CN-121977972-A - Asphalt viscosity detection device and detection method

CN121977972ACN 121977972 ACN121977972 ACN 121977972ACN-121977972-A

Abstract

The invention relates to the technical field of new material detection, in particular to an asphalt viscosity detection device and an asphalt viscosity detection method. An asphalt viscosity detection device comprises a bracket, a detection body, a rotor, a limit cylinder and a heating furnace. The detection body is arranged on the bracket, and the rotor is arranged on the detection body. A plurality of limiting plates are uniformly distributed on the inner peripheral wall surface of the limiting cylinder, limiting channels are defined among the limiting plates, the heating furnace is coaxial with the limiting cylinder and is arranged at the lower end of the limiting cylinder, and a material cylinder is coaxially arranged in the heating furnace. According to the asphalt viscosity detection device, the whole rotor is limited at the center of the limiting channel in the downward movement process of the rotor, so that shaking generated in the downward movement process of the rotor is reduced, the rotor, the limiting cylinder, the heating furnace and the material cylinder are kept coaxial, the negative influence of misalignment of the rotor on a detection result is reduced, the accuracy and reliability of detection of a new asphalt material are improved, and quality assessment and popularization and application of the new asphalt material are facilitated.

Inventors

Xing Yanmin
XIN PENGZE
DUAN CHUNZENG
PENG TAO
WANG LI
LI WANHUI
YUE XIAOFANG
LIU GAOQIANG
YANG LILI
DOU FAMING

Assignees

陕西陕耀未来环保科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260324

Claims (10)

1. The asphalt viscosity detection device is characterized by comprising a support, a detection body, a rotor, a limit cylinder and a heating furnace, wherein the detection body can be installed on the support in a vertically movable mode, the rotor can move up and down along with the detection body in a vertical direction, the rotor comprises a rod portion and a head portion, the rod portion is movably connected to the lower end of the detection body, the head portion is located at the lower end of the rod portion and fixedly connected with the rod portion, the limit cylinder is coaxial with the rotor and is installed at the lower end of the detection body, the detection body can move up and down relative to the limit cylinder, a plurality of limit plates are uniformly distributed on the inner peripheral wall surface of the limit cylinder, the limit plates are elastic plates, limit channels are defined between the limit plates, the limit channels are coaxial with the limit cylinder, the diameter of the head portion of the rotor is larger than that of the limit channels, the diameter of the rotor is smaller than that of the limit channels, the heating furnace is coaxial with the limit cylinder and is installed at the lower end of the limit cylinder, a material cylinder is coaxially arranged in the heating furnace, asphalt to be detected is contained in the material cylinder, the heating furnace can heat the material cylinder, when the head portion of the rotor stretches into the material cylinder, the material cylinder is located in the limit channels of the rotor, and the material cylinder still penetrates through the limit channels, and the limit channels of the material channels are located in the limit channels.
2. The asphalt viscosity detecting device according to claim 1, wherein the plurality of limiting plates are fan-shaped plates, the plurality of limiting plates are arranged on the inner peripheral wall surface of the limiting cylinder at intervals, the limiting cylinder is arranged at the lower end of the detecting body through the connecting cylinder, the connecting cylinder is coaxial with the limiting cylinder and fixedly connected with the detecting body, and the connecting cylinder is in spiral fit with the limiting cylinder.
3. The asphalt viscosity detecting device according to claim 2, wherein a rotating cylinder is arranged between the heating furnace and the material cylinder, the rotating cylinder is arranged coaxially with the heating furnace, and the rotating cylinder can rotate relative to the heating furnace and can rotate along with the limiting cylinder.
4. A device for detecting the viscosity of asphalt according to claim 3, wherein the material cylinder can rotate along with the rotating cylinder.
5. The asphalt viscosity detecting device according to claim 4, wherein the rotating cylinder is matched with the key groove of the limiting cylinder, and the material cylinder is matched with the key groove of the rotating cylinder.
6. The asphalt viscosity detecting device according to claim 3, wherein the connecting cylinder is sleeved with a first elastic piece, the first elastic piece is arranged in the vertical direction, the upper end and the lower end of the first elastic piece are respectively abutted with the detecting body and the limiting cylinder, and the limiting cylinder always has a trend of moving towards the side far away from the detecting body in the vertical direction by the first elastic piece.
7. The asphalt viscosity detecting device according to claim 2, wherein the two ends of the limiting plate along the radial direction of the limiting cylinder are respectively called a first inner end and a first outer end, the first inner end is positioned at one side of the first outer end, which is close to the central axis of the limiting cylinder, in the radial direction of the limiting cylinder, and the first inner end is positioned below the first outer end in an initial state.
8. The asphalt viscosity detecting device according to claim 7, wherein each limiting plate is provided with a deforming plate, the deforming plates have elasticity, two ends of the deforming plates along the radial direction of the limiting cylinder are respectively called a second inner end and a second outer end, the second inner end is positioned on the same side as the first inner end, the second outer end is positioned on the same side as the first outer end, and the second inner end and the second outer end can be mutually far away from or mutually close to each other.
9. The asphalt viscosity detecting device according to claim 8, wherein the limiting cylinder is coaxially and rotatably provided with a gear ring, a plurality of first wedges are arranged at the inner end of the gear ring, the second end of each deformation plate is in sliding fit with the limiting cylinder, the second end of each deformation plate is provided with a second wedge, the first wedges are in one-to-one correspondence with the second wedges, the first wedges are abutted with the second wedges which are correspondingly arranged in the initial state, and when the gear ring drives the first wedges to rotate around the central axis of the limiting cylinder relative to the second wedges, the second wedges can move in the radial direction of the limiting cylinder.
10. An asphalt viscosity detection method using an asphalt viscosity detection apparatus according to any one of claims 1 to 9, characterized by comprising the steps of: S10, placing asphalt to be detected in a material cylinder, and heating the asphalt by using a heating furnace; s20, driving the detector to move downwards relative to the bracket, and driving the rotor to move downwards synchronously by the movement of the detector; s30, enabling the rotor to pass through a limiting channel in the limiting cylinder and then enter the material cylinder, wherein a rod part of the rotor is positioned in the limiting channel; s40, driving the rotor to rotate at a constant speed in asphalt.

Description

Asphalt viscosity detection device and detection method Technical Field The invention relates to the technical field of new material detection, in particular to an asphalt viscosity detection device and an asphalt viscosity detection method. Background Asphalt viscosity is a core index for measuring rheological property of asphalt materials, and directly determines construction difficulty, compaction effect and service life of roads of asphalt mixtures, so that accurate detection of asphalt viscosity is important in road engineering construction and asphalt material quality control. Along with the continuous promotion of road engineering to material performance requirement, pitch new material is emerging constantly, and new material detection technology's precision and reliability demand are increasingly showing, and pitch viscosity is as one of the core items of new material detection, and its check out test set's performance directly influences the popularization and application of new material and engineering quality control effect. At present, a Brookfield viscosity detector is commonly adopted in the industry as core detection equipment of road asphalt viscosity, and the equipment belongs to a rotary viscometer, becomes a main flow instrument for asphalt viscosity detection by virtue of the characteristics of high measurement precision and strong suitability, is widely applied to asphalt new material detection and traditional asphalt quality detection scenes, and provides core data support for asphalt material screening, acceptance and engineering application. When the rotor rotates in asphalt, the viscosity of the asphalt can generate a viscous torque acting on the surface of the rotor, the viscous torque is captured by the sensor and transmitted to the computer, and the viscosity value of the asphalt to be detected can be converted after the system processing. The core components of the device comprise a driving motor, a speed change mechanism, a rotor, a sensor, a heating furnace and the like, and can meet the detection requirements of asphalt materials with different temperatures and different types. However, in the prior art, the rotor is arranged on the mandrel of the detection body through the hairspring, the rotor is easy to shake in the falling process of the hairspring in the heating furnace due to the elastic supporting characteristic of the hairspring, the shake not only can cause the rotor to collide with the inner wall of the heating furnace to cause abrasion of the rotor and damage of the inner wall of the heating furnace, but also can damage the stable environment of asphalt liquid to interfere with stable conduction of viscous torque, the rotor and the heating furnace are of split type, when an operator manually lowers the rotor, the lowering track of the rotor is difficult to accurately control, the rotor cannot be accurately centered with the heating furnace after being lowered, and the distance from the rotor to the inner wall of the heating furnace is obviously deviated. The distance deviation can cause uneven asphalt viscosity resistance on different sides of the rotor, and finally causes larger error between the calculated asphalt viscosity value and the actual value, thereby affecting the accuracy and reliability of the detection of the new asphalt material and being unfavorable for the quality evaluation and popularization and application of the new asphalt material. Disclosure of Invention The invention provides an asphalt viscosity detection device and an asphalt viscosity detection method, which are used for solving the problems that the accuracy and reliability of detection of an asphalt new material are affected and quality assessment and popularization and application of the asphalt new material are not facilitated due to detection errors caused by rotor shaking and misalignment of the existing asphalt viscosity detection device. The asphalt viscosity detection device comprises a support, a detection body, a rotor, a limiting cylinder and a heating furnace, wherein the detection body can be installed on the support in a vertically movable mode, the rotor can move up and down along with the detection body in a vertical direction, the rotor comprises a rod portion and a head portion, the rod portion is movably connected to the lower end of the detection body, the head portion is located at the lower end of the rod portion and fixedly connected with the rod portion, the limiting cylinder is coaxial with the rotor and is installed at the lower end of the detection body, the detection body can move up and down relative to the limiting cylinder, a plurality of limiting plates are uniformly distributed on the inner peripheral wall surface of the limiting cylinder, the limiting plates are elastic plates, limiting channels are defined between the limiting plates, the limiting channels are coaxial with the limiting cylinder, the diameter of the head portion of the rotor is larger t