Clamping device for polishing gas analysis sample in steel

Abstract

The utility model discloses a clamping device for polishing a gas analysis sample in steel, which comprises an adjusting structure and a clamping structure extending along the axial direction of the sample, the clamping structure comprises at least two clamping pieces uniformly arranged along the circumferential direction of the sample at intervals, a plurality of clamping pieces form a clamping hole channel, and the clamping hole channel is communicated with the adjusting structure. The adjusting structure comprises a fixing piece and an adjusting piece. According to the sample clamping device, the multiple clamping pieces can be controlled to contract inwards at the same time by moving the adjusting piece, so that the sample is clamped, it is guaranteed that the sample can be subjected to uniform and stable clamping force in the clamping process, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of steel gas sample treatment, in particular to a clamping device for grinding steel gas analysis samples. Background Art

[0002] The analysis of gas content in steel is a necessary inspection item for many high-quality steels and super-grade steels. Especially for the oxygen content in steel, strict requirements are imposed. The accuracy of oxygen content analysis depends on the quality of sample preparation.

[0003] At present, the gas detection steel samples used by iron and steel enterprises are about Φ5mm*150mm rod-shaped samples. The outer surface of the samples is attached with mill scale and may also have a large number of defects such as sand holes and slag inclusions. The surface treatment of gas samples usually relies on manual grinding. The operator holds the sample and uses a belt sander to grind off the surface mill scale, which not only easily contaminates the sample but also has serious safety hazards.

[0004] The Chinese utility model patent with the application number CN202122658675.3 discloses a manual sample grinder for steel gas samples, including a sample clamping device, a sample grinding device body, a sample grinding handle, and a needle-shaped sample body. The sample grinding handle is installed at the bottom of the sample grinding device body, the sample clamping device is fixed at the top of the sample grinding device body, an assembly groove is provided inside the sample clamping device and the sample grinding device body, the needle-shaped sample body is installed inside the assembly groove, and the first clamping blocks matching the needle-shaped sample body are uniformly welded inside the assembly groove. It realizes the clamping of the sample by rotating the screw to push the second clamping block to move, while the first clamping block is fixed, which easily leads to uneven distribution of the clamping force exerted on the sample by the first clamping block and the second clamping block, thus damaging the surface of the sample. Content of the Utility Model

[0005] The purpose of the utility model is to provide a clamping device for grinding steel gas analysis samples to solve the problem of uneven distribution of clamping force when the existing clamping device clamps the sample.

[0006] The utility model is realized by the following technical solutions.

[0007] A clamping device for grinding a gas analysis sample in steel, comprising an adjusting structure and a clamping structure extending along the axial direction of the sample. The clamping structure includes at least two clamping members evenly spaced along the circumferential direction of the sample. A clamping hole is formed by the plurality of clamping members. The adjusting structure includes a fixing member and an adjusting member. One end of the clamping structure is fixedly connected to the fixing member. The adjusting member is sleeved outside the clamping structure and abuts against the outer surface of the clamping structure. The outer diameter of the clamping structure gradually increases from the fixing member in a direction away from the fixing member. The adjusting member is movably installed on the adjusting structure so that the adjusting member can move along the axial direction of the clamping structure.

[0008] As a further improvement of the present utility model, the adjusting member is sleeved outside the fixing member, and the adjusting member and the fixing member are in threaded cooperation.

[0009] As a further improvement of the present utility model, the adjusting member is sleeved outside the hand fixing member, and the adjusting member and the fixing member are in clamping cooperation.

[0010] As a further improvement of the present utility model, the number of the clamping members is set to two or three.

[0011] As a further improvement of the present utility model, one end of the clamping member away from the clamping hole is provided with an arc surface matching the inner wall of the adjusting member.

[0012] As a further improvement of the present utility model, one end of the clamping member close to the clamping hole is concave inwards so that the plurality of clamping members can enclose to form a cylindrical clamping hole.

[0013] As a further improvement of the present utility model, a hand-held portion is formed at one end of the fixing member away from the clamping structure.

[0014] As a further improvement of the present utility model, an anti-slip structure is provided on the hand-held portion.

[0015] As a further improvement of the present utility model, a wear-resistant material layer is coated on the clamping member.

[0016] The beneficial effects of the present utility model:

[0017] The present utility model provides a clamping device for grinding a gas analysis sample in steel. Moving the adjusting member can control the plurality of clamping members to contract inwards simultaneously, thereby realizing clamping of the sample. This not only ensures that the sample can be clamped by a uniform and stable clamping force during the clamping process, but also is convenient to operate. Description of the drawings

[0018] The following will describe in detail the preferred embodiments of the present utility model with the help of drawings to facilitate understanding of the purpose and advantages of the present utility model, wherein:

[0019] Figure 1 This is the front view of the clamping device of the present utility model;

[0020] Figure 2 This is the left view of the clamping device of the present utility model;

[0021] In the figure:

[0022] 1. Adjusting structure; 11. Adjusting member; 12. Fixing member; 2. Clamping structure; 21. Clamping member; 22. Clamping channel; 3. Specimen. Specific embodiments

[0023] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0024] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top member, bottom member, etc., which are mentioned or may be mentioned, are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific member. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0025] This embodiment provides a clamping device for grinding a specimen for gas analysis in steel. Referring to Figures 1-2 , it includes an adjusting structure 1 and a clamping structure 2 fixedly connected to a fixing member 12. The clamping structure 2 extends along the axial direction of the specimen 3. The clamping structure 2 includes at least two clamping members 21 evenly spaced along the circumferential direction of the specimen 3. A plurality of clamping members 21 enclose to form a clamping channel 22 for accommodating the specimen 3. The adjusting structure 1 includes a fixing member 12 and an adjusting member 11. The adjusting member 11 is sleeved outside the clamping structure 2 and the inner wall of the adjusting member 11 abuts against the outer surface of the clamping structure 2. The adjusting member 11 is in a cylindrical shape. At the same time, the outer diameter of the clamping structure 2 gradually increases from the fixing member 12 in the direction away from the fixing member 12. The adjusting member 11 is movably installed on the fixing member 12 so that the adjusting member 11 can move along the axial direction of the clamping structure 2.

[0026] In specific use, when it is necessary to clamp the specimen 3, the specimen 3 is placed in the clamping structure 2, and the adjusting member 11 is controlled to move from the fixing member 12 towards the direction close to the clamping structure 2. At this time, the clamping structure 2 will gradually contract inward under the extrusion of the adjusting member 11, making the clamping channel 22 gradually smaller, so as to realize the clamping of the specimen 3. When it is necessary to take out the specimen 3, when the adjusting member 11 is controlled to move from the clamping structure 2 towards the direction close to the fixing member 12, the adjusting member 11 gradually disengages from the clamping structure 2, that is, the clamping structure 2 will gradually expand outward, making the clamping channel 22 gradually larger, so as to loosen the specimen 3.

[0027] In this device, by moving the adjusting member 11 to control the size of the clamping channel 22, not only is the operation convenient, but also by controlling the adjusting member 11 to move, multiple clamping members 21 contract inward simultaneously to realize the clamping of the specimen 3, ensuring that the specimen 3 can be clamped by a uniform and stable clamping force during the clamping process.

[0028] Preferably, the adjusting member 11 and the fixing member 12 are in a threaded fit. Specifically, the adjusting member 11 is sleeved outside the fixing member 12. The inner surface of the adjusting member 11 is provided with internal threads extending along the axial direction of the clamping structure 2, and the outer surface of the fixing member 12 is provided with external threads matching the internal threads on the adjusting member 11. During use, only by rotating the adjusting member 11 can the movement of the adjusting member 11 on the fixing member 12 be realized. The operation is convenient, and the threaded connection structure is relatively stable, which can ensure that the clamping of the specimen 3 by the clamping structure 2 is not easy to loosen.

[0029] In some embodiments, the adjusting member 11 and the fixing member 12 can also be set to a snap-fit structure. Specifically, the adjusting member 11 is sleeved outside the fixing member 12. The inner surface of the adjusting member 11 is provided with a clamping groove extending along the axial direction of the clamping mechanism, and the outer surface of the fixing member 12 is provided with clamping teeth matching the clamping groove on the adjusting member 11. Pushing the adjusting member 11 can make the adjusting member 11 move along the axial direction of the clamping structure 2, and the operation is convenient.

[0030] Preferably, the number of clamping members 21 in the clamping structure 2 is set to two or three, which can simplify the composition of the clamping structure 2, thereby reducing the processing and manufacturing difficulty.

[0031] In this embodiment, the end of the clamping member 21 away from the clamping channel 22 is an arc surface matching the inner wall of the adjusting member 11, so that the contact area of the clamping member 21 when contacting the adjusting member 11 is larger, reducing local stress concentration, which helps to improve the service life of this device.

[0032] At the same time, the end of the clamping member 21 close to the specimen 3 is set to be an arc recessed inward, that is, multiple clamping members 21 can enclose a cylindrical clamping channel 22. The cylindrical clamping channel 22 has a high shape matching degree with the specimen 3, which helps to improve the clamping stability.

[0033] In this embodiment, a holding portion is formed at one end of the fixing member 12 away from the clamping structure 2. The holding portion can be used to prevent the operator's hand from directly contacting the specimen 3, thereby causing contamination to the specimen 3. At the same time, in order to improve the stability of the operator's grip when grinding the specimen 3, an anti-slip structure is provided on the fixing member 12. By providing the anti-slip structure, the friction between the operator's hand and the holding portion can be increased. Preferably, the anti-slip structure can be anti-slip lines formed on the holding portion.

[0034] In this embodiment, a wear-resistant material layer is coated on the clamping member 21. During use, it can reduce the wear between the clamping member 21 and the specimen 3, keep the shape and size of the clamping member 21 stable, and contribute to improving the clamping stability.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamping device for grinding a gas analysis sample in steel, characterized in that, It includes an adjusting structure (1) and a clamping structure (2) arranged to extend axially along the specimen (3). The clamping structure (2) includes at least two clamping members evenly spaced along the circumferential direction of the specimen (3). A clamping channel (22) is formed by the plurality of clamping members (21). The adjusting structure (1) includes a fixing member (12) and an adjusting member (11). One end of the clamping structure (2) is fixedly connected to the fixing member (12). The adjusting member (11) is sleeved outside the clamping structure (2) and abuts against the outer surface of the clamping structure (2). The outer diameter of the clamping structure (2) gradually increases from the fixing member (12) in the direction away from the fixing member (12). The adjusting member (11) is movably installed on the adjusting structure (1) so that the adjusting member (11) can move axially along the clamping structure (2). When clamping the specimen, control the adjusting member (11) to move from the fixing member (12) towards the direction close to the clamping structure (2). The clamping structure (2) will gradually contract inward under the extrusion of the adjusting member (11), making the clamping channel (22) gradually smaller. When taking out the specimen, control the adjusting member (11) to move from the clamping structure (2) towards the direction close to the fixing member (12). The adjusting member (11) gradually disengages from the clamping structure (2), and the clamping structure (2) gradually expands outward, making the clamping channel (22) gradually larger.

2. The clamping device for grinding a gas analysis sample in steel according to claim 1, characterized in that, The adjusting member (11) is sleeved outside the fixing member (12), and the adjusting member (11) is in threaded fit with the fixing member (12).

3. The clamping device for grinding a gas analysis sample in steel according to claim 1, characterized in that, The adjusting member (11) is sleeved outside the fixing member (12), and the adjusting member (11) is in clamping fit with the fixing member (12).

4. The clamping device for polishing a gas analysis sample in steel according to claim 1, characterized in that, The clamping member (21) is provided with two or three.

5. A clamping device for polishing a gas analysis sample in steel according to claim 1, characterized in that, One end of the clamping member (21) away from the clamping channel (22) is provided with an arc-shaped surface matching the inner wall of the adjusting member (11).

6. The clamping device for grinding a gas analysis sample in steel according to claim 1, characterized in that, One end of the clamping member (21) close to the clamping channel (22) is concave inwards so that the plurality of clamping members (21) can enclose to form a cylindrical clamping channel (22).

7. A clamping device for grinding a gas analysis sample in steel according to claim 1, characterized in that, One end of the fixing member (12) away from the clamping structure (2) forms a hand-held part.

8. The clamping device for grinding a gas analysis sample in steel according to claim 7, characterized in that, The hand-held part is provided with an anti-slip structure.

9. The clamping device for grinding a gas analysis sample in steel according to claim 1, characterized in that, The clamping member (21) is coated with a wear-resistant material layer.

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