CN207502279U - Marshall stability test instrument - Google Patents
Marshall stability test instrument Download PDFInfo
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- CN207502279U CN207502279U CN201721601661.5U CN201721601661U CN207502279U CN 207502279 U CN207502279 U CN 207502279U CN 201721601661 U CN201721601661 U CN 201721601661U CN 207502279 U CN207502279 U CN 207502279U
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Abstract
The utility model discloses Marshall stability test instrument, solves calibration this period in installation piece fixture and displacement sensor, piece fixture temperature is influenced to reduce by external environment, the problem of influencing the accuracy of result of the test, its key points of the technical solution are that：Including pedestal, actuating unit and the clamp assembly being placed on actuating unit, the pedestal end face is fixedly connected with the preheating ring flat-plate set along four chow ring of clamp assembly, preheating ring flat-plate inner wall is equipped with the resistance wire being electrically connected with preheating ring flat-plate internal battery, preheating ring flat-plate is equipped with the button for resistance wire to be controlled to open and close, and has the effect happened that piece fixture temperature is avoided to be affected by the external environment and reduce result of the test accuracy.
Description
Technical field
The utility model is related to technical field of quality detection, more specifically, it relates to Marshall stability test instrument.
Background technology
Marshall stability test instrument is measured the stability and flow valuve of the asphalt of different ratio, at present horse
Xie Er stabilitys analyzer departure work and two kinds automatic.
Chinese patent notification number CN203011794U is now retrieved, the day for announcing is on June 19th, 2013, and the program discloses
A kind of Marshall tester including stent, actuating unit is equipped in the bottom of stent, test specimen is connected on the actuating unit
Fixture, the stent are equipped with hold-down mechanism, and the piece fixture is equipped with several displacement sensors, the compacting machine
Structure is equipped with pressure sensor, and the displacement sensor and pressure sensor are connect with data storage device, the examination
The Upper gasket and lower gasket that can be coincide with piece fixture are equipped on the inside of part fixture, the Upper gasket and lower gasket pass through detachable
Structure connects.
Existing Marshall tester in its detection process, needs to put the Marshall impact experiment part of pre-production
Certain time is conserved in water bath with thermostatic control, is mounted in piece fixture, then piece fixture is placed on lifting after taking out experimental piece
On platform, displacement sensor is finally installed, booting determines the Marshall stability and flow valuve of the experimental piece；Standard provides, in horse
Before Xie Er experiments, it is necessary to piece fixture is placed in Water Tank with Temp.-controlled or baking oven to reach the temperature identical with test specimen；But
Be installed, piece fixture temperature, which is affected by the external environment, to be reduced, meeting calibration this period of piece fixture and displacement sensor
Influence the accuracy of result of the test.
Utility model content
The purpose of this utility model is to provide Marshall stability test instrument, has and avoids piece fixture temperature by extraneous ring
Border influences and reduces the effect happened of result of the test accuracy.
The above-mentioned technical purpose of the utility model technical scheme is that：Marshall stability test
Instrument, including pedestal, actuating unit and the clamp assembly being placed on actuating unit, the pedestal end face is fixedly connected with along fixture
The preheating ring flat-plate that four chow ring of component is set, preheating ring flat-plate inner wall are equipped with the resistance wire being electrically connected with preheating ring flat-plate internal battery,
Preheating ring flat-plate is equipped with the button for resistance wire to be controlled to open and close.
By using above-mentioned technical proposal, clamp assembly can be kept the temperature using resistance wire fever, avoid clamp assembly
Temperature be affected by the external environment and reduce happening for result of the test accuracy；The preheating ring flat-plate that ring is set can make resistance wire pair
Clamp assembly surrounding is carried out at the same time heat preservation, improves the reliability that resistance wire uses.
The utility model is further arranged to：The preheating ring flat-plate is the arc ring that upper and lower ends are drawn close to central shaft
Plate.
By using above-mentioned technical proposal, using the preheating ring flat-plate of arc, convenient for concentrating preheating to clamp assembly,
It prevents the decline of clamp assembly temperature is excessive from happening, improves the working efficiency of resistance wire.
The utility model is further arranged to：The preheating ring flat-plate top ring is equipped with thermal insulation board, in thermal insulation board sloped-end
It is directed toward preheating ring flat-plate central shaft.
By using above-mentioned technical proposal, using the thermal insulation board being obliquely installed, the air after preheating can be made to clamp assembly
Top center convergence, kept the temperature convenient for the top to clamp assembly.
The utility model is further arranged to：The thermal insulation board inner wall is equipped with heat insulation layer.
By using above-mentioned technical proposal, using heat insulation layer, thermal insulation board is avoided to carry out heat transfer with the air after preheating
It happens, improves the practicability of thermal insulation board.
The utility model is further arranged to：The clamp assembly includes upper fixture and lower fixture, preheating ring flat-plate upper surface
Vertical height be not more than lower fixture upper surface vertical height.
By using above-mentioned technical proposal, during resistance wire generates heat, can first concentrate to the air near lower fixture
It is preheated, the air after preheating again keeps the temperature upper fixture during floating, reduces in resistance wire warm
The energy consumed.
The utility model is further arranged to：The preheating ring flat-plate lower loop is equipped with horizontally disposed annular bottom plate.
By using above-mentioned technical proposal, using annular bottom plate, the air after preheating can be prevented from the lower end of preheating ring flat-plate
Mouth outflow happens, and improves the reliability that preheating ring flat-plate uses.
The utility model is further arranged to：The annular bottom plate bottom surface is fixedly connected with multiple inserted links, and pedestal end face is set
There is the jack for inserted link grafting.
By using above-mentioned technical proposal, using inserted link and jack grafting, convenient for preheating the installation and dismounting of ring flat-plate.
The utility model is further arranged to：The thermal insulation board side wall is equipped with the display for showing Resistant heating temperature
Screen and the adjusting knob for regulation resistance silk heating temperature.
By using above-mentioned technical proposal, using display screen, convenient for observing the preheating situation of resistance wire；It is revolved using adjusting
Button, convenient for the preheating temperature of regulation resistance silk.
The utility model is further arranged to：The actuating unit includes being used for the top plate of placing clamp component and vertically set
The mandril put, mandril are fixedly connected with top board undersurface；Mandril is coaxially arranged with the pressing plate that can be contradicted with pedestal, and pedestal end face is equipped with
The triggering button being electrically connected with button；When pressing plate and pedestal contradict, pressing plate pushes down triggering button；Triggering button is electrically connected with to control
The control circuit that resistance wire is powered off as pressing plate moves up.
By using above-mentioned technical proposal, when actuating unit driving top plate moves up, band dynamic pressure plate moves up, and triggering button is in nothing
Original state is returned under pressure effect, resistance wire can be made to stop generating heat after powering off by control circuit, resistance wire is avoided to continue
Generate heat and influence happening for the accuracy of experiment.
The utility model is further arranged to：The control circuit includes the first relay, the second relay, the first relay
The normally opened contact switch KM1-1 of device, the normally-closed contact switch KM2-1 and normally closed travel switch ST of the second relay, normally closed stroke
Switch ST is placed in triggering button；One end is electrically connected with the power supply after described button one end is connected with resistance wire, the other end and first
It is grounded after relay series connection；The normally opened contact switch KM1-1 of the first relay and normally-closed contact switch KM2-1 of the second relay
It is in parallel with button after series connection；Described normally closed travel switch ST one end is electrically connected with the power supply, and the other end is connected with the second relay
After be grounded.
By using above-mentioned technical proposal, start button obtains the first relay coil electric, makes to be connected in parallel in start button
The normally opened contact switch KM1-1 of the first relay be closed, realize the self-locking of circuit, resistance wire generates heat after being powered；When on pressing plate
After shifting, triggering button unclamps, and normally closed travel switch ST is closed, and obtains the second relay coil electric, while make the normal of the second relay
Closed contact switch KM2-1 is opened, and so as to power off the first relay coil, stops fever after resistance wire power-off.
In conclusion the utility model has the advantages that：Clamp assembly can be protected using resistance wire fever
Temperature avoids the temperature of clamp assembly from being affected by the external environment and reduce happening for result of the test accuracy；It is set using inclination
The thermal insulation board put can make top center convergence of the air after preheating to clamp assembly, convenient for being carried out to the top of clamp assembly
Heat preservation；Using annular bottom plate, happening for lower port outflow of the air after preheating from preheating ring flat-plate can be prevented；With display
Screen, convenient for observing the preheating situation of resistance wire；Using adjusting knob, convenient for the preheating temperature of regulation resistance silk；Work as actuating unit
When driving top plate moves up, resistance wire can be made to stop generating heat after powering off by control circuit.
Description of the drawings
Fig. 1 is the overall structure diagram in embodiment；
Fig. 2 is the structure diagram that ring flat-plate is preheated in embodiment；
Fig. 3 is the attachment structure schematic diagram of embodiment center platen and triggering button；
Fig. 4 is the schematic diagram of control circuit in embodiment.
In figure：1st, pedestal；11st, control panel；2nd, hold-down mechanism；21st, column；22nd, crossbeam；23rd, pressure sensor；3rd, it presss from both sides
Has component；31st, upper fixture；32nd, lower fixture；33rd, displacement sensor；4th, ring flat-plate is preheated；41st, inserted link；411st, jack；42nd, resistance
Silk；43rd, annular bottom plate；44th, thermal insulation board；441st, heat insulation layer；45th, button；46th, display screen；47th, adjusting knob；48th, the first relay
Device；49th, the second relay；5th, button is triggered；6th, actuating unit；61st, top plate；62nd, mandril；63rd, pressing plate.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment：Marshall stability test instrument, as shown in Figure 1, including pedestal 1, actuating unit 6, being placed on engine
Clamp assembly 3 and hold-down mechanism 2 on structure 6, hold-down mechanism 2 include two vertically arranged columns 21, and two columns 21 are solid
Surely horizontally disposed crossbeam 22 is connected with, the side of crossbeam 22 towards pedestal 1 is fixedly connected with vertically arranged pressure sensor
23；For clamp assembly 3 for clamping experimental piece, clamp assembly 3 is equipped with the displacement sensor 33 for measurement experiment part deformation quantity, bottom
1 end face of seat is equipped with control panel 11；It is vertically movable that component 3 can be driven fixture to by actuating unit 6, when 3 top of clamp assembly with
After pressure sensor 23 contradicts, pressure sensor 23 is started to work.
As shown in Figures 1 and 2,1 end face of pedestal is fixedly connected with the preheating ring flat-plate 4 set along 3 four chow ring of clamp assembly, preheating
4 inner wall of ring flat-plate is equipped with the resistance wire 42 being electrically connected with preheating 4 internal battery of ring flat-plate, and 4 side of preheating ring flat-plate is equipped with to control
The button 45 that resistance wire 42 processed opens and closes；Clamp assembly 3 can be kept the temperature using the fever of resistance wire 42, avoid clamp assembly 3
Temperature is affected by the external environment and reduces happening for result of the test accuracy；The preheating ring flat-plate 4 that ring is set can make resistance wire 42
Heat preservation is carried out at the same time to 3 surrounding of clamp assembly, improves the reliability that resistance wire 42 uses.
As shown in Figure 2 and Figure 3, preheating ring flat-plate 4 is the arc ring flat-plate that upper and lower ends are drawn close to central shaft, utilizes arc
Ring flat-plate 4 is preheated, convenient for concentrating preheating to clamp assembly 3, prevents the decline of 3 temperature of clamp assembly is excessive from happening,
Improve the working efficiency of resistance wire 42.
It preheats 4 top ring of ring flat-plate and is equipped with thermal insulation board 44, preheating 4 central shaft of ring flat-plate is directed toward in 44 sloped-end of thermal insulation board；Profit
With the thermal insulation board 44 being obliquely installed, top center convergence of the air after preheating to clamp assembly 3 can be made, convenient for clamp assembly
3 top is kept the temperature.
44 inner wall of thermal insulation board is equipped with heat insulation layer 441, using heat insulation layer 441, avoids thermal insulation board 44 and the air after preheating
Happening for heat transfer is carried out, improves the practicability of thermal insulation board 44.
Clamp assembly 3 includes upper fixture 31 and lower fixture 32, and the vertical height of 4 upper surface of preheating ring flat-plate is not more than lower fixture
The vertical height of 32 upper surfaces, preheating 4 upper surface of ring flat-plate maintains an equal level with lower 32 upper surface of fixture in the present embodiment；It is sent out in resistance wire 42
Heat process in, can first concentrate and the air near lower fixture 32 is preheated, the air after preheating during floating again
Upper fixture 31 is kept the temperature, reduces the energy consumed in 42 warm of resistance wire.
It preheats 4 lower loop of ring flat-plate and is equipped with horizontally disposed annular bottom plate 43, using annular bottom plate 43, can prevent after preheating
Air is happened from the lower port outflow of preheating ring flat-plate 4, improves the reliability that preheating ring flat-plate 4 uses.
Annular bottom plate 43 is fixedly connected backwards to the bottom surface for preheating ring flat-plate 4 there are four inserted link 41, and four inserted links 41 are along annular bottom
The circumferencial direction of plate 43 is uniformly distributed, and 1 end face of pedestal is equipped with four jacks 411 for 41 grafting of inserted link；Using inserted link 41 with
411 grafting of jack, convenient for preheating the installation and dismounting of ring flat-plate 4.
44 side wall of thermal insulation board is equipped with to show the display screen 46 of 42 heating temperature of resistance wire and for regulation resistance silk 42
The adjusting knob 47 of heating temperature；Using display screen 46, convenient for observing the preheating situation of resistance wire 42；Using adjusting knob 47,
Convenient for the preheating temperature of regulation resistance silk 42.
Actuating unit 6 includes the top plate 61 for placing clamp component 3, vertically arranged mandril 62 and is placed in pedestal 1
Portion is used for the hydraulic cylinder that mandril 62 is driven to move（It is not shown in figure）, mandril 62 is fixedly connected with 61 bottom surface of top plate；Mandril 62 is same
Axis is provided with the pressing plate 63 that can be contradicted with pedestal 1, and 1 end face of pedestal is equipped with the triggering button 5 being electrically connected with button 45；When pressing plate 63 with
When pedestal 1 contradicts, pressing plate 63 pushes down triggering button 5；Triggering button 5 be electrically connected with for controlling resistance wire 42 as pressing plate 63 moves up and
The control circuit of power-off；When actuating unit 6 drives top plate 61 to move up, mandril 62 is moved up with dynamic pressure plate 63, and triggering button 5 is in no pressure
Original state is returned under power effect, resistance wire 42 can be made to stop generating heat after powering off by control circuit, resistance wire 42 is avoided to hold
Supervention is warm and influences happening for the accuracy of experiment.
As shown in Figure 3 and Figure 4, control circuit include the first relay 48, the second relay 49, the first relay 48 it is normal
Open the normally-closed contact switch KM2-1 and normally closed travel switch ST of contact switch KM1-1, the second relay 49, normally closed travel switch
ST is placed in triggering button 5；One end is electrically connected with the power supply after 45 one end of button is connected with resistance wire 42, the other end and the first relay
Device 48 is grounded after connecting；The normally-closed contact of the normally opened contact switch KM1-1 of first relay 48 and the second relay 49 switchs
It is in parallel with button 45 after KM2-1 series connection；Normally closed travel switch ST one end is electrically connected with the power supply, the other end and the second relay 49
It is grounded after series connection；Start button 45 obtains 48 coil of the first relay electric, makes the first relay being connected in parallel in start button 45
48 normally opened contact switch KM1-1 is closed, and realizes that the self-locking of circuit, resistance wire 42 are generated heat after being powered；After pressing plate 63 moves up, touch
Hair button 5 unclamps, and normally closed travel switch ST is closed, and obtains 49 coil of the second relay electric, while make the normally closed of the second relay 49
Contact switch KM2-1 is opened, so as to which 48 coil blackout of the first relay, resistance wire 42 be made to stop fever after powering off.
The course of work：Start button 45, can make resistance wire 42 be powered after first to the air preheat near lower fixture 32, preheating
Air afterwards again keeps the temperature upper fixture 31 during floating；When actuating unit 6 drives top plate 61 to move up, band dynamic pressure
Plate 63 moves up, and triggering button 5 is returned to original state under no pressure effect, resistance wire 42 can be made to stop after powering off by control circuit
It only generates heat, avoids 42 persistent fever of resistance wire and influence happening for the accuracy tested.
This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability
Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but
As long as it is all protected in the right of the utility model by Patent Law.
Claims (10)
1. Marshall stability test instrument, including pedestal (1), actuating unit (6) and the fixture group being placed on actuating unit (6)
Part (3), it is characterized in that：Pedestal (1) end face is fixedly connected with the preheating ring flat-plate (4) set along (3) four chow ring of clamp assembly, in advance
Hot ring flat-plate (4) inner wall is equipped with the resistance wire (42) being electrically connected with preheating ring flat-plate (4) internal battery, and preheating ring flat-plate (4) is equipped with
For the button (45) that resistance wire (42) is controlled to open and close.
2. Marshall stability test instrument according to claim 1, it is characterized in that：The preheating ring flat-plate (4) is upper and lower two
Hold the arc ring flat-plate drawn close to central shaft.
3. Marshall stability test instrument according to claim 2, it is characterized in that：Described preheating ring flat-plate (4) top ring is set
There is thermal insulation board (44), preheating ring flat-plate (4) central shaft is directed toward in thermal insulation board (44) sloped-end.
4. Marshall stability test instrument according to claim 3, it is characterized in that：Thermal insulation board (44) inner wall is equipped with
Heat insulation layer (441).
5. Marshall stability test instrument according to claim 4, it is characterized in that：The clamp assembly (3) includes upper folder
Have (31) and lower fixture (32), the vertical height of preheating ring flat-plate (4) upper surface is not more than the vertical height of lower fixture (32) upper surface
Degree.
6. Marshall stability test instrument according to claim 5, it is characterized in that：Described preheating ring flat-plate (4) lower loop is set
There is horizontally disposed annular bottom plate (43).
7. Marshall stability test instrument according to claim 6, it is characterized in that：Annular bottom plate (43) bottom surface is fixed
Multiple inserted links (41) are connected with, pedestal (1) end face is equipped with the jack (411) for inserted link (41) grafting.
8. Marshall stability test instrument according to claim 7, it is characterized in that：Thermal insulation board (44) side wall, which is equipped with, to be used
Display screen (46) in display resistance wire (42) heating temperature and the adjusting knob for regulation resistance silk (42) heating temperature
(47)。
9. Marshall stability test instrument according to claim 8, it is characterized in that：The actuating unit (6) is including being used for
The top plate (61) of placing clamp component (3) and vertically arranged mandril (62), mandril (62) are fixedly connected with top plate (61) bottom surface；
Mandril (62) is coaxially arranged with the pressing plate (63) that can be contradicted with pedestal (1), and pedestal (1) end face is equipped with what is be electrically connected with button (45)
Trigger button (5)；When pressing plate (63) and pedestal (1) contradict, pressing plate (63) pushes down triggering button (5)；Triggering button (5) is electrically connected with use
In control resistance wire (42) with pressing plate (63) move up and the control circuit that powers off.
10. Marshall stability test instrument according to claim 9, it is characterized in that：The control circuit include first after
Electric appliance (48), the second relay (49), the first relay (48) normally opened contact switch（KM1-1）, the second relay (49)
Normally-closed contact switchs（KM2-1）With normally closed travel switch (ST), normally closed travel switch (ST) is placed in triggering button (5)；It is described to press
One end is electrically connected with the power supply after button (45) one end is connected with resistance wire (42), and the other end is connected with the first relay (48) and is followed by
Ground；The normally opened contact switch of first relay (48)（KM1-1）It is switched with the normally-closed contact of the second relay (49)（KM2-1）String
It is in parallel with button (45) after connection；Described normally closed travel switch (ST) one end is electrically connected with the power supply, the other end and the second relay
(49) it is grounded after connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601661.5U CN207502279U (en) | 2017-11-27 | 2017-11-27 | Marshall stability test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601661.5U CN207502279U (en) | 2017-11-27 | 2017-11-27 | Marshall stability test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502279U true CN207502279U (en) | 2018-06-15 |
Family
ID=62506704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721601661.5U Active CN207502279U (en) | 2017-11-27 | 2017-11-27 | Marshall stability test instrument |
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| Country | Link |
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| CN (1) | CN207502279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655603A (en) * | 2019-01-17 | 2019-04-19 | 合肥工业大学 | Electromagnetism self-healing from collecting fixture after a kind of splitting of bitumen mixture specimen |
-
2017
- 2017-11-27 CN CN201721601661.5U patent/CN207502279U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655603A (en) * | 2019-01-17 | 2019-04-19 | 合肥工业大学 | Electromagnetism self-healing from collecting fixture after a kind of splitting of bitumen mixture specimen |
| CN109655603B (en) * | 2019-01-17 | 2021-06-29 | 合肥工业大学 | Self-collecting clamp for electromagnetic self-healing after splitting of asphalt mixture test piece |
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