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CN-224231512-U - Polyurethane modified asphalt self-healing capability testing device

CN224231512UCN 224231512 UCN224231512 UCN 224231512UCN-224231512-U

Abstract

The utility model relates to the technical field of asphalt ductility testing, in particular to a polyurethane modified asphalt self-healing capability testing device which comprises a device main body, a scraping plate and an asphalt clamp, wherein a constant temperature water tank is arranged at the top of the device main body, a bearing plate is welded in the constant temperature water tank, two supporting sliding rods are respectively fixed on two sides of the inside of the constant temperature water tank, two sliding blocks are respectively welded on two sides of the scraping plate and are respectively sleeved on the outer sides of the supporting sliding rods in a sliding manner, the bottom of the scraping plate is attached to the top of the bearing plate, a control rod is welded at the top of the scraping plate, an installation groove is fixed on one side of the top of the device main body, and a threaded rod is installed in the installation groove through a bearing. According to the utility model, asphalt falling above the supporting plate can be scraped through sliding of the scraping plate, so that an operator can conveniently treat the asphalt adhered above the supporting plate, the cleanliness of equipment in the use process is ensured, and the use efficiency is improved.

Inventors

  • DI HAIDONG

Assignees

  • 中交路桥建设有限公司
  • 中交路桥北方工程有限公司
  • 长安大学

Dates

Publication Date
20260512
Application Date
20250523

Claims (7)

  1. 1. The polyurethane modified asphalt self-healing capability testing device comprises a device main body (1), a scraping plate (6) and an asphalt clamp (15), and is characterized in that a constant temperature water tank (2) is arranged at the top of the device main body (1), a supporting plate (3) is welded inside the constant temperature water tank (2), two supporting slide bars (10) are respectively fixed on two sides of the inside of the constant temperature water tank (2), a sliding block (4) is respectively welded on two sides of the scraping plate (6), two sliding blocks (4) are respectively sleeved on the outer side of the supporting slide bars (10) in a sliding mode, the bottom of the scraping plate (6) is attached to the top of the supporting plate (3), a control rod (9) is welded at the top of the scraping plate (6), a mounting groove (11) is formed in one side of the top of the device main body (1), a threaded rod (13) is mounted in the mounting groove (11) through a bearing, a driving assembly (12) is arranged on the outer side of the threaded rod (13) through a thread engagement sleeve, the asphalt clamp (15) is mounted on the top of the supporting plate (3), and a host machine (14) is mounted on one side of the device main body (1).
  2. 2. The polyurethane modified asphalt self-healing capacity testing device according to claim 1, wherein a plurality of limiting piles (16) are welded on one side of the top of the bearing plate (3) at equal intervals, two asphalt clamps (15) are arranged, one limiting hole block (1501) is welded on one side of each asphalt clamp (15), and the limiting hole blocks (1501) and the limiting piles (16) are in limiting installation.
  3. 3. The polyurethane modified asphalt self-healing capacity testing device according to claim 1, wherein a speed reducer (8) is arranged on one side of the mounting groove (11), the output end of the speed reducer (8) extends into the mounting groove (11) and is fixedly connected with one end of the threaded rod (13), a motor (7) is fixedly arranged on one side of the speed reducer (8) through a bolt, and the output end of the motor (7) extends into the speed reducer (8) and is fixedly connected with the output end of the speed reducer (8).
  4. 4. The polyurethane modified asphalt self-healing capacity testing device according to claim 1, wherein a drain pipe (5) is arranged on one side of the device main body (1), and the drain pipe (5) is communicated with the inside of the constant temperature water tank (2).
  5. 5. The device for testing the self-healing capacity of polyurethane modified asphalt according to claim 1, wherein the driving assembly (12) comprises a threaded slide plate (1201), and the threaded slide plate (1201) and the threaded rod (13) are sleeved through threaded engagement.
  6. 6. The device for testing the self-healing capacity of polyurethane modified asphalt according to claim 5, wherein a supporting rod (1206) is welded at one end of the threaded sliding plate (1201), the bottom end of the supporting rod (1206) extends into the constant temperature water tank (2), and a movable plate (1202) is welded at one side of the supporting rod (1206).
  7. 7. The device for testing the self-healing capacity of polyurethane modified asphalt of claim 6, wherein a plurality of screw rods (1203) are connected with the inside of the movable plate (1202) equidistantly through threaded engagement, a limit baffle (1205) is welded at the outer bottom of the movable plate (1202), and a plug rod (1204) is welded at the bottom of the limit baffle (1205).

Description

Polyurethane modified asphalt self-healing capability testing device Technical Field The utility model relates to the technical field of asphalt ductility testing, in particular to a polyurethane modified asphalt self-healing capability testing device. Background The fatigue cracking is easy to generate under the combined action of repeated load of a driving, sunlight, air and water during the service period of the bridge deck pavement layer and the use period of the asphalt pavement, the disease generated by the crack not only affects the driving comfort, but also affects the durability and the service life of a bridge, and the fatigue cracking generated by the asphalt pavement is self-repairing performance of asphalt materials as the crack contracts and even disappears along with the rising of temperature after the pavement is stopped for a period of time. The polyurethane can form an elastic network structure when added into asphalt, so that the self-healing capacity of the asphalt is promoted, the durability and the service life of a road are improved, and in addition, the polyurethane modified asphalt has higher consistency, strength, low-temperature toughness and permanent deformation resistance, so that the polyurethane modified asphalt has a wide application prospect in sustainable development of the road surface. Although polyurethane-modified asphalt has many advantages, since the damage and healing mechanism of asphalt are not clear, it is necessary to test the self-healing ability of polyurethane-modified asphalt. The existing polyurethane modified asphalt testing process has the problems that a self-healing capacity testing device for the modified asphalt is not available, meanwhile, when the asphalt is subjected to tensile testing, the asphalt is likely to break in the tensile process, and the broken asphalt can fall to the bottom of the ductility apparatus. But current device is difficult to effectively clear up the pitch that drops, leads to instrument bottom to receive the pollution, influences the accuracy of subsequent use and test. Therefore, a device for testing the self-healing capacity of polyurethane modified asphalt is specially provided. Disclosure of utility model The utility model aims to provide a polyurethane modified asphalt self-healing capability testing device which aims to solve the problems in the background technology and is provided with the following technical scheme that the polyurethane modified asphalt self-healing capability testing device comprises a device main body, a scraping plate and an asphalt clamp, wherein a constant-temperature water tank is arranged at the top of the device main body, a bearing plate is welded in the constant-temperature water tank, two supporting slide bars are respectively fixed on two sides of the inside of the constant-temperature water tank, two sliding blocks are respectively welded on two sides of the scraping plate, the two sliding blocks are respectively sleeved on the outer sides of the supporting slide bars in a sliding manner, the bottom of the scraping plate is attached to the top of the bearing plate for use, a control rod is welded on the top of the scraping plate, an installation groove is fixed on one side of the top of the device main body, a threaded rod is installed in the installation groove through a bearing, a driving component is sleeved on the outer side of the threaded rod through a threaded engagement, the asphalt clamp is installed on the top of the bearing plate, and a control host is installed on one side of the device main body. Preferably, a plurality of spacing piles are welded on one side of the top of the bearing plate at equal intervals, the number of the asphalt clamps is two, one side of each asphalt clamp is welded with a spacing hole block, and the spacing hole blocks and the spacing piles are arranged in a spacing mode. Preferably, a speed reducer is installed on one side of the installation groove, the output end of the speed reducer extends into the installation groove to be fixedly connected with one end of the threaded rod, a motor is fixedly installed on one side of the speed reducer through a bolt, and the output end of the motor extends into the speed reducer to be fixedly connected with the output end of the speed reducer. Preferably, a drain pipe is installed at one side of the device body, and the drain pipe is communicated with the inside of the constant temperature water tank. Preferably, the driving assembly comprises a threaded sliding plate, and the threaded sliding plate and the threaded rod are sleeved through threaded engagement. Preferably, one end of the threaded sliding plate is welded with a supporting rod, the bottom end of the supporting rod extends into the constant temperature water pool, and one side of the supporting rod is welded with a movable plate. Preferably, a plurality of screw rods are connected in an equidistant manner in the movable plate through threaded enga