Braking performance testing device

Abstract

The utility model relates to the field of brake performance testing, and discloses a brake performance testing device, comprising a frame, a brake system is arranged on the top of the frame, the brake system comprises a rotating shaft, a flywheel is installed at one end of the rotating shaft, and a test shaft is connected to the other end; a brake sleeve is arranged on the test shaft, and a product fixing block is arranged on one side of the brake sleeve; a driving mechanism for driving the rotating shaft to rotate is arranged inside the frame; the rotating shaft is driven by the driving mechanism, and the flywheel is driven by the rotating shaft to rotate to simulate the acceleration generated when the car is driving, and after the flywheel generates appropriate acceleration, the driving mechanism of the rotating shaft is disconnected, and the friction action between the brake body and the brake pad is activated again until the car is stopped; the device can completely simulate the use scenario of the brake system, which is more convincing for the test of the brake system, and the obtained test data has higher accuracy.

Description

Technical Field

[0001] The utility model relates to the field of brake performance testing, in particular to a brake performance testing device. Background Art

[0002] In modern society, the safety of vehicles has always been the focus of people's attention, and braking performance is one of the key factors to ensure safety; with the widespread use of various vehicles such as cars and motorcycles and the continuous increase in traffic flow, the reliability and effectiveness of the braking system are particularly important; the quality of braking performance is directly related to whether the vehicle can slow down or stop in time and effectively during driving to avoid collision accidents. In this context, braking performance testing came into being; through professional testing, we can fully and accurately understand the performance of the braking system under different conditions.

[0003] In the existing brake performance testing technology, the brake pads and brake pads are usually fixed, and then the brake pads are driven to rotate by a motor so that the brake pads rub against them; this test method uses hard friction, which will accelerate the shortening of the service life of the brake pads and brake pads, which is inconsistent with the actual use environment, and will cause the final test results to have a large deviation from actual use. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a brake performance testing device, which uses a driving mechanism to give a rotating shaft an initial speed, so that it drives a flywheel to simulate the acceleration generated when a car is driving. After the flywheel generates a suitable acceleration, the driving mechanism of the rotating shaft is disconnected by cooperating with the brake body, and after it is allowed to rotate freely, the friction action between the brake body and the brake pad is activated to finally stop the car.

[0005] Use the motor to give the shaft an initial speed, let it drive the flywheel to simulate the acceleration generated when the car is driving, and use the magnetic powder brake to disconnect the motor after the motor drives the flywheel to generate a suitable acceleration. After letting it rotate freely, activate the brake system to stop it, and repeat the above steps.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A braking performance testing device comprises a frame, a brake system is arranged on the top of the frame, the brake system comprises a rotating shaft arranged on the top of the frame, a flywheel is installed on one end of the rotating shaft, and a test shaft is connected to the other end through a brake body; a brake disc for mounting a brake pad is arranged on the test shaft, and a product fixing block for mounting a brake body is arranged on one side of the brake disc; a driving mechanism for driving the rotating shaft to rotate is arranged inside the frame, and a force application system for pulling the brake line of the brake body to stop the flywheel is also arranged inside the frame.

[0008] Optionally, the force application system includes a base plate fixedly mounted inside the frame, the base plate being provided with a weight receiving plate that can be raised and lowered for receiving the weight body, a weight hanging rod being fixedly mounted at the center position of the weight receiving plate, and the end of the brake line being connected to the top of the weight hanging rod.

[0009] Optionally, the base plate is fixedly mounted inside the frame via a plurality of support columns, the support columns are perpendicular to the base plate, and a telescopic component is installed at the bottom of the base plate, and an output end of the telescopic component passes through the base plate and is connected to the weight receiving plate.

[0010] Optionally, the driving mechanism includes a driving motor, a driving sprocket, a driven sprocket and a chain, the driving motor is installed inside the frame, the driving sprocket is installed on the output end of the driving motor, the driven sprocket is installed on the rotating shaft, and the driving sprocket and the driven sprocket are connected by a chain.

[0011] Optionally, a hub fixing plate is installed at one end of the test shaft opposite to the brake body.

[0012] Optionally, a fixed pulley for the brake line to pass through is provided on one side of the product fixing block, and the fixed pulley is installed on the top of the frame.

[0013] Optionally, a stand is provided on one side of the frame, the flywheel is arranged inside the stand, and one end of the rotating shaft passes through the side wall of the stand and is connected to the flywheel.

[0014] Optionally, the rotating shaft and the testing shaft are both rotatably connected to the frame via seat bearings.

[0015] Beneficial Effects

[0016] (1) The rotating shaft in the utility model is driven by a driving mechanism to obtain an initial speed, and the rotating shaft drives the flywheel to rotate to simulate the acceleration generated when the car is running. After the flywheel generates a suitable acceleration, the driving mechanism of the rotating shaft is disconnected to allow the flywheel to rotate freely, and then the friction between the brake body and the brake pad is activated by the force application system until it is stopped. The device can completely simulate the use scenario of the brake system, which is more convincing for the test of the brake system, and the test data obtained has higher accuracy.

[0017] (2) The force-applying system in the utility model includes a weight receiving plate that can be raised and lowered. When the weight body supported by the weight receiving plate descends, the brake line can be pulled by the weight hanging rod to enable the brake body to brake. The structure is ingenious, and the pulling force of the brake line can be controlled by placing different numbers of weights, thereby realizing the braking performance test under different forces.

[0018] (3) The driving mechanism for driving the rotating shaft in the utility model adopts the form of chain transmission. Compared with belt transmission, it has no elastic sliding and slipping phenomenon, accurate average transmission ratio, reliable operation, high efficiency, large transmission power and strong overload capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0021] Figure 3 It is a structural schematic diagram of the brake system of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the force application system of the utility model;

[0023] Among them, 1. rack; 2. stand; 3. control box;

[0024] 4. Braking system; 41. Rotating shaft; 42. Test shaft; 43. Brake body; 44. Flywheel; 45. Brake sleeve; 46. Product fixing block; 47. Hub fixing plate; 48. Fixed pulley; 49. Driving mechanism; 491. Driving motor; 492. Driving sprocket; 493. Driven sprocket; 494. Chain;

[0025] 5. Force application system; 501. Bottom plate; 502. Support column; 503. Telescopic assembly; 504. Weight receiving plate; 505. Weight hanging rod; 506. Weight body;

[0026] 6. Brake pad; 7. Brake body. DETAILED DESCRIPTION

[0027] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 2 As shown, a brake performance testing device includes a frame 1, a test bench 2, a control box 3, a brake system 4 and a force application system 5; the test bench 2 is arranged on one side of the frame 1, the control box 3 is arranged on one side of the brake system 4, the brake system 4 is arranged on the top of the frame 1, and one end of the brake system 4 extends into the test bench 2; the force application system 5 is arranged inside the frame 1, and is connected to the brake system 4 through a brake line.

[0030] Among them, the brake system 4 is used to detect the braking performance of the matching brake pads 6 and the brake body 7 (i.e., the disc brake seat), the control box 3 is used to control and adjust the working progress and corresponding parameters of the device, and the force application system 5 is used to drive the brake system 4 to perform braking action.

[0031] like Figure 1-Figure 3 As shown, the brake system 4 includes a rotating shaft 41, a test shaft 42, a brake body 43, a flywheel 44, a brake disc 45, a product fixing block 46 and a driving mechanism 49 for driving the rotating shaft 41 to rotate; the rotating shaft 41 and the test shaft 42 are both arranged on the top of the frame 1, and the two are connected through the brake body 43, and the rotating shaft 41 and the test shaft 42 are both rotatably connected to the frame 1 through a seat bearing; the flywheel 44 is installed on the end of the rotating shaft 41 opposite to the brake body 43 through a connecting sleeve, and a wheel hub fixing disk 47 is installed on the end of the test shaft 42 opposite to the brake body 43; the brake disc 45 for installing the brake pad 6 is installed on the test shaft 42, and the product fixing block 46 for installing the brake body 7 is arranged on one side of the brake disc 45, and the product fixing block 46 is fixedly connected to the frame 1.

[0032] As mentioned above, the brake body 43 preferably adopts a magnetic powder brake, whose function is to realize the on-off connection between the rotating shaft 41 and the test shaft 42. A groove for positioning is opened on one side of the product fixing block 46, and a threaded hole is opened on the outside of the groove. After the brake body 7 is placed in the groove, the brake body 7 can be fixed and installed on the product fixing block 46 by means of threaded connection using fasteners such as bolts or other existing fixing methods.

[0033] The brake body 7 here can be a disc brake seat, which realizes the braking action by pulling the brake line. Based on this, the function of the force application system 5 arranged inside the frame 1 is to pull the brake line of the brake body 7 to stop the flywheel 44.

[0034] Among them, the flywheel 44 is arranged inside the test stand 2, and one end of the rotating shaft 41 passes through the side wall of the test stand 2 and is connected to the flywheel 44; the test stand 2 can ensure that the overall structure of the device has a certain aesthetics, and the flywheel 44 needs to rotate at a high speed during testing. Placing it inside the test stand 2 can avoid accidental injury to the staff.

[0035] Furthermore, a fixed pulley 48 for the brake line to pass through is provided on one side of the product fixing block 46, and the fixed pulley 48 is installed on the top of the frame 1. There are multiple fixed pulleys 48, which can rotate around their own axes, and a limiting groove is provided on the outer circumferential surface of the fixed pulley 48 so that the brake line can pass through it without falling off at will; the direction of the brake line winding can be changed through the fixed pulley 48, so that the end of the brake line can be connected to the force application system 5 in the most suitable way.

[0036] In addition, the driving mechanism 49 includes a driving motor 491, a driving sprocket 492, a driven sprocket 493 and a chain 494. The driving motor 491 is installed inside the frame 1, the driving sprocket 492 is installed at the output end of the driving motor 491, the driven sprocket 493 is installed on the rotating shaft 41, and the driving sprocket 492 and the driven sprocket 493 are connected by a chain 494.

[0037] A through hole is provided on the top of the frame 1, and the chain 494 passes through the through hole to connect the driving sprocket 492 and the driven sprocket 493 together; that is, the two ends of the chain 494 are respectively mounted on the driving sprocket 492 and the driven sprocket 493. When the output end of the driving motor 491 drives the driving sprocket 492 to rotate, the torque of the driving sprocket 492 can be transmitted to the driven sprocket 493 through the chain 494, and then the driven sprocket 493 drives the rotating shaft 41 to rotate.

[0038] Specifically, the driving mechanism 49 for driving the rotating shaft 41 to rotate adopts a chain drive. Compared with a belt drive, it has no elastic sliding and slipping, accurate average transmission ratio, reliable operation, high efficiency, large transmission power, and strong overload capacity.

[0039] Working principle:

[0040] Fix the brake pad 6 to the brake disc 45, fix the brake body 7 (i.e., the disc brake seat) to the product fixing block 46, and fix the brake line to the force application system 5 through the fixed pulley 48; after starting the test, the brake body 43 works, and the driving motor 491 drives the rotating shaft 41 to rotate through the chain 494 and the driven sprocket 493. After the flywheel 44 obtains a certain acceleration, the brake body 43 stops working, the driving motor 491 is disconnected from the flywheel 44, the force application system 5 works, and the disc brake seat works through the brake line. After the flywheel 44 is stopped, the test is repeated.

[0041] Embodiment 2

[0042] On the basis of the first embodiment, the present invention further proposes a specific structure of a force application system 5 for pulling the brake line of the brake body 7 to stop the flywheel 44 .

[0043] like Figure 1 , Figure 4 As shown, the force application system 5 includes a base plate 501 fixedly installed inside the frame 1, and a weight receiving plate 504 that can be raised and lowered for receiving a weight body 506 is provided on the base plate 501. A weight hanging rod 505 is fixedly installed at the center position of the weight receiving plate 504, and the end of the brake line is connected to the top of the weight hanging rod 505.

[0044] Through the weight receiving plate 504 that can be raised and lowered, when the weight body 506 it receives descends, the brake line can be pulled through the weight hanging rod 505 to make the brake body 7 perform a braking action. Its structure is ingenious, and the pulling force of the brake line can be controlled by placing different numbers of weight bodies 506, thereby realizing braking performance testing under different forces; that is, before the test, the weight receiving plate 504 receives the weight body 506 and is located in a high position. During the test, the weight receiving plate 504, the weight body 506 and the weight hanging rod 505 descend to a low position to pull the brake line to perform a braking action.

[0045] The weight hanging rod 505 is used to connect the brake line and also to limit the weight body 506 on the weight receiving plate 504 .

[0046] Furthermore, the base plate 501 is fixedly installed inside the frame 1 through multiple support columns 502, the support columns 502 are perpendicular to the base plate 501, and a telescopic component 503 is installed at the bottom of the base plate 501, and the output end of the telescopic component 503 passes through the base plate 501 and is connected to the weight receiving plate 504.

[0047] The support column 502 is located below the base plate 501, that is, the support column 502 is fixedly connected to the inside of the frame 1, which can provide installation space for the telescopic component 503. The telescopic component 503 preferably uses a cylinder. When its output end is extended, the weight receiving plate 504 is located at a high position. When its output end is contracted, the weight receiving plate 504 is located at a low position. Through this structure, the situation of the driver stepping on the brake pedal in actual circumstances can be more realistically simulated, so that the data measured by the device is more accurate.

[0048] In summary, the utility model uses a motor to give the rotating shaft 41 an initial speed, allowing it to drive the flywheel 44 to simulate the acceleration generated when the car is driving, and cooperates with the magnetic powder brake to disconnect the motor after the motor drives the flywheel 44 to generate a suitable acceleration, allowing it to rotate freely and then activating the brake system 4 to stop it, repeating the above steps to perform multiple braking performance tests; compared with the existing braking performance testing technology, the device can completely simulate the use scenario of the brake, is more convincing for the braking performance test, and the test data has higher accuracy.

[0049] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "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 accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0050] 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 an indirect connection 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 by specific circumstances.

[0051] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A braking performance testing device, characterized in that: The machine comprises a frame (1), wherein a brake system (4) is arranged on the top of the frame (1), wherein the brake system (4) comprises a rotating shaft (41) arranged on the top of the frame (1), wherein a flywheel (44) is mounted on one end of the rotating shaft (41), and the other end of the rotating shaft (41) is connected to a test shaft (42) via a brake body (43); The test shaft (42) is provided with a brake disc (45) for mounting a brake pad (6), and one side of the brake disc (45) is provided with a product fixing block (46) for mounting a brake body (7); A driving mechanism (49) for driving the rotating shaft (41) to rotate is disposed inside the frame (1), and a force application system (5) for pulling a brake line of the brake body (7) to stop the flywheel (44) is also disposed inside the frame (1).

2. The brake performance testing device according to claim 1, characterized in that: The force application system (5) comprises a bottom plate (501) fixedly mounted inside the frame (1); a weight receiving plate (504) capable of being raised and lowered and used to receive a weight body (506) is disposed on the bottom plate (501); a weight hanging rod (505) is fixedly mounted at the center of the weight receiving plate (504); and an end of the brake line is connected to the top of the weight hanging rod (505).

3. The brake performance testing device according to claim 2, characterized in that: The bottom plate (501) is fixedly mounted inside the frame (1) via a plurality of support columns (502), the support columns (502) being perpendicular to the bottom plate (501), and a telescopic component (503) is mounted at the bottom of the bottom plate (501), the output end of the telescopic component (503) passing through the bottom plate (501) and connected to the weight receiving plate (504).

4. The brake performance testing device according to claim 1, characterized in that: The driving mechanism (49) comprises a driving motor (491), a driving sprocket (492), a driven sprocket (493) and a chain (494); the driving motor (491) is mounted inside the frame (1); the driving sprocket (492) is mounted on an output end of the driving motor (491); the driven sprocket (493) is mounted on the rotating shaft (41); and the driving sprocket (492) and the driven sprocket (493) are connected via a chain (494).

5. The brake performance testing device according to claim 1, characterized in that: A wheel hub fixing disc (47) is mounted on one end of the test shaft (42) opposite to the brake body (43).

6. The braking performance testing device according to claim 1, characterized in that: A fixed pulley (48) for the brake line to pass through is provided on one side of the product fixing block (46), and the fixed pulley (48) is installed on the top of the frame (1).

7. The braking performance testing device according to claim 1, characterized in that: A stand (2) is provided on one side of the frame (1), the flywheel (44) is arranged inside the stand (2), and one end of the rotating shaft (41) passes through the side wall of the stand (2) and is connected to the flywheel (44).

8. The braking performance testing device according to claim 7, characterized in that: The rotating shaft (41) and the testing shaft (42) are both rotatably connected to the frame (1) via seat bearings.

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