CN216826777U - Projection device for vehicle test track - Google Patents
Projection device for vehicle test track Download PDFInfo
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- CN216826777U CN216826777U CN202123299211.4U CN202123299211U CN216826777U CN 216826777 U CN216826777 U CN 216826777U CN 202123299211 U CN202123299211 U CN 202123299211U CN 216826777 U CN216826777 U CN 216826777U
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Abstract
The utility model relates to a projection device for vehicle test track, a water pump (3) is communicated with a power supply (1) through a power line (2); the water inlet end of the water pump (3) is connected with the liquid storage tank (13) through a water pipe, and the water outlet end of the water pump is connected with the first port of the four-way joint (5); the second port of the four-way joint is connected with a safety valve (12) through a water pipe, and the safety valve (12) is connected with a liquid storage tank (13) through a water pipe; the third port and the fourth port of the four-way joint are connected with a proportional valve (11) through water pipes, the proportional valve (11) is connected with a controller (6) through a signal transmission line (8), and a vehicle speed sensor (7) is connected with the controller (6); the rear end of the proportional valve (11) is connected with an electromagnetic valve (9), and a universal liquid spraying pipe head (10) at the tail end is connected with the electromagnetic valve (9) through a water pipe. The projection device is simple to operate, the projection track is regulated and controlled in real time along with the vehicle speed, the measurement error is effectively reduced, and the test accuracy is improved.
Description
Technical Field
The utility model relates to an experimental method especially relates to a projection arrangement for vehicle test orbit.
Background
At present, in the whole vehicle performance test of a vehicle or a train, such as the measurement of the trafficability of a right-angle bend of the vehicle, the minimum turning diameter, the round diameter of a turning channel, the outward swing value and the like, the most common and most economical technical method is a water dropping method. Namely, a nozzle is arranged at a proper position of the vehicle, and water in the liquid storage tank is sprayed to the ground by using gravity, a water pump or compressed air during the running process of the vehicle, so that the motion track is depicted. However, the conventional dripping device has the defects of nozzle design, the water flow of a water spraying opening is uncontrollable, sputtering is easily formed, the trajectory is thick, and the accuracy of the test is influenced; meanwhile, water is easy to diffuse and evaporate on the ground, and if the test route is long or the air temperature is high, the water stain is dried before measurement, so that the method is invalid. In the implementation of the trajectory, there is also a method of spraying a liquid mixed with paint, but this method is easy to cause pollution to the test site and is not highly feasible. Traditional water dripping devices are all mechanical opening and closing valves, manual operation of a tester is needed, operation is troublesome, the water dripping devices are not timely opened and closed, and interference on the track of an effective interval of a test can be caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned defect, provide a device and method for the projection of vehicle test orbit. By introducing components such as a water pump, a vehicle speed sensor, a proportional valve, an electromagnetic valve and the like and optimizing the local structure of the liquid spraying end, the aims of controllable flow rate, adjustable track line width, switching on and off as required and simplicity in operation are fulfilled; meanwhile, the wetting effect of water on the ground is reduced by adding the high molecular surfactant, the water trace diffusion is reduced, the water evaporation is delayed, the measurement error is effectively reduced, and the test accuracy is improved.
The technical scheme of the utility model is that a projection arrangement for vehicle test orbit is provided, including power, power cord, water pump, water pipe, four-way connection, controller, speed sensor, signal transmission line, solenoid valve, universal hydrojet tube head, proportional valve, relief valve, liquid storage pot;
the water pump is connected with the power supply through a power line;
the water inlet end of the water pump is connected with the liquid storage tank through a water pipe, and the water outlet end of the water pump is connected with the first port of the four-way joint;
the second port of the four-way joint is connected with the liquid storage tank through a water pipe;
the third port and the fourth port of the four-way joint are connected with a proportional valve through water pipes, the proportional valve is connected with a controller through a signal transmission line, and a vehicle speed sensor is connected with the controller; the rear end of the proportional valve is connected with an electromagnetic valve, and a universal liquid spraying pipe head at the tail end is connected with the electromagnetic valve through a water pipe.
Further, the liquid storage tank is filled with an aqueous solution of polyacrylamide.
Further, the liquid storage tank is filled with a mixed liquid of methyl oleate and water.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the track device is provided with a vehicle speed sensor, a controller, a proportional valve and an electromagnetic valve, wherein the vehicle speed sensor transmits a vehicle speed signal to the controller, the controller transmits a flow opening instruction to the proportional valve, and the proportional valve adjusts the flow opening according to the instruction, so that the flow speed of the sprayed liquid can be adjusted along with different test vehicle speeds, and the line width of the track is further controlled; meanwhile, the remote control electromagnetic valve is opened and closed, namely opened and closed, so that the track projection in an effective interval is ensured, and the interference of the residual mark which is not opened and closed in time on the test is avoided;
2. the liquid dropping end of the track device is designed by adopting a universal liquid spraying pipe head, the universal pipe at the upper section of the track device is easily adjusted to the position of a projection track line required by a test, and the spraying head part adopts a needle tube structure, so that the influence on the track width caused by sputtering during liquid spraying can be effectively avoided;
3. the track device can flexibly expand the number of the liquid spraying ports according to the test requirements, and if the number of the liquid spraying ports is insufficient, the liquid spraying ports can be expanded through the multi-way quick connector to obtain more liquid spraying ports;
4. the special test solvent, such as polyacrylamide water solution and the mixed solution of methyl oleate and water, can effectively solve the problem that pure water is easy to evaporate and diffuse when being used as test liquid to influence the test effect
Drawings
FIG. 1 is a diagram of an automotive test track set.
FIG. 2 is a flow chart of an automotive test trajectory test
The figures show that: the device comprises a power supply 1, a power line 2, a water pump 3, a water pipe 4, a four-way joint 5, a controller 6, a vehicle speed sensor 7, a signal transmission line 8, an electromagnetic valve 9, a universal liquid spraying pipe head 10, a proportional valve 11, a safety valve 12 and a liquid storage tank 13.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present application, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The terms of orientation such as up, down, left, right, front, and rear in the present document are established based on the positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.
The present invention relates to a portable electronic device, and more particularly, to a portable electronic device, which can be connected to a portable electronic device, and can be connected to a portable electronic device through a connection structure, such as a connector, a. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model discloses the vehicle outline, the orbit of traveling at axletree center are drawn in the measurement test of mainly used car or automobile train's vehicle right angle bend trafficability characteristic, minimum turning diameter, turning passageway circle diameter and balance value etc..
As shown in fig. 1, the embodiment provides a projection device for vehicle test tracks, which comprises a power supply 1, a power line 2, a water pump 3, a water pipe 4, a four-way joint 5, a controller 6, a vehicle speed sensor 7, a signal transmission line 8, an electromagnetic valve 9, a universal liquid spraying pipe head 10, a proportional valve 11, a safety valve 12 and a liquid storage tank 13;
the water pump 3 is connected with the power supply 1 through a power line 2;
the water inlet end of the water pump 3 is connected with the liquid storage tank 13 through a water pipe, and the water outlet end of the water pump is connected with the first port of the four-way joint 5;
the second port of the four-way joint is connected with a safety valve 12 through a water pipe, and the other end of the safety valve 12 is connected with a water pipe liquid storage tank 13;
the third port and the fourth port of the four-way joint are connected with a proportional valve 11 through water pipes, the proportional valve 11 is connected with a controller 6 through a signal transmission line 8, and a vehicle speed sensor 7 is connected with the controller 6; the rear end of the proportional valve 11 is connected with the electromagnetic valve 9, and the universal liquid spraying pipe head 10 at the tail end is connected with the electromagnetic valve 9 through a water pipe.
The solvent in the liquid storage tank 13 is preferably polyacrylamide aqueous solution (with the solution concentration of 5-15%) or a mixed solution of methyl oleate and water (diluted by 50-100 times).
The purpose of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
As shown in fig. 2, the embodiment further provides a projection method of a vehicle test trajectory, which specifically includes the following steps:
step 4, opening the electromagnetic valve 9, and starting the universal liquid spraying pipe head 10 to draw a vehicle running track;
and 5, when the vehicle exits the test interval, closing the electromagnetic valve 9, and finishing the drawing of the test track.
If the driving tracks of a plurality of positions of the vehicle are required to be drawn at the same time in the test, the driving tracks can be drawn by connecting the multi-way joint, the proportional valve and the electromagnetic valve in series.
While the principles of the invention have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the above-described embodiments are merely illustrative of exemplary implementations of the invention and are not limiting of the scope of the invention. The details in the embodiments do not constitute the limitations of the scope of the present invention, and any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention all fall within the protection scope of the present invention without departing from the spirit and scope of the present invention.
Claims (2)
1. The utility model provides a projection arrangement for experimental orbit of vehicle, includes power (1), power cord (2), water pump (3), water pipe (4), four-way connection (5), controller (6), speed sensor (7), signal transmission line (8), solenoid valve (9), universal hydrojet tube head (10), proportional valve (11), relief valve (12), liquid storage pot (13), its characterized in that:
the water pump (3) is communicated with the power supply (1) through a power line (2);
the water inlet end of the water pump (3) is connected with the liquid storage tank (13) through a water pipe, and the water outlet end of the water pump is connected with the first port of the four-way joint (5);
the second port of the four-way joint is connected with a safety valve (12) through a water pipe, and the other end of the safety valve (12) is connected with a water storage tank (13) through a water pipe;
the third port and the fourth port of the four-way joint are connected with a proportional valve (11) through water pipes, the proportional valve (11) is connected with a controller (6) through a signal transmission line (8), and a vehicle speed sensor (7) is connected with the controller (6); the rear end of the proportional valve (11) is connected with an electromagnetic valve (9), and a universal liquid spraying pipe head (10) at the tail end is connected with the electromagnetic valve (9) through a water pipe.
2. The projection apparatus for a vehicle test track according to claim 1, characterized in that:
the liquid storage tank (13) is filled with an aqueous solution of polyacrylamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299211.4U CN216826777U (en) | 2021-12-24 | 2021-12-24 | Projection device for vehicle test track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299211.4U CN216826777U (en) | 2021-12-24 | 2021-12-24 | Projection device for vehicle test track |
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| Publication Number | Publication Date |
|---|---|
| CN216826777U true CN216826777U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123299211.4U Active CN216826777U (en) | 2021-12-24 | 2021-12-24 | Projection device for vehicle test track |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907867A (en) * | 2023-06-21 | 2023-10-20 | 中汽研汽车检验中心(武汉)有限公司 | Device for measuring right-angle turning trafficability |
| CN117073583A (en) * | 2023-08-15 | 2023-11-17 | 中汽研汽车检验中心(武汉)有限公司 | Measuring device for measuring maximum width of turning channel |
-
2021
- 2021-12-24 CN CN202123299211.4U patent/CN216826777U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907867A (en) * | 2023-06-21 | 2023-10-20 | 中汽研汽车检验中心(武汉)有限公司 | Device for measuring right-angle turning trafficability |
| CN117073583A (en) * | 2023-08-15 | 2023-11-17 | 中汽研汽车检验中心(武汉)有限公司 | Measuring device for measuring maximum width of turning channel |
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