Movable continuous ice and snow pavement friction resistance testing device

Abstract

The invention discloses a movable continuous ice and snow pavement surface friction performance testing device. The device comprises a stepping motor, a blocking piece, a spring, a movable sliding plate, an impact plate, a bottom plate, a lower meshing piece, an upper meshing piece, a connecting rod, a rubber block, a vertical connecting rod, a transverse connecting rod, a fixed arc-shaped plate, a speed sensor, a temperature sensor, a wind speed sensor, a wind shield, a processor and a base plate. The device has the advantages that the device is simple, easy to operate and convenient to move, a temperature sensor, a wind speed sensor and a speed sensor are arranged in the device, and the device can efficiently and accurately evaluate the friction resistance performance of different types of ice and snow airport pavements in severe environments such as polar regions and the like through accurate energy release, stable ejection control and accurate data processing and analysis; and important technical support is provided for guaranteeing traffic transportation safety and pavement maintenance.

Description

Technical Field

[0001] The invention belongs to the field of ice and snow airport construction, and in particular relates to a movable continuous ice and snow road surface friction test device. Background Art

[0002] The polar regions are remote from the mainland, occupy vast expanses, and are perennially covered in ice and snow. Therefore, activities there rely heavily on air transport. Compared to other intercontinental regions, the polar regions currently lack a comprehensive aviation network. Building a polar aviation network is a crucial path toward becoming a leading polar exploration nation. Historically, polar transportation has primarily relied on ship cargo and small helicopters. Therefore, building fixed-wing runways in the polar regions could significantly enhance a country's transportation capabilities in Antarctica and serve as essential infrastructure for activities such as polar scientific research and engineering construction.

[0003] The coefficient of friction is a key indicator of a pavement's anti-skid performance, and its value directly impacts the safety of aircraft operating or taking off and landing on the runway. Accurately measuring the coefficient of friction is crucial for ensuring traffic safety, rationally designing pavement structures, and timely evaluating pavement performance. Icy runways have significantly lower frictional resistance than conventional runways and are more susceptible to the harsh weather conditions of polar regions. Therefore, assessing the frictional resistance of icy runways in polar regions is crucial.

[0004] Currently, common methods for measuring road surface friction coefficients include braking and dragging methods. However, these methods have some limitations, such as the bulky equipment required, complex operation, and high requirements for the measurement environment. In addition, measurement accuracy is difficult to guarantee under certain special road surface conditions. Therefore, friction test methods for polar ice and snow runway surfaces may face some challenges. On the one hand, the polar environment is harsh, and the test equipment needs to be highly reliable and stable to cope with extreme conditions such as low temperature and high humidity. On the other hand, the surface characteristics of ice and snow runways are complex and changeable, and a variety of test methods and means are needed to comprehensively evaluate their friction performance.

[0005] Therefore, it is of great practical significance to develop a device that has a simple structure, is easy to operate, can adapt to ice and snow roads in polar regions, and can accurately calculate the road surface friction coefficient. Summary of the Invention

[0006] In order to solve the above problems, the purpose of the present invention is to provide a movable continuous ice and snow road surface friction performance testing device.

[0007] In order to achieve the above-mentioned purpose, the movable continuous ice and snow road surface friction performance testing device provided by the present invention includes a stepping motor, a blocking member, a spring, a movable slide, an impact plate, a bottom plate, a lower engaging member, an upper engaging member, a connecting rod, a rubber block, a vertical connecting rod, a horizontal connecting rod, a fixed arc plate, a speed sensor, a temperature sensor, a wind speed sensor, a wind shield, a processor and a pad; wherein the bottom plate is horizontally arranged, and a slide is provided in the middle of the top surface along the length direction; the bottom surface of the movable slide is installed in the middle and rear part of the slide on the bottom plate, and the middle of the top surface is provided along the length direction. A slideway is also provided in the degree direction; the bottom surface of the impact plate is slidably mounted on the middle part of the slideway on the movable slide; the lower end of the blocking member is fixed to the middle part of the top surface of the rear end of the movable slide, the lower part of the front end surface is connected to the rear end of the horizontally arranged spring, and the front end of the top is an inclined surface extending forward from the lower part; the lower end of the lower engaging member is fixed to the middle part of the top surface of the rear end of the impact plate, and the rear end is connected to the front end of the spring; the stepping motor is arranged on the outer side of the rear end of the base plate, the output shaft extends forward and the front end is connected to the rear end of the blocking member; the lower end of the vertical connecting rod is fixed to one side of the front end of the base plate; The horizontal connecting rod is located above the front end of the bottom plate, and one end is connected to the upper end of the vertical connecting rod; the front end of the connecting rod is sleeved in the middle of the horizontal connecting rod, so it can rotate up and down with the horizontal connecting rod as the axis, and the rear end is located on the upper side of the impact plate, and the rear end is an inclined surface that can fit with the inclined surface of the top front end of the blocking member; the upper engaging member is installed on the rear bottom surface of the connecting rod and is located in front of the lower engaging member; the rubber block is initially placed in the middle of the front end of the bottom plate; the windshield is a vertically arranged rectangular plate, and the two windshields are arranged in parallel in the front and rear directions in front of the bottom plate, and And they are respectively aligned with the edges of both sides of the base plate; the pad is set at an angle, and the front and rear ends are respectively connected to the rear end bottom surface of the two windshields and the front end top surface of the base plate; the lower ends of the two fixed arc plates are respectively connected to the front and rear parts of the upper ends of the two windshields; the upper end of each windshield is respectively installed with a speed sensor, a temperature sensor and a wind speed sensor for real-time monitoring of the sliding speed of the rubber block, the ambient temperature and the wind speed; the processor is installed on the outer surface of the windshield and is respectively electrically connected to the stepper motor, the speed sensor, the temperature sensor and the wind speed sensor.

[0008] The movable continuous ice and snow road surface friction performance testing device also includes a magnetic strip and a magnetic plate; a magnetic plate is installed on the inner side of each windshield; and magnetic strips are installed on both sides of the rubber block.

[0009] The upper portion of the front end surface of the lower engaging member and the rear end surface of the upper engaging member have the same cross-sectional area.

[0010] The movable continuous ice and snow road surface friction performance testing device provided by the present invention has the following beneficial effects:

[0011] The device is simple and easy to operate and move. It contains temperature sensors, wind speed sensors, and speed sensors. Through precise energy release, stable ejection control, and accurate data processing and analysis, the device can efficiently and accurately evaluate the friction performance of different types of ice and snow airport pavements in harsh environments such as polar regions, providing important technical support for ensuring transportation safety and pavement maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of the movable continuous ice and snow road surface friction performance testing device provided by the present invention.

[0013] Figure 2 A side view of the movable continuous ice and snow road surface friction performance testing device provided by the present invention.

[0014] Figure 3 A top view of the movable continuous ice and snow road surface friction performance testing device provided by the present invention. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] like Figure 1-Figure 3As shown, the movable continuous ice and snow road surface friction performance testing device provided by the present invention includes a stepping motor 1, a blocking member 2, a spring 3, a movable slide 4, an impact plate 5, a bottom plate 6, a lower engaging member 7, an upper engaging member 8, a connecting rod 9, a rubber block 10, a vertical connecting rod 11, a horizontal connecting rod 12, a fixed arc plate 13, a speed sensor 14, a temperature sensor 15, a wind speed sensor 16, a wind shield 17, a processor 18 and a pad 20; wherein the bottom plate 6 is horizontally arranged, and a slide is provided in the middle of the top surface along the length direction; the bottom surface of the movable slide 4 is installed in the middle and rear part of the slide on the bottom plate 6, and the top surface is provided with a plurality of movable slides. The bottom of the impact plate 5 is mounted on the middle of the slide on the movable slide 4 in a sliding manner; the lower end of the blocking member 2 is fixed to the middle of the top surface of the rear end of the movable slide 4, and the lower part of the front end surface is connected to the rear end of the horizontally arranged spring 3, and the top front end is an inclined surface extending forward from the lower part; the lower end of the lower engaging member 7 is fixed to the middle of the top surface of the rear end of the impact plate 5, and the rear end is connected to the front end of the spring 3; the stepping motor 1 is arranged on the outer side of the rear end of the base plate 6, and the output shaft extends forward and the front end is connected to the rear end of the blocking member 2; the lower end of the vertical connecting rod 11 is fixed to one side of the front end of the base plate 6; the horizontal connecting rod 12 is located at The front end of the bottom plate 6 is above the bottom plate 6, and one end is connected to the upper end of the vertical connecting rod 11; the front end of the connecting rod 9 is sleeved in the middle of the horizontal connecting rod 12, so that it can rotate up and down with the horizontal connecting rod 12 as the axis, and the rear part is located on the upper side of the impact plate 5, and the rear end is a slope that can fit with the slope of the top front end of the blocking member 2; the upper engaging member 8 is installed on the rear bottom surface of the connecting rod 9 and is located in front of the lower engaging member 7; the rubber block 10 is initially placed in the middle of the front end of the bottom plate 6; the windshield 17 is a vertically arranged rectangular plate, and the two windshields 17 are arranged in parallel in the front and rear directions in front of the bottom plate 6, and are respectively connected to the bottom plate 6. The edges on both sides are aligned; the pad 20 is set at an angle, and the front and rear ends are respectively connected to the rear end bottom surface of the two windshields 17 and the front end top surface of the bottom plate 6; the lower ends of the two fixed arc plates 13 are respectively connected to the front and rear parts of the upper ends of the two windshields 17; the upper end of each windshield 17 is respectively installed with a speed sensor 14, a temperature sensor 15 and a wind speed sensor 16 for real-time monitoring of the sliding speed, ambient temperature and wind speed of the rubber block 10; the processor 18 is installed on the outer surface of the windshield 17 and is electrically connected to the stepper motor 1, the speed sensor 14, the temperature sensor 15 and the wind speed sensor 16.

[0017] The movable continuous ice and snow road surface friction performance testing device also includes magnetic strips and magnetic plates 19; a magnetic plate 19 is installed on the inner side of each windshield 17; magnetic strips are installed on both sides of the rubber block 10 to ensure that the rubber block 10 can move in a predetermined direction to avoid offset or jamming.

[0018] The upper portion of the front end surface of the lower engaging member 7 and the rear end surface of the upper engaging member 8 have the same cross-sectional area.

[0019] The method for using the movable continuous ice and snow road surface friction performance testing device provided by the present invention is described as follows:

[0020] First, the tester places the rubber block 10 on the middle of the front end of the base plate 6 and presses down the rear end of the connecting rod 9; under the control of the processor 18, the stepper motor 1 is started, thereby pushing the blocking member 2, the spring 3, the movable slide 4 and the impact plate 5 to move forward along the slideway on the base plate 6. When the lower engaging member 7 contacts the upper engaging member 8, the impact plate 5 is constrained to stop moving, and the spring 3 is squeezed until the blocking member 2 contacts the rear end of the connecting rod 9, thereby using the blocking member 2 to push the rear end of the connecting rod 9 upward. At this time, the impact plate 5 will lose its constraint, and then the elastic force of the spring 3 will be used to pop the impact plate 5 forward and hit the rubber block 10 forward. The rubber block 10 then slides through the backing plate 20 into the space between the two windshields 17 and moves in a predetermined direction under the action of the magnetic strips on both sides of the rubber block 10 and the magnetic plates 19 on the inner side of the windshield 17 to avoid deviation or jamming. During this process, the speed sensor 14, temperature sensor 15, and wind speed sensor 16 respectively collect real-time data on the movement speed of the rubber block 10, the ambient temperature, and the wind speed, and transmit them to the processor 18. The processor 18 processes and analyzes the collected data in real time, and based on the collected climate factors and displacement measurement data, combined with a pre-established mathematical model, corrects and calculates the road surface friction coefficient.

Claims

1. A movable continuous ice and snow road surface friction performance testing device, characterized by: The movable continuous ice and snow road surface friction performance test device comprises a stepping motor (1), a blocking member (2), a spring (3), a movable slide plate (4), an impact plate (5), a bottom plate (6), a lower engaging member (7), an upper engaging member (8), a connecting rod (9), a rubber block (10), a vertical connecting rod (11), a horizontal connecting rod (12), a fixed arc plate (13), a speed sensor (14), a temperature sensor (15), a wind speed sensor (16), a windshield (17), a processor (18) and a pad (20); wherein the bottom plate (6) is arranged horizontally, and a slide is provided in the middle of the top surface along the length direction; the bottom surface of the movable slide plate (4) is installed in the middle and rear part of the slide on the bottom plate (6), The middle of the top surface is also provided with a slideway along the length direction; the bottom surface of the impact plate (5) is mounted on the middle of the slideway on the movable slide plate (4) in a sliding manner; the lower end of the blocking member (2) is fixed to the middle of the top surface of the rear end of the movable slide plate (4), the lower part of the front end surface is connected to the rear end of the horizontally arranged spring (3), and the front end of the top is an inclined surface extending forward from the lower part; the lower end of the lower engaging member (7) is fixed to the middle of the top surface of the rear end of the impact plate (5), and the rear end is connected to the front end of the spring (3); the stepping motor (1) is arranged on the outer side of the rear end of the bottom plate (6), the output shaft extends forward and the front end is connected to the rear end of the blocking member (2); the lower end of the vertical connecting rod (11) is fixed to one side of the front end of the bottom plate (6); the horizontal connecting rod (12) is located at the bottom of the bottom plate (6). The front end of the connecting rod (9) is above the front end of the bottom plate (6), and one end is connected to the upper end of the vertical connecting rod (11); the front end of the connecting rod (9) is sleeved in the middle of the horizontal connecting rod (12), so that it can rotate up and down with the horizontal connecting rod (12) as the axis, and the rear end is located on the upper side of the impact plate (5), and the rear end is a slope that can fit with the slope of the top front end of the blocking member (2); the upper engaging member (8) is installed on the rear bottom surface of the connecting rod (9) and is located in front of the lower engaging member (7); the rubber block (10) is initially placed in the middle of the front end of the bottom plate (6); the windshield (17) is a vertically arranged rectangular plate, and the two windshields (17) are arranged in parallel in the front and rear directions in front of the bottom plate (6), and are respectively connected to the bottom plate (6) The edges of both sides are aligned; the pad (20) is tilted, and the front and rear ends are respectively connected to the rear end bottom surfaces of the two windshields (17) and the front end top surface of the bottom plate (6); the lower ends of the two fixed arc-shaped plates (13) are respectively connected to the front and rear parts of the upper ends of the two windshields (17); the upper end of each windshield (17) is respectively installed with a speed sensor (14), a temperature sensor (15) and a wind speed sensor (16) for real-time monitoring of the sliding speed of the rubber block (10), the ambient temperature and the wind speed; the processor (18) is installed on the outer surface of the windshield (17) and is respectively electrically connected to the stepping motor (1), the speed sensor (14), the temperature sensor (15) and the wind speed sensor (16).

2. The movable continuous ice and snow road surface friction performance testing device according to claim 1 is characterized in that: The movable continuous ice and snow road surface friction performance test device also includes a magnetic strip and a magnetic plate (19); a magnetic plate (19) is respectively installed on the inner side of each windshield (17); and magnetic strips are respectively installed on both sides of the rubber block (10).

3. The movable continuous ice and snow road surface friction performance testing device according to claim 1 is characterized in that: The upper portion of the front end surface of the lower engaging member (7) and the rear end surface of the upper engaging member (8) have the same cross-sectional area.

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