Detection device for automobile brake performance

Abstract

The invention relates to the technical field of automobile brake detection, and particularly discloses an automobile brake performance detection device which comprises an outer box, a motor is arranged outside the outer box, a test wheel is arranged outside the outer box, a transmission assembly is arranged inside the outer box, and the transmission assembly comprises a transmission shaft, a guide shaft, a positioning shaft and a transmission belt. A supporting assembly is arranged in the outer box and comprises a fixing frame, a hydraulic oil cylinder and a guiding ejector rod. According to the invention, an external motor drives a transmission shaft to rotate, so that a transmission belt can drive a test wheel to rotate synchronously, and the output end of a hydraulic oil cylinder extends, so that the side wall of a guide push rod is attached to the side wall of a guide shaft close to the top, and a fixing frame and the hydraulic oil cylinder support the guide shaft close to the top. The position of the guide shaft close to the top is stable, and excessive downward movement of the transmission belt is avoided; the problem that the chassis of the vehicle is damaged when the braking performance of the vehicle is detected in the prior art is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle braking detection, and particularly relates to a detection device for vehicle braking performance. Background Art

[0002] The braking performance of a vehicle refers to the ability of the vehicle to rapidly reduce its speed until it stops. During the driving process of the vehicle, maintaining good braking performance is directly related to traffic safety issues. In order to improve the safety of the vehicle, it is necessary to test the braking performance of the vehicle.

[0003] After retrieval, a Chinese patent with the publication number CN217384725U discloses an anti-wheel movement vehicle braking performance detection device, which belongs to the technical field of vehicle braking detection. A limiting groove is provided on one surface of the limiting frame, symmetric baffles are fixedly connected to the side surface of the limiting groove, an installation groove is communicated with the bottom of the limiting groove, a roller is rotatably connected to the inner wall of the side surface of the installation groove, a rotating belt is in contact connection with the surface of the roller, a tire is in contact connection with the surface of the rotating belt, a hub is clamped on the surface of the tire, and a shaft rod is fixedly installed at the center position of the hub. In this anti-wheel movement vehicle braking performance detection device, by providing the limiting frame and the limiting groove, a wheel limiting mechanism is added to prevent the wheel from disengaging. At the same time, the rotating belt has the function of freely rotating and will not increase the rotational resistance of the wheel, making the vehicle braking performance detection device closer to the authenticity of vehicle road driving, and thus improving the accuracy of the detection data of the vehicle braking performance detection device.

[0004] In the above-mentioned prior art solution, by providing the limiting frame and the limiting groove, a wheel limiting mechanism is added to prevent the wheel from disengaging. However, in the actual use process, since the chassis heights of different vehicles are different, in the above-mentioned prior art solution, when the wheel with a lower chassis enters the inside of the limiting groove, the chassis will contact the limiting frame, and the limiting frame may scratch the chassis of the vehicle, causing damage to the vehicle chassis.

[0005] In view of this, the inventor proposes a detection device for vehicle braking performance to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a detection device for vehicle braking performance. Through the extension of the output end of the hydraulic cylinder, the side wall of the guiding ejector rod is attached to the side wall of the guiding shaft near the top, so that the fixing frame and the hydraulic cylinder support the guiding shaft near the top, ensuring the stable position of the guiding shaft near the top and avoiding the situation that the transmission belt moves down too much, resulting in the contact between the vehicle chassis and the top wall surface of the outer box and causing scratches on the vehicle chassis.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A detection device for the braking performance of an automobile, comprising:

[0009] It includes an outer box, a motor is arranged outside the outer box, a test wheel is arranged outside the outer box, and a transmission component is arranged inside the outer box. The transmission component includes;

[0010] A transmission shaft, a guiding shaft and a positioning shaft. There are two transmission shafts, guiding shafts and positioning shafts. The two transmission shafts are rotationally installed on both sides of the top end inside the outer box in a mirror image manner. The two guiding shafts are arranged at the middle position inside the outer box, and the two positioning shafts are respectively fixedly installed inside the two guiding shafts;

[0011] A transmission belt, and the transmission belt is sleeved on the outer side walls of the two transmission belts and the two guiding shafts;

[0012] A support component is arranged inside the outer box. The support component includes;

[0013] A fixing frame, and the fixing frame is fixedly installed on the inner side wall of the outer box;

[0014] Hydraulic cylinders. There are multiple hydraulic cylinders, and the multiple hydraulic cylinders are fixedly installed equidistantly inside the fixing frame;

[0015] A guiding ejector rod, and the guiding ejector rod is fixedly installed on the top wall surfaces of the multiple hydraulic cylinders.

[0016] In some embodiments, the output end of the motor is fixedly connected to the adjacent transmission shaft.

[0017] In some embodiments, the guiding ejector rod is aligned with the guiding shaft near the top.

[0018] In some embodiments, an adaptation component is arranged inside the outer box. The adaptation component includes;

[0019] Positioning grooves and support springs. There are two positioning grooves and support springs. The two positioning grooves are opened on the corresponding side walls inside the outer box, and the two support springs are respectively arranged inside the two positioning grooves;

[0020] Support gaskets. There are four support gaskets, and the four support gaskets are divided into two groups and are respectively arranged inside the two positioning grooves.

[0021] In some embodiments, both ends of the two positioning shafts are slidably installed inside the two positioning grooves.

[0022] In some embodiments, the support spring inside the positioning groove is arranged between two adjacent support gaskets.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The vehicle to be tested is driven into the interior of the outer box, making the test wheels fit against the side wall of the conveyor belt. The weight of the vehicle presses on the side wall of the conveyor belt. The drive shaft is rotated by an external motor, enabling the conveyor belt to drive the test wheels to rotate synchronously. As the output end of the hydraulic cylinder extends, the side wall of the guiding push rod fits against the side wall of the guiding shaft near the top, allowing the fixing frame and the hydraulic cylinder to support the guiding shaft near the top, ensuring the stable position of the guiding shaft near the top and preventing the conveyor belt from moving down too much, which could cause the vehicle chassis to contact the top wall surface of the outer box and result in scratches on the vehicle chassis; this solves the problem that the vehicle chassis is damaged during the braking performance detection of existing vehicles.

[0025] (2) In the present invention, the elastic force of the support spring is used to push the two support gaskets inside the positioning groove to move away from each other. As a result, the two guiding shafts also move away from each other, spreading the conveyor belt, which facilitates the reset of the conveyor belt and the guiding shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a three-dimensional schematic diagram of a partial structure inside the outer box of the present invention;

[0028] Figure 3 is a schematic diagram of the internal structure of the positioning groove of the present invention;

[0029] Figure 4 is a schematic diagram of the placement of the test wheels of the present invention;

[0030] In the figure: 1, outer box; 21, drive shaft; 22, conveyor belt; 23, guiding shaft; 24, positioning shaft; 31, positioning groove; 32, support spring; 33, support gasket; 41, fixing frame; 42, hydraulic cylinder; 43, guiding push rod; 5, test wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] Please refer to Figures 1 to 4 as shown, a detection device for the braking performance of an automobile, including:

[0034] Outer box 1, a motor is provided on the outside of the outer box 1, a test wheel 5 is provided on the outside of the outer box 1, a transmission assembly is provided inside the outer box 1, and the transmission assembly includes a transmission shaft 21, a transmission belt 22, a guide shaft 23 and a positioning shaft 24. There are two transmission shafts 21 in total, and the two transmission shafts 21 are rotationally installed on both sides of the top end inside the outer box 1 in a mirror image manner. There are also two guide shafts 23, and the two guide shafts 23 are provided at the middle position inside the outer box 1. There are two positioning shafts 24 in total, and the two positioning shafts 24 are respectively fixedly installed inside the two guide shafts 23. The transmission belt 22 is sleeved on the outer side walls of the two transmission belts 22 and the two guide shafts 23. The output end of the motor is fixedly connected to the adjacent transmission shaft 21. A support assembly is provided inside the outer box 1, and the support assembly includes a fixed frame 41, a hydraulic cylinder 42 and a guide ejector rod 43. The fixed frame 41 is fixedly installed on the inner side wall of the outer box 1. There are multiple hydraulic cylinders 42 in total, and the multiple hydraulic cylinders 42 are fixedly installed at equal intervals inside the fixed frame 41. The guide ejector rod 43 is fixedly installed on the top wall surfaces of the multiple hydraulic cylinders 42, and the guide ejector rod 43 is aligned with the guide shaft 23 near the top;

[0035] As can be seen from the above, drive the vehicle to be tested into the inside of the outer box 1, make the test wheel 5 fit against the side wall of the transmission belt 22, the weight of the vehicle presses on the side wall of the transmission belt 22, drive the transmission shaft 21 to rotate through the external motor, so that the transmission belt 22 can drive the test wheel 5 to rotate synchronously. Through the extension of the output end of the hydraulic cylinder 42, make the side wall of the guide ejector rod 43 fit against the side wall of the guide shaft 23 near the top, so that the fixed frame 41 and the hydraulic cylinder 42 support the guide shaft 23 near the top, ensuring the stable position of the guide shaft 23 near the top.

[0036] Embodiment 2:

[0037] A detection device for the braking performance of an automobile, comprising:

[0038] Outer box 1, a motor is provided on the outside of the outer box 1, a test wheel 5 is provided on the outside of the outer box 1, a transmission assembly is provided inside the outer box 1, the transmission assembly includes a transmission shaft 21, a transmission belt 22, a guiding shaft 23 and a positioning shaft 24. There are two transmission shafts 21 in total, and the two transmission shafts 21 are rotatably installed on both sides of the inner top of the outer box 1 in a mirror image. There are also two guiding shafts 23, and the two guiding shafts 23 are arranged at the middle position inside the outer box 1. There are two positioning shafts 24 in total, and the two positioning shafts 24 are respectively fixedly installed inside the two guiding shafts 23. The transmission belt 22 is sleeved on the outer side walls of the two transmission belts 22 and the two guiding shafts 23. The output end of the motor is fixedly connected to the adjacent transmission shaft 21. A support assembly is provided inside the outer box 1, and the support assembly includes a fixed frame 41, a hydraulic cylinder 42 and a guiding ejector rod 43. The fixed frame 41 is fixedly installed on the inner side wall of the outer box 1. There are multiple hydraulic cylinders 42, and the multiple hydraulic cylinders 42 are fixedly installed at equal intervals inside the fixed frame 41. The guiding ejector rod 43 is fixedly installed on the top wall surface of the multiple hydraulic cylinders 42. The guiding ejector rod 43 is aligned with the guiding shaft 23 near the top;

[0039] As can be seen from the above, drive the vehicle to be tested into the inside of the outer box 1, make the test wheel 5 fit against the side wall of the transmission belt 22, the weight of the vehicle presses on the side wall of the transmission belt 22, drive the transmission shaft 21 to rotate through the external motor, so that the transmission belt 22 can drive the test wheel 5 to rotate synchronously. Through the extension of the output end of the hydraulic cylinder 42, make the side wall of the guiding ejector rod 43 fit against the side wall of the guiding shaft 23 near the top, so that the fixed frame 41 and the hydraulic cylinder 42 support the guiding shaft 23 near the top, ensuring the stable position of the guiding shaft 23 near the top.

[0040] The difference between this example and the first embodiment is that an adaption component is provided inside the outer box 1, and the adaption component includes a positioning groove 31, a support spring 32 and a support gasket 33. There are two positioning grooves 31, and the two positioning grooves 31 are opened on the corresponding side walls inside the outer box 1. The two ends of the two positioning shafts 24 are respectively slidably installed inside the two positioning grooves 31. There are two support springs 32, and the two support springs 32 are respectively arranged inside the two positioning grooves 31. There are four support gaskets 33, and the four support gaskets 33 are divided into two groups and are respectively arranged inside the two positioning grooves 31. The support spring 32 inside the positioning groove 31 is arranged between two adjacent support gaskets 33. By utilizing the elasticity of the support spring 32 The two support pads 33 in the positioning groove 31 are pushed to move away from each other, so that the two guide shafts 23 open the transmission belt 22. When the test wheel 5 is pressed on the top of the transmission belt 22, under the pressure of the weight of the vehicle and the restriction of the transmission belt 22, the two guide shafts 23 move toward the side close to each other along the inside of the positioning groove 31, so that the top of the transmission belt 22 is bent, and the contact area between the transmission belt 22 and the test wheel 5 is increased. At the same time, the guide shaft 23 close to the top is supported by the fixing frame 41 and the hydraulic cylinder 42 to limit the downward movement of the guide shaft 23, so as to avoid the transmission belt 22 from moving down too much, resulting in the vehicle chassis contacting the top wall of the outer box 1 and causing scratches on the vehicle chassis.

[0041] As can be seen from the above, by utilizing the elasticity of the support spring 32 to push the two support pads 33 inside the positioning groove 31 to move toward the side away from each other, the two guide shafts 23 open the transmission belt 22, and the vehicle to be tested is driven into the outer box 1, so that the test wheel 5 fits the side wall of the transmission belt 22, and the weight of the vehicle is pressed on the side wall of the transmission belt 22. Under the pressure of the weight of the vehicle and the restriction of the transmission belt 22, the two guide shafts 23 move toward the side close to each other along the inside of the positioning groove 31, so that the top end of the transmission belt 22 is bent, and the contact area between the transmission belt 22 and the test wheel 5 is increased. At the same time, the guide shaft 23 close to the top is supported by the fixing frame 41 and the hydraulic cylinder 42 to limit the downward movement distance of the guide shaft 23, so as to avoid the transmission belt 22 from moving down too much, resulting in the vehicle chassis contacting the top wall of the outer box 1, causing the vehicle chassis to be scratched. The transmission shaft 21 is driven to rotate by an external motor, so that the transmission belt 22 can drive the test wheel 5 to rotate synchronously, and the braking performance of the vehicle is tested.

[0042] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0043] In the accompanying drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection device for the braking performance of an automobile, characterized in that, Comprising: An outer box (1), a motor is provided on the outside of the outer box (1), a test wheel (5) is provided on the outside of the outer box (1), and a transmission assembly is provided inside the outer box (1), and the transmission assembly includes; A transmission shaft (21), a guide shaft (23) and a positioning shaft (24). There are two of the transmission shaft (21), the guide shaft (23) and the positioning shaft (24). The two transmission shafts (21) are rotatably installed on both sides of the top end inside the outer box (1) in a mirror image. The two guide shafts (23) are provided at the middle position inside the outer box (1). The two positioning shafts (24) are respectively fixedly installed inside the two guide shafts (23); A transmission belt (22), and the transmission belt (22) is sleeved on the outer side walls of the two transmission belts (22) and the two guide shafts (23); A support assembly is provided inside the outer box (1), and the support assembly includes; A fixing frame (41), and the fixing frame (41) is fixedly installed on the inner side wall of the outer box (1); Hydraulic cylinders (42). There are multiple hydraulic cylinders (42), and the multiple hydraulic cylinders (42) are fixedly installed inside the fixing frame (41) at equal intervals; A guide ejector rod (43), and the guide ejector rod (43) is fixedly installed on the top wall surfaces of the multiple hydraulic cylinders (42).

2. The detection device for the braking performance of an automobile according to claim 1, characterized in that, The output end of the motor is fixedly connected to the adjacent transmission shaft (21).

3. The detection device for the braking performance of an automobile according to claim 1, characterized in that, The guide ejector rod (43) is aligned with the guide shaft (23) near the top.

4. The detection device for the braking performance of an automobile according to claim 1, characterized in that, An adaptation assembly is provided inside the outer box (1), and the adaptation assembly includes; Positioning grooves (31) and support springs (32). There are two of the positioning grooves (31) and the support springs (32). The two positioning grooves (31) are opened on the corresponding side walls inside the outer box (1). The two support springs (32) are respectively provided inside the two positioning grooves (31); Support gaskets (33). There are four support gaskets (33), and the four support gaskets (33) are divided into two groups and are respectively provided inside the two positioning grooves (31).

5. The detection device for the braking performance of an automobile according to claim 1, characterized in that, Both ends of the two positioning shafts (24) are slidably installed inside the two positioning grooves (31).

6. The detection device for the braking performance of an automobile according to claim 5, characterized in that, The support spring (32) inside the positioning groove (31) is provided between the two adjacent support gaskets (33).

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