Friction disc failure test device

Abstract

The present invention provides a friction disc failure test device including: a driving device, a friction disc device and a measuring system. The driving device includes a motor and a reducer; the friction disc device includes a base, a cylinder, a movable plate, a rotating shaft, a friction plate, a test friction disc, a pressure regulating valve, a compression spring, a bearing seat and a locking member; the measuring system is used to collect data during the friction process between the friction plate and the test friction disc. When performing a friction test, the pressure regulating valve is opened to adjust the cylinder air pressure, and the cylinder pushes the movable plate to move axially along the rotating shaft so that the friction plate contacts the test friction disc and has a first pressure; the motor is turned on, and the first rotating wheel is rotated by the first transmission mechanism, the reducer and the second transmission mechanism to drive the test friction disc to generate friction movement relative to the friction plate, and the data during the friction movement is collected at the same time. The present invention can solve the problem that the friction condition of the friction disc in the prior art is not easy to test.

Description

Technical Field

[0001] The invention relates to a testing device, in particular to a friction disc failure testing device. Background Art

[0002] The electroplating process is to attach a layer of metal film on the surface of metal parts to increase hardness, improve wear resistance, corrosion resistance and other effects. The electroplating wire take-up machine is divided into two styles: centralized control wire take-up and single control wire take-up. The centralized control wire take-up has a compact structure, small footprint, low energy consumption, and is widely used. The centralized control wire take-up only needs one motor on one side to drive the rotation, and each wire take-up is connected and transmitted by a universal joint. The wire take-up tension is adjusted by the friction between the friction disc and the friction plate. Since the friction disc and the friction plate are in continuous contact during the wire take-up operation, long-term friction will reduce the friction performance of the friction disc and easily generate sharp friction noise. The centralized control wire take-up is densely packed, and the friction noise generated by each friction plate will interfere and overlap with each other, which increases the noise at the centralized control wire take-up, pollutes the environment, and causes harm to personnel. Therefore, it is essential to test the friction effect of the friction disc, but in the prior art, there is no test device that is easy to operate, accurate in testing, and easy to replace the friction disc. Summary of the invention

[0003] Therefore, one of the purposes of the present invention is to provide a friction disc failure test device to solve the problem that the friction condition of the friction disc is difficult to test in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides a friction disc failure test device, which includes: a driving device, which includes a motor and a reducer, and the motor is connected to the reducer by a first transmission mechanism; a friction disc device, which includes a base, a cylinder, a movable plate, a rotating shaft, a friction plate, a test friction disc, a pressure regulating valve, a compression spring, a bearing seat and a locking member, the pressure regulating valve is connected to the cylinder to adjust the air pressure of the cylinder, the first end of the cylinder and the first end of the rotating shaft are fixed to the base, the second end of the cylinder is fixed to the movable plate, the movable plate is movably sleeved on the rotating shaft along the axial direction of the rotating shaft, and the friction plate is fixed to the movable plate, the bearing seat is locked to the second end of the rotating shaft by the locking member, and the test friction disc is replaceably arranged on the bearing seat, and the bearing seat is also fixedly provided with a first rotating wheel , the compression spring is located between the movable plate and the bearing seat, and is used to cooperate with the pressure regulating valve to adjust the distance between the friction plate and the test friction plate, wherein the reducer and the rotating shaft of the friction plate device are connected by a second transmission mechanism, and the rotation of the first rotating wheel in the second transmission mechanism drives the bearing seat and the test friction plate to rotate; and a measurement system is used to collect data during the friction process between the friction plate and the test friction plate; when performing a friction test, the pressure regulating valve is opened to adjust the air pressure of the cylinder, and the cylinder pushes the movable plate to move axially along the rotating shaft so that the friction plate contacts the test friction plate and has a first pressure; the motor is turned on, and the first rotating wheel is rotated by means of the first transmission mechanism, the reducer and the second transmission mechanism to drive the test friction plate to produce friction movement relative to the friction plate, and the data during the friction movement is collected by the measurement system.

[0005] As an optional technical solution, the driving device further includes a frequency converter, which is connected to the motor to adjust the rotation speed of the motor.

[0006] As an optional technical solution, the motor is a 2.2KW variable frequency motor, and the reduction ratio of the reducer is i=20.

[0007] As an optional technical solution, the first transmission mechanism includes a first synchronous pulley, a second synchronous pulley and a first synchronous belt tensioned on the first synchronous pulley and the second synchronous pulley, the motor is connected to the first synchronous pulley, and the input shaft of the reducer is connected to the second synchronous pulley; the second transmission mechanism includes a third synchronous pulley, a fourth synchronous pulley and a second synchronous belt tensioned on the third synchronous pulley and the fourth synchronous pulley, the output shaft of the reducer is connected to the third synchronous pulley, the rotating shaft of the friction disc device is connected to the fourth synchronous pulley, and the first rotating wheel is the fourth synchronous pulley.

[0008] As an optional technical solution, the friction plate and the test friction disc are both annular structures.

[0009] As an optional technical solution, the measuring system is a force measurement and acoustic emission system, including a force measuring instrument, an acoustic emission system, a data acquisition card and a signal amplifier which are mutually signal-connected; the friction plate is connected to the force measuring instrument and the acoustic emission system.

[0010] As an optional technical solution, a force feedback device is also included, which is arranged on the friction plate, and the force feedback device is connected to the pressure regulating valve. The pressure regulating valve adjusts the pressure between the friction plate and the test friction disk according to the feedback of the force feedback device.

[0011] As an optional technical solution, the cylinders are four and are evenly arranged at the four corners of the base.

[0012] As an optional technical solution, the locking piece is a locking nut.

[0013] As an optional technical solution, the rotating shaft is a spline shaft, and the movable plate is spline-connected to the rotating shaft.

[0014] Compared with the prior art, the friction disc failure test device of the present invention has an ingenious, compact and reasonable structure. By installing a pressure regulating valve to adjust the cylinder air pressure to control the pressure between the friction disc and the friction plate, and installing a frequency converter to adjust the motor speed to control the friction speed of the friction disc, the friction between the friction disc and the friction plate under different pressures (loads) and different speeds can be easily tested to determine whether the test friction disc has failed, etc.; and it can be easily replaced to test the friction effects of different types of test friction discs.

[0015] The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of a friction disc failure test device according to the present invention;

[0017] Figure 2 Shown Figure 1 An enlarged schematic diagram of the friction disc device in FIG. DETAILED DESCRIPTION

[0018] See also Figure 1 and Figure 2 , Figure 1 Shown is a schematic diagram of a friction disc failure test device according to the present invention; Figure 2 Shown Figure 1The invention provides a friction disc failure test device, which includes a drive device, a friction disc device and a measuring system. The drive device includes a motor 8 and a reducer 4, and the motor 8 is connected to the reducer 4 via a first transmission mechanism. The friction disc device includes a base 10, a cylinder 11, a movable plate 20, a rotating shaft 12, a friction plate 13, a test friction disc 14, a pressure regulating valve 15, a compression spring 16, a bearing seat 17 and a locking member 19. The pressure regulating valve 15 is connected to the cylinder 11 to adjust the air pressure of the cylinder 11. The first end of the cylinder 11 and the first end of the rotating shaft 12 are fixed to the base 10, and the second end of the cylinder 11 is fixed to the movable plate 20. The movable plate 20 is movably sleeved on the rotating shaft 12 along the axis of the rotating shaft 12, and the friction plate 13 is fixed to the movable plate 20. The bearing seat 17 is locked to the second end of the rotating shaft 12 by the locking member 19, wherein the locking member 19 is, for example, a locking nut. In addition, the rotating shaft 12 is, for example, a spline shaft, and the movable plate 20 is spline-connected with the rotating shaft 12 and cannot rotate. The test friction disc 14 is replaceably arranged on the bearing seat 17, and the first rotating wheel 18 is fixedly arranged on the bearing seat 17. The compression spring 16 is located between the movable plate 20 and the bearing seat 17, and is used to cooperate with the pressure regulating valve 15 to adjust the distance between the friction plate 13 and the test friction disc 14. The reducer 4 is connected to the rotating shaft 12 of the friction disc device through the second transmission mechanism, and the rotation of the first rotating wheel 18 in the second transmission mechanism drives the bearing seat 17 and the test friction disc 14 to rotate. The measurement system is used to collect data during the friction process between the friction plate 13 and the test friction disc 14.

[0019] In this embodiment, the measuring system is, for example, a force measuring and acoustic emission system, including a force measuring instrument, an acoustic emission system, a data acquisition card and a signal amplifier which are signal-connected to each other; the friction plate 13 is connected to the force measuring instrument and the acoustic emission system.

[0020] In addition, the driving device further includes a frequency converter 9 , which is connected to the motor 8 to adjust the rotation speed of the motor 8 , thereby controlling the rotation speed of the test friction disk 14 .

[0021] When the friction test is performed, the pressure regulating valve 15 is opened to adjust the air pressure of the cylinder 11. The cylinder 11 pushes the movable plate 20 to move along the axial direction of the rotating shaft 12 so that the friction plate 13 contacts the test friction disc 14 and a first pressure exists between the two. The first pressure can be a pre-set test pressure value. This process can be achieved by fine-tuning the height of the friction plate 13 in the axial direction of the rotating shaft 12 through the pressure regulating valve 15. The motor 8 is turned on, and the first rotating wheel 18 is rotated by the power transmission of the first transmission mechanism, the reducer 4 and the second transmission mechanism. The rotation of the first rotating wheel 18 will drive the test friction disc 14 to produce friction movement relative to the friction plate 13, and the data in the friction movement process is collected by the measurement system. The collected data can be transmitted to the data acquisition card through the signal amplifier, and then transmitted to the computer for calculation, so as to obtain physical quantities such as friction force and acoustic emission signal, so as to confirm the friction condition of the test friction disc 14 and whether it can still be used. Moreover, by adjusting the first pressure by the pressure regulating valve 15 and adjusting the rotation speed of the test friction disc 14 by adjusting the rotation speed of the motor 8 by the frequency converter 9, the friction conditions of the test friction disc 14 under different pressures and different rotation speeds can be tested. Moreover, the friction disc failure test device of the present invention can conveniently replace the test friction disc, and can be applicable to friction tests of different types of friction discs.

[0022] In addition, the first transmission mechanism includes a first synchronous pulley 7, a second synchronous pulley 5, and a first synchronous belt 6 tensioned on the first synchronous pulley 7 and the second synchronous pulley 5, the motor 8 is connected to the first synchronous pulley 7, and the input shaft of the reducer 4 is connected to the second synchronous pulley 5. The second transmission mechanism includes a third synchronous pulley 3, a fourth synchronous pulley 18, and a second synchronous belt 2 tensioned on the third synchronous pulley 3 and the fourth synchronous pulley 18, the output shaft of the reducer 4 is connected to the third synchronous pulley 3, the rotating shaft 12 of the friction disc device is connected to the fourth synchronous pulley 18, and the first rotating wheel 18 is the fourth synchronous pulley.

[0023] In this embodiment, the motor is, for example, a 2.2kw variable frequency motor, and the reduction ratio of the reducer is i=20. During the test, the motor is a 2.2kw variable frequency motor, the first synchronous pulley is a Z32-8M pulley, and the second synchronous pulley is a Z40-8M pulley; the reducer is a reducer with a reduction ratio of i=20, the third synchronous pulley is a Z32-8M pulley, and the fourth synchronous pulley is a Z56-8M pulley; the total transmission ratio of the mechanism is i=40 / 32*20*56 / 32=43.75.

[0024] Moreover, the friction plate 13 and the test friction disc 14 are both, for example, annular structures.

[0025] In another embodiment of the present invention, a force feedback device is further included, which is arranged on the friction plate 13, and the force feedback device is connected to the pressure regulating valve 15, and the pressure regulating valve 15 adjusts the pressure between the friction plate 13 and the test friction disk 14 according to the feedback of the force feedback device. The force feedback device is, for example, a pressure-displacement feedback device, which can detect the pressure change between the friction plate 13 and the test friction disk 14, and thus feed back the signal to the pressure regulating valve 15 to fine-tune the height of the friction plate 13 in the axial direction of the rotating shaft 12, thereby ensuring that the pressure between the friction plate 13 and the test friction disk 14 can be maintained consistent with the set pressure value.

[0026] Moreover, in this embodiment, in order to ensure the stability and uniformity of the pressure between the friction plate and the test friction disc, preferably, there are four cylinders 11 evenly arranged at the four corners of the base 10 .

[0027] In summary, the friction disc failure test device of the present invention has an ingenious, compact and reasonable structure. By installing a pressure regulating valve to adjust the cylinder air pressure to control the pressure between the friction disc and the friction plate, and installing a frequency converter to adjust the motor speed to control the friction speed of the friction disc, the friction between the friction disc and the friction plate under different pressures (loads) and different speeds can be easily tested to determine whether the test friction disc has failed, etc.; and it can be easily replaced to test the friction effects of different types of test friction discs.

[0028] The above detailed description of the preferred embodiments is intended to more clearly describe the features and spirit of the present invention, rather than to limit the scope of protection of the present invention by the preferred embodiments disclosed above. On the contrary, the purpose is to include various changes and arrangements with equivalents within the scope of protection of the claims to be applied for by the present invention. Therefore, the scope of protection of the claims applied for by the present invention should be interpreted in the broadest sense based on the above description, so as to include all possible changes and arrangements with equivalents.

Claims

1. A friction disc failure test device, characterized in that: The friction disc failure test device comprises: A driving device, the driving device comprising a motor and a reducer, the motor and the reducer are connected via a first transmission mechanism; The invention relates to a friction disc device, which comprises a base, a cylinder, a movable plate, a rotating shaft, a friction plate, a test friction disc, a pressure regulating valve, a compression spring, a bearing seat and a locking piece. The pressure regulating valve is connected to the cylinder to adjust the air pressure of the cylinder. The first end of the cylinder and the first end of the rotating shaft are fixed to the base. The second end of the cylinder is fixed to the movable plate. The movable plate is movably sleeved on the rotating shaft along the axial direction of the rotating shaft, and the friction plate is fixed to the movable plate. The bearing seat is locked to the second end of the rotating shaft by the locking piece, and the test friction disc is replaceably arranged on the bearing seat. A first rotating wheel is also fixedly arranged on the bearing seat. The compression spring is located between the movable plate and the bearing seat to communicate with the regulating valve. The pressure valve cooperates to adjust the distance between the friction plate and the test friction disk, wherein the reducer is connected to the rotating shaft of the friction disk device via a second transmission mechanism, and the first rotating wheel in the second transmission mechanism rotates to drive the bearing seat and the test friction disk to rotate; and A measuring system for collecting data during the friction process between the friction plate and the test friction disc; When the friction test is performed, the pressure regulating valve is opened to adjust the air pressure of the cylinder, and the cylinder pushes the movable plate to move axially along the rotating shaft so that the friction plate contacts the test friction plate and has a first pressure; the motor is turned on, and the first rotating wheel is rotated by means of the first transmission mechanism, the reducer and the second transmission mechanism to drive the test friction plate to generate friction movement relative to the friction plate, and the data of the friction movement process is collected by the measurement system; Wherein, the friction plate and the test friction disc are both annular structures; The driving device also includes a frequency converter, which is connected to the motor to adjust the rotation speed of the motor.

2. The friction disc failure testing device according to claim 1, characterized in that: The motor is a 2.2KW variable frequency motor, and the reduction ratio of the reducer is i=20.

3. The friction disc failure testing device according to claim 1, characterized in that: The first transmission mechanism includes a first synchronous pulley, a second synchronous pulley and a first synchronous belt tensioned on the first synchronous pulley and the second synchronous pulley, the motor is connected to the first synchronous pulley, and the input shaft of the reducer is connected to the second synchronous pulley; the second transmission mechanism includes a third synchronous pulley, a fourth synchronous pulley and a second synchronous belt tensioned on the third synchronous pulley and the fourth synchronous pulley, the output shaft of the reducer is connected to the third synchronous pulley, the rotating shaft of the friction disc device is connected to the fourth synchronous pulley, and the first rotating wheel is the fourth synchronous pulley.

4. The friction disc failure testing device according to claim 1, characterized in that: The measuring system is a force measuring and acoustic emission system, comprising a force measuring instrument, an acoustic emission system, a data acquisition card and a signal amplifier which are mutually signal-connected; the friction plate is connected to the force measuring instrument and the acoustic emission system.

5. The friction disc failure testing device according to claim 1, characterized in that: It also includes a force feedback device, which is arranged on the friction plate, and the force feedback device is connected to the pressure regulating valve. The pressure regulating valve adjusts the pressure between the friction plate and the test friction disk according to the feedback of the force feedback device.

6. The friction disc failure testing device according to claim 1, characterized in that: The cylinders are four and are evenly arranged at four corners of the base.

7. The friction disc failure testing device according to claim 1, characterized in that: The locking piece is a locking nut.

8. The friction disc failure testing device according to claim 1, characterized in that: The rotating shaft is a spline shaft, and the movable plate is spline-connected with the rotating shaft.

Images