CN109520831B - Bolt connection static test tool, test system and use method - Google Patents
Bolt connection static test tool, test system and use method Download PDFInfo
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- CN109520831B CN109520831B CN201811434807.0A CN201811434807A CN109520831B CN 109520831 B CN109520831 B CN 109520831B CN 201811434807 A CN201811434807 A CN 201811434807A CN 109520831 B CN109520831 B CN 109520831B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0021—Torsional
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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Abstract
The invention relates to a bolt connection static test tool, a test system and a using method, which comprises a first connecting piece and a second connecting piece, the first connecting piece and the second connecting piece are provided with connecting channels for connecting bolts to be tested, two side surfaces of the first connecting piece are fixedly connected with first side plates, two side surfaces of the second connecting piece are fixedly connected with second side plates, different positions of the edges of the first side plate and the second side plate can be connected with a first pull head, the first pull head can be used for applying pulling force, shearing force and bending moment to the bolt to be tested, the first side plate and the second side plate are provided with torque loading mechanisms, the torque loading mechanisms can be connected with second sliders, the second pull head can be used for applying torsion to the bolt to be tested, and by adopting the test tool, the same tool can be used for applying various loads to the bolt to be tested, so that the universality is higher.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to a bolt connection static test tool, a test system and a using method.
Background
The bolt connection is the most common structural connection method, and in order to ensure the reliability of the bolt connection, various loads are applied to the bolt to perform a bolt performance test so as to determine the stress and strain conditions of the bolt under various loads, thereby providing a basis for finite element analysis and bolt strength check.
The loads applied by the bolt test include: axial tensile load, moment load, torque load, shear load, and the like. For bolt tests needing to apply various loads, the existing method is to design a special tool for each load, each tool can only be used for a bolt performance investigation test for applying a single load, the method has the defects of more types of required tools, no universality among the tools for applying different loads, high tool design and manufacturing cost and the like. When the static test is carried out on the bolt, different tools need to be replaced when different loads are applied, the time cost of the test is increased, and the efficiency is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a bolt connection static test tool, which can simultaneously apply tensile load, bending moment load, torque load and shearing load to a bolt on one set of tool, increases the universality of the bolt static test tool, reduces the design and manufacturing cost of the test tool, greatly reduces the connection frequency of a lead on the surface of the bolt and the replacement frequency of the tool due to the fact that various loads can be applied on one set of tool, and greatly improves the test efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a bolted connection static test frock, includes first connecting piece and second connecting piece, be equipped with the interface channel that is used for connecting the bolt that awaits measuring on first connecting piece and the second connecting piece, the first curb plate of both sides face fixedly connected with of first connecting piece, the both sides face fixedly connected with second curb plate of second connecting piece, first pull head can be connected to first curb plate and second curb plate border department different positions, and first pull head can be used to exert pulling force, shearing force and moment of flexure to the bolt that awaits measuring, be equipped with moment of torsion loading mechanism on first curb plate and the second curb plate, the last second pull head that can connect of moment of torsion loading mechanism, the second pull head can be used to exert torsion to the bolt that awaits measuring.
Furthermore, the connecting channel comprises a through hole which is arranged on the first connecting piece and is matched with the bolt to be detected and a threaded hole which is arranged on the second connecting piece, is concentric with the through hole and is matched with the bolt to be detected.
Furthermore, the edge that first curb plate and second curb plate are used for connecting first pull head is equipped with the application of force hole, the application of force hole includes first application of force hole, second application of force hole and third application of force hole, the axis of connecting channel is located the plane that the central line of the first application of force hole of first curb plate and second curb plate formed, the plane that the second application of force hole central line of first curb plate and second curb plate formed is located one side of connecting channel and is parallel with the axis of connecting channel, and the plane that the third application of force hole central line of first curb plate and second curb plate formed is perpendicular with the axis of connecting channel.
Further, the first slider comprises a first connecting part and a first force application part which are integrally connected, and the first connecting part can be fixedly connected with the first side plate or the second side plate through the force application hole.
Furthermore, the torque loading mechanism comprises a first torque loading part and a second torque loading part, the first torque loading part and the second torque loading part are respectively fixed on the first side plate and the second side plate which are arranged on different sides, and the first torque loading part and the second torque loading part are positioned on the same side of the connecting channel.
Furthermore, first moment of torsion loading spare and second moment of torsion loading spare all include support and the connecting plate that the integral type is connected, and the support of first moment of torsion loading spare is fixed on first curb plate, and the support of second moment of torsion loading spare is fixed on the second curb plate, the connecting plate of first moment of torsion loading spare and the symmetry plane of the connecting plate of second moment of torsion loading spare all lie in with connect the perpendicular plane of passageway axis.
Further, the second slider comprises a second connecting portion and a second force application portion which are integrally connected, and the second connecting portion can be fixedly connected with the connecting plate.
The invention also discloses a bolt connection static test system which comprises a tension tester, a detection device and the bolt connection static test tool, wherein the tension tester is used for applying load to a bolt to be tested through the bolt connection static test tool, the detection device comprises a strain gauge and strain measurement equipment, the strain gauge is used for attaching to the surface of the bolt to be tested, and the strain gauge is connected with the strain measurement equipment and can transmit strain information of the surface of the bolt to be tested to the strain measurement equipment.
The invention also discloses a using method of the bolt connection static test system, which comprises the following steps:
step 1: and attaching a strain gauge to the bolt to be measured, connecting the bolt to be measured with the first connecting piece and the second connecting piece, and connecting the strain gauge with strain measurement equipment through a lead.
Step 2: according to the experimental requirement, the first side plate and the second side plate are connected with the tensile testing machine through the first pull head or the second pull head.
And step 3: and starting the tensile testing machine, applying load to the bolt to be tested through the first side plate and the second side plate, and reading the surface strain value of the bolt to be tested through strain measurement equipment.
Further, in the step 2:
when the bolt is subjected to a tensile load experiment, the two first pull heads are fixedly connected with the first side plate and the second side plate through the first force application holes respectively, and the first pull heads are connected with a tensile testing machine.
When a bending moment load experiment is carried out on the bolt, the two first pull heads are respectively and fixedly connected with the first side plate and the second side plate through the second force application holes, and the first pull heads are connected with the tensile testing machine.
When the bolt is subjected to a shear load experiment, the two first pull heads are fixedly connected with the first side plate and the second side plate through the third force application holes respectively, and the first pull heads are connected with the tensile testing machine.
When a torque load experiment is carried out on the bolt, the two second pull heads are respectively fixed on the first torque loading piece and the second torque loading piece, and the second pull heads are connected with the tensile testing machine.
The invention has the beneficial effects that:
the bolt connection static test tool is matched with a tensile testing machine for use, four loads such as tensile load, bending moment load, torque load, shearing load and the like can be simultaneously applied to a bolt by adopting one tool, the universality of the bolt static test tool is improved, and the design and manufacturing cost of the test tool is reduced; because various loads can be completed on one set of tool, the frequency of lead connection on the surface of the strain bolt and the number of times of tool replacement are greatly reduced, and the test efficiency is greatly improved. The invention has wide application prospect in engineering practice.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic front view of the overall structure of the tool of the present invention;
FIG. 2 is a schematic side view of the overall structure of the inventive tool;
FIG. 3 is a schematic view of the invention taken along line A of FIG. 2;
FIG. 4 is a schematic view of the tool of the present invention in a use state when a tensile load is applied;
FIG. 5 is a schematic view of the tool of the present invention in a use state when a bending moment load is applied;
FIG. 6 is a schematic view of the tool of the present invention in use when applying a shear load;
FIG. 7 is a schematic top view of the tool of the present invention in use for applying a torque load;
FIG. 8 is a schematic side view of the tool of the present invention in use with a torque load applied;
FIG. 9 is a schematic view of the assembly of the strain gauge and the bolt to be tested according to the present invention;
the device comprises a first connecting piece, a second connecting piece, a first side plate, a rectangular surface, a curved surface, a connecting surface, a side plate, a bolt, a first force application hole, a second force application hole, a third force application hole, a first pull head, a first connecting part, a first force application part, a loading pin, a first torque loading part, a support, a connecting plate, a second torque loading part, a second pull head, a second connecting part, a second force application part, a second torque loading part, a first torque loading part, a second pull head, a second force application part, a second torque loading part, a first torque loading part, a second torque loading part, a first.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Just as the introduction of background art, when carrying out the static test to the bolt, need change different frocks when applying different loads, increase experimental time cost, inefficiency, to above-mentioned problem, this application provides a bolted connection static test frock.
In an exemplary embodiment of the present application, as shown in fig. 1 to 3, a bolt-on static test tool includes a first connecting member 1 and a second connecting member 2, the first connecting piece and the second connecting piece are both cubic blocks, the centers of the first connecting piece and the second connecting piece are provided with connecting channels, the connecting channel is used for installing a bolt to be tested and comprises a through hole which is arranged on the first connecting piece and is matched with the bolt to be tested and a threaded hole which is arranged on the second connecting piece and is concentric with the through hole and is matched with the bolt to be tested, when in use, the bolt to be tested passes through the first connecting piece through the through hole, and the bolt to be tested is screwed on the second connecting piece through the threaded hole, the fixing nut is screwed on the bolt to be tested, and the first connecting piece and the second connecting piece are compressed tightly by using the fixing nut, so that the fixed connection of the bolt to be tested and the first connecting piece and the second connecting piece is realized.
Two sides of the first connecting piece are fixed with a first side plate 3 through side plate bolts, and two sides of the second connecting piece are fixed with a second side plate 4 through side plate bolts 5. Be equipped with curb plate pin 14 between first connecting piece and the first curb plate, first curb plate passes through the curb plate pin and transmits load to first connecting piece, be equipped with the curb plate pin between second connecting piece and the second curb plate, the second curb plate utilizes the curb plate pin to transmit load to the second connecting piece.
The outer side faces of the first side plate and the second side plate are composed of two rectangular faces 3-1, an arc face 3-2 and an arc connecting face 3-3, one rectangular face of the first side plate and one rectangular face of the second side plate are arranged oppositely, and the other two rectangular faces, the other two arc faces and the other two arc connecting faces are arranged symmetrically relative to the axes of the through hole and the threaded hole.
And a plurality of force application holes are formed in the edges of the arc-shaped surfaces of the first side plate and the second side plate and comprise a first force application hole 6, a second force application hole 7 and a third force application hole 8.
The axes of the through holes and the threaded holes are located on a plane where central connecting lines of the first force application holes of the first side plate and the second side plate are located, reverse tensile force is applied to the first side plate and the second side plate through the first force application holes respectively, and tensile load can be applied to the bolt to be tested.
The plane of the central connecting line of the second force application holes of the first side plate and the second side plate is positioned on one side of the axis of the through hole and the axis of the threaded hole and is parallel to the axis of the through hole and the axis of the threaded hole, and the second force application holes apply reverse pulling force to the first side plate and the second side plate respectively so as to apply bending moment load to the bolt to be tested.
The plane of the central connecting line of the third force application holes of the first side plate and the second side plate is perpendicular to the axis of the through hole and the threaded hole, reverse tensile force is applied to the first side plate and the second side plate through the third force application holes respectively, and shearing load can be applied to the bolt to be tested.
First application of force hole, second application of force hole and third application of force hole department on first curb plate, the second curb plate all can connect first pull head 9, applys load to first curb plate and second curb plate through first pull head, first pull head includes first connecting portion 9-1 and first application of force portion 9-2, be equipped with the mounting hole that matches with the application of force hole on the first connecting portion, first pull head passes through mounting hole, loading pin 10 and application of force hole and first curb plate or second curb plate fixed connection, the shape and the tensile testing machine phase-match of first application of force portion, first application of force portion can be connected with tensile testing machine.
The bolt testing device is characterized in that a torque loading mechanism is further fixed on the first side plate and the second side plate, the torque loading mechanism comprises a first torque loading piece 11 and a second torque loading piece 12, the first torque loading piece is fixed on the first side plate, the second torque loading piece is fixed on the second side plate, the first side plate and the second side plate which are used for fixing the first torque loading piece and the second torque loading piece are the first side plate and the second side plate which are not on the same side, the first torque loading piece and the second torque loading piece are located on the same side of the axis of the through hole and the threaded hole, reverse tensile force is applied to the first torque loading piece and the second torque loading piece, and torque loading can be applied to a bolt to be tested.
The first torque loading piece and the second torque loading piece respectively comprise a support 11-1 and a connecting plate 11-2, the supports of the first torque loading piece are fixed on the first side plate, the supports of the second torque loading piece are fixed on the second side plate, the connecting plates are fixed on the supports, the mounting positions of the first torque loading piece and the second torque loading piece enable the symmetrical planes of the two connecting plates to be located on the same plane and perpendicular to the axes of the through hole and the threaded hole, the assembling requirement of the tensile testing machine is met, mounting holes are formed in the connecting plates, the connecting plates can be connected with the second pull head 13 through the mounting holes, and the second pull head is used for applying load.
The second pull head comprises a second connecting portion 13-1 and a second force application portion 13-2 which are connected in an integrated mode, a slot matched with the connecting plate is formed in the second connecting portion, a mounting hole is formed in the second connecting portion, the connecting plate is inserted into the slot of the second connecting portion, and the connecting plate is fixedly connected with the second connecting portion through the loading pin, the connecting plate and the mounting hole in the second connecting portion, so that the second pull head is fixedly connected with the first torque loading piece or the second torque loading piece, the shape of the second force application portion is matched with that of the tensile testing machine, and the second force application portion can be connected with the tensile testing machine.
The invention also discloses a bolt connection static test system which comprises a tension tester, a detection device and the bolt connection static test tool, wherein the tension tester adopts the existing tension tester, the tension tester can be connected with the bolt connection static test tool through the first pull head or the second pull head to apply load to a bolt to be tested, the detection device comprises a strain gauge and strain measurement equipment, when in use, the strain gauge is attached to the surface of the bolt to be tested, a lead on the strain gauge extends out through the first connecting piece and a lead hole on the first side plate and is connected with the strain measurement equipment, the strain gauge can detect the strain on the surface of the bolt to be tested and transmit strain information to the strain measurement equipment, and the strain measurement equipment adopts the existing strain measurement equipment matched with the strain gauge.
The invention also discloses a using method of the bolt connection static test system, which comprises the following steps:
step 1: as shown in fig. 9, a strain gauge 17 is attached to the bolt 15 to be measured, the bolt to be measured passes through the first connecting piece through the through hole and is screwed on the second connecting piece through the threaded hole, the fixing nut is screwed on the bolt to be measured and tightly presses the first connecting piece and the second connecting piece, the bolt to be measured is fixedly connected with the first connecting piece and the second connecting piece, and the lead wire on the strain gauge extends out through the first connecting piece and the lead hole 16 on the first side plate to connect the strain measuring device.
Step 2: according to the experimental requirement, the first side plate and the second side plate are connected with the tensile testing machine through the first pull head or the second pull head.
When a tensile load experiment is performed on the bolt, as shown in fig. 4, the first connecting portions of the two first sliders are respectively and fixedly connected with the first side plate and the second side plate through the first force application hole and the loading pin, at this time, the axes of the two first sliders are overlapped with the axis of the bolt to be tested, the first sliders are connected with a tensile testing machine, the tensile testing machine pulls the two first sliders, and the first sliders can apply tensile load to the bolt to be tested through the first side plate, the second side plate, the first connecting piece and the second connecting piece.
When a bending moment load experiment is performed on the bolt, as shown in fig. 5, the first connecting portions of the two first pulling heads are fixedly connected with the first side plate and the second side plate respectively through the second force application hole and the loading pin, at this time, the axes of the two first pulling heads are located on one side of the axis of the bolt to be tested and are parallel to the axis of the bolt to be tested, the two first pulling heads are connected with the tensile testing machine, the tensile testing machine pulls the two first pulling heads, and the first pulling heads can apply bending moment load to the bolt to be tested through the first side plate, the second side plate, the first connecting piece and the second connecting piece.
When a shear load experiment is performed on the bolt, as shown in fig. 6, the first connecting portions of the two first sliders are respectively and fixedly connected with the first side plate and the second side plate through the third force application hole and the loading pin, the axes of the two first sliders are perpendicular to the axis of the bolt to be tested, the first sliders are connected with a tensile testing machine, the tensile testing machine pulls the two first sliders, and the first sliders can apply shear load to the bolt to be tested through the first side plate, the second side plate, the first connecting piece and the second connecting piece.
When a torque load experiment is performed on the bolt, as shown in fig. 7-8, the second connecting parts of the two second sliders are respectively fixed on the connecting plates of the first torque loading piece and the second torque loading piece through the loading pins, at this time, the axes of the two second sliders are positioned on one side of the axis of the bolt to be tested and are perpendicular to the axis of the bolt to be tested, the second sliders are connected with the tensile testing machine, and the tensile testing machine pulls the second sliders to apply a torque load on the bolt to be tested.
And step 3: and starting the tensile testing machine, applying load to the bolt to be tested through the first side plate and the second side plate, and reading the surface strain value of the bolt to be tested through strain measurement equipment.
According to the bolt connection static test system, a set of tool can be adopted to apply various loads to the bolt to be tested, the universality of the bolt static test tool is improved, and the design and manufacturing costs of the test tool are reduced; because various loads can be completed on one set of tool, the frequency of lead connection on the surface of the strain bolt and the number of times of tool replacement are greatly reduced, and the test efficiency is greatly improved. The invention has wide application prospect in engineering practice.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A bolt connection static test tool is characterized by comprising a first connecting piece and a second connecting piece, wherein connecting channels used for connecting bolts to be tested are arranged on the first connecting piece and the second connecting piece, two side faces of the first connecting piece are fixedly connected with a first side plate, two side faces of the second connecting piece are fixedly connected with a second side plate, different positions of edges of the first side plate and the second side plate can be connected with first pull heads, the first pull heads can be used for applying tension, shearing force and bending moment to the bolts to be tested, torque loading mechanisms are arranged on the first side plate and the second side plate and can be connected with second pull heads, and the second pull heads can be used for applying torsion to the bolts to be tested;
force application holes are formed in the edges, used for being connected with the first pull head, of the first side plate and the second side plate, the force application holes comprise a first force application hole, a second force application hole and a third force application hole, the axis of the connecting channel is located on a plane formed by the central connection lines of the first force application holes of the first side plate and the second side plate, the plane formed by the central connection lines of the second force application holes of the first side plate and the second side plate is located on one side of the connecting channel and is parallel to the axis of the connecting channel, and the plane formed by the central connection lines of the third force application holes of the first side plate and the second side plate is perpendicular to the axis of the connecting channel;
the torque loading mechanism comprises a first torque loading piece and a second torque loading piece, the first torque loading piece and the second torque loading piece are respectively fixed on a first side plate and a second side plate which are not arranged at the same side, and the first torque loading piece and the second torque loading piece are positioned at the same side of the axis of the connecting channel; and the axis of the second pull head is vertical to the axis of the bolt to be detected.
2. The bolted connection static test tool of claim 1, wherein the connection channel comprises a through hole arranged on the first connecting piece and matched with the bolt to be tested, and a threaded hole arranged on the second connecting piece and concentric with the through hole and matched with the bolt to be tested.
3. The bolted static test tool of claim 1, wherein the first slider comprises a first connecting part and a first force application part which are integrally connected, and the first connecting part can be fixedly connected with the first side plate or the second side plate through the force application hole.
4. The tool for testing the static force of the bolted connection according to claim 1, wherein the first torque loading member and the second torque loading member each comprise a support and a connecting plate which are integrally connected, the support of the first torque loading member is fixed on the first side plate, the support of the second torque loading member is fixed on the second side plate, and the symmetry planes of the connecting plate of the first torque loading member and the connecting plate of the second torque loading member are both located on a plane perpendicular to the axis of the connecting channel.
5. The bolted connection static test tool of claim 4, wherein the second slider comprises a second connecting part and a second force application part which are integrally connected, and the second connecting part can be fixedly connected with the connecting plate.
6. A bolted static test system is characterized by comprising a tensile testing machine, a detection device and the bolted static test tool according to any one of claims 1 to 5, wherein the tensile testing machine is used for applying load to a bolt to be tested through the bolted static test tool, the detection device comprises a strain gauge and strain measurement equipment, the strain gauge is used for being attached to the surface of the bolt to be tested, the strain gauge is connected with the strain measurement equipment, and strain information on the surface of the bolt to be tested can be transmitted to the strain measurement equipment.
7. A method of operating a bolted static test system of claim 6, comprising the steps of:
step 1: attaching a strain gauge to the bolt to be measured, connecting the bolt to be measured with the first connecting piece and the second connecting piece, and connecting the strain gauge with strain measurement equipment through a lead;
step 2: according to the experimental requirements, the first side plate and the second side plate are connected with the tensile testing machine by using the first pull head or the second pull head;
and step 3: and starting the tensile testing machine, applying load to the bolt to be tested through the first side plate and the second side plate, and reading the surface strain value of the bolt to be tested through strain measurement equipment.
8. The method of operation of claim 7, wherein: in the step 2, in the step of processing,
when a tensile load experiment is carried out on the bolt, two first pull heads are fixedly connected with the first side plate and the second side plate through the first force application holes respectively, and the first pull heads are connected with a tensile testing machine;
when a bending moment load experiment is carried out on the bolt, the two first pull heads are respectively and fixedly connected with the first side plate and the second side plate through the second force application holes, and the first pull heads are connected with a tensile testing machine;
when a shearing load experiment is carried out on the bolt, the two first pull heads are respectively and fixedly connected with the first side plate and the second side plate through the third force application holes, and the first pull heads are connected with a tensile testing machine;
when a torque load experiment is carried out on the bolt, the two second pull heads are respectively fixed on the first torque loading piece and the second torque loading piece, and the second pull heads are connected with the tensile testing machine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811434807.0A CN109520831B (en) | 2018-11-28 | 2018-11-28 | Bolt connection static test tool, test system and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811434807.0A CN109520831B (en) | 2018-11-28 | 2018-11-28 | Bolt connection static test tool, test system and use method |
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| CN109520831A CN109520831A (en) | 2019-03-26 |
| CN109520831B true CN109520831B (en) | 2021-06-18 |
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| CN111645881B (en) * | 2020-05-28 | 2023-09-08 | 上海航天设备制造总厂有限公司 | Load connection and unlocking capability test tool and method |
| CN112763312A (en) * | 2020-12-29 | 2021-05-07 | 中国航空工业集团公司西安飞机设计研究所 | Tension-shear composite bolt fatigue test clamp and method |
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