CN207439802U - Marshall girder Apparatus for Bending at low-temp - Google Patents
Marshall girder Apparatus for Bending at low-temp Download PDFInfo
- Publication number
- CN207439802U CN207439802U CN201721604316.7U CN201721604316U CN207439802U CN 207439802 U CN207439802 U CN 207439802U CN 201721604316 U CN201721604316 U CN 201721604316U CN 207439802 U CN207439802 U CN 207439802U
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- China
- Prior art keywords
- column
- marshall
- pedestal
- bending
- zenith
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Abstract
The utility model discloses a kind of Marshall girder Apparatus for Bending at low-temp, its key points of the technical solution are that：Including pedestal, the pedestal is equipped with column, the column is equipped with zenith, the pedestal is equipped with chassis, the chassis is equipped with to place the placing device of test specimen, the placing device includes the upper flat plate being oppositely arranged and lower tablet, the upper flat plate and lower tablet are equipped with the arc plate of arc in opposite one side, the test specimen is placed between two arc plates, the positioning column of upper flat plate is provided through on the lower tablet, on the zenith displacement sensor is equipped with positioned at the top position of positioning column, the top of the upper flat plate is equipped with dynamometry block, on the zenith pressure sensor is equipped with positioned at the top position of dynamometry block, the pedestal is equipped with to drive the raised lifting mechanism in chassis.Contact area between arc plate and test specimen is larger, and test specimen is not likely to produce local deformation, Measurement reliability, accuracy higher during being oppressed.
Description
Technical field
The utility model is related to highway construction project apparatus field, more particularly to a kind of Marshall girder Apparatus for Bending at low-temp.
Background technology
Highroad build too busy to get away asphalt, asphalt be a kind of composite material, mainly by pitch,
Coarse aggregate, fine aggregate, miberal powder composition, the road surface that asphalt is laid with has surfacing, seamless, comfortable, vibration of driving a vehicle
Small, low noise, wear-resisting, airborne dust easy cleaning, construction time be not short, simple maintenance reproducible utilization, excellent suitable for stage construction etc.
Point, is widely adopted in highway construction.
Asphalt according to the difference of wherein bitumen aggregate ratio, stability, flow valuve, density, voidage, saturation factor etc. not yet
Together, therefore, it is necessary to measure to determine the optimal of asphalt to the above-mentioned parameter of asphalt before pavement construction
Bitumen aggregate ratio, Marshall Test are a kind of method for realizing such purpose, and experiment process is that the test specimen of standard impact density is being advised
It is pressurized under the conditions of fixed temperature and humidity etc., measures the indexs such as stability and the flow valuve of asphalt, after series of computation,
Bitumen aggregate ratio and stability, flow valuve, density, voidage, the relation curve of saturation degree are drawn out respectively, finally determine that pitch mixes
The optimum oil-stone ratio of material.Apparatus for Bending at low-temp is a kind of common Marshall Test equipment.
At present, the Chinese utility model patent that notification number is CN205898586U discloses a kind of asphalt bending examination
Test test device, it include babinet, supporting rack, console, displacement sensor, force snesor, first lifting measuring device and
Second lifting measuring device；Support is placed on babinet；Supporting rack is internally provided with platform built in the supporting rack containing through hole；The
One lifting measuring device is arranged at the top of supporting rack and is vertically acted on bitumen mixture specimen to be tested after supporting rack；
Second lifting measuring device is arranged in babinet and is vertically acted on after the through hole built in supporting rack among platform to be tested
On bitumen mixture specimen；First lifting measuring device and the second lifting measuring device are coaxial；Displacement sensor is arranged on
In one lifting measuring device；Force snesor is arranged in the second lifting measuring device；Displacement sensor and force snesor difference
It is connected with console.
Above-mentioned asphalt bend test test device is when testing test specimen, the contact between compression bar and test specimen
Area is smaller, and compression bar can force test specimen to generate local deformation, and then influence accuracy of measurement.
Utility model content
The purpose of this utility model is to provide a kind of Marshall girder Apparatus for Bending at low-temp, and advantage is tried to test specimen
When testing, test specimen stress equalization is not easy local deformation, and accuracy of measurement is high.
The above-mentioned technical purpose of the utility model technical scheme is that：A kind of Marshall girder is curved
Bent testing machine, including pedestal, the pedestal is equipped with column, and the column is equipped with zenith, and the pedestal is equipped with mounting hole,
It is slided on the mounting hole and is connected with mounting post, the top of the mounting post is equipped with chassis, and the chassis is equipped with to place examination
The placing device of part, the placing device include the upper flat plate being oppositely arranged and lower tablet, and the upper flat plate and lower tablet are in phase
To one side be equipped with the arc plate of arc, the test specimen is placed between two arc plates, is provided through on the lower tablet flat
The positioning column of plate, the top position that positioning column is located on the zenith are equipped with displacement sensor, and the top of the upper flat plate is equipped with
Dynamometry block, the top position that dynamometry block is located on the zenith are equipped with pressure sensor, and the pedestal is equipped with to drive bottom
The raised lifting mechanism of disk.
Through the above technical solutions, detected test specimen is placed between two arc plates, lifting mechanism is used to lift installation
Column and chassis rise, when chassis raises, upper flat plate and lower tablet raise together, when upper flat plate rises to certain altitude, dynamometry block
Pressure sensor is contradicted, positioning column contradicts displacement sensor, and two panels arc plate squeezes test specimen, when test specimen is deformed, according to position
The pressure data that the displacement data and pressure sensor that displacement sensor measures measure solves the correlations such as the stability of test specimen, flow valuve
Data.Contact area between arc plate and test specimen is larger, and test specimen is not likely to produce local deformation during being oppressed, and measurement is reliable
Property, accuracy higher.
The utility model is further arranged to：The mounting post is equipped with guide groove, and the side wall of the mounting hole is equipped with
Inject the guided way of guide groove.
Through the above technical solutions, by the /V of guided way and guide groove, mounting post to move up and down process more steady
Fixed reliable, mounting post is not easy to rotate during moving up and down.
The utility model is further arranged to：The lifting mechanism includes the adjustment gear being threaded in mounting post,
The both sides of the adjustment gear are equipped with the supporting block contradicted on pedestal, are engaged in the adjustment gear and are connected with worm screw, described
Worm screw is connected with the driving device that worm screw is driven to rotate.
Through the above technical solutions, the both sides of adjustment gear are equipped with the supporting block contradicted on pedestal, therefore adjust tooth
Wheel can not generate displacement along the axial of adjustment gear, and when rotating adjustment gear, mounting post rises or declines, and worm screw is with adjusting
Gear engagement connection, driving device drive adjustment gear to rotate for worm screw to be driven to rotate when worm screw rotates, and worm screw is with adjusting tooth
There is larger gearratio between wheel, therefore the output torque in adjustment gear is larger, the drive that adjustment gear can be more stable and reliable
Dynamic mounting post moves up and down.
The utility model is further arranged to：The driving device includes the driving motor being arranged on pedestal, the drive
The main shaft of dynamic motor is equipped with main pulley, and one end of the worm screw is equipped with from belt wheel, the main pulley and is equipped between belt wheel
Belt.
Through the above technical solutions, during driving motor energization work main pulley is driven to rotate, main pulley is driven by belt
It is rotated from belt wheel, and then worm screw follows rotation, belt rotational efficienty is high.Low noise.
The utility model is further arranged to：The pedestal is equipped with to contradict the supporting table of supporting block, the support
Platform is equipped with oil storage tank.
Through the above technical solutions, supporting table is used to support adjustment gear, supporting block is contradicted in supporting table, in oil storage tank
For storing lubricating oil, lubricating oil reduces the friction between supporting table and supporting block, facilitates the rotation of adjustment gear, reduce
Frictional dissipation in supporting block and supporting table.
The utility model is further arranged to：There are two the column is set.
Through the above technical solutions, two columns can preferably support zenith.
The utility model is further arranged to：The zenith is equipped with the connecting hole passed through for column, and the column is located at
Position below zenith is threaded with adjusting nut, and the position that the column is located above zenith is threaded with compression spiral shell
It is female.
Through the above technical solutions, column passes through connecting hole, day roof platform is fixed on vertical by adjusting nut and clamp nut
On column, adjusting nut is located at the lower section of day roof platform, and the height of day roof platform, thus zenith can be changed by changing the height of adjusting nut
Platform it is height-adjustable, day roof platform more flexible can use.
The utility model is further arranged to：There are two the positioning column is set.
Through the above technical solutions, two positioning columns both pass through upper flat plate, therefore will not be sent out between upper flat plate and lower tablet
It is raw to relatively rotate, during experiment, straggly, functional reliability height is not easy between upper flat plate and lower tablet.
The utility model is further arranged to：The upper end of the positioning column is equipped with positioning plate.
Through the above technical solutions, on the one hand, positioning plate causes upper flat plate to be not easy to depart from from positioning column, on the other hand,
Positioning plate increases the face area of positioning column, and positioning column is facilitated to contradict and touches displacement sensor.
In conclusion the utility model has the advantages that：
1st, by setting arc plate in the opposite one side of upper flat plate and lower tablet so that upper flat plate and lower tablet are in compressing test specimen
When and test specimen between contact area become larger, test specimen is not susceptible to local deformation, to test specimen carry out bend test when, to test specimen
Measurement result it is more accurate；
2nd, driving motor drives worm screw to rotate by belt, and worm engaging drives adjustment gear to rotate, and adjustment gear rotates
When driving mounting post move up and down, gearratio is big during entire driving, stable drive, mounting post to move up and down process steady
Reliably；
3rd, by setting oil storage tank in supporting table and store in oil storage tank lubricating oil, reduce supporting table and supporting block it
Between frictional force, facilitate the rotation of adjustment gear, reduce frictional dissipation between supporting table and supporting block.
Description of the drawings
Fig. 1 is the overall structure diagram of the present embodiment；
Fig. 2 is the sectional view that lifting mechanism structure is embodied in the present embodiment；
Fig. 3 is the structure diagram that driving device is embodied in the present embodiment.
Reference numeral：1st, pedestal；2nd, column；3rd, zenith；31st, connecting hole；4th, mounting hole；41st, guided way；5th, mounting post；
51st, guide groove；6th, chassis；7th, placing device；8th, upper flat plate；81st, dynamometry block；9th, lower tablet；10th, arc plate；11st, positioning column；
111st, positioning plate；12nd, displacement sensor；13rd, pressure sensor；14th, lifting mechanism；15th, adjustment gear；151st, supporting block；16、
Worm screw；17th, driving device；18th, driving motor；19th, main pulley；20th, from belt wheel；21st, belt；22nd, supporting table；221st, oil storage
Slot；23rd, adjusting nut；24th, clamp nut.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment：With reference to figure 1, a kind of Marshall girder Apparatus for Bending at low-temp, including pedestal 1, pedestal 1 is equipped with column 2, stands
Column 2 is equipped with parallel two, and two root posts 2 are equipped with zenith 3.Pedestal 1 is equipped with chassis 6, and placing device is placed on chassis 6
7, placing device 7 is used to place test specimen to be detected.
With reference to figure 1, placing device 7 includes upper flat plate 8 and lower tablet 9, and upper flat plate 8 and lower tablet 9 are arranged in parallel, upper flat plate
8 and the opposite one side of lower tablet 9 be equipped with arc plate 10, test specimen to be detected is placed between two arc plates 10, and arc plate 10 is arc
Shape, therefore the contact area between arc plate 10 and test specimen is larger, test specimen is pressurized in detection process is uniformly not likely to produce local change
Shape, detection accuracy higher.
With reference to figure 1, lower tablet 9 is equipped with positioning column 11, and positioning column 11 passes through upper flat plate 8, in the present embodiment, positioning column 11
If there are two and two positioning columns 11 are located at the both sides of arc plate 10, due to having the positioning of positioning column 11, upper flat plate 8 and lower tablet 9
Between be not susceptible to relatively rotate, when test specimen is placed in arc plate 10, upper flat plate 8 is lifted upwards i.e. along positioning column 11
It can.The top of upper flat plate 8 is equipped with dynamometry block 81, and zenith 3 is equipped with displacement sensor 12 and pressure sensor 13, displacement sensor
12 for detecting displacement, and pressure sensor 13 acts on the pressure on pressure sensor 13 for detection.Displacement sensor 12 with
The position of positioning column 11 corresponds to, and pressure sensor 13 is corresponding with the position of dynamometry block 81.With reference to figure 2, pedestal 1 is equipped with lifting machine
Structure 14, lifting mechanism 14 is for driving chassis 6 to move up and down, and during bend test, 14 lifting chassis 6 of lifting mechanism moves upwards,
When dynamometry block 81 is contradicted when on pressure sensor 13, test specimen forced compression, displacement sensor 12 detects pressure during test specimen stress
Contracting amount, the data detected by pressure sensor 13 and displacement sensor 12 calculate stability, flow valuve etc. of place's time
Related data.
With reference to figure 1, the top of positioning column 11 is equipped with positioning plate 111, on the one hand, positioning plate 111 so that upper flat plate 8 be not easy from
Depart from positioning column 11, on the other hand, positioning plate 111 increases the face area of positioning column 11, positioning column 11 is facilitated to contradict simultaneously
Touch displacement sensor 12.
With reference to figure 2, pedestal 1 is equipped with mounting hole 4, and the lower section on chassis 6 is equipped with mounting post 5, and mounting post 5 is slidably connected at peace
It fills in hole 4.Mounting post 5 is equipped with guide groove 51, and the inner wall of mounting hole 4 is equipped with guided way 41, passes through guided way 41 and guide groove
51 /V, mounting post 5 to move up and down process more reliable and more stable, mounting post 5 is not easy to rotate during moving up and down.Lift
Rising mechanism 14 includes the adjustment gear 15 being threaded in mounting post 5, and the both sides of adjustment gear 15 are equipped with supporting block 151, branch
Bracer 151 is contradicted on pedestal 1, is engaged in adjustment gear 15 and is connected with worm screw 16, worm screw 16 and the axial line of adjustment gear 15
Vertically.With reference to figure 3, worm screw 16 is connected with driving device 17, and driving device 17 is for driving worm screw 16 to rotate, when worm screw 16 rotates
Engagement drives adjustment gear 15 to rotate, since adjustment gear 15 cannot be moved along the axis direction of itself, adjustment gear
15 drive mounting post 5 to move up and down when rotating, and then chassis 6 moves up and down.Driving device 17 includes the drive being arranged on pedestal 1
Dynamic motor 18, the main shaft of driving motor 18 are equipped with main pulley 19, and one end of worm screw 16 is equipped with from belt wheel 20, main pulley 19 with from
It is connected with belt 21 between belt wheel 20, when 18 energization work of driving motor drives main pulley 19 to rotate, and main pulley 19 passes through belt
21 drives are rotated from belt wheel 20, and then worm screw 16 follows rotation.
With reference to figure 2, zenith 3 is equipped with connecting hole 31, and column 2 is passed through from connecting hole 31, and column 2 is positioned at zenith 3
Lower position is threaded with adjusting nut 23, and column 2 is being equipped with clamp nut 24 positioned at the top position of zenith 3, is passing through pressure
Zenith 3 is fixed on column 2 by tight nut 24 and adjusting nut 23, is changed the height of adjusting nut 23 and can be changed zenith 3
Highly, thus zenith 3 it is height-adjustable, zenith 3 more flexible can use.
With reference to figure 2, pedestal 1 is equipped with supporting table 22, and supporting table 22 is contacted with supporting block 151, and supporting table 22 is equipped with storage
Oil groove 221, oil storage tank 221 is for storing lubricating oil, and during the work time, lubricating oil is overflowed from oil storage tank 221, adjustment gear
During 15 rotation, lubricating oil reduces the frictional force between supporting table 22 and supporting block 151, facilitates the rotation of adjustment gear 15, subtracts
Frictional dissipation in small supporting block 151 and supporting table 22.
Operating procedure：Before start, by zenith, 3 adjust to proper height, it would be desirable to which the marshal piece of experiment is placed on
Between two arc plates 10, adjustment upper flat plate 8 position positioning column 11 is alignd with displacement sensor 12, pressure sensor 13 and
Dynamometry block 81 aligns.Start driving motor 18, chassis 6 drives and secretly puts device rising, and dynamometry block 81 contradicts pressure sensor 13, determines
Position column 11 contradicts displacement sensor 12, and the time is steady at the data calculating measured according to pressure sensor 13 and displacement sensor 12
The related datas such as fixed degree, flow valuve simultaneously draw out chart.After detection finishes or the time is destroyed, driving motor 18 inverts, chassis 6
Decline.
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 be subject to Patent Law.
Claims (9)
1. a kind of Marshall girder Apparatus for Bending at low-temp, which is characterized in that including pedestal (1), the pedestal (1) is equipped with column
(2), the column (2) is equipped with zenith (3), and the pedestal (1) is equipped with mounting hole (4), the company of slip on the mounting hole (4)
There is mounting post (5), the top of the mounting post (5) is equipped with chassis (6), and the chassis (6) is equipped with to place the peace of test specimen
Put device (7), the placing device (7) includes the upper flat plate (8) being oppositely arranged and lower tablet (9), the upper flat plate (8) and under
Tablet (9) is equipped with the arc plate (10) of arc in opposite one side, and test specimen is placed between two arc plates (10), the lower tablet
(9) positioning column (11) of upper flat plate (8) is provided through on, the top position that positioning column (11) is located on the zenith (3) is equipped with
Displacement sensor (12), the top of the upper flat plate (8) are equipped with dynamometry block (81), are located at dynamometry block (81) on the zenith (3)
Top position be equipped with pressure sensor (13), the pedestal (1) is equipped with for driving chassis (6) raised lifting mechanism
(14)。
2. Marshall girder Apparatus for Bending at low-temp according to claim 1, which is characterized in that the mounting post (5) is equipped with
Guide groove (51), the side wall of the mounting hole (4) are equipped with the guided way (41) for injecting guide groove (51).
3. Marshall girder Apparatus for Bending at low-temp according to claim 2, which is characterized in that the lifting mechanism (14) includes
The adjustment gear (15) being threaded in mounting post (5), the both sides of the adjustment gear (15), which are equipped with, to be contradicted on pedestal (1)
Supporting block (151), on the adjustment gear (15) engagement be connected with worm screw (16), the worm screw (16) is connected with to drive
The driving device (17) that worm screw (16) rotates.
4. Marshall girder Apparatus for Bending at low-temp according to claim 3, which is characterized in that the driving device (17) includes
The driving motor (18) being arranged on pedestal (1), the main shaft of the driving motor (18) are equipped with main pulley (19), the worm screw
(16) one end be equipped with from belt wheel (20), the main pulley (19) and between belt wheel (20) be equipped with belt (21).
5. Marshall girder Apparatus for Bending at low-temp according to claim 4, which is characterized in that the pedestal (1), which is equipped with, to be used
In the supporting table (22) for contradicting supporting block (151), the supporting table (22) is equipped with oil storage tank (221).
6. Marshall girder Apparatus for Bending at low-temp according to claim 1, which is characterized in that there are two the column (2) sets.
7. Marshall girder Apparatus for Bending at low-temp according to claim 6, which is characterized in that the zenith (3), which is equipped with, to supply
The connecting hole (31) that column (2) passes through, the position that the column (2) is located at below zenith (3) are threaded with adjusting nut
(23), the position that the column (2) is located above zenith (3) is threaded with clamp nut (24).
8. Marshall girder Apparatus for Bending at low-temp according to claim 1, which is characterized in that the positioning column (11) is equipped with two
It is a.
9. Marshall girder Apparatus for Bending at low-temp according to claim 8, which is characterized in that the upper end of the positioning column (11)
Equipped with positioning plate (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721604316.7U CN207439802U (en) | 2017-11-24 | 2017-11-24 | Marshall girder Apparatus for Bending at low-temp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721604316.7U CN207439802U (en) | 2017-11-24 | 2017-11-24 | Marshall girder Apparatus for Bending at low-temp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207439802U true CN207439802U (en) | 2018-06-01 |
Family
ID=62287789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721604316.7U Expired - Fee Related CN207439802U (en) | 2017-11-24 | 2017-11-24 | Marshall girder Apparatus for Bending at low-temp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207439802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142109A (en) * | 2018-08-02 | 2019-01-04 | 河北工业大学 | Shaft radial load loading device |
-
2017
- 2017-11-24 CN CN201721604316.7U patent/CN207439802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109142109A (en) * | 2018-08-02 | 2019-01-04 | 河北工业大学 | Shaft radial load loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180601 Termination date: 20201124 |