CN204389299U - A kind of Marshall tester - Google Patents
A kind of Marshall tester Download PDFInfo
- Publication number
- CN204389299U CN204389299U CN201520076516.4U CN201520076516U CN204389299U CN 204389299 U CN204389299 U CN 204389299U CN 201520076516 U CN201520076516 U CN 201520076516U CN 204389299 U CN204389299 U CN 204389299U
- Authority
- CN
- China
- Prior art keywords
- seaming chuck
- push
- down head
- load sensor
- rotating nut
- 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
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a kind of Marshall tester, comprise pedestal and be arranged on two columns on pedestal, two columns are connected by crossbeam, pedestal arranges screw rod, push-down head is installed in the upper end of screw rod, above push-down head, seaming chuck is set, rotating nut and the actuating unit for driving rotating nut to rotate are set in pedestal, screw rod lower end is stretched into rotating nut and is coordinated with rotating nut screw-driven, the both sides of screw rod are provided with the guide pillar for guiding seaming chuck and push-down head lifting, crossbeam arranges load sensor, load sensor connects impact damper, seaming chuck is provided with for extruding impact damper with the pressure-bearing platform of exerting pressure to load sensor, seaming chuck is arranged the displacement transducer being used for test seaming chuck and push-down head relative shift when marshal piece is broken.This Marshall tester seaming chuck and push-down head operate steadily, and improve measuring accuracy, and by arranging impact damper, and available protecting load sensor, prevents load sensor from transshipping and damage.
Description
Technical field
The utility model belongs to Marshall Test technical field, is specifically related to a kind of Marshall tester.
Background technology
In the construction of highroad, particularly highway, all be unable to do without asphalt.A lot of road surface all mainly uses asphalt just to spread, and the quality of asphalt directly has influence on quality and the serviceable life of highway.And out through many-sided detection, many-sided index to be measured to guarantee to conform to quality requirements at bituminous mixture later.And measure these data and will use various equipment.The flow valuve of asphalt and degree of stability are important indicators, measure flow valuve and degree of stability to need to use Marshall tester, and the motion of the seaming chuck of present Marshall tester and push-down head not steadily and the pressure transducer measuring pressure is subject to too high pressure time easily damage.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of Marshall tester.The structure of this Marshall tester is simple, and its seaming chuck and push-down head operate steadily, and improve measuring accuracy, and by arranging impact damper, and available protecting load sensor, prevents load sensor from transshipping and damage.
For achieving the above object, the technical solution adopted in the utility model is: a kind of Marshall tester, it is characterized in that: comprise pedestal and be arranged on two columns on described pedestal, two described columns are connected by crossbeam, described pedestal is provided with screw rod between two columns, the upper end of described screw rod is provided with push-down head, the top of described push-down head is provided with seaming chuck, rotating nut and the actuating unit for driving described rotating nut to rotate is provided with in described pedestal, the lower end of described screw rod is stretched into described rotating nut and is coordinated with rotating nut screw-driven, the both sides of described screw rod are provided with for being slidably matched with seaming chuck and push-down head the guide pillar that guides seaming chuck and push-down head to be elevated, described seaming chuck has for the upper arc sections suitable with cylindrical marshal piece, described push-down head has for the lower arc sections suitable with cylindrical marshal piece, described crossbeam is provided with load sensor, described load sensor is connected with impact damper, described seaming chuck is provided with for extruding described impact damper with the pressure-bearing platform of exerting pressure to load sensor, described seaming chuck is provided with the displacement transducer for test seaming chuck and push-down head relative shift when marshal piece is broken.
Above-mentioned a kind of Marshall tester, is characterized in that: described load sensor is that level is laid, and one end of described load sensor is connected with crossbeam by suspension rod, and the other end of described load sensor is provided with the collar; Described impact damper comprises guide rod and buffer spring, the lower end of described guide rod arranges and is used for the bulge loop corresponding with pressure-bearing platform, the upper end of described guide rod is through the described collar, described buffer spring is arranged on the outside of described guide rod, the upper end of described buffer spring is connected on the collar, and the lower end of described buffer spring is connected on bulge loop.
Above-mentioned a kind of Marshall tester, it is characterized in that: institute's displacement sensors is resistor type displacement sensor, institute's displacement sensors comprises housing and is positioned at described housing and the measuring staff laid along shell length direction, the two ends of described measuring staff all pass housing, the resistance laid along shell length direction is provided with in described housing, described measuring staff is provided with the slide plate for contacting with described resistance, described housing is fixedly connected with seaming chuck, and the lower end of described measuring staff contacts with push-down head.
Above-mentioned a kind of Marshall tester, is characterized in that: be provided with tension spring in described housing, and described measuring staff is provided with bootstrap block, and the upper end of described tension spring is connected with bootstrap block, and the lower end of described tension spring is connected with housing.
Above-mentioned a kind of Marshall tester, it is characterized in that: described actuating unit comprises motor, the output shaft of described motor is provided with gear, described rotating nut is provided with the tooth for being meshed with described gear, described rotating nut is connected with and stretches into and the sleeve pipe rotated with rotating nut for screw rod.
The utility model compared with prior art has the following advantages:
1, structure of the present utility model is simple, rationally novel in design.
2, the utility model is by arranging two guide pillars, can guide moving up and down of seaming chuck and push-down head, can prevent seaming chuck and push-down head double swerve, seaming chuck and push-down head are operated steadily, and improves measuring accuracy.And by arranging impact damper, available protecting load sensor, prevents load sensor from transshipping and damages.
3, the utility model is by arranging impact damper, avoids pressure-bearing platform directly to contact with load sensor, effectively protects load sensor, effectively prevents load sensor from transshipping and damages.
4, of the present utility model to realize cost low, and result of use is good, is convenient to promote the use of.
In sum, the utility model structure is simple, and rationally novel in design, functional reliability is high, long service life, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model displacement transducer.
Fig. 3 is the annexation schematic diagram of the utility model actuating unit and rotating nut.
Description of reference numerals:
1-pedestal; 2-screw rod; 3-push-down head;
3-1-lower arc sections; 4-guide pillar; 5-displacement transducer;
5-1-housing; 5-2-measuring staff; 5-3-resistance;
5-4-slide plate; 5-5-bootstrap block; 5-6-tension spring;
6-column; 7-seaming chuck; 7-1-upper arc sections;
8-pressure-bearing platform; 9-impact damper; 9-1-guide rod;
9-2-buffer spring; 9-3-bulge loop; 10-load sensor;
10-1-collar; 11-suspension rod; 12-crossbeam;
13-motor; 14-gear; 15-rotating nut;
16-sleeve pipe; 17-bearing.
Embodiment
As Fig. 1, a kind of Marshall tester shown in Fig. 2 and Fig. 3, two columns 6 comprising pedestal 1 and be arranged on described pedestal 1, two described columns 6 are connected by crossbeam 12, described pedestal 1 is provided with screw rod 2 between two columns 6, the upper end of described screw rod 2 is provided with push-down head 3, the top of described push-down head 3 is provided with seaming chuck 7, rotating nut 15 and the actuating unit for driving described rotating nut 15 to rotate is provided with in described pedestal 1, the lower end of described screw rod 2 is stretched into described rotating nut 15 and is coordinated with rotating nut 15 screw-driven, the both sides of described screw rod 2 are provided with for being slidably matched with seaming chuck 7 and push-down head 3 guide pillar 4 that guides seaming chuck 7 and push-down head 3 to be elevated, described seaming chuck 7 has for the upper arc sections 7-1 suitable with cylindrical marshal piece, described push-down head 3 has for the lower arc sections 3-1 suitable with cylindrical marshal piece, described crossbeam 12 is provided with load sensor 10, described load sensor 10 is connected with impact damper 9, described seaming chuck 7 is provided with for extruding described impact damper 9 with the pressure-bearing platform 8 of exerting pressure to load sensor 10, described seaming chuck 7 is provided with the displacement transducer 5 for test seaming chuck 7 and push-down head 3 relative shift when marshal piece is broken.
In the present embodiment, this Marshall tester in use, cylindrical marshal piece is placed between seaming chuck 7 and push-down head 3, cylindrical marshal piece is clamped by arc sections 7-1 and lower arc sections 3-1, then turn on the power mechanism, actuating unit drives rotating nut 15 to rotate, by rotating nut 15, being coordinated with the screw-driven of screw rod 2 by rotating nut 15 makes screw rod 2 move up, seaming chuck 7 is driven to move up along two guide pillars 4 by screw rod 2, and then seaming chuck 7 is moved up together with push-down head 3 and cylindrical marshal piece, when pressure-bearing platform 8 contacts with impact damper 9, the pressure suffered by cylindrical marshal piece is tested by load sensor 10, move along with on screw rod 2, constantly cylindrical marshal piece is exerted pressure, when there is breakage under the effect of the pressure in cylindrical marshal piece, the relative shift between seaming chuck 7 and push-down head 3 is detected by displacement transducer 5, the flow valuve of asphalt is drawn again by the described relative shift between seaming chuck 7 and push-down head 3.Load sensor 10 records the force value suffered by seaming chuck 7 and the force value suffered by asphalt, through the degree of stability drawing pitch that converts.
In the present embodiment, because screw rod 2 transmission exists vibrations, it is not steady that screw rod 2 vibrations can make push-down head 3 run, affect measuring accuracy and effectively reduce measuring error, by arranging two guide pillars 4, moving up and down of seaming chuck 7 and push-down head 3 can be guided, seaming chuck 7 and push-down head 3 double swerve can be prevented, seaming chuck 7 and push-down head 3 are operated steadily, improves measuring accuracy.And by arranging impact damper 9, available protecting load sensor 10, prevents load sensor 10 from transshipping and damages.
As shown in Figure 1, described load sensor 10 is laid in level, and one end of described load sensor 10 is connected with crossbeam 12 by suspension rod 11, and the other end of described load sensor 10 is provided with collar 10-1; Described impact damper 9 comprises guide rod 9-1 and buffer spring 9-2, the lower end of described guide rod 9-1 arranges and is used for the bulge loop 9-3 corresponding with pressure-bearing platform 8, the upper end of described guide rod 9-1 is through described collar 10-1, described buffer spring 9-2 is arranged on the outside of described guide rod 9-1, the upper end of described buffer spring 9-2 is connected on collar 10-1, and the lower end of described buffer spring 9-2 is connected on bulge loop 9-3.
In the present embodiment; described impact damper 9 in use; pressure-bearing platform 8 contacts bulge loop 9-3 and then upwards pushes guide rod 9-1; buffer spring 9-2 is compressed; thus avoid pressure-bearing platform 8 directly to contact with load sensor 10; effectively protect load sensor 10, effectively prevent load sensor 10 from transshipping and damage.
Composition graphs 1 and Fig. 2, institute's displacement sensors 5 is resistor type displacement sensor, institute's displacement sensors 5 comprises housing 5-1 and is positioned at described housing 5-1 and the measuring staff 5-2 laid along housing 5-1 length direction, the two ends of described measuring staff 5-2 all pass housing 5-1, the resistance 5-3 laid along housing 5-1 length direction is provided with in described housing 5-1, described measuring staff 5-2 is provided with the slide plate 5-4 for contacting with described resistance 5-3, described housing 5-1 is fixedly connected with seaming chuck 7, and the lower end of described measuring staff 5-2 contacts with push-down head 3.
In the present embodiment, institute's displacement sensors 5 is by the fixed position of resistance 5-3 fixation at housing 5-1, and housing 5-1 is passed and is fixed on seaming chuck 7, measuring staff 5-2 lower end contacts with push-down head 3, moved by the mobile measuring staff 5-2 that drives of push-down head 3, thus measure different resistances by the displacement of slide plate 5-4.The two ends of resistance 5-3 and slide plate 5-4 connect steady-state DC voltage, the principle of similar slide rheostat.
As shown in Figure 2, be provided with tension spring 5-6 in described housing 5-1, described measuring staff 5-2 is provided with bootstrap block 5-5, the upper end of described tension spring 5-6 is connected with bootstrap block 5-5, and the lower end of described tension spring 5-6 is connected with housing 5-1.By arranging tension spring 5-6 and bootstrap block 5-5, by the pulling force effect of tension spring 5-6 to bootstrap block 5-5, measuring staff 5-2 is avoided only to move and do not rotate.
As shown in Figure 3, described actuating unit comprises motor 13, the output shaft of described motor 13 being provided with gear 14, described rotating nut 15 being provided with the tooth for being meshed with described gear 14, described rotating nut 15 is connected with and stretches into and the sleeve pipe 16 rotated with rotating nut 15 for screw rod 2.
In the present embodiment, in use, motor 13 driven gear 14 rotates described actuating unit, and described gear 14 drives rotating nut 15, rotating nut 15 and sleeve pipe 16 unitary rotation by tooth engagement, thus under screw-driven coordinates, screw rod 2 moves up and down.Described sleeve pipe 16 is provided with bearing 17.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a Marshall tester, it is characterized in that: comprise pedestal (1) and be arranged on two columns (6) on described pedestal (1), two described columns (6) are connected by crossbeam (12), described pedestal (1) is gone up and is positioned between two columns (6) and is provided with screw rod (2), the upper end of described screw rod (2) is provided with push-down head (3), the top of described push-down head (3) is provided with seaming chuck (7), rotating nut (15) and the actuating unit for driving described rotating nut (15) to rotate is provided with in described pedestal (1), the lower end of described screw rod (2) is stretched into described rotating nut (15) and is coordinated with rotating nut (15) screw-driven, the both sides of described screw rod (2) are provided with for being slidably matched with seaming chuck (7) and push-down head (3) guide pillar (4) that guides seaming chuck (7) and push-down head (3) to be elevated, described seaming chuck (7) has for the upper arc sections (7-1) suitable with cylindrical marshal piece, described push-down head (3) has for the lower arc sections (3-1) suitable with cylindrical marshal piece, described crossbeam (12) is provided with load sensor (10), described load sensor (10) is connected with impact damper (9), described seaming chuck (7) is provided with for extruding described impact damper (9) with the pressure-bearing platform (8) of exerting pressure to load sensor (10), described seaming chuck (7) is provided with the displacement transducer (5) for test seaming chuck (7) and push-down head (3) relative shift when marshal piece is broken.
2. a kind of Marshall tester according to claim 1, it is characterized in that: described load sensor (10) is laid in level, one end of described load sensor (10) is connected with crossbeam (12) by suspension rod (11), and the other end of described load sensor (10) is provided with the collar (10-1); Described impact damper (9) comprises guide rod (9-1) and buffer spring (9-2), the lower end of described guide rod (9-1) arranges and is used for the bulge loop (9-3) corresponding with pressure-bearing platform (8), the upper end of described guide rod (9-1) is through the described collar (10-1), described buffer spring (9-2) is arranged on the outside of described guide rod (9-1), the upper end of described buffer spring (9-2) is connected on the collar (10-1), and the lower end of described buffer spring (9-2) is connected on bulge loop (9-3).
3. a kind of Marshall tester according to claim 1, it is characterized in that: institute's displacement sensors (5) is resistor type displacement sensor, institute's displacement sensors (5) comprises housing (5-1) and is positioned at described housing (5-1) and the measuring staff (5-2) laid along housing (5-1) length direction, the two ends of described measuring staff (5-2) all pass housing (5-1), the resistance (5-3) laid along housing (5-1) length direction is provided with in described housing (5-1), described measuring staff (5-2) is provided with the slide plate (5-4) for contacting with described resistance (5-3), described housing (5-1) is fixedly connected with seaming chuck (7), the lower end of described measuring staff (5-2) contacts with push-down head (3).
4. a kind of Marshall tester according to claim 3, it is characterized in that: in described housing (5-1), be provided with tension spring (5-6), described measuring staff (5-2) is provided with bootstrap block (5-5), the upper end of described tension spring (5-6) is connected with bootstrap block (5-5), and the lower end of described tension spring (5-6) is connected with housing (5-1).
5. a kind of Marshall tester according to claim 1, it is characterized in that: described actuating unit comprises motor (13), the output shaft of described motor (13) is provided with gear (14), described rotating nut (15) is provided with the tooth for being meshed with described gear (14), described rotating nut (15) is connected with and stretches into and the sleeve pipe (16) rotated with rotating nut (15) for screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076516.4U CN204389299U (en) | 2015-02-03 | 2015-02-03 | A kind of Marshall tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076516.4U CN204389299U (en) | 2015-02-03 | 2015-02-03 | A kind of Marshall tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389299U true CN204389299U (en) | 2015-06-10 |
Family
ID=53362007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520076516.4U Expired - Fee Related CN204389299U (en) | 2015-02-03 | 2015-02-03 | A kind of Marshall tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204389299U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950106A (en) * | 2017-03-21 | 2017-07-14 | 山西省交通科学研究院 | A kind of Marshall stability analyzer of seaming chuck automatic lifting |
| CN110411835A (en) * | 2019-08-26 | 2019-11-05 | 广东嘉仪仪器集团有限公司 | A kind of plastic bottle press strength tester with novel sensor protective device |
-
2015
- 2015-02-03 CN CN201520076516.4U patent/CN204389299U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950106A (en) * | 2017-03-21 | 2017-07-14 | 山西省交通科学研究院 | A kind of Marshall stability analyzer of seaming chuck automatic lifting |
| CN110411835A (en) * | 2019-08-26 | 2019-11-05 | 广东嘉仪仪器集团有限公司 | A kind of plastic bottle press strength tester with novel sensor protective device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20160203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |