CN112595584A

CN112595584A - Device for measuring tensile stress of rubber layer of airport pavement

Info

Publication number: CN112595584A
Application number: CN202110012413.1A
Authority: CN
Inventors: 庞铭; 刘玉洁; 张佳玮; 王鹏; 李婷; 龚星宇
Original assignee: Civil Aviation University of China
Current assignee: Civil Aviation University of China
Priority date: 2021-01-06
Filing date: 2021-01-06
Publication date: 2021-04-02

Abstract

A device for measuring the tensile stress of an airfield pavement adhesive layer. It comprises a grip, a box body, a slide block, a scale, a fixing clamp and a micro motor; the box body is composed of an upper box body and a lower box body, the rear ends of the upper box body and the lower box body are hinged together, the transverse sections of the upper box body and the lower box body are L-shaped, the left side parts of the upper box body and the lower box body protrude forwards, and a transverse opening is formed at the interface of the right side parts of the front end surfaces of the upper box body and the lower box body which are overlapped together to; one end of the handle is fixed on the rear end surface of the upper box body; the scale is arranged at the right part of the front end surface of the upper box body; the middle part of the sliding block is arranged on the sliding groove of the box body in a sliding way; the two fixing clamps are respectively arranged on the left side part of the box body and the opposite side surfaces of the sliding blocks; the output end of the micro motor is connected with the outside of the sliding block. The invention can accurately and conveniently measure the tensile mechanical property of the airfield pavement adhesive layer, has small volume and convenient carrying, and can be used in various occasions. Simple structure, the equipment is convenient to can conveniently change and constitute the part.

Description

Device for measuring tensile stress of rubber layer of airport pavement

Technical Field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a device for measuring tensile stress of an airport pavement adhesive layer.

Background

In the airport operation process, the temperature can be increased by rubbing the ground when an airplane lands, so that rubber of the tire of the airplane is melted and adhered to the airport pavement to form a pavement rubber layer. Along with the continuous thickening of the pavement rubber layer, the friction coefficient of the airport pavement is reduced, and therefore the takeoff and landing of the airplane are affected. Therefore, the airport pavement adhesive layer needs to be removed regularly to ensure safe and stable operation of the airport. In order to research a simpler and more reliable glue removing method, the tensile mechanical property of the pavement glue layer is generally required to be measured.

At present, a device for measuring the stress of a material, which is relatively common and professional, is relatively large, and has more complicated steps and longer time. But it is relatively wasteful in terms of the less stringent measurement requirements, and therefore it is relatively inconvenient to measure thin and light materials of the type such as pavement slabs for airports,

disclosure of Invention

In order to solve the above problems, the present invention provides a device for measuring the tensile stress of the rubber layer of the airport pavement.

In order to achieve the purpose, the device for measuring the tensile stress of the rubber layer of the airport pavement comprises a handle, a box body, a sliding block, a scale, a fixing clamp and a micro motor; the box body is composed of an upper box body and a lower box body, the rear ends of the upper box body and the lower box body are hinged together, the transverse sections of the upper box body and the lower box body are L-shaped, the left side parts of the upper box body and the lower box body protrude forwards, and a transverse opening is formed at the interface of the right side parts of the front end surfaces of the upper box body and the lower box body which are overlapped together to serve as a sliding chute; one end of the handle is fixed on the rear end surface of the upper box body; the scale is arranged at the right part of the front end surface of the upper box body; the middle part of the sliding block is arranged on the sliding groove of the box body in a sliding way; the two fixing clamps are respectively arranged on the left side part of the box body and the opposite side surfaces of the sliding blocks; the output end of the micro motor is connected with the outside of the sliding block.

The box body and the handle are both made of metal materials.

The middle parts of the top surface and the bottom surface of the sliding block are respectively inwards provided with a groove, and the two grooves are respectively clamped at the upper edge and the lower edge of the sliding groove on the box body.

The sliding block is of a hollow structure made of metal materials.

The device for measuring the tensile stress of the rubber layer of the airport pavement has the following beneficial effects:

the tensile mechanical property of airport pavement glue film can be measured relatively accurately and conveniently, and the airport pavement glue film has small volume and convenient carrying, thereby being capable of being used in various occasions. Simple structure, the equipment is convenient to can conveniently change and constitute the part.

Drawings

Fig. 1 is a perspective view of the structure of the device for measuring the tensile stress of the airfield pavement adhesive layer provided by the invention.

Fig. 2 is a perspective view of the lower half structure of the device for measuring the tensile stress of the airfield pavement adhesive layer provided by the invention.

Detailed Description

The following describes the device for measuring the tensile stress of the airport pavement rubber layer provided by the invention in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the device for measuring tensile stress of an airfield pavement adhesive layer provided by the invention comprises a handle 1, a box body 2, a sliding block 3, a scale 5, a fixing clamp 6 and a micro motor; the box body 2 is composed of an upper box body 2-1 and a lower box body 2-2, the rear ends of which are hinged together, the transverse sections of the upper box body 2-1 and the lower box body 2-2 are L-shaped, the left side parts of the upper box body 2-1 and the lower box body 2-2 protrude forwards, and a transverse opening is formed at the interface of the right side parts of the front end surfaces of the upper box body and the lower box body which are overlapped together to serve as a sliding chute 4; one end of the handle 1 is fixed on the rear end surface of the upper box body 2-1; the scale 5 is arranged at the right side part of the front end surface of the upper box body 2-1; the middle part of the sliding block 3 is arranged on the sliding groove 4 of the box body 2 in a sliding way; the two fixing clamps 6 are respectively arranged on the left side part of the box body 2 and the opposite side surfaces of the sliding block 3; the output end of the micro motor is connected with the outside of the sliding block 3.

The box body 2 and the handle 1 are both made of metal materials.

The middle parts of the top surface and the bottom surface of the sliding block 3 are respectively inwards provided with a groove, and the two grooves are respectively clamped at the upper edge and the lower edge of the upper chute 4 on the box body 2.

The sliding block 3 is a hollow structure made of a metal material, so that the sliding friction force is prevented from being increased due to too large mass, the measurement result of an experiment is influenced, and the sliding groove 4 can be damaged.

The use method of the device for measuring the tensile stress of the rubber layer of the airport pavement provided by the invention is explained as follows:

the method comprises the following steps: firstly, fixing two ends of an airport pavement adhesive layer for testing on two fixing clamps 6 of a box body 2 and a sliding block 3 respectively by a tester;

step two: the slide block 3 is pulled outwards by hand until the length of the airfield pavement adhesive layer when the airfield pavement adhesive layer is in free relaxation is reached, and the reading on the scale 5 is recorded;

step three: a certain amount of lubricating oil is coated on the contact surface of the sliding chute 4 and the sliding block 3, so that not only can the device be ensured to accurately and conveniently run, but also the lubricating oil can prevent the friction caused by the direct contact of the box body 2 and the sliding block 3;

step four: starting the micro motor, and pulling the sliding block 3 outwards along the sliding groove 4;

step five: when the airport pavement adhesive layer is broken, the micro motor is turned off, and the reading on the scale 5 is recorded for the subsequent related calculation;

step six: after the experiment is finished, the upper box body 2-1 is opened by the handle 1, and sundries in the upper box body 2-1 and the lower box body 2-2 are cleaned.

Claims

1. The utility model provides a measure airport pavement glue film tensile stress's device which characterized in that: the device for measuring the tensile stress of the adhesive layer of the airport pavement comprises a handle (1), a box body (2), a sliding block (3), a scale (5), a fixing clamp (6) and a micro motor; the box body (2) is composed of an upper box body (2-1) and a lower box body (2-2) which are hinged together at the rear ends, the transverse sections of the upper box body (2-1) and the lower box body (2-2) are L-shaped, the left parts of the upper box body and the lower box body protrude forwards, and a transverse opening is formed at the interface of the right parts of the front end surfaces of the upper box body and the lower box body which are overlapped together to serve as a sliding chute (4); one end of the handle (1) is fixed on the rear end face of the upper box body (2-1); the scale (5) is arranged at the right part of the front end surface of the upper box body (2-1); the middle part of the sliding block (3) is arranged on the sliding groove (4) of the box body (2) in a sliding way; the two fixing clamps (6) are respectively arranged on the left side part of the box body (2) and the opposite side surfaces of the sliding block (3); the output end of the micro motor is connected with the outside of the sliding block (3).

2. The apparatus of claim 1, wherein the means for measuring the tensile stress of the bond line of the airfield pavement comprises: the box body (2) and the handle (1) are both made of metal materials.

3. The apparatus of claim 1, wherein the means for measuring the tensile stress of the bond line of the airfield pavement comprises: the middle parts of the top surface and the bottom surface of the sliding block (3) are respectively inwards provided with a groove, and the two grooves are respectively clamped at the upper edge and the lower edge of the sliding groove (4) on the box body (2).

4. The apparatus of claim 1, wherein the means for measuring the tensile stress of the bond line of the airfield pavement comprises: the sliding block (3) is of a hollow structure made of metal materials.