CN104833572A - Bolt tensile test tool and tensile test device using same - Google Patents
Bolt tensile test tool and tensile test device using same Download PDFInfo
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- CN104833572A CN104833572A CN201510261823.4A CN201510261823A CN104833572A CN 104833572 A CN104833572 A CN 104833572A CN 201510261823 A CN201510261823 A CN 201510261823A CN 104833572 A CN104833572 A CN 104833572A
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Abstract
The invention relates to a bolt tensile test tool and a tensile test device using the same. The bolt tensile test tool comprises a head connection piece and a screw connection piece which are arranged up and down in a use process, wherein the head connection piece is provided with a supporting plane for being in surface contact and in positioning and supporting match with the head of a corresponding bolt; the extending direction of the supporting plane is vertical to the up-down direction; and the screw connection piece comprises a bolt connection structure which is connected with a screw of the bolt and a ball hinging structure which is connected with a pulling-down head of a corresponding tensile machine. The bolt tensile test tool and the tensile test device using the bolt tensile test tool, which can guarantee that the axial direction of the screw is the same as the direction of the tensile force of the tensile machine, are provided by the invention.
Description
Technical field
The present invention relates to a kind of bolt tension test tool and test the tensile test apparatus of this test tool.
Background technology
Bolt, as a kind of conventional securing member, comprises screw rod and is arranged at the head of screw rod end.The tensile strength of bolt detects the important indicator of bolt performance, along with the develop rapidly of aerospace field, the switching performance of bolt between the matrix of aerospace field requires more and more higher, and the stretching test method of bolt and frock are also constantly upgrading and improving.Existing bolt tension test tool comprises head connector and bolt jointing part, head connector is used during use, the head of bolt and screw rod are connected to the upper of puller system by bolt jointing part respectively, on lower pull head, then by puller system, tension test is carried out to bolt, puller system exports the pulling force on straight up and down direction, but due to mismachining tolerance and the alignment error of tension test frock, and can not automatically adjust when connecting, easily cause the direction of pull of the axis of bolt and puller system inconsistent, this just easily causes eccentric load, produce longitudinal component, the axial force of bolt reduces, larger on test findings impact.
Summary of the invention
The object of the present invention is to provide a kind of bolt tension test tool that screw axial is consistent with puller system direction of pull that can ensure; The present invention also aims to provide a kind of tensile test apparatus using this bolt tension test tool.
In order to solve the problem, in the present invention, the technical scheme of bolt tension test tool is:
Bolt tension test tool, head connector setting up and down and bolt jointing part when comprising use, head connector has the supporting plane that the lower end plane-plane contact positioning supports for the head with respective bolt coordinates, the bearing of trend of supporting plane perpendicular to above-below direction, bolt jointing part comprise for the screw connecting structure that the screw rod of described bolt is connected and the ball-joint structure for being connected with the lower pull head of corresponding puller system.
Described head connector is formed by being used for padding the support pad be located between the upper pull head of puller system and described head when using, and described supporting plane is made up of the upper surface of described support pad.
Described ball-joint structure comprises the top connection being provided with outer bulb and the lower sub being provided with interior ball groove, outer bulb rotates and is assemblied in interior ball groove, the upper end of outer bulb is provided with connecting link, the diameter of connecting link is less than the diameter of described outer bulb, lower sub offers one end extends to described interior ball groove, the other end extends to the top connection mounting hole that the described top connection of confession on the outer peripheral face of described lower sub horizontally passes through.
Described screw connecting structure comprises the internal thread be opened on described connecting link.
Described ball-joint structure also comprise spinning in described lower sub for mounting the male connection on lower pull head.
In the present invention, the technical scheme of tensile test apparatus is:
Tensile test apparatus, comprise upper and lower pull head and bolt tension test tool, head connector setting up and down and bolt jointing part when bolt tension test tool comprises use, head connector has the supporting plane that the lower end plane-plane contact positioning supports for the head with respective bolt coordinates, the bearing of trend of supporting plane perpendicular to above-below direction, bolt jointing part comprise for the screw connecting structure that the screw rod of described bolt is connected and the ball-joint structure for being connected with the lower pull head of corresponding puller system.
The support pad that described head connector is located between upper pull head and described head by pad when using is formed, and described supporting plane is made up of the upper surface of described support pad.
Described ball-joint structure comprises the top connection being provided with outer bulb and the lower sub being provided with interior ball groove, outer bulb rotates and is assemblied in interior ball groove, the upper end of outer bulb is provided with connecting link, the diameter of connecting link is less than the diameter of described outer bulb, lower sub offers one end extends to described interior ball groove, the other end extends to the top connection mounting hole that the described top connection of confession on the outer peripheral face of described lower sub horizontally passes through.
Described screw connecting structure comprises the internal thread be opened on described connecting link.
Described ball-joint structure also comprise spinning in described lower sub for mounting the male connection on lower pull head.
Beneficial effect of the present invention is: during use, the head of bolt and screw rod are connected to the upper of puller system respectively by head connector and bolt jointing part, on lower pull head, the supporting plane of head connector coordinates with the lower end plane-plane contact positioning supports of head, to ensure that the axis of bolt extends along the vertical direction, even and if cause bolt jointing part to occur certain deviation due to the mismachining tolerance of bolt jointing part, under the positioning action of supporting plane, ball-joint structure meeting self-adaptative adjustment, and bolt lower end can not be skewed, such bolt is just held in up and down vertically attitude always, the axis of bolt is consistent with the direction of pull of puller system, ensure that test findings.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of tensile test apparatus in the present invention;
Fig. 2 is the structural representation of lower sub in Fig. 1;
Fig. 3 be in Fig. 2 top connection mounting hole and interior ball groove coordinate schematic diagram;
Fig. 4 is that the B-B of Fig. 2 is to cut-open view;
Fig. 5 is the structural representation of the top connection in Fig. 1.
Embodiment
The embodiment of tensile test apparatus is as shown in Fig. 1 ~ 5: comprise upper pull head 3, lower pull head 9 and bolt tension test tool, on, lower pull head is tube-in-tube structure, head connector setting up and down and bolt jointing part when bolt tension test tool comprises use, the support pad 2 that head connector is located between the head 1 of upper pull head and respective bolt by pad when using is formed, support pad lower end is provided with the positioning boss with upper pull head location fit, the bearing of trend of the upper surface of support pad is perpendicular to above-below direction, the upper surface of support pad is configured for the supporting plane coordinated with the lower end plane-plane contact positioning supports of head.Bolt jointing part comprises screw connecting structure for being connected with the screw rod 4 of bolt and the ball-joint structure for being connected with lower pull head, ball-joint structure comprises the top connection 5 being provided with outer bulb 7 and the lower sub 6 being provided with interior ball groove 14, outer bulb rotates and is assemblied in interior ball groove 14, the lower end of interior ball groove 14 is provided with the yielding space 10 for getting out of the way top connection, the upper end of outer bulb is provided with connecting link, the diameter of connecting link is less than the diameter of outer bulb, screw connecting structure comprises the internal thread be opened on connecting link, lower sub offers one end and extend to interior ball groove, the other end extends to the top connection mounting hole horizontally passed through for top connection on the outer peripheral face of lower sub, top connection mounting hole comprises the connecting link mounting hole section 12 of aperture and connecting link bar footpath adaptation and the outer bulb mounting hole section 13 of aperture and outer bulb diameter adaptation, ball-joint structure also comprises the male connection 8 that mount in lower pull head on of spinning in lower sub.Figure middle term 11 represents lower sub screw thread.
During use, by support pad, the head of bolt is connected with upper pull head, the upper surface bearing of trend of support pad is perpendicular to above-below direction, therefore by the positioning supports of support pad, bolt is held in vertical state, top connection is installed in lower sub by top connection mounting hole, internal thread on connecting link is connected with screw flight, go up like this, lower pull head can apply pulling force by bolt tension test tool, even if there is error in making and the installation of lower pull head, lower pull head can rotate relative to upper pull head generation self-adaptation and make up this error, and because bolt is always by support pad supporting and location, so lower pull head is in self-adaptative adjustment process, the axis of bolt also can be held in up and down vertically state always, the axis of bolt is consistent with the direction of pull of puller system, therefore the test findings of tension test can be ensured.
In other embodiment of this tensile test apparatus: the support rim in support pad also can not be established; Certain head connector may not be gasket construction, such as is the cushion block structure that thickness is thicker; Head connector can also be first body formed with pull-up; Lower sub also can with drop-down first body formed; Top connection mounting hole also can not be established, and now upper and lower joint can be non-disconnectable spherical hinge structure.
The embodiment of bolt tension test tool is as shown in 1 ~ 5: the concrete structure of bolt tension test tool is identical with the bolt tension test tool described in above-mentioned each tensile test apparatus embodiment, is not described in detail in this.
Claims (10)
1. bolt tension test tool, head connector setting up and down and bolt jointing part when comprising use, it is characterized in that: head connector has the supporting plane that the lower end plane-plane contact positioning supports for the head with respective bolt coordinates, the bearing of trend of supporting plane perpendicular to above-below direction, bolt jointing part comprise for the screw connecting structure that the screw rod of described bolt is connected and the ball-joint structure for being connected with the lower pull head of corresponding puller system.
2. bolt tension test tool according to claim 1, it is characterized in that: described head connector is formed by being used for padding the support pad be located between the upper pull head of puller system and described head when using, and described supporting plane is made up of the upper surface of described support pad.
3. bolt tension test tool according to claim 1 and 2, it is characterized in that: described ball-joint structure comprises the top connection being provided with outer bulb and the lower sub being provided with interior ball groove, outer bulb rotates and is assemblied in interior ball groove, the upper end of outer bulb is provided with connecting link, the diameter of connecting link is less than the diameter of described outer bulb, lower sub offers one end extends to described interior ball groove, the other end extends to the top connection mounting hole that the described top connection of confession on the outer peripheral face of described lower sub horizontally passes through.
4. bolt tension test tool according to claim 3, is characterized in that: described screw connecting structure comprises the internal thread be opened on described connecting link.
5. bolt tension test tool according to claim 3, is characterized in that: described ball-joint structure also comprise spinning in described lower sub for mounting the male connection on lower pull head.
6. tensile test apparatus, comprise upper and lower pull head and bolt tension test tool, head connector setting up and down and bolt jointing part when bolt tension test tool comprises use, it is characterized in that: head connector has the supporting plane that the lower end plane-plane contact positioning supports for the head with respective bolt coordinates, the bearing of trend of supporting plane perpendicular to above-below direction, bolt jointing part comprise for the screw connecting structure that the screw rod of described bolt is connected and the ball-joint structure for being connected with the lower pull head of corresponding puller system.
7. tensile test apparatus according to claim 6, is characterized in that: the support pad that described head connector is located between upper pull head and described head by pad when using is formed, and described supporting plane is made up of the upper surface of described support pad.
8. the tensile test apparatus according to claim 6 or 7, it is characterized in that: described ball-joint structure comprises the top connection being provided with outer bulb and the lower sub being provided with interior ball groove, outer bulb rotates and is assemblied in interior ball groove, the upper end of outer bulb is provided with connecting link, the diameter of connecting link is less than the diameter of described outer bulb, lower sub offers one end extends to described interior ball groove, the other end extends to the top connection mounting hole that the described top connection of confession on the outer peripheral face of described lower sub horizontally passes through.
9. tensile test apparatus according to claim 8, is characterized in that: described screw connecting structure comprises the internal thread be opened on described connecting link.
10. tensile test apparatus according to claim 8, is characterized in that: described ball-joint structure also comprise spinning in described lower sub for mounting the male connection on lower pull head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261823.4A CN104833572B (en) | 2015-05-21 | 2015-05-21 | Bolt tension test tool and the tensile test apparatus using the test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261823.4A CN104833572B (en) | 2015-05-21 | 2015-05-21 | Bolt tension test tool and the tensile test apparatus using the test tool |
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| Publication Number | Publication Date |
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| CN104833572A true CN104833572A (en) | 2015-08-12 |
| CN104833572B CN104833572B (en) | 2017-11-10 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222944A (en) * | 2015-09-18 | 2016-01-06 | 河南航天精工制造有限公司 | The test method of locking torque test and high-temperature test device |
| CN105424480A (en) * | 2015-12-16 | 2016-03-23 | 北京建筑材料检验研究院有限公司 | Dovetail-shaped anchoring connecting part testing device and method |
| CN105486574A (en) * | 2015-11-23 | 2016-04-13 | 中国南方航空工业(集团)有限公司 | High-low-temperature-cycling fatigue test tool and method for turbine bolt |
| CN108225916A (en) * | 2018-01-16 | 2018-06-29 | 南昌航空大学 | A kind of welding bolt cold crack experimental rig |
| CN109916709A (en) * | 2019-03-27 | 2019-06-21 | 江苏神马电力股份有限公司 | A kind of test joint and test tool |
| CN110849746A (en) * | 2019-12-07 | 2020-02-28 | 湖南圣人防水材料有限公司 | Ductility detection device is used in production of anti-fracture snow melt type waterproof material |
| CN110926940A (en) * | 2018-09-20 | 2020-03-27 | 上海汇众汽车制造有限公司 | Method for testing ultimate contact strength of material surface |
| CN113945367A (en) * | 2020-06-30 | 2022-01-18 | 三赢科技（深圳）有限公司 | Tensile test tool and tensile test machine |
| CN113984513A (en) * | 2021-10-27 | 2022-01-28 | 北京航空航天大学 | Near-far double-end aligning device |
| CN115963007A (en) * | 2023-02-10 | 2023-04-14 | 西南交通大学 | Force measuring bolt calibration test device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105222944A (en) * | 2015-09-18 | 2016-01-06 | 河南航天精工制造有限公司 | The test method of locking torque test and high-temperature test device |
| CN105486574A (en) * | 2015-11-23 | 2016-04-13 | 中国南方航空工业(集团)有限公司 | High-low-temperature-cycling fatigue test tool and method for turbine bolt |
| CN105486574B (en) * | 2015-11-23 | 2018-05-29 | 中国南方航空工业(集团)有限公司 | Worm screw high/low temperature cycling fatigue experiment frock and test method |
| CN105424480A (en) * | 2015-12-16 | 2016-03-23 | 北京建筑材料检验研究院有限公司 | Dovetail-shaped anchoring connecting part testing device and method |
| CN105424480B (en) * | 2015-12-16 | 2018-07-10 | 北京建筑材料检验研究院有限公司 | A kind of swallow-tail form anchor connector test device and test method |
| CN108225916A (en) * | 2018-01-16 | 2018-06-29 | 南昌航空大学 | A kind of welding bolt cold crack experimental rig |
| CN110926940A (en) * | 2018-09-20 | 2020-03-27 | 上海汇众汽车制造有限公司 | Method for testing ultimate contact strength of material surface |
| CN109916709A (en) * | 2019-03-27 | 2019-06-21 | 江苏神马电力股份有限公司 | A kind of test joint and test tool |
| CN109916709B (en) * | 2019-03-27 | 2022-03-08 | 江苏神马电力股份有限公司 | Test joint and test tool |
| CN110849746A (en) * | 2019-12-07 | 2020-02-28 | 湖南圣人防水材料有限公司 | Ductility detection device is used in production of anti-fracture snow melt type waterproof material |
| CN113945367A (en) * | 2020-06-30 | 2022-01-18 | 三赢科技（深圳）有限公司 | Tensile test tool and tensile test machine |
| CN113984513A (en) * | 2021-10-27 | 2022-01-28 | 北京航空航天大学 | Near-far double-end aligning device |
| CN113984513B (en) * | 2021-10-27 | 2022-08-05 | 北京航空航天大学 | Near-far double-end aligning device |
| CN115963007A (en) * | 2023-02-10 | 2023-04-14 | 西南交通大学 | Force measuring bolt calibration test device |
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| CN104833572B (en) | 2017-11-10 |
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