CN110376038A - A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness - Google Patents
A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness Download PDFInfo
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- CN110376038A CN110376038A CN201910713404.8A CN201910713404A CN110376038A CN 110376038 A CN110376038 A CN 110376038A CN 201910713404 A CN201910713404 A CN 201910713404A CN 110376038 A CN110376038 A CN 110376038A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness, it is related to molded test device.The present invention be solve it is existing gather materials-molded test of the sandwich test specimen of bitumen-aggregate during, asphalt membrane thickness is difficult to be precisely controlled, while aggregate surface texture is easy to happen destruction, leads to the problem of the broken powder that gathers materials.The present invention includes bracket, sweat box, central axis, coarse adjustment knob, vernier knob, upper test specimen installation set and lower test specimen installation set, central axis is arranged along the vertical direction, coarse adjustment knob and vernier knob are from top to bottom successively installed on central axis, the upper end of coarse adjustment knob is equipped with the first limit annulus, the lower end of coarse adjustment knob is equipped with the second limit annulus, the upper end of vernier knob is equipped with third and limits annulus, the lower end of vernier knob is equipped with the 4th limit annulus, the lower end of central axis is equipped with upper test specimen installation set, test specimen installation set under being arranged right below of upper test specimen installation set, lower end inside lower test specimen installation set is equipped with spring.The present invention is used for sandwich specimen molding.
Description
Technical field
The present invention relates to molded test devices, and in particular to a kind of sandwich specimen molding for accurately controlling asphalt membrane thickness
Device.
Background technique
Asphalt road common used material is made of pitch and gathering materials, adjacent two pieces gather materials between filled bitumen.Pitch
Film average thickness is about that the asphalt membrane inside asphalt is in uneven thickness, and range is between several nanometers to several millimeters.Pitch
The thickness of film significantly affects asphalt part and whole mechanical property, therefore production collection is frequently necessary in scientific research
Material-bitumen-aggregate form sandwich test specimen studies asphalt membrane thickness to the affecting laws of asphalt mechanical property, wherein
The variation range of asphalt membrane thickness is mainly between 10 microns to 500 microns.Gather materials at present-the sandwich test specimen of bitumen-aggregate at
Type mode mainly includes two kinds: dynamic shear rheometer method and load weight method.
Dynamic shear rheometer is a kind of testing machine that can be controlled pressure head and move up and down and then apply tension and compression stress, generally
Equipped with sweat box.When forming sandwich test specimen using dynamic shear rheometer, the test specimen that gathers materials up and down is separately fixed at dynamic and is cut
It cuts on rheometer on push-down head, the laminar asphalt blocks of pre-production is placed on push-down head, are heated to 160 DEG C by sweat box
Soften asphalt membrane to 180 DEG C, then controls seaming chuck and move down fixed range to squeeze asphalt membrane, and then produce collection
The sandwich test specimen of material-bitumen-aggregate form, and asphalt membrane thickness can be controlled.When using this method, need it is right first
It is fixed that zero shift clicks through rower, that is, determines two pieces of rigid accessible positions that gather materials.But since rigidity of gathering materials is larger, quality is again
It is very crisp, therefore the extruding of micro-displacement will also result in gather materials connects when carrying out the calibration of zero shift point, after two pieces of aggregate contacts
Contacting surface is crushed, and can not only destroy itself the texture structure of gathering materials, but also can generate the broken powder that gathers materials in surface of aggregate, both
Phenomenon can all cause between asphalt and aggregate adhesion strength to reduce, especially the powder of surface of aggregate, will cause asphalt and aggregate it
Between insufficient contact, make asphalt membrane and generate gap between gathering materials, can seriously reduce asphalt and aggregate between adhesion strength.Cause
This, this forming method will affect the accuracy of later period Mechanics Performance Testing.In addition, dynamic shear rheometer it is expensive and
It is not common instrument, many institution of higher learning and research institution have no and purchase.
Load weight method refers to, by special fixture, make up and down the test specimen that gathers materials be disposed vertically, gather materials at two pieces between instill
The asphalt liquid droplets that temperature is 160 DEG C to 180 DEG C, the top then to gather materials above places the counterweight of constant weight, passes through counterweight
Weight squeeze two pieces gather materials between drop, and then formed and gathered materials-sandwich the test specimen of bitumen-aggregate.By the weight for adjusting counterweight
Amount, to control the thickness of asphalt membrane, counterweight is heavier, and asphalt membrane is thinner.This forming process needs a large amount of manual operations, thus
It cannot carry out in the sweat box of high temperature, generally indoor carry out at room temperature testing.At room temperature due to hard pitch drop
Temperature quickly reduces, its temperature generally has fallen to 100 DEG C hereinafter, can seriously reduce between asphalt and aggregate at the end of molding
Adhesion strength.Be influenced by temperature by adjusting counterweight weight the method that controls asphalt membrane thickness it is larger, it is identical in counterweight weight
When, the asphalt membrane of the higher production of temperature is thicker, and since room temperature is difficult to control, asphalt membrane thickness is difficult to control accurately.Therefore,
This forming method also will affect the accuracy of later period Mechanics Performance Testing.In addition, weight cannot since counterweight has fixed specification
Consecutive variations, therefore asphalt membrane thickness can not realize consecutive variations.
Summary of the invention
The present invention in order to solve it is existing gather materials-molded test of the sandwich test specimen of bitumen-aggregate during, asphalt membrane thickness is difficult
To be precisely controlled, while aggregate surface texture is easy to happen destruction, leads to the problem of the broken powder that gathers materials, and then proposes that one kind can essence
The really sandwich specimen molding device of control asphalt membrane thickness.
The technical solution adopted by the present invention to solve the above technical problem is:
A kind of sandwich specimen molding device accurately controlling asphalt membrane thickness includes bracket, sweat box, central axis, coarse adjustment
Knob, vernier knob, upper test specimen installation set and lower test specimen installation set, central axis are arranged along the vertical direction, on central axis by up to
Under be successively installed with coarse adjustment knob and vernier knob, the upper end of coarse adjustment knob is equipped with the first limit annulus, the lower end of coarse adjustment knob
Equipped with the second limit annulus, the upper end of vernier knob is equipped with third and limits annulus, and the lower end of vernier knob is equipped with the 4th limit circle
Ring, the first limit annulus, the second limit annulus, third limit annulus and the 4th limit annulus are set on center shaft, and first
Limit annulus, the second limit annulus, third limit annulus and the 4th limit annulus are affixed with bracket respectively, and the lower end of central axis is set
There is a upper test specimen installation set, test specimen installation set under being arranged right below of upper test specimen installation set, the lower end inside lower test specimen installation set is set
There is spring, upper test specimen installation set and lower test specimen installation set are arranged in sweat box.
The beneficial effects of the present invention over the prior art is:
1, the present invention can accurately control moving up and down for test specimen installation set by coarse adjustment knob and vernier knob, in turn
The thickness of accurate control asphalt membrane, the thickness and precision of asphalt membrane can reach 0.1 micron.
2, spring is arranged in lower end of the present invention inside lower test specimen installation set, forms flexible foundation.After upper and lower test specimen contact
When continuing to move down, sliding block is moved down, and spring is compressed, and upper and lower test specimen is come into full contact with without regard to generation
Excessive contact force will not crush the contact surface to gather materials up and down.
3, the present invention uses two knobs moving up and down, it can be achieved that asphalt filmthickness by internal screw thread control centre axis
The consecutive variations of degree.
4, test specimen installation set is arranged in sweat box the present invention up and down, and each control handle and bolt are arranged at temperature
Outside case ,-the forming temperature of the sandwich test specimen of bitumen-aggregate that gathers materials can be accurately controlled, without influencing manual operations.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of central axis 3 in the present invention；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the structural schematic diagram of third limit annulus 23 in the present invention；
Fig. 5 is the structural schematic diagram of upper test specimen peace pivoted housing 6 in the present invention；
Fig. 6 is the structural schematic diagram of lower test specimen peace pivoted housing 7 in the present invention；
Fig. 7 is the relative position schematic diagram of sliding block 72 and observation window 76 in the present invention；
Fig. 8 is the sandwich test specimen schematic diagram in the present invention after upper 10 clamping of test specimen 8, lower test specimen 9 and asphalt membrane；
Fig. 9 is the structure after upper test specimen installation set 6 in the present invention, lower test specimen installation set 7, upper test specimen 8 and the installation of lower test specimen 9
Schematic diagram.
Specific embodiment
Specific embodiment 1: illustrating that present embodiment, one kind described in present embodiment can be controlled accurately in conjunction with Fig. 1 to Fig. 9
The sandwich specimen molding device of asphalt membrane thickness processed include bracket 1, sweat box 2, central axis 3, coarse adjustment knob 4, vernier knob 5,
Upper test specimen installation set 6 and lower test specimen installation set 7, central axis 3 is arranged along the vertical direction, from top to bottom successively spinning on central axis 3
There are coarse adjustment knob 4 and vernier knob 5, the upper end of coarse adjustment knob 4 is equipped with the first limit annulus 21, and the lower end of coarse adjustment knob 4 is equipped with
Second limit annulus 22, the upper end of vernier knob 5 are equipped with third and limit annulus 23, and the lower end of vernier knob 5 is equipped with the 4th limit
Annulus 24, the first limit annulus 21, second limit annulus 22, third limit annulus 23 and the 4th limit annulus 24 and are sleeved on
In mandrel 3, first limit annulus 21, second limit annulus 22, third limit annulus 23 and the 4th limit annulus 24 respectively with branch
Frame 1 is affixed, and the lower end of central axis 3 is equipped with upper test specimen installation set 6, test specimen installation set under being arranged right below of upper test specimen installation set 6
7, the lower end inside lower test specimen installation set 7 is equipped with spring 71, and upper test specimen installation set 6 and lower test specimen installation set 7 are arranged at temperature
In case 2.
Specific embodiment 2: illustrate present embodiment in conjunction with Fig. 1 to Fig. 3, the upper end of central axis 3 described in present embodiment
Excircle side wall is equipped with coarse-pitch thread 31, and inner circumferential side wall and the coarse-pitch thread 31 of coarse adjustment knob 4 are threadedly engaged, under central axis 3
Excircle side wall is held to be equipped with fine thread 32, inner circumferential side wall and the fine thread 32 of vernier knob 5 are threadedly engaged.It is other composition and
Connection type is same as the specific embodiment one.
Be designed in this way coarse adjustment knob 4 can around central axis 3 rotate, under the action of coarse-pitch thread 31, central axis 3 realize compared with
Fast moves up and down；Vernier knob 5 can be rotated around central axis 3, and under the action of fine thread 32, central axis 3 is realized slower
Move up and down.
Specific embodiment 3: illustrating that present embodiment, third described in present embodiment limit annulus in conjunction with Fig. 1 to Fig. 4
It is set on 23 inner circumferential side wall there are two limited block 231, sets that there are two limiting slots 35 on the excircle side wall of central axis 3, each
Limiting slot 35 is arranged along short transverse, and each limited block 231, which respectively corresponds, to be inserted into a limiting slot 35.It is other composition and
Connection type is identical with embodiment two.
It is designed in this way limited block 231 to be installed in limiting slot 35, can move up and down central axis 3 but cannot occur to turn
It is dynamic.
Two limited blocks 231 are oppositely arranged in present embodiment, and two limiting slots 35 are oppositely arranged.
Specific embodiment 4: illustrate present embodiment in conjunction with Fig. 1 to Fig. 3,5 lower end of vernier knob described in present embodiment
Lateral wall on along the circumferential direction be equipped with trimming scale line 51, the 4th limit annulus 24 excircle side wall on set along the vertical direction
The reference line for having trimming scale line 51 to read is equipped with coarse adjustment graduation mark 33 along short transverse on the excircle side wall of central axis 3, the
The reference line that the lower end surface of four limit annulus 24 is read as coarse adjustment graduation mark 33.Other compositions and connection type and specific implementation
Mode one, 2 is three identical.
Being designed in this way can be realized by trimming scale line 51 and coarse adjustment graduation mark 33 to vernier knob 5 and coarse adjustment knob 4
Accurate adjustment, in order to observe.
Specific embodiment 5: illustrating present embodiment, upper test specimen peace described in present embodiment in conjunction with Fig. 1, Fig. 5 and Fig. 9
The shape of encapsulation 6 is cylindrical body, and the upper end of upper test specimen installation set 6 and the lower end of central axis 3 are affixed, upper test specimen installation set 6
The internal diameter of lower end is identical as the outer diameter of upper test specimen 8, and the first lock-bit bolt 62 is installed in the bottom side of the wall of upper test specimen installation set 6.
Other compositions and connection type are identical as specific embodiment four.
Being designed in this way can be mounted on upper test specimen 8 in upper test specimen installation set 6, and screw the first lock-bit bolt 62, make it
End holds out against the lateral wall of test specimen 8, realizes the locking positioning to upper test specimen 8.
The excircle side wall of 3 lower end of central axis is equipped with lower screw thread 34, the upper end of upper test specimen installation set 6 in present embodiment
It is threadedly coupled with lower screw thread 34.
Specific embodiment 6: illustrating present embodiment, upper test specimen peace described in present embodiment in conjunction with Fig. 1, Fig. 5 and Fig. 9
The internal diameter of 6 upper end of encapsulation is identical as the outer diameter of central axis 3, and the upper end of upper test specimen installation set 6 is sleeved on the outer of 3 lower end of central axis
Side is installed with the second lock-bit bolt 61, the end of the second lock-bit bolt 61 and central axis on the upper end side wall of upper test specimen installation set 6
3 lateral wall cooperation.Other compositions and connection type are identical as specific embodiment five.
It is designed in this way to realize and be locked to the fixed of upper test specimen installation set 6.
Specific embodiment 7: illustrating present embodiment, lower examination described in present embodiment in conjunction with Fig. 1, Fig. 6, Fig. 7 and Fig. 9
The shape of part installation set 7 is cylindrical body, and the lower end of lower test specimen installation set 7 is fixed on pedestal 25, and pedestal 25 and bracket 1 are solid
It connects, the upper end of spring 71 is equipped with sliding block 72, and the shape of sliding block 72 is cylindrical body, the outer diameter of sliding block 72 and lower test specimen installation set 7
Internal diameter is identical, is installed with third lock-bit bolt 74 in the middle part of sliding channel of lower test specimen installation set 7, the end of third lock-bit bolt 74 with
The lateral wall of sliding block 72 cooperates, and the internal diameter of lower 7 upper end of test specimen installation set is identical as the outer diameter of lower test specimen 9, lower test specimen installation set 7
The 4th lock-bit bolt 73 is installed on the side wall of upper end.Other compositions and connection type and specific embodiment one, two, three, five or
Six is identical.
Being designed in this way can be mounted on lower test specimen 9 in lower test specimen installation set 7, and screw the 4th lock-bit bolt 73, make it
End holds out against the lateral wall of lower test specimen 9, realizes the locking positioning to lower test specimen 9.
Specific embodiment 8: illustrating present embodiment, lower examination described in present embodiment in conjunction with Fig. 1, Fig. 6, Fig. 7 and Fig. 9
The middle part of part installation set 7 is equipped with observation window 76, and observation window 76 is arranged along short transverse, and the shape of observation window 76 is strip, sees
The position for examining window 76 is corresponding with the position of sliding block 72, and the length of observation window 76 is greater than the height of sliding block 72.It is other composition and
Connection type is identical as specific embodiment seven.
It is designed in this way through observation window 76 it can be observed that the position of sliding block 72.The lower end of observation window 76 in present embodiment
In the lower section of 72 lower end surface of sliding block, the upper end of observation window 76 is in the top of 72 upper surface of sliding block, so that the position of sliding block 72 can
It is observed completely by observation window 76.
Specific embodiment 9: illustrating present embodiment in conjunction with Fig. 1, Fig. 6, Fig. 7 and Fig. 9, observed described in present embodiment
The two sides of window 76 are equipped with sliding block graduation mark 75 along its length.Other compositions and connection type and eight phase of specific embodiment
Together.
It is designed in this way the elaborate position that can accurately read 72 upper end of sliding block or lower end.
Specific embodiment 10: embodiment is described with reference to Fig. 1, the first limit annulus 21 described in present embodiment passes through
First support arm 11 and bracket 1 are affixed, and the second limit annulus 22 is affixed by the second support arm 12 and bracket 1, third limit circle
Ring 23 is affixed by third support arm 13 and bracket 1, and the 4th limit annulus 24 is affixed by the 4th support arm 14 and bracket 1, bottom
Seat 25 is affixed by the 5th support arm 15 and bracket 1.Other compositions and connection type are identical as specific embodiment eight or nine.
Working principle
Apparatus of the present invention use process is as follows:
Upper test specimen 8 is put into upper test specimen installation set 6 first, holds out against the upper end of test specimen 8 inside test specimen installation set 6
Upper surface tightens the first lock-bit bolt 62, is fixed on test specimen 8 in test specimen installation set 6.
Lower test specimen 9 is put into lower test specimen installation set 7, observation 72 upper end of sliding block corresponds to the scale value of sliding block graduation mark 75
X1.Then coarse adjustment knob 4 is rotated, test specimen 8 is moved down, after upper test specimen 8 and the contact of lower test specimen 9, continues to rotate coarse adjustment rotation
Button 4 moves down two test specimens and sliding block 72, so that the compression of spring 71 is shortened, by reading 72 upper end sliding block graduation mark of sliding block
75 corresponding scales, to calculate the compressed length of spring 71.Certain particular value X is reached by reduction length to spring 710When, sliding block
The corresponding scale value in 72 upper ends is X2, wherein X2=X1-X0, coarse adjustment knob of stopping rotating at this time 4.Then third lock-bit spiral shell is tightened
Bolt 74 and the 4th lock-bit bolt 73.Registration L at this time is read in conjunction with coarse adjustment graduation mark 33 and trimming scale line 511.It is herein mark
Fixed zero shift point position, referring to Fig. 8.
Then rotation coarse adjustment knob 4 makes test specimen 8 move up 5mm or so, and diameter is then slightly less than test specimen diameter, thickness
The pitch thin slice of degree about 1mm is placed at the center of lower test specimen 9.
Then start-up temperature case 2 makes the temperature in sweat box 2 be increased to specific temperature (generally 160 DEG C to 180 DEG C).
It is maintained at the specific temperature 5 minutes, makes the abundant heating and melting of pitch thin slice at viscous liquid.
Assuming that asphalt membrane 10 is in the sandwich test specimen that needs make with a thickness of L0, then need through control coarse adjustment knob 4 and micro-
Adjust knob 5 that its registration is made to reach L2, wherein L2=L1+L0.Concrete operations are as follows: first rotation coarse adjustment knob 4 make test specimen 8 to
Lower movement is moved to close to specific position L2When, rotary fine adjustment knob 5 makes lower test specimen 9 slowly be moved downward to L2Stop when position
Only.
It is then shut off sweat box 2, the door of sweat box 2 is opened, test specimen temperature is made to be reduced to room temperature.Room temperature is reduced to test specimen
Afterwards, the first lock-bit knob 62 and the 4th lock-bit knob 73 are opened.Rotation coarse adjustment knob 4 moves up 8 slot of test specimen, until can
Taking-up is gathered materials the-sandwich test specimen of bitumen-aggregate.Finally, taking out the-sandwich test specimen of bitumen-aggregate that gathers materials, health 24 at room temperature are placed
Hour, it is subsequently used for various experiments of machanics.
Coarse adjustment knob 4 rotates 50 microns of circle center axis movement, passes through the multiple value that coarse adjustment graduation mark 33 reads 50 microns.
Vernier knob 5 rotates 5 microns of circle center axis movement, and 100 equidistant trimming scales are arranged in 5 surrounding of vernier knob
Line 51, therefore one scale of every rotation, central axis 3 are 0.1 micron mobile.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that can be carried out to exemplary embodiment
Many modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims
And range.It should be understood that different appurtenances can be combined by being different from mode described in original claim
Benefit requires and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used
In other described embodiments.
Claims (10)
1. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness, it is characterised in that: described one kind can be controlled accurately
The sandwich specimen molding device of asphalt membrane thickness processed includes bracket (1), sweat box (2), central axis (3), coarse adjustment knob (4), micro-
Knob (5), upper test specimen installation set (6) and lower test specimen installation set (7), central axis (3) is adjusted to be arranged along the vertical direction, central axis (3)
On be from top to bottom successively installed with coarse adjustment knob (4) and vernier knob (5), the upper end of coarse adjustment knob (4) is equipped with the first limit circle
Ring (21), the lower end of coarse adjustment knob (4) are equipped with the second limit annulus (22), and the upper end of vernier knob (5) is equipped with third limit circle
Ring (23), the lower end of vernier knob (5) are equipped with the 4th limit annulus (24), the first limit annulus (21), the second limit annulus
(22), third limit annulus (23) and the 4th limit annulus (24) are sleeved on central axis (3), the first limit annulus (21),
Second limit annulus (22), third limit annulus (23) and the 4th limit annulus (24) are affixed with bracket (1) respectively, central axis
(3) lower end is equipped with upper test specimen installation set (6), test specimen installation set (7) under being arranged right below of upper test specimen installation set (6), lower examination
The internal lower end of part installation set (7) is equipped with spring (71), and upper test specimen installation set (6) and lower test specimen installation set (7) are arranged at temperature
It spends in case (2).
2. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 1, it is characterised in that:
The upper end outer circumferential side wall of the central axis (3) is equipped with coarse-pitch thread (31), the inner circumferential side wall and coarse-pitch thread of coarse adjustment knob (4)
(31) it is threadedly engaged, the lower end excircle side wall of central axis (3) is equipped with fine thread (32), the inner circumferential side of vernier knob (5)
Wall is threadedly engaged with fine thread (32).
3. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 2, it is characterised in that:
There are two being set on the inner circumferential side wall of third limit annulus (23) limited block (231), on the excircle side wall of central axis (3)
If each limiting slot (35) is arranged along short transverse there are two limiting slot (35), each limited block (231) respectively corresponds inserting
In a limiting slot (35).
4. a kind of according to claim 1,2 or 3 sandwich specimen molding device for accurately controlling asphalt membrane thickness, feature
It is: is along the circumferential direction equipped with trimming scale line (51) on the lateral wall of vernier knob (5) lower end, the 4th limit annulus
(24) reference line of trimming scale line (51) reading, the excircle of central axis (3) are equipped on excircle side wall along the vertical direction
Coarse adjustment graduation mark (33) are equipped with along short transverse on side wall, the lower end surface of the 4th limit annulus (24) is as coarse adjustment graduation mark (33)
The reference line of reading.
5. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 4, it is characterised in that:
The shape of the upper test specimen installation set (6) is cylindrical body, the upper end of upper test specimen installation set (6) and the lower end of central axis (3)
Affixed, the internal diameter of upper test specimen installation set (6) lower end is identical as the outer diameter of upper test specimen (8), the bottom side of the wall of upper test specimen installation set (6)
On be installed with the first lock-bit bolt (62).
6. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 5, it is characterised in that:
The internal diameter of upper test specimen installation set (6) upper end is identical as the outer diameter of central axis (3), the upper end suit of upper test specimen installation set (6)
It is installed with the second lock-bit bolt (61) on the outside of central axis (3) lower end, the upper end side wall of upper test specimen installation set (6), second
The end of lock-bit bolt (61) and the lateral wall of central axis (3) cooperate.
7. a kind of according to claim 1, the sandwich specimen molding device for accurately controlling asphalt membrane thickness of 2,3,5 or 6,
Be characterized in that: the shape of the lower test specimen installation set (7) is cylindrical body, and the lower end of lower test specimen installation set (7) is fixed in bottom
On seat (25), pedestal (25) and bracket (1) are affixed, and the upper end of spring (71) is equipped with sliding block (72), and the shape of sliding block (72) is circle
Cylinder, the outer diameter of sliding block (72) is identical as the internal diameter of lower test specimen installation set (7), revolves in the middle part of sliding channel of lower test specimen installation set (7)
Equipped with third lock-bit bolt (74), the end of third lock-bit bolt (74) and the lateral wall of sliding block (72) cooperate, lower test specimen installation
The internal diameter for covering (7) upper end is identical as the outer diameter of lower test specimen (9), and the 4th lock is installed on the upper end side wall of lower test specimen installation set (7)
Position bolt (73).
8. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 7, it is characterised in that:
The middle part of the lower test specimen installation set (7) is equipped with observation window (76), and observation window (76) is arranged along short transverse, observation window (76)
Shape is strip, and the position of observation window (76) is corresponding with the position of sliding block (72), and the length of observation window (76) is greater than cunning
The height of block (72).
9. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 8, it is characterised in that:
The two sides of the observation window (76) are equipped with sliding block graduation mark (75) along its length.
10. a kind of sandwich specimen molding device for accurately controlling asphalt membrane thickness according to claim 8 or claim 9, feature
Be: first limit annulus (21) is affixed by the first support arm (11) and bracket (1), and the second limit annulus (22) passes through
Second support arm (12) and bracket (1) are affixed, and third limit annulus (23) is affixed by third support arm (13) and bracket (1),
4th limit annulus (24) is affixed by the 4th support arm (14) and bracket (1), pedestal (25) by the 5th support arm (15) and
Bracket (1) is affixed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910713404.8A CN110376038B (en) | 2019-08-02 | 2019-08-02 | Sandwich test piece forming device capable of accurately controlling thickness of asphalt film |
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|---|---|---|---|
| CN201910713404.8A CN110376038B (en) | 2019-08-02 | 2019-08-02 | Sandwich test piece forming device capable of accurately controlling thickness of asphalt film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111624076A (en) * | 2020-07-22 | 2020-09-04 | 欧频 | Total alpha and total beta radioactivity measurement sample preparation method and device |
| CN111624077A (en) * | 2020-07-22 | 2020-09-04 | 欧频 | Total alpha and total beta radioactivity measurement sample preparation device and method |
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