CN212391314U

CN212391314U - Pitch self-heating scraping die cutter

Info

Publication number: CN212391314U
Application number: CN201921438243.8U
Authority: CN
Inventors: 苏国城; 虞将苗; 胡美娟
Original assignee: Guangzhou Xiaoning Institute Of Roadway Engineering Co ltd; South China University of Technology SCUT
Current assignee: Guangzhou Xiaoning Institute Of Roadway Engineering Co ltd; South China University of Technology SCUT
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-01-22
Anticipated expiration: 2029-08-29

Abstract

The utility model provides a pitch self-heating scraping die cutter device, it includes blade, handle of a knife and resistance unit that generates heat, and the blade is connected with the handle of a knife, at blade and handle of a knife internally mounted resistance unit that generates heat, the end that the handle of a knife was kept away from to the blade is the arc. The device has characteristics such as simple structure, convenient operation, and the knife face of radian is favorable to forming standard sample, has improved the precision of detection experiment. Meanwhile, the controllable switch button comprises a plurality of gears, and the heating device with adjustable power also avoids potential safety hazards of asphalt ignition.

Description

Pitch self-heating scraping die cutter

Technical Field

The utility model relates to a road pitch performance detects with appurtenance technical field, concretely relates to pitch self-heating die scraping cutter.

Background

In highway engineering, the performance index of asphalt directly influences the quality of a highway pavement, and the basic process of measurement is as follows: the release agent prepared by talcum powder =1:1 (mass ratio) is smeared and put in a special mould, and the melted sample asphalt is injected into the mould. The sample was cooled at room temperature, cut off with a hot knife, and the mold was placed in a water bath at the test temperature for at least one and a half hours before being transferred to a ductility meter. And (3) stretching the asphalt test piece to the length of the asphalt test piece when the asphalt test piece is broken at a certain speed at a certain temperature, namely the ductility of the asphalt test piece. In the asphalt test, when the asphalt is stretched to a length of 10cm at a certain speed at a certain temperature, the asphalt is cut off from the middle by using scissors, and the length change of the test piece is measured after the maintenance for one hour, so that the elastic recovery performance of the asphalt can be obtained.

At present, a metal cutter is heated by other heating methods such as an electric furnace or an oven, and asphalt is melted by using the heat of the cutter to scrape the mold. The knife face of the knife is a plane.

This operation has the drawbacks that: the method of heating the cutter on an electric furnace or an oven is not simple and convenient enough, and the indirect heating also prolongs the test time to a certain extent; due to the structure of the cutter face of the cutter, an asphalt sample is easy to stick on the cutter face during scraping the mold, and the asphalt on the cutter face is easy to catch fire when the asphalt is heated on an electric furnace or an oven again, so that great potential safety hazards exist; meanwhile, the planar knife face structure easily causes the movement of the die, and brings inconvenience to the die scraping to a certain extent.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides an asphalt self-heating scraping mould cutter device, the technical problem to be solved is that the current scraper uses the potential safety hazard problem inconvenient and exist.

The utility model provides a technical scheme that its technical problem adopted one of at least as follows.

Pitch self-heating mold scraping cutter, including blade, handle of a knife and resistance heating element, blade and handle of a knife are connected, at blade and handle of a knife internally mounted resistance heating element, wherein, at blade and handle of a knife internally mounted resistance heating element, the end that the blade kept away from the handle of a knife is the arc.

Furthermore, the resistance heating unit comprises a heating resistance wire and a battery jar, the heating resistance wire is arranged inside the knife body, and the battery jar is arranged inside the knife handle.

Furthermore, one end of the battery jar is connected with the heating resistance wire, and the other end of the battery jar is connected with the charger.

Furthermore, a lithium ion storage battery capable of being charged and discharged for multiple times is arranged in the battery jar.

Furthermore, a controllable switch button is arranged on the side face of the knife handle and used for controlling and adjusting the working state of the resistor.

Further, the controllable switch button is divided into a low gear, a medium gear, a high gear and off.

Further, the radian of the tail end of the knife body is 1/2 pi-5/6 pi.

The utility model has the advantages that: the cutter is pitch ductility and modified asphalt elasticity resumes to detect and uses mould, has characteristics such as simple structure, convenient operation, safe and reliable, and the blade that has certain radian is favorable to forming standard sample, has improved the precision that detects the experiment. Meanwhile, the controllable switch button comprises a plurality of gears, and the heating device with adjustable power also avoids potential safety hazards of asphalt ignition.

Drawings

FIG. 1 is a front view of a pitch self-heating doctor blade assembly;

FIG. 2 is a left side view of the pitch self-heating doctor blade assembly configuration;

in the figure: 1-knife body, 2-knife handle, 3-heating resistance wire, 4-battery jar, 5-storage battery, 6-charger, 7-controllable switch button.

Detailed Description

The following further describes the practice of the present invention with reference to the drawings and examples, but the practice and protection of the present invention is not limited thereto.

Example 1

As shown in fig. 1 and 2, the utility model relates to an asphalt self-heating mold scraping cutter is asphalt ductility and modified asphalt elasticity resume and detect and use the mould, including blade 1, hilt 2 and inside resistance heating element, resistance heating element includes heating resistor wire 3 and battery jar 4.

The tail end of the knife body 1 is an arc knife face with the radian of 1/2 pi, the heating resistance wire 3 is arranged inside the knife body 1, the heating resistance wire 3 is electrically connected with the battery jar 4 inside the knife handle 2, and the heating resistance wire 3 is electrified to generate heat during normal work. The other end of the battery jar 4 is connected with a charger 6, and a lithium ion storage battery 5 which can be charged and discharged for a plurality of times is arranged in the battery jar 4. The side surface of the knife handle 2 is provided with a controllable switch button 7 for adjusting the working temperature of the knife.

When the matrix asphalt is subjected to die scraping: the controllable switch 7 is adjusted to the low level, the temperature is 150 ℃, and preheating is carried out for 5 min. And respectively scraping the mold from the middle of the fixed mold sample to two sides. After the mould is scraped, the scraped sample part can be thrown away only by lightly knocking the cutter in the waste box. After the scraping die is finished, the switch button is turned off, and the knife face is wiped clean as soon as possible by utilizing waste heat so as to be convenient to use next time.

Example 2

The tail end of the knife body 1 is an arc knife face with the radian of 2/3 pi, the heating resistance wire 3 is arranged inside the knife body 1, the heating resistance wire 3 is electrically connected with the battery jar 4 inside the knife handle 2, and the heating resistance wire 3 is electrified to generate heat during normal work. The other end of the battery jar 4 is connected with a charger 6, and a lithium ion storage battery 5 which can be charged and discharged for a plurality of times is arranged in the battery jar 4. The side of the knife handle is provided with a controllable switch button 7 for adjusting the working temperature of the knife.

When the modified asphalt is subjected to die scraping: the controllable switch 7 is adjusted to the middle gear, the temperature is 200 ℃, and preheating is carried out for 5 min. And respectively scraping the mold from the middle of the fixed mold sample to two sides. After the mould is scraped, the scraped sample part can be thrown away only by lightly knocking the cutter in the waste box. After the scraping die is finished, the switch button is turned off, and the knife face is wiped clean as soon as possible by utilizing waste heat so as to be convenient to use next time.

Example 3

The tail end of the knife body is an arc knife face with the radian of 5/6 pi, the heating resistance wire 3 is arranged inside the knife body 1, the heating resistance wire 3 is electrically connected with the battery jar 4 inside the knife handle 2, and the heating resistance wire 3 is electrified to generate heat during normal work. The other end of the battery jar 4 is connected with a charger 6, and a lithium ion storage battery 5 which can be charged and discharged for many times is arranged in the battery jar. The side of the knife handle is provided with a controllable switch button 7 for adjusting the working temperature of the knife.

When the modified asphalt with higher heat resistance is subjected to die scraping: the controllable switch 7 is adjusted to high grade, the temperature is 250 ℃, and preheating is carried out for 5 min. And respectively scraping the mold from the middle of the fixed mold sample to two sides. After the mould is scraped, the scraped sample part can be thrown away only by lightly knocking the cutter in the waste box. After the scraping die is finished, the switch button is turned off, and the knife face is wiped clean as soon as possible by utilizing waste heat so as to be convenient to use next time.

The above operations can be used both when the accumulator 5 is charged and when it is charged, but for the sake of the life of the accumulator, it is recommended to use the pitch self-heating doctor blade when the accumulator is charged.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should be able to make various modifications and improvements to the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides an pitch self-heating mold scraping cutter which characterized in that, includes blade (1), hilt (2) and resistance heating unit, and blade (1) is connected with hilt (2), at blade (1) and hilt (2) internally mounted resistance heating unit, the end that blade (1) kept away from the hilt is the arc.

2. The asphalt self-heating scraping die cutter as claimed in claim 1, wherein the resistance heating unit comprises a heating resistance wire and a battery jar, the heating resistance wire (3) is installed inside the cutter body (1), and the battery jar is arranged inside the cutter handle (2).

3. The cutter for self-heating asphalt scraping mold according to claim 2, characterized in that one end of the battery jar is connected with the heating resistance wire (3), and the other end is connected with the charger (6).

4. The asphalt self-heating scraping tool according to claim 3, wherein the battery container is internally provided with a lithium ion battery (5) capable of being charged and discharged for multiple times.

5. The self-heating asphalt scraping tool according to claim 1, wherein a controllable switch button (7) is arranged on the side surface of the tool holder (2) for controlling and adjusting the working state of the resistor.

6. Asphalt self-heating scraping tool according to claim 5, characterized in that the controllable switch button (7) is divided into low, medium, high and off.

7. The asphalt self-heating scraping die cutter as claimed in claim 1, wherein the radian of the tail end of the cutter body (1) is 1/2-5/6 pi.