CN219369435U - Hydraulic asphalt concrete trabecula bending creep test equipment - Google Patents
Hydraulic asphalt concrete trabecula bending creep test equipment Download PDFInfo
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- CN219369435U CN219369435U CN202223115286.7U CN202223115286U CN219369435U CN 219369435 U CN219369435 U CN 219369435U CN 202223115286 U CN202223115286 U CN 202223115286U CN 219369435 U CN219369435 U CN 219369435U
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- asphalt concrete
- creep test
- bending creep
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Abstract
The utility model discloses hydraulic asphalt concrete trabecula bending creep test equipment, which comprises a base, wherein the top surface of the base is provided with two supporting seats and two vertically arranged guide posts, the two supporting seats are positioned between the two guide posts in the horizontal direction, lifting tables are arranged on the two guide posts in a sliding manner, a pressure head is arranged in the middle of the bottom surface of the lifting tables, the plane of the pressure head is positioned between the two supporting seats, the top of the supporting seats and the bottom of the pressure head are respectively and rotatably connected with a roller, the central shafts of the three rollers are arranged in parallel, the middle of the front side surface and the rear side surface of the lifting tables is provided with a connecting part, the connecting part is provided with a positioning rod, the bottom end of the positioning rod is provided with a limiting end, an opening weight is detachably arranged on the positioning rod, a displacement sensor positioned right below the pressure head is also arranged on the top surface of the base, and the displacement sensor is electrically connected with a data processor; the utility model has the advantages of stable load, automatic detection and convenient operation.
Description
Technical Field
The utility model belongs to the technical field of concrete bending test equipment, and particularly relates to hydraulic asphalt concrete trabecula bending creep test equipment.
Background
The asphalt concrete bending creep test is used for measuring the strain rate of the bending creep of an asphalt mixture test piece under the condition of a specified temperature and loading stress, and is used for evaluating the deformation performance of the asphalt mixture, in the asphalt concrete bending creep test process, constant load is required to be applied to the test piece, the load is usually 1KN-5KN, and the deformation amount of the test piece is monitored. At present, domestic research on asphalt concrete bending creep test devices is still in a earlier stage, and in the asphalt and asphalt mixture test procedure, it is specified that the creep test machine is preferably an electrohydraulic servo universal test machine capable of applying constant load, and also can be a weight loaded creep test machine. Hydraulic asphalt concrete generally refers to asphalt concrete used in hydraulic engineering.
Chinese utility model (CN 202220552272.2) discloses a three-point bending detection jig, which relates to the bending jig field. This three-point bending detects anchor clamps includes: the hydraulic device comprises a first hydraulic cylinder, wherein a fixing base is fixedly connected to an extension shaft of the first hydraulic cylinder, a sliding rail is fixedly connected to the upper surface of the fixing base, a moving assembly is assembled on the sliding rail, the moving assembly is connected with two moving seats, a rolling groove is formed in the top of each moving seat, and a rolling shaft is connected to the inner wall of each rolling groove in a rolling mode; the top of the second hydraulic cylinder is connected with an external fixing mechanism, and an extrusion rod is fixedly connected with an extrusion shaft of the second hydraulic cylinder. Because the pneumatic cylinder is when providing deformation pressure to the test piece, the pressure is difficult to stabilize, influences experimental effect easily.
In the prior art, a fixed-load bending creep testing machine for molding is lacking in China, bending pressure is difficult to stabilize by adopting hydraulic equipment, deformation is generally tested by a ruler tool, and the deformation of a test piece is inconvenient to monitor in real time.
Disclosure of Invention
The utility model aims at solving the problems existing in the prior art and provides hydraulic asphalt concrete trabecula bending creep test equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a hydraulic engineering asphalt concrete trabecula bending creep test equipment, includes the base, the top surface of base is provided with two supporting seats and two guide posts of vertical setting, and two supporting seats are located between two guide posts on the horizontal direction, and two guide posts are last to slide and are provided with the elevating platform, and the bottom surface middle part of elevating platform is provided with the pressure head, and the plane that the pressure head is located in the middle of two supporting seats, the top of supporting seat the bottom of pressure head all rotates and is connected with the gyro wheel, the center pin parallel arrangement of three gyro wheel, the centre of the front and back side of elevating platform is provided with connecting portion, be provided with the locating lever on the connecting portion, the bottom of locating lever is provided with the limit terminal, detachable is provided with the opening on the locating lever, still be provided with the displacement sensor who is located the pressure head weight under on the top surface of base, the displacement sensor electricity is connected with data processor.
In the scheme, equipment is stable and support the part through the base, guide the elevating platform through the guide post, make the elevating platform slide from top to bottom along the guide post, the test piece adopts plate column structure, the top of two supporting seats sets up the gyro wheel and supports the test piece, the bottom surface of elevating platform sets up the pressure head, the gyro wheel of pressure head bottom applys invariable load to the test piece, pass through three parallel gyro wheels and test piece roll connection, make the test piece can freely warp at equipment after the atress, reduce frictional force, in the horizontal direction, the plane that the pressure head is located in the middle, the supporting seat, the guide post is by interior to outer setting in the planar both sides that the pressure head is located, make the pressure head apply a force to the middle part of test piece, guarantee test effect, because the required load volume of test reaches 1KN-5KN, the load range of applys is great, adopt all set up connecting portion and locating lever at the front and back side of elevating platform, the opening on the weight is connected with the locating lever cooperation, the open weight quantity of load adjustment installation, spacing end carries out spacing, keep the balance of elevating platform front and back side simultaneously, set up displacement sensor in the base, when the pressure head is used for measuring the test piece, the instrument is convenient for recording the deformation, the data is processed to the test piece, the instrument is processed to the measurement of the data.
Further, locating plates are arranged on two sides of the top of the supporting seat and two sides of the bottom of the pressure head, a rotating shaft is arranged in the middle of the roller, and two ends of the rotating shaft are connected with the locating plates.
The rollers are installed through the positioning plates on the two sides of the top of the supporting seat and the two sides of the bottom of the pressure head in cooperation with the rotating shafts, and the connecting holes are formed in the positioning plates for the rotating shafts to penetrate through for connection and positioning.
Further, a guide hole which is in sliding fit with the guide post is formed in the lifting table.
And installing a guide column through the guide hole, and installing and positioning the lifting platform.
Further, the connecting portion comprises two mounting plates which are arranged in parallel, and the top end of the positioning rod is rotationally connected between the two mounting plates.
The weight load is transmitted to the lifting table and the pressure head through the mounting plate, and the top ends of the positioning rods are rotationally connected so that the load force is kept vertically downwards.
Further, the base is detachably provided with a fixing plate, and the displacement sensor is connected to the fixing plate through a fastener.
The displacement sensor is positioned through the fixing plate and the fastening piece, so that the displacement sensor is stably tested.
Further, a limiting part is arranged at the bottom of the guide post.
The stroke of the lifting platform is limited by the limiting part.
Further, the displacement sensor is a contact sensor, and comprises a telescopic probe.
The probe of the displacement sensor is attached to the bottom surface of the test piece, and during testing, the probe is less affected by environment relative to the non-contact sensor, and the test is stable.
Compared with the prior art, the utility model has the beneficial effects that:
1. the weight is adjusted to provide the required fixed load for the test piece, so that the pressure is stable, the operation is simple, the investment of additional hydraulic equipment is not needed, and the cost is low;
2. the displacement sensor is arranged on the base and corresponds to the position of the pressure head, so that the deformation of the stressed deformation part of the test piece is automatically monitored, the test is accurate, the reliability of the test result is improved, and the test workload of staff is reduced;
3. through set up gyro wheel and test piece cooperation on supporting seat and pressure head, the frictional force influence that receives when reducing the test piece deformation avoids the test piece atress position to receive the shearing force effect to cause deformation, influences test result.
Drawings
Fig. 1 is a structural perspective view of embodiment 1 of the present utility model;
FIG. 2 is a front view of embodiment 1 of the present utility model;
FIG. 3 is a right side view of embodiment 1 of the present utility model;
FIG. 4 is a front view of embodiment 2 of the present utility model;
FIG. 5 is a rear view of embodiment 2 of the present utility model;
FIG. 6 is a front view of the positioning plate in embodiment 3 of the present utility model;
FIG. 7 is a right side view of the positioning plate in embodiment 3 of the present utility model;
in the figure: 1. a base; 2. a support base; 3. a guide post; 31. a limit part; 4. a lifting table; 5. a pressure head; 6. a roller; 8. a positioning rod; 9. a limiting end; 10. an opening weight; 11. a displacement sensor; 111. a probe; 12. a positioning plate; 13. a rotating shaft; 14. a mounting plate; 15. a fixing plate; 16. a fastener.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model. In the description of the present utility model, it should be noted that, the terms front, rear, left, right, and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, are merely for convenience of describing the present utility model or simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured or operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
Example 1
As shown in fig. 1-3, a hydraulic asphalt concrete trabecula bending creep test device comprises a base 1, the top surface of base 1 is provided with two supporting seats 2 and two guide posts 3 that vertically set up, two supporting seats 2 are located between two guide posts 3 in the horizontal direction, slide on two guide posts 3 and be provided with elevating platform 4, elevating platform 4's bottom surface middle part is provided with pressure head 5, pressure head 5 place plane is located in the middle of two supporting seats 2, the top of supporting seat 2 the bottom of pressure head 5 all rotates and is connected with gyro wheel 6, the center pin parallel arrangement of three gyro wheel 6, the centre of elevating platform 4 front and back side is provided with connecting portion, be provided with locating lever 8 on the connecting portion, the bottom of locating lever 8 is provided with spacing end 9, be provided with opening weight 10 on the locating lever 8 detachable, still be provided with the displacement sensor 11 that is located pressure head 5 under on the top surface of base 1, displacement sensor 11 electricity is connected with data processor.
In the above-mentioned scheme, guarantee steady and support the part through base 1, pass through guide post 3 to elevating platform 4, make elevating platform 4 slide from top to bottom along guide post 3, the test piece adopts plate column structure, the top of two supporting seats 2 sets up gyro wheel 6 and supports the test piece, the bottom surface of elevating platform 4 sets up pressure head 5, the gyro wheel 6 of pressure head 5 bottom applys invariable load to the test piece, pass through three parallel gyro wheel 6 and test piece roll connection, make the test piece can freely warp relative equipment after the atress, reduce frictional force, in horizontal direction, the plane that pressure head 5 is located the centre, supporting seat 2, the setting outside from inside to outside is in the both sides of the plane that pressure head 5 is located, make pressure head 5 apply a force to the middle part of test piece, guarantee the test effect, because the required load volume of test reaches 1KN-5KN, the load range who applys is great, adopt all to set up connecting portion and locating lever 8 at the front and back side of elevating platform 4, opening on the opening weight 10 is connected with locating lever 8 cooperation, the quantity 10 that the load adjustment installed is needed, make the test piece quantity of opening 9 that can be out of load adjustment, the counter weight that carries out the limit position sensor is carried out on the pressure head 4, the load-stop device is kept at the side, the time, the load-and the load is convenient is passed through the load-sensing device is realized, the volume of the load-sensing device is kept to the load-sensing device is convenient to be arranged on the side, the test piece is measured at the side, the side is convenient to be processed, the pressure transducer is under the load-sensitive device is 11, the load is measured is under the load is measured and is measured to the quality is measured.
The test piece adopts cuboid asphalt concrete trabecula, and two supporting seats 2, two guide posts 3 are respectively along pressure head 5 place plane symmetry setting. The limiting end 9 is of a round cake-shaped structure and can also be of a plate-shaped structure. The roller 6 is cylindrical. The data processor is a computer. The bottom of the displacement sensor 11 is fixed to the base 1 by bolts.
Further, positioning plates 12 are arranged on two sides of the top of the supporting seat 2 and two sides of the bottom of the pressure head 5, a rotating shaft 13 is arranged in the middle of the roller 6, and two ends of the rotating shaft 13 are connected with the positioning plates 12.
The roller 6 is installed by matching the positioning plates 12 on the two sides of the top of the supporting seat 2 and the two sides of the bottom of the pressure head 5 with the rotating shafts 13, and the positioning plates 12 are provided with connecting holes for the rotating shafts 13 to pass through for connection and positioning. The end of the rotary shaft 13 may be connected by a nut or cotter pin. The locating plate 12 is integrally arranged at the top of the supporting seat 2 or at the bottom of the pressure head 5.
Further, a guide hole which is in sliding fit with the guide post 3 is formed in the lifting table 4.
The guide post 3 is installed through the guide hole, and the lifting table 4 is installed and positioned.
Further, the connecting portion comprises two mounting plates 14 arranged in parallel, and the top end of the positioning rod 8 is rotatably connected between the two mounting plates 14.
The weight load is transmitted to the lifting platform 4 and the pressure head 5 through the mounting plate 14, and the top end of the positioning rod 8 is rotatably connected so that the load force is kept vertically downwards.
The top end of the positioning rod 8 is provided with a first round hole, two mounting plates 14 are provided with a second round hole, a shaft pin is arranged between the two mounting plates 14, and the shaft pin penetrates through the first round hole and the second round hole to be mounted. The ends of the pin may be connected by nuts or cotter pins.
Further, a limiting part 31 is arranged at the bottom of the guide post 3.
The stroke of the lift table 4 is limited by the limiting portion 31.
The limiting part 31 may be a shoulder structure or a limiting protrusion arranged in the radial direction of the guide post 3. Preventing the ram from exceeding the stroke to affect the sensor.
Further, the displacement sensor 11 is a contact sensor, and the displacement sensor 11 includes a telescopic probe 111.
The probe 111 of the displacement sensor 11 is attached to the bottom surface of the test piece, and is less affected by the environment than a non-contact sensor during testing, and the test is stable.
Example 2
As shown in fig. 4-5, the hydraulic asphalt concrete trabecular bending creep test apparatus of this embodiment is further optimized on the basis of embodiment 1:
further, a fixing plate 15 is detachably arranged on the base 1, and the displacement sensor 11 is connected to the fixing plate 15 through a fastener 16.
The displacement sensor 11 is positioned by the fixing plate 15 and the fastening piece 16, so that the displacement sensor 11 is stably tested. The fastener 16 is a bolt.
Example 3
As shown in fig. 6-7, the hydraulic asphalt concrete trabecular bending creep test apparatus of this embodiment is further optimized on the basis of embodiment 1:
further, the two sides of the top of the supporting seat 2 and the two sides of the bottom of the pressure head 5 are detachably provided with positioning plates 12, the middle of the roller 6 is provided with a rotating shaft 13, and two ends of the rotating shaft 13 are connected with the positioning plates 12.
The locating plate 12 is connected to the top of the supporting seat 2 or the bottom of the pressure head 5 through bolts, and is convenient for installing the roller 6.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a hydraulic engineering asphalt concrete trabecula bending creep test equipment, its characterized in that, the on-line screen storage device comprises a base, the top surface of base is provided with two supporting seats and two guide posts of vertical setting, and two supporting seats are located between two guide posts on the horizontal direction, and two guide posts slide and are provided with the elevating platform, and the bottom surface middle part of elevating platform is provided with the pressure head, and the plane that the pressure head is located in the middle of two supporting seats, the top of supporting seat the bottom of pressure head all rotates and is connected with the gyro wheel, the center pin parallel arrangement of three gyro wheel, the centre of elevating platform is provided with connecting portion, be provided with the locating lever on the connecting portion, the bottom of locating lever is provided with the spacing end, detachable is provided with the opening weight on the locating lever, still be provided with the displacement sensor who is located under the pressure head on the top surface of base, the displacement sensor electricity is connected with data processor.
2. The hydraulic asphalt concrete trabecula bending creep test device according to claim 1, wherein positioning plates are arranged on two sides of the top of the supporting seat and two sides of the bottom of the pressure head, a rotating shaft is arranged in the middle of the roller, and two ends of the rotating shaft are connected with the positioning plates.
3. The hydraulic asphalt concrete trabecula bending creep test apparatus according to claim 1, wherein the lifting platform is provided with a guide hole in sliding fit with the guide post.
4. The hydraulic asphalt concrete trabecula bending creep test apparatus according to claim 1, wherein the connecting portion comprises two mounting plates arranged in parallel, and the top end of the positioning rod is rotatably connected between the two mounting plates.
5. The hydraulic asphalt concrete trabecula bending creep test apparatus according to claim 1, wherein the base is detachably provided with a fixing plate, and the displacement sensor is connected to the fixing plate by a fastener.
6. The hydraulic asphalt concrete trabecula bending creep test apparatus according to claim 1, wherein the bottom of the guide post is provided with a limit portion.
7. The hydraulic asphalt concrete trabecula bending creep test apparatus of claim 1, wherein the displacement sensor is a contact sensor comprising a telescoping probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223115286.7U CN219369435U (en) | 2022-11-23 | 2022-11-23 | Hydraulic asphalt concrete trabecula bending creep test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223115286.7U CN219369435U (en) | 2022-11-23 | 2022-11-23 | Hydraulic asphalt concrete trabecula bending creep test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN219369435U true CN219369435U (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223115286.7U Active CN219369435U (en) | 2022-11-23 | 2022-11-23 | Hydraulic asphalt concrete trabecula bending creep test equipment |
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| CN (1) | CN219369435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117451535A (en) * | 2023-12-21 | 2024-01-26 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
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2022
- 2022-11-23 CN CN202223115286.7U patent/CN219369435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117451535A (en) * | 2023-12-21 | 2024-01-26 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
| CN117451535B (en) * | 2023-12-21 | 2024-03-08 | 深圳市旭仓科技有限公司 | Concrete quality detection device for hydraulic engineering |
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