CN202974758U - Combination fixture for measuring tensile strength of bolt - Google Patents
Combination fixture for measuring tensile strength of bolt Download PDFInfo
- Publication number
- CN202974758U CN202974758U CN 201220606700 CN201220606700U CN202974758U CN 202974758 U CN202974758 U CN 202974758U CN 201220606700 CN201220606700 CN 201220606700 CN 201220606700 U CN201220606700 U CN 201220606700U CN 202974758 U CN202974758 U CN 202974758U
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- China
- Prior art keywords
- bolt
- cylindrical hole
- tensile strength
- hole
- pull bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to a combination fixture for measuring the tensile strength of a bolt, and the combination fixture comprises a connection body, a first pull rod and a second pull rod, wherein a step cylindrical hole passing through the connection body is formed in the connection body; an internal thread is arranged at the large-diameter end of the step cylindrical hole; an unthreaded hole for a measured bolt to pass out from the step cylindrical hole is formed in the small-diameter end of the step cylindrical hole; a threaded hole is arranged at the axial end of the first pull rod; the threaded hole and the measured bolt passing out of the step cylindrical hole are in threaded fit; an external thread is arranged at the axial end of the second pull rod; and the external thread and the internal thread at the large-diameter end of the step cylindrical hole are in threaded fit. Aiming at the disadvantages in the prior art, the utility model aims to provide the combination fixture for measuring the tensile strength of the bolt; and the combination fixture is capable of detecting the tensile strength of a long bolt and a short bolt and also has the advantages of being simple in structure, easy for processing, low in cost, convenient for clamping, safe and reliable.
Description
Technical field
The utility model relates to a kind of built-up jig, more particularly, relates to a kind of built-up jig that can carry out the measurement bolt tensile strength that tensile strength detects to thru-bolt and lag bolt.
Background technology
In the actual industrial production process, the bolt of producing must carry out the detection of mechanical property, usually tests the special bolt fixture of bolt tensile strength, and complex structure or making are complicated.A kind of employing be the upper and lower fixture that is the U-lag structure, although it is simple in structure, this fixture can only carry out tensile strength to thru-bolt and detect, and can not detect by the clamping lag bolt.
Summary of the invention
The purpose of this utility model is the shortcoming for prior art, a kind of built-up jig of measuring bolt tensile strength is provided, this built-up jig can carry out tensile strength to thru-bolt and lag bolt and detect, and has advantages of that also simple in structure, easy processing, cost are low, convenient mounting and clamping, safe and reliable.
The purpose of this utility model is to realize like this.
A kind of built-up jig of measuring bolt tensile strength, comprise connector, the first pull bar, the second pull bar, described connector is provided with the ladder cylindrical hole that runs through connector, the bigger diameter end of ladder cylindrical hole arranges internal thread, the miner diameter end of ladder cylindrical hole arranges the unthreaded hole that passes for tested bolt from the ladder cylindrical hole, one axial end of described the first pull bar arranges threaded hole, this threaded hole coordinates with the tested bolt thread that passes the ladder cylindrical hole, one axial end of described the second pull bar arranges external thread, the internal thread threaded engagement of this external thread and ladder cylindrical hole bigger diameter end.
Described connector is circular.
the beneficial effects of the utility model are: because tested bolt one end is positioned in the ladder cylindrical hole of connector, the other end is connected with the first pull rod screw, connector is connected with the second pull rod screw by the interior screw thread of establishing, the first pull bar, the second pull bar is connected with Material Testing Machine, bear the pulling force of Material Testing Machine, connector does not directly bear the pulling force of Material Testing Machine, therefore, the thickness of connector can be regulated according to actual conditions, and do not need to use set nut, can realize that bolt is carried out tensile strength to be detected, therefore, the utility model can carry out the tensile strength detection to thru-bolt and lag bolt, the utility model is simple in structure in addition, easily processing, cost is low, convenient mounting and clamping, safe and reliable advantage.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is the first pull bar, and 2 is connector, and 3 is the second pull bar, and 4 is tested bolt, and 5 is the ladder cylindrical hole.
Embodiment
with reference to Fig. 1, a kind of built-up jig of measuring bolt tensile strength, comprise connector 2, the first pull bar 1, the second pull bar 3, in the present embodiment, described connector 2 is circular, connector 2 is provided with the ladder cylindrical hole 5 that runs through connector, the bigger diameter end of ladder cylindrical hole 5 arranges internal thread, the miner diameter end of ladder cylindrical hole 5 arranges the unthreaded hole that passes for tested bolt 4 from the ladder cylindrical hole, described unthreaded hole matches with the diameter of tested bolt screw rod, the head of tested bolt 4 is positioned in ladder cylindrical hole 5, one axial end of described the first pull bar 1 arranges threaded hole, this threaded hole and tested bolt 4 threaded engagement that pass ladder cylindrical hole 5, one axial end of described the second pull bar 3 arranges external thread, the internal thread threaded engagement of this external thread and ladder cylindrical hole 5 bigger diameter ends.Certainly, the size of described ladder cylindrical hole 5, the first pull bar 1, the second pull bar 3, size can make corresponding changes according to size, the size of tested bolt 4, and described tested bolt 4 can be both that thru-bolt can be also lag bolt.
Existing fixture can only carry out tensile strength to thru-bolt and detect, and can not detect by the clamping lag bolt, the utility model can carry out tensile strength to thru-bolt and lag bolt and detect, and the utility model simple in structure, easy processing in addition, cost are low, convenient mounting and clamping, safe and reliable advantage.
The below describes using method of the present utility model.
At first, tested bolt is inserted in connector position, the screw rod that then will pass the tested bolt of ladder cylindrical hole is connected with the first pull rod screw, the internal thread of the bigger diameter end of connector ladder cylindrical hole is connected with the second pull rod screw, at last the first pull bar and the second pull bar is fixedly connected on and carries out bolt tensile strength on Material Testing Machine and measure.
Claims (2)
1. built-up jig of measuring bolt tensile strength, it is characterized in that: comprise connector, the first pull bar, the second pull bar, described connector is provided with the ladder cylindrical hole that runs through connector, the bigger diameter end of ladder cylindrical hole arranges internal thread, the miner diameter end of ladder cylindrical hole arranges the unthreaded hole that passes for tested bolt from the ladder cylindrical hole, one axial end of described the first pull bar arranges threaded hole, this threaded hole coordinates with the tested bolt thread that passes the ladder cylindrical hole, one axial end of described the second pull bar arranges external thread, the internal thread threaded engagement of this external thread and ladder cylindrical hole bigger diameter end.
2. the built-up jig of measurement bolt tensile strength according to claim 1 is characterized in that: described connector is for circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606700 CN202974758U (en) | 2012-11-16 | 2012-11-16 | Combination fixture for measuring tensile strength of bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606700 CN202974758U (en) | 2012-11-16 | 2012-11-16 | Combination fixture for measuring tensile strength of bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974758U true CN202974758U (en) | 2013-06-05 |
Family
ID=48515816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220606700 Expired - Fee Related CN202974758U (en) | 2012-11-16 | 2012-11-16 | Combination fixture for measuring tensile strength of bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974758U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837405A (en) * | 2013-10-31 | 2014-06-04 | 贵州航天新力铸锻有限责任公司 | Universal simple puller for high-temperature and normal-temperature mechanical tensile experiments |
| CN104330313A (en) * | 2014-11-22 | 2015-02-04 | 福建农林大学 | Analysis meter for axial tension load of bolt and operation method of analysis meter for axial tension load of bolt |
| CN106353189A (en) * | 2016-08-30 | 2017-01-25 | 丰业迪睦斯（芜湖）汽车部件有限公司 | Device for testing strength of threaded hole of door limiting device |
-
2012
- 2012-11-16 CN CN 201220606700 patent/CN202974758U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837405A (en) * | 2013-10-31 | 2014-06-04 | 贵州航天新力铸锻有限责任公司 | Universal simple puller for high-temperature and normal-temperature mechanical tensile experiments |
| CN104330313A (en) * | 2014-11-22 | 2015-02-04 | 福建农林大学 | Analysis meter for axial tension load of bolt and operation method of analysis meter for axial tension load of bolt |
| CN106353189A (en) * | 2016-08-30 | 2017-01-25 | 丰业迪睦斯（芜湖）汽车部件有限公司 | Device for testing strength of threaded hole of door limiting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131116 |