Sample tube for impact toughness test
By setting a limiting cylinder and threaded connection inside the sample tube, the problem of the gasket getting stuck inside the tube cap due to deformation and difficult to remove was solved, thus achieving convenient removal of the gasket and reliable testing.
Patent Information
- Application Number
- CN202520169935.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-24
AI Technical Summary
The gaskets in the existing impact toughness test specimen tubes are prone to deformation and getting stuck inside the tube cap during the test, making them difficult to disassemble later.
A limiting cylinder is installed inside the sample tube, the bottom end of the gasket overlaps the top end of the limiting cylinder, and a threaded connection cap is installed at the top of the tube. The gasket is located inside the tube and is fixed by the limiting cylinder and the threaded connection.
This allows for easy removal of the gasket after measurement, avoiding the disassembly difficulties caused by deformation and jamming inside the tube cap, thus improving the convenience and reliability of use.
Smart Images
Figure CN223897175U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sample tube technology, and in particular to a sample tube for impact toughness testing. Background Technology
[0002] Impact toughness is a key performance indicator and product grading criterion for superhard abrasives. Superhard abrasives include synthetic diamond; therefore, after manufacturing, the impact toughness value of synthetic diamond needs to be measured. A sample tube is required when testing the impact toughness value of synthetic diamond.
[0003] Existing impact toughness test tubes mainly consist of three structures: a tube body, a gasket, and a cap. During testing, synthetic diamond particles are placed inside the tube body, the gasket is placed at the opening of the tube body, and finally, the cap is threaded onto the tube body to seal the opening and secure the gasket. The outer surface of the tube body usually has a textured surface, which makes the impact toughness tester more stable when clamping and fixing the tube body. For details, please refer to GB / T33144-2016, "Method for Determination of Impact Toughness of Superhard Abrasives." However, existing impact toughness test tubes have the following drawbacks in use:
[0004] The gasket is a consumable part and is easily deformed during impact testing. After the tube cap is fixed to the tube opening, the gasket is located inside the tube cap, and the tube cap has internal threads. Therefore, during the impact toughness test, the gasket may deform and get stuck inside the tube cap, making it difficult to remove the gasket later. Utility Model Content
[0005] The purpose of this utility model is to at least solve one of the technical defects described in the background art.
[0006] Therefore, one objective of this utility model is to provide a sample tube for impact toughness testing, which aims to solve the problem in the prior art where the gasket is located inside the tube cap during use and may get stuck inside the tube cap due to deformation, making it difficult to remove the gasket later.
[0007] To achieve the above objectives, one embodiment of the present invention provides a sample tube for impact toughness testing, comprising a tube body, a limiting cylinder fixedly connected to the inner wall of the tube body, a gasket inserted inside the tube body, the bottom end of the gasket overlapping the top end of the limiting cylinder, a threaded first surface on the top of the tube body, and a tube cap threadedly connected to the tube body through the threaded first surface.
[0008] The beneficial effects are as follows: By setting a limiting cylinder inside the tube, when in use, the gasket is inserted into the tube so that the limiting cylinder supports the gasket. Then, the tube cap is connected to the tube, and the gasket is located inside the tube. Therefore, after the measurement is completed, the tube cap is removed, and the gasket can be easily removed from the tube, which makes it convenient to use.
[0009] Preferably, in any of the above solutions, the height from the top of the limiting cylinder to the opening of the tube is less than the thickness of the gasket.
[0010] The beneficial effect is that after the gasket is inserted into the tube, the top surface of the gasket is higher than the top surface of the tube. Therefore, after the tube cap is connected at the opening of the tube, the tube cap can press and fix the gasket, thus avoiding the problem of the gasket loosening and affecting the test.
[0011] Preferably, as described in any of the above embodiments, the top of the gasket has two grooves.
[0012] The beneficial effects are as follows: Since the gasket structure is small, it is inconvenient to squeeze it into the tube by hand. Therefore, by setting two grooves, it is convenient to use tweezers to insert into the grooves to clamp the gasket and put it into the tube. When removing the gasket, it can be directly picked out with tweezers without having to turn the tube upside down to pour out the gasket. This avoids the problem of the sample inside the tube being poured out due to turning the gasket upside down, thus improving practicality.
[0013] Preferably, the outer surface of the bottom end of the tube is provided with a threaded second thread, and a chamfered third thread is provided at the edge of the bottom end of the tube, and a connecting ring is fixedly connected to the outer surface of the tube.
[0014] The beneficial effects are as follows: By connecting the tube body to the rocker arm of the impact toughness tester through thread two, the original connection method is changed. The threaded connection makes the fixing structure on the rocker arm simpler, and the threaded connection is also reliable, which can avoid the problem of the tube body falling off the rocker arm. In addition, the connecting ring makes it convenient to tighten or loosen the tube body with a wrench.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Figure 2 This is a schematic diagram of the structure of the tube body of this utility model.
[0019] Figure 3 This is a schematic diagram of the structure of the gasket of this utility model.
[0020] Figure 4 This is a schematic diagram of the structure of the pipe cap of this utility model.
[0021] Among them: 1. Pipe body, 101. Chamfer 1, 11. Limiting cylinder, 12. Thread 1, 13. Thread 2, 14. Chamfer 3, 15. Connecting ring, 2. Gasket, 21. Groove, 22. Chamfer 2, 3. Pipe cap, 31. Anti-slip texture. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] This invention provides a sample tube for impact toughness testing.
[0025] Example 1:
[0026] like Figure 1-4 As shown, it includes a tube body 1, with a limiting cylinder 11 fixedly connected to the inner wall of the tube body 1. A gasket 2 is inserted into the inside of the tube body 1. A chamfer 22 is provided at the bottom edge of the gasket 2 to facilitate the insertion of the gasket 2 into the tube body 1. The bottom end of the gasket 2 overlaps the top end of the limiting cylinder 11, which provides limiting support for the gasket 2. The height from the top end of the limiting cylinder 11 to the opening of the tube body 1 is less than the thickness of the gasket 2. A thread 12 is provided on the outer surface of the top of the tube body 1. A tube cap 3 is threaded to the tube body 1 through the thread 12. A chamfer 101 is provided at the top end of the tube body 1 to facilitate the connection between the tube cap 3 and the tube body 1. An anti-slip texture 31 is provided on the outer surface of the tube cap 3 to increase friction and facilitate hand-tightening of the tube cap 3. The inner top of the tube cap 3 presses against the top of the gasket 2, thereby pressing and fixing the gasket 2 to prevent the gasket 2 from loosening during the measurement process.
[0027] Preferred, such as Figure 3 As shown, the gasket 2 is small and it is inconvenient to squeeze it into the tube 1 by hand. Therefore, two grooves 21 are opened on the top of the gasket 2 to facilitate the use of tweezers to insert into the grooves 21 to clamp and place the gasket 2, thus making it easier to insert the gasket 2 into the tube 1.
[0028] Example 2:
[0029] like Figure 1-2 As shown, based on Embodiment 1, the outer surface of the bottom end of the tube body 1 is provided with thread 2 13. A connector connected to thread 2 13 is provided on the rocker arm of the impact toughness tester. The tube body 1 is fixed on the rocker arm by the threaded connection. The fixing structure on the rocker arm is simpler, and the threaded connection is more stable and reliable. A chamfer 3 14 is provided at the edge of the bottom end of the tube body 1 to facilitate the connection between the tube body 1 and the connector on the rocker arm of the impact toughness tester. A connecting ring 15 is fixedly connected to the outer surface of the tube body 1. The tube body 1 can be tightened or loosened by rotating the connecting ring 15 with a wrench.
[0030] The working principle of this utility model is as follows: When in use, place the artificial diamond sample and steel ball into the tube body 1, then use tweezers to insert into the groove 21, clamp the gasket 2 into the tube body 1, tighten the tube cap 3 to fix it at the opening of the tube body 1, and finally connect the tube body 1 to the rocker arm of the impact toughness tester through the thread 13. After the impact toughness tester stops, use a wrench on the surface of the connecting ring 15 to loosen the tube body 1 and then remove the sample tube. Then loosen and remove the tube cap 3, and take out the gasket 2 for testing.
Claims
1. A sample tube for impact toughness testing, comprising a tube body (1), characterized in that, The inner wall of the tube (1) is fixedly connected to a limiting cylinder (11), a gasket (2) is inserted inside the tube (1), the bottom end of the gasket (2) overlaps the top end of the limiting cylinder (11), a thread (12) is provided on the outer surface of the top of the tube (1), and a tube cap (3) is threadedly connected to the tube (1) through the thread (12).
2. The specimen tube for impact toughness testing according to claim 1, characterized in that, The height from the top of the limiting cylinder (11) to the opening of the tube body (1) is less than the thickness of the gasket (2).
3. The specimen tube for impact toughness testing according to claim 1, characterized in that, The top of the tube (1) is provided with a chamfer one (101), and the bottom edge of the gasket (2) is provided with a chamfer two (22).
4. The specimen tube for impact toughness testing according to claim 1, characterized in that, The outer surface of the tube cap (3) is provided with anti-slip texture (31).
5. The specimen tube for impact toughness testing according to claim 1, characterized in that, The top of the gasket (2) has two grooves (21).
6. The specimen tube for impact toughness testing according to claim 1, characterized in that, The outer surface of the bottom end of the tube (1) is provided with thread two (13), and chamfer three (14) is provided at the edge of the bottom end of the tube (1).
7. The specimen tube for impact toughness testing according to claim 6, characterized in that, A connecting ring (15) is fixedly connected to the outer surface of the tube (1).