 2. During the corrosion resistance test, the staff is required to frequently place the anti-falling nuts in salt water, and the staff is also required to frequently remove the anti-falling nuts from the salt water, resulting in greater labor intensity for the staff. Summary of the invention

[0004] The disclosed embodiments relate to a corrosion resistance testing device and method for the production of anti-dropping nuts, which comprises a driving unit, a friction unit, a storage unit and a connecting unit; the friction plate has a friction effect on the anti-dropping nut on the top of the support plate, which is beneficial to observe the corrosion resistance of the anti-dropping nut after wear; after the movable storage plate is reset forward, the salt water in the rectangular storage cover will enter the rectangular storage cover, so that the salt water contacts the anti-dropping nut after friction; the bottom of the friction plate is also in a separated state from the anti-dropping nut, which is convenient for the anti-dropping nut to contact with the outside air, which is beneficial to improve the corrosion efficiency of the anti-dropping nut; the problems of being unable to automatically rub the anti-corrosion layer on the surface of the anti-dropping nut and the heavy labor intensity of the staff are solved.

[0005] In a first aspect of the present disclosure, a corrosion resistance testing device for producing anti-dropping nuts is provided, comprising: a salt water storage unit, a driving unit, a friction unit, a storage unit and a connection unit; the driving unit is installed inside the salt water storage unit;

[0006] The friction unit is installed on the driving unit, and the friction unit is used to prevent the nut from falling off during the friction test; the storage unit is installed on the rear side of the salt water storage unit, and the storage unit is used to store the salt water in the salt water storage unit; the connection unit is installed on the driving unit and the storage unit;

[0007] The salt water storage unit comprises: a salt water storage box, a support plate and a sealing plug; the support plate is fixedly installed inside the salt water storage box; the sealing plug is threadedly connected to the salt water storage box.

[0008] In at least some embodiments, the driving unit includes: a mounting bracket, a linear electric cylinder and a lifting bracket; the mounting bracket is fixedly installed inside the brine storage box; there are two linear electric cylinders, and the two linear electric cylinders are fixedly installed on the mounting bracket; the lifting bracket is fixedly installed on the output shafts of the two linear electric cylinders.

[0009] In at least some embodiments, the drive unit further includes: an octagonal rod, a movable mounting plate and a coil spring A; there are two octagonal rods in total, and the two octagonal rods are fixedly mounted on the lifting bracket; there are two movable mounting plates in total, and the two movable mounting plates are slidably mounted on the outside of the two octagonal rods; there are two coil springs A in total, and the two coil springs A are mounted on the outside of the two octagonal rods, and the two coil springs A are located on the front side of the two movable mounting plates.

[0010] In at least some embodiments, the friction unit includes: a circular guide rod A, a friction plate and a limit clamp A; there are four circular guide rods A in total, and the four circular guide rods A are slidably mounted on two movable mounting plates; the friction plate is fixedly mounted on the bottom of the four circular guide rods A; there are four limit clamps A in total, and the four limit clamps A are fixedly mounted on the top ends of the four circular guide rods A, and the bottoms of the four limit clamps A are in contact with the two movable mounting plates.

[0011] In at least some embodiments, the friction unit also includes: a coil spring B and a linkage push block; there are four coil springs B in total, and the four coil springs B are installed on the outside of four circular guide rods A, and the four coil springs B are located between two movable mounting plates and the friction plate; there are three linkage push blocks in total, and the three linkage push blocks are fixedly installed on the top of the friction plate; the three linkage push blocks are slidably connected to the lifting bracket, and two semicircular protrusions are respectively provided on the rear sides of the three linkage push blocks.

[0012] In at least some embodiments, the storage unit includes: a rectangular storage cover, a rectangular guide block and a circular guide rod B; the rectangular storage cover is fixedly installed on the rear side of the brine storage box; there are three rectangular guide blocks in total, and the three rectangular guide blocks are fixedly installed inside the rectangular storage cover; there are three circular guide rods B in total, and the three circular guide rods B are slidably installed on the three rectangular guide blocks.

[0013] In at least some embodiments, the storage unit also includes: a movable storage plate, a limit clamp ring B and a coil spring C; the movable storage plate is slidably installed inside the rectangular storage cover, and a sealing ring is provided on the movable storage plate, and the rear side of the movable storage plate is fixedly connected to the three circular guide rods B; there are three limit clamp rings B in total, and the three limit clamp rings B are fixedly installed on the outside of the three circular guide rods B, and the front sides of the three limit clamp rings B are in contact with the three rectangular guide blocks; there are three coil springs C in total, and the three coil springs C are installed on the outside of the three circular guide rods B, and the three coil springs C are located between the three rectangular guide blocks and the movable storage plate.

[0014] In at least some embodiments, the connecting unit includes: a connecting frame A and a connecting frame B; there are three connecting frames A in total, and the three connecting frames A are fixedly installed on the brine storage box; there are three connecting frames B in total, and the three connecting frames B are fixedly installed on the rear side of the rectangular storage cover.

[0015] In at least some embodiments, the connecting unit also includes: supporting rollers and connecting steel ropes; there are three groups of supporting rollers, and the three groups of supporting rollers are rotatably mounted on three connecting frames A and three connecting frames B; there are three connecting steel ropes, and the upper ends of the three connecting steel ropes are fixedly mounted on the lifting bracket, and the lower ends of the three connecting steel ropes are fixedly mounted on three circular guide rods B; the three connecting steel ropes pass around the three groups of supporting rollers.

[0016] In at least some embodiments, the corrosion resistance test method for producing anti-falling nuts is:

[0017] Step 1: Pour the anti-drop nut to be tested onto the top of the support plate;

[0018] Step 2: Start the two linear electric cylinders through an external controller so that the output shafts of the two linear electric cylinders are fully extended;

[0019] Step 3: Start the two linear electric cylinders through an external controller to retract the output shafts of the two linear electric cylinders;

[0020] Step 4: Start the two linear electric cylinders through an external controller so that the output shafts of the two linear electric cylinders extend halfway;

[0021] Step 5. Repeat steps 3 and 4.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, when the output shafts of the two linear electric cylinders extend, the output shafts of the two linear electric cylinders can drive the lifting bracket to move downward; when the lifting bracket moves downward, the friction plate can also move downward, and the friction plate can always be in elastic contact with the anti-dropping nut on the top of the support plate under the action of four coil springs B;

[0024] In addition, when the three semicircular protrusions on the three linkage push blocks contact the lifting bracket, the lifting bracket can push the three linkage push blocks to move. At this time, the friction plate has a friction effect on the anti-falling nut on the top of the support plate; when the three semicircular protrusions on the three linkage push blocks are separated from the lifting bracket, the two coil springs A can drive the friction plate to reset and also realize the friction effect, which is conducive to observing the corrosion resistance of the anti-falling nut after wear.

[0025] 2. In the present invention, when the output shafts of the two linear electric cylinders are fully extended, the three connecting steel wires drive the three circular guide rods B and the movable receiving plate to move backward. After the movable receiving plate moves backward, a part of the brine in the brine storage box will enter the rectangular receiving cover, so that the highest liquid level of the brine is lower than the anti-dropping nut, thereby preventing the brine in the brine storage box from splashing out when the friction plate rubs the anti-dropping nut;

[0026] In addition, when the output shafts of the two linear electric cylinders are fully retracted, the three spiral springs C can drive the three circular guide rods B and the movable storage plate to reset forward. After the movable storage plate is reset forward, the salt water in the rectangular storage cover will enter the rectangular storage cover, so that the salt water contacts the anti-dropping nut after friction.

[0027] In addition, when the output shafts of the two linear electric cylinders are extended or retracted halfway, the highest liquid level of the brine is lower than the anti-dropping nut. At the same time, the bottom of the friction plate is separated from the anti-dropping nut, which facilitates the contact between the anti-dropping nut and the external air, which is beneficial to improve the corrosion efficiency of the anti-dropping nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0029] The drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0030] In the attached picture:

[0031] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0032] Figure 2 A schematic structural diagram of a salt water storage unit of the present invention is shown.

[0033] Figure 3 The present invention is shown Figure 1 Schematic diagram of the central cut structure.

[0034] Figure 4 The schematic diagram of the structure of the driving unit and the friction unit of the present invention is shown.

[0035] Figure 5 The present invention is shown Figure 4 Schematic diagram of the local enlarged structure of area A in the middle.

[0036] Figure 6 The present invention is shown Figure 3 Schematic diagram of the local enlarged structure of area B in the middle.

[0037] Figure 7 The present invention is shown Figure 1 Schematic diagram of the rear side perspective structure.

[0038] Figure 8 The schematic diagram of the structure of the storage unit of the present invention is shown.

[0039] Fig. 9 The schematic diagram of the structure of the connecting unit of the present invention is shown.

[0040] Fig.10 The present invention is shown Figure 3 Schematic diagram of the local enlarged structure of the C area in the middle.

[0041] List of reference numerals:

[0042] 100, brine storage unit; 101, brine storage box; 102, support plate; 103, sealing plug;

[0043] 200, drive unit; 201, mounting bracket; 202, linear electric cylinder; 203, lifting bracket; 204, octagonal rod; 205, movable mounting plate; 206, coil spring A;

[0044] 300, friction unit; 301, circular guide rod A; 302, friction plate; 303, limit collar A; 304, spiral spring B; 305, linkage push block; 3051, semicircular protrusion;

[0045] 400, storage unit; 401, rectangular storage cover; 402, rectangular guide block; 403, circular guide rod B; 404, movable storage plate; 405, limit collar B; 406, coil spring C;

[0046] 500, connecting unit; 501, connecting frame A; 502, connecting frame B; 503, supporting roller; 504, connecting wire rope. DETAILED DESCRIPTION

[0047] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0048] Example: Please refer to Figures 1 to 10 As shown: The present invention provides a corrosion resistance testing device for the production of anti-falling nuts, comprising: a brine storage unit 100, a driving unit 200, a friction unit 300, a storage unit 400 and a connecting unit 500; the driving unit 200 is installed inside the brine storage unit 100; the friction unit 300 is installed on the driving unit 200, and the friction unit 300 is used for the anti-falling nuts during the friction test; the storage unit 400 is installed on the rear side of the brine storage unit 100, and the storage unit 400 is used to store the brine in the brine storage unit 100; the connecting unit 500 is installed on the driving unit 200 and the storage unit 400; the brine storage unit 100 comprises: a brine storage box 101, a support plate 102 and a sealing plug 103; the support plate 102 is fixedly installed inside the brine storage box 101; the sealing plug 103 is threadedly connected to the brine storage box 101.

[0049] In the present disclosure, Figures 4 to 6 As shown, the drive unit 200 includes: a mounting bracket 201, a linear electric cylinder 202 and a lifting bracket 203; the mounting bracket 201 is fixedly mounted inside the salt water storage box 101; there are two linear electric cylinders 202, and the two linear electric cylinders 202 are fixedly mounted on the mounting bracket 201; the lifting bracket 203 is fixedly mounted on the output shafts of the two linear electric cylinders 202; the drive unit 200 also includes: an octagonal rod 204, a movable mounting plate 205 and a coil spring A206; there are two octagonal rods 204, and the two octagonal rods 204 are fixedly mounted on the lifting bracket 203; there are two movable mounting plates 205, and the two movable mounting plates 205 are slidably mounted on the outside of the two octagonal rods 204; there are two coil springs A206, and the two coil springs A206 are mounted on the outside of the two octagonal rods 204, and the two coil springs A206 are located on the front side of the two movable mounting plates 205;

[0050] The friction unit 300 includes: a circular guide rod A301, a friction plate 302 and a limit collar A303; there are four circular guide rods A301, and the four circular guide rods A301 are slidably mounted on two movable mounting plates 205; the friction plate 302 is fixedly mounted at the bottom of the four circular guide rods A301; there are four limit collars A303, and the four limit collars A303 are fixedly mounted at the top of the four circular guide rods A301, and the bottoms of the four limit collars A303 are in contact with the two movable mounting plates 205; the friction unit 300 It also includes: a coil spring B304 and a linkage push block 305; there are four coil springs B304, which are installed outside the four circular guide rods A301, and the four coil springs B304 are located between the two movable mounting plates 205 and the friction plate 302; there are three linkage push blocks 305, which are fixedly installed on the top of the friction plate 302; the three linkage push blocks 305 are slidably connected to the lifting bracket 203, and two semicircular protrusions 3051 are respectively opened on the rear sides of the three linkage push blocks 305;

[0051] Its specific function is as follows: since the lifting bracket 203 is fixedly mounted on the output shafts of the two linear electric cylinders 202, when the output shafts of the two linear electric cylinders 202 extend, the output shafts of the two linear electric cylinders 202 can drive the lifting bracket 203 to move downward; and since the four circular guide rods A301 are slidably mounted on the two movable mounting plates 205, and the friction plate 302 is fixedly mounted on the bottom of the four circular guide rods A301, and the four coil springs B304 are located between the two movable mounting plates 205 and the friction plate 302, when the lifting bracket 203 moves downward, the friction plate 302 can also move downward, and the friction plate 302 can always be in elastic contact with the anti-dropping nut on the top of the support plate 102 under the action of the four coil springs B304;

[0052] Because the two movable mounting plates 205 are slidably mounted on the outside of the two octagonal rods 204, and the three linkage push blocks 305 are slidably connected to the lifting bracket 203, and the rear sides of the three linkage push blocks 305 are respectively provided with two semicircular protrusions 3051, when the three semicircular protrusions 3051 on the three linkage push blocks 305 contact the lifting bracket 203, the lifting bracket 203 can push the three linkage push blocks 305 to move, at this time, the friction plate 302 has a friction effect on the anti-falling nut on the top of the support plate 102; and because the two coil springs A206 are mounted on the outside of the two octagonal rods 204, and the two coil springs A206 are located on the front sides of the two movable mounting plates 205, when the three semicircular protrusions 3051 on the three linkage push blocks 305 are separated from the lifting bracket 203, the two coil springs A206 can drive the friction plate 302 to reset, and can also achieve friction, which is conducive to observing the corrosion resistance of the anti-falling nut after wear.

[0053] In the present disclosure, Figure 6 , Figures 8 to 10 As shown, the storage unit 400 includes: a rectangular storage cover 401, a rectangular guide block 402 and a circular guide rod B403; the rectangular storage cover 401 is fixedly installed on the rear side of the salt water storage box 101; there are three rectangular guide blocks 402, and the three rectangular guide blocks 402 are fixedly installed inside the rectangular storage cover 401; there are three circular guide rods B403, and the three circular guide rods B403 are slidably installed on the three rectangular guide blocks 402; the storage unit 400 also includes: a movable storage plate 404, a limit collar B405 and a coil spring C406; the movable storage plate 404 is slidably installed on the rectangular storage The movable receiving plate 404 is provided with a sealing ring, and the rear side of the movable receiving plate 404 is fixedly connected with the three circular guide rods B403; there are three limit collars B405, and the three limit collars B405 are fixedly installed on the outside of the three circular guide rods B403, and the front sides of the three limit collars B405 are in contact with the three rectangular guide blocks 402; there are three coil springs C406, and the three coil springs C406 are installed on the outside of the three circular guide rods B403, and the three coil springs C406 are located between the three rectangular guide blocks 402 and the movable receiving plate 404;

[0054] The connection unit 500 includes: a connection frame A501 and a connection frame B502; there are three connection frames A501, and the three connection frames A501 are fixedly installed on the salt water storage box 101; there are three connection frames B502, and the three connection frames B502 are fixedly installed on the rear side of the rectangular storage cover 401; the connection unit 500 also includes: support rollers 503 and connection steel wire ropes 504; there are three groups of support rollers 503, and the three groups of support rollers 503 are rotatably installed on the three connection frames A501 and the three connection frames B502; there are three connection steel wire ropes 504, and the upper ends of the three connection steel wire ropes 504 are fixedly installed on the lifting bracket 203, and the lower ends of the three connection steel wire ropes 504 are fixedly installed on the three circular guide rods B403; the three connection steel wire ropes 504 pass around the three groups of support rollers 503;

[0055] Its specific function is as follows: because the upper ends of the three connecting steel wires 504 are fixedly mounted on the lifting bracket 203, and the lower ends of the three connecting steel wires 504 are fixedly mounted on the three circular guide rods B403, and the three connecting steel wires 504 pass around the three groups of supporting rollers 503, when the output shafts of the two linear electric cylinders 202 are fully extended, the three connecting steel wires 504 drive the three circular guide rods B403 and the movable storage plate 404 to move backwards, and after the movable storage plate 404 moves backwards, a part of the brine in the brine storage box 101 will enter the rectangular storage cover 401, so that the highest liquid level of the brine is lower than the anti-dropping nut, so as to avoid the brine in the brine storage box 101 from splashing out when the friction plate 302 rubs the anti-dropping nut; and because the three coil springs C406 are mounted on the three The circular guide rod B403 is outside, and the three coil springs C406 are located between the three rectangular guide blocks 402 and the movable receiving plate 404. When the output shafts of the two linear electric cylinders 202 are fully retracted, the three coil springs C406 can drive the three circular guide rods B403 and the movable receiving plate 404 to reset forward. After the movable receiving plate 404 is reset forward, the brine in the rectangular receiving cover 401 will enter the rectangular receiving cover 401, so that the brine contacts the anti-falling nut after friction; when the output shafts of the two linear electric cylinders 202 are extended or retracted by half, the highest liquid level of the brine is also lower than the anti-falling nut. At the same time, the bottom of the friction plate 302 is also in a separated state from the anti-falling nut, which is convenient for the anti-falling nut to contact with the external air, which is beneficial to improve the corrosion efficiency of the anti-falling nut.

[0056] In the embodiment of the present disclosure, a corrosion resistance test method for producing anti-falling nuts is provided:

[0057] Step 1: Pour the anti-drop nut to be tested onto the top of the support plate 102;

[0058] Step 2: Start the two linear electric cylinders 202 through an external controller so that the output shafts of the two linear electric cylinders 202 are fully extended;

[0059] Step 3: Start the two linear electric cylinders 202 through an external controller, so that the output shafts of the two linear electric cylinders 202 are completely retracted;

[0060] Step 4: Start the two linear electric cylinders 202 through an external controller so that the output shafts of the two linear electric cylinders 202 extend halfway;

[0061] Step 5. Repeat steps 3 and 4.

[0062] The specific usage and function of this embodiment are as follows:

[0063] When the present invention is used, first, the anti-dropping nut to be tested is poured onto the top of the support plate 102, and the two linear electric cylinders 202 are started by an external controller, so that the output shafts of the two linear electric cylinders 202 are fully extended. When the output shafts of the two linear electric cylinders 202 are extended, the output shafts of the two linear electric cylinders 202 can drive the lifting bracket 203 to move downward. When the lifting bracket 203 moves downward, the friction plate 302 can also move downward. The friction plate 302 can be engaged with the anti-dropping nut on the top of the support plate 102 under the action of the four coil springs B304. Always in elastic contact; when the three semicircular protrusions 3051 on the three linkage push blocks 305 are in contact with the lifting bracket 203, the lifting bracket 203 can push the three linkage push blocks 305 to move. At this time, the friction plate 302 has a friction effect on the anti-falling nut on the top of the support plate 102; when the three semicircular protrusions 3051 on the three linkage push blocks 305 are separated from the lifting bracket 203, the two coil springs A206 can drive the friction plate 302 to reset, and can also achieve friction, which is conducive to observing the corrosion resistance of the anti-falling nut after wear;

[0064] When the output shafts of the two linear electric cylinders 202 are fully extended, the three connecting steel wires 504 drive the three circular guide rods B403 and the movable receiving plate 404 to move backwards. After the movable receiving plate 404 moves backwards, a part of the brine in the brine storage box 101 will enter the rectangular receiving cover 401, so that the highest liquid level of the brine is lower than the anti-dropping nut, thereby preventing the brine in the brine storage box 101 from splashing out when the friction plate 302 rubs the anti-dropping nut.

[0065] The two linear electric cylinders 202 are started by an external controller, so that the output shafts of the two linear electric cylinders 202 are completely retracted; when the output shafts of the two linear electric cylinders 202 are completely retracted, the three spiral springs C406 can drive the three circular guide rods B403 and the movable storage plate 404 to reset forward, and after the movable storage plate 404 is reset forward, the salt water in the rectangular storage cover 401 will enter the rectangular storage cover 401, so that the salt water contacts the anti-dropping nut after friction;

[0066] The two linear electric cylinders 202 are started by an external controller to extend the output shafts of the two linear electric cylinders 202 by half. When the output shafts of the two linear electric cylinders 202 are extended or retracted by half, the highest liquid level of the brine is lower than the anti-dropping nut. At the same time, the bottom of the friction plate 302 is also separated from the anti-dropping nut, which facilitates the contact between the anti-dropping nut and the external air, thereby improving the corrosion efficiency of the anti-dropping nut.

[0067] In this article, there are a few points to note:

[0068] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0069] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0070] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A corrosion resistance testing device for the production of anti-falling nuts, comprising: A salt water storage unit (100), a driving unit (200), a friction unit (300), a storage unit (400) and a connection unit (500); characterized in that the driving unit (200) is installed inside the salt water storage unit (100); The friction unit (300) is mounted on the driving unit (200), and the friction unit (300) is used to prevent the nut from falling off during the friction test; the storage unit (400) is mounted on the rear side of the salt water storage unit (100), and the storage unit (400) is used to store the salt water in the salt water storage unit (100); the connection unit (500) is mounted on the driving unit (200) and the storage unit (400); The salt water storage unit (100) comprises: a salt water storage box (101), a support plate (102) and a sealing plug (103); the support plate (102) is fixedly mounted inside the salt water storage box (101); the sealing plug (103) is threadedly connected to the salt water storage box (101); The driving unit (200) comprises: a mounting bracket (201), a linear electric cylinder (202) and a lifting bracket (203); the mounting bracket (201) is fixedly mounted inside the salt water storage box (101); two linear electric cylinders (202) are provided, and the two linear electric cylinders (202) are fixedly mounted on the mounting bracket (201); the lifting bracket (203) is fixedly mounted on the output shafts of the two linear electric cylinders (202); the driving unit (200) further comprises: an octagonal rod (204), a movable mounting plate (205) and a coil spring A (206); two octagonal rods (204) are provided in total, and the two octagonal rods (204) are fixedly mounted on the lifting bracket (203); two movable mounting plates (205) are provided in total, and the two movable mounting plates (205) are slidably mounted on the outside of the two octagonal rods (204); two coil springs A (206) are provided in total, and the two coil springs A (206) are mounted on the outside of the two octagonal rods (204), and the two coil springs A (206) are located on the front sides of the two movable mounting plates (205); The friction unit (300) comprises: a circular guide rod A (301), a friction plate (302) and a limit collar A (303); there are four circular guide rods A (301) in total, and the four circular guide rods A (301) are slidably mounted on two movable mounting plates (205); the friction plate (302) is fixedly mounted on the bottom of the four circular guide rods A (301); there are four limit collars A (303) in total, and the four limit collars A (303) are fixedly mounted on the top of the four circular guide rods A (301), and the bottoms of the four limit collars A (303) are in contact with the two movable mounting plates (205); the friction unit (30 0) also includes: a coil spring B (304) and a linkage push block (305); a total of four coil springs B (304) are provided, and the four coil springs B (304) are installed outside the four circular guide rods A (301), and the four coil springs B (304) are located between the two movable mounting plates (205) and the friction plate (302); a total of three linkage push blocks (305) are provided, and the three linkage push blocks (305) are fixedly installed on the top of the friction plate (302); the three linkage push blocks (305) are slidably connected to the lifting bracket (203), and the rear sides of the three linkage push blocks (305) are respectively provided with two semicircular protrusions (3051).

2. A corrosion resistance testing device for anti-falling nut production according to claim 1, characterized in that: The storage unit (400) comprises: a rectangular storage cover (401), a rectangular guide block (402) and a circular guide rod B (403); the rectangular storage cover (401) is fixedly mounted on the rear side of the salt water storage box (101); three rectangular guide blocks (402) are provided in total, and the three rectangular guide blocks (402) are fixedly mounted inside the rectangular storage cover (401); three circular guide rods B (403) are provided in total, and the three circular guide rods B (403) are slidably mounted on the three rectangular guide blocks (402).

3. A corrosion resistance testing device for anti-falling nut production according to claim 2, characterized in that: The storage unit (400) further comprises: a movable storage plate (404), a limit clamp ring B (405) and a coil spring C (406); the movable storage plate (404) is slidably mounted inside the rectangular storage cover (401), a sealing ring is provided on the movable storage plate (404), and the rear side of the movable storage plate (404) is fixedly connected to three circular guide rods B (403); there are three limit clamp rings B (405) in total, and the three limit clamp rings B (405) are fixedly mounted outside the three circular guide rods B (403), and the front sides of the three limit clamp rings B (405) are in contact with three rectangular guide blocks (402); there are three coil springs C (406) in total, and the three coil springs C (406) are mounted outside the three circular guide rods B (403), and the three coil springs C (406) are located between the three rectangular guide blocks (402) and the movable storage plate (404).

4. A corrosion resistance testing device for anti-falling nut production according to claim 2, characterized in that: The connection unit (500) comprises: a connection frame A (501) and a connection frame B (502); three connection frames A (501) are provided in total, and the three connection frames A (501) are fixedly installed on the salt water storage box (101); and three connection frames B (502) are provided in total, and the three connection frames B (502) are fixedly installed on the rear side of the rectangular storage cover (401).

5. A corrosion resistance testing device for anti-falling nut production according to claim 4, characterized in that: The connection unit (500) further comprises: support rollers (503) and connection steel wires (504); the support rollers (503) are provided in three groups, and the three groups of support rollers (503) are rotatably mounted on three connection frames A (501) and three connection frames B (502); the connection steel wires (504) are provided in three groups, and the upper ends of the three connection steel wires (504) are fixedly mounted on the lifting bracket (203), and the lower ends of the three connection steel wires (504) are fixedly mounted on three circular guide rods B (403); the three connection steel wires (504) pass around the three groups of support rollers (503).

6. A corrosion resistance test method for anti-falling nut production, using the corrosion resistance test device for anti-falling nut production as claimed in claim 1, characterized in that: The steps are as follows: Step 1: Pour the anti-drop nut to be tested onto the top of the support plate (102); Step 2: Start the two linear electric cylinders (202) through an external controller so that the output shafts of the two linear electric cylinders (202) are fully extended; Step 3: Start the two linear electric cylinders (202) through an external controller, so that the output shafts of the two linear electric cylinders (202) are completely retracted; Step 4: Start the two linear electric cylinders (202) through an external controller so that the output shafts of the two linear electric cylinders (202) extend halfway; Step 5. Repeat steps 3 and 4.

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