Unpowered trolley racing track and method for rapidly measuring effective sliding distance of trolley

Abstract

The invention relates to an unpowered trolley racing track and a method for rapidly measuring the effective sliding distance of a trolley. The unpowered trolley racing track comprises a departure slope, an arc-shaped slope and a straight racing track body. The departure slope is used for providing initial kinetic energy for the unpowered trolley; the two ends of the arc-shaped slope are connected to the departure slope and the straight racing track correspondingly, and the arc-shaped slope is used for achieving smooth transition of the trolley from the slope to the horizontal state. Liquid crystal boards are connected to the two sides of the straight track respectively, and the liquid crystal boards and the straight track are the same in length; a plastic film is arranged on the liquid crystal board and used for displaying the track of the trolley sliding from the straight track to the liquid crystal board. The plastic film is provided with a size mark extending along the straight track and used for reading data of the initial intersection of the sideslip track of the trolley and the plastic film so as to obtain the effective sliding distance of the trolley, and the effective sliding distance serves as the measurement basis of the effective sliding distance of the unpowered trolley so as to evaluate the technical performance of the trolley. The sideslip track of the trolley can be quickly eliminated through resetting of the liquid crystal board structure, and the competition time is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching equipment, in particular to a non-powered trolley track and a method for quickly measuring the effective sliding distance of the trolley. Background Art

[0002] The track for the unpowered car event in the National Engineering Competition for College Students is typically flat and straight. Competitors design and assemble an unpowered car, then rely on gravity to glide along the track in a straight line, aiming to record the longest distance the car can travel on a flat, straight track. The rules of the competition are as follows: After the car glides unpowered down a runway at a 40° angle, 1 meter vertically, and 1 meter wide, its performance is evaluated by measuring its speed at the finish line, assuming the car can reach the finish line smoothly.

[0003] However, in actual competitions, many cars fail to reach the finish line. One scenario involves the car coming to a stop in the middle of the track. In this case, the production quality can be assessed by measuring the sliding distance directly on the track. Alternatively, the car may skid off the track, leaving it at either side while carrying speed. In this case, the effective sliding distance can be measured based on the point at which the car skids off the track, and the car's performance can be judged accordingly.

[0004] Traditional racetracks lack the function of recording sideslips. If an electronic distance measuring device is installed, although it can improve the accuracy of measurement, the electronic distance measuring device may be interfered with by the audience during the race, resulting in the collection of multiple sets of distance data, further increasing the difficulty of determining the actual departure position of the car, and the cost is relatively high.

[0005] In existing competitions, when a car skids on the track, the referee can often only visually observe the point where the car deviated from the track. Due to the large errors in manual observation, it is difficult to accurately determine the point where the car skidded off the track, and it is impossible to accurately measure the effective sliding distance of the car on the track, resulting in inaccurate judgments of the car's performance. Furthermore, relying on the referee's manual determination of the point is prone to unnecessary disputes, which is not conducive to the development of the unpowered car competition in the National Engineering Training Competition for College Students. Summary of the Invention

[0006] In response to the problems existing in the prior art, the purpose of the present invention is to provide a non-powered car track and a method for quickly measuring the effective sliding distance of the car, which can accurately measure the effective sliding distance of the car on the track, and is conducive to carrying out the non-powered car project of the National Engineering Training Competition for College Students.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A non-powered trolley race track comprises a starting slope, a curved slope and a straight track;

[0009] The starting ramp is used to provide initial kinetic energy for the unpowered trolley;

[0010] The two ends of the curved slope are connected to the starting slope and the straight track respectively, which is used to achieve a smooth transition of the car from the slope to the horizontal state;

[0011] Liquid crystal panels are connected to both sides of the straight track, and the length of the liquid crystal panels and the straight track are the same;

[0012] A plastic film is provided on the LCD panel to display the trajectory of the car sliding sideways from the straight track to the LCD panel;

[0013] The plastic film is provided with dimension marks extending along the straight track, which are used to read the data at the initial intersection of the car's side sliding trajectory and the plastic film to obtain the car's effective sliding distance.

[0014] Furthermore, the device further comprises a control device electrically connected to the liquid crystal panel for controlling the liquid crystal panel to reset so as to clear the side sliding track of the trolley on the liquid crystal panel.

[0015] Furthermore, a bottom plate layer is provided below the liquid crystal panel.

[0016] Furthermore, steps are provided on both sides of the straight track, and the liquid crystal panels are installed on the steps, and the upper surface of the liquid crystal panels is flush with the surface of the straight track.

[0017] Furthermore, the height of the step is 0.3 cm.

[0018] Furthermore, a curvature supporting device is provided on the back of the curved slope, and the curvature of the curvature supporting device is consistent with that of the curved slope.

[0019] Furthermore, the arc support device and the arc slope are both made of aluminum.

[0020] Furthermore, it also includes an end speed detection device, which is arranged at the end of the straight track and is used to detect the speed of the car reaching the end of the straight track.

[0021] A method for quickly measuring the effective sliding distance of a trolley comprises the following steps:

[0022] Place the unpowered trolley at the designated location on the departure ramp and release it to slide along the departure ramp under gravity;

[0023] The car smoothly enters the straight track via the curved slope and slides along the straight track;

[0024] If the car skids on a straight track, the plastic film on the LCD panel will show the trajectory of the car skidding from the straight track to the LCD panel.

[0025] The effective sliding distance of the trolley is obtained by reading the data of the initial intersection of the trolley's side sliding trajectory and the plastic film through the size mark on the plastic film.

[0026] Furthermore, after the measurement is completed, the liquid crystal panel is powered on and reset through the control device to clear the side sliding track of the car on the plastic film.

[0027] In general, the present invention has the following advantages:

[0028] This invention utilizes an improved unpowered car track system to accurately record the specific position of a car when it first leaves the straight track during a sideways slide. This position serves as a basis for measuring the effective sliding distance of the unpowered car and evaluating its technical performance. Furthermore, by resetting the liquid crystal panel structure, the car's sideways slide trajectory can be quickly eliminated, preparing for the next car's sliding measurement and significantly shortening competition preparation time. This invention overcomes the design limitations of existing unpowered car tracks, providing more accurate evaluation of car driving data, and facilitating the development of unpowered car projects for the National Engineering Training Competition for College Students. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the unpowered car raceway according to an embodiment of the present invention.

[0030] In the picture:

[0031] 1-Starting ramp; 2-Curved ramp; 21-Curved support device; 3-Straight track; 31-LCD panel. DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below.

[0033] like Figure 1 As shown, a non-powered car race track includes a starting slope 1, a curved slope 2 and a straight track 3;

[0034] The starting ramp 1 is a planar structure used to provide initial kinetic energy for the unpowered trolley. In this embodiment, it is a triangular slope with a height of 1m and a slope of 40 degrees.

[0035] The two ends of the arc-shaped slope 2 are respectively connected to the starting slope 1 and the straight track 3, so as to realize a smooth transition of the car from the slope to the horizontal state and avoid the impact caused by sudden changes in angle.

[0036] In this embodiment, the straight track 3 is 10 meters long and 2.4 meters wide. It is the main competition venue for the car and is used to fully demonstrate the performance of the car.

[0037] Liquid crystal panels 31 are connected to both sides of the straight track 3 , and the liquid crystal panels 31 and the straight track 3 have the same length.

[0038] A plastic film is provided on the liquid crystal panel 31 to display the trajectory of the car sliding from the straight track 3 to the liquid crystal panel 31, ensuring accurate data collection and thus providing a fair evaluation basis for the competition.

[0039] The plastic film is provided with dimension marks extending along the straight track 3, which are used to read the data at the initial intersection of the car's side sliding trajectory and the plastic film to obtain the effective sliding distance of the car.

[0040] In existing non-powered car races, when a car skids, the existing technology often involves manually recording the skid point. This has the obvious disadvantage of inaccurately locating the skid point by visual observation, leading to large errors in judging the car's performance. Using electronic ranging to measure the skidding distance of a car is problematic, but the cost of the electronic ranging equipment is high. Furthermore, interference from spectators' accidental touches can result in multiple measurement results, leading to confusion.

[0041] In the present application, liquid crystal panels 31 are arranged on both sides of the straight track 3, and a plastic film is arranged on the liquid crystal panels 31. When the vehicle slides sideways past the liquid crystal panels 31, the liquid crystal arrangement of the liquid crystal panels 31 will change accordingly, and the sliding trajectory of the vehicle will be displayed through the plastic film. Then, the size marks extending along the straight track 3 on the plastic film can be used to read the data at the initial intersection of the vehicle's sliding trajectory and the plastic film, thereby obtaining the effective sliding distance of the vehicle.

[0042] Liquid crystal displays (LCDs), as a high-definition display technology, are widely used in various electronic devices, including televisions, computers, and mobile phones, providing users with a superior visual experience. Through LCDs, people can watch high-definition movies and TV shows, browse the web, check emails, and access a variety of information.

[0043] However, no one in the prior art has thought of using the liquid crystal panel 31 to measure the sliding distance of an unpowered trolley. The present application cleverly uses the liquid crystal panel 31 to record the trolley's side sliding trajectory, and reads the data at the initial intersection of the side sliding trajectory and the plastic film through the size mark on the plastic film, thereby quickly obtaining the effective sliding distance of the trolley, achieving an unexpected technical effect. Compared to observing the side sliding point of the trolley with the naked eye, the present application records the side sliding trajectory of the trolley through the liquid crystal panel 31, and accurately obtains the position of the side sliding point through the initial intersection of the side sliding trajectory and the plastic film, with higher accuracy and no errors in visual measurement; compared to the laser ranging method, the present application avoids the confusion of multiple results caused by the audience's accidental touch in laser ranging, and the liquid crystal panel 31 is more cost-effective than laser ranging.

[0044] Since there are often many participants and the measurement process takes a long time, in order to quickly enter the measurement procedure of the next car after completing the measurement of one car, this application also provides a control device, which is electrically connected to the liquid crystal panel 31 and is used to control the reset of the liquid crystal panel 31 to clear the side sliding track of the car on the liquid crystal panel 31.

[0045] Specifically, LCD panel 31 is equipped with a battery and an on / off button (control device). Pressing the on / off button resets LCD panel 31, rearranging the liquid crystals on it. This quickly erases the track left by the previous car's sideways slide, preparing for the next car's measurement. This entire process is incredibly fast, improving work efficiency and making it particularly suitable for use at competitions where time is tight.

[0046] In this embodiment, the liquid crystal panel 31 displays the sliding track of the vehicle and the working principle of the liquid crystal panel 31 to reset and eliminate the traces are all based on existing technologies and will not be described in detail here.

[0047] Preferably, a bottom plate layer is provided under the liquid crystal panel 31 to enhance the strength of the liquid crystal panel 31 and extend the service life of the liquid crystal panel 31 .

[0048] In the present application, steps are provided on both sides of the straight track 3, and the liquid crystal panel 31 is installed on the steps. The upper surface of the liquid crystal panel 31 is flush with the surface of the straight track 3, avoiding a height difference between the liquid crystal panel 31 and the straight track 3. When the car slides sideways, it can smoothly enter the liquid crystal panel 31, and the car will not bounce due to the height difference, resulting in an unclear sideways sliding trajectory of the car, which is conducive to obtaining accurate measurement results.

[0049] In this embodiment, the height of the step is 0.3 cm.

[0050] To enhance the structural strength of the curved ramp 2, the present application provides a curved support device 21 on the back of the curved ramp 2. The curved support device 21 has the same curvature as the curved ramp 2. This enhanced structural strength prevents the vehicle from slowing down when sliding from the departure ramp 1 over the curved ramp 2. This allows the vehicle to slide further, facilitating measurement of the vehicle's true performance.

[0051] In this embodiment, the arc support device 21 and the arc slope 2 are both made of aluminum to prevent rust.

[0052] In order to measure the speed of the car that reaches the end of the track smoothly, the present application also provides an end speed detection device, which is set at the end of the straight track 3 and is used to detect the speed of the car that reaches the end of the straight track 3.

[0053] A method for quickly measuring the effective sliding distance of a trolley comprises the following steps:

[0054] Place the unpowered trolley at the designated position on the departure slope 1 and release it to slide along the departure slope 1 under gravity;

[0055] The car smoothly enters the straight track 3 via the curved slope 2 and slides along the straight track 3;

[0056] If the car skids on the straight track 3, the plastic film on the liquid crystal panel 31 will display the trajectory of the car skidding from the straight track 3 to the liquid crystal panel 31.

[0057] The effective sliding distance of the trolley is obtained by reading the data of the initial intersection of the trolley's side sliding trajectory and the plastic film through the size mark on the plastic film.

[0058] After the effective sliding distance is measured, the liquid crystal panel 31 is powered on and reset by the control device to clear the side sliding track of the car on the plastic film.

[0059] In the present invention, the starting ramp 1 provides the car with initial kinetic energy, allowing it to smoothly transition to the straight track 3 via the curved ramp 2, ensuring stability at the start of the race and avoiding energy loss caused by the impact of the car contacting the straight track 3 at a large angle. The straight track 3 is the main sliding part and can fully demonstrate the manufacturing performance of the car. The recording devices installed on both sides of the straight track 3 use a liquid crystal panel 31 structure to record the car's side sliding trajectory, ensuring the accuracy of data collection. By reading the size markings on the plastic film on the liquid crystal panel 31, the car's side sliding point and distance can be quickly recorded, thereby providing a fair evaluation basis for the competition. Through precise recording and analysis, the performance of different vehicles can be compared under different side sliding conditions, improving the fairness and satisfaction of the competition, making the competition fairer and more competitive.

[0060] The present invention creates a more dynamic and fair testing platform, effectively solving the defects in traditional track design, improving the accuracy of the method for evaluating vehicle performance, making the performance of cars of different production levels on the track more distinct, and better reflecting the overall quality of non-powered cars, providing data support for more accurate competition evaluation, and further providing technical basis and support for various purposes such as acceptance, teaching or entertainment, bringing significant technological progress to the track design and competition activities of non-powered cars.

[0061] The present invention is also applicable to occasions such as side slip measurement of wheeled equipment such as four-wheeled food delivery carts, wheeled robots, and wheelchairs, including education, industry, and competition activities.

[0062] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A non-powered car race track, characterized in that: Including starting ramps, curved ramps and flat tracks; The starting ramp is used to provide initial kinetic energy for the unpowered trolley; The two ends of the curved slope are connected to the starting slope and the straight track respectively, which is used to achieve a smooth transition of the car from the slope to the horizontal state; Liquid crystal panels are connected to both sides of the straight track, and the length of the liquid crystal panels and the straight track are the same; A plastic film is provided on the LCD panel to display the trajectory of the car sliding sideways from the straight track to the LCD panel; The plastic film is provided with dimension marks extending along the straight track, which are used to read the data at the initial intersection of the car's side sliding trajectory and the plastic film to obtain the car's effective sliding distance.

2. The racetrack according to claim 1, characterized in that: The device also includes a control device, which is electrically connected to the liquid crystal panel and is used to control the liquid crystal panel to reset so as to clear the side sliding track of the trolley on the liquid crystal panel.

3. The racetrack according to claim 1, characterized in that: A bottom plate layer is provided below the liquid crystal panel.

4. The racetrack according to claim 1, characterized in that: Steps are provided on both sides of the straight track, and the liquid crystal panels are installed on the steps, and the upper surface of the liquid crystal panels is flush with the surface of the straight track.

5. The racetrack according to claim 4, characterized in that: The height of the steps is 0.3 cm.

6. The racetrack according to claim 1, characterized in that: A radian support device is provided on the back of the curved slope, and the radian support device is consistent with the radian of the curved slope.

7. The racetrack according to claim 6, characterized in that: The curved support device and the curved slope are made of aluminum.

8. The racetrack according to claim 1, characterized in that: It also includes an end point speed detection device, which is arranged at the end of the straight track and is used to detect the speed of the car that reaches the end point of the straight track.

9. A method for quickly measuring the effective sliding distance of a trolley, characterized in that: The racetrack according to any one of claims 1 to 8 comprises the following steps: Place the unpowered trolley at the designated location on the departure ramp and release it to slide along the departure ramp under gravity; The car smoothly enters the straight track via the curved slope and slides along the straight track; If the car skids on a straight track, the plastic film on the LCD panel will show the trajectory of the car skidding from the straight track to the LCD panel. The effective sliding distance of the trolley is obtained by reading the data of the initial intersection of the trolley's side sliding trajectory and the plastic film through the size mark on the plastic film.

10. The method according to claim 9, characterized in that After the measurement is completed, the control device is used to power on and reset the LCD panel to clear the side sliding track of the car on the plastic film.

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