Testing device for active air-inlet grille

Abstract

The utility model discloses a testing device for an active air-inlet grille. The testing device comprises a fixed rack, a first traction structure and a second traction structure, the fixing rack is used for fixing the grating frame; one end of the first traction structure is connected with the fixed rack, and the other end of the first traction structure is connected with the front ends of the grating blades and used for providing first traction force for the grating blades; one end of the second traction structure is connected with the fixed rack, the other end of the first traction structure is connected with the rear ends of the grating blades, the second traction structure is used for providing second traction force for the grating blades, and the direction of the second traction force is opposite to that of the first traction force; the resultant force of the first traction force and the second traction force is adjustable. According to the testing device of the active air inlet grille, the wind pressure magnitude of grille blades and the wind pressure variation when the grille blades are opened and closed can be simulated, so that wind pressure simulation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of active air intake grille testing, in particular to a testing device for an active air intake grille. Background Art

[0002] The active air intake grille is an automotive component, generally including a grille frame, a grille shaft, grille blades and a drive motor. The drive motor is arranged on the grille frame, and the grille blades are connected to the drive motor through the grille shaft. When the drive motor is working, it can drive the grille shaft to rotate, and then drive the grille blades to rotate, so as to realize the active air intake function. The load opening and closing durability of the active air intake grille is a key performance indicator of the component. Since the grille blades need to open and close under the action of wind pressure for a long time, it is necessary to determine through experiments whether the durability reliability of the mechanical structure opening and closing system of the active air intake grille under wind pressure will be abnormal. Therefore, when conducting load opening and closing durability performance tests on the active air intake grille, it is very important to establish a reasonable test device that is closest to the actual use conditions of the product. However, the existing test device for the active air intake grille is difficult to simulate the wind pressure at a certain driving speed and the change in wind pressure when the grille blades are opened and closed. Utility Model Content

[0003] The embodiment of the utility model provides a testing device for an active air intake grille, so as to solve the problems of complex wind pressure fitting calculation and poor fitting effect of the existing testing device for the active air intake grille.

[0004] The utility model embodiment provides a testing device for an active air intake grille, wherein the active air intake grille comprises a grille frame, a grille rotating shaft, grille blades and a driving motor, wherein the driving motor is arranged on the grille frame, and the grille blades are connected to the driving motor through the grille rotating shaft, and the testing device comprises a fixed stand, a first traction structure and a second traction structure;

[0005] The fixed stand is used to fix the grid frame;

[0006] One end of the first traction structure is connected to the fixed stand, and the other end of the first traction structure is connected to the front end of the grille blade, so as to provide a first traction force to the grille blade;

[0007] One end of the second traction structure is connected to the fixed stand, and the other end of the first traction structure is connected to the rear end of the grille blade, and is used to provide a second traction force to the grille blade, and the second traction force is opposite to the first traction force;

[0008] The combined force of the first traction force and the second traction force is adjustable.

[0009] Preferably, when the grille blade is in the first test posture, the resultant force of the first traction force and the second traction force is smaller than the resultant force of the first traction force and the second traction force when the grille blade is in the second test posture; the blade opening of the grille blade in the first test posture is smaller than the blade opening of the grille blade in the second test posture.

[0010] Preferably, a value of the first traction force when the grating blade is in the first test posture is smaller than a value of the first traction force when the grating blade is in the second test posture.

[0011] Preferably, the first traction structure comprises a spring;

[0012] One end of the spring is connected to the fixed stand, and the other end of the spring is connected to the front end of the grille blade, so as to provide a first traction force to the grille blade.

[0013] Preferably, when the first test posture is a closed state of the grille vanes, the first traction force is 0.

[0014] Preferably, the second traction structure comprises a traction rope, a pulley block and a counterweight;

[0015] The pulley block is arranged on the fixed platform, the traction rope is wound around the pulley block, the first end of the traction rope is connected to the rear end of the grille blade, and the second end of the traction rope is connected to the counterweight block for providing a second traction force to the grille blade.

[0016] Preferably, the pulley block comprises a bracket and a pulley;

[0017] The bracket is installed on the fixed stand, and the pulley is rotatably connected to the bracket;

[0018] The traction rope is wound around the pulley.

[0019] Preferably, the traction rope is a steel wire rope.

[0020] Preferably, the counterweight comprises a weight.

[0021] Preferably, the fixed stand comprises a first connecting portion arranged in a vertical direction, a first fixing portion and a second fixing portion extending horizontally from both ends of the first connecting portion, and a second connecting portion extending in a vertical direction from one end of the second fixing portion;

[0022] The first fixing portion and the second fixing portion are used to fix the grid frame;

[0023] One end of the first traction structure is connected to the first connection portion, and the other end of the first traction structure is connected to the front end of the grille blade;

[0024] One end of the second traction structure is connected to the rear end of the grille blade, and the other end of the second traction structure is connected to the second connection portion.

[0025] Preferably, the length of the first connecting portion is greater than the length of the second connecting portion;

[0026] The length of the first fixing portion is smaller than the length of the second fixing portion.

[0027] Preferably, the bracket is installed on a side of a top end of the second connecting portion away from the first connecting portion.

[0028] Preferably, a connection point between the first traction structure and the front end of the grille vane is located in front of a connection point between the second traction structure and the rear end of the grille vane.

[0029] The testing device for the active air intake grille provided in the embodiment of the utility model can simulate the wind pressure of the grille blades at a certain driving speed and the wind pressure change when the grille blades are opened and closed through an adjustable first traction force and a second traction force, thereby making the wind pressure simulation simpler and more convenient and more adaptable to actual testing conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a structural schematic diagram of a testing device for an active air intake grille in one embodiment of the utility model.

[0032] In the figure: 1. grille frame; 2. grille rotating shaft; 3. grille blades; 4. fixed stand; 41. first connecting part; 42. first fixing part; 43. second fixing part; 44. second connecting part; 5. first traction structure; 6. second traction structure; 61. traction rope; 62. pulley block; 63. counterweight block. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The embodiment of the utility model also provides a testing device for an active air intake grille, which includes a grille frame 1, a grille rotating shaft 2, grille blades 3 and a driving motor, wherein the driving motor is arranged on the grille frame 1, and the grille blades 3 are connected to the driving motor through the grille rotating shaft 2. The testing device includes a fixed stand 4, a first traction structure 5 and a second traction structure 6; the fixed stand 4 is used to fix the grille frame 1; one end of the first traction structure 5 is connected to the fixed stand 4, and the other end of the first traction structure 5 is connected to the front end of the grille blades 3, so as to provide a first traction force F1 to the grille blades 3; one end of the second traction structure 6 is connected to the fixed stand 4, and the other end of the first traction structure 5 is connected to the rear end of the grille blades 3, so as to provide a second traction force F2 to the grille blades 3, and the second traction force F2 is in opposite directions to the first traction force F1; the combined force of the first traction force and the second traction force is adjustable.

[0037] Among them, the active air intake grille can be set at the front end of the car. By adjusting the opening and closing degree of the grille blades 3, the air intake volume and the wind resistance of the car can be controlled, so that the engine can quickly reach the optimal operating temperature and improve fuel economy. The active air intake grille includes a grille frame 1, a grille shaft 2, grille blades 3 and a drive motor. The drive motor is set on the grille frame 1. The grille blades 3 are connected to the output shaft of the drive motor through the grille shaft 2. When the drive motor is working, it can drive the grille shaft 2 to rotate, and then drive the grille blades 2 to rotate to realize the active air intake function. The front end of the grille blades 3 is the front end of the car, which is the windward side and bears wind pressure during the driving process of the car.

[0038] As an example, the test device of the active air intake grille includes a fixed stand 4, a first traction structure 5 and a second traction structure 6. The fixed stand 4 is used to fix the grille frame 1; one end of the first traction structure 5 is connected to the fixed stand 4, and the other end of the first traction structure 5 is connected to the front end of the grille blade 3, and is used to provide the grille blade 3 with a first traction force F1; one end of the second traction structure 6 is connected to the fixed stand 4, and the other end of the first traction structure 5 is connected to the rear end of the grille blade 3, and is used to provide the grille blade 3 with a second traction force F2, and the second traction force F2 is opposite to the first traction force F1.

[0039] According to the embodiment of the present application, the first traction force F1 and the second traction force F2 are adjustable to simulate the wind pressure of the grille blades 3 at a certain driving speed and the wind pressure change when the grille blades 3 are opened and closed, making the wind pressure simulation simpler, more convenient and more adaptable to actual test conditions.

[0040] In one embodiment, when the grille blade 3 is in the first test posture, the resultant force of the first traction force F1 and the second traction force F2 is less than the resultant force of the first traction force F1 and the second traction force F2 when the grille blade 3 is in the second test posture; the blade opening of the grille blade 3 in the first test posture is less than the blade opening of the grille blade 3 in the second test posture. During the test, the driving motor drives the grille blade 3 through the grille rotating shaft 2 to cyclically perform the action of rotating from the first test posture to the second test posture and then back to the first test posture, such as continuously cyclically rotating from the closed state of the grille blade 3 to the open state of the grille blade 3 and then back to the closed state of the grille blade 3. During the rotation process of the grille blade 3, the front end of the grille blade 3 is subjected to the forward first traction force F1 applied by the first traction structure 5, and the rear end of the grille blade 3 is subjected to the backward second traction force F2 applied by the second traction structure 6. The resultant force F0 formed by the first traction force F1 and the second traction force F2 is equal to F2-F1. By setting the resultant force of the first traction force F1 and the second traction force F2 when the grille blade 3 is in the first test posture to be smaller than the resultant force of the first traction force F1 and the second traction force F2 when the grille blade 3 is in the second test posture, the wind pressure borne by the grille blade 3 during the rotation process can be simulated, and the wind pressure changes with the opening and closing position of the grille blade 3. In this example, the test device of the active air intake grille can flexibly adjust the first traction force F1 at the front end of the grille blade 3 and / or the second traction force F2 at the rear end of the grille blade 3 according to specific circumstances, simulate the magnitude of the wind pressure borne by the grille blade 3 at a certain driving speed and the amount of wind pressure change when the grille blade 3 is opened and closed, provide different adjustment options, simplify the calculation process, make the wind pressure simulation simpler and more convenient, and better adapt to actual test conditions.

[0041] In one embodiment, when the grille blades 3 are in the first test posture, the value of the first traction force F1 is less than the value of the first traction force F1 when the grille blades 3 are in the second test posture. By adjusting the value of the first traction force F1, the combined force of the first traction force F1 and the second traction force F2 can be easily adjusted, thereby simulating that the wind pressure changes with the opening and closing positions of the grille blades 3.

[0042] In one embodiment, the first traction structure 5 includes a spring; one end of the spring is connected to the fixed stand 4 , and the other end of the spring is connected to the front end of the grille blade 3 , for providing the first traction force F1 to the grille blade 3 .

[0043] Among them, the spring can change from a free state to a stretched state during the test. Therefore, the selection of the stiffness K of the spring in this example is related to the first traction force F1 and the pulling length of the spring when the grille blade 3 rotates from the first test posture to the second test posture. The specific calculation formula is K=F1 / X, where K is the stiffness of the spring, and X is the pulling length of the spring when the grille blade 3 rotates from the first test posture to the second test posture. The first test posture and the second test posture are the postures formed after the grille blade 3 rotates. The wind pressure received by the grille blade 3 is different for different test postures. In this example, the first test posture can be the posture when the grille blade 3 is in a closed state, at which time the wind pressure on the grille blade 3 is the strongest, and the second test posture can be the posture when the grille blade 3 is in an open state, at which time the wind pressure on the grille blade 3 is the weakest.

[0044] As an example, the first traction structure 5 includes a spring. One end of the spring is connected to the fixed stand 4, and the other end of the spring is connected to the front end of the grille blade 3. During the test, when the first test posture is the closed state of the grille blade 3, the spring is in a free state, the first traction force F1 on the grille blade 3 is 0, and the grille blade 3 is only subjected to the second backward traction force F2, so as to simulate the state when the grille blade 3 is subjected to the maximum wind pressure in the first test posture; when the grille blade 3 rotates from the first test posture to the second test posture, the spring is stretched, and the traction force on the grille blade 3 is linearly increased from 0 to the first traction force F1 (at this time, F1 is greater than 0), and the resultant force F0 of the first traction force F1 and the second traction force F2 on the grille blade 3 is linearly reduced from F2 to the magnitude of F2-F1, so as to simulate the wind pressure when the grille blade 3 changes from the first test posture to the second test posture. When selecting the spring, the wind pressure borne by the grille blade 3 in the first test posture and the second test posture at the speed can be obtained first, and the change in wind pressure of the grille blade 3 from the first test posture to the second test posture, that is, the first traction force F1, can be determined. The pulling length X of the grille blade 3 on the spring from the first test posture to the second test posture can be determined, and the stiffness K of the spring can be selected according to the formula K=F1 / X. In this example, the first traction force F1 on the grille blade 3 is formed by spring pulling. By selecting and adjusting the stiffness K of the spring, the change in wind pressure of the grille blade 3 from the first test posture to the second test posture can be simulated, which simplifies the calculation process and makes the wind pressure simulation closer to the actual situation.

[0045] In one embodiment, the second traction structure 6 includes a traction rope 61, a pulley block 62 and a counterweight block 63; the pulley block 62 is arranged on the fixed platform 4, the traction rope 61 is wound around the pulley block 62, the first end of the traction rope 61 is connected to the rear end of the grille blade 3, and the second end of the traction rope 61 is connected to the counterweight block 63, which is used to provide a second traction force F2 to the grille blade 3.

[0046] As an example, the second traction structure 6 includes a traction rope 61, a pulley block 62 and a counterweight block 63. The pulley block 62 is arranged on the fixed stand 4, the traction rope 61 is wound around the pulley block 62, the first end of the traction rope 61 is connected to the rear end of the grille blade 3, and the second end of the traction rope 61 is connected to the counterweight block 63. During the test, the counterweight block 63 naturally hangs down, cooperates with the pulley block 62, and uses its own gravity as the source of the second traction force F2. By changing the weight of the counterweight block 63, the magnitude of the second traction force F2 can be adjusted to simulate the magnitude of the wind pressure to which the grille blade 3 is subjected when in the first test posture, so that the wind pressure simulation is closer to the actual situation.

[0047] In one embodiment, the pulley block 62 includes a bracket and a pulley; the bracket is mounted on the fixed stand 4, and the pulley is rotatably connected to the bracket; the traction rope 61 is wound around the pulley.

[0048] As an example, the pulley assembly 62 includes a bracket and a pulley. The bracket is mounted on the fixed platform 4, the pulley is rotatably connected to the bracket, and the traction rope 61 is wound around the pulley. Figure 1 As shown, in this example, a single pulley and a bracket are used to form a pulley group 62, and the gravity of the counterweight 63 is equal to the second traction force F2. The configuration of this pulley group 62 is simple and easy to obtain. No additional calculation is required when adjusting the second traction force F2 by adjusting the counterweight 63, and the adjustment is more intuitive and simple. In another example, multiple pulleys can be used according to actual application conditions, such as two pulleys, which are rotatably connected to the bracket to form a pulley group 62. The traction rope is wound around the two pulleys, and the counterweight 63 naturally hangs down under the action of gravity. By performing force analysis on the two pulleys and the counterweight 63, the size of the second traction force F2 can be obtained according to the gravity of the counterweight 63.

[0049] In one embodiment, the traction rope 61 is a steel wire rope.

[0050] As an example, the traction rope 61 can be a steel wire rope, which has high strength, is not easily abraded, and can better transmit the force applied by the counterweight block 63.

[0051] In one embodiment, the counterweight 63 includes a weight.

[0052] As an example, the counterweight block 63 can be in the form of a combination of multiple weights, and the counterweight is precisely controllable and easy to adjust.

[0053] In one embodiment, the fixed stand 4 includes a first connecting portion 41 arranged in the vertical direction, a first fixing portion 42 and a second fixing portion 43 extending horizontally from both ends of the first connecting portion 41, and a second connecting portion 44 extending in the vertical direction from one end of the second fixing portion 43; the first fixing portion 42 and the second fixing portion 43 are used to fix the grille frame 1; one end of the first traction structure 5 is connected to the first connecting portion 41, and the other end of the first traction structure 5 is connected to the front end of the grille blade 3; one end of the second traction structure 6 is connected to the rear end of the grille blade 3, and the other end of the second traction structure 6 is connected to the second connecting portion 44.

[0054] As an example, Figure 1 As shown, the fixed stand 4 includes a first connecting portion 41 arranged in the vertical direction, a first fixing portion 42 and a second fixing portion 43 extending horizontally from both ends of the first fixing portion 41, and a second connecting portion 44 extending in the vertical direction from one end of the second fixing portion 43, that is, the first fixing portion 42 and the second fixing portion 43 are parallel to each other, and the first connecting portion 41 and the second connecting portion 44 are parallel to each other. The grille frame 1 is vertically fixed between the first fixing portion 42 and the second fixing portion 43; one end of the first traction structure 5 is connected to the first connecting portion 41, and the other end of the first traction structure 5 is connected to the front end of the grille blade 3; one end of the second traction structure 6 is connected to the rear end of the grille blade 3, and the other end of the second traction structure 6 is connected to the second connecting portion 44. In this example, the frame structure composed of the first fixing portion 42, the second fixing portion 43, the first connecting portion 41 and the second connecting portion 44 can stably fix the active air intake grille to be tested, and it is also convenient to replace and adjust the first traction structure 5 and the second traction structure 6 connected inside the fixed stand 4, so that the test adjustment is more convenient and intuitive.

[0055] In one embodiment, the length of the first connecting portion 41 is greater than the length of the second connecting portion 44 ; the length of the first fixing portion 42 is less than the length of the second fixing portion 43 .

[0056] As an example, the length of the first connecting portion 41 is greater than the length of the second connecting portion 44, and the length of the first fixing portion 42 is less than the length of the second fixing portion 43, so that the fixed frame 4 as a whole can form a semi-enclosed frame structure to facilitate the installation and placement of the active air intake grille, and further facilitate the replacement and adjustment of the first traction structure 5 and the second traction structure 6 connected inside the fixed frame 4.

[0057] In one embodiment, the bracket is installed on a side of the top end of the second connection portion 44 away from the first connection portion 41 .

[0058] As an example, the bracket in the pulley block 62 is installed on the side of the top of the second connecting part 44 away from the first connecting part 41, so that the pulley is set at the edge of the top of the second connecting part 44, and the counterweight block 63 suspended on one side of the pulley block 62 can naturally hang down under the action of gravity.

[0059] In one embodiment, the connection point between the first traction structure 5 and the front end of the grille vane 3 is located in front of the connection point between the second traction structure 6 and the rear end of the grille vane 3 .

[0060] As an example, the connection point between the first traction structure 5 and the front end of the grille blade 3 is located in front of the connection point between the second traction structure 6 and the rear end of the grille blade 3, so that the force points at the front end and the rear end of the grille blade 3 can correspond to each other, so that the grille blade 3 is evenly stressed, and the resultant force F0 formed by the first traction force F1 and the second traction force F2 will not be affected by the different lengths of the force arms of the first traction force F1 and the second traction force F2, making the resultant force F0 formed by the first traction force F1 and the second traction force F2 easier to calculate.

[0061] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A test device for an active air intake grille, the active air intake grille comprising a grille frame, a grille shaft, grille blades and a drive motor, the drive motor being arranged on the grille frame, the grille blades being connected to the drive motor via the grille shaft, characterized in that: The testing device comprises a fixed stand, a first traction structure and a second traction structure; The fixed stand is used to fix the grid frame; One end of the first traction structure is connected to the fixed stand, and the other end of the first traction structure is connected to the front end of the grille blade, so as to provide a first traction force to the grille blade; One end of the second traction structure is connected to the fixed stand, and the other end of the second traction structure is connected to the rear end of the grille blade, and is used to provide a second traction force to the grille blade, and the second traction force is opposite to the first traction force; The combined force of the first traction force and the second traction force is adjustable.

2. The active air intake grille testing device according to claim 1, characterized in that: When the grille blade is in the first test posture, the resultant force of the first traction force and the second traction force is less than the resultant force of the first traction force and the second traction force when the grille blade is in the second test posture; The vane opening degree of the grille vanes in the first test posture is smaller than the vane opening degree of the grille vanes in the second test posture.

3. The active air intake grille testing device according to claim 2, characterized in that: When the grille blade is in the first test posture, the value of the first traction force is smaller than the value of the first traction force when the grille blade is in the second test posture.

4. The active air intake grille testing device according to claim 1, characterized in that: The first traction structure includes a spring; One end of the spring is connected to the fixed stand, and the other end of the spring is connected to the front end of the grille blade, so as to provide a first traction force to the grille blade.

5. The active air intake grille testing device according to claim 2, characterized in that: When the first test posture is a grille vane closed state, the first traction force is 0.

6. The active air intake grille testing device according to claim 1, characterized in that: The second traction structure includes a traction rope, a pulley block and a counterweight; The pulley block is arranged on the fixed platform, the traction rope is wound around the pulley block, the first end of the traction rope is connected to the rear end of the grille blade, and the second end of the traction rope is connected to the counterweight block for providing a second traction force to the grille blade.

7. The active air intake grille testing device according to claim 6, characterized in that: The pulley block comprises a bracket and a pulley; The bracket is installed on the fixed stand, and the pulley is rotatably connected to the bracket; The traction rope is wound around the pulley.

8. The active air intake grille testing device according to claim 6, characterized in that: The traction rope is a steel wire rope.

9. The active air intake grille testing device according to claim 6, characterized in that: The counterweight includes a weight.

10. The active air intake grille testing device according to claim 1, characterized in that: The fixed stand comprises a first connecting portion arranged in a vertical direction, a first fixing portion and a second fixing portion extending horizontally from both ends of the first connecting portion, and a second connecting portion extending in a vertical direction from one end of the second fixing portion; The first fixing portion and the second fixing portion are used to fix the grid frame; One end of the first traction structure is connected to the first connection portion, and the other end of the first traction structure is connected to the front end of the grille blade; One end of the second traction structure is connected to the rear end of the grille blade, and the other end of the second traction structure is connected to the second connection portion.

11. The active air intake grille testing device according to claim 10, characterized in that: The length of the first connecting portion is greater than the length of the second connecting portion; The length of the first fixing portion is smaller than the length of the second fixing portion.

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