Brake caliper efficiency test system

Abstract

The utility model relates to the technical field of caliper testing, in particular to brake caliper efficiency testing equipment. Comprises: a motor controllably outputting a rotational drive; the transmission device is connected with an output shaft of the motor, the transmission device comprises a connecting tool capable of moving in the linear direction based on rotation driving of the motor, and a torque sensor is arranged on the transmission device; the test caliper is arranged in the linear direction of the transmission device, and a force sensor is arranged on the inner side of the test caliper; and the data acquisition control device is connected with a motor controller used for driving the motor, the data acquisition control device is also connected with the torque sensor and the force sensor, and torque data and pressing force data used for calculating the mechanical efficiency of the test calipers are obtained. According to the utility model, a hydraulic test system in the prior art is replaced by motor driving, so that the influence on the environment temperature can be effectively reduced, and the environment temperature is controlled to be stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to caliper testing technical field, concretely relates to a brake caliper efficiency test system. BACKGROUND

[0002] Brake caliper is the key component of brake system, its main function is to deliver brake force from brake caliper to brake disc or brake drum, thereby realizing the brake effect of vehicle, the caliper efficiency test bench under high and low temperature environment can measure the mechanical efficiency and energy conversion efficiency of caliper under high and low temperature environment condition, and evaluate the mechanical efficiency condition of torque conversion of driving part of caliper into clamping force during braking under high and low temperature environment condition.

[0003] The efficiency test of brake caliper in prior art is usually hydraulic test, but in the process of high and low temperature test, the performance of hydraulic oil is obviously affected by environmental temperature, especially in low temperature environment, the viscosity of hydraulic oil increases significantly, resulting in slow response speed of hydraulic system, and the heat capacity of hydraulic system itself is large, it is difficult to accurately control the temperature of test environment in hydraulic test equipment to meet the requirements of high and low temperature test, when the brake caliper is tested under high and low temperature, the hydraulic system itself will absorb or release a large amount of heat, which affects the temperature of test environment, and it is difficult to accurately control the temperature of environment around brake caliper, and the stability of test environment cannot be guaranteed. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a brake caliper efficiency test system, which solves the above technical problems.

[0005] The technical problems solved by the utility model can be solved by the following technical solutions.

[0006] A brake caliper efficiency test system comprises,

[0007] A motor can controllably output rotary drive.

[0008] A transmission device is connected to the output shaft of the motor, and comprises a coupling tool that can move in a straight line direction based on the rotary drive of the motor, and a torque sensor is arranged on the transmission device.

[0009] A test caliper is arranged in the straight line direction of the transmission device, and a force sensor is arranged on the inner side of the test caliper.

[0010] A data acquisition control device is connected to a motor controller for driving the motor, and is also connected to the torque sensor and the force sensor, so as to acquire torque data and compression force data for calculating the mechanical efficiency of the test caliper.

[0011] Preferably, the transmission device comprises a coupling shaft, the output shaft of the motor rotates and moves through the coupling shaft to the coupling tool, and the torque sensor is arranged on the coupling shaft.

[0012] Preferably, the transmission device further comprises a ball screw structure arranged in the coupling tool, the motor is connected with the ball screw structure through the coupling shaft, and the ball screw structure comprises,

[0013] a screw rod and a nut movable along the axial direction of the screw rod, the screw rod and the inside of the nut are both provided with mutually matched helical grooves, and the nut is fixedly connected with the coupling tool.

[0014] balls filled between the helical grooves of the screw rod and the nut.

[0015] Preferably, the control cabinet further comprises an industrial computer arranged in the control cabinet and connected with the data acquisition control device, and the industrial computer is further connected with an interactive device for acquiring external instructions.

[0016] Preferably, the control cabinet further comprises,

[0017] a program-controlled direct-current power supply connected with the data acquisition control device.

[0018] a current sensor connected with the program-controlled direct-current power supply and configured to acquire the output current of the program-controlled direct-current power supply.

[0019] Preferably, the control cabinet further comprises,

[0020] an uninterruptible power supply connected with the industrial computer.

[0021] a CAN bus device, and the industrial computer is connected with an electronic mechanical brake controller in the equipment cabinet through the CAN bus device.

[0022] Preferably, the control cabinet is a rack structure formed by a metal frame, the control cabinet is provided with a control panel provided with a plurality of indicator lights, and the control cabinet is provided with an industrial computer support for mounting the industrial computer and a data acquisition control device support for mounting the data acquisition control device.

[0023] Preferably, the force sensor is a strain type force sensor with a full-scale range of more than 40kN.

[0024] Preferably, the control cabinet further comprises a bearing support and a jaw body support, the motor is arranged on the bearing support, and the test caliper is arranged on the jaw body support.

[0025] Preferably, the motor is a servo motor provided with an encoder, and the output shaft of the motor is connected with a planetary reducer.

[0026] The utility model discloses beneficial effect: since adopting above technical scheme, the utility model discloses motor drive replaces the hydraulic test system in prior art, can effectively reduce the influence to ambient temperature, control ambient temperature and keep stable. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the structural schematic diagram of brake caliper efficiency test system in the utility model embodiment;

[0028] Figure 2 It is the hardware system architecture diagram of brake caliper efficiency test system in the utility model embodiment;

[0029] Figure 3 It is the test flow chart of brake caliper efficiency test system in the utility model embodiment;

[0030] Figure 4 It is the transmission structure schematic diagram of brake caliper efficiency test system in the utility model embodiment. DETAILED DESCRIPTION

[0031] The technical scheme in the utility model embodiment will be described clearly and completely below in conjunction with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0032] It should be noted that the embodiment in the utility model and the features in the embodiment can be combined with each other in the case of no conflict.

[0033] The utility model will be further described below in conjunction with the drawings and specific embodiment, but not as the limitation of the utility model.

[0034] A brake caliper efficiency test system, as shown in Figure 1 , Figure 2 It includes,

[0035] Motor 1 controllably outputs rotary drive;

[0036] Transmission device is connected with the output shaft of motor 1, and the transmission device includes coupling tool 3 that can move along a straight line direction based on the rotary drive of motor 1, and the transmission device is provided with torque sensor 51;

[0037] Test caliper 4 is arranged in the straight line direction of transmission device, and the inner side of test caliper 4 is provided with force sensor 52;

[0038] The data acquisition control device 62 is connected with the motor controller 63 for driving the motor 1, and is also connected with the torque sensor 51 and the force sensor 52, so as to acquire torque data and pressing force data for calculating the mechanical efficiency of the test caliper 4.

[0039] Specifically, the utility model discloses a motor 1 as the power source of caliper efficiency test, and the rotational motion of the motor 1 is efficiently converted into the linear motion of the coupling tool 3 through the transmission device, so that the transmission efficiency and precision are higher, the overall structure is simple, the influence of environmental temperature is smaller, the environmental temperature is not easily destroyed, and the utility model also has the advantages of high test precision and fast response speed.

[0040] In a preferred embodiment, the transmission device comprises a shaft coupling 2, the rotational motion of the output shaft of the motor 1 is transmitted to the coupling tool 3 through the shaft coupling 2, and the torque sensor 51 is arranged on the shaft coupling.

[0041] Specifically, the utility model discloses a motor 1 through the shaft coupling 2, guarantees the smooth transmission of power, effectively avoids the vibration and impact caused by improper connection, ensures that the clamping force can be stably applied to the test caliper 4 in the test process, so that more accurate test results are obtained.

[0042] The torque sensor 51 is used for sensing the torque output to the test caliper 4, the force sensor 52 is used for sensing the clamping force of the test caliper 4, and the mechanical efficiency of the test caliper 4 is calculated by measuring the relationship between the torque and the force (the ratio of the torque to the force).

[0043] In a preferred embodiment, the transmission device further comprises a ball screw structure arranged in the coupling tool 3, the motor 1 is connected with the ball screw structure through the shaft coupling 2, and the ball screw structure comprises,

[0044] A screw rod and a nut movable along the axial direction of the screw rod, the screw rod and the inside of the nut are both provided with spiral grooves matched with each other, and the nut is fixedly connected with the coupling tool 3.

[0045] Ball bearings are filled between the spiral grooves of the screw rod and the nut.

[0046] Specifically, in the ball screw structure, the nut is fixedly connected with the coupling tool 3, and the screw rod is connected with the shaft coupling 2. When the output shaft of the motor 1 rotates, the screw rod is driven to rotate through the shaft coupling 2, and since the nut is limited by the coupling tool 3 and cannot rotate, only the nut can move along the axial direction of the screw rod, so that the rotational motion of the output shaft of the motor 1 is converted into the linear motion of the nut (and the coupling tool 3).

[0047] The coupling tool 3 transmits the linear motion of the nut to the test clamp, the force sensor 52 is installed inside the clamp, and the data collected by the force sensor 52 and the torque sensor 51 are transmitted to the industrial computer 61 through the data acquisition control device 62 for processing and display.

[0048] If it is necessary to increase the pressing force on the test clamp 4, the industrial computer 61 sends an instruction to the motor controller 63 through the data acquisition control device 62 to increase the torque output of the motor 1, and the change of the motor 1 speed or torque will be converted into greater linear driving force through the ball screw structure, thereby increasing the pressing force on the test clamp 4.

[0049] In a preferred embodiment, the industrial computer 61 is further provided in the control cabinet 6, connected to the data acquisition control device 62, and the industrial computer 61 is further connected to the interactive device 65 for obtaining external instructions.

[0050] In a preferred embodiment, the industrial computer 61 is further provided in the control cabinet 6, connected to the data acquisition control device 62, and the industrial computer 61 is further connected to the interactive device 65 for obtaining external instructions.

[0051] The programmable DC power supply 67 is connected to the data acquisition control device 62;

[0052] The current sensor 64 is connected to the programmable DC power supply 67 to collect the output current of the programmable DC power supply 67.

[0053] In a preferred embodiment, the industrial computer 61 is further provided in the control cabinet 6, connected to the data acquisition control device 62, and the industrial computer 61 is further connected to the interactive device 65 for obtaining external instructions.

[0054] The uninterruptible power supply 68 is connected to the industrial computer 61;

[0055] The CAN bus device 66 is connected to the electronic mechanical brake controller 81 in the equipment cabinet 8 through the CAN bus device 66.

[0056] In a preferred embodiment, the control cabinet 6 is a rack structure made of a metal frame, the control cabinet 6 is provided with a control panel with multiple groups of indicator lights, and the control cabinet 6 is provided with an industrial computer support for installing the industrial computer 61 and a data acquisition control device support for installing the data acquisition control device 62.

[0057] Specifically, the control cabinet 6 includes a cabinet body, various supports, bridges and the like installed in the cabinet body, the cabinet body is built by a metal frame and is a multi-U standard cabinet with a height of 1.5 meters or more, the panel of the control cabinet 6 includes multiple groups of switches, indicator lights and the like, and the inside includes an industrial computer support, a data acquisition control device support, an air switch, an intermediate relay and the like.

[0058] In a preferred embodiment, the force sensor 52 is a strain gauge force sensor with a full-scale range exceeding 40kN.

[0059] Specifically, the efficiency test needs to provide at least 40kN clamping force, and in the embodiment, the full-scale force sensor 52 adopts a 100Kn strain force sensor, and the torque sensor 51 adopts a 100Nm high-precision torque sensor.

[0060] The CAN bus device 66 is mainly used for communication and control with an electronic mechanical brake system (EMB) controller, is compatible with CANFD, the communication rate is controllable, and the control instruction at least includes a brake force size, a brake start, a brake end instruction according to the instruction, and the like, and the cyclic control can be realized by programming.

[0061] The program-controlled direct-current power supply 67 can provide a power supply for the electronic mechanical brake system. The stable current supply under the condition of 12VDC power supply needs to be met, and the maximum working current is 100A.

[0062] The motor 1, the planetary reducer 9 and the motor controller 63 are used to provide rotary drive, and two control modes, speed control or torque control, can be adopted, and different control modes are selected according to different test requirements.

[0063] The data acquisition control device 62 includes an interface with the motor controller 63, the torque sensor 51, the force sensor 52, the current sensor 64 and the industrial computer 61, the industrial computer 61 and the display are arranged in the control cabinet 6, the data acquisition control device 62 is installed in the industrial computer 61, and the display, the keyboard and the mouse complete the man-machine interaction function according to the requirement.

[0064] In a more preferred embodiment, the bearing support 71 and the clamp body support 72 are further included, the motor 1 is arranged on the bearing support 71, and the test clamp 4 is arranged on the clamp body support 72.

[0065] Specifically, the bearing support 71 and the clamp body support 72 are arranged to support the motor 1 and the test clamp 4 respectively, the stable installation and the accurate position relationship of the components in the test process are ensured, and the measurement error caused by the shaking or displacement of the components is reduced.

[0066] In a more preferred embodiment, the motor 1 is a servo motor with an encoder, and the output shaft of the motor 1 is connected with the planetary reducer 91.

[0067] Specifically, the servo motor 1 with the encoder is adopted, and the planetary reducer 91 is combined, so that the rotary drive output can be accurately controlled. The torque sensor 51 arranged on the shaft coupling 2 can monitor the torque change in the transmission process in real time, the force sensor 52 arranged on the inner side of the test clamp 4 can collect the force data of the clamp in all directions and at multiple angles, and the mechanical efficiency of the clamp can be comprehensively evaluated.

[0068] In a specific embodiment, as shown in Figure 2As shown, the system hardware structure of the utility model adopts industrial computer 61 as central control unit, motor 1 and motor controller 63 provide rotary motion, data acquisition control device 62 provides program control and signal acquisition,

[0069] Among them, industrial computer 61 as core control unit, with interactive device 65 is connected, interactive device 65 includes display screen, keyboard and mouse etc., convenient for operator to carry out man-machine interaction, input instruction and view system state information etc.

[0070] Uninterruptible power supply 68 (UPS) for industrial computer 61 and other equipment provides uninterrupted power supply, data acquisition control device 62 and industrial computer 61 are connected bidirectionally, on the one hand, receive the instruction of industrial computer 61, on the other hand, gather various data in the system, and feedback to industrial computer 61 for processing.

[0071] Electronic mechanical brake controller 81 (EMB) in equipment cabinet 8 is connected with industrial computer 61 through CAN bus device 66, program-controlled DC power supply 67 provides stable DC power supply for data acquisition control device 62, and is connected with current sensor 64, and current sensor 64 detects the output current of program-controlled DC power supply 67.

[0072] System software includes configuration software, real-time acquisition and analysis software, data analysis and test report generation software, etc., and the software function and structure are as follows Figure 3 As shown.

[0073] Configuration software includes CAN bus configuration, motor control parameter configuration, standard test process configuration, analog parameter configuration, project information and disk storage configuration, etc., real-time control and data acquisition software will include test selection, test process control and data acquisition, online curve display and result prompt, test report generation, etc.; test report and data analysis software includes test report and data analysis and post-processing.

[0074] In a specific embodiment, as Figure 4 The specific transmission structure of the caliper efficiency testing device is shown. The servo motor 1 serves as a power source, and the power output by the servo motor 1 is subjected to speed reduction and torque increase processing by the planetary reducer 91 to obtain a torque and speed range suitable for caliper testing. The coupling 2 is connected after the planetary reducer 91 and serves to transmit torque, and at the same time, the elastic properties of the coupling 2 can to some extent buffer the impact and vibration caused by the operation of the motor 1 or changes in load. The torque sensor 51 is installed to monitor the torque size in real time during transmission. The coupling tool 3 and the ball screw structure of the transmission device are arranged in the environmental box sleeve 93. The output of the coupling 2 is connected with the ball screw structure through the flange part 92, and the test caliper 4 is directly connected with the product flange 94, so as to transmit the clamping force output by the transmission device to the test caliper 4.

[0075] The above merely describes preferred embodiments of the present application, and is not intended to limit the embodiments and the protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A brake caliper efficiency testing system, characterized by, Comprising, a motor (1) capable of controllably outputting rotary drive; a transmission device connected to the output shaft of the motor (1), the transmission device comprising a coupling tool (3) capable of moving in a linear direction based on the rotary drive of the motor (1), the transmission device being provided with a torque sensor (51); a test caliper (4) provided in the linear direction of the transmission device, the inner side of the test caliper (4) being provided with a force sensor (52); a data acquisition control device (62) connected to a motor controller (63) for driving the motor (1), the data acquisition control device (62) also being connected to the torque sensor (51) and the force sensor (52) to obtain torque data and compression force data for calculating the mechanical efficiency of the test caliper (4).

2. The brake caliper efficiency testing system of claim 1, wherein, The transmission device comprises a shaft coupling (2), the rotary motion of the output shaft of the motor (1) is transmitted to the coupling tool (3) through the shaft coupling (2), and the torque sensor (51) is arranged on the shaft coupling.

3. The brake caliper efficiency testing system of claim 2, wherein, The transmission device further comprises a ball screw structure arranged in the coupling tool (3), the motor (1) is connected to the ball screw structure through the shaft coupling (2), and the ball screw structure comprises, a screw rod and a nut capable of moving along the axis of the screw rod, the screw rod and the inside of the nut are both provided with spiral grooves matched with each other, and the nut is fixedly connected with the coupling tool (3); balls filled between the spiral grooves of the screw rod and the nut.

4. The brake caliper efficiency testing system of claim 1, wherein, Further comprising an industrial computer (61) arranged in a control cabinet (6) and connected to the data acquisition control device (62), the industrial computer (61) is also connected to an interactive device (65) for obtaining external instructions.

5. The brake caliper efficiency testing system of claim 1, wherein, Further comprising, a program-controlled DC power supply (67) connected to the data acquisition control device (62); a current sensor (64) connected to the program-controlled DC power supply (67) to collect the output current of the program-controlled DC power supply (67).

6. The brake caliper efficiency testing system of claim 4, wherein, Further comprising, an uninterruptible power supply (68) connected to the industrial computer (61); a CAN bus device (66), the industrial computer (61) is connected to an electronic mechanical brake controller (81) in an equipment cabinet (8) through the CAN bus device (66).

7. The brake caliper drag testing system of claim 4, wherein, The control cabinet (6) is a rack structure composed of a metal frame, the control cabinet (6) is provided with a control panel with multiple indicator lights, and the control cabinet (6) is provided with an industrial computer support for mounting the industrial computer (61) and a data acquisition control device support for mounting the data acquisition control device (62).

8. The brake caliper efficiency testing system of claim 1, wherein, The force sensor (52) is a strain gauge force sensor with a full-scale range exceeding 40kN.

9. The brake caliper efficiency testing system of claim 1, wherein, Further comprising a bearing support (71) and a caliper body support (72), the motor (1) is arranged on the bearing support (71), and the test caliper (4) is arranged on the caliper body support (72).

10. The brake caliper efficiency testing system of claim 1, wherein, The motor (1) is a servo motor with an encoder, and the output shaft of the motor (1) is connected to a planetary reducer (91).

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