A high-pressure cylinder liner performance test sampling sawing clamp

Abstract

The utility model discloses a kind of high-pressure cylinder inner container performance test sampling saw cutting clamps, comprising: clamp main body, it includes horizontally arranged clamp base and two clamp supports vertically fixed on the clamp base;Profiling clamp plate is provided with two and is respectively installed on the two clamp supports, and the clamping surface of the profiling clamp plate has the profiling positioning groove matched with the outer contour of cylinder inner container sampling block;Tighten mechanism, drive at least one profiling clamp plate relative to the clamp support moves, so that two profiling clamp plates are clamped to cylinder inner container sampling block. The saw cutting clamp can realize the stable clamping of cylinder inner container sampling block, can ensure that stress is uniform when clamping, effectively reduce sample deformation risk, improve sampling accuracy, and structure is stable, can provide reliable support for saw cutting operation, improve sampling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure gas cylinder technology, and in particular to a high-pressure gas cylinder liner performance testing and sampling sawing fixture. Background Technology

[0002] Aluminum liners for high-pressure gas cylinders in vehicles are key components of new energy vehicles (such as hydrogen fuel cell vehicles and CNG vehicles). They are primarily used to store high-pressure gases (such as hydrogen and natural gas) and are crucial for ensuring the normal operation of the vehicle. In recent years, with the rapid development of the new energy vehicle industry, the market demand for aluminum liners for high-pressure gas cylinders has been continuously increasing, and the requirements for their performance and quality have also been rising.

[0003] In the production process of aluminum liners for high-pressure gas cylinders, strict specifications govern every step from design to manufacturing. After solution aging heat treatment, the properties of the aluminum liner must be precisely measured to ensure compliance with production standards. Performance measurements include mechanical property testing, microstructure inspection, and chemical composition retesting. Among these, mechanical property testing is the most crucial, requiring the use of standard tensile specimens cut and processed from specific locations within the aluminum liner (typically representative, such as the longitudinal and transverse sections of the cylinder).

[0004] During sampling, the sample must not deform, and the sampling time should be as short as possible. Because the aluminum inner liner of high-pressure gas cylinders has a large diameter and thin wall, hot processing sampling methods such as wire cutting or laser cutting can cause the sample to bend and deform, leading to inaccurate test results. Therefore, cold processing processes such as sawing or milling are typically used to obtain the sample. However, due to the large diameter of the gas cylinder, this requires the use of a high-tonnage sampling machine. This necessitates the design of a fixture specifically for a gas cylinder inner liner sawing machine to ensure the accuracy and safety of the sampling process. This fixture needs to possess high precision and good stability to meet the requirements of the sampling process.

[0005] Currently, there is a lack of specialized fixtures for sampling aluminum liners from high-pressure gas cylinders on the market. Existing fixtures are mostly general-purpose and difficult to adapt to the unique structure and sampling requirements of aluminum liners in high-pressure gas cylinders. Existing fixtures struggle to achieve precise clamping and stable fixation, leading to sample loosening or displacement during sampling, affecting cutting accuracy. Furthermore, existing sampling fixtures lack effective anti-deformation designs, easily applying uneven forces to the sample during clamping, causing bending or twisting and affecting the accuracy of test results. Moreover, existing sampling fixtures are cumbersome to operate during clamping and sampling, unable to quickly position and fix the sample, resulting in low sampling efficiency and failing to meet the rapid sampling needs of production lines. Utility Model Content

[0006] To address the aforementioned technical problems, the purpose of this utility model is to provide a high-pressure gas cylinder liner performance testing sampling sawing fixture. This sawing fixture can stably clamp the high-pressure gas cylinder liner, ensuring uniform force during clamping, effectively reducing the risk of sample deformation, improving sampling accuracy, and its robust structure provides reliable support for sawing sampling operations, thereby enhancing sampling efficiency.

[0007] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0008] A high-pressure gas cylinder liner performance testing sampling sawing fixture, comprising:

[0009] The fixture body includes a horizontally arranged fixture base and two fixture supports vertically fixed on the fixture base;

[0010] The contour clamp is provided in two pieces and is respectively installed on the two clamp supports. The clamping surface of the contour clamp has a contour positioning groove that matches the outer contour of the gas cylinder inner liner sampling block.

[0011] The clamping mechanism drives at least one contoured clamping plate to move relative to the clamp support, so that the two contoured clamping plates clamp the sampling block inside the gas cylinder.

[0012] Furthermore, the contour positioning groove includes a wide bottle body positioning groove for adapting to the round or wide bottle body of the gas cylinder inner liner sampling block, and a narrow bottle body positioning groove for adapting to the narrow bottle body of the gas cylinder inner liner sampling block.

[0013] Furthermore, the conforming clamp is also provided with an upward-opening saw blade clearance groove.

[0014] Furthermore, the saw blade clearance groove extends in a direction perpendicular to the contour positioning groove, and the saw blade clearance groove extends below the contour positioning groove.

[0015] Furthermore, the contour positioning groove has a disconnected structure, and the gas cylinder inner liner sampling block is clamped behind two contour clamps, with part of it protruding outside the contour clamps.

[0016] Furthermore, the clamping mechanism includes a driving component, a clamping base plate, and a guide rod. The driving component is connected to the clamp support, and the end of the driving component is connected to the clamping base plate. The conforming clamp is mounted on the clamping base plate, and one end of the guide rod is fixedly connected to the clamping base plate and passes through the clamp support. The driving component can drive the conforming clamp to move under the guidance of the guide rod.

[0017] Furthermore, the driving component is a lead screw structure, a cylinder, or a hydraulic cylinder.

[0018] Furthermore, the fixture base is provided with fixing holes for fixed installation with the sawing device.

[0019] The technical effects of this utility model are as follows:

[0020] This utility model's sampling sawing fixture can be used in conjunction with a sawing device. It achieves stable clamping of the gas cylinder inner liner sampling block through the ingenious cooperation of two contoured clamping plates with contoured positioning grooves and a clamping mechanism. The contoured positioning grooves of the clamping plates match the outer contour of the gas cylinder inner liner, ensuring uniform force during clamping, effectively reducing the risk of sample deformation and improving sampling accuracy. The clamping mechanism design makes the fixture easy to operate, allowing for quick clamping and positioning of the gas cylinder inner liner sampling block, greatly improving sampling efficiency. Furthermore, the fixture's robust structure provides reliable support for sawing operations, significantly optimizing the sampling process and effect for high-pressure gas cylinder inner liner performance testing, and reducing sampling costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the high-pressure gas cylinder liner performance testing sampling sawing fixture of this utility model.

[0022] Figure 2 This is a schematic diagram of the profile clamping plate in the high-pressure gas cylinder liner performance testing sampling sawing fixture of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the high-pressure gas cylinder liner performance testing sampling sawing fixture and the gas cylinder liner sampling block clamping and cooperating.

[0024] Figure 4 This is a schematic diagram of the structure of the high-pressure gas cylinder liner performance testing sampling sawing fixture and the moving platform of the sawing device.

[0025] Figure 5 This is a schematic diagram illustrating the sampling process of the high-pressure gas cylinder liner performance testing sampling sawing fixture of this utility model.

[0026] In the diagram, 1: clamp body, 11: clamp base, 12: clamp support, 121: main support plate, 122: reinforcing plate, 123: fixing hole; 2: contour clamping plate, 21: contour positioning groove, 211: wide bottle body positioning groove, 212: narrow bottle body positioning groove, 22: saw blade clearance groove; 3: clamping mechanism, 31: driving component, 32: clamping base plate, 33: guide rod; 4: gas cylinder inner liner sampling block; 5: saw blade; 6: moving platform. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0028] like Figures 1 to 5 A preferred embodiment of a high-pressure gas cylinder liner performance testing sampling sawing fixture shown includes:

[0029] The fixture body 1 includes a horizontally arranged fixture base 11 and two fixture supports 12 vertically fixed on the fixture base 11. The fixture supports 12 include a main support plate 121 and a reinforcing plate 122.

[0030] The contour clamp 2 is provided in two pieces and is respectively installed on two clamp supports 12. The clamping surface of the contour clamp 2 has a contour positioning groove 21 that matches the outer contour (outer contour wall end face) of the gas cylinder inner liner sampling block 4.

[0031] The clamping mechanism 3 drives the contour clamp 2 to move relative to the clamp support 12 so that the two contour clamps 2 clamp the gas cylinder inner liner sampling block 4. In this preferred embodiment, one contour clamp 2 is movable and the other contour clamp 2 is fixed, that is, of the two contour clamps 2, only one contour clamp 2 is movably connected to the clamp support 12 through the clamping mechanism 3.

[0032] In this utility model, the contour clamp 2 can better fit tightly with the gas cylinder inner liner sampling block 4 through the contour positioning groove 21, which can effectively fix the gas cylinder inner liner sampling block and prevent it from slipping. It can also evenly distribute the clamping force during the clamping process, avoid sample deformation due to uneven force, and ensure the shape integrity and dimensional accuracy of the gas cylinder inner liner sampling block during the sawing process.

[0033] The contour positioning groove 21 includes a wide bottle body positioning groove 211 for adapting to the round or wide bottle body of the gas cylinder inner liner sampling block, and a narrow bottle body positioning groove 212 for adapting to the narrow bottle body of the gas cylinder inner liner sampling block. The design of the wide bottle body positioning groove 211 and the narrow bottle body positioning groove 212 allows the contour positioning groove 21 to adapt to the round, wide, and narrow bottle bodies of the gas cylinder inner liner sampling block, making the clamp applicable to bottle bodies of different sizes, facilitating multi-stage and multi-specification clamping and sawing, and better meeting the needs of rapid sampling.

[0034] Furthermore, the contour positioning groove 21 has a discontinuous structure. After the gas cylinder inner liner sampling block 4 is clamped by the two contour clamping plates 2, part of it protrudes outside the contour clamping plates 2. This design provides space for sawing and sampling, making it easier to take strip samples along the direction of the cylinder body.

[0035] The contour clamp 2 is also provided with an upward-opening saw blade clearance groove 22. Furthermore, the saw blade clearance groove 22 extends in a direction perpendicular to the contour positioning groove 21, and extends below the contour positioning groove 21. The saw blade clearance groove 22 provides ample sawing space for the saw blade 5, allowing it to perform sawing operations smoothly without frequent adjustments to the equipment or clamps, ensuring a smooth sawing process and effectively protecting the saw blade, extending its service life. In this preferred embodiment, the saw blade clearance groove 22 is located in the middle of the contour clamp 2. The contour positioning groove 21, with its disconnected structure, is symmetrical with respect to the saw blade clearance groove 22.

[0036] The clamping mechanism 3 includes a driving component 31, a clamping base plate 32, and a guide rod 33. The driving component 31 is connected to the clamp support 12, and its end is connected to the clamping base plate 32. The contour clamping plate 2 is mounted on the clamping base plate 32. One end of the guide rod 33 is fixedly connected to the clamping base plate 32, and the other end of the guide rod 33 passes through the clamp support 12. The driving component 31 can drive the contour clamping plate 2 to move under the guidance of the guide rod 33 to achieve clamping. The driving component 31 can be a lead screw structure, a cylinder, or a hydraulic cylinder. These driving components 31 can provide sufficient driving force in a short time to quickly realize the movement and clamping of the contour clamping plate 2, shorten the sampling preparation time, and thus improve the overall sampling efficiency. In this preferred embodiment, the driving component is a lead screw structure, and its end is also provided with an operating handle.

[0037] The clamp support 12 is provided with a fixing hole 123 for fixed installation with the sawing device, so that the sampling sawing clamp can be used in conjunction with the sawing device. Specifically, the sampling sawing clamp is fixedly installed on the moving platform 6 of the sawing device through the fixing hole 123 on the clamp support 12, and the moving platform 6 can drive the sampling sawing clamp to move below the saw blade 5.

[0038] like Figure 5 As shown, taking a 450L hydrogen cylinder aluminum inner liner as an example, this illustrates the usage method of this sampling sawing fixture in conjunction with the sawing device for sampling:

[0039] 1) Cross-cut: Use a powerful rotary tube saw to make two cuts in the middle of the gas cylinder liner along the cross-section, and take a 280mm long cylindrical ring of the cylinder body (gas cylinder liner sampling block 4).

[0040] 2) Install the clamp: Fix the sampling sawing clamp of this utility model onto the high-powered rotary tube sawing device;

[0041] 3) Clamping: Place the cylindrical ring of the bottle body into the contour positioning groove 21. The outline of the cylindrical ring of the bottle body matches the wide bottle positioning groove 211. Turn the drive component 31 (screw structure component) and use the two contour clamping plates 2 to clamp the cylindrical ring of the bottle body.

[0042] 4) The moving platform 6 of the sawing device moves the sampling sawing fixture below the saw blade 5 and makes the first longitudinal sawing cut;

[0043] 5) Retract the contour clamp 2 using the drive component 31, rotate the cylindrical ring of the bottle body by 50 degrees, operate the drive component 31 again, and use the two contour clamps 2 to clamp it.

[0044] 6) Make a second longitudinal saw cut to obtain a 200mm wide arc-shaped bottle body template;

[0045] 7) The drive unit 31 moves again, using the narrow bottle body positioning grooves 212 of the two contour clamping plates 2 to clamp the 200mm wide bottle body strip.

[0046] 8) Make a third longitudinal saw cut to obtain two 100mm wide bottle body strips;

[0047] 9) Retract the contour clamp 2 by driving component 31, readjust the 100mm wide bottle body template and place it between the narrow bottle body positioning slots 212 of the two contour clamps 2, and then operate driving component 31 to clamp the bottle body template with the two contour clamps 2.

[0048] 10) Make the fourth and fifth longitudinal saw cuts to obtain four 50mm wide bottle body strips. Sampling is complete.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sampling sawing fixture for testing the performance of a high-pressure gas cylinder liner, characterized in that, include: The fixture body includes a horizontally arranged fixture base and two fixture supports vertically fixed on the fixture base; The contour clamp is provided in two pieces and is respectively installed on the two clamp supports. The clamping surface of the contour clamp has a contour positioning groove that matches the outer contour of the gas cylinder inner liner sampling block. The clamping mechanism drives at least one contoured clamping plate to move relative to the clamp support, so that the two contoured clamping plates clamp the sampling block inside the gas cylinder.

2. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 1, characterized in that, The contour positioning groove includes a wide bottle body positioning groove for adapting to the round or wide bottle body of the gas cylinder inner liner sampling block, and a narrow bottle body positioning groove for adapting to the narrow bottle body of the gas cylinder inner liner sampling block.

3. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 2, characterized in that, The conformal clamp is also provided with an upward-opening saw blade clearance groove.

4. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 3, characterized in that, The saw blade clearance groove extends in a direction perpendicular to the contour positioning groove, and the saw blade clearance groove extends to the bottom of the contour positioning groove.

5. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 1, characterized in that, The contour positioning groove has a disconnected structure. The gas cylinder inner liner sampling block is clamped behind two contour clamps, with part of it protruding outside the contour clamps.

6. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 1, characterized in that, The clamping mechanism includes a driving component, a clamping base plate, and a guide rod. The driving component is connected to the clamp support, and the end of the driving component is connected to the clamping base plate. The conforming clamp is mounted on the clamping base plate, and one end of the guide rod is fixedly connected to the clamping base plate and passes through the clamp support. The driving component can drive the conforming clamp to move under the guidance of the guide rod.

7. A high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 6, characterized in that, The driving component is a lead screw structure, a cylinder, or a hydraulic cylinder.

8. The high-pressure gas cylinder liner performance testing sampling sawing fixture according to claim 1, characterized in that, The fixture base is provided with fixing holes for fixed installation with the sawing device.

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