CN213364385U

CN213364385U - Novel adjustable asphalt scraping mold bottom plate device

Info

Publication number: CN213364385U
Application number: CN202021422302.5U
Authority: CN
Inventors: 张少锦; 江冠文; 王勇; 王端宜; 赵超; 胡美娟; 姚健勇; 陈富达; 夏子金; 聂文
Original assignee: Guangzhou Xiaoning Institute Of Roadway Engineering Co ltd; HUANGPU BRIDGE OF PEARL RIVER IN GUANGZHOU; South China University of Technology SCUT
Current assignee: Guangzhou Xiaoning Institute Of Roadway Engineering Co ltd; HUANGPU BRIDGE OF PEARL RIVER IN GUANGZHOU; South China University of Technology SCUT
Priority date: 2020-07-17
Filing date: 2020-07-17
Publication date: 2021-06-04
Anticipated expiration: 2030-07-17

Abstract

The utility model discloses a novel adjustable device of pitch scraping die bottom plate, the device comprises glass bottom plate, horizontal bubble calibrator and adjusting screw heel brace. Through setting up horizontal bubble calibrator and adjusting screw heel brace, overcome the non-standardization among the experimental operation process effectively, can make the glass bottom plate be under the horizontality, solve the pitch and pour into when trying the mould and flow and take place the problem of local delaminating with the examination mould, ensure the accuracy of experimental test result.

Description

Novel adjustable asphalt scraping mold bottom plate device

Technical Field

The utility model belongs to the technical field of bituminous mixture's laboratory glassware, concretely relates to device of ductility index of test pitch.

Background

At present, the ductility index of asphalt is generally quantitatively tested by adopting an asphalt ductility test. Before the ductility test is formally started, two steps of asphalt casting and water bath maintenance are required: after an 8-shaped standard test mold for asphalt ductility test is placed on a glass bottom plate, heated asphalt is slowly injected into the mold from one end of the test mold to the other end of the test mold back and forth for several times, and finally the asphalt is slightly higher than the test mold. And after cooling for 30-40 minutes, scraping the asphalt higher than the test mold by using a hot scraper to enable the asphalt surface to be flush with the test mold surface, and finishing the preparation of the ductility test sample. And then, the test mold and the glass bottom plate are immersed in a water tank with the specified test temperature for 1-1.5 h. However, since the way in which the glass substrate is placed is not strictly restricted by current test protocols, many testers will directly place the glass substrate and the "figure-8" standard specimen on a test bed for asphalt molding. However, because the test bed is not completely horizontal, a slight inclination angle exists between the glass bottom plate and the test mold placed on the test bed and the horizontal line, and due to the existence of the inclination angle, when asphalt is poured into the test mold, the asphalt is easy to flow obliquely, so that the asphalt cannot be completely contacted with the 8-shaped standard test mold. After the asphalt is cooled, certain delamination exists between the asphalt and the test mold at the position, namely the asphalt cannot be adhered to the inner wall of the 8-shaped standard test piece tightly and uniformly, and the test result is easily influenced due to uneven stress caused by the delamination position in the process of tensile test ductility of the asphalt sample.

SUMMERY OF THE UTILITY MODEL

Defect and not enough to above-mentioned prior art exists, the utility model aims to develop a novel pitch scraping die bottom plate adjustable device, overcome the experimental nonstandard operation of watering the mould of ductility, ensure the accuracy of experimental test result.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel pitch scraping die bottom plate is adjustable device, includes and comprises glass bottom plate, horizontal bubble calibrator and adjustable heel brace, glass bottom plate surface is crude, glass bottom plate four corners has the trompil respectively, adjustable heel brace have four install respectively in glass bottom plate four corners, and respectively with the trompil cooperation is connected, horizontal bubble calibrator is located on the glass bottom plate.

Furthermore, the holes at four corners of the glass bottom plate are threaded holes, the four adjustable foot supports are provided with threads, and the threads of the adjustable foot supports are connected with the threaded holes through the threads.

Further, the horizontal bubble calibrator is positioned near the handle on one side.

Preferably, the surface roughness of the glass substrate is Ra0.2 μm.

The utility model discloses for prior art have following beneficial effect:

through setting up horizontal bubble calibrator and adjusting screw heel brace, overcome the non-standardization among the experimental operation process effectively, can make the glass bottom plate be under the horizontality, solve the pitch and pour into when trying the mould and flow and take place the problem of local delaminating with the examination mould, ensure the accuracy of experimental test result.

Drawings

Fig. 1 is a front view of an example of the measuring device of the present invention.

In the drawings, the reference numbers: 1. glass bottom plate, 2, horizontal calibration appearance, 3, adjustable heel brace, 4, "8 font" standard test pieces.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figure 1, the utility model discloses a novel adjustable device of pitch scraping die bottom plate, including glass bottom plate 1, horizontal bubble calibrator 2 and adjusting screw heel brace 3. The surface roughness of the glass bottom plate 1 is Ra0.2 mu m, threaded holes are respectively formed in the four corners of the bottom of the glass bottom plate, and the four adjusting screw foot supports 3 are respectively installed at the four corners of the glass bottom plate 1 and are respectively matched and connected with the threaded holes. A sealed horizontal bubble calibrator 2 is arranged at one corner of the glass bottom plate.

Adopt this device with adjustable novel pitch scraping die bottom plate to carry out pitch ductility examination mould when watering the mould, the tester places this device on the test bench earlier, and four adjusting screw heel braces 3 of turn-knob make the bubble in the horizontal bubble calibrator 2 placed in the middle, and glass bottom plate 1 has been in the horizontality promptly. The 8-shaped standard test piece 4 is placed on the glass bottom plate 1, and the heated asphalt character test mold is slowly injected into the test mold from one end to the other end back and forth for a plurality of times and is finally slightly higher than the test mold. After the test mould is cooled, the asphalt higher than the test mould is scraped by a hot scraper, so that the asphalt surface is flush with the test mould surface. Then the tester is placed in a water bath for heat preservation and maintenance. After the maintenance is finished, the tester stably lifts the device and takes out the device from the water bath.

The utility model discloses a novel adjustable device of pitch scraping die bottom plate, its mounting means, connected mode or set up the mode and be common mechanical type, as long as can reach all can implement of its beneficial effect, this industry technical staff only need install and operate according to its subsidiary instructions.

The above only are the preferred embodiments of the utility model, but the protection scope of the utility model is not limited thereto, and any person skilled in the art is in the scope of the disclosure of the utility model, according to the technical solution of the utility model and the utility model, all belong to the protection scope of the utility model.

Claims

1. The utility model provides a novel pitch scraping die bottom plate is adjustable device, includes the glass bottom plate, its characterized in that still includes horizontal bubble calibrator and adjustable heel brace, the glass bottom plate is surperficial coarse and four corners open porosely respectively, adjustable heel brace have four install respectively in the four corners of glass bottom plate, and be connected with the trompil cooperation respectively, horizontal bubble calibrator is located on the glass bottom plate.

2. The novel adjustable device for the asphalt scraping mold base plate according to claim 1, wherein the holes at four corners of the glass base plate are threaded holes, the four adjustable foot supports are provided with threads, and the threads of the adjustable foot supports are connected with the threaded holes through the threads.

3. The novel adjustable asphalt scraping mold base plate device as claimed in any one of claims 1-2, wherein the horizontal bubble calibrator is located at one corner of the glass base plate.

4. The novel adjustable asphalt scraper base plate device as claimed in claim 3, wherein the surface roughness of said glass base plate is Ra0.2 μm.