Test piece clamp for testing anti-rust performance

Abstract

The utility model discloses an anti-rust performance test piece clamp which comprises two L-shaped clamping plates arranged in a bilateral symmetry mode, the upper ends of the two L-shaped clamping plates are movably hinged, clamping grooves matched with a test piece in shape are formed in the lower ends of the opposite faces of the two L-shaped clamping plates, and a long bolt is transversely and movably arranged in the middles of the two L-shaped clamping plates in a penetrating mode. The middle of the long bolt is sleeved with an adjusting nut in a threaded mode, one end of the long bolt is sleeved with a locking nut located on the outer side of the L-shaped clamping plate in a threaded mode, and a supporting spring movably connected to the surface of the long bolt in a sleeving mode is arranged between the side, corresponding to the locking nut, of the adjusting nut and the L-shaped clamping plate. The locking nut is unscrewed, the supporting spring supports the two L-shaped clamping plates to be opened to be separated from the test piece, the test piece is replaced, the test piece is aligned with the clamping groove, the locking bolt is tightened, the two L-shaped clamping plates are pushed to clamp the test piece, clamping is more stable, the L-shaped clamping plates are taken to grind the test piece, force application is convenient, hands can be prevented from being scalded, the hands can be protected from being away from the abrasive belt to be accidentally injured, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of specimen clamps, in particular to a specimen clamp for rust prevention performance testing. Background Technique

[0002] In the petrochemical industry, it is very important to test the rust prevention performance of rust prevention additives. Most manufacturers use GB / T 2361 or SH / T 0081 as the standard for the test method of rust prevention performance. The specific method is to use a standard specimen, coat the specimen, place it in a specified test environment, and evaluate the rust degree of the specimen after the test time required by the product specifications.

[0003] For this test method, there are certain standards for the surface finish requirements of the specimen, and a series of operations such as grinding and cleaning are required. Among them, specimen grinding is extremely important, and both sides of the specimen need to be ground to a surface roughness of 0.2 - 0.4. During the grinding process, since the specimen is relatively thin, it is difficult to apply pressure directly by holding it by hand, and it is easy to accidentally injure the fingers. For some deeper rust spots, machine grinding is required. During this process, the specimen will get hot and it is even more impossible to hold it directly by hand. Therefore, we designed a specimen clamp for fixing the specimen to save manpower and ensure safety. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a specimen clamp for rust prevention performance testing, which is used to achieve the purpose of safely and stably clamping the specimen for convenient force application during grinding.

[0005] To solve the above technical problems, the utility model provides the following technical solutions:

[0006] A specimen clamp for rust prevention performance testing includes two L-shaped clamping plates symmetrically arranged left and right. The upper ends of the two L-shaped clamping plates are movably hinged. At the lower ends of the opposite surfaces of the two L-shaped clamping plates, clamping grooves adapted to the shape of the specimen are provided. A long bolt is horizontally movably penetrated through the middle parts of the two L-shaped clamping plates. An adjusting nut is threadedly sleeved on the middle part of the long bolt. A locking nut located outside the L-shaped clamping plate is threadedly sleeved on one end of the long bolt. A support spring movably sleeved on the surface of the long bolt is arranged between one side of the adjusting nut corresponding to the locking nut and the L-shaped clamping plate.

[0007] Preferably, the depth of the clamping groove is not less than half of the thickness of the specimen.

[0008] Preferably, a gasket movably sleeved on the surface of the long bolt is arranged between the support spring and the L-shaped clamping plate, and the locking nut is a flange nut.

[0009] Preferably, a through hole for movably plugging and installing a long bolt is provided on the L-shaped clamping plate corresponding to the locking nut, and a through groove for movably plugging and installing a long bolt is provided on the L-shaped clamping plate facing away from the locking nut, and the through groove is vertically arranged.

[0010] Preferably, a limiting groove corresponding to the position of the head of the long bolt and communicating with the through groove is provided on the outer side of the L-shaped clamping plate facing away from the locking nut. The vertical height of the limiting groove is greater than the height of the head of the long bolt, and the front and back inner walls of the limiting groove support the front and back of the head of the long bolt.

[0011] Preferably, anti-slip lines are horizontally arranged on the side wall of the clamping groove.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] The limiting groove restricts the rotation of the long bolt. When the locking nut is loosened, the supporting spring supports the two L-shaped clamping plates to open and separate from the test piece. When the L-shaped clamping plate rotates and changes the angle, the vertical through groove can adapt to the change of the angle between the long bolt and the L-shaped clamping plate. When replacing the test piece, align the test piece with the clamping groove and tighten the locking bolt to push the two L-shaped clamping plates to clamp the test piece, making the clamping more stable. When taking the L-shaped clamping plate to polish the test piece, it is convenient to apply force, which can not only prevent scalding hands but also protect the hands from being accidentally injured by the sand belt, making it safer, achieving the effects of simple structure, safe and stable clamping of the test piece, and convenient force application for polishing. Description of the Drawings

[0014] Figure 1 is the front view of the present utility model;

[0015] Figure 2 is the cross-sectional view of the L-shaped clamping plate of the present utility model corresponding to the long bolt;

[0016] Figure 3 is the top view of the present utility model;

[0017] Figure 4 is the left view of the present utility model;

[0018] Figure 5 is the right view of the L-shaped clamping plate corresponding to the through groove of the present utility model;

[0019] Figure 6 is the use and assembly drawing of the present utility model.

[0020] In the figure: 1. L-shaped clamping plate; 2. Test piece; 3. Clamping groove; 4. Long bolt; 5. Adjusting nut; 6. Locking nut; 7. Supporting spring; 8. Gasket; 9. Through hole; 10. Through groove; 11. Limiting groove; 12. Anti-slip line; 13. Sand belt. Detailed Description of the Preferred Embodiment

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1-6 shown, the present invention provides a technical solution: an anti-rust performance test coupon clip, including two L-shaped clamping plates 1 symmetrically arranged left and right. The upper ends of the two L-shaped clamping plates 1 are movably hinged. At the lower ends of the opposite surfaces of the two L-shaped clamping plates 1, clamping grooves 3 adapted to the shape of the test coupon 2 are provided. Anti-slip lines 12 are horizontally arranged on the side walls of the clamping grooves 3. The depth of the clamping grooves 3 is not less than half of the thickness of the test coupon 2, and the thickness of the test coupon 2 is greater than the depth of the clamping grooves 3.

[0023] A long bolt 4 is horizontally movably penetrated through the middle parts of the two L-shaped clamping plates 1. An adjusting nut 5 is threadedly sleeved on the middle part of the long bolt 4. One end of the long bolt 4 is threadedly sleeved with a locking nut 6 located outside the L-shaped clamping plate 1. A support spring 7 movably sleeved on the surface of the long bolt 4 is arranged between the adjusting nut 5 and the side of the L-shaped clamping plate 1 corresponding to the locking nut 6. A gasket 8 movably sleeved on the surface of the long bolt 4 is arranged between the support spring 7 and the L-shaped clamping plate 1. The locking nut 6 is a flange nut.

[0024] On the L-shaped clamping plate 1 corresponding to the locking nut 6, a through hole 9 for movably inserting and installing the long bolt 4 is provided. On the L-shaped clamping plate 1 facing away from the locking nut 6, a through groove 10 for movably inserting and installing the long bolt 4 is provided, and the through groove 10 is vertically arranged. On the outside of the L-shaped clamping plate 1 facing away from the locking nut 6, a limiting groove 11 corresponding to the position of the head of the long bolt 4 and communicating with the through groove 10 is provided. The vertical height of the limiting groove 11 is greater than the height of the head of the long bolt 4. The front and back inner walls of the limiting groove 11 support the front and back of the head of the long bolt 4.

[0025] The limiting groove 11 restricts the rotation of the long bolt 4. When the locking nut 6 is loosened, the support spring 7 supports the two L-shaped clamping plates 1 to open and separate from the test coupon 2. When the L-shaped clamping plates 1 rotate and change the angle, the vertical through groove 10 can adapt to the change in the angle between the long bolt 4 and the L-shaped clamping plate 1. When replacing the test coupon 2, align the test coupon 2 with the clamping groove 3, tighten the locking bolt, and push the two L-shaped clamping plates 1 to clamp the test coupon 2, making the clamping more stable. When holding the L-shaped clamping plate 1 to polish the test coupon 2, it is convenient to apply force, which can not only prevent scalding but also protect the hand from being accidentally injured by the sand belt, making it safer, achieving the effects of simple structure, safety, and stable clamping of the test coupon 2 for convenient force application and polishing.

[0026] It should be noted that, in this document, terms such as "including", "comprising", or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements not only includes those elements but also includes other elements not expressly listed, or elements that are inherent to such process, method, article, or device.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-rust performance test specimen clip, characterized in that: The invention comprises two L-shaped clamping plates (1) which are symmetrically arranged on the left and right, the upper ends of the two L-shaped clamping plates (1) are movably hinged, the lower ends of the opposite surfaces of the two L-shaped clamping plates (1) are provided with a slot (3) which is adapted to the shape of the test piece (2), a long bolt (4) is movably arranged in the middle of the two L-shaped clamping plates (1) and is horizontally movably penetrated, the middle part of the long bolt (4) is threadedly sleeved with an adjusting nut (5), one end of the long bolt (4) is threadedly sleeved with a locking nut (6) located on the outer side of the L-shaped clamping plate (1), and a support spring (7) movably sleeved on the surface of the long bolt (4) is arranged between the side of the adjusting nut (5) corresponding to the locking nut (6) and the L-shaped clamping plate (1).

2. The rust prevention performance test piece clip according to claim 1, characterized in that: The depth of the card slot (3) is not less than half the thickness of the test piece (2).

3. The anti-rust performance test piece clip according to claim 1, characterized in that: A gasket (8) movably sleeved on the surface of the long bolt (4) is provided between the support spring (7) and the L-shaped clamping plate (1), and the locking nut (6) is a flange nut.

4. The anti-rust performance test piece clamp according to claim 1, wherein: A through hole (9) for movably inserting and installing a long bolt (4) is provided on the L-shaped clamping plate (1) corresponding to the locking nut (6), and a through groove (10) for movably inserting and installing the long bolt (4) is provided on the L-shaped clamping plate (1) away from the locking nut (6), and the through groove (10) is vertically arranged.

5. The rust prevention performance test piece clip according to claim 4, characterized in that: A limiting groove (11) is arranged on the outer side of the L-shaped clamping plate (1) away from the locking nut (6), which corresponds to the position of the head of the long bolt (4) and is connected to the through groove (10); the vertical height of the limiting groove (11) is greater than the height of the head of the long bolt (4); the front side and the back side of the inner wall of the limiting groove (11) are supported on the front side and the back side of the head of the long bolt (4).

6. The rust prevention performance test piece clip according to claim 1, characterized in that: The wall side surface in the slot (3) is horizontally provided with anti-slip grooves (12).

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