CN117330304A - Thread stress distribution test device and test method - Google Patents
Thread stress distribution test device and test method Download PDFInfo
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- CN117330304A CN117330304A CN202311298536.1A CN202311298536A CN117330304A CN 117330304 A CN117330304 A CN 117330304A CN 202311298536 A CN202311298536 A CN 202311298536A CN 117330304 A CN117330304 A CN 117330304A
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- 238000012360 testing method Methods 0.000 title claims abstract description 73
- 238000010998 test method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000009662 stress testing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/241—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet by photoelastic stress analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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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
- G01N3/02—Details
- G01N3/04—Chucks
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the field of thread stress distribution tests, in particular to a thread stress distribution test device and a test method, wherein the thread stress distribution test device comprises: the method comprises the steps of carrying out dynamic test on deformation and stress distribution conditions of a thread section in a loading process by utilizing a GOMARAMIS measuring system through loading target tension of the loader, so as to obtain deformation, strain fields, stress distribution data and cloud pictures of the thread section. And can replace different test pieces to carry out a plurality of tests, obtain different thread tooth position stress and strain field distribution conditions, practice thrift experimental data acquisition and aftertreatment time and cost greatly.
Description
Technical Field
The invention relates to the field of thread stress distribution tests, in particular to a thread stress distribution test device and a test method.
Background
Threaded connections are one of the main means of connecting mechanical parts and damage to bolts can cause the entire machine to fail, or even to have catastrophic consequences. In order to increase the load carrying capacity and reliability of the threaded connection, specific analytical investigation of the stresses within the threads is required. Internal thread stress refers to the stress that is created in the connected component when a relative displacement occurs between the bolt and the connected component. The internal thread stress can be divided into the following two types according to the cause of the stress: tensile stress: the tensile stress is due to bolt elongation. Compressive stress: compressive stress is due to bolt compression.
At present, the experimental methods disclosed in the prior art documents of photoelastic application in improving threaded connection stress distribution and the study of the stress distribution rule of a circular threaded sleeve joint are experimental techniques for measuring the stress distribution situation of threads, wherein the strain gauge method disclosed in the prior art is based on mutual engagement and contact among threads, and the stress situation of the threads is difficult to directly measure in the experiment, and is generally obtained by attaching a strain gauge to the outer wall of the threaded joint, so that the stress and strain distribution rule of the joint under the load conditions of buckling, stretching, internal pressure and the like is studied, and the stress situation of the threads is further estimated. However, the method is only suitable for large-size threaded connectors, has high difficulty in pasting strain gauges on small thread teeth in the engineering field, and is not easy to implement. The practical model of photoelastic method is made up by using transparent epoxy resin through the process of high-temperature curing. The size of which needs to be enlarged to easily read the stress stripes in the thread. Machining stress generated by directly turning threads from an epoxy resin block is difficult to avoid, and changes and amplification of test piece materials can lead to incorrect results from stress analysis.
Disclosure of Invention
In order to solve the problems, the invention provides a thread stress distribution test device and a test method, and the problems that the change and amplification of the existing thread stress distribution test piece material can cause incorrect results of stress analysis.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme: a thread stress distribution test device and a test method, wherein the thread stress distribution test device comprises: the device comprises a rigid base, a support, a limit bolt, a loader, a clamp, a baffle and a shaft sleeve;
the support is arranged on the rigid base, the loader is arranged at the top of the support, the limit bolts are symmetrically arranged on the support, the baffle is arranged on the inner wall of the support, and the clamp is arranged between the baffle and the inner wall of the support;
the thread stress distribution test device adopts the following test method;
s1, turning the outer side of the nut into a cylinder, cutting off a threaded part of a bolt rod and the whole nut into a quarter along the circumferential direction, and exposing the cross section of the thread tooth so as to directly measure the thread tooth.
S2, sleeving the shaft sleeve on a bolt pair formed by assembling the nut and the bolt to be tested, and putting the nut, the bolt to be tested and the clamp into a clamp, wherein the tangential planes of the nut, the bolt to be tested and the clamp are aligned;
s3, installing the thread stress distribution test device on a test bed, wherein the loading device and the tested bolt are on the same vertical line, a threaded connecting hole is arranged in the loading device, the loading device is connected with the loading device through threads, and the loading device and the tested bolt have no circumferential and radial offset;
s4, the loading device applies constant or continuously increased tension on the screw thread of the tested bolt through the loader, and the loading device is used for simulating the load applied in the working process of the screw thread;
s5, establishing communication connection between the thread stress distribution testing device and a remote control system, wherein the remote control system of the thread stress distribution testing device is configured as a GOMAAMIS measuring system, and the GOMAAMIS measuring system is used for dynamically testing the deformation and stress distribution conditions of the thread in the process that the loading device applies constant or continuously increased tension to the screw thread of the tested bolt, so as to obtain the analysis result of the thread stress distribution test.
Further, the support comprises a support chassis and a support frame, and a support frame supporting plate is arranged between the support chassis and the support frame side wall.
Further, a support chassis threaded hole is formed in the support chassis of the support, and a support frame threaded hole is formed in the top of the support frame of the support.
Further, the rigid base is provided with a rigid base threaded hole which is matched with the support base chassis threaded hole in size, and the support is located right above the rigid base.
Further, the length of the baffle is smaller than that of the top of the support frame, the baffle is located inside the support frame, the baffle is perpendicular to the support frame, the outline of one side outer wall of the baffle is rectangular, and the side of the baffle, which is located on the side of the limit bolt, is concave arc-shaped.
Further, a clamp through hole is formed in the clamp, a bolt through hole is formed in the contact position of the baffle and the clamp through hole in the clamp, and the bolt through hole in the baffle is matched with the aperture of the clamp through hole in the clamp.
Further, one side of the clamp is in contact with the baffle, the other side of the clamp is opposite to the top of the support, the clamp is located on the side of the top of the support and is provided with a shaft sleeve groove matched with the shaft sleeve, the outer wall of the bottom of the clamp on the side of the baffle is a right angle, and the outer wall of the clamp on the top of the shaft sleeve is provided with a chamfer.
Further, the cross section of the shaft sleeve groove is circular, the diameter of the cross section of the shaft sleeve groove is larger than the diameter of the clamp through hole, and the shaft sleeve groove is positioned right above the clamp through hole.
The beneficial effects of the invention are as follows: the test device for testing the stress distribution of the thread (a model is tested by adopting a bolt rod with a quarter cut out of a thread part so as to observe the deformation and stress distribution of the thread) comprises a rigid base, a bearing seat, a loader, a shaft sleeve, a clamp, a baffle, a limit bolt, a screw and other structures, a real-size and raw material engineering test piece is adopted, a target tensile force is loaded by the loader, and the deformation and stress distribution of a thread section in the loading process are dynamically tested by utilizing a GOMARAMIS measuring system, so that the deformation, a strain field, stress distribution data and a cloud picture of the thread are obtained. And can replace different test pieces to carry out a plurality of tests, obtain different thread tooth position stress and strain field distribution conditions, practice thrift experimental data acquisition and aftertreatment time and cost greatly.
Drawings
FIG. 1 shows a thread stress testing device according to the present invention;
FIG. 2 is a flow chart of a thread stress test provided by the present invention;
fig. 3 is a top view of a thread stress testing and testing device provided by the invention.
1-rigid base, 2-support, 3-spacing bolt, 4-loader, 5-anchor clamps, 6-baffle, 7-axle sleeve, 8-to test bolt.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to fig. 1 to 3 so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 1 to 3, the technical scheme of the present application provides a thread stress distribution test device and a test method, wherein the thread stress distribution test device includes: the device comprises a rigid base 1, a support 2, a limit bolt 3, a loader 4, a clamp 5, a baffle 6 and a shaft sleeve 7;
the support 2 is arranged on the rigid base 1, the loader 4 is arranged at the top of the support 2, the limit bolts 3 are symmetrically arranged on the support 2, the baffle 6 is arranged on the inner wall of the support 2, and the clamp 5 is arranged between the baffle 6 and the inner wall of the support 2;
the thread stress distribution test device adopts the following test method;
s1, turning the outer side of the nut into a cylinder, cutting off a threaded part of a bolt rod and the whole nut into a quarter along the circumferential direction, and exposing the cross section of the thread tooth so as to directly measure the thread tooth.
S2, sleeving the shaft sleeve 7 on a bolt pair formed by assembling a nut and a bolt 8 to be tested, and putting the nut, the bolt 8 to be tested and the section of the clamp 5 into alignment;
s3, installing the thread stress distribution test device on a test bed, wherein the loading device and the bolt to be tested are on the same vertical line, a threaded connecting hole is arranged in the loader 4, the loader 4 is connected with the loading device through threads, and the loading device and the bolt to be tested are free from circumferential and radial offset;
s4, the loading device applies constant or continuously increased tension on the screw thread of the tested bolt through the loader 4 and is used for simulating the load applied in the working process of the screw thread;
s5, establishing communication connection between the thread stress distribution testing device and a remote control system, wherein the remote control system of the thread stress distribution testing device is configured as a GOMAAMIS measuring system, and the GOMAAMIS measuring system is used for dynamically testing the deformation and stress distribution conditions of the thread in the process that the loading device applies constant or continuously increased tension to the screw thread of the tested bolt, so as to obtain the analysis result of the thread stress distribution test.
Specifically, the support 2 includes a support chassis and a support frame, and a support frame support plate is provided between the support chassis and the support frame side wall.
Specifically, the support chassis of the support 2 is provided with a support chassis threaded hole, and the support frame top of the support 2 is provided with a support frame threaded hole.
Specifically, the rigid base 1 is provided with a rigid base threaded hole which is matched with the size of the support base plate threaded hole, and the support 2 is positioned right above the rigid base 1.
Specifically, the length of the baffle 6 is smaller than that of the top of the support frame, the baffle 6 is located inside the support frame, the baffle 6 is perpendicular to the support frame, the outline of one side outer wall of the baffle 6 is rectangular, and the side of the baffle 6, which is located on the side of the limit bolt 3, is in a concave arc shape.
Specifically, the inside anchor clamps 5 are provided with the anchor clamps through-hole, baffle 6 with anchor clamps through-hole contact department is provided with the bolt through-hole on the anchor clamps 5, just the bolt through-hole on the baffle 6 with the aperture of anchor clamps through-hole on the anchor clamps 5 matches.
Specifically, one side of the clamp 5 is in contact with the baffle 6, the other side of the clamp 5 is opposite to the top of the support 2, a shaft sleeve groove matched with the shaft sleeve 7 is formed in the side of the top of the support 2, the outer wall of the clamp 5, which is positioned on the side of the baffle 6, is a right angle, and a chamfer is formed in the outer wall of the top of the shaft sleeve 7, which is positioned on the clamp 5.
Specifically, the cross section of the shaft sleeve groove is circular, the diameter of the cross section of the shaft sleeve groove is larger than the diameter of the clamp through hole, and the shaft sleeve groove is positioned right above the clamp through hole.
The invention aims to invent a novel device and a novel testing method for directly testing the stress distribution condition of a thread. The test device for testing the stress distribution of the thread (a model is tested by adopting a bolt rod with a quarter cut out of a thread part so as to observe the deformation and stress distribution of the thread) comprises a rigid base, a bearing seat, a loader, a shaft sleeve, a clamp, a baffle, a limit bolt, a screw and other structures, a real-size and raw material engineering test piece is adopted, a target tensile force is loaded by the loader, and the deformation and stress distribution of a thread section in the loading process are dynamically tested by utilizing a GOMARAMIS measuring system, so that the deformation, a strain field, stress distribution data and a cloud picture of the thread are obtained. And can replace different test pieces to carry out a plurality of tests, obtain different thread tooth position stress and strain field distribution conditions, practice thrift experimental data acquisition post-processing time and cost greatly. The problem that incorrect results are obtained by stress analysis due to change and amplification of the materials of the thread stress distribution test piece is solved.
The experimental testing device is made of a large rigid structure, wherein the yield strength of the rigid material meets the loading requirement in order to ensure the reliability of experimental results.
Step 1: and installing a testing device.
And installing and debugging the device components so as to meet the test requirements.
Step 2: and installing a tested bolt rod.
The loader is used for positioning the bolt rod, the screw thread is arranged in the loader, the upper end of the loader is tightly connected with the tension applying device through the screw thread, the tension applying device is provided with a tension meter, and the force applying size is monitored in real time so as to ensure accurate data, and the lower bottom surface of the bolt rod is flush with the lower horizontal surface of the baffle plate so as to limit the transverse displacement and the circumferential displacement of the bolt rod. The thread notch plane of the bolt rod is aligned with the thread notch plane of the nut, namely the thread notch plane of the nut is in the same plane with the thread notch cross section of the bolt rod, so that the stress and strain conditions of the thread notch cross section of the nut and the thread notch cross section of the bolt rod can be obtained by testing at the same time.
Step 3: and (5) dynamic loading.
A constant or continuously increasing pulling force is exerted on the screw thread by the loading means.
Step 4: and obtaining the displacement and deformation of the cut sections of the nut and the bolt rod.
And uniformly spraying the paint speckles on the surface of the parallel section of the sample by adopting white matte paint, and after the paint is dried, forming mist random black points by adopting black matte paint, covering the surface of the sample, wherein the black matte paint needs to be fully atomized and uniformly distributed on the surface of the white paint. And dynamically testing the deformation and stress distribution conditions of the thread teeth at the two sides of the notch in the loading process by using a GOMARAMIS measuring system. The goaramis measurement system can evaluate three-dimensional and two-dimensional measurement data, and can apply three-dimensional and two-dimensional analysis functions to point data or facet data, which will be used in this patent to analyze strain and stress characteristics within the thread facets.
The advantage and beneficial effect of this patent scheme:
compared with the prior art paper test, the technical scheme of the application is that the test device tests the actual screw thread of the bolt rod in the engineering field;
PIRMORADIAN et al [1] verify the non-uniform stress distribution of a common triangular thread pair under the action of axial force by photoelastic test. Chen Haiping [2] and the like are used for researching the bearing distribution condition of the screw thread pair by utilizing an analysis method, a photoelastic test method and a finite element method.
[1]PIRMORADIAN M，NAEENI HA，FIROUZBAKHT M.Finite element analysis and experimental evaluation on stress distribution and sensitivity ofdental implants to assess optimum length and threadpitch[J].Computer Methods and Programs in Biomedicine，2020，187：105258.
[2] Chen Haiping, once climbing, square steel, etc. distribution law of screw pair bearing [ J ]. Mechanical engineering report 2010,46 (09): 171-178
The photoelastic method adopted in the above document is a test performed by simulating a real screw pair through plastics, and the real screw pair cannot measure strain and stress distribution through the method.
The test method and the GOMARAMIS measuring system can directly measure the deformation, stress and strain distribution of the thread.
Any embodiment of the invention can be used as an independent technical scheme or can be combined with other embodiments. All patents and publications mentioned in the specification are indicative of those of ordinary skill in the art to which this invention pertains and which may be applied. All patents and publications cited herein are hereby incorporated by reference to the same extent as if each individual publication were specifically and individually indicated to be incorporated by reference. The invention may be practiced without any element or elements, limitation or limitations, which are not expressly described herein. The terms and expressions which have been employed herein are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described, but it is recognized that various modifications are possible within the scope of the invention and of the claims. It is to be understood that the embodiments described herein are illustrative of the embodiments and features disclosed herein and that modifications and variations may be resorted to by those skilled in the art without departing from the spirit of this invention as those aspects are considered to fall within the scope of this invention as defined by the independent claims and the appended claims.
Claims (8)
1. The utility model provides a screw thread stress distribution test device and test method which characterized in that, screw thread stress distribution test device includes: the device comprises a rigid base (1), a support (2), a limit bolt (3), a loader (4), a clamp (5), a baffle (6) and a shaft sleeve (7);
the support (2) is arranged on the rigid base (1), the loader (4) is arranged at the top of the support (2), the limit bolts (3) are symmetrically arranged on the support (2), the baffle (6) is arranged on the inner wall of the support (2), and the clamp (5) is arranged between the baffle (6) and the inner wall of the support (2);
the thread stress distribution test device adopts the following test method;
s1, turning the outer side of the nut into a cylinder, cutting off a threaded part of a bolt rod and the whole nut into a quarter along the circumferential direction, and exposing the cross section of the thread tooth so as to directly measure the thread tooth.
S2, sleeving the shaft sleeve (7) on a bolt pair formed by assembling the nut and the bolt (8) to be tested, and putting the clamp (5), wherein the cut surfaces of the nut, the bolt (8) to be tested and the clamp (5) are aligned;
s3, installing the thread stress distribution test device on a test bed, wherein the loading device and the bolt to be tested are on the same vertical line, a threaded connecting hole is arranged in the loader (4), the loader (4) is connected with the loading device through threads, and the loading device and the bolt to be tested are free from circumferential and radial offset;
s4, the loading device applies constant or continuously increased tension on the screw thread of the tested bolt through the loader (4) and is used for simulating the load applied in the working process of the screw thread;
s5, establishing communication connection between the thread stress distribution testing device and a remote control system, wherein the remote control system of the thread stress distribution testing device is configured as a GOMAAMIS measuring system, and the GOMAAMIS measuring system is used for dynamically testing the deformation and stress distribution conditions of the thread in the process that the loading device applies constant or continuously increased tension to the screw thread of the tested bolt, so as to obtain the analysis result of the thread stress distribution test.
2. The thread stress distribution test device and the test method according to claim 1, wherein the support (2) comprises a support chassis and a support frame, and a support frame supporting plate is arranged between the support chassis and the support frame side wall.
3. The thread stress distribution test device and the test method according to claim 2, wherein a support chassis threaded hole is formed in the support chassis of the support (2), and a support frame threaded hole is formed in the top of the support frame of the support (2).
4. A thread stress distribution test apparatus and a test method according to claim 3, wherein the rigid base (1) is provided with a rigid base threaded hole which is matched with the size of the support base chassis threaded hole, and the support (2) is positioned vertically right above the rigid base (1).
5. The thread stress distribution test device and the test method according to claim 3, wherein the length of the baffle plate (6) is smaller than the length of the top of the support frame, the baffle plate (6) is located inside the support frame, the baffle plate (6) and the support frame are mutually perpendicular, the outline of one side outer wall of the baffle plate (6) is rectangular, and the outline of one side outer wall of the baffle plate (6) is rectangular and located on the side of the limit bolt (3) and is in a concave arc shape.
6. The thread stress distribution test device and the test method according to claim 1, wherein a fixture through hole is formed in the fixture (5), a bolt through hole is formed at a contact position of the baffle plate (6) and the fixture through hole in the fixture (5), and the bolt through hole in the baffle plate (6) is matched with the aperture of the fixture through hole in the fixture (5).
7. The thread stress distribution test device and the test method according to claim 6, wherein one side of the clamp (5) is in contact with the baffle (6), the other side of the clamp (5) is opposite to the top of the support (2), a shaft sleeve groove matched with the shaft sleeve (7) is formed in the side of the top of the support (2) on the clamp (5), the outer wall of the side of the bottom of the clamp (5) on the baffle (6) is a right angle, and a chamfer is formed in the outer wall of the top of the shaft sleeve (7) on the clamp (5).
8. The thread stress distribution test device and the test method according to claim 7, wherein the cross section of the shaft sleeve groove is circular, the diameter of the cross section of the shaft sleeve groove is larger than the diameter of the clamp through hole, and the shaft sleeve groove is positioned right above the clamp through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311298536.1A CN117330304A (en) | 2023-10-09 | 2023-10-09 | Thread stress distribution test device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311298536.1A CN117330304A (en) | 2023-10-09 | 2023-10-09 | Thread stress distribution test device and test method |
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| Publication Number | Publication Date |
|---|---|
| CN117330304A true CN117330304A (en) | 2024-01-02 |
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| CN202311298536.1A Pending CN117330304A (en) | 2023-10-09 | 2023-10-09 | Thread stress distribution test device and test method |
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|---|---|
| CN (1) | CN117330304A (en) |
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2023
- 2023-10-09 CN CN202311298536.1A patent/CN117330304A/en active Pending
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