Brake rack braking system

Abstract

The utility model discloses a brake rack braking system, and relates to the technical field of automobile brake detection, the brake rack braking system comprises an automobile simulation shaft, the end portion of the automobile simulation shaft is connected with a brake drum in a clamping manner, the other side of the brake drum is connected with a positioning chuck in a clamping manner, and the side surface of the positioning chuck is provided with a locking knob. The end part of the locking knob penetrates through the positioning chuck and the brake drum and is fixedly connected with the automobile simulation shaft; the simulation driving assembly comprises a shell, a simulation transmission recording assembly is movably connected in the shell, the end part of the shell is also slidably connected with a simulation push rod, and the end part of the simulation push rod is fixedly connected with the simulation transmission recording assembly; according to the utility model, after the power is transmitted by the driving worm and the driven worm gear, the braking distance and the braking torque can be strictly controlled in the simulation process, so that the braking distance and the braking torque of a driver can be simulated, and the data is more accurate.

Description

Technical Field

[0001] This utility model specifically relates to the field of automotive brake testing technology, and more specifically to a brake bench braking system. Background Technology

[0002] A brake bench braking system is a device system used to simulate and test brake performance. It mainly consists of a mechanical bench, a drive system, a braking system, and a measurement and control system. The electric motor installed in the bench drives the brake disc to rotate, simulating the vehicle driving process. The braking part mostly uses a cylinder to drive the push rod of the vacuum booster to move.

[0003] Currently, most automotive brake simulation bench braking systems utilize a cylinder to push the push rod of a vacuum booster to move. The push rod at the other end of the vacuum booster pushes the hydraulic oil in the hydraulic cylinder through the pipeline into the KZF hydraulic quick connector. Finally, the hydraulic oil in the KZF hydraulic quick connector pushes the brake shoes in the brake caliper to squeeze against each other, and the rotating brake drum stops rotating through friction.

[0004] However, in practice, it has been noted that while using a cylinder to drive a vacuum booster can quickly move the vacuum booster, it is impossible to accurately measure the braking distance based on the braking effect, nor can it simulate the braking effect based on different braking torques. Furthermore, the high cost of cylinder-driven operation leads to a similarly high operating cost. Utility Model Content

[0005] The purpose of this invention is to provide a brake bench braking system. The system utilizes a servo motor in conjunction with a worm gear transmission at the end to drive a moving push rod. Furthermore, the cooperation between the servo motor and the worm gear transmission allows for precise simulation of the desired braking distance and braking torque, improving the accuracy of the simulation process. This addresses the technical problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A brake test bench braking system, comprising

[0008] The car simulation shaft has a brake drum attached to one end, and a positioning chuck is attached to the other side of the brake drum. A locking knob is provided on the side of the positioning chuck, and the end of the locking knob passes through the positioning chuck and the brake drum and is fixedly connected to the car simulation shaft.

[0009] The analog drive assembly includes a housing, in which an analog transmission recording assembly is movably connected, and an analog push rod is slidably connected to the end of the housing, and the end of the analog push rod is fixedly connected to the analog transmission recording assembly.

[0010] The bottom of the analog drive assembly is fixedly connected to a support base plate, and the end of the support base plate is fixedly connected to a vacuum booster via a corner bracket. The end of the analog push rod is fixedly connected to a torque sensor through the housing, and the other end of the torque sensor is fixedly connected to the vacuum booster.

[0011] As a further technical solution of this utility model, a protective cover is fixedly connected to the top of the housing, and a servo motor is fixedly connected to the side of the protective cover. The output shaft of the servo motor extends through the protective cover to the inside of the protective cover, and a drive pulley is fixedly connected to the end of the servo motor.

[0012] As a further technical solution of this utility model, the analog transmission recording component includes a transmission shaft movably connected to the inside of the housing, and a transmission pulley is fixedly connected to the end of the transmission shaft. The transmission pulley and the drive pulley at the end of the servo motor are connected by a transmission belt.

[0013] As a further technical solution of this utility model, a drive worm is integrally provided on the outer side of the transmission shaft, and a driven worm wheel is connected to the side of the drive worm. A synchronous gear is integrally provided above the driven worm wheel, and the synchronous gear and the driven worm wheel are coaxially arranged and movably connected to the housing through a pin.

[0014] As a further technical solution of this utility model, a push-pull rack is provided on the side of the synchronous gear away from the transmission shaft, and the side of the push-pull rack meshes with the synchronous gear, while a T-shaped groove is provided on the other side of the push-pull rack.

[0015] The end of the push-pull rack is fixedly connected to the simulated push rod, while the other end of the push-pull rack is embedded with an infrared sensor.

[0016] As a further technical solution of this utility model, a T-shaped slide rail is inserted and fitted on the side of the push-pull rack away from the synchronous gear, and the T-shaped slide rail slides and slides in a T-shaped groove, while the other side of the T-shaped slide rail is fixedly connected to the housing.

[0017] As a further technical solution of this utility model, a brake hydraulic cylinder is installed at the end of the vacuum booster away from the torque sensor, a brake caliper is provided above the brake drum, and a KZF hydraulic quick connector is provided between the brake caliper and the brake hydraulic cylinder. The two ends of the KZF hydraulic quick connector are respectively connected to the brake caliper and the brake hydraulic cylinder through connecting oil pipes.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model uses belt drive to make a servo motor drive the transmission shaft to rotate, and then through the meshing between the drive worm and the driven worm wheel, it drives the synchronous gear and the driven worm wheel to rotate synchronously. Finally, through the meshing of the synchronous gear and the push-pull rack, the torque sensor moves. After the power is transmitted through the drive worm and the driven worm wheel, the braking distance and braking torque can be strictly controlled during the simulation process, thereby simulating the driver's braking distance and braking torque, so as to make the data more accurate.

[0020] 2. In this utility model, the side of the T-shaped slide rail is fixedly connected to the inner side of the housing, and the push-pull rack slides with the T-shaped slide rail through the T-shaped groove opened on the side, thereby limiting the movement trajectory of the push-pull rack. Furthermore, an infrared sensor is installed at the end of the push-pull rack, which can measure the braking distance at any time during the simulation process, further precisely control the braking distance, and thus obtain the braking effect under different braking distances.

[0021] 3. In this utility model, the lifting platform set at the bottom of the support base plate can adjust the height of the support base plate, thereby controlling the height of the vacuum booster and the simulation drive component on the support base plate, and making it convenient for workers to disassemble and replace the vacuum booster and the simulation drive component. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0023] Figure 2 This utility model Figure 1 Another perspective view.

[0024] Figure 3 This utility model Figure 1 A partial structural diagram.

[0025] Figure 4 This is a three-dimensional structural diagram of the analog drive component in this utility model.

[0026] Figure 5 This utility model Figure 4 A schematic diagram of the bottom structure.

[0027] Figure 6 This is a three-dimensional structural diagram of the analog transmission recording component in this utility model.

[0028] Figure 7 This utility model Figure 6 Another perspective view.

[0029] Figure 8 This utility model Figure 7 A magnified view of a portion of the image.

[0030] In the picture:

[0031] Locking knob-1, positioning chuck-2, brake drum-3, car simulation shaft-4, brake caliper-5, KZF hydraulic quick connector-6, connecting oil pipe-7, brake hydraulic cylinder-8, hydraulic oil storage box-9, vacuum booster-10, torque sensor-11, simulation drive assembly-12, housing-121, protective cover-122, servo motor-123, simulation push rod-124, support base plate-13, lifting platform-14, simulation transmission recording assembly-15, transmission shaft-151, transmission pulley-152, drive worm gear-153, synchronous gear-154, driven worm wheel-155, push-pull rack-156, T-slot-157, T-slot rail-158, infrared sensor-159. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-8 This utility model provides a brake test bench braking system, including...

[0034] The car simulation shaft 4 has a brake drum 3 attached to one end, and a positioning chuck 2 attached to the other side of the brake drum 3. A locking knob 1 is provided on the side of the positioning chuck 2, and the end of the locking knob 1 passes through the positioning chuck 2 and the brake drum 3 and is fixedly connected to the car simulation shaft 4.

[0035] The analog drive assembly 12 includes a housing 121, in which an analog transmission recording assembly 15 is movably connected, and an analog push rod 124 is slidably connected to the end of the housing 121, and the end of the analog push rod 124 is fixedly connected to the analog transmission recording assembly 15.

[0036] The bottom of the analog drive assembly 12 is fixedly connected to a support base plate 13, and the end of the support base plate 13 is fixedly connected to a vacuum booster 10 via a corner bracket. The end of the analog push rod 124 passes through the housing 121 and is fixedly connected to a torque sensor 11, and the other end of the torque sensor 11 is fixedly connected to the vacuum booster 10.

[0037] A protective cover 122 is fixedly connected to the top of the housing 121, and a servo motor 123 is fixedly connected to the side of the protective cover 122. The output shaft of the servo motor 123 extends through the protective cover 122 to the inside of the protective cover 122, and a drive pulley is fixedly connected to the end of the servo motor 123.

[0038] The analog transmission recording assembly 15 includes a transmission shaft 151 movably connected to the inside of the housing 121, and a transmission pulley 152 is fixedly connected to the end of the transmission shaft 151. The transmission pulley 152 and the drive pulley at the end of the servo motor 123 are connected by a transmission belt.

[0039] The drive worm 153 is integrally provided on the outer side of the drive shaft 151, and a driven worm wheel 155 is connected to the side of the drive worm 153. A synchronous gear 154 is integrally provided above the driven worm wheel 155. The synchronous gear 154 and the driven worm wheel 155 are coaxially arranged and are movably connected to the housing 121 through a pin.

[0040] By adopting the above technical solution, the servo motor 123 drives the transmission shaft 151 to rotate via belt drive. Then, through the meshing between the drive worm 153 and the driven worm wheel 155, the synchronous gear 154 and the driven worm wheel 155 rotate synchronously. Finally, the torque sensor 11 moves through the meshing of the synchronous gear 154 and the push-pull rack 156. After the power is transmitted through the drive worm 153 and the driven worm wheel 155, the braking distance and braking torque can be strictly controlled during the simulation process, thereby simulating the driver's braking distance and braking torque, thus making the data more accurate.

[0041] The synchronous gear 154 is provided with a push-pull rack 156 on the side away from the transmission shaft 151, and the side of the push-pull rack 156 meshes with the synchronous gear 154, while a T-shaped groove 157 is provided on the other side of the push-pull rack 156.

[0042] The end of the push-pull rack 156 is fixedly connected to the simulated push rod 124, while the other end of the push-pull rack 156 is embedded with an infrared sensor 159.

[0043] The push-pull rack 156 is fitted with a T-shaped slide rail 158 on the side away from the synchronous gear 154, and the T-shaped slide rail 158 is slidably engaged with the T-shaped slide groove 157, while the other side of the T-shaped slide rail 158 is fixedly connected to the housing 121.

[0044] By adopting the above technical solution, the side of the T-shaped slide rail 158 is fixedly connected to the inside of the housing 121, while the push-pull rack 156 slides with the T-shaped slide rail 158 through the T-shaped slide groove 157 opened on the side, thereby limiting the movement trajectory of the push-pull rack 156. Furthermore, an infrared sensor 159 is installed at the end of the push-pull rack 156, which can measure the braking distance at any time during the simulation process, further precisely control the braking distance, and thus obtain the braking effect under different braking distances.

[0045] The vacuum booster 10 is equipped with a brake hydraulic cylinder 8 at the end away from the torque sensor 11. A brake caliper 5 is provided above the brake drum 3. A KZF hydraulic quick connector 6 is provided between the brake caliper 5 and the brake hydraulic cylinder 8. The two ends of the KZF hydraulic quick connector 6 are respectively connected to the brake caliper 5 and the brake hydraulic cylinder 8 through connecting oil pipes 7.

[0046] A hydraulic oil storage box 9 is fixedly connected above the brake hydraulic cylinder 8, and the inner side of the hydraulic oil storage box 9 is connected to the brake hydraulic cylinder 8 to replenish the hydraulic oil in the brake hydraulic cylinder 8 and the connecting oil pipe 7 in a timely manner.

[0047] The bottom of the supporting base plate 13 is symmetrically and fixedly connected to a lifting platform 14, which consists of two symmetrically arranged electric push rods. These push rods can move the supporting base plate 13 up and down, thereby adjusting the height of the supporting base plate 13 and facilitating the disassembly and replacement of parts on the supporting base plate 13.

[0048] The end of the car simulation shaft 4 away from the brake drum 3 is fixedly connected to the power simulation device (not shown in the figure), and a PID controller (not shown in the figure) is installed on the side of the power simulation device (not shown in the figure). The PID controller (not shown in the figure) is electrically connected to the power simulation device (not shown in the figure) through wires.

[0049] The power simulation device (not shown in the figure) drives the brake drum 3 to rotate through the car simulation shaft 4 to simulate the vehicle driving process.

[0050] The servo motor 123, infrared sensor 159, and torque sensor 11 are electrically connected to the PID controller (not shown in the figure) via wires. The PID controller (not shown in the figure) controls the rotation of the servo motor 123. The braking process is simulated through the cooperation of the analog transmission recording component 15 and the analog push rod 124. The infrared sensor 159 and the torque sensor 11 detect and record the braking distance and braking torque, respectively, and transmit the collected information to the PID controller (not shown in the figure).

[0051] The working principle of this utility model is as follows: In use, the vacuum booster 10 of the brake is first fixed to the side of the support base plate 13 using a tripod. A torque sensor 11 is installed between the simulated push rod 124 and the vacuum booster 10. Then, the brake drum 3 is fixed to the end of the car simulation shaft 4 using a locking knob 1 and a positioning chuck 2. The power simulation device in the system (not shown in the figure) drives the brake drum 3 to rotate via the car simulation shaft 4, simulating the vehicle's driving state. During braking, the servo motor 123 drives the moving shaft 151 to rotate via belt transmission with the transmission pulley 152. The drive worm gear 153 on the moving shaft 151 drives the synchronous gear 154 to rotate synchronously through the transmission connection with the driven worm wheel 155. Then, through the meshing between the synchronous gear 154 and the push-pull rack 156, the push-pull rack 156 drives the simulated push rod 124 to slide left and right on the side of the T-shaped slide rail 158. The infrared sensor at the end of the push-pull rack 156... Sensor 159 can detect the movement distance of the push-pull rack 156 and transmit the signal to the controller. The controller controls the servo motor 123 to rotate according to the required distance. The simulated push rod 124 drives the drive rod on the side of the vacuum booster 10 to move through the torque sensor 11. The torque sensor 11 can detect the braking torque during the braking process. The brake hydraulic cylinder 8 drives the piston inside the vacuum booster 10 to move, pushing the hydraulic oil through the connecting oil pipe 7 into the KZF hydraulic quick connector 6. The hydraulic oil inside the KZF hydraulic quick connector 6 is quickly transferred to the brake caliper 5 and pushes the brake shoes inside the brake caliper 5 to squeeze the brake drum 3. The braking effect is achieved through friction. At this time, various sensors in the power simulation device (not shown in the figure) will record all the data in the entire simulated braking process and transmit it to the PID controller (not shown in the figure) in the system. The PID controller calculates the required data.

[0052] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A brake test bench braking system, characterized in that: include The car simulation shaft (4) has a brake drum (3) attached to one end, and a positioning chuck (2) is attached to the other side of the brake drum (3). The positioning chuck (2) has a locking knob (1) on its side, and the end of the locking knob (1) passes through the positioning chuck (2) and the brake drum (3) and is fixedly connected to the car simulation shaft (4). The analog drive assembly (12) includes a housing (121), in which an analog transmission recording assembly (15) is movably connected, and an analog push rod (124) is slidably connected to the end of the housing (121), and the end of the analog push rod (124) is fixedly connected to the analog transmission recording assembly (15). The bottom of the analog drive assembly (12) is fixedly connected to a support base plate (13), and the end of the support base plate (13) is fixedly connected to a vacuum booster (10) via a corner bracket. The end of the analog push rod (124) passes through the housing (121) and is fixedly connected to a torque sensor (11), and the other end of the torque sensor (11) is fixedly connected to the vacuum booster (10).

2. The brake bench braking system according to claim 1, characterized in that: A protective cover (122) is fixedly connected to the top of the housing (121), and a servo motor (123) is fixedly connected to the side of the protective cover (122). The output shaft of the servo motor (123) extends through the protective cover (122) to the inside of the protective cover (122), and a drive pulley is fixedly connected to the end of the servo motor (123).

3. The brake bench braking system according to claim 2, characterized in that: The analog transmission recording assembly (15) includes a transmission shaft (151) movably connected to the inside of the housing (121), and a transmission pulley (152) is fixedly connected to the end of the transmission shaft (151). The transmission pulley (152) and the drive pulley at the end of the servo motor (123) are connected by a transmission belt.

4. The brake bench braking system according to claim 3, characterized in that: The drive shaft (151) is integrally provided with a drive worm (153) on its outer side, and a driven worm wheel (155) is connected to the side of the drive worm (153). A synchronous gear (154) is integrally provided above the driven worm wheel (155), and the synchronous gear (154) and the driven worm wheel (155) are coaxially arranged and movably connected to the housing (121) through a pin.

5. The brake bench braking system according to claim 4, characterized in that: The synchronous gear (154) is provided with a push-pull rack (156) on the side away from the transmission shaft (151), and the side of the push-pull rack (156) meshes with the synchronous gear (154), while a T-shaped groove (157) is provided on the other side of the push-pull rack (156). The end of the push-pull rack (156) is fixedly connected to the simulated push rod (124), while the other end of the push-pull rack (156) is embedded with an infrared sensor (159).

6. The brake bench braking system according to claim 5, characterized in that: The push-pull rack (156) is connected to a T-shaped slide rail (158) on the side away from the synchronous gear (154), and the T-shaped slide rail (158) is slidably engaged with the T-shaped slide groove (157), while the other side of the T-shaped slide rail (158) is fixedly connected to the housing (121).

7. The brake bench braking system according to claim 1, characterized in that: The vacuum booster (10) is equipped with a brake hydraulic cylinder (8) at the end away from the torque sensor (11). A brake caliper (5) is provided above the brake drum (3), and a KZF hydraulic quick connector (6) is provided between the brake caliper (5) and the brake hydraulic cylinder (8). The two ends of the KZF hydraulic quick connector (6) are connected to the brake caliper (5) and the brake hydraulic cylinder (8) respectively through connecting oil pipes (7).

Images