CN203572718U - Test mandrel for detecting mechanical properties of connection sleeve - Google Patents
Test mandrel for detecting mechanical properties of connection sleeve Download PDFInfo
- Publication number
- CN203572718U CN203572718U CN201320752976.5U CN201320752976U CN203572718U CN 203572718 U CN203572718 U CN 203572718U CN 201320752976 U CN201320752976 U CN 201320752976U CN 203572718 U CN203572718 U CN 203572718U
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- Prior art keywords
- test
- sleeve
- mandrel
- section
- test plug
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- Withdrawn - After Issue
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Abstract
The utility model discloses a test mandrel for detecting mechanical properties of a connection sleeve. The middle of the mandrel is a cylindrical clamping section; connection sections are arranged at two ends of the mandrel; the diameter of each connection section is smaller than that of the cylindrical clamping section; the tensile load of the mandrel is larger than or equal to 1.2 times the standard tensile load of the connection sleeve. The principle that connection sections with the strength and the harness being lager than those of the connection sleeve are arranged at two ends of the mandrel is used, and the test mandrel is subjected to quenching and tempering processing, so when the test mandrel is used for detecting the mechanical properties of the connection sleeve, threads of the connection sections are not easily damaged, the test demands of the sleeve detecting are met and the repeated use of the test mandrel for multiple times is realized, the test efficiency is improved, and the test cost is reduced. The test mandrel has the advantages of simple structure, simple and convenient operation, high detection efficiency and the like.
Description
Technical field
The utility model belongs to mechanical property of materials detection technique field, is specifically related to a kind of test plug for detection of coupling sleeve mechanical property.
Background technology
Reinforced steel bar straight thread coupling sleeve is the critical component that a kind of reinforcing steel bar machinery connects, and in building iron concrete works, uses in a large number.Two reinforcing bars of end machining screw screw in and tighten from the two ends of sleeve, complete the straight thread mechanical connection of reinforcing bar.The member being combined by two reinforcing bars and coupling sleeve forms reinforced bar straight thread mechanical connecting joint.The mechanical property of joint directly affects the transmission of steel bar stress power in building element, thereby affects the safe reliability of building structure.The pick-up unit of an existing mechanical connection technique of reinforcement rules butt junction mechanical property is made stipulations, and the mechanical property of joint is relevant with factors such as sleeve performance, reinforcement property, the processing of end reinforced screw thread, connections, when quality objection appears in joint, the data of this pick-up unit can not directly judge whether sleeve performance meets regulation requirement.For this reason, develop a kind of test plug and detection method thereof that can direct-detection sleeve mechanical property, for the production of sleeve and examination provide detect and judge according to being very significant.
Utility model content
The purpose of this utility model is to provide a kind of simple in structure, easy and simple to handle, test plug for detection of coupling sleeve mechanical property that can be repeatedly used.
The purpose of this utility model is to realize like this, described plug middle part is cylindrical gripping section, two ends arrange respectively linkage section, and its diameter is less than the diameter of cylindrical gripping section, and the tensile load of described plug is more than or equal to 1.2 times of regulation tensile load of coupling sleeve.
The utility model utilizes two ends that the intensity of linkage section test plug and the principle that hardness is greater than coupling sleeve are set respectively, through quenching and temper, while making to test plug core for detection of the mechanical property of coupling sleeve, the screw thread of linkage section is difficult for damaged, and the external thread at plug two ends all can be used, met the testing requirements that detects sleeve, realized again the repetition and repeatedly use of test plug, improve test efficiency, also reduced experimentation cost simultaneously.The utility model test plug has simple in structure, easy and simple to handle, detection efficiency advantages of higher.
accompanying drawing explanation
Fig. 1 is the utility model one-piece construction and use view;
Wherein: 1-sleeve, 2-linkage section, 3-transition convex shoulder, 4-gripping section.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but never in any form the utility model is limited, any change or the improvement based on the utility model training centre, done, all belong to protection domain of the present utility model.
As shown in Figure 1, the utility model is for detection of the test plug of coupling sleeve mechanical property, and described plug middle part is cylindrical gripping section 4, and two ends arrange respectively linkage section 2, and its diameter is less than the diameter of cylindrical gripping section 4.The tensile load of described plug is more than or equal to 1.2 times of regulation tensile load of coupling sleeve 1.
The linkage section 2 of described plug arranges external thread, matches with screw thread within sleeve 1.
Outside the diameter of the gripping section 4 of described plug and sleeve 1, footpath adapts.
Length and the grip of testing machine length of the gripping section 4 of described plug adapt.
Described plug material is structural alloy steel or alloy tool steel through quenching and temper, and its hardness is Rockwell's hardness 45 ~ 50HRC.
Between the gripping section 4 of described plug and linkage section 2, transition convex shoulder 3 is set.Between described transition convex shoulder 3 and linkage section 2, transition is set and leads circle.
Outside described linkage section 2, thread tolerance grade is 6f, and the length of its thread segment is that 1/2 sleeve 1 length adds 6 ~ 9mm.
the utility model principle of work and the course of work:
The utility model utilizes two ends that the intensity of linkage section test plug and the principle that hardness is greater than coupling sleeve are set respectively, and through quenching and temper, while making to test plug for detection of the mechanical property of coupling sleeve, the screw thread of linkage section is difficult for damaged.Both meet the testing requirements that detects sleeve, realized again the repetition and repeatedly use of test plug, improved test efficiency, also reduced experimentation cost simultaneously.During work, by aforementioned the utility model method, can test the mechanical property of mechanical connection sleeve, overcome the drawback that prior art can not directly detect coupling sleeve, the utlity model has simple in structure, easy and simple to handle, detection efficiency advantages of higher.
Claims (7)
1. the test plug for detection of coupling sleeve mechanical property, it is characterized in that: described plug middle part is cylindrical gripping section (4), two ends arrange respectively linkage section (2), its diameter is less than the diameter of cylindrical gripping section (4), and the tensile load of described plug is more than or equal to 1.2 times of regulation tensile load of coupling sleeve (1).
2. test plug according to claim 1, is characterized in that: the linkage section of described plug (2) arranges external thread, matches with screw thread within sleeve (1).
3. test plug according to claim 1 and 2, is characterized in that: outside the diameter of the gripping section of described plug (4) and sleeve (1), footpath adapts; Length and the grip of testing machine length of the gripping section of described plug (4) adapt.
4. test plug according to claim 1 and 2, is characterized in that: described plug material is structural alloy steel or alloy tool steel through quenching and temper, and its hardness is Rockwell's hardness 45 ~ 50HRC.
5. test plug according to claim 1, is characterized in that: between the gripping section of described plug (4) and linkage section (2), transition convex shoulder (3) is set.
6. test plug according to claim 5, is characterized in that: between described transition convex shoulder (3) and linkage section (2), transition is set and leads circle.
7. test plug according to claim 1 and 2, is characterized in that: outside described linkage section (2), thread tolerance grade is 6f, and the length of its thread segment is that 1/2 sleeve (1) length adds 6 ~ 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752976.5U CN203572718U (en) | 2013-11-26 | 2013-11-26 | Test mandrel for detecting mechanical properties of connection sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752976.5U CN203572718U (en) | 2013-11-26 | 2013-11-26 | Test mandrel for detecting mechanical properties of connection sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572718U true CN203572718U (en) | 2014-04-30 |
Family
ID=50540445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320752976.5U Withdrawn - After Issue CN203572718U (en) | 2013-11-26 | 2013-11-26 | Test mandrel for detecting mechanical properties of connection sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203572718U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604690A (en) * | 2013-11-26 | 2014-02-26 | 武钢集团昆明钢铁股份有限公司 | Testing core rod and detection method for detecting mechanical property of connection sleeve |
| CN110779799A (en) * | 2019-11-20 | 2020-02-11 | 青岛滨海学院 | Thermal management composite material tensile test sample and preparation method thereof |
-
2013
- 2013-11-26 CN CN201320752976.5U patent/CN203572718U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103604690A (en) * | 2013-11-26 | 2014-02-26 | 武钢集团昆明钢铁股份有限公司 | Testing core rod and detection method for detecting mechanical property of connection sleeve |
| CN110779799A (en) * | 2019-11-20 | 2020-02-11 | 青岛滨海学院 | Thermal management composite material tensile test sample and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140430 Effective date of abandoning: 20151202 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |