CN211013912U - Asphalt mixture maximum relative density tester - Google Patents
Asphalt mixture maximum relative density tester Download PDFInfo
- Publication number
- CN211013912U CN211013912U CN201921505627.7U CN201921505627U CN211013912U CN 211013912 U CN211013912 U CN 211013912U CN 201921505627 U CN201921505627 U CN 201921505627U CN 211013912 U CN211013912 U CN 211013912U
- Authority
- CN
- China
- Prior art keywords
- hole
- container
- negative pressure
- relative density
- maximum relative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to a maximum relative density tester of bituminous mixture, it includes shaking table, negative pressure container and air extractor, and the negative pressure container is placed on the shaking table, is connected with the manometer on the air extractor, is provided with the container lid on the negative pressure container, and the container lid passes through exhaust tube and air extractor intercommunication, and the container is covered and is provided with the through-hole, rotates on the through-hole to be connected with the shielding plate that shelters from the through-hole, and the shielding plate is provided with the rotation junction of through-hole and is used for the shielding plate towards through-hole pivoted elasticity piece that resets. When examining the instrument, push away atmospheric pressure pipe with baroceptor through the through-hole in the shielding plate enters into the negative pressure container, examine and determine the pressure in the negative pressure container to data after will examining and determine and data on the manometer are compared, and at this in-process, need not directly open the container lid, have guaranteed the gas tightness of examination in-process, the utility model discloses have the effect that improves the accuracy of examination result.
Description
Technical Field
The utility model relates to an engineering detects technical field, especially relates to bituminous mixture maximum relative density tester.
Background
The asphalt mixture is a general name of a mixture formed by mixing mineral aggregate and asphalt binder, is widely applied to the field of road engineering, and the theoretical maximum relative density of the asphalt mixture is a very important index of the asphalt mixture. In road construction sites and asphalt laboratories, the theoretical maximum relative density of asphalt is determined by an asphalt maximum relative density tester. When the asphalt mixture density test is carried out, the negative pressure container filled with water and the asphalt mixture needs to be vacuumized, the air pressure in the negative pressure container needs to be adjusted, then the vibration device is started and vacuumized, finally the negative pressure container is immersed in a constant temperature water tank, and finally the total mass of the container, the water and the asphalt mixture sample is weighed, so that the test is completed.
The main parameters of asphalt mixture control, such as the porosity of an asphalt mixture test piece, are calculated according to the theoretical maximum relative density, and the correctness of the main parameters directly influences the overall service performance of the mixture, so that the acquisition of the accurate theoretical maximum relative density in the construction process is very important. Particularly, after the negative pressure container is vacuumized, the air pressure in the negative pressure container needs to be adjusted, and at the moment, the pressure gauge on the instrument can display the air pressure in the negative pressure container. If the instrument is damaged, the deviation between the reading displayed on the pressure gauge and the real air pressure value in the negative pressure container is too large, and experimental data can be influenced.
In the existing verification of the instrument, particularly when some verification units verify the instrument, a negative pressure container subjected to vacuum treatment is directly opened, an air pressure sensor is put in the negative pressure container, and the air pressure in the negative pressure container is measured and then compared with a reading displayed on a pressure gauge. In the process, the negative pressure container can be measured only by opening the container cover and communicating the pressure pipe of the pressure sensor with the negative pressure container, and the container cover cannot completely cover the opening of the negative pressure container, so that the negative pressure container is not in a sealed state, and the final verification result is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a bituminous mixture maximum relative density tester has the advantage that improves the accuracy of examination result.
The above object of the present invention can be achieved by the following technical solutions:
the utility model provides a maximum relative density tester of bituminous mixture, includes shaking table, negative pressure container and air extractor, the negative pressure container place in on the shaking table, be connected with the manometer on the air extractor, be provided with the container lid on the negative pressure container, the container lid pass through the exhaust tube with the air extractor intercommunication, be provided with the through-hole on the container lid, it is connected with the shielding plate that shelters from to rotate on the through-hole, the shielding plate with the rotation junction of through-hole is provided with and is used for the shielding plate to reset towards through-hole pivoted elasticity.
When the instrument is checked, the container cover is covered on the negative pressure container, the air pump is started to vacuumize the negative pressure container, the pressure gauge displays the pressure in the negative pressure container, then the air pressure tube of the air pressure sensor pushes the baffle plate away through the through hole to enter the negative pressure container, the pressure in the negative pressure container is checked, the checked data is compared with the data on the pressure gauge, after the check is completed, the air pressure tube is pulled out, the baffle plate automatically resets under the action of the elastic reset piece, the through hole is blocked again, in the process, the container cover does not need to be directly opened, the air tightness in the checking process is guaranteed, and the checking result accuracy is improved.
The utility model discloses further set up to, the through-hole be outer in the container cover be provided with the first external screw thread end of through-hole intercommunication, first external screw thread end threaded connection has the screw cap.
Implement above-mentioned technical scheme, through being provided with first screw thread end to threaded connection upper thread cover on first external screw thread end makes the screw cap can further shelter from the through-hole, has guaranteed that the container lid covers the negative pressure container and carries out the gas tightness in the experimental in-process negative pressure container.
The utility model discloses further set up to, be provided with the support that is used for placing baroceptor on the vessel cover, be provided with the pipe clamp on the support, the support is along being on a parallel with the direction of the axis of through-hole is provided with and is used for the gliding spout of pipe clamp.
According to the technical scheme, in the verification process, the air pressure pipe of the air pressure sensor is fixed on the pipe clamp on the support, the pipe clamp slides along the length direction of the sliding groove, and the pipe clamp drives the air pressure pipe to penetrate through the through hole and push the shielding plate to enter the negative pressure container for verification.
The utility model discloses further set up to, the spout along its length direction be provided with the spring that the pipe clamp links to each other.
Implement above-mentioned technical scheme, through being provided with the spring, after the examination is accomplished, the elasticity that is convenient for the pipe clamp to pass through the spring drives the pneumatic tube fast and wears out from the through-hole.
The utility model discloses further set up to, the support with the connection can be dismantled to the container lid, be provided with the second external thread end on the container lid, the support with second external thread end threaded connection.
Implement above-mentioned technical scheme, be provided with the second external thread end on the container lid, carry out threaded connection with support and second external thread end, the support of being convenient for is installed and is dismantled through second external thread end and container lid.
The utility model discloses further set up to, be provided with the seal cover in the through-hole.
According to the technical scheme, the sealing sleeve is arranged in the through hole, so that when the air pressure pipe of the air pressure sensor enters the through hole, the sealing sleeve can reduce a gap between the air pressure pipe and the through hole, and the air tightness in the negative pressure container is guaranteed.
The utility model discloses further set up to, elasticity resets and is the torsional spring.
Implement above-mentioned technical scheme, reset the piece with elasticity and set up to the torsional spring, the shielding plate of being convenient for rotates through the torsional spring towards the through-hole fast after losing the butt of pneumatic tube and resets for the shielding plate shelters from the through-hole again.
The utility model discloses further set up to, the shielding plate orientation the one side of through-hole is provided with sealed the pad.
Implement above-mentioned technical scheme, the shielding plate is when sheltering from the through-hole, through being provided with sealed the pad for sealed pad has reduced the clearance between shielding plate and the through-hole, has guaranteed the gas tightness in the negative pressure container.
To sum up, the utility model discloses following beneficial effect has:
when an instrument is checked, a container cover is covered on a negative pressure container, an air pump is started to vacuumize the negative pressure container, a pressure gauge displays the pressure in the negative pressure container, then a pressure tube of an air pressure sensor pushes a baffle plate away through a through hole to enter the negative pressure container, the pressure in the negative pressure container is checked, the checked data are compared with the data on the pressure gauge, after the check is completed, the baffle plate automatically resets under the action of an elastic reset piece when the pressure tube is pulled out, the through hole is blocked again, and the container cover does not need to be directly opened in the process, so that the air tightness in the checking process is guaranteed, and the checking result accuracy is improved;
and secondly, the first threaded end is arranged, and the threaded connection upper threaded cover is arranged on the first external threaded end, so that the through hole can be further shielded by the threaded cover, and the air tightness in the negative pressure container during the process that the container cover covers the negative pressure container and performs the test is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an asphalt mixture maximum relative density tester according to an embodiment of the present invention;
FIG. 2 is an exploded view of a container lid according to an embodiment of the present invention;
FIG. 3 is a schematic view of the cover of the embodiment of the present invention showing the cover being rotated to open the shutter;
fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals: 1. a vibration table; 2. a negative pressure container; 3. an air extractor; 4. a pressure gauge; 5. a container cover; 6. an air exhaust pipe; 7. a through hole; 8. a shielding plate; 9. an elastic reset member; 10. a first externally threaded end; 11. a threaded cap; 12. a support; 13. a pipe clamp; 14. a chute; 15. a spring; 16. a second externally threaded end; 17. sealing sleeves; 18. and a gasket.
Detailed Description
The technical solution of the embodiment of the present invention will be described below with reference to the accompanying drawings.
Examples
As shown in figure 1, the tester for the maximum relative density of the asphalt mixture comprises a vibration table 1, a negative pressure container 2 and an air extractor 3. The negative pressure container 2 is provided with two container covers 5 for shielding the upper opening of the negative pressure container 2, and the two negative pressure containers 2 are respectively placed in the placing grooves on the vibration table 1. The air pump 3 is arranged in the machine body, is connected with the container cover 5 through the air pumping pipe 6 and is communicated with the negative pressure container 2 when the container cover 5 shields the negative pressure container 2, and the air pump 3 is also connected with a pressure gauge 4 for displaying the pressure in the negative pressure container 2 in the machine body.
Referring to fig. 1 and 2, the container cover 5 is provided with a through hole 7 communicated with the negative pressure container 2, and a sealing sleeve 17 is sleeved in the through hole 7. The through hole 7 is externally provided with a first external thread end 10 communicated with the through hole 7 on the container cover 5, and the first external thread end 10 is in threaded connection with a thread cover 11 for shielding the through hole 7. The container cover 5 is provided with a second external thread end 16, and the second external thread end 16 is in threaded connection with a bracket 12 for placing an air pressure sensor. The bracket 12 is provided with a sliding groove 14 along the axial direction parallel to the through hole 7, a pipe clamp 13 for fixing a pneumatic pipe of the pneumatic sensor is connected in the sliding groove 14 in a sliding manner along the length direction of the sliding groove, a spring 15 which extends and retracts along the length direction of the sliding groove 14 is fixed in the sliding groove 14, and the other end of the spring 15 is fixed with the pipe clamp 13.
With reference to fig. 3 and 4, the through hole 7 is rotatably connected with a shielding plate 8 for shielding the through hole 7 at a side of the container cover 5 close to the negative pressure container 2, an elastic resetting piece 9 for rotating the shielding plate 8 towards the through hole 7 is arranged at a rotational connection position of the shielding plate 8 and the through hole 7, and in this embodiment, the elastic resetting piece 9 is a torsion spring. One surface of the shielding plate 8 facing the through hole 7 is bonded with a sealing gasket 18 for reducing the gap between the shielding plate 8 and the edge of the through hole 7 when the shielding plate 8 shields the through hole 7.
The specific working process is as follows: when the instrument is checked, the bracket 12 is firstly connected with the second external thread end 16 on the container cover 5 in a threaded manner, and then the container cover 5 is covered on the negative pressure container 2 and tightly covered. The air pump 3 is started to pump vacuum in the negative pressure container 2 through the air pumping pipe 6, and the pressure gauge 4 displays the pressure in the negative pressure container 2. And then unscrewing the threaded cover 11, fixing the air pressure tube of the air pressure sensor in a tube clamp 13 of the bracket 12, sliding the tube clamp 13 towards the through hole 7 along the length direction of the chute 14, so that the tube clamp 13 drives the air pressure tube to penetrate into the through hole 7 to push the baffle plate 8 away, and then the air pressure tube enters the negative pressure container 2, so that the air pressure tube is communicated with the negative pressure container 2, calibrating the pressure in the negative pressure container 2 by the air pressure sensor, and comparing the data calibrated by the air pressure sensor with the data on the pressure gauge 4 by an operator.
After the verification is finished, the operating personnel loosens the pipe clamp 13, the pipe clamp 13 drives the air pressure pipe to rapidly penetrate out of the through hole 7 through the elasticity of the spring 15, the baffle plate 8 automatically resets under the action of the elastic resetting piece 9 of the torsion spring, and the through hole 7 is shielded again. The operator then removes the pneumatic tube from the tube clamp 13 and re-threads the threaded cap 11 with the first externally threaded end 10 to complete the calibration.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a bituminous mixture maximum relative density tester, includes shaking table (1), negative pressure container (2) and air extractor (3), its characterized in that, negative pressure container (2) place in on shaking table (1), be connected with manometer (4) on air extractor (3), be provided with container lid (5) on negative pressure container (2), container lid (5) through exhaust tube (6) with air extractor (3) intercommunication, be provided with through-hole (7) on container lid (5), it shelters from to rotate to be connected with on through-hole (7) shielding plate (8) of through-hole (7), shielding plate (8) with the rotation junction of through-hole (7) is provided with and is used for shielding plate (8) towards through-hole (7) pivoted elasticity piece (9) that resets.
2. The asphalt mixture maximum relative density tester according to claim 1, characterized in that a first external thread end (10) communicated with the through hole (7) is arranged on the container cover (5) outside the through hole (7), and the first external thread end (10) is in threaded connection with a threaded cover (11).
3. The asphalt mixture maximum relative density tester according to claim 1, characterized in that a bracket (12) for placing an air pressure sensor is arranged on the container cover (5), a pipe clamp (13) is arranged on the bracket (12), and a sliding groove (14) for sliding the pipe clamp (13) is arranged on the bracket (12) along a direction parallel to the axis of the through hole (7).
4. The asphalt mixture maximum relative density tester according to claim 3, characterized in that the chute (14) is provided with a spring (15) along its length connected to the pipe clamp (13).
5. The asphalt mixture maximum relative density tester according to claim 3, characterized in that the bracket (12) is detachably connected with the container cover (5), a second external thread end (16) is arranged on the container cover (5), and the bracket (12) is in threaded connection with the second external thread end (16).
6. The asphalt mixture maximum relative density tester according to claim 1, characterized in that a sealing sleeve (17) is arranged in the through hole (7).
7. The asphalt mixture maximum relative density tester according to claim 1, characterized in that the elastic return member (9) is a torsion spring.
8. The asphalt mixture maximum relative density tester according to claim 1, characterized in that a sealing gasket (18) is arranged on the side of the shielding plate (8) facing the through hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921505627.7U CN211013912U (en) | 2019-09-10 | 2019-09-10 | Asphalt mixture maximum relative density tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921505627.7U CN211013912U (en) | 2019-09-10 | 2019-09-10 | Asphalt mixture maximum relative density tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211013912U true CN211013912U (en) | 2020-07-14 |
Family
ID=71478437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921505627.7U Expired - Fee Related CN211013912U (en) | 2019-09-10 | 2019-09-10 | Asphalt mixture maximum relative density tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211013912U (en) |
-
2019
- 2019-09-10 CN CN201921505627.7U patent/CN211013912U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107677335B (en) | Device and method for measuring volume and porosity of object and vacuum gas sealing method | |
| CN107340101A (en) | A kind of sealing device gas tiny leakage evaluating apparatus and method | |
| CN103323537B (en) | Coupling device for realizing acquisition of acoustic emission signals in triaxial pressure cell | |
| CN102230875A (en) | Cement-based material porosity distribution testing method and device based on industrial X-ray tomography | |
| CN109949950A (en) | Reactor clad failure simulated experiment platform | |
| CN211013912U (en) | Asphalt mixture maximum relative density tester | |
| CN107894351A (en) | A kind of micro-sampler for medical inspection | |
| CN109238562A (en) | One kind is for inspection and caliberating device in hole pressure touching methods probe chamber | |
| CN106996851A (en) | Combined sealing cavity volume baroceptor caliberating device | |
| CN207232158U (en) | A kind of coal seam containing gas mechanical characteristic analogue experiment installation | |
| CN105987856A (en) | Vacuum drying moisture measurement device for down feather | |
| CN207929092U (en) | A kind of soil pH value detection agitating device | |
| JPH06207845A (en) | Method and device for measuring volume of piston combustion chamber | |
| CN202362035U (en) | A battery anode powder material tap density measuring device | |
| CN205786119U (en) | A kind of liquefied petroleum gas steel cylinder water test unit | |
| CN208223521U (en) | A kind of dust-proof levelling device of electric automatization instrument and meter | |
| Ting et al. | New techniques for measuring maximum reflectance of vitrinite and dispersed vitrinite in sediments | |
| CN208283348U (en) | A kind of number display titration instrument | |
| CN206974609U (en) | Combined sealing cavity volume baroceptor caliberating device | |
| CN202230007U (en) | Cement-based material porosity distribution testing device based on industrial X-ray tomography | |
| CN209264725U (en) | A kind of underground pipe gallery concrete shrinkage test experience device | |
| CN206114364U (en) | Portable multi -functional water is measured and sampling tool | |
| CN211318422U (en) | Water environment detection equipment | |
| CN214040215U (en) | Medical specimen container | |
| CN221174619U (en) | Medical wastewater detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20210910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |