Synchronous belt fatigue testing device

Abstract

The synchronous belt fatigue testing device comprises a testing table and a testing device, one end of the upper surface of the testing table is provided with a motor control cabinet, and the other end of the upper surface of the testing table is provided with a motor. The driving belt wheel is connected to the output end of the motor, and a driven belt wheel is installed at the other end of the driving belt wheel. The driven belt wheel is connected to a pneumatic brake through a shaft. A synchronous belt to be tested is sleeved between the driving belt wheel and the driven belt wheel, and the transmission mechanism is linked with the movable part of the motor. A testing area is formed between the driven belt wheel and the driving belt wheel, and the noise tester is arranged below the testing area, so that noise generated in the testing process of the synchronous belt can be detected, and the noise can be detected. The motor and the noise detection device are connected with the control module and controlled by the control module. The device is exquisite in design and accurate in process, can fully guarantee the fatigue test effect of the synchronous belt, is simple and convenient to operate by a user, and saves the equipment cost and human resources.

Description

Technical field:

[0001] The patent of this invention belongs to the technical field of synchronous belt fatigue testing devices, and specifically relates to a synchronous belt fatigue testing machine. Background technology:

[0002] Synchronous belts are usually made of tensile bodies (such as steel wire ropes or glass fiber ropes), rubber or polyurethane and other materials, and have the characteristics of high precision, low noise, high wear resistance, etc. They are widely used in mechanical equipment that requires precise control of speed and position, such as automobiles, textiles, printing, packaging, medical equipment, stage lighting, communications, food machinery and other fields. Compared with friction belt transmission, the advantage of synchronous belt transmission is that there is no relative sliding between the pulley and the transmission belt, which can ensure a strict transmission ratio and is suitable for small and medium power transmission occasions. The quality of the synchronous belt depends on its fatigue level, and it is the lifeline of an enterprise. It must be ensured that each synchronous belt produced meets certain fatigue requirements. The fatigue strength of the synchronous belt is the main indicator to measure its quality. Therefore, fatigue testing of synchronous belts is very necessary.

[0003] In order to quickly and accurately test the fatigue degree of the synchronous belt, it is necessary to design a special experimental equipment to meet the inspection needs of the enterprise, improve the product qualification rate and production efficiency, and save production costs. Summary of the invention:

[0004] The purpose of the present invention is to provide a synchronous belt fatigue testing machine to solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention is implemented through the following technical solutions:

[0006] The present invention discloses a synchronous belt fatigue test device and a test method thereof, comprising a test bench and a test device, wherein a motor control cabinet is arranged at one end of the upper surface of the test bench, and a motor is arranged at the other end. The driving pulley is connected to the output end of the motor, and a driven pulley is installed at the other end of the driving pulley. The driven pulley is connected to the pneumatic brake through a shaft. A synchronous belt to be tested is sleeved between the driving pulley and the driven pulley, and a transmission mechanism is linked to the movable part of the motor. A test area is formed between the driven pulley and the driving pulley, and a noise tester is arranged below the test area, which can detect the noise generated by the synchronous belt during the test and detect the noise. The motor and the noise detection device are connected to and controlled by a PC controller.

[0007] Preferably, the bottom of the slider is slidably connected to the guide rail through a roller screw, the guide rails are parallel and fixedly connected to the upper surface of the test bench, a bracket is fixed on the slider, and a pneumatic brake is screwed on the bracket. One end of the guide rail is axially connected to the hand wheel through a ball screw.

[0008] Preferably, the transmission device comprises a driving pulley respectively mounted on the output end of the motor and a driven pulley at one end of the pneumatic brake, and a transmission belt is connected between the transmission wheels.

[0009] Preferably, the inner diameter of the driven pulley is larger than that of the driving pulley.

[0010] Preferably, the driving wheel and the driven wheel are provided with a ruler structure for cooperating with the synchronous belt test.

[0011] Preferably, a synchronous belt to be tested is sleeved between the driving pulley and the driven pulley. A test area is formed between the driven pulley and the driving pulley, and the noise tester is arranged below the test area to detect the noise generated by the synchronous belt during the test and to detect the noise.

[0012] Preferably, a control module is also included, the control module includes a motor control cabinet and a PC controller, the motor control cabinet includes a motor driver and a current detection module, both of which are electrically connected to the motor. The PC controller controls the motor control cabinet and the noise detection module through electrical signals.

[0013] The technical effects and advantages of the invention patent: The synchronous belt fatigue test device can realize the control of the experiment by controlling the work of the motor with a PC controller. Two modes of experiments can be performed to meet the test requirements of the synchronous belt under different working conditions. The current value can be used as the measurement object to perform quickly, accurately and reliably. The accuracy of the experiment is greatly increased. By shaking the hand crank, the sliding block and the pneumatic brake on the sliding block move linearly through the rotary motion of the ball screw, so that the synchronous belt is tensioned and matched between the driving pulley and the driven pulley. Then, the center distance between the driving pulley and the driven pulley is adjusted so that the synchronous belt to be tested is tensioned and matched between the driving pulley and the driven pulley to adapt to the test of synchronous belts with different pitch line lengths, thereby simplifying the mechanical device, and the driving and driven wheels can be quickly replaced to adapt to the test of synchronous belts with different characteristics, thereby enriching the test objects of the equipment; the effect of the fatigue test of the synchronous belt can be fully guaranteed, the operation is convenient for users, the labor intensity is reduced, and human resources are saved. Description of the drawings: The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0014] Figure 1 It is a side view structural schematic diagram of the present invention:

[0015] Figure 2 It is a schematic diagram of the top view structure of the present invention:

[0016] In the figure: 1: control cabinet, 2 test bench, 3, hand wheel, 4 guide rail, 5 roller screw, 6 slider, 7 bracket, 8, pneumatic brake, 9 driven pulley, 10 driving pulley, 11 noise test device, 12 motor, 13, synchronous belt to be tested. Specific implementation method:

[0017] The invention discloses a synchronous belt fatigue test device and a test method thereof, comprising a test bench (2) and a test device, wherein a motor control cabinet (1) is arranged at one end of the upper surface of the test bench (2), and a motor (12) is arranged at the other end. The driving pulley (10) is connected to the output end of the motor (12), and a driven pulley (9) is installed at the other end of the driving pulley (10). The driven pulley (9) is connected to the pneumatic brake (9) through an axis. A synchronous belt (13) to be tested is sleeved between the driving pulley (10) and the driven pulley (9), and a transmission mechanism is linked to the movable part of the motor (12). A test area is formed between the driven pulley (9) and the driving pulley (10), and a noise tester (11) is arranged below the test area, which can detect the noise generated by the synchronous belt during the test process and detect the noise. The motor (12) and the noise detection device (11) are connected to and controlled by a PC controller.

[0018] Furthermore, the bottom of the slider (6) is slidably connected to the guide rail (4) through a roller screw (5), and the guide rail (4) is fixedly connected to the upper surface of the test bench (2) in parallel with each other. A bracket (7) is fixed on the slider (6), and a pneumatic brake (8) is screwed on the bracket (7). One end of the guide rail (4) is axially connected to the hand crank wheel (3) through a ball screw (5). When testing is required, a synchronous belt (13) is installed between the driving pulley (10) and the driven pulley (9), and the hand crank wheel (3) is shaken. The rotary motion of the ball screw (5) drives the slider (6) and the pneumatic brake (8) on the slider (6) to move linearly, so that the synchronous belt is tensioned and matched between the driving pulley (10) and the driven pulley (9).

[0019] Furthermore, the transmission device comprises a driving wheel (10) respectively mounted on the output end of the motor (12) and a transmission wheel (9) at the movable end of the pneumatic brake (8), and a transmission belt (13) is connected between the transmission wheels (9). The power of the motor (12) can be output to the driving wheel (9) for testing through the transmission device.

[0020] Furthermore, the driving wheel (10) and the driven wheel (9) are provided with a tooth structure for cooperating with the synchronous belt. The tooth structure is helpful to increase the friction force of the driving wheel and the driven wheel on the test synchronous belt, thereby improving the test efficiency.

[0021] Furthermore, the invention also comprises a control module, which comprises a motor control cabinet (1) and a PC controller, wherein the motor control cabinet (1) comprises a motor driver and a current detection module, both of which are electrically connected to the motor (12). The PC controller controls the motor control cabinet (1) and the noise detector (11) through electrical signals.

[0022] Specifically, when in use, the synchronous belt to be tested is placed on the driving wheel (10) and the driven wheel (9), and the hand-cranked wheel (3) is shaken, and the sliding block (6) and the pneumatic brake (8) on the sliding block are driven to move linearly through the rotary motion of the ball screw (5) so that the synchronous belt is tensioned and matched between the driving pulley (10) and the driven pulley (9). This is to adapt to the testing of synchronous belts with different pitch lengths. The test mode is selected through the PC control terminal;

[0023] Durability test mode: Before use, set the torque value to be achieved, connect the air circuit, and the torque of the pneumatic brake (8) is transmitted to the driven wheel (9) through the pressure reducing valve. When the driven wheel (9) reaches the set torque, stop supplying air. The driving wheel (10) drives the driven wheel (9) to rotate through the tested synchronous belt (13). The tested synchronous belt (13) starts to work and continuously transmits power. When the noise detection device detects the sound of the synchronous belt breaking or slipping, it is transmitted to the PC end. The PC controller will automatically stop the test based on the real-time current size and the set value. At the same time, it cuts off the air circuit and releases the brake. At this time, the duration of the durability test will be recorded on the PC panel. This time is the service life of the tested synchronous belt under load;

[0024] Stalling test mode: When the synchronous belt under test enters the stalling test state, the pneumatic brake (8) starts to work, the air circuit is connected, and air enters the air chamber from the air inlet, pushing the piston rack to drive the friction disc to contact and press the rotating secondary shaft bushing disc to achieve braking. The air pressure is gradually increased until the driven wheel (9) is stuck and stops rotating, and the synchronous belt under test does not work. At the same time, the instantaneous current of the motor (12) exceeds the set value, and the control system controls the motor (12) to stop running. After maintaining the set pause time, the air circuit is cut off, and the piston rack drives the friction disc and the secondary shaft bushing disc to separate quickly under the restoring force of the reset spring, and the brake is released. The motor (12) starts to run again, and the synchronous belt under test enters the working state again. In this way, a stalling test is completed, and the control system records it once. The control system continues to control the synchronous belt under test to perform the stalling test until the number of stalling tests reaches the set number, and the system stops the test. Take out the synchronous belt under test from the tested mechanism and observe its damage, which can indicate the quality of the synchronous belt.

[0025] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have various other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the scope of protection required by the present invention.

Claims

1. A synchronous belt fatigue test device and a test method thereof disclosed in the patent of the present invention include a test bench (2) and a test device, wherein a motor control cabinet (1) is arranged at one end of the upper surface of the test bench (3), and a motor (12) is arranged at the other end. The driving pulley (10) is connected to the output end of the motor (12), and a driven pulley (9) is installed at the other end of the driving pulley (10). The driven pulley (9) is connected to the pneumatic brake (8) through an axis. A synchronous belt (13) to be tested is sleeved between the driving pulley (10) and the driven pulley (9), and a transmission mechanism is linked to the movable part of the motor. A test area is formed between the driven pulley (9) and the driving pulley (10), and a noise tester (11) is arranged below the test area to detect the noise generated by the synchronous belt during the test and to detect the noise. The motor (12) and the noise detection device (11) are connected to and controlled by a PC controller.

2. A synchronous belt fatigue testing device according to claim 1, characterized in that: The bottom of the slider (6) is slidably connected to the guide rail (4) through a roller screw (5), and the guide rails (4) are parallel to each other and fixedly connected to the upper surface of the test bench (2). A bracket (7) is fixed on the slider, and a pneumatic brake (8) is screwed on the bracket. One end of the guide rail (4) is axially connected to the hand-cranked wheel (3) through a ball screw (5).

3. A synchronous belt fatigue testing device according to claim 1, characterized in that: The transmission device comprises a driving pulley (12) respectively installed at the output end of the motor and a driven pulley (9) at one end of the pneumatic brake (8), and a transmission belt (13) is connected between the transmission wheels.

4. A synchronous belt fatigue testing device according to claim 3, characterized in that: The inner diameter of the driven pulley (9) is larger than that of the driving pulley (10).

5. A synchronous belt fatigue testing device according to claim 4, characterized in that: The driving pulley (10) and the driven pulley (9) are provided with a ruler structure for cooperating with the synchronous belt test.

6. A synchronous belt fatigue testing device according to claim 4, characterized in that: A synchronous belt (13) to be tested is sleeved between the driving pulley (10) and the driven pulley (9). A test area is formed between the driven pulley (9) and the driving pulley (10), and a noise tester (11) is arranged below the test area to detect the noise generated by the synchronous belt during the test and to detect the noise.

7. A synchronous belt fatigue testing device according to claim 1, characterized in that: It also includes a control module, which includes a motor control cabinet (1) and a PC controller. The motor control cabinet includes a motor driver and a current acquisition module, which are electrically connected to the motor. The PC controller controls the motor control cabinet and the noise detector through electrical signals.

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