Performance Durability Test Device for Motorcycle Throttle Cable

Abstract

The present invention discloses a performance durability test device for a motorcycle throttle cable, which includes a sensor fixed on the throttle valve. Above the sensor, there is a proximity switch, which is connected to a control system. The proximity switch detects the position signal after the sensor rotates, thereby judging the state of the throttle cable and monitoring it in real time through the control system. The control system is connected to a drive system, and the drive system is connected to a throttle grip holder through a connector. By cyclically rotating and relaxing the throttle grip, the throttle cable is driven to be tightened and relaxed for a durability test. In the present invention, the action state of the throttle cable is detected by an inductive proximity switch, and the signal is input into the PLC, so that the state of the throttle cable can be judged, and the number of actions of the throttle cable can be recorded. If there is an abnormality, the PLC issues an instruction to the numerical control system to stop and alarm, realizing continuous 24-hour operation without unattended operation, and can adapt to the heights of handlebars of various vehicle models.

Description

Technical Field

[0001] The present invention relates to a durability test device for the performance of a cable, and more particularly to a durability test device for the performance of a motorcycle throttle cable. Background Art

[0002] The power and speed of a vehicle are controlled by the throttle cable to adjust the fuel injection volume. It can be seen that the performance of the throttle cable is crucial among the vehicle components, and it is particularly important to detect the fatigue strength of the throttle cable.

[0003] Chinese Patent Grant Publication No.: CN202582981U, Grant Publication Date: December 05, 2012, discloses a fatigue strength test bench for a throttle cable, which conducts tests by simulating the actual routing and working conditions of the throttle cable. It includes a front frame and a rear frame. A front rocker arm and a front mounting plate are respectively installed on the front frame, and both are arranged along the routing of the throttle cable. A cylinder that can drive its rotation is hinged on the front rocker arm; on the rear frame, a rear mounting plate for fixing the throttle cable sleeve, a rear rocker arm for connecting the other end wire core of the throttle cable, and a spring support are respectively installed, and the three are arranged in sequence along the routing of the throttle cable. A set of springs is provided between the rear rocker arm and the spring support. Its disadvantages are: simulating the cable routing has discrepancies with the actual assembly, so the obtained results cannot fully reflect the actual performance of the throttle cable. The structure of this testing machine is complex, and there is a safety hazard of the throttle cable breaking and popping out during the test, and it is also inconvenient to use. Summary of the Invention

[0004] Object of the Invention: The object of the present invention is to overcome the deficiencies of the existing test capabilities and provide a durability test device for the performance of a motorcycle throttle cable, which solves the problem of the performance test of the throttle cable in the vehicle assembly.

[0005] Technical Solution: The present invention includes a sensor fixed on the throttle valve. A proximity switch is provided above the sensor, and the proximity switch is connected to a control system. The position signal after the sensor rotates is detected by the proximity switch, and then the state of the throttle cable is judged, and it is monitored in real time through the control system; the control system is connected to a drive system, and the drive system is connected to a throttle grip holder through a connector. By cyclically rotating and relaxing the throttle grip, the throttle cable is driven to be tightened and relaxed for a durability test.

[0006] The control system includes a numerical control system and a PLC control box. One end of the PLC control box is connected to the proximity switch, and the other end is connected to the numerical control system. The action state of the throttle cable is monitored in real time through the PLC control box.

[0007] The driving system comprises a motor and a motor driver. One end of the motor driver is connected to the numerical control system, and the other end is connected to the motor. The movement of the motor is controlled by the numerical control system.

[0008] The motor is connected to the connector, and the connector is driven to rotate by the motor.

[0009] The connector is a flexible connector, which is made by continuously twisting a chain, so that no stress is generated between the stepping motor and the throttle handle clamp after being connected, and the throttle handle can be flexibly rotated even if there is a deviation in the installation.

[0010] The motor is slidably connected to the base bracket, so as to adapt to the height of the handlebars of various vehicle models.

[0011] The sensor is a metal sensor.

[0012] The proximity switch is an inductive proximity switch, and is fixed on the vehicle through a bracket. The inductive proximity switch is used to detect the action state of the throttle cable.

[0013] The gap between the read / write head of the inductive proximity switch and the metal sensor is 0.5 mm ± 0.1 mm, thereby detecting the position signal of the metal sensor after rotation.

[0014] The throttle handle clamp is provided with an adjusting screw along its circumference for fixing the throttle handle, and the adjusting screw can be used to make the throttle handle coaxial with the throttle handle.

[0015] Working principle: Through cyclic rotation and loosening of the motorcycle throttle handle, the throttle cable is tightened and loosened for durability test. A metal sensor is installed on the throttle, and an inductive proximity switch is installed at a suitable position on the frame. The inductive proximity switch is used to detect whether the position of the metal sensor is normal after the throttle is rotated, and then the state of the throttle cable is determined. The action state is monitored in real time through the PLC control box.

[0016] Beneficial effects: The present invention has the following advantages:

[0017] (1) The action status of the throttle cable is detected by an inductive proximity switch, and the signal is input into the PLC to determine the state of the throttle cable and record the number of times the throttle cable is actuated. If there is an abnormality, the PLC sends a command to the CNC system to stop the machine and alarm, thus achieving 24-hour continuous operation without human supervision, improving work efficiency and saving labor costs;

[0018] (2) The flexible connector of the present invention is easy to obtain materials, simple to manufacture, has a simple overall device structure, and is low in cost;

[0019] (3) Driven by a CNC system, the rotation angle can be arbitrarily controlled, with good repeatability, high precision and easy adjustment;

[0020] (4) The throttle cable is tested on the whole vehicle, which truly and effectively reflects the actual working state and is convenient for designing and changing parameters.

[0021] (5) The base bracket has a longitudinal "T" - shaped groove, which can adapt to the heights of handlebars of various vehicle models and has wide practicability.

[0022] (6) Since the actuator of this device is a rotary motor, it can be extended to the fields that require rotational motion tests (such as key tests for locks, etc.), and can also be extended to performance tests of various components. By analyzing the required actions and designing and installing different transmission mechanisms, the required functions can be achieved through the programming system, and it has a wide application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further described below with reference to the drawings.

[0025] As Figure 1 shown, the present invention includes a base bracket 1, a stepping motor 2, a stepping motor driver 3, a flexible connector 4, a throttle handle gripper 5, a numerical control system 6, a PLC control box 7, an inductive proximity switch 8, and a metal inductor 9. A longitudinal "T" - shaped groove is provided on the side of the base bracket 1, and the stepping motor 2 is slidably connected in the groove, and the sliding connection structure is used to adapt to the heights of handlebars of various vehicle models. One end of the stepping motor 2 is connected to the stepping motor driver 3, and the other end is connected to the throttle handle gripper 5 through the flexible connector 4, and the throttle handle gripper 5 is connected and fixed to the throttle handle. The flexible connector 4 is made of a 40 - cm - long chain continuously twisted by 90°, and can rotate 360° along with the rotation of the stepping motor 2, and no stress will be generated after the connection between the stepping motor 2 and the throttle handle gripper 5. Even if there is an installation deviation, the throttle handle can still rotate flexibly. The throttle handle gripper 5 is evenly distributed with two rows of adjusting screws at intervals of 120° along its circumferential direction, which are used to fix the throttle handle and can make it coaxial with the throttle handle by adjusting the screws.

[0026] The stepper motor driver 3 is connected in series with the numerical control system 6 and the PLC control box 7 in sequence. The PLC control box 7 is connected to the inductive proximity switch 8. The inductive proximity switch 8 is installed on a bracket near the throttle valve. The bracket is fixed on the whole vehicle, and a metal inductor 9 is fixed on the throttle valve and rotates with the movement of the throttle valve. By adjusting the inductive proximity switch 8, the gap between its reading and writing head and the metal inductor 9 is made 0.5 mm ± 0.1 mm, and then the position signal after the rotation of the metal inductor 9 is detected and transmitted to the PLC control box 7. The PLC control box 7 judges the state of the throttle cable by detecting the position of the metal inductor 9 and issues an instruction to the numerical control system 6.

[0027] When the throttle cable is in a relaxed state, the position of the metal inductor 9 is far from the inductive proximity switch 8, and the signal detected by the inductive proximity switch 8 is "0"; when the throttle cable is tightened, the metal inductor 9 rotates to a position close to the inductive proximity switch 8, and the signal of the inductive proximity switch 8 is "1". At this time, the PLC control box 7 detects the signal of the inductive proximity switch 8. In case of an abnormality, for example, after the throttle cable is stretched, the throttle valve will not act in place, or after the throttle cable is pulled and broken, the throttle valve will stop acting, and the inductive proximity switch 8 will not detect a signal input to the PLC control box 7. When programming the PLC, the working state of the throttle cable is judged by the number of times the switch signal is input to the PLC control box 7 within a set time. If there is no switch signal or the number of signals does not reach the set value within the set time, it is considered that the state of the throttle cable is abnormal, and the PLC control box 7 issues an instruction to the numerical control system 6 to stop the machine and alarm.

[0028] The device assembly process of the present invention is as follows:

[0029] (1) Install the throttle grip holder 5 and adjust it to be coaxial with the throttle grip.

[0030] (2) Install the stepper motor 2 on the base bracket 1 and adjust the height with reference to the motorcycle throttle grip.

[0031] (3) One end of the flexible connector 4 is connected to the motor output shaft, and the other end is connected to the throttle grip through the throttle grip holder 5.

[0032] (4) Drill a hole at a suitable position on the throttle valve, install the metal inductor 9, select a suitable position on the whole vehicle to install the inductive proximity switch 8 through a bracket, rotate the throttle valve, adjust the gap between the reading and writing head of the inductive proximity switch 8 and the metal inductor 9 to 0.5 mm ± 0.1 mm, and observe whether the inductive proximity switch 8 can detect a signal.

[0033] (5) Connect the electrical circuit, debug the action, and program the control.

[0034] The test process of the present invention is as follows:

[0035] (1) Install the throttle cable on the vehicle body according to the assembly process, adjust the length to be appropriate, and try to twist it to ensure flexible movement;

[0036] (2) Power on the numerical control system, set the zero position of the stepping motor, and manually adjust it to the required twisting angle for the test work certificate, that is, the maximum test stroke of the throttle cable, and record the value displayed on the numerical control system;

[0037] (3) While rotating the throttle grip to the maximum position, confirm that the inductive proximity switch has a signal output;

[0038] (4) Program according to the value and automatically run for the durability test.

Claims

1. A performance durability test device for a motorcycle throttle cable, characterized in that It includes a sensor fixed on the throttle valve. There is a proximity switch above the sensor. The proximity switch is connected to the control system. The position signal after the rotation of the sensor is detected by the proximity switch, and then the state of the throttle cable is judged and monitored in real time by the control system. The control system is connected to the drive system. The drive system is connected to the throttle grip holder through a connector. By rotating and relaxing the throttle grip in a cycle, the throttle cable is driven to be tightened and relaxed for a durability test. The connector is a flexible connector made by continuously twisting a chain. The proximity switch is an inductive proximity switch and is fixed on the whole vehicle through a bracket. The gap between the read-write head of the inductive proximity switch and the metal sensor is 0.5mm ± 0.1mm.

2. The motorcycle throttle cable performance durability test device according to claim 1, wherein The control system includes a numerical control system and a PLC control box. One end of the PLC control box is connected to the proximity switch, and the other end is connected to the numerical control system.

3. The motorcycle throttle cable performance durability test device according to claim 1, characterized in that, The drive system includes a motor and a motor driver. One end of the motor driver is connected to the numerical control system, and the other end is connected to the motor.

4. The motorcycle throttle cable performance durability test device according to claim 3, characterized in that The motor is connected to the connector.

5. The motorcycle throttle cable performance durability test device according to claim 3, characterized in that, The motor is slidably connected to the base bracket.

6. The motorcycle throttle cable performance durability test device according to claim 1, characterized in that The sensor is a metal sensor.

7. The performance durability test device for the motorcycle throttle cable according to claim 1, characterized in that, The throttle grip holder is provided with adjusting screws along its circumference.

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