CN103076196B - Device for testing mechanical property of shelf base combination - Google Patents
Device for testing mechanical property of shelf base combination Download PDFInfo
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- CN103076196B CN103076196B CN201310005648.3A CN201310005648A CN103076196B CN 103076196 B CN103076196 B CN 103076196B CN 201310005648 A CN201310005648 A CN 201310005648A CN 103076196 B CN103076196 B CN 103076196B
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- base combination
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- hydraulic cylinder
- concrete block
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Abstract
The invention provides a device for testing the mechanical property of a shelf base combination. The device comprises a concrete block, wherein the bottom of the concrete block is arranged on a support base through a rolling support mechanism; a left base combination and a right base combination are symmetrically arranged on the left side and the right side of the concrete block respectively; the right base combination is connected with a back baffle plate through a right hinge; the left base combination is connected with one side of an I-shaped slide block through a left hinge; the other side of the I-shaped slide block is connected with a first hydraulic cylinder fixing baffle plate through a first hydraulic cylinder; the front and back sides of the concrete blocks are provided with a second hydraulic cylinder and a third hydraulic cylinder respectively; eight displacement sensors are uniformly arranged around the concrete block; and three hydraulic cylinders are provided with a weighing sensor respectively. Due to the adoption of the device provided by the invention, the defects of the prior art are overcome, factors on every aspect influencing testing of the shelf base combination are considered fully, the reliability and the accuracy of test data are ensured during testing, and foundations are laid for the improvement on the stability and the reliability of a shelf.
Description
Technical field
The present invention relates to a kind of shelf base combination Mechanics Performance Testing device, belong to connector for goods shelf mechanical property field of measuring technique.
Background technology
Storage rack, as one of storage facilities the most basic in logistics link, all has a wide range of applications in all trades and professions such as manufacturing industry, logistics center, tobacco, medicine, business, electromechanics.It is not only is the important component part in modernization warehouse, and is the important component part of modern logistics center, home-delivery center.
Shelf steel structure of a great variety, according to different needs, can be divided into Assembled storage rack, monoblock type shelf and storehouse frame Integral type shelf three class substantially.Because it has the features such as easy to assembly, flexible form, usable range are wide, Assembled storage rack application is the most general.For ease of being connected with basis, shelf steel structure column bottom of being everlasting connects a base plate, the base combination of composition shelf, and the load that guard frame rail and column bear by it finally passes on floor, is that shelf are installed and the basis of carrying.The connection of shelf base combination is made up of column and base plate two-part structure, adopt welding or mechanical connection between the two, base plate is connected with floor by certain connected mode again, and the bearing capacity of different connected mode columns and the performance of whole shelf all have a certain impact.
Base combination node has semi-rigid feature, and it is one of key position of shelf design consideration, and its security will directly affect the serviceability of shelf entirety.Connection due to base has the features such as non-linear and rigidity discreteness, is difficult to theoretically derive, therefore usually need determine the performance of its entirety by means of corresponding test, but the document of domestic shelf base reliability consideration is very few.At present, along with the development of pallet technology, enterprise produces for shelf higher standard, and in order to produce, stability is high in domestic manufacturer, long service life, shelf that security is good, easily manufactured, just must determine the semi-rigid parameter of base combination and deformation form thereof by test.
At present, the domestic device also not having shelf base combination Mechanics Performance Testing special.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shelf base combination Mechanics Performance Testing device, to improve stability and the reliability of shelf.
In order to solve above-mentioned first technical matters, technical scheme of the present invention is to provide a kind of shelf base combination Mechanics Performance Testing device, it is characterized in that: comprise concrete block, be located on base for supporting by rolling supporting mechanism bottom concrete block, left base combination and right base combination are symmetrically set in the left and right sides of concrete block respectively; Right base combination is connected with backboard by right hinge, and backboard is located on base for supporting; Left base combination is connected with " I shape " slide block side by left hinge, and " I shape " slide block opposite side connects the first hydraulic cylinder fixed dam by the first hydraulic cylinder, and the first hydraulic cylinder fixed dam is located on base for supporting; " I shape " slider bottom is located on base for supporting by roller supporting mechanism;
The both sides, front and back of concrete block are respectively equipped with the second hydraulic cylinder and the 3rd hydraulic cylinder, first hydraulic cylinder, the second hydraulic cylinder and the 3rd hydraulic cylinder are located on base for supporting respectively by a pair first support fixtures, the second support fixture and the 3rd support fixtures, and the outside of the second hydraulic cylinder and the 3rd hydraulic cylinder is equipped with hydraulic cylinder fixed dam;
The column of left base combination, right base combination is equipped with measurement sheet near base plate one end, and 8 displacement transducers are respectively located on base for supporting by a clamp of sensor; Wherein, measure sheet upper pillar stand both sides for two and be respectively connected with a displacement transducer head, before and after concrete block, two sides are respectively connected with two displacement transducer heads;
First LOAD CELLS is located between left hinge and " I shape " slide block, is supported be connected with roller supporting mechanism below the first LOAD CELLS by the first LOAD CELLS; Second LOAD CELLS and the 3rd LOAD CELLS are located at both sides before and after concrete block respectively, and the second LOAD CELLS is connected with rolling supporting mechanism with respectively being supported by second LOAD CELLS below the 3rd LOAD CELLS.
Preferably, four rolling is provided with bottom described rolling supporting mechanism.
Preferably, described left base combination and described right base combination include the column that a segment length is no more than 600mm, and column two ends are respectively equipped with base plate and welding plate; Column one end of described left base combination, described right base combination is connected with the back up pad of described left hinge, described right hinge respectively by welding plate, and the column other end of described left base combination, described right base combination is all connected with described concrete block by base plate.
Preferably, described roller supporting actuator base is provided with two rollers.
Preferably, the both sides, front and back of described " I shape " slide block are equipped with side shield, and side shield is provided with the chute guiding described " I shape " slide block moving direction.
Preferably, the grade of compressive strength of described concrete block is not less than 16/20.
Preferably, the left and right sides of described concrete block are provided with concrete block fixture.
Preferably, two pieces of fixed heads identical sized by described concrete block fixture, the upper and lower edge of fixed head is justified margin upper and lower with described concrete block respectively.
Preferably, described base for supporting surface is smooth plane.
When a kind of shelf base combination Mechanics Performance Testing device provided by the invention uses, initial second hydraulic cylinder and the 3rd hydraulic cylinder are idle, and make the first hydraulic cylinder apply to be equivalent to the load of exemplar rated load 20%.When concrete block has any trend departing from test unit center line, displacement transducer will this trend of perception being recorded, judge that in the second hydraulic cylinder and the 3rd hydraulic cylinder, which plays a role according to offset direction, make the hydraulic cylinder played a role produce the acting force with above-mentioned movement tendency equidirectional.The load acting on the first hydraulic cylinder is reduced to a rating number again, and this rating number makes all member contact in device, and all the sensors also can recover clean state.Then, the load on the first hydraulic cylinder rises to a certain specified value and can keep this numerical value always, and its size can be 0.25F
s, 0.5F
s, 0.75F
s, 1.0F
s; The load of the hydraulic cylinder simultaneously played a role can slowly increase, until its load reaches a certain numerical value, till making left base combination and/or right base combination generation damage inactivation.In this process, all the sensors also carries out data acquisition together with step.
Device provided by the invention overcomes the deficiencies in the prior art, consider each side factor affecting shelf base combination test comprehensively, can scientifically obtain the indices affecting shelf base combination mechanical property, ensure that fiduciary level and the degree of accuracy of test data during test, for the stability and reliability improving shelf provides the foundation.
Accompanying drawing explanation
Fig. 1 is a kind of shelf base combination Mechanics Performance Testing device schematic diagram provided by the invention;
Fig. 2 is a kind of shelf base combination Mechanics Performance Testing device total arrangement provided by the invention schematic diagram;
Fig. 3 is displacement transducer schematic layout pattern;
Fig. 4 is the roller supporting mechanism section schematic layout pattern of " I shape " slide block;
Fig. 5 is the rolling supporting mechanism section layout schematic diagram of concrete block;
Description of reference numerals
1-first hydraulic cylinder fixed dam; 2-first hydraulic cylinder; 3-" I shape " slide block; 4-first LOAD CELLS; 5-first support fixture; 6-side shield; The left base combination of 7-; 8-second LOAD CELLS; 9-concrete block fixture; 10-concrete block; 11-the 3rd hydraulic cylinder; 12-hydraulic cylinder fixed dam; 13-the 3rd support fixture; The right base combination of 14-; The right hinge of 15-; 16-backboard; 17-displacement transducer; 18-clamp of sensor; 19-rolling supporting mechanism; 20-second support fixture; 21-second hydraulic cylinder; 22-base for supporting; The left hinge of 23-; 24-roller supporting mechanism; 25-first LOAD CELLS supports; 26-measures sheet; 27-the 3rd LOAD CELLS; 28-second LOAD CELLS supports.
Embodiment
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is a kind of shelf base combination Mechanics Performance Testing device schematic diagram provided by the invention, and described a kind of shelf base combination Mechanics Performance Testing device is made up of basic machine unit, hydraulic control unit and performance monitoring unit.
The layout type of basic machine unit accurately can simulate the real conditions that shelf base combination is connected with ground.It comprises concrete block 10, and left base combination 7 and right base combination 14 be the symmetrical left and right sides being contained in concrete block 10 respectively.Left base combination 7 and right base combination 14 are no more than the column of 600mm, base plate and welding plate composition by a segment length, column one end of left base combination 7, right base combination 14 is connected to by welding plate in the back up pad of left hinge 23, right hinge 15, and the column other end is connected to by base plate and is equivalent on the concrete block 10 of floor surface.Composition graphs 5, is connected with rolling supporting mechanism 19 bottom concrete block 10, and rolling supporting mechanism 19 is placed on base for supporting 22.Rolling supporting mechanism 19 comprises four rolling, makes concrete block 10 move freely along side surface direction in surface level and to avoid it around vertical rotation.
Wherein left base combination 7 and right base combination 14 have employed symmetric configuration's method, better can reflect the performance characteristics of base combination like this.But the layout at two ends, device left and right is different, right base combination 14 is connected with backboard 16 by right hinge 15, and backboard 16 is fixed on base for supporting 22; And left base combination 7 is connected with " I shape " slide block 3 side by left hinge 23, " I shape " slide block 3 opposite side connects the first hydraulic cylinder fixed dam 1, the first hydraulic cylinder fixed dam 1 by the first hydraulic cylinder 2 and is fixed on base for supporting 22.Composition graphs 4, be installed with roller supporting mechanism 24 bottom " I shape " slide block 3, roller supporting mechanism 24 is placed on base for supporting 22.Roller supporting mechanism 24 comprises two rollers, can move forward in surface level, and " I shape " slide block 3 can be moved along with the flexible of the first hydraulic cylinder 2; Simultaneously, in order to prevent when applying power load, roller is sideslip due to unbalance loading, two side shields 6 are secured in the both sides, front and back of " I shape " slide block 3, side shield 6 is processed with chute, the good moving direction having guided " I shape " slide block 3, makes it be unlikely in axial direction to produce skew.
In addition, in order to improve the accuracy of test, require that left hinge 23, right hinge 15 can rotate by the direction of regulation, therefore the welding plate of column one end of left base combination 7, right base combination 14 is connected with left hinge 23, right hinge 15 respectively by bolt.
Concrete block 10 is used for the floor in simulating stereo warehouse, and compressive strength is just equivalent to the intensity on actual floor, and its strength grade is necessary for more than 16/20.As long as it is specifically intended that test condition accurately can reflect physical condition, so also without concrete block, and the other materials that can be equivalent to real floor can be used instead in experiment.In addition, concrete block may damage under the effect of applying larger intensity load, therefore, at two pieces of fixed heads that the left and right sides thru-bolt fixed size of concrete block is identical, as concrete block fixture 9, and when arranging fixed head, fixed head lower edges be made to align with concrete block lower edges respectively.
Hydraulic control unit comprises the first hydraulic cylinder 2, second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11, its concrete arrangement is: the both sides, front and back of concrete block 10 are equipped with the second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11 respectively, only have a hydraulic cylinder to play a role at the trial; " I shape " slide block 3 opposite side arranges first hydraulic cylinder 2.First hydraulic cylinder 2, second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11 are fixed on base for supporting 22 respectively by a pair first support fixture 5, second support fixtures 20 and the 3rd support fixture 13, and hydraulic cylinder fixed dam 12 is all equipped with in the outside of the second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11.This layout type can real simulation base actual loading situation.
The clamp system that first support fixture 5, second support fixture 20 and the 3rd support fixture 13 are all made up of two semicircle fixtures, realizes clamping by bolt.This mechanism extremely facilitates the handling of hydraulic cylinder, two, bottom supporting leg both ensure that the stability of support, in turn simplify material, and can slot on ground, make hydraulic cylinder can adjust installation site flexibly, meet the installation requirement of length base combination devious.
Performance monitoring unit, it is primarily of the sensor such as displacement, power and the composition such as data collecting card, mounting bracket thereof, the node rotation and the base that it is characterized in that obtaining base bear the data such as pressure, for data processing and quantitative analysis provide science test figure accurately simultaneously.Composition graphs 2, the column of left base combination 7, right base combination 14 is all equipped with near base plate one end measures sheet 26, and composition graphs 3,8 displacement transducers 17 are respectively fixed on base for supporting 22 by a clamp of sensor 18, are symmetrically arranged in concrete block 10 surrounding.Wherein, measure sheet 26 upper pillar stand both sides for two and be respectively connected with displacement transducer 17 head, totally 4, in order to the deformation of the corner value and column of measuring concrete block 10.Before and after concrete block 10, two sides are respectively connected with two displacement transducer 17 heads.
First LOAD CELLS 4 is arranged between left hinge 23 and " I shape " slide block 3, is provided with the first LOAD CELLS and supports 25, be mainly used to the power magnitude of load of measurement first hydraulic cylinder 2 below it; Second LOAD CELLS 8 and the 3rd LOAD CELLS 27 are arranged on both sides before and after on concrete block 10 respectively, below is all supported by the second LOAD CELLS and 28 to be connected with rolling supporting mechanism 19, is used for the power magnitude of load of measurement second hydraulic cylinder the 21, the 3rd hydraulic cylinder 11 respectively.
Simultaneously, the horizontal shift of concrete block 10 and the angular displacement relative to column better can be obtained in order to make displacement transducer 17, rolling supporting mechanism 19 bottom concrete block 10 must be placed in more smooth plane, namely requires that base for supporting 22 surface is smooth plane.
The main process that a kind of shelf base combination Mechanics Performance Testing device provided by the invention of sampling carries out base combination mechanical property test is as follows:
(1) initial second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11 are idle, and make the first hydraulic cylinder 2 apply to be equivalent to the load of exemplar rated load 20%.
(2) when concrete block 10 has any trend departing from test unit center line, displacement transducer 17 will this trend of perception being recorded, judge that in the second hydraulic cylinder 21 and the 3rd hydraulic cylinder 11, which plays a role according to offset direction, make the hydraulic cylinder played a role produce the acting force with above-mentioned movement tendency equidirectional.
(3) load acting on the first hydraulic cylinder 2 is reduced to a rating number again, and this rating number makes all member contact in device, and all the sensors also can recover clean state.
(4) then, the load on the first hydraulic cylinder 2 rises to a certain specified value and can keep this numerical value always, and its size can be 0.25F
s, 0.5F
s, 0.75F
s, 1.0F
s(F herein
srepresent the rated load of column); The load of the hydraulic cylinder that plays a role simultaneously in step 2 can slowly increase, until its load reaches a certain numerical value, till making left base combination 7 and/or right base combination 14 that damage inactivation occur.In this step process of the test, all the sensors also carries out data acquisition together with step.
Analytical calculation process is carried out to data, draws moment-angle Curve, calculate rigidity and other desired values, obtain the performance test form of base node.
A kind of shelf base combination Mechanics Performance Testing device provided by the invention has following distinguishing feature:
1. complete series base combination test: this test platform have employed flexible legs clamping mechanism, and structural design has taken into full account modular construction feature, meets the test needs of complete series base combination part.Especially carry out crooked test to shelf base combination node, the shelf base combination node Mechanics Performance Testing form generated after test, can accurately show indices value.Therefore, this proving installation is applicable to the Mechanics Performance Testing of multi-series base combination part.
3. the quantitative analysis of shelf base combination node failure form: this proving installation have employed special sensor placement's method, the deformation of column and base plate accurately can be measured in shelf base combination destruction of a node process, for the quantitative analysis of base combination node failure form and research provide reliable data, make up current in the world can only the defect of qualitative analysis.
4. high-accuracy test: this proving installation is owing to employing precision higher a series of exact instrument and special sensor placement's method such as LVDT displacement transducer, force snesor, the measuring accuracy of shelf base node is significantly improved, the precision measurement of high-quality shelf base combination node can be realized.
The present invention is tested by the mechanical property of base combination joint behavior proving installation to the connector for goods shelf of different size and is compared, and finds out the influence factor of connector for goods shelf mechanical property, thus proposes the measure improving shelf reliability production technology.Shelf base combination Mechanics Performance Testing device, by promoting the formation of the deep of shelf reliability design research and relevant criterion, has filled up the technological gap in this field.
Claims (9)
1. a base combination joint behavior proving installation, it is characterized in that: comprise concrete block (10), concrete block (10) bottom is located on base for supporting (22) by rolling supporting mechanism (19), and left base combination (7) and right base combination (14) are symmetrically set in the left and right sides of concrete block (10) respectively; Right base combination (14) is connected with backboard (16) by right hinge (15), and backboard (16) is located on base for supporting (22); Left base combination (7) is connected with " I shape " slide block (3) side by left hinge (23), " I shape " slide block (3) opposite side connects the first hydraulic cylinder fixed dam (1) by the first hydraulic cylinder (2), and the first hydraulic cylinder fixed dam (1) is located on base for supporting (22); " I shape " slide block (3) bottom is located on base for supporting (22) by roller supporting mechanism (24);
The both sides, front and back of concrete block (10) are respectively equipped with the second hydraulic cylinder (21) and the 3rd hydraulic cylinder (11), first hydraulic cylinder (2), the second hydraulic cylinder (21) and the 3rd hydraulic cylinder (11) are located on base for supporting (22) respectively by a pair first support fixtures (5), the second support fixture (20) and the 3rd support fixtures (13), and the outside of the second hydraulic cylinder (21) and the 3rd hydraulic cylinder (11) is equipped with hydraulic cylinder fixed dam (12);
Described left base combination (7) and described right base combination (14) include the column that a segment length is no more than 600mm, and column two ends are respectively equipped with base plate and welding plate; The column of left base combination (7), right base combination (14) is equipped with near base plate one end measures sheet (26), and 8 displacement transducers (17) are respectively located on base for supporting (22) by a clamp of sensor (18); Wherein, two parts being positioned at column both sides measuring each measurement sheet in sheet (26) are connected with displacement transducer (17) head respectively, and before and after concrete block (10), two sides are respectively connected with two displacement transducer (17) heads;
First LOAD CELLS (4) is located between left hinge (23) and " I shape " slide block (3), and the first LOAD CELLS (4) below supports (25) by the first LOAD CELLS and is connected with roller supporting mechanism (24); Second LOAD CELLS (8) and the 3rd LOAD CELLS (27) are located at both sides before and after concrete block (10) respectively, and the second LOAD CELLS (8) respectively supports (28) by second LOAD CELLS with the 3rd LOAD CELLS (27) below and is connected with rolling supporting mechanism (19).
2. a kind of base combination joint behavior proving installation as claimed in claim 1, is characterized in that: described rolling supporting mechanism (19) bottom is provided with four rolling.
3. a kind of base combination joint behavior proving installation as claimed in claim 1, it is characterized in that: column one end of described left base combination (7), described right base combination (14) is connected with the back up pad of described left hinge (23), described right hinge (15) respectively by welding plate, and the column other end of described left base combination (7), described right base combination (14) is all connected with described concrete block (10) by base plate.
4. a kind of base combination joint behavior proving installation as claimed in claim 1, is characterized in that: described roller supporting mechanism (24) bottom is provided with two rollers.
5. a kind of base combination joint behavior proving installation as claimed in claim 1, it is characterized in that: the both sides, front and back of described " I shape " slide block (3) are equipped with side shield (6), side shield (6) is provided with the chute guiding described " I shape " slide block (3) moving direction.
6. a kind of base combination joint behavior proving installation as claimed in claim 1, is characterized in that: the grade of compressive strength of described concrete block (10) is not less than 16/20.
7. a kind of base combination joint behavior proving installation as described in claim 1 or 6, is characterized in that: the left and right sides of described concrete block (10) are provided with concrete block fixture (9).
8. a kind of base combination joint behavior proving installation as claimed in claim 7, it is characterized in that: two pieces of fixed heads identical sized by described concrete block fixture (9), the upper and lower edge of fixed head respectively with described concrete block (10) upper and lower justified margin.
9. a kind of base combination joint behavior proving installation as claimed in claim 1, is characterized in that: described base for supporting (22) surface is smooth plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310005648.3A CN103076196B (en) | 2013-01-08 | 2013-01-08 | Device for testing mechanical property of shelf base combination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310005648.3A CN103076196B (en) | 2013-01-08 | 2013-01-08 | Device for testing mechanical property of shelf base combination |
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| CN103076196A CN103076196A (en) | 2013-05-01 |
| CN103076196B true CN103076196B (en) | 2015-04-08 |
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| CN201310005648.3A Expired - Fee Related CN103076196B (en) | 2013-01-08 | 2013-01-08 | Device for testing mechanical property of shelf base combination |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376233B (en) * | 2013-07-05 | 2016-02-10 | 上海交通大学 | Composite material C-type beam R angular displacement detection and prestress application experiment table |
| CN107167623B (en) * | 2017-05-22 | 2021-11-26 | 杭州集普科技有限公司 | Triaxial angular velocity sensor for automobile crash test |
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| JPH08122222A (en) * | 1994-10-21 | 1996-05-17 | Sakura Kogyo Kk | Product performance testing machine |
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Effective date of registration: 20191127 Address after: 201620 Shanghai, North Renmin Road, Songjiang District, No. 2999 Co-patentee after: Shanghai Jingxing Logistics Equipment Engineering Co., Ltd. Patentee after: Donghua University Address before: 201620 Shanghai, North Renmin Road, Songjiang District, No. 2999 Patentee before: Donghua University |
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Granted publication date: 20150408 Termination date: 20200108 |