CN104833572B - Bolt tension test tool and the tensile test apparatus using the test tool - Google Patents
Bolt tension test tool and the tensile test apparatus using the test tool Download PDFInfo
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- CN104833572B CN104833572B CN201510261823.4A CN201510261823A CN104833572B CN 104833572 B CN104833572 B CN 104833572B CN 201510261823 A CN201510261823 A CN 201510261823A CN 104833572 B CN104833572 B CN 104833572B
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Abstract
Tensile test apparatus the present invention relates to bolt tension test tool and using the test tool, bolt tension test tool including the use of when head connector and bolt jointing part setting up and down, head connector, which has, is used for the supporting plane that the lower end plane-plane contact positioning support with the head of respective bolt coordinates, supporting plane extends perpendicularly to above-below direction, and bolt jointing part includes the ball-joint structure for being used for the screw connecting structure connected to the screw rod of the bolt and being connected for the lower pull head with corresponding puller system.The invention provides a kind of bolt tension test tool that can ensure that screw rod axial direction is consistent with puller system direction of pull and the tensile test apparatus using the bolt tension test tool.
Description
Technical field
The present invention relates to a kind of bolt tension test tool and test the tensile test apparatus of the test tool.
Background technology
Bolt is as a kind of conventional fastener, including screw rod and the head for being arranged at screw rod end.The tension of bolt is strong
Degree is the important indicator for detecting bolt performance, with the rapid development of aerospace field, base of the bolt in aerospace field
Switching performance between body requires more and more higher, and the stretching test method and frock of bolt also in continuous renewal and improve.It is existing
Bolt tension test tool include head connector and bolt jointing part, use head connector, bolt jointing part during use
The head of bolt and screw rod are connected on the upper and lower pull head of puller system respectively, then bolt stretched by puller system
Experiment, the puller system output pulling force on direction straight up and down, but due to the mismachining tolerance and alignment error of tension test frock,
And connection when be unable to adjust automatically, easily cause bolt axial direction and puller system direction of pull it is inconsistent, this is easy for making
Into eccentric load, longitudinal component is produced, the axial force of bolt reduces, and result of the test is influenceed bigger.
The content of the invention
It is an object of the invention to provide a kind of bolt drawing that can ensure that screw rod axial direction is consistent with puller system direction of pull
Stretch test tool；The present invention also aims to provide a kind of tensile test apparatus using the bolt tension test tool.
In order to solve the above problems, the technical scheme of bolt tension test tool is in the present invention：
Bolt tension test tool, including the use of when head connector and bolt jointing part setting up and down, head connection
Part, which has, is used for the supporting plane that the lower end plane-plane contact positioning support with the head of respective bolt coordinates, the extension of supporting plane
Perpendicular to above-below direction, bolt jointing part includes the screw connecting structure for being connected with the screw rod of the bolt and is used in direction
The ball-joint structure being connected with the lower pull head of corresponding puller system.
For padding the supporting pad between the upper pull head of puller system and the head when head connector is by using
Piece is formed, and the supporting plane is made up of the upper surface of the support pad.
The ball-joint structure includes being provided with the top connection of outer bulb and is provided with the lower contact of interior ball groove, and outer bulb turns
Dynamic to be assemblied in interior ball groove, the upper end of outer bulb is provided with connecting rod, and the diameter of connecting rod is less than the diameter of the outer bulb, under
Offered on joint one end extends to the interior ball groove, the other end is extended on the outer peripheral face of the lower contact confession it is described on connect
The top connection mounting hole that head horizontally passes through.
The screw connecting structure includes the internal thread being opened in the connecting rod.
The ball-joint structure also includes spinning being connect for mounting in the external screw thread on lower pull head in the lower contact
Head.
The technical scheme of tensile test apparatus is in the present invention：
Tensile test apparatus, including upper and lower pull head and bolt tension test tool, bolt tension test tool including the use of
When head connector and bolt jointing part setting up and down, head connector has the lower surface being used for the head of respective bolt
The supporting plane that face contact positioning support coordinates, supporting plane extend perpendicularly to above-below direction, and bolt jointing part includes
For the screw connecting structure being connected to the screw rod of the bolt and the ball-joint being connected for the lower pull head with corresponding puller system
Structure.
The head connector by using when pad formed located at support pad between upper pull head and the head, the branch
Support plane is made up of the upper surface of the support pad.
The ball-joint structure includes being provided with the top connection of outer bulb and is provided with the lower contact of interior ball groove, and outer bulb turns
Dynamic to be assemblied in interior ball groove, the upper end of outer bulb is provided with connecting rod, and the diameter of connecting rod is less than the diameter of the outer bulb, under
Offered on joint one end extends to the interior ball groove, the other end is extended on the outer peripheral face of the lower contact confession it is described on connect
The top connection mounting hole that head horizontally passes through.
The screw connecting structure includes the internal thread being opened in the connecting rod.
The ball-joint structure also includes spinning being connect for mounting in the external screw thread on lower pull head in the lower contact
Head.
Beneficial effects of the present invention are：The head of bolt is connected by head connector with screw rod respectively with screw rod during use
Part is connected on the upper and lower pull head of puller system, and the supporting plane of head connector and the lower end plane-plane contact positioning on head support
Coordinate, to ensure that the axial direction of bolt is vertically extending, and even if because the mismachining tolerance of bolt jointing part causes screw rod to connect
There is certain deviation in fitting, and under the positioning action of supporting plane, ball-joint structure can be adjusted adaptively, without by bolt
Lower end is skewed, and such bolt is just always maintained in vertical posture up and down, and the axial direction of bolt is consistent with the direction of pull of puller system, is protected
Result of the test is demonstrate,proved.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of tensile test apparatus in the present invention；
Fig. 2 is the structural representation of lower contact in Fig. 1；
Fig. 3 is top connection mounting hole and the cooperation schematic diagram of interior ball groove in Fig. 2；
Fig. 4 is Fig. 2 B-B direction sectional view；
Fig. 5 is the structural representation of the top connection in Fig. 1.
Embodiment
The implementation of tensile test apparatus is for example shown in Fig. 1 ~ 5：Work is tested including upper pull head 3, lower pull head 9 and bolt tension
Dress, upper and lower pull head are tube-in-tube structure, bolt tension test tool including the use of when head connector and screw rod setting up and down
Connector, head connector by using when pad formed located at support pad 2 between upper pull head and the head 1 of respective bolt, prop up
Stake pad piece lower end is provided with the positioning boss with upper pull head location fit, and the upper surface of support pad extends perpendicularly to
Lower direction, the upper surface of support pad form the supporting plane coordinated for the lower end plane-plane contact positioning support with head.Spiral shell
Joint element for bar includes the screw connecting structure for being connected with the screw rod 4 of bolt and the ball pivot binding for being connected with lower pull head
Structure, ball-joint structure include being provided with the top connection 5 of outer bulb 7 and are provided with the lower contact 6 of interior ball groove 14, and outer bulb rotates dress
Assigned 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, and the upper end of outer bulb is set
Connecting rod is equipped with, the diameter of connecting rod is less than the diameter of outer bulb, and screw connecting structure includes the interior spiral shell being opened in connecting rod
Line, offer in lower contact one end extend to interior ball groove, the other end extend on the outer peripheral face of lower contact for top connection along water
Square to through top connection mounting hole, top connection mounting hole includes the connecting rod that is adapted to connecting rod bar footpath of aperture and installs hole section
12 and the outer bulb mounting hole section 13 that is adapted to outer bulb diameter of aperture, ball-joint structure also includes spinning the extension in lower contact
Loaded on the male connection 8 on lower pull head.Figure middle term 11 represents lower contact screw thread.
In use, the head for making bolt by support pad is connected with upper pull head, the upper surface bearing of trend of support pad
Supported perpendicular to above-below direction, therefore by the positioning of support pad, bolt is held in vertical state, and top connection passes through top connection
Mounting hole is installed in lower contact, and the internal thread in connecting rod is connected with screw flight, and so upper and lower pull head can pass through bolt
Tension test frock applies pulling force, even if error occur in the making and installation of lower pull head, lower pull head can above pull head be produced from relatively
Adapt to rotate to make up this error, and positioned because bolt is supported by support pad always, so lower pull head is adaptively being adjusted
During whole, the axial direction of bolt can be also always maintained in upper and lower vertical state, the axial direction of bolt and the direction of pull one of puller system
Cause, therefore the result of the test of tension test can be ensured.
In the other embodiments of this tensile test apparatus：Support rim in support pad can not also be set；Certain head
Portion's connector may not be gasket construction, for example the thicker cushion block structure of thickness；Head connector can also be with pull-up
It is first body formed；Lower contact can also be first body formed with drop-down；Top connection mounting hole can not also be set, now upper and lower joint
It can be non-disconnectable ball pivot chain structure.
The implementation of bolt tension test tool is for example shown in Fig. 1 ~ 5：The concrete structure of bolt tension test tool with it is above-mentioned
Bolt tension test tool described in each tensile test apparatus embodiment is identical, will not be described in detail herein.
Claims (6)
1. bolt tension test tool, including the use of when head connector and bolt jointing part setting up and down, it is characterised in that：
Head connector, which has, is used for the supporting plane that the lower end plane-plane contact positioning support with the head of respective bolt coordinates, and support is flat
Face extends perpendicularly to above-below direction, and bolt jointing part includes being used to be connected knot with the screw rod that the screw rod of the bolt is connected
Structure and the ball-joint structure being connected for the lower pull head with corresponding puller system, the ball-joint structure include being provided with outer bulb
Top connection and be provided with the lower contact of interior ball groove, for outer bulb rolling assembling in interior ball groove, the upper end of outer bulb is provided with company
Extension bar, the diameter of connecting rod are less than the diameter of the outer bulb, and one end is offered in lower contact and extends to the interior ball groove, another
Hold the top connection mounting hole horizontally passed through for the top connection extended on the outer peripheral face of the lower contact；The spiral shell
Bar attachment structure includes being opened in the internal thread of the connecting rod upper end.
2. bolt tension test tool according to claim 1, it is characterised in that：Used when the head connector is by using
Formed in padding the support pad between the upper pull head of puller system and the head, the supporting plane is by the support pad
Upper surface form.
3. bolt tension test tool according to claim 1, it is characterised in that：The ball-joint structure also includes spinning
It is used to mount in the male connection on lower pull head in the lower contact.
4. tensile test apparatus, including upper and lower pull head and bolt tension test tool, bolt tension test tool including the use of when
Head connector and bolt jointing part setting up and down, it is characterised in that：Head connector has the head being used for respective bolt
The supporting plane that the lower end plane-plane contact positioning support in portion coordinates, supporting plane extend perpendicularly to above-below direction, screw rod
Connector includes being used for the screw connecting structure connected to the screw rod of the bolt and for the lower pull head phase with corresponding puller system
Ball-joint structure even, the ball-joint structure include being provided with the top connection of outer bulb and are provided with the lower contact of interior ball groove,
Outer bulb rolling assembling is in interior ball groove, and the upper end of outer bulb is provided with connecting rod, and the diameter of connecting rod is less than the outer bulb
Diameter, offer that one end extends to the interior ball groove, the other end is extended on the outer peripheral face of the lower contact in lower contact
The top connection mounting hole horizontally passed through for the top connection；The screw connecting structure includes being opened in the connecting rod
The internal thread of upper end.
5. tensile test apparatus according to claim 4, it is characterised in that：Pad is located at when the head connector is by using
Support pad between upper pull head and the head is formed, and the supporting plane is made up of the upper surface of the support pad.
6. tensile test apparatus according to claim 4, it is characterised in that：The ball-joint structure also includes spinning in institute
State and be used to mount in the male connection on lower pull head in lower contact.
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 CN104833572A (en) | 2015-08-12 |
| CN104833572B true CN104833572B (en) | 2017-11-10 |
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| CN201510261823.4A Active 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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| CN105222944B (en) * | 2015-09-18 | 2018-01-02 | 河南航天精工制造有限公司 | The test method and high-temperature test device of locking torque test |
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| 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 |
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| 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 |
| CN113984513B (en) * | 2021-10-27 | 2022-08-05 | 北京航空航天大学 | Near-far double-end aligning device |
| CN115963007B (en) * | 2023-02-10 | 2023-06-27 | 西南交通大学 | Force measuring bolt calibration test device |
| CN117890235B (en) * | 2024-03-14 | 2024-06-11 | 航天精工股份有限公司 | Torsion resistance test device for bolt and nut assembly |
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| CN104833572A (en) | 2015-08-12 |
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