Oscillation circuit of automobile test field

Abstract

The utility model discloses an automobile test field oscillation road which comprises a base layer and a surface layer, the top of the base layer is covered with the surface layer, and the top of the surface layer is further provided with a left lane and a right lane. The base layer comprises a granular material base layer and a semi-rigid base layer which are arranged from bottom to top; the right lane is internally provided with a same-direction washboard road and a reverse-direction washboard road, the same-direction washboard road and the reverse-direction washboard road are each provided with a plurality of wave forms which are evenly spaced, and the wave forms on the two roads are arranged in a peak staggering mode; according to the utility model, through unique equidirectional and reverse washboard road waveform peak staggering arrangement, complex vibration working conditions can be simulated; the right lane is provided with a two-percent left-high right-low cross slope, which is beneficial to drainage and prevents accumulated water from influencing the test and damaging the road; the device is simple in structure, small in waveform indirect direction and high in frequency, synchronous construction of the two sides of the washboard road surface can be guaranteed during construction, coordinates and elevation errors of wave crest and wave trough positions of the road surface are effectively reduced, and flatness quality deviation caused by manual control is avoided.

Description

Technical Field

[0001] This utility model specifically relates to an oscillation path for an automotive test track. Background Technology

[0002] An automotive proving ground is a specialized facility built specifically for vehicle performance testing, durability testing, and various research and development activities. It provides a testing environment for vehicles to perform under different conditions by simulating various real-world road conditions and special operating scenarios. Within an automotive proving ground, an oscillation track is a special test track that generates regular vibrations and bumps when a vehicle drives on it, simulating the vehicle's driving behavior on certain special road conditions or poor road surfaces.

[0003] Currently, the main construction method for the vibrating pavement of automotive test tracks involves tying the pavement reinforcement, positioning and installing the forward and reverse corrugated surface templates, pouring concrete to a height higher than the templates, and then manually shaping the forward and reverse curved pavement. However, the templates are easily disturbed during this construction process, resulting in large errors in the coordinates and elevations of the peaks and troughs of the pavement, as well as poor lateral flatness at the same curve position. The lack of effective control measures reduces the construction quality of the vibrating pavement.

[0004] Therefore, it is necessary to invent a vibration path for an automotive test track to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model

[0006] To address the technical problems existing in the background art, this utility model proposes an oscillating road for an automotive test track, which reduces the coordinate and elevation errors of the peak and trough positions of the road surface, and improves the lateral smoothness of the same curve position.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an oscillating road for an automobile test track, comprising a base layer and a surface layer, wherein the surface layer covers the top of the base layer, and a left lane and a right lane are respectively provided on the top of the surface layer;

[0009] The base layer includes a granular base layer and a semi-rigid base layer arranged from bottom to top;

[0010] The right lane is provided with a washboard road in the same direction and a washboard road in the opposite direction. Both the washboard road in the same direction and the washboard road in the opposite direction are provided with multiple evenly spaced waveforms. The waveforms on the two roads are staggered, that is, the peak of the waveform on the washboard road in the same direction corresponds to the trough of the waveform on the washboard road in the opposite direction.

[0011] The right lane is designed with a cross slope that is higher on the left and lower on the right.

[0012] Preferably, both the left lane and the right lane are set to be 3.5m wide and 50m long, wherein the washboard road in the same direction in the right lane is set to be 3m, the washboard road in the opposite direction is set to be 0.5m, and the wave pattern interval of each group is set to be 0.2m.

[0013] Preferably, the height of the waveform protruding from the surface layer is 0.018m, the length of each group of waveforms is 0.4m, the length of each group of washboard cycles is 0.6m, and each group of waveforms is a cosine wave curve.

[0014] Preferably, the granular base layer is a crushed stone layer with a thickness of 0.14m, and the semi-rigid base layer is a cement-stabilized crushed stone layer with a thickness of 0.32m.

[0015] Preferably, the surface layer is a reinforced concrete layer with a thickness of 0.22m, and both sides of the base layer and the surface layer are provided with slopes that gradually shorten from bottom to top. The left lane and the right lane are provided with road shoulders on both sides.

[0016] Preferably, the cross slope of the right lane is two percent.

[0017] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are:

[0018] 1. This utility model, through its unique staggered peak setting of unidirectional and reverse corrugated road waveforms, can simulate complex vibration conditions, comprehensively test vehicle suspension and shock absorption systems, accurately control and record data, and provide strong support for vehicle performance optimization.

[0019] 2. In this utility model, the right lane is designed with a 2% cross slope that is higher on the left and lower on the right, which facilitates drainage and prevents water accumulation from affecting the test and damaging the road. The road shoulders on both sides of the left and right lanes can provide lateral support and buffer, preventing vehicles from deviating from the lane and causing serious accidents. This significantly improves the safety and practicality of the test site and facilitates the efficient conduct of automobile testing.

[0020] 3. The waveform of this utility model has small indirection and high frequency, and can ensure that the two sides of the washboard road surface are constructed simultaneously during construction, effectively reducing the coordinate and elevation errors of the peak and trough positions of the road surface, and avoiding the flatness quality deviation caused by human control. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall planar structure of the present invention;

[0024] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0025] Figure 4 This is a schematic cross-sectional view of the right lane portion of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base course; 11. Granular base course; 12. Semi-rigid base course; 2. Surface course; 3. Left lane; 4. Right lane; 41. Corrugated road in the same direction; 42. Corrugated road in the opposite direction; 43. Wave-shaped; 5. Shoulder. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figure 1-4 The shown is an oscillating road for a car test track, including a base layer 1 and a surface layer 2. The surface layer 2 covers the top of the base layer 1, and a left lane 3 and a right lane 4 are respectively provided on the top of the surface layer 2.

[0030] Specifically, the base layer 1 includes a granular base layer 11 and a semi-rigid base layer 12 arranged from bottom to top;

[0031] Reference Figure 1-3 The right lane 4 is equipped with a washboard road 41 in the same direction and a washboard road 42 in the opposite direction. Both the washboard road 41 in the same direction and the washboard road 42 in the opposite direction are equipped with multiple evenly spaced waveforms 43. The waveforms 43 on the two roads are staggered, that is, the peak of the waveform 43 on the washboard road 41 in the same direction corresponds to the trough of the waveform 43 on the washboard road 42 in the opposite direction.

[0032] Specifically, the right lane 4 is designed with a cross slope that is higher on the left and lower on the right.

[0033] Specifically, both the left lane 3 and the right lane 4 are set to be 3.5m wide and 50m long. In the right lane 4, the washboard road 41 in the same direction is set to be 3m, and the washboard road 42 in the opposite direction is set to be 0.5m. Each set of waveforms 43 is set at an interval of 0.2m.

[0034] In this embodiment, the oscillation track of the vehicle test track is located on the right lane of the three-lane special road for light truck durability, with a total length of 50m and chainage of 9K0+109.6-9K0+160. The design speed is 20km / h. It consists of a 3m wide corrugated board on the right side in the same direction and a 0.5m wide corrugated board on the left side in the opposite direction. However, the peaks of the two waveforms are exactly offset, that is, the positive peak should correspond to the opposite trough.

[0035] Reference Figure 3 The height of the protruding surface layer 2 of waveform 43 is 0.018m, and the length of each group of waveform 43 is 0.4m. The length of each group of washboard cycles is 0.6m, and each group of waveform 43 is a cosine wave curve.

[0036] In this embodiment, the road surface structure of the oscillating road at the automotive test track is a 22cm~23.8cm reinforced concrete surface layer. The washboard road protrudes 1.8cm from the road surface in both directions. The cycle length of the washboard module is λ=0.6m, where the first 2 / 3λ is a cosine wave curve, and the last 1 / 3λ is a straight line flush with the ground. The waveforms are consistent, but the peaks of the two waveforms are staggered, i.e., the positive peak corresponds to the negative trough. The reinforcement configuration is the same as that of ordinary road surfaces, and joints are automatically determined during construction, with transverse joints avoiding the peaks.

[0037] Reference Figure 3-4 The granular base course 11 is a crushed stone layer with a thickness of 0.14m, and the semi-rigid base course 12 is a cement-stabilized crushed stone layer with a thickness of 0.32m.

[0038] Specifically, the surface layer 2 is a reinforced concrete layer with a thickness of 0.22m. Both sides of the base layer 1 and the surface layer 2 are provided with slopes, which gradually shorten from bottom to top. The left lane 3 and the right lane 4 are provided with shoulders 5 on both sides.

[0039] Specifically, the road surface is designed with a 2% cross slope (higher on the left and lower on the right) according to the direction of travel.

[0040] In this embodiment, the oscillating road of the automotive test track calculates the curve using a calculation formula, processes it using customized cutting curve templates, starts from the waveform starting point based on the amplitude, has a wavelength of 40cm, each waveform is spaced 20cm apart, and each template is 300cm long. The template assembly position is planned according to the peaks and troughs of the road surface curve amplitude. The template is precisely positioned and installed using a total station, controlling the edge line and peak and trough elevations of the corrugated road surface. The "post-pouring method" is adopted for construction, first pouring the positive waveform corrugated road surface, then pouring the negative waveform corrugated road surface. The curved surface is shaped by pre-embedded steel templates. The surface layer is formed by simultaneously scraping and leveling the self-made curved road surface to control the flatness of the curved road surface.

[0041] In this embodiment, the curve is calculated, the cutting curve template is customized and processed, and the "post-pouring method" is adopted for construction. First, the positive corrugated corrugated pavement is poured and the connecting steel bars of the slab are reserved. Then, the reverse corrugated corrugated pavement is poured and the fixed steel template is permanently embedded, so that the side of the opposite corrugated pavement is shaped completely and the junction is more stable.

[0042] In this embodiment, the "post-pouring method" is used, which extends the allowable working time, makes it easier to control the road surface construction quality, avoids quality problems of curved pavement, and ensures that the finished pavement passes acceptance inspection on the first attempt. A total station is used to lay out the peaks and troughs of the corrugated pavement at the automotive test track, controlling the shaping of the left and right side corrugated pavement separately. This allows for verification of the pre-embedded shaping and positioning curved surface templates, making the left and right side corrugated pavement at the automotive test track more complete. The corrugated pavement has a small waveform spacing and high frequency; the self-made curved pavement is simultaneously leveled for surface shaping, ensuring that both sides of the corrugated pavement can be constructed simultaneously, avoiding flatness quality deviations caused by human control.

[0043] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vibration track for an automotive test track, characterized in that: It includes a base layer (1) and a surface layer (2), the surface layer (2) covering the top of the base layer (1), and the top of the surface layer (2) is also provided with a left lane (3) and a right lane (4). The base layer (1) includes a granular base layer (11) and a semi-rigid base layer (12) arranged from bottom to top. The right lane (4) is provided with a washboard road (41) in the same direction and a washboard road (42) in the opposite direction. Both the washboard road (41) in the same direction and the washboard road (42) in the opposite direction are provided with multiple evenly spaced waveforms (43). The waveforms (43) on the two roads are staggered, that is, the peak of the waveform (43) on the washboard road (41) in the same direction corresponds to the trough of the waveform (43) on the washboard road (42) in the opposite direction. The right lane (4) is designed with a cross slope that is higher on the left and lower on the right.

2. The oscillation path for an automotive test track according to claim 1, characterized in that: The left lane (3) and the right lane (4) are both 3.5m wide and 50m long. The same-direction washboard road (41) in the right lane (4) is 3m long, and the opposite-direction washboard road (42) is 0.5m long. Each set of the waveforms (43) is spaced 0.2m apart.

3. The oscillation path for an automotive test track according to claim 2, characterized in that: The waveform (43) protrudes from the surface layer (2) by a height of 0.018m, and each group of the waveform (43) is 0.4m long, the length of each group of the washboard cycle is 0.6m, and each group of the waveform (43) is a cosine wave curve.

4. The oscillation path for an automotive test track according to claim 1, characterized in that: The granular base layer (11) is a crushed stone layer with a thickness of 0.14m, and the semi-rigid base layer (12) is a cement-stabilized crushed stone layer with a thickness of 0.32m.

5. The oscillation path for an automotive test track according to claim 1, characterized in that: The surface layer (2) is a reinforced concrete layer with a thickness of 0.22m. Both sides of the base layer (1) and the surface layer (2) are provided with slopes, which gradually shorten from bottom to top. Both sides of the left lane (3) and the right lane (4) are provided with road shoulders (5).

6. The oscillation path for an automotive test track according to claim 1, characterized in that: The cross slope of the right lane (4) is two percent.

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