CN113533087A - A supplementary installation device that is used for intermediate layer core to cut realization - Google Patents
A supplementary installation device that is used for intermediate layer core to cut realization Download PDFInfo
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- CN113533087A CN113533087A CN202110778757.3A CN202110778757A CN113533087A CN 113533087 A CN113533087 A CN 113533087A CN 202110778757 A CN202110778757 A CN 202110778757A CN 113533087 A CN113533087 A CN 113533087A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The application provides an supplementary installation device that is used for intermediate layer core to cut to realize includes: the base is provided with a first vertical groove, a second vertical groove, a third vertical groove and a transverse groove; the first transverse positioning assembly and the second transverse positioning assembly are arranged in the transverse grooves and respectively provided with a first top block and a second top block which can move along the width direction of the loading plate; the lower loading plate vertical positioning block is arranged in the second vertical groove; the upper loading plate vertical positioning assembly is provided with a first fixed seat fixed with the base, a first sliding block is arranged on the first fixed seat, and a first positioning round rod is arranged on the first sliding block; the interlayer core vertical positioning assembly is provided with a second fixed seat fixed with the base, and a second positioning round bar is arranged on the second fixed seat.
Description
Technical Field
The application belongs to the technical field of composite material tests, and particularly relates to an auxiliary mounting device for shearing an interlayer core.
Background
The sandwich core shear performance is one of the most basic mechanical property test items for composite sandwich cores, and the sandwich core shear test is used for measuring the shear performance related to shear deformation along the sandwich core and parallel to the plane of a panel, and comprises measuring the shear strength parallel to the plane of the sandwich and the shear modulus related to strain in the plane perpendicular to the panel.
At present, the test standards in the test comprise GB/T1455-. The test specimens may be of sandwich construction or may be only sandwich cores.
Currently, the test is mainly performed by using ASTM C273, and the principles of three test standards of ASTM C273, GB/T1455-. The ASTM C273 test fixture includes both tensile and compressive loading configurations, and the tensile loading configuration is the predominant current practice because compressive loading tends to cause the test machine to run away due to instability. The test was conducted by applying a tensile or compressive load to the sandwich sample at a specified rate until the sample failed.
An important step prior to performing the test is to adhere the test specimen to the load plate 103. Since the test requires that the loading line 105 in the test process must pass through the diagonal line of the sandwich core, otherwise the test result is affected, which puts high demands on the position accuracy of the sample stuck on the loading plate:
a) along the width direction of the load plate 103: the sandwich core 104 must be attached centrally in the width direction of the two load plates 103, which requires that both side surfaces of the two load plates 103 in the width direction must be aligned;
b) along the length direction of the loading plate 103: the position at which the sandwich core 104 is attached must ensure that the load line 105 passes through the diagonal of the sandwich core 104 during the test, which requires that the distance of the sandwich core 104 from the non-load end faces of the two load plates (i.e., the end faces of the load plates on the side away from the mounting seats in fig. 1) along the length direction of the load plates must be the same and a value calculated according to the diagonal requirements.
In order to meet the requirements, in the prior art, firstly, positioning frames are drawn on two loading plates respectively according to the size of the sandwich core, and then the upper surface and the lower surface of the sandwich core are respectively stuck on the two loading plates by means of visual observation. However, this method relies on scribing and visual positioning, which is inefficient and has poor positioning accuracy.
Disclosure of Invention
It is an object of the present application to provide an auxiliary mounting device for sandwich core shear implementations that solves or mitigates at least one of the problems of the background art.
The technical scheme of the application is as follows: an auxiliary mounting device for sandwich core shear implementation, comprising:
the base is provided with a first vertical groove, a second vertical groove, a third vertical groove and a transverse groove, the first vertical groove, the second vertical groove and the third vertical groove are arranged along the length direction of the loading plate, and the transverse groove is arranged along the width direction of the loading plate;
the first transverse positioning assembly and the second transverse positioning assembly are arranged in the transverse groove, the first transverse positioning assembly and the second transverse positioning assembly are respectively provided with a first top block and a second top block which can move along the width direction of the loading plate, and the position of the sandwich core relative to the width direction of the loading plate can be adjusted by adjusting the movement of the first top block and the second top block in the width direction of the loading plate;
the lower loading plate vertical positioning block is arranged in the second vertical groove; and
the upper loading plate vertical positioning assembly is provided with a first fixed seat fixed with the base, the first fixed seat is provided with a first sliding block capable of sliding relative to the first fixed seat, and the first sliding block is provided with a first positioning round bar capable of moving along the width direction of the loading plate and used for bearing the first loading plate; the interlayer core vertical positioning assembly is provided with a second fixed seat fixed with the base, and a second positioning round rod capable of moving along the width direction of the loading plate is arranged on the second fixed seat.
Furthermore, the first vertical groove, the second vertical groove, the third vertical groove and the transverse groove in the base are the same in shape and are all T-shaped grooves.
In a preferred embodiment of the present application, the first lateral positioning assembly comprises:
the first fixing block is provided with a rectangular cavity along the width direction of the loading plate;
a first top block disposed within the rectangular cavity, the first top block facing a thickness edge of the sandwich core;
a first adjusting bolt passing through the first fixing block in the width direction of the load plate and coupled to the first top block, the first adjusting bolt being movable relative to the first fixing block to thereby move the first top block in the width direction of the load plate;
the first square nut and the first quick-release screw penetrate through the first fixing block and are matched with the first square nut, and the first fixing block is fixed with the base through the first square nut and the first square nut.
Further, the number of the rectangular cavities is two.
In a preferred embodiment of the present application, the second lateral positioning assembly comprises:
the second fixing block is provided with a second rectangular cavity along the width direction of the loading plate;
a second top block disposed within the second rectangular cavity, the second top block facing a thickness edge of the sandwich core;
a second adjusting bolt passing through the second fixing block in the width direction of the load plate and coupled to the second top block, the second adjusting bolt being movable relative to the second fixing block so as to move the second top block in the width direction of the load plate;
the fastening screw is arranged on one surface, facing the base, of the second fixing block, and the second fixing block and the base can be fixed through the fastening screw.
Further, the two fastening screws are arranged along the length direction of the loading plate.
In a preferred embodiment of the present application, the upper load plate vertical positioning assembly includes:
the L-shaped first fixed seat is composed of a first part extending along the thickness direction of the sandwich core and a second part extending parallel to the direction of the base;
the second square nut is arranged in the first vertical groove, and the first locking bolt penetrates through the second part and is matched with the second square nut;
the first sliding block is arranged on the first part and can slide relative to the first part, and a mounting hole extending along the width direction of the loading plate is formed in the first sliding block;
the first positioning round rod is arranged in the first sliding block mounting hole;
the side wall penetrating through the first fixing seat is provided with a first locking screw used for locking the first sliding block and the first part and a second quick-release screw used for locking the first sliding block and the first positioning round rod.
In a preferred embodiment of the present application, the sandwich core vertical positioning assembly comprises:
the L-shaped second fixed seat is formed by a first part extending along the thickness direction of the sandwich core and a second part extending parallel to the base direction, and the first part is provided with a mounting hole extending along the width direction of the loading plate; (ii) a
The third square nut is arranged in the third vertical groove, and the second locking bolt penetrates through the second part and is matched with the third square nut;
the second positioning round rod is arranged in the mounting hole;
and a third quick-release nail for locking the second fixing seat and the second positioning round rod is arranged on the side wall penetrating through the second fixing seat.
Furthermore, the first quick-release screw, the second quick-release screw and the third quick-release screw are all quincunx hand-screwed screws.
The utility model provides an auxiliary installation device can be when carrying out shear test, and the auxiliary installation intermediate layer core adjusts the position of pasting of intermediate layer core and loading plate, relies on the device can realize the centering and the location between intermediate layer core and the upper and lower loading plate.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
FIG. 1 is a schematic view of a prior art sandwich core shear test.
Fig. 2 is a front view schematically illustrating an auxiliary mounting device according to the present application.
Fig. 3 is a schematic view of the auxiliary mounting device based on the view from the direction a in fig. 2.
Fig. 4 is a schematic view of a base in the present application.
Fig. 5 is a schematic view of the base according to the view angle B in fig. 4.
Fig. 6 is a schematic view of the base according to the view angle C in fig. 4.
FIG. 7 is a schematic view of a first lateral positioning assembly of the present application.
Fig. 8 is a schematic view of the first lateral positioning assembly from the perspective D of fig. 7.
FIG. 9 is a schematic view of the first lateral positioning assembly from the E-E perspective of FIG. 7.
FIG. 10 is a schematic view of a second lateral positioning assembly of the present application.
FIG. 11 is a schematic view of a second lateral positioning assembly from the view of FIG. 10 in the direction F-F.
FIG. 12 is a schematic view of a second lateral positioning assembly based on the angle G in FIG. 11.
Fig. 13 is a schematic view of an upper load plate vertical positioning assembly of the present application.
Fig. 14 is a schematic view of the upper load plate vertical positioning assembly from the view of direction J-J in fig. 13.
Fig. 15 is a schematic view of the upper load plate vertical positioning assembly based on the H-H view of fig. 13.
Fig. 16 is a schematic view of an upper load plate vertical positioning assembly of the present application.
Fig. 17 is a schematic view of the upper load plate vertical positioning assembly based on the view of direction K in fig. 16.
Fig. 18 is a schematic view of the upper load plate vertical positioning assembly based on the L-L view of fig. 16.
Reference numerals:
10-base
11-first vertical groove
12-second vertical groove
13-third vertical groove
14-transverse groove
20-first transverse orientation Assembly
21-first fixed block
211-rectangular cavity
22-first top piece
23-first adjusting screw
24-first quick-release screw
25-first square nut
30-second lateral positioning Assembly
31-second fixed block
32-second top block
33-second adjusting screw
34-fastening screw
40-vertical positioning assembly for upper loading plate
41-first fixed seat
411-first part
412-second part
42-first slider
43-second Square nut
44-first positioning round bar
45-first locking screw
46-first locking bolt
47-second quick-release screw
50-sandwich core vertical positioning assembly
51-second fixed seat
52-second positioning round bar
53-third square nut
54-third quick-release screw
55-second locking bolt
60-vertical positioning block for lower loading plate
71-first load plate
72-second load plate
80-sandwich core
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
The invention aims to provide a device for assisting the interlayer core 80 in adjusting the pasting position of the interlayer core 10 and a loading plate during a shear test, and the device can be used for realizing the centering and positioning between the interlayer core and the upper and lower loading plates.
For convenience of description, the upper and lower load plates 71 and 72 are used to distinguish the load plates adhered to both surfaces of the sandwich core 80 (i.e., a sample), respectively, and are referred to as a transverse direction or x-direction along the width direction of the load plate, a vertical direction or y-direction along the length direction of the load plate, and a thickness direction or z-direction along the thickness direction of the sandwich core, wherein the z-direction is perpendicular to the xy-plane.
Referring to fig. 2 and 3, the present application provides an auxiliary mounting device for a shear test of a sandwich core, which mainly comprises: the device comprises a base 10, a first transverse positioning assembly 20, a second transverse positioning assembly 30, an upper loading plate vertical positioning assembly 40, an interlayer core vertical positioning assembly 50 and a lower loading plate vertical positioning block 60.
Referring to the structural schematic diagrams of the base 10 shown in fig. 4 to 6, the base 10 is a rectangular steel square plate, three vertical grooves extend along the y direction on the base 10, a first vertical groove 11, a second vertical groove 12 and a third vertical groove 13 are sequentially formed from right to left, and a transverse groove 14 extends along the x direction. The three vertical grooves are substantially uniformly distributed on the base 10, while the transverse grooves are substantially in the middle of the base 10.
In the application, the vertical grooves and the transverse grooves are identical in structure, and the identical structure comprises identical groove configurations and identical groove sizes. For example, in the preferred embodiment of the present application, the vertical grooves and the horizontal grooves are both T-shaped through grooves.
Wherein, the upper loading plate vertical positioning assembly 40 is installed in the first vertical groove 11 on the right side, the interlayer core vertical positioning assembly 50 is installed in the third vertical groove 13 on the left side, and the lower loading plate vertical positioning block 60 is installed in the second vertical groove 12 in the middle. The first transverse positioning component 20 and the second transverse positioning component 30 are arranged on two sides of the transverse groove 14 in the middle of the base 10. Because the base 10 adopts a T-shaped through groove structure, the first transverse positioning component 20, the upper loading plate vertical positioning component 4, the interlayer core vertical positioning component 50, the lower loading plate vertical positioning block 60 and the like which are arranged in the T-shaped groove can slide along the arrangement direction of the T-shaped through groove, so that the positions of the interlayer core samples can be adjusted according to the sizes of the interlayer core samples.
It should be noted that the second lateral positioning assembly 30 in the present application is installed in the T-shaped through slot, and is directly fixed on the base 10 through the fastening screw 34 and the hole on the base 10, so as to be used as a reference for adjusting other assemblies.
Referring to the schematic structural views of the first lateral positioning assembly 20 shown in fig. 7 to 9, the first lateral positioning assembly 20 mainly includes: the device comprises a first fixing block 21, a first ejector block 22, a first adjusting bolt 23, a first square nut 25 and a first quick-release screw 24.
The first fixing block 21 is a rectangular block having at least one rectangular cavity 211 therein. In one embodiment of the present application, the number of the rectangular cavities 211 in the first fixing block 21 is two.
The number of the first top blocks 22 is the same as that of the rectangular cavities 211, the first top blocks 22 are long strips with round heads, the length and the thickness of the first top blocks 22 are consistent with the size of the rectangular cavities 211 in the first fixing block 2, and the first top blocks 22 can move left and right in the cavity of the fixing block 21 without displacement in other directions.
The first adjusting bolt 23 is a cylindrical adjusting bolt, the end of the first adjusting bolt 23 is provided with an annular groove, the rod part of the annular groove penetrates through the side wall of the first fixing block 21 and extends into a hole in the center of the first ejector block 22, the adjusting bolt is connected with the first ejector block 22 through the annular groove and the hole in the first ejector block 22 by two pins, and the ejector block 2 can be pushed by rotating the first adjusting bolt 23.
A first square nut 25 is arranged in the left lateral groove 14, a first quick-release screw 24 passes through the first fixed block 21 to be matched with the first square nut 25, and the first square nut 24 can be tightened by screwing the first quick-release screw 24, so that the whole first lateral positioning assembly 20 is fixed on the base 10. In the preferred embodiment of the present application, the first quick release screw 24 is a torx bolt, and the first transverse positioning assembly 20 can be easily fixed or released on the base 10 only by twisting.
In the first lateral positioning assembly 20, the first ejector block 22 is positioned just opposite the sandwich core 80. In use, rotating the first adjustment bolt 23 may push the first top block 22 to move the sandwich core 80 left and right.
Referring to the schematic structural views of the second lateral positioning assembly 30 shown in fig. 10 to 12, the second lateral positioning assembly 30 mainly includes: a second fixed block 31, a second top block 32, a second adjusting bolt 33 and a locking screw 34.
The second fixing block 31 is a square block having a rectangular cavity.
The second top block 32 is a long strip with round heads, the length and the thickness of the second top block 32 are uniform, the size of a rectangular cavity of the second fixed block 31 is consistent, and the second top block 32 can move left and right in the cavity of the second fixed block 31 without displacement in other directions.
The second adjusting bolt 33 is a cylindrical adjusting bolt, the end of the second adjusting bolt 32 is provided with an annular groove, the rod part of the second adjusting bolt passes through the side wall of the second fixing block 32 and extends into a hole in the center of the second ejector block 32, the second adjusting bolt 33 is connected with the second ejector block 2 through two pins which pass through the annular groove and the hole in the second ejector block 32, and the second ejector block 32 can be pushed by rotating the second adjusting bolt 33.
The locking screws 34 are disposed on one side surface of the second fixing block 31 facing the base 10, and two locking screws 34 are disposed on the base 10 to which the entire second transverse positioning assembly 30 can be fixed.
In the second lateral positioning assembly 30, the second ejector block 32 is positioned just opposite the sandwich core 80. In use, rotating the second adjustment bolt 33 may push the second top block 32 to move the sandwich core 80 left and right.
The amount of movement of the sandwich core 80 in the width direction of the load plate can be adjusted by the cooperative use of the first and second lateral positioning assemblies 20 and 30.
Referring to the schematic structural views of the upper load plate vertical positioning assembly 40 shown in fig. 13 to 15, the upper load plate vertical positioning assembly 40 mainly includes: the first fixing seat 41, the first sliding block 42, the first positioning round rod 44, the locking screw, the locking bolt and the like.
The first fixing base 41 is an L-shaped solid steel block, which includes a first portion 411 extending along the thickness direction of the sandwich core and a second portion 412 extending along a direction parallel to the base plane, and the first portion 411 is a strip structure with a rectangular or square cross section.
The first slider 42 is a cubic structure including a circular through hole and a rectangular or square through hole. The strip-shaped structure in the first fixing seat 41 passes through the square through hole of the first sliding block 42 and is provided with a first locking screw 45 passing through the side wall of the first fixing seat 41 for fixing the first sliding block 42, and if the first locking screw 45 beside is not screwed tightly, the first sliding block 42 can move up and down (i.e. move along the z direction) along the strip-shaped structure of the first fixing seat 41.
The diameter of the first positioning round rod 44 is the same as that of the circular through hole on the first sliding block 42, and can just penetrate through the circular through hole of the first sliding block 42, the second quick-release screw 47 is arranged on the side wall of the first sliding block 42 for fixing the first positioning round rod 44, and if the second quick-release screw 47 beside is not screwed tightly, the first positioning round rod 44 can move left and right (i.e. along the x direction) along the circular hole. The first positioning round bar 44 carries the upper loading plate 71, and the first positioning round bar 44 can be brought into contact with or separated from the upper loading plate 71 by sliding left and right. In this embodiment, the second quick-release screw is also a torx screw, which facilitates quick release.
A second square nut 43 is disposed in the right first vertical groove 11, and a first locking bolt 46 passes through the second portion 412 to engage with the second square nut 43, so that the upper load plate vertical positioning assembly 40 can be fixed to the first vertical groove 11 of the base 10 by tightening the first locking bolt 46.
Since the thickness of each type of sandwich core is different, the position of the upper loading plate is different during the pasting, and at this time, the height of the first sliding block 42 needs to be adjusted, so that the height of the first positioning circular rod 44 on the first sliding block 42 is consistent with the height of the upper loading plate, and after the height is adjusted, the first sliding block 42 can be fixed on the first fixing seat 41 by screwing the first locking screw 45.
When the vertical direction of the upper loading plate is positioned, the first positioning round rod 44 is slid to be in contact with the upper loading plate 71; when the next sandwich core is attached to the loading plate, the previous sandwich core needs to be taken out together with the loading plate, which requires the positioning round bar to be detached from the upper loading plate. The positioning round bar can be easily and conveniently fixed or loosened by adopting the quincunx hand-screwed screw.
In the application, the first sliding block 42 is controlled to move in the z direction and the first positioning round rod 44 is controlled to move in the x direction by the first locking screw 45 and the second quick-release screw 47, so that the first positioning round rod 44 bearing the upper loading plate 71 can adapt to different thicknesses of the interlayer cores.
Referring to the structural schematic view of the sandwich core vertical positioning assembly 50 shown in fig. 16 to 18, the second positioning round bar 52 in the sandwich core vertical positioning assembly 50 is not movable in both the lateral and thickness directions, but is movable only in the lateral direction, like the upper load plate vertical positioning assembly 40. The sandwich core vertical positioning component is suitable for sandwich cores with different thicknesses, because the position of the lower surface of the sandwich core is fixed no matter the thickness of the sandwich core, and the sandwich core vertical positioning component can be ensured to be suitable for sandwich cores with different thicknesses only by designing according to the minimum sandwich core thickness specified by the test standard. Therefore, the sandwich core vertical positioning component mainly comprises: a second fixed seat 51, a second positioning round bar 52, a third square nut 53, a second locking bolt 55, a third quick-release screw 54 and the like.
The second holder 51 is similar in structure to the first holder 41 in that a first portion extending in the thickness direction of the sandwich core and a second portion extending in a direction parallel to the plane of the holder constitute an L-shaped solid steel block, and a circular through-hole is formed in the upper half (first portion) of the second holder 51.
The diameter of the second positioning round bar 52 is consistent with that of the circular through hole on the second fixing seat 51, the second positioning round bar 52 penetrates into the circular through hole, and the second positioning round bar 52 can be contacted with or separated from the interlayer core by sliding left and right.
And a third quick-release screw 54 penetrating through the side wall of the second fixed seat 51 is arranged on the second fixed seat 51, and the third quick-release screw 54 is used for fixing the second positioning round rod 52. The second positioning round bar 52 can be moved left and right (i.e., in the x-direction) along the circular hole without tightening the second quick release screw 54. In this embodiment, the third quick release screw 54 is a torx screw, which can easily and conveniently fix or release the second positioning round rod 52.
The third square nut 53 is arranged in the left third vertical groove 13, the second locking bolt 55 penetrates through the second part of the second fixed seat 52 to be matched with the third square nut 53, the interlayer core vertical positioning assembly 50 can be fixed on the T-shaped groove of the base 10 by screwing the second locking bolt 55, and after the second locking bolt 55 is loosened, the interlayer core vertical positioning assembly 50 can slide along the Y direction along the T-shaped groove.
When the y-direction of the sandwich core needs to be positioned, the second positioning round bar 52 is slid to be in contact with the sandwich core 80; when the next sandwich core loading plate is attached, the previous sandwich core is taken out together with the loading plate, and the second positioning round bar 52 is separated from the sandwich core 80.
Because the thickness of the lower loading plate is fixed and the lower loading plate is directly placed on the upper surface of the base 10, the positioning in the y direction is simple, and only one lower loading plate vertical positioning block 60 needs to be installed on the base 10. The lower load plate vertical positioning block 60 is similar to a cylindrical head screw, is matched with a square nut, and is fixed in the second vertical groove 12 in the middle of the base 10, and the position of the lower load plate vertical positioning block 6 can be adjusted along the T-shaped through groove by loosening the lower load plate vertical positioning block.
Compared with the installation mode of the prior art, the auxiliary installation device provided by the application has the advantages that the alignment and positioning method of the prior art in 'line marking + visual' is changed, the interlayer core, the upper loading plate and the lower loading plate are respectively positioned by the positioning component pairs in the x direction and the y direction, the alignment and positioning precision is high, the error in the test process can be reduced, and the installation efficiency is improved.
The application provides an auxiliary positioning and adjustment process as follows when auxiliary installation device carries out intermediate layer core sample and pastes with upper and lower loading plate:
step 1: the positions of the top blocks on the two transverse positioning assemblies on the right side and the left side of the base are adjusted.
The specific process is as follows:
firstly, subtracting the width of the sandwich core sample from the width of a loading plate, then taking a half of the width, and calculating the distance of the top blocks on the two transverse positioning components which need to extend out;
and then, rotating the adjusting bolts on the two transverse positioning assemblies on the right side and the left side, pushing the top block to the calculated position, and screwing corresponding quick-release screws or fastening screws tightly to fix the position of the top block, so that the interlayer core can be ensured to be exactly positioned in the middle of the upper and lower loading plates in the width direction during subsequent installation.
Step 2: and adjusting and fixing the positions of the three vertical positioning assemblies (namely the upper loading plate vertical positioning assembly 40, the interlayer core vertical positioning assembly 50 and the lower loading plate vertical positioning block 60).
The specific process comprises the following steps:
calculating the distance between the sandwich core and the non-loading end faces of the two loading plates in the y direction according to the diagonal requirement of the sandwich core passing through the loading axis required by the test standard;
then, loosening locking screws or locking bolts matched with the square nuts in the three vertical positioning assemblies to enable the three vertical positioning assemblies to freely slide along respective T-shaped through grooves;
and finally, adjusting the three vertical positioning assemblies to required positions according to the calculated positions of the upper loading plate, the interlayer core and the lower loading plate, and screwing the locking bolts/screws on the square nuts to fix the positions of the locking bolts/screws.
It should be noted that, when the upper loading plate vertical positioning assembly 30 is adjusted, the height of the first positioning round rod on the upper loading plate vertical positioning assembly needs to be adjusted according to the thickness of the interlayer core.
And 3, step 3: loosening the first transverse positioning assembly from the T-shaped through groove of the base to verify the free transverse movement of the T-shaped through groove and pushing the first transverse positioning assembly to a position where the adhesion of the sandwich core-loading plate is not disturbed;
and 4, step 4: the interlayer core is adhered to the upper and lower loading plates
The specific process is as follows:
1) placing the lower loading plate on a base of the whole device, aligning and attaching the left side surface of the lower loading plate with the side surface of the fixing block of the second transverse positioning assembly, and jacking the upper end surface of the lower loading plate with the vertical positioning block of the lower loading plate;
2) slightly sticking the adhesive film required for sticking on the upper surface and the lower surface of the interlayer core;
3) placing the interlayer core on the lower loading plate, wherein the left side surface of the interlayer core is aligned and attached to the top block of the second transverse positioning assembly, and the lower end surface of the interlayer core is abutted to the positioning round rod of the interlayer core vertical positioning assembly;
4) and placing the upper loading plate on the interlayer core, aligning and attaching the left side surface of the upper loading plate and the side surface of the fixing block of the second transverse positioning assembly, and jacking the lower end surface of the upper loading plate and the vertical positioning block of the lower loading plate together.
So far, the centering and the position between the sandwich core and the loading plate meet the requirements of test standards.
And 5, step 5: and fixing the interlayer core and the upper and lower loading plates.
The specific process is as follows:
and pushing the first transverse positioning component to enable the fixed block to abut against the right side faces of the upper loading plate and the lower loading plate, and enabling the ejector block to abut against the right side face of the interlayer core.
And 6, step 6: standing for a period of time to enable the sandwich core to be slightly adhered to the upper loading plate and the lower loading plate (not really adhered to each other);
loosening the first transverse positioning assembly, and loosening the positioning round rods on the vertical positioning assemblies of the upper loading plate and the lower loading plate to separate the positioning round rods from the loading plate and the interlayer core;
and lightly taking out the sandwich core and the loading plate which are slightly stuck together from the device, fixing by adopting a fixing clamp, and putting into an environmental box for high-temperature curing.
And finishing the adhesion between the sandwich core and the loading plate.
If the next interlayer core is needed to be pasted, only the 4 th step to the 6 th step need to be repeated, and the 1 st step to the 3 rd step do not need to be repeated. Only when the dimension of the sandwich core changes, the steps 1 to 3 need to be carried out.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. An auxiliary mounting device for sandwich core shear implementation, comprising:
the base (10) is provided with a first vertical groove (11), a second vertical groove (12), a third vertical groove (13) and a transverse groove (14), the first vertical groove (11), the second vertical groove (12) and the third vertical groove (13) are arranged along the length direction of the loading plate, and the transverse groove (14) is arranged along the width direction of the loading plate;
a first lateral positioning assembly (20) and a second lateral positioning assembly (30) disposed in the lateral groove (14), the first lateral positioning assembly (20) and the second lateral positioning assembly (30) having a first top block (22) and a second top block (32) respectively movable in the width direction of the load plate, the position of the sandwich core with respect to the width direction of the load plate being adjustable by adjusting the movement of the first top block (22) and the second top block (32) in the width direction of the load plate;
a lower loading plate vertical positioning block (60) arranged in the second vertical groove (12); and
the upper loading plate vertical positioning component (40) is arranged in the first vertical groove (11), the interlayer core vertical positioning component (50) is arranged in the third vertical groove (13), the upper loading plate vertical positioning component (40) is provided with a first fixed seat (41) fixed with the base (10), a first sliding block (42) capable of sliding relative to the first fixed seat (41) is arranged on the first fixed seat (41), and a first positioning round bar (44) capable of moving along the width direction of the loading plate and used for bearing a first loading plate (71) is arranged on the first sliding block (42); the interlayer core vertical positioning assembly (50) is provided with a second fixed seat (51) fixed with the base (10), and a second positioning round rod (55) capable of moving along the width direction of the loading plate is arranged on the second fixed seat (51).
2. An auxiliary mounting device for sandwich core shear realization as claimed in claim 1, wherein the first vertical groove, the second vertical groove, the third vertical groove and the transverse groove in the base are of the same shape and are all T-shaped grooves.
3. The auxiliary mounting device for sandwich core shear realization of claim 1, characterized by the fact that said first lateral positioning assembly (20) comprises:
a first fixing block (21) having a rectangular cavity (211) along the width direction of the loading plate;
a first top block (22) disposed within the rectangular cavity (211), the first top block (22) facing a thickness edge of the sandwich core (80);
a first adjusting bolt (23) passing through the first fixing block (21) in the width direction of the load plate and connected to the first top block (22), the first adjusting bolt (23) being movable relative to the first fixing block (21) to thereby move the first top block (22) in the width direction of the load plate;
the first square nut (25) arranged in the transverse groove (14) of the base and the first quick-release screw (24) which penetrates through the first fixing block (21) and is matched with the first square nut (25) enable the first fixing block (21) and the base (10) to be fixed through the first square nut (25) and the first square nut (25).
4. Auxiliary mounting device for sandwich core shear realization according to claim 3, characterized by the fact that the number of rectangular cavities (211) is two.
5. An auxiliary mounting device for sandwich core shear realization according to claim 1, characterized by the fact that said second lateral positioning assembly (30) comprises:
a second fixing block (31) having a second rectangular cavity along the width direction of the loading plate;
a second top block (32) disposed within the second rectangular cavity, the second top block (32) facing a thickness edge of the sandwich core (80);
a second adjusting bolt (33) passing through the second fixing block (31) in the width direction of the load plate and connected to the second top block (32), the second adjusting bolt (33) being movable relative to the second fixing block (31) to thereby move the second top block (32) in the width direction of the load plate;
and a fastening screw (34) which is provided on the surface of the second fixing block (31) facing the base (10), wherein the second fixing block (31) and the base (10) can be fixed by the fastening screw (32).
6. Auxiliary mounting device for sandwich core shear realization according to claim 5, characterized in that the fastening screws (34) are provided in two along the length of the loading plate.
7. The auxiliary mounting device for sandwich core shear realization of claim 1, characterized by the fact that the upper load plate vertical positioning assembly (40) comprises:
an L-shaped first fixing base (41) composed of a first part (411) extending in the thickness direction of the sandwich core (80) and a second part (412) extending in parallel with the direction of the base (10);
a second square nut (43) disposed in the first vertical groove (11) and a first locking bolt (46) passing through the second portion (412) to cooperate with the second square nut (43);
a first sliding block (42) which is arranged on the first part (411) and can slide relative to the first part (411), wherein the first sliding block (42) is provided with a mounting hole extending along the width direction of the loading plate;
a first positioning round rod (44) arranged in the mounting hole of the first sliding block (42);
wherein, a first locking screw (45) for locking the first sliding block (42) and the first part (411) and a second quick-release screw (47) for locking the first sliding block (42) and the first positioning round rod (44) are arranged on the side wall penetrating through the first fixed seat (41).
8. The auxiliary mounting device for sandwich core shear realization of claim 1, characterized by the sandwich core vertical positioning assembly (50) comprising:
the L-shaped second fixed seat (51) is formed by a first part extending along the thickness direction of the sandwich core (80) and a second part extending parallel to the direction of the base (10), and the first part is provided with a mounting hole extending along the width direction of the loading plate; (ii) a
A third square nut (53) disposed in the third vertical groove (13) and a second locking bolt (55) passing through the second portion to be fitted with the third square nut (53);
a second positioning round bar (52) arranged in the mounting hole;
wherein, a third quick-release nail (54) which is used for locking the second fixed seat (51) and the second positioning round rod (52) is arranged on the side wall which penetrates through the second fixed seat (51).
9. Auxiliary mounting device for sandwich core shear realization according to any of claims 1 to 8 characterized by that the first quick-release screw (24), the second quick-release screw (47) and the third quick-release screw (54) are all quincunx hand screws.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110778757.3A CN113533087B (en) | 2021-07-09 | 2021-07-09 | Auxiliary installation device for realizing shearing of sandwich core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110778757.3A CN113533087B (en) | 2021-07-09 | 2021-07-09 | Auxiliary installation device for realizing shearing of sandwich core |
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| CN113533087B CN113533087B (en) | 2023-08-22 |
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| JPS62180240A (en) * | 1986-02-04 | 1987-08-07 | Hitachi Chem Co Ltd | Shearing test method for interlayer of laminate plate |
| US20090013796A1 (en) * | 2007-07-12 | 2009-01-15 | Doleski Robert F | Test apparatus to determine the shear strength of a composite sandwich beam under a high hydrostatic load |
| CN102095647A (en) * | 2010-11-15 | 2011-06-15 | 西安交通大学 | Device for testing mechanical properties of thin sheet under simple shear loading |
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| CN112067433A (en) * | 2020-08-24 | 2020-12-11 | 中国飞机强度研究所 | Auxiliary centering installation device for composite material rail shear test |
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2021
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| JPS62180240A (en) * | 1986-02-04 | 1987-08-07 | Hitachi Chem Co Ltd | Shearing test method for interlayer of laminate plate |
| US20090013796A1 (en) * | 2007-07-12 | 2009-01-15 | Doleski Robert F | Test apparatus to determine the shear strength of a composite sandwich beam under a high hydrostatic load |
| CN102095647A (en) * | 2010-11-15 | 2011-06-15 | 西安交通大学 | Device for testing mechanical properties of thin sheet under simple shear loading |
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