CN106441968A - Furniture structure node anti-bending fatigue strength testing device and testing method - Google Patents
Furniture structure node anti-bending fatigue strength testing device and testing method Download PDFInfo
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- CN106441968A CN106441968A CN201610903337.2A CN201610903337A CN106441968A CN 106441968 A CN106441968 A CN 106441968A CN 201610903337 A CN201610903337 A CN 201610903337A CN 106441968 A CN106441968 A CN 106441968A
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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
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/001—Testing of furniture, e.g. seats or mattresses
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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
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
Abstract
The invention provides a furniture structure node anti-bending fatigue strength testing device and a testing method. The device is structurally composed of a workbench, a loading unit and a computer control system. A vertical column and a test piece clamping mechanism in the loading unit are installed on a fixing table plate in the workbench, and installation, adjustment and locking of the positions are carried out through longitudinal or transverse dovetail groove rails on the fixing table plate, and the computer control system is installed on the workbench through a rotary arm. The testing method includes the steps that 1, a test piece is installed and clamped; 2, a loading head is instead and adjusted; a force value is set, and cyclic loading is carried out; 4, the test is loaded. The testing device and the testing method have the advantages of being capable of being widely applied to testing the anti-bending fatigue strength and durability of a furniture structure node part during stress or stress tensile loads, providing a test basis for researching the strength performance and strain distribution of a furniture structure node, and configuring one or more sets of loading units according to requirements to adapt to simultaneous testing of test pieces with different numbers.
Description
Technical field
The present invention relates to a kind of furnature construction node edurance beding strength test device and method of testing are it is adaptable to be difference
The furnature construction optimization of material, structure design, joint research and strength test provide test basis, belong to material and product testing
Technical field.
Background technology
Furnature construction node and joint are the places being also easy to produce destruction during furniture uses most, the property to furniture material
Energy, structure design, bond strength require highest, and the detection of the structural strength at furniture node and stress analysis not only affect furniture
The shape-designing of designer, also new for the research and development of new material, the integrally-built optimization design of furniture and furniture to scientific research personnel
The research of the high intensity joining technique of material has great theory and practice meaning.
How strength test for furnature construction node and joint and stress analysis both at home and abroad at present, broken using dead load
Bad test and the method for finite element analysis.Dead load failure test is the maximal destruction load with furnature construction（Or moment of flexure）To sentence
Disconnected structural strength, but show, the destruction of furnature construction is mainly derived from the fatigue rupture of structural member through pre-stage test demonstration
Rather than static(al) destroys；Finite element analysis is with reference to furnature construction Semi-rigid property, by analogy method, understands furniture node
Internal stress distribution situation, simple furniture parts finite element analysis, due to not having the basis of cyclic loading test, does not have yet
Consider the difference of furniture parts material property, thus can not truly reflect the intensity of structure node, have not yet been formed a set of high precision,
The strong analysis method of systematicness.
At present both at home and abroad using the test to furniture volume fatigue strength as product standard, and for furnature construction node or
The fatigue strength of junction node does not have clear and definite method of testing and specification, in fact, the fatigue strength of research furnature construction node
Be more suitable for furniture structure design and research and development, research different furniture materials, different joinery and its construction, different metal connecting-piece structure and
Furniture parts node strength under different glue kind junction form, target is more accurate, puts into also less, flexibility is higher.
Content of the invention
Proposed by the present invention is a kind of furnature construction node edurance beding strength test device and method of testing, its objective is
Overcome the above-mentioned deficiency existing for prior art, can be widely applied to test furnature construction node component and draw load pressurized or pressurized
Edurance beding strength during lotus and its durability, are the furnature construction optimization of unlike material, structure design, engage research, structure
Node strength provides test basis with Strain Distribution test, whole for the research and development of furniture new material high intensity joining technique, furniture
The research of body Optimal Structure Designing technology has important theory directive significance and actual application value.
The technical solution of the present invention：A kind of furnature construction node edurance beding strength test device, its structure includes
Column 12 in workbench, loading unit and computer control system, wherein loading unit and specimen holder mechanism 7 are all pacified respectively
It is contained on the stationary platen 11 in workbench, respectively position is carried out by the vertical or horizontal dovetail grooved rail on stationary platen 11
Install, adjust and lock, and realize the clamping to test specimen 17 and loading；Computer control system 16 is arranged on work by turning arm
In station, for manipulating loading unit.
Its method of testing, comprises the steps：
（1）Install and clamping test specimen；
（2）Install and adjust loading head；
（3）Set force value and carry out CYCLIC LOADING；
（4）Load test is automatically controlled and processed by computer control system.
Advantages of the present invention：
1）Can be widely applied to test furnature construction node component pressurized or pressurized draw load when edurance beding strength and its
Durability；
2）Test basis can be provided for research furnature construction node strength performance and Strain Distribution, for furniture new material high intensity
The research and development of joining technique, the research of furniture Whole Structure Optimation Design technology have important theory directive significance and practical application
It is worth；
3）1 group or multigroup loading unit can be configured as needed, to adapt to test while varying number test specimen, test test specimen can
To be two-dimentional fastener, three-dimensional fastener or two-dimentional bool etc., its section can be square circular or oval etc..
Brief description
Fig. 1 is a kind of partial structural diagram of furnature construction node edurance beding strength test device.
Fig. 2 is the structural representation of pressure loading head 15.It may be installed the lower end of pull pressure sensor 5, with pressure
Loading head 6 is replaced and is used, and realizes a pressure one respectively and draws cyclic loading test and pressurized circulation load test.
Fig. 3 is overall structure and the test specimen installation clamping schematic diagram of the present invention.1 group or multigroup loading can be configured as needed
Unit, to adapt to test while varying number test specimen；Computer control system 16 can be arranged on workbench 1 by turning arm
Above it is also possible to the form split of independent operation bench is arranged；Test specimen 17 is arranged in specimen holder mechanism 7 and is clamped, in case
Only test specimen rocks, tilts or rotates；6 pairs of test specimens of pressure-loaded 17 carry out pressurized circulation load test.
Fig. 4 is applicable furnature construction specimen joints example.Test specimen 17 can be two-dimentional fastener, three-dimensional fastener or two
Dimension bool etc., its section can be square, circular or oval etc..
The 1 of in figure is displacement transducer, 2 is guide post, 3 is cylinder, 4 is horizontal stand, 5 is pull pressure sensor, 6 is
Pressure-loaded head, 7 be specimen holder mechanism, 8 be machine frame, 9 be a point regulating valve, 10 be total pressure regulator valve, 11 be stationary platen, 12
It is column, 13 be horizontal stand height adjusting screw rod, 14 be bracing frame, 15 be pressure loading head, 16 be computer controls system
Unite, 17 is test specimen.
Specific embodiment
A kind of furnature construction node edurance beding strength test device, its structure includes workbench, loading unit and calculating
Column 12 in machine control system, wherein loading unit and specimen holder mechanism 7 are all separately mounted to the fixed station in workbench
On plate 11, and carry out installation, regulation and the locking of position respectively by the vertical or horizontal dovetail grooved rail on stationary platen 11, and
Realize the clamping to test specimen 17 and loading；Computer control system 16 is installed on the table by turning arm, adds for manipulation
Carrier unit.
The workbench of described device：Including machine frame 8, stationary platen 11 and bracing frame 14, wherein stationary platen 11 He
Bracing frame 14 is arranged on machine frame 8.
The loading unit of described device：Pass including displacement transducer 1, guide post 2, cylinder 3, horizontal stand 4, pressure
Sensor 5, pressure-loaded 6（Or pressure loading head 15）, specimen holder mechanism 7, column 12, horizontal stand height adjusting screw rod
13rd, divide regulating valve 9 and total pressure regulator valve 10, realize the clamping to furnature construction specimen joints 17 and loading, wherein displacement transducer
1st, guide post 2, cylinder 3, pull pressure sensor 5 are all arranged on horizontal stand 4；Horizontal stand 4 is arranged on column 12, and leads to
Overregulate screw rod 13 and enter line height regulation；Column 12 and specimen holder mechanism 7 are all separately mounted on stationary platen 11, and respectively
Carry out installation, regulation and the locking of position by the vertical or horizontal dovetail grooved rail on stationary platen 11；Pull pressure sensor 5
Lower end can be locked and be connected two replaceable independent pressure-loaded 6 using or pressure loading head 15, realize pressurization respectively and follow
Ring load test and a pressure one draw cyclic loading test, and pull pressure sensor 5 is used for the data message of conduction and feedback loading power；
Cylinder 3 realizes pressure-loaded 6 or the reciprocating linear sliding of pressure loading head 15；Pressure-loaded 6 realized by displacement transducer 1
Or the Real-time Feedback of pressure loading head 15 position, it is easy to record test piece deformation or damaged condition；Loading unit can be 1 group or
Multigroup, to adapt to test while varying number test specimen；Test test specimen can be two-dimentional fastener or three-dimensional fastener, its section
Can be square circular or oval.
The computer control system 16 of described device：Including computer display screen, control software, signal amplifier, data
Capture card etc., is arranged on workbench 1 by turning arm, for manipulating loading unit, realizes input load mode, specifies load
Lotus, observation sensor values, design halt mode, the acquisition process of test period data, graph making function, realize experiment
Personnel are to the accurate manipulation testing links and monitor in real time.
Its method of testing, comprises the steps：
（1）Install and clamping test specimen；
（2）Install and adjust loading head；
（3）Set force value and carry out CYCLIC LOADING；
（4）Load test is automatically controlled and processed by computer control system.
Described step（1）Install and clamping test specimen：Determine species and the test request of furnature construction node to be measured, determine
Loading position, furnature construction specimen joints 17 to be measured is arranged in specimen holder mechanism 7, by specimen holder mechanism 7
Test specimen is clamped by screw rod and fixture, to prevent test specimen from rocking, to tilt or rotate.
Described step（2）Install and adjust loading head：Adjust the height of horizontal stand 4 by column 12 and adjusting screw rod 13
Degree and front and back position；Displacement displacement transducer 1, guide post 2, cylinder 3, pull pressure sensor 5 are arranged on horizontal stand 4 and specify
Position；Draw the test request selection pressure loading head respectively of cyclic loading test according to pressurized circulation load test or a pressure one
6 or the type of pressure loading head 15, be installed in the lower end of pull pressure sensor 5 and lock, and make pressure-loaded 6 or
Pressure loading head 15 and the assigned position being maintained at same vertical line by loading point of test specimen 17.
Described step（3）Set force value and carry out CYCLIC LOADING：By total pressure regulator valve 10, point regulating valve 9 and pressure
Sensor 5, and destroy the settings such as criterion according to testing experiment load mode, loading frequency, loading duration, test specimen
Force value requires to adjust loading force, is circulated loading to test specimen 17, and by displacement transducer 1 and computer control system 16 difference
Record deformation displacement numerical value and test number (TN).
Described step（4）Load test is automatically controlled and processed by computer control system：Whole load test process
Automatically controlled by computer control system 16, data processing, monitor in real time, show in real time；Control system can calculate and export knot
Really, by the load applying according to default output form, automatic output numerical value and the corresponding chart of drafting；Reach when test specimen 17 damages
The damaged condition of setting is that the deformation displacement numerical value of displacement transducer 1 record exceedes certain limit, or test reaches regulation test
After number of times, load test can autostop.
Comparison Fig. 1, is a kind of partial structural diagram of furnature construction node edurance beding strength test device, loads single
The displacement transducer 1 of unit, guide post 2, cylinder 3 are all arranged on horizontal stand 4；Horizontal stand 4 is arranged on column 12, and leads to
Overregulate screw rod 13 and enter line height regulation；Column 12 and specimen holder mechanism 7 are all separately mounted to the stationary platen 11 of workbench
On, and carry out installation, regulation and the locking of position respectively by the vertical or horizontal dovetail grooved rail on stationary platen 11；Test specimen presss from both sides
Hold mechanism 7 for the clamping to test specimen 17；Pull pressure sensor 5 upper end is connected with cylinder 3, and lower end locking connects pressure-loaded head
6, realize pressurized circulation load test, and the data message for conduction and feedback loading power；Loading unit can be 1 group or many
Group, to adapt to test while varying number test specimen；Point regulating valve 9, total pressure regulator valve 10, stationary platen 11 and bracing frame 14 are installed
On machine frame 8.
Comparison Fig. 2, is the structural representation of pressure loading head 15, it may be installed the lower end of pull pressure sensor 5, with
Pressure-loaded 6 is replaced to be independently operated, and is realized a pressure one respectively and draw cyclic loading test and pressurized circulation load test.
Comparison Fig. 3, is that clamping schematic diagram installed by overall structure and the test specimen of the present invention.1 group or many can be configured as needed
Group loading unit, to adapt to test while varying number test specimen；Computer control system 16 can be arranged on work by turning arm
It is also possible to the form split of independent operation bench is arranged in station 1；Test specimen 17 is arranged in specimen holder mechanism 7 and is clamped,
To prevent test specimen from rocking, to tilt or rotate；6 pairs of test specimens of pressure-loaded 17 carry out pressurized circulation load test.
Comparison Fig. 4, is applicable furnature construction specimen joints example, and test specimen 17 can be two-dimentional fastener, three-dimensional joint
Part or two-dimentional bool etc., its section can be square, circular or oval etc..
Claims (9)
1. a kind of furnature construction node edurance beding strength test device, it is characterized in that structure include workbench, loading unit and
Column in computer control system, wherein loading unit and specimen holder mechanism are separately mounted to the stationary platen in workbench
On, and carry out installation, regulation and the locking of position respectively by the vertical or horizontal dovetail grooved rail on stationary platen, and realize right
The clamping of test specimen and loading；Computer control system is installed on the table by turning arm, for manipulating loading unit.
2. a kind of furnature construction node edurance beding strength test device according to claim 1, is characterized in that described
The workbench of device：It is arranged on machine frame including machine frame, stationary platen and bracing frame, wherein stationary platen and bracing frame.
3. a kind of furnature construction node edurance beding strength test device according to claim 1, is characterized in that described
Loading unit：Including displacement transducer, guide post, cylinder, horizontal stand, pull pressure sensor, pressure-loaded head or pressure
Loading head, specimen holder mechanism, column, horizontal stand height adjusting screw rod, point regulating valve and total pressure regulator valve, realize family is signed an undertaking
The clamping of structure specimen joints and loading, wherein displacement transducer, guide post, cylinder, pull pressure sensor are all arranged on level and prop up
On frame；Horizontal stand is arranged on column, and enters line height regulation by adjusting screw rod；Column and specimen holder mechanism are all distinguished
It is arranged on stationary platen, and respectively the installation of position, regulation are carried out by the vertical or horizontal dovetail grooved rail on stationary platen
And locking；The lower end of pull pressure sensor can be locked and be connected two replaceable independent pressure-loaded heads using or pressure loading
Head, realizes pressurized circulation load test respectively and a pressure one draws cyclic loading test, and pull pressure sensor is used for conduction and feedback
The data message of loading force；Cylinder realizes the reciprocating linear sliding of pressure-loaded head or pressure loading head；Displacement transducer is real
Existing pressure-loaded head or the Real-time Feedback of pressure loading head position, are easy to record test piece deformation or damaged condition；Loading unit
It it is 1 group or multigroup, to adapt to test while varying number test specimen；Test test specimen is two-dimentional fastener or three-dimensional fastener, its
Section is square circular or oval.
4. a kind of furnature construction node edurance beding strength test device according to claim 1, is characterized in that described
Computer control system：Including computer display screen, control software, signal amplifier, data collecting card, it is arranged on by turning arm
On workbench, for manipulating loading unit, realize input load mode, specify load, observe sensor values, design shutdown side
Formula, the acquisition process of test period data, graph making function, realize the accurate manipulation to test links for the experimenter
And monitor in real time.
5. use the method for testing of furnature construction node edurance beding strength test device as claimed in claim 1, its feature
It is to comprise the steps：
（1）Install and clamping test specimen；
（2）Install and adjust loading head；
（3）Set force value and carry out CYCLIC LOADING；
（4）Load test is automatically controlled and processed by computer control system.
6. the method for testing of furnature construction node edurance beding strength test device according to claim 5, is characterized in that
Described step（1）Install and clamping test specimen：Determine species and the test request of furnature construction node to be measured, determine and load position
Put, furnature construction specimen joints to be measured are arranged in specimen holder mechanism, by the screw rod in specimen holder mechanism and fixture
Test specimen is clamped, to prevent test specimen from rocking, to tilt or rotate.
7. the method for testing of furnature construction node edurance beding strength test device according to claim 5, is characterized in that
Described step（2）Install and adjust loading head：Adjust height and the front and back position of horizontal stand by column and adjusting screw rod；
Displacement displacement transducer, guide post, cylinder, pull pressure sensor are arranged on the position that horizontal stand specifies；Followed according to pressurization
Ring load test or a pressure one draw the test request of cyclic loading test respectively selection pressure loading head or pressure loading head
Type, is installed in the lower end of pull pressure sensor and locks, and makes pressure-loaded head or pressure loading head and test specimen
It is maintained at the assigned position of same vertical line by loading point.
8. the method for testing of furnature construction node edurance beding strength test device according to claim 5, is characterized in that
Described step（3）Set force value and carry out CYCLIC LOADING：By total pressure regulator valve, point regulating valve and pull pressure sensor, and press
Force value according to settings such as testing experiment load mode, loading frequency, loading duration, test specimen destruction criterion requires to adjust
Loading force, is circulated loading to test specimen, and records deformation displacement numerical value respectively by displacement transducer and computer control system
And test number (TN).
9. the method for testing of furnature construction node edurance beding strength test device according to claim 5, is characterized in that
Described step（4）Load test is automatically controlled and processed by computer control system：Whole load test process is by computer
Control system automatically controls, data processing, monitor in real time, show in real time；Control system can calculate and output result, by apply
Load is according to default output form, automatic output numerical value and the corresponding chart of drafting；When test specimen damages the damage journey reaching setting
After degree is that the deformation displacement numerical value of displacement transducer record exceedes prescribed limit, or test reaches regulation test number (TN), load examination
Testing can autostop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903337.2A CN106441968B (en) | 2016-10-18 | 2016-10-18 | Furniture structure node bending fatigue strength testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610903337.2A CN106441968B (en) | 2016-10-18 | 2016-10-18 | Furniture structure node bending fatigue strength testing device and testing method |
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| CN106441968A true CN106441968A (en) | 2017-02-22 |
| CN106441968B CN106441968B (en) | 2020-01-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989941A (en) * | 2017-03-30 | 2017-07-28 | 中车青岛四方车辆研究所有限公司 | Car lifting J-Horner lift unit load test TT＆C system and method |
| CN113640159A (en) * | 2021-08-24 | 2021-11-12 | 安徽省汉博科技有限公司 | Fatigue strength testing device for furniture node joint |
| CN113640030A (en) * | 2021-08-25 | 2021-11-12 | 安徽省汉博科技有限公司 | Strength testing device and method for furniture |
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|---|---|---|---|---|
| CN106989941A (en) * | 2017-03-30 | 2017-07-28 | 中车青岛四方车辆研究所有限公司 | Car lifting J-Horner lift unit load test TT＆C system and method |
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| CN113640030A (en) * | 2021-08-25 | 2021-11-12 | 安徽省汉博科技有限公司 | Strength testing device and method for furniture |
| CN113640030B (en) * | 2021-08-25 | 2023-11-14 | 安徽省汉博科技有限公司 | Intensity testing device and method for furniture |
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| CN106441968B (en) | 2020-01-10 |
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Application publication date: 20170222 Assignee: Shanghai Kuanhong Metal Products Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020980008964 Denomination of invention: A device and method for testing bending fatigue strength of furniture structural joints Granted publication date: 20200110 License type: Common License Record date: 20201209 Application publication date: 20170222 Assignee: Shanghai Baiheng Office Furniture Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020980008922 Denomination of invention: A device and method for testing bending fatigue strength of furniture structural joints Granted publication date: 20200110 License type: Common License Record date: 20201207 |
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Effective date of registration: 20211208 Address after: 210000 floor 6, block a, Kechuang building, Huizhi Industrial Park, Lishui Economic Development Zone, Nanjing, Jiangsu Province Patentee after: Nanjing moqiao Technology Development Co.,Ltd. Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: NANJING FORESTRY University |