Sample detection grinding protection holder

Abstract

This invention relates to the field of steelmaking testing, specifically to a sample protection holder for grinding samples. It includes a housing that can be fitted over the sample and a clamping assembly within the housing for clamping the sample. The housing has a cavity for accommodating the sample. The clamping assembly includes clamping bodies on the inner wall of the cavity. At least one set of clamping bodies, symmetrically positioned on opposite inner walls around the cavity's axis, are located within the cavity. The cavity is a frustoconical cavity, wider at the top and narrower at the bottom, and / or the clamping bodies form a clamping cavity that is wider at the top and narrower at the bottom. In use, the sample portion is inserted into the housing, exposing the grinding end, and is clamped by the clamping bodies. The spectrometer then uses the relatively large holder to press the sample against the grinding wheel for grinding. Because the holder is relatively large compared to the sample, it is easy for the worker to handle, and even if the sample accidentally falls off, the holder is less likely to slip out of the hand, making it safer and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of steelmaking testing, and specifically to a sample protection clamp for sample testing. Background Technology

[0002] During the steelmaking process, to ensure the composition of the finished product meets the expected standards as much as possible, a small amount of molten steel is poured into a sample cup during the steelmaking process to prepare a sample, which is then sent to the spectroscopic laboratory for composition analysis. Spectroscopic analysis is used to analyze the content of different elements. Based on the analysis values, if the content does not meet the standards, the element content of the entire furnace of molten steel is adjusted by adding the missing components to bring it within the customer's required range. Before the sample undergoes spectroscopic analysis, the ends of the sample need to be cut off, and then the excitation surface for spectral analysis is ground smooth on a sample grinding machine. Because the sample is small, the grinding process involves manually holding the sample by hand on a grinding wheel. Due to the high-speed rotation of the grinding wheel and the spectrometer operator's need to press the sample firmly, the sample is easily dislodged, causing the spectrometer operator's fingers to become blistered. Sometimes, hands are accidentally blistered, so extreme care must be taken during grinding, as the grinding process generates heat. Frequent breaks are necessary to prevent the sample from becoming too hot to handle directly. According to past statistics, every spectrometer operator in this workshop has experienced blisters on their fingers, with some requiring a week's leave in severe cases. Therefore, for safety reasons, it is essential to design a clamp that is convenient for spectroscopic workers to operate and safe for holding samples. Summary of the Invention

[0003] To address the problems in related technologies, this invention proposes a sample protection clamp for sample testing.

[0004] Therefore, the specific technical solution adopted by the present invention is as follows:

[0005] A sample protection holder for sample testing includes a housing that can be fitted over a sample and a clamping assembly disposed within the housing for clamping the sample. The housing has a cavity for accommodating the sample. The clamping assembly includes clamping bodies disposed on the inner wall of the cavity. The cavity has at least one set of clamping bodies located on opposite inner walls with the cavity axis as the center of symmetry. The cavity is a frustoconical cavity that is wider at the top and narrower at the bottom, and / or the clamping bodies form a clamping cavity that is wider at the top and narrower at the bottom.

[0006] Preferably, the clamping body is a plurality of clamping ridges distributed on the inner wall of the shell cavity.

[0007] Preferably, the clamping edge is a strip-shaped edge extending vertically along the inner wall surface of the shell cavity, and the clamping edge is inclined at least toward the inner edge end for pressing the sample towards the center of the shell cavity, and the distance between the inner edge end and the central axis of the shell cavity gradually increases from top to bottom.

[0008] Preferably, the inner edge of the clamping edge is arranged parallel to the wall surface of the shell cavity where the clamping edge is located, and the clamping edge is a triangular edge with a triangular cross-section evenly distributed on the inner wall surface of the shell cavity, or the inner edge of the clamping edge is also provided with several fine edges in parallel.

[0009] Preferably, the top of the housing has a push-out hole that penetrates the housing, and at least part of the outer side of the bottom of the housing has an outwardly extending guard edge, the lower end face of the guard edge being flush with or higher than the lower edge of the housing.

[0010] Preferably, the clamping body is an arc-shaped clamping plate with its arc opening facing the center of the shell cavity, the shell cavity is a frustum-shaped cavity, and the curvature of the arc-shaped clamping plate is consistent with the inner wall portion of the corresponding shell cavity. The clamping assembly also includes a lower brake rod, an upper brake rod, a pull line, a braking component, and a reset component. The pull line is connected between the upper and lower brake rods, and at least one of the upper and lower brake rods is provided with a reset component. The braking component is connected to the upper brake rod, and the lower brake rod is connected to the arc-shaped clamping plate.

[0011] Preferably, the reset component is a reset spring, and the braking component is a pressure plate vertically connected to the upper brake rod;

[0012] The inner wall of the shell cavity is provided with a groove. When the clamping body is not clamped, the clamping body is located in the groove, and the inner side facing the center of the shell cavity is flush with or recessed into the groove opening. When the clamping body is clamping the sample, the inner side of the clamping body extends beyond the groove opening. And / or the lower end of the arc-shaped clamping plate extends downward beyond the bottom end of the shell to form a guide section, and the guide section is provided with an outwardly folded limiting section.

[0013] Preferably, a protective cover is provided on the outer surface of the middle part of the outer periphery of the housing for each clamping body, or a protective cover is provided on the outer side of the housing. The lower brake rod is located inside the protective cover and its front end passes through the housing and is connected to the arc-shaped clamping plate. A return spring is sleeved on the part of the lower brake rod located outside the housing, and the pull line is connected to the rear end of the lower brake rod.

[0014] Preferably, the top of the housing is provided with a handle, the upper brake rod is located in the handle cavity at the top of the handle and the upper end of the upper brake rod is inserted into the handle and can move up and down relative to the handle, the pressure plate is vertically connected to the lower end of the upper brake rod, a return spring is sleeved on the upper brake rod, and the pull line is connected to the top of the upper brake rod.

[0015] Preferably, the handle is provided with a coil for connecting the top of the upper brake lever, and the pull wire for connecting each lower brake lever is connected to the edge of the coil. The pressure plate is a strip plate, and several finger grooves are arranged along its length at the bottom of the pressure plate. The handle is provided with a wire limiting ring.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. During use, the sample portion can be inserted into the housing, with the grinding end exposed, and the inserted portion is clamped in place by the clamping body. Then, the spectrometer uses the relatively large clamp to press the sample against the grinding wheel for grinding. Because the clamp is relatively large compared to the sample, it is easy for the worker to hold, and the housing can also be designed with hand gripping features to make the worker's grip more secure. Even if the sample accidentally falls off, the clamp is unlikely to slip out of the hand or cause injury, making it safer to use. Furthermore, the housing design provides heat insulation, allowing for prolonged grinding in one go, thus improving work efficiency.

[0018] The clamping body is mainly used to clamp the sample to ensure its stability during grinding. It also facilitates sample movement even before grinding after the housing is in place, preventing the sample from falling off, or allows for periodic observation of the ground surface from the grinding wheel during the grinding process. 2. This application features a simple structure, convenient operation, stable sample clamping, safe operation, and high grinding efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure with the sandwiched edge in this application;

[0021] Figure 2 This is a schematic diagram of the structure of the clamping and gripping components of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the clamping edge and the casing in this application. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping edge and the casing in this application. Figure 2 ;

[0024] Figure 5 This is a schematic diagram of the structure of the curved clamp in this application. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the structure of the present application with an arc-shaped clamp;

[0026] Figure 7 This is a structural schematic diagram of the present application, which includes an arc-shaped clamp and a limiting section;

[0027] Figure 8 It is a schematic diagram of the structure of the sleeve with groove and the arc-shaped clamping plate;

[0028] Figure 9 This is a schematic diagram of the structure where the casing and the arc-shaped clamping plate work together. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] Example 1;

[0031] A sample protection clamp for sample testing includes a housing 2 that can be fitted over a sample 1 and a clamping assembly for clamping the sample inside the housing 2. The housing has a cavity 21 for accommodating the sample. The clamping assembly includes clamping bodies 31 disposed on the inner wall of the cavity. At least one set of clamping bodies is disposed in the cavity and located on opposite inner walls with the cavity axis as the center of symmetry. The cavity is a frustoconical cavity that is wider at the top and narrower at the bottom, and / or a clamping cavity that is wider at the top and narrower at the bottom is formed between the clamping bodies.

[0032] In use, sample 1 is inserted into the housing, with the grinding end exposed, and the inserted part is clamped by the clamping body. Then, the spectrometer uses the relatively large clamp to press the sample against the grinding wheel for grinding. Because the clamp is relatively large compared to the sample, it is easy for the worker to hold, and some gripping parts 9 can be set on the outside of the housing to make the worker hold it more securely. Even if the sample is accidentally dropped, the clamp is not easy to slip out of the hand or hit the hand, making it safer to use. In addition, the housing also has a heat insulation effect, allowing for long-term grinding in one go, which also improves work efficiency.

[0033] The clamping body is mainly used to clamp the sample to ensure its stability during grinding. It also facilitates the movement of the sample after the casing is on, even before grinding, to prevent it from falling off, or to allow for periodic inspection of the ground surface by leaving the grinding wheel during the grinding process.

[0034] Example 2:

[0035] The difference from the above embodiment is that the clamping body consists of multiple clamping ridges 211 distributed on the inner wall of the shell cavity. The clamping ridges can be vertical or horizontal, arranged around the circumference of the inner wall of the shell cavity.

[0036] More preferably, the clamping edge is a strip-shaped edge extending vertically along the inner wall of the shell cavity. The clamping edge is inclined at least towards the inner edge end for pressing the sample, and the distance between the inner edge end and the central axis of the shell cavity gradually increases from top to bottom. The mold cup for sample preparation is an open cup that is narrow at the top and wide at the bottom, so the prepared sample is truncated cone-shaped. During polishing, the narrow end of the sample can be inserted into the shell cavity. Due to the gradual narrowing of the clamping edge and the fact that the sample is also narrow at the top and wide at the bottom when inserted, the sample will be clamped by the clamping edge when inserted into the clamping cavity, thereby fixing the sample relative to the shell. Then, the shell can be held by hand for polishing. In the design, the inner end of the clamping edge can be designed to have the same inclination as the sample, thereby ensuring efficient and stable clamping.

[0037] Example 3:

[0038] The difference from the above embodiment is that the inner edge of the clamping edge is arranged parallel to the wall surface of the shell cavity where the clamping edge is located, and the clamping edge is a triangular edge with a triangular cross-section evenly distributed on the inner wall surface of the shell cavity, or the inner edge of the clamping edge is also provided with several fine edges 2111 parallel to each other.

[0039] Continuous or spaced serrated clamping ridges can be set inside the shell cavity, or clamping ridges can be set, and then several fine serrated ridges can be set on the inner edge end face of the clamping ridges. All of the above structural methods can ensure the clamping of the sample.

[0040] Example 4:

[0041] The difference from the above embodiment is that the top of the casing has a push-out hole 4 that penetrates the casing, and at least part of the outer side of the bottom of the casing has an outwardly extending guard edge 5, the lower end face of the guard edge being flush with or higher than the lower edge of the casing.

[0042] Although the lower end of the sample extends beyond the casing, allowing for direct sample removal after grinding, the sample may be difficult to remove from the casing due to the tight clamping between the clamp and the sample. Therefore, this application also allows for an opening at the top of the casing. By using other tools to elevate the protective frame, the sample can be pushed out using a push rod passing through the push hole, or the push rod can be struck with a hammer to remove the sample from the casing. Additionally, the push hole also has a heat dissipation effect, reducing heat conduction to the casing, ensuring the spectrometer's touch temperature is not excessively high, and improving work efficiency.

[0043] Even better, two opposing and mirror-symmetrical guard edges can be provided on the casing to facilitate sample removal by supporting the casing. These guard edges also act as a barrier between the spectrometer's hand holding the casing and the grinding wheel, enhancing safety. Furthermore, the guard edges serve as a support for the hand, making the grip on the casing more stable and less likely to slip. Finger loops or grooves can also be provided on the guard edges for a more secure grip and to prevent slippage.

[0044] Example 5:

[0045] The difference from the above embodiment is that the clamping body is an arc-shaped clamping plate 212 with the arc opening facing the center of the shell cavity, the shell cavity is a frustum-shaped cavity, the arc of the arc-shaped clamping plate is consistent with the inner wall portion of the corresponding shell cavity, the clamping assembly also includes a lower brake rod 32, an upper brake rod 34, a pull line 33, a braking component and a reset component 331, the pull line is connected between the upper and lower brake rods, at least one of the upper and lower brake rods is provided with a reset component, the braking component is connected to the upper brake rod, and the lower brake rod is connected to the arc-shaped clamping plate.

[0046] When the clamping body is an arc-shaped clamp that can move relative to the cavity, the clamping or releasing of the sample can be controlled by the pull line. The pull line can be made of steel wire, and an outer tube is sleeved on the exposed pull line.

[0047] Example 6:

[0048] The difference from the above embodiment is that the reset component is a reset spring, and the braking component is a pressure plate 35 vertically connected to the upper brake rod; the inner wall surface of the shell cavity is provided with a groove 213. When the clamping body is in an unclamped state, the clamping body is located in the groove, and the inner side facing the center of the shell cavity is flush with or recessed into the groove opening edge. When the clamping body is clamping the sample, the inner side of the clamping body extends beyond the groove opening edge.

[0049] The arc-shaped clamping plate, matching the curvature of the shell cavity, allows the sample to be automatically clamped and released after insertion, facilitating easy assembly and disassembly. During use, the pressure plate drives the brake rod, which in turn pulls the traction line connected to the upper brake rod. This traction line then pulls the lower brake rod into the shell cavity, pressing the clamping body against the sample and clamping it. After grinding, releasing the pressure plate resets the upper brake rod, which, under the action of the return spring, also resets the traction line. The return spring on the lower brake rod simultaneously resets the lower brake rod, causing the clamping body to release the sample. This allows the sample to be detached from the shell cavity. The operation is convenient.

[0050] Example 7:

[0051] The difference from the above embodiment is that a protective cover 8 is provided on the outer surface of the middle part of the outer periphery of the housing for each clamping body, or a protective cover is provided on the outer side of the housing. The lower brake rod is located inside the protective cover and its front end passes through the housing and is connected to the arc-shaped clamping plate. A return spring is sleeved on the part of the lower brake rod located outside the housing. The pull line is connected to the rear end of the lower brake rod.

[0052] The top of the housing is provided with a handle 7, the upper brake rod is located in the handle cavity 71 at the top of the handle and the upper end of the upper brake rod is inserted into the handle and can move up and down relative to the handle, the pressure plate is vertically connected to the lower end of the upper brake rod, a return spring is sleeved on the upper brake rod, and the pull line is connected to the top of the upper brake rod.

[0053] The handle design allows for a more secure grip on the casing, and its cooperation with the protective cover ensures that the transmission components are minimized, guaranteeing long-term, efficient use. The protective cover also serves as a barrier and support between the hand and the grinding wheel, enhancing stability and safety during use. An upper guide sleeve 341 can be installed on the handle to engage with the upper brake lever, and a lower guide sleeve 321 can be installed inside the protective cover to engage with the lower brake lever 32. The lower guide sleeve has a guide groove facing the pull line, allowing the end crossbar 322 connected to the lower brake lever for reciprocating movement. A guide wheel 323 guides the pull line within the protective cover. All components work together to achieve stable and efficient reciprocating motion of the clamping body.

[0054] Example 8:

[0055] The difference from the above embodiment is that the handle is provided with a coil or rod 61 that connects to the top of the upper brake lever. The pull line for connecting each lower brake lever is connected to the edge of the coil. The pressure plate is a strip plate, and several finger grooves are arranged along its length at the bottom of the pressure plate. The handle is provided with a wire limiting ring 42.

[0056] The pull wire is made of steel wire, and a wire sleeve is fitted over the exposed part of the pull wire, which is then limited by a wire-limiting ring. There can be two opposing clamping bodies or multiple clamping bodies evenly distributed within the shell cavity; therefore, there are also two or more corresponding pull wires.

[0057] The clamping body features an arc-shaped clamping plate. This arc shape, consistent with the curvature of the shell cavity, allows the sample to be automatically clamped and released after insertion, facilitating easy assembly and disassembly. During use, the pressure plate drives the brake rod, pulling the traction line connected to the upper brake rod. This traction line then pulls the lower brake rod into the shell cavity, pressing the clamping body against the sample and clamping it. After grinding, releasing the pressure plate resets the upper brake rod, which, under the action of the return spring, also resets the traction line. The return spring on the lower brake rod simultaneously resets the lower brake rod, causing the clamping body to release the sample. This allows the sample to be easily removed from the shell cavity. The operation is convenient, allowing for rapid sample clamping and quick removal after grinding.

[0058] Example 9:

[0059] The difference from the above embodiments lies in that when the clamping body is an arc-shaped clamping plate, the lower end of the arc-shaped clamping plate extends downward beyond the bottom end of the shell to form a guide section 311. A limiting section 312 that folds outward is provided on the guide section. The design of the guide section and the limiting section facilitates the introduction of the sample into the shell cavity, preventing the sample from being pressed against the lower end of the arc-shaped clamping plate after insertion. This improves sample installation efficiency and ensures that the arc-shaped clamping plate can only move towards the center of the shell cavity and not move up and down, thus ensuring that each part is not easily damaged and has better strength and stability. In operation, part of the sample 1 can be inserted into the shell, exposing the grinding end. Then, the spectrometer uses a relatively large clamp to press the sample against the grinding wheel for grinding. Because the clamp is relatively large compared to the sample, effectively lengthening the gripping length, it is easy for the worker to hold. Furthermore, some hand-grip structures can be provided on the outside of the shell to make the worker's grip more stable. Even if the sample accidentally falls off, the clamp is not easy to slip out of your hand or hit your hand, making it safer to use. In addition, the shell design also has a heat insulation effect, which allows for long-term grinding in one go and improves work efficiency.

Claims

1. A sample detection sample grinding protection holder, characterized by: The device comprises a sleeve (2) which can be set on the sample (1) and a clamping assembly which is arranged in the sleeve (2) and used for clamping the sample, the sleeve is provided with a cavity (21) which is used for containing the sample, the clamping assembly comprises clamping bodies (31) which are arranged on the inner wall of the cavity, at least one set of clamping bodies is arranged on the opposite inner walls of the cavity with the axis of the cavity as the center of symmetry, the cavity is a tapered cavity which is wide at the top and narrow at the bottom, and / or a clamping cavity is formed between the clamping bodies which is wide at the top and narrow at the bottom. The clamping body is an arc-shaped clamping plate (212) which is arc-shaped towards the center of the cavity, the cavity is a tapered cavity, the curvature of the arc-shaped clamping plate is consistent with the inner wall of the corresponding cavity, the clamping assembly further comprises a lower stop rod (32), an upper stop rod (34), a pulling wire (33), a stop component and a reset component, the pulling wire is connected between the upper and lower stop rods, at least one of the upper and lower stop rods is provided with the reset component, the stop component is connected to the upper stop rod, and the lower stop rod is connected to the arc-shaped clamping plate. The reset component is a reset spring, and the stop component is a pressing plate (35) which is vertically connected to the upper stop rod. The inner wall of the cavity is provided with an embedded groove (213), when the clamping body is in the unclamped state, the clamping body is located in the embedded groove, and the inner side surface which is towards the center of the cavity is flush with or recessed from the groove edge of the embedded groove, when the clamping body is in the state of clamping the sample, the inner side surface of the clamping body exceeds the groove edge of the embedded groove, and / or the lower end of the arc-shaped clamping plate extends downwards beyond the bottom end of the sleeve to form a guide section (311), and a limiting section (312) which is outwardly folded is arranged on the guide section. A shield (8) is arranged on the outer surface of the middle part of the outer wall of the sleeve corresponding to each clamping body, or a ring of shields is arranged on the outer wall of the sleeve, the lower stop rod is arranged in the shield and the front end of the lower stop rod penetrates through the sleeve and is connected to the arc-shaped clamping plate, the part of the lower stop rod which is located outside the sleeve is provided with a reset spring, and the rear end of the lower stop rod is connected to the pulling wire.

2. The sample grinding protector holder of claim 1, wherein: The clamping body is a plurality of clamping edges (211) which are distributed on the inner wall of the cavity.

3. The sample grinding protector holder of claim 2, wherein: The clamping edge is a strip-shaped edge which is arranged on the inner wall of the cavity and extends upwards and downwards, at least the inner edge end of the clamping edge which is towards the center of the cavity is arranged to be inclined, and the distance between the inner edge end and the center axis of the cavity gradually increases.

4. The sample grinding protector holder of claim 3, wherein: The inner edge end of the clamping edge is arranged to be parallel to the wall surface of the part of the cavity where the clamping edge is located, the cross section of the clamping edge is triangular, or a plurality of fine edges (2111) are further arranged on the inner edge end of the clamping edge.

5. The sample grinding protector holder of any one of claims 1-4, wherein: A pushing hole (4) which penetrates through the sleeve is arranged on the top of the sleeve, and an outwardly extending guard rail (5) is arranged on at least a part of the outer side surface of the bottom of the sleeve, and the lower end surface of the guard rail is flush with or higher than the lower end surface of the sleeve.

6. The sample grinding protector holder of claim 1, wherein: The top of the shell is provided with a handle (7), the upper brake lever is arranged in a handle cavity (71) at the top of the handle, the upper end of the upper brake lever is inserted into the handle and can move up and down relative to the handle, the pressing plate is vertically connected to the lower end of the upper brake lever, a return spring is sleeved on the upper brake lever, and the pulling line is connected to the top of the upper brake lever.

7. The sample grinding protector holder of claim 6, wherein: A wire reel for connecting the top end of the upper brake lever is arranged in the handle, the pulling line for connecting each lower brake lever is connected to the edge of the wire reel, the pressing plate is a strip-shaped plate, a plurality of finger groove are arranged on the bottom of the pressing plate along the length direction, and a limit wire ring (42) is arranged on the handle.

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