CN114046971A - Device and method for comprehensively testing stability of industrial goods shelf stand column piece - Google Patents

Device and method for comprehensively testing stability of industrial goods shelf stand column piece Download PDF

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Publication number
CN114046971A
CN114046971A CN202111287158.8A CN202111287158A CN114046971A CN 114046971 A CN114046971 A CN 114046971A CN 202111287158 A CN202111287158 A CN 202111287158A CN 114046971 A CN114046971 A CN 114046971A
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China
Prior art keywords
side edge
column
sheet
upright post
clamp
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CN202111287158.8A
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Chinese (zh)
Inventor
吕志军
李陈民军
崔雄
杨光辉
管树林
张啸
赵培彩
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Shanghai Jingxing Storage Equipment Engineering Co ltd
Donghua University
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Shanghai Jingxing Storage Equipment Engineering Co ltd
Donghua University
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Priority to CN202111287158.8A priority Critical patent/CN114046971A/en
Publication of CN114046971A publication Critical patent/CN114046971A/en
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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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  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention relates to a device and a method for comprehensively testing the stability of an industrial goods shelf upright piece, which relate to the field of logistics storage automation and are arranged on the periphery of the upright piece and comprise a support frame, a first upright piece clamp, a second upright piece clamp, a load applying component, a baffle and a sensor; the supporting frame is arranged on the periphery of the upright piece and comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected; the first column piece clamp and the load applying assembly are arranged on the first side edge, and the first column piece clamp is arranged between the second side edge and the load applying assembly; the baffle is arranged on the second side edge; the second side edge and the fourth side edge are respectively provided with a slide rail, and the third side edge is arranged between the two slide rails; the second upright piece clamp is arranged on the third side edge; the sensor is arranged on the support frame. The method has the effect of conveniently testing the shearing performance and the compression resistance of the column piece so as to comprehensively evaluate the stability of the column piece.

Description

Device and method for comprehensively testing stability of industrial goods shelf stand column piece
Technical Field
The invention relates to the field of logistics storage automation, in particular to a device and a method for comprehensively testing stability of an industrial goods shelf stand column.
Background
The steel goods shelf system assembled by cold-formed steel is used for storing various important materials in industrial production, and the structural design of the goods shelf can directly influence the safety performance and the manufacturing cost of stereoscopic warehouse equipment.
The industrial goods shelf is generally assembled by a cross beam, upright columns and support rod pieces, wherein the upright column pieces mainly comprise two parallel upright columns and a plurality of flat inclined struts and are main bearing structures of the goods shelf; in addition, the upright piece can provide necessary anti-roll function for the industrial shelf system under the severe environments of earthquakes, hurricanes and the like.
The stability design of an industrial shelf usually needs to consider the ultimate bearing performance and the shearing performance of a column piece, but due to the complexity of the section model of the column and the diversity of the layout of a flat inclined strut member, the current industry lacks a general calculation and analysis method for the structural stability of the column piece, and the comprehensive mechanical performance of the structure needs to be verified by relying on a mechanical test under the common condition. Therefore, the test device and method capable of adapting to the tests of the compression resistance and the shearing performance of the upright column pieces with different specifications are designed, and the test device and method have important practical significance for guaranteeing the safety of the industrial shelf structure
Disclosure of Invention
The technical problem to be solved by the invention is as follows: due to the complexity of the section model of the upright column and the diversity of the layout of the flat diagonal bracing members, the current industry lacks a universal testing device and method for the structural stability of the upright column sheet.
In order to achieve the aim, the technical scheme of the invention provides a device for comprehensively testing the stability of an industrial goods shelf upright piece, which is arranged on the periphery of the upright piece and comprises a support frame, a first upright piece clamp, a second upright piece clamp, a load applying component, a baffle and a sensor; the supporting frame is arranged on the periphery of the upright piece and comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected; the first column piece clamp and the load applying assembly are arranged on the first side edge, and the first column piece clamp is arranged between the second side edge and the load applying assembly; the baffle is arranged on the second side edge; the second side edge and the fourth side edge are respectively provided with a slide rail, and the third side edge is arranged between the two slide rails; the second upright piece clamp is arranged on the third side edge; the sensor is arranged on the support frame.
Preferably, the baffle is detachably connected to the slide rail at the second side edge.
Preferably, a load sliding rail is arranged between the load applying component and the first side edge.
Preferably, the first column piece clamp and the second column piece clamp are respectively provided with a first clamping bolt and a second clamping bolt, and the first clamping bolt and the second clamping bolt are respectively used for adjusting the clamping thickness range of the first column piece clamp and the clamping thickness range of the second column piece clamp.
Preferably, the first column sheet clamp is detachably connected with the first side edge.
Preferably, the second column sheet clamp can be connected with the third side edge in a sliding mode.
Preferably, the first column piece holder and the second column piece holder are provided in plurality.
Preferably, the second side and the fourth side are parallel to each other, the two ends of the third side are fixedly connected with sliding blocks, and the two sliding blocks are connected with the sliding rail of the second side and the sliding rail of the fourth side in a sliding manner respectively.
Preferably, the first side edge and the third side edge are parallel to each other.
The invention also provides a method for testing by adopting the device for comprehensively testing the stability of the industrial goods shelf stand column sheet, wherein the stand column sheet comprises a first stand column and a second stand column which are parallel to each other;
the method for testing the shear stiffness of the column sheet comprises the following steps:
step 1, mounting a first upright post of an upright post sheet on a first upright post sheet clamp, mounting a second upright post of the upright post sheet on a second upright post sheet clamp, and enabling a baffle to abut against the end part of the second upright post;
step 2, applying a load to the end part of the first upright post through the load applying assembly;
step 3, recording load changes, and measuring displacement changes of the first stand column through a sensor;
step 4, calculating the slope k of the best fitting straight line of the collected load displacement data points in the whole range through a polynomial fitting methodti；
Step 5, calculating the transverse shear stiffness S of the column sheettiThe calculation formula is as follows:
Figure BDA0003333320000000031
wherein d is the size between the column centroids of the column pieces, and h is the height of the column pieces;
the method for testing the limit load of the column sheet comprises the following steps:
step 1, mounting a first upright post of an upright post sheet on a first upright post sheet clamp, mounting a second upright post of the upright post sheet on a second upright post sheet clamp, and enabling a baffle to abut against the end part of the first upright post;
step 2, applying a load to the end part of the first upright post through the load applying assembly;
step 3, observing the deformation condition of the column sheet, if the applied test load reaches the upper limit or the deformation amount causes that the column sheet cannot execute the design function, executing the next step, otherwise, returning to the previous step;
and 4, recording limit load data.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can adapt to the upright pieces with different heights and spans by moving the clamp and the guide rail; the bolts on the clamp can be adjusted, the clamping thickness range is changed to adapt to the stand columns with different section models, and the clamp is reliable in installation and positioning; the column sheet can be comprehensively tested for shearing performance and compressive resistance, so that comprehensive testing and evaluation of the anti-rolling performance and the ultimate bearing performance of the column sheet are realized.
Drawings
FIG. 1 is a schematic structural view of the present invention in testing the shear performance of a stud sheet;
FIG. 2 is a schematic view of a stationary fixture according to the present invention;
FIG. 3 is a top view of the structure of the present invention when testing the shear performance of a sheet of posts;
fig. 4 is a schematic structural view of the column piece in the invention when the compression resistance is tested.
Reference numerals: 1. a support frame; 2. a fixed clamp; 3. a baffle plate; 4. a first slide rail; 5. a guide rail; 6. a movable clamp; 7. a column sheet; 8. a slider; 9. an electric hydraulic ejector rod; 10. a second slide rail; 11. and a displacement sensor.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the present invention, terms such as "fixed", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The embodiment of the invention discloses a device and a method for comprehensively testing the stability of an industrial shelf upright piece.
The invention comprises a support frame 1, a plurality of clamps, a plurality of slide rails, a guide rail 5, a slide block 8, a baffle 3, an upright piece 7, an electric hydraulic ejector rod 9 and a displacement sensor 11.
One end of the support frame 1 in the width direction is used for arranging a fixed clamp 2, and the other end of the support frame in the width direction is provided with a guide rail 5; the two ends of the support frame 1 in the length direction are provided with first sliding rails 4, and the two first sliding rails 4 are horizontally and symmetrically arranged.
Baffle 3 is fixed on one of them first slide rail 4 to be located fixed anchor clamps 2 and keep away from electro-hydraulic ram 9 one side, baffle 3 mainly used restricts the axial displacement of the left stand or the right stand of stand piece 7. When the baffle 3 is fixed at the end part of the first slide rail 4 far away from the guide rail 5, the compression resistance test of the column sheet 7 can be carried out; when the baffle 3 is fixed at the position of the first slide rail 4 close to the guide rail 5, the shearing performance test of the column sheet 7 can be carried out.
In addition, the device also comprises a second slide rail 10, wherein the second slide rail 10 is arranged on the support frame 1, is close to the fixed fixture 2 and is parallel to the guide rail 5, and the second slide rail 10 is used for moving the electric hydraulic ejector rod 9; the slider 8 is all installed through the bolt in 5 both ends of guide rail, and guide rail 5 passes through slider 8 to be installed on first slide rail 4, but horizontal migration guide rail 5 adapts to the stand piece 7 of different spans.
Anchor clamps mainly include fixed anchor clamps 2 and portable anchor clamps 6, and fixed anchor clamps 2 and portable anchor clamps 6 mainly used centre gripping stand piece 7 make 7 horizontal installation of stand piece on fixed anchor clamps 2 and portable anchor clamps 6, and fixed anchor clamps 2 and portable anchor clamps 6 all can adjust the centre gripping scope.
The number of the fixed clamps 2 is two, a threaded hole is formed in the end part, close to the support frame 1, of each fixed clamp 2, and the fixed clamps 2 are fixed on the support frame 1 through bolts and used for limiting the buckling range of the left upright of the upright piece 7; the two movable clamps 6 are mounted on the guide rail 5, so that the buckling range of the right column of the vertical column piece 7 is limited, and the movable clamps 6 can move on the guide rail 5 to adapt to the column pieces 7 with different lengths. In addition, the fixed jig 2 and the movable jig 6 are respectively provided with a first clamping bolt and a second clamping bolt, which are respectively used for adjusting the clamping thickness ranges of the fixed jig 2 and the movable jig 6.
The electric hydraulic ejector rod 9 is arranged on the second slide rail 10 and is mainly used for applying load to the lower end base of the left upright post of the opposite post piece 7. When the device is used, the electro-hydraulic ejector rod 9 applies load to the base at the lower end of the left upright column, and the change of the load can be recorded.
When carrying out the shearing performance test, displacement sensor 11 installs in fixed anchor clamps 2 and keeps away from electronic hydraulic ram 9 one side, and displacement sensor 11 mainly used measures the axial displacement that left stand received the load and takes place.
Before the device carries out the integrated test to the stability of opposite column piece 7, at first fix support frame 1 subaerial, fix first slide rail 4 at the both ends of 1 length direction of support frame through the bolt respectively horizontal symmetry afterwards, then will fix fixed anchor clamps 2 on support frame 1 through the bolt according to the specification of the stand piece 7 that is surveyed, install portable anchor clamps 6 on guide rail 5 afterwards, install guide rail 5 on first slide rail 4 through slider 8 again, adjust the position of guide rail 5 and portable anchor clamps 6 and adapt to the stand piece 7 of different height and span.
When the shearing rigidity is tested, the baffle 3 is arranged at the end part of the first slide rail 4 far away from the fixed clamp 2, the left upright post of the upright post piece 7 is arranged on the fixed clamp 2, the upper base of the right upright post is contacted with the baffle 3, the electric hydraulic ejector rod 9 is arranged on the second slide rail 10, the electric hydraulic ejector rod 9 applies load to the lower base of the left upright post, the change of the load is recorded, the displacement change of the left upright post is measured through the displacement sensor 11, and the slope k of the best fitting straight line of the collected load displacement data point in the whole range is calculated through a polynomial fitting methodtiTransverse shear stiffness S of the column sheet 7tiThe calculation formula of (2) is as follows:
Figure BDA0003333320000000071
wherein d is the dimension between the column centroids of the column pieces 7, and h is the height of the column pieces 7.
When testing the limit load, the baffle 3 is installed at the end part of the first slide rail 4 close to the fixed clamp 2, the upper base of the left upright post is contacted with the baffle 3, the electric hydraulic ejector rod 9 is used for applying load to the lower base of the left upright post, the deformation condition of the upright post is observed, and the numerical value of the limit load is recorded until the applied experimental load reaches the upper limit or the transmitted deformation amount enables the upright post piece 7 to be incapable of executing the design function.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the foregoing embodiments or equivalent substitutions for some technical features, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a device of industry goods shelves stand piece stability integrated test, locates stand piece periphery, its characterized in that: the device comprises a support frame, a first upright piece clamp, a second upright piece clamp, a load applying assembly, a baffle and a sensor; the supporting frame is arranged on the periphery of the upright piece and comprises a first side edge, a second side edge, a third side edge and a fourth side edge which are sequentially connected; the first column piece clamp and the load applying assembly are arranged on the first side edge, and the first column piece clamp is arranged between the second side edge and the load applying assembly; the baffle is arranged on the second side edge; the second side edge and the fourth side edge are respectively provided with a slide rail, and the third side edge is arranged between the two slide rails; the second upright piece clamp is arranged on the third side edge; the sensor is arranged on the support frame.
2. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the baffle can be dismantled and be connected on the slide rail of second side.
3. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: a load sliding rail is arranged between the load applying component and the first side edge.
4. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the first stand column piece clamp and the second stand column piece clamp are respectively provided with a first clamping bolt and a second clamping bolt, and the first clamping bolt and the second clamping bolt are respectively used for adjusting the clamping thickness range of the first stand column piece clamp and the clamping thickness range of the second stand column piece clamp.
5. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the first upright piece clamp is detachably connected with the first side edge.
6. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the second upright piece clamp can be connected with the third side edge in a sliding mode.
7. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the first upright piece clamp and the second upright piece clamp are both provided in a plurality.
8. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the second side edge and the fourth side edge are parallel to each other, two sliding blocks are fixedly connected to two ends of the third side edge, and the two sliding blocks are connected with the sliding rails of the second side edge and the fourth side edge in a sliding mode respectively.
9. The device for comprehensively testing the stability of the column sheet of the industrial shelf according to claim 1, which is characterized in that: the first side and the third side are parallel to each other.
10. A method for testing by using the device for comprehensive stability test of industrial shelf column sheet according to any one of claims 1 to 9, wherein the column sheet comprises a first column and a second column which are parallel to each other, and the method comprises the following steps:
the method for testing the shear stiffness of the column sheet comprises the following steps:
step 1, mounting a first upright post of an upright post sheet on a first upright post sheet clamp, mounting a second upright post of the upright post sheet on a second upright post sheet clamp, and enabling a baffle to abut against the end part of the second upright post;
step 2, applying a load to the end part of the first upright post through the load applying assembly;
step 3, recording load changes, and measuring displacement changes of the first stand column through a sensor;
step 4, calculating the slope k of the best fitting straight line of the collected load displacement data points in the whole range through a polynomial fitting methodti；
Step 5, calculating the transverse shear stiffness S of the column sheettiThe calculation formula is as follows:
Figure FDA0003333319990000021
wherein d is the size between the column centroids of the column pieces, and h is the height of the column pieces;
the method for testing the limit load of the column sheet comprises the following steps:
step 1, mounting a first upright post of an upright post sheet on a first upright post sheet clamp, mounting a second upright post of the upright post sheet on a second upright post sheet clamp, and enabling a baffle to abut against the end part of the first upright post;
step 2, applying a load to the end part of the first upright post through the load applying assembly;
step 3, observing the deformation condition of the column sheet, if the applied test load reaches the upper limit or the deformation amount causes that the column sheet cannot execute the design function, executing the next step, otherwise, returning to the previous step;
and 4, recording limit load data.
CN202111287158.8A 2021-11-02 2021-11-02 Device and method for comprehensively testing stability of industrial goods shelf stand column piece Pending CN114046971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111287158.8A CN114046971A (en) 2021-11-02 2021-11-02 Device and method for comprehensively testing stability of industrial goods shelf stand column piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111287158.8A CN114046971A (en) 2021-11-02 2021-11-02 Device and method for comprehensively testing stability of industrial goods shelf stand column piece

Publications (1)

Publication Number Publication Date
CN114046971A true CN114046971A (en) 2022-02-15

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Application Number Title Priority Date Filing Date
CN202111287158.8A Pending CN114046971A (en) 2021-11-02 2021-11-02 Device and method for comprehensively testing stability of industrial goods shelf stand column piece

Country Status (1)

Country Link
CN (1) CN114046971A (en)

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