A dry electromagnetic clutch testing device

Abstract

A dry electromagnetic clutch testing device, belonging to the field of measuring devices, is characterized by comprising a base plate, a servo motor, a reducer, an electromagnetic clutch, a torque sensor, and a magnetic powder brake. Driven by a high-precision servo motor, it can accommodate high-torque testing after passing through a reducer (torque amplification). The servo motor precisely controls the drive torque and speed. The reducer increases the torque, accommodating a wider range of electromagnetic clutch testing. The use of a high-precision torque sensor improves test accuracy. Furthermore, the magnetic powder brake serves as a load-applying device, enabling precise control of load accuracy. The dry electromagnetic clutch testing device described in this invention provides a more compact and compact test bench, making it easy to transport and transfer, and suitable for widespread application.

Description

Technical Field

[0001] The invention belongs to the field of measuring devices, and in particular relates to a dry electromagnetic clutch testing device. Background Art

[0002] Electromagnetic clutches control the engagement and disengagement of a clutch by switching on and off the power to a coil. Dry single-plate electromagnetic clutches are a type of electromagnetic clutch. These clutches offer advantages such as compact structure, rapid response, long life, and reliable operation. They are easily remotely controlled and automated, making them widely used in machine tools, packaging, printing, textile equipment, and other applications. Their simple structure, consisting primarily of leads, a stator, a mover, an armature, friction plates, and a coil, without any circuit hardware, allows them to operate in relatively harsh environments. They do not require high-precision component machining and assembly, and can withstand greater shock and vibration. In recent years, with the rapid development of automated control technology, electromagnetic clutch technology has matured, achieving improved response speed and reliability. These clutches have also been widely used in military, aerospace, and other fields. However, due to the high torque and response time requirements for aerospace applications, there is currently no dedicated testing equipment for dry single-plate electromagnetic clutches on the market, resulting in low testing efficiency and hindering their further application. Summary of the Invention

[0003] The present invention aims to solve the above problems and provides a dry electromagnetic clutch testing device.

[0004] The dry electromagnetic clutch testing device described in the present invention includes a base plate, a servo motor, a reducer, an electromagnetic clutch, a torque sensor and a magnetic powder brake; the aforementioned servo motor, reducer, electromagnetic clutch, torque sensor, and magnetic powder brake are coaxially installed on the aforementioned base plate in sequence; the reducer, electromagnetic clutch, torque sensor, and magnetic powder brake are all connected through a coupling; the servo motor, electromagnetic clutch and torque sensor are all provided with brackets for fixed installation, namely, a servo motor bracket, an electromagnetic clutch bracket and a torque sensor bracket.

[0005] Furthermore, in the dry electromagnetic clutch testing device described herein, the electromagnetic clutch bracket includes a clutch retaining plate, a vertical plate, a bearing seat retaining plate, and a clutch bracket base plate. The clutch retaining plate and the bearing seat retaining plate are supported and fixed by the vertical plate. The clutch retaining plate and the bearing seat retaining plate are fixed to the clutch bracket base plate. The clutch retaining plate, the vertical plate, the bearing seat retaining plate, and the clutch bracket base plate form a bracket for securing the electromagnetic clutch under test, providing an independent space for the electromagnetic clutch under test, thereby improving testing accuracy and efficiency to a certain extent.

[0006] Furthermore, in the dry electromagnetic clutch testing device described in the present invention, the electromagnetic clutch is arranged in an electromagnetic clutch bracket; the electromagnetic clutch includes an electromagnetic clutch fixed end, an electromagnetic clutch active end and an electromagnetic clutch passive end; the electromagnetic clutch fixed end is connected to the electromagnetic clutch active end through a bearing; the electromagnetic clutch fixed end is fixedly arranged on the clutch fixed plate; a driving shaft is arranged on the electromagnetic clutch active end; a bearing seat is fixedly arranged on the bearing seat fixed plate; a passive shaft is arranged in the bearing seat; the driving shaft and the passive shaft are connected through the electromagnetic clutch; the driving shaft is connected to the electromagnetic clutch active end through a bearing; the passive shaft is connected to the electromagnetic clutch passive end through an adapter block; a spacer ring is arranged between the adapter block and the bearing seat; the spacer ring is installed on the passive shaft.

[0007] Furthermore, in the dry electromagnetic clutch testing device of the present invention, the output end of the servo motor is connected to the input end of the reducer; the output end of the reducer is connected to the aforementioned driving shaft through a coupling; the driven shaft is connected to one end of the torque sensor through a coupling; and the other end of the torque sensor is connected to the input shaft of the magnetic powder brake through a coupling.

[0008] Furthermore, in the dry electromagnetic clutch testing device of the present invention, two bearings are provided in the bearing seat; the purpose of providing multiple bearings is to make the structure more stable.

[0009] Furthermore, in the dry electromagnetic clutch testing device of the present invention, a plurality of handles are provided on the bottom plate; the provided handles can facilitate the movement of the testing device, thereby improving the efficiency of use.

[0010] The dry electromagnetic clutch testing device of the present invention further includes a main control device; the main control device includes an industrial computer, a power module, a tension controller, a signal conditioning box, and a motor drive module; the industrial computer is electrically connected to the magnetic powder brake via the tension controller; the power module and the signal conditioning box are both electrically connected to the industrial computer; the power module is electrically connected to the servo motor via the motor drive module; the power module is electrically connected to the torque sensor via the signal conditioning box; and the power module is electrically connected to the servo motor. The power module provides power to each main control device.

[0011] Furthermore, the dry electromagnetic clutch testing device of the present invention further includes a human-computer interaction module; the human-computer interaction module is electrically connected to the aforementioned industrial computer; by providing the human-computer interaction module, the operating efficiency of the operator on the testing device is improved.

[0012] Furthermore, in the dry electromagnetic clutch testing device of the present invention, the human-computer interaction module includes a display, a keyboard and a mouse.

[0013] The dry electromagnetic clutch testing device described in this invention is driven by a high-precision servo motor and, after passing through a speed reducer (torque amplification), can accommodate high-torque testing. The servo motor precisely controls the drive torque and speed. The speed reducer increases the torque, accommodating a wider range of electromagnetic clutch testing. The use of a high-precision torque sensor improves test accuracy, and a magnetic powder brake serves as a load-applying device, enabling precise control of load accuracy. The dry electromagnetic clutch testing device described in this invention offers a more compact and compact test bench, making it easy to transport and transfer, making it suitable for widespread application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a dry electromagnetic clutch testing device according to an embodiment of the present invention;

[0015] Figure 2 This is a partial structural diagram of the electromagnetic clutch bracket according to an embodiment of the present invention;

[0016] Figure 3 This is a structural diagram of a dry electromagnetic clutch testing device according to an embodiment of the present invention;

[0017] Among them, 1-base plate, 2-servo motor, 3-reducer, 4-motor bracket, 5-coupling a, 6-electromagnetic clutch bracket, 7-coupling b, 8-torque sensor, 9-torque sensor bracket, 10-coupling c, 11-magnetic powder brake, 12-handle, 13-driving shaft, 14-electromagnetic clutch fixed end, 15-electromagnetic clutch active end, 16-electromagnetic clutch passive end, 17-adapter block, 18-spacer ring, 19-bearing seat, 20-passive shaft, 601-clutch fixed plate, 602-vertical plate, 603-bearing seat fixed plate, 604-clutch bracket base plate. DETAILED DESCRIPTION

[0018] The dry electromagnetic clutch testing device of the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0019] Example 1

[0020] The dry electromagnetic clutch testing device described in the embodiment of the present disclosure is as follows: Figure 1As shown, it includes a base plate 1, a servo motor 2, a reducer 3, an electromagnetic clutch, a torque sensor 8 and a magnetic powder brake 11; the servo motor 2, the reducer 3, the electromagnetic clutch, the torque sensor 8, and the magnetic powder brake 11 are coaxially installed on the base plate 1 in sequence; the reducer 3, the electromagnetic clutch, the torque sensor 8, and the magnetic powder brake 11 are connected by couplings, namely coupling a5, coupling b7, and coupling c10 respectively; the servo motor 2, the electromagnetic clutch and the torque sensor 8 are all provided with brackets for fixed installation, namely servo motor bracket 4, electromagnetic clutch bracket 6 and torque sensor bracket 9 respectively.

[0021] like Figure 2 As shown, the electromagnetic clutch bracket 6 includes a clutch fixing plate 601, a vertical plate 602, a bearing seat fixing plate 603, and a clutch bracket bottom plate 604. In the disclosed embodiment, the clutch fixing plate 601 and the bearing seat fixing plate 603 are supported by two vertical plates 602 and fixed with screws. The clutch fixing plate 601, the bearing seat fixing plate 603, and the clutch bracket bottom plate 604 are also fixed with screws, forming a whole bracket.

[0022] like Figure 2 As shown, a driving shaft 13 is provided on the active end of the clutch; a bearing seat 19 is fixedly provided on the bearing seat fixing plate 603; a passive shaft 20 is provided in the bearing seat 19; the active shaft 13 and the passive shaft 20 are connected through an electromagnetic clutch; the electromagnetic clutch is provided in the electromagnetic clutch bracket 6; the electromagnetic clutch includes an electromagnetic clutch fixed end 14, an electromagnetic clutch active end 15 and an electromagnetic clutch passive end 16; the electromagnetic clutch passive end 16 is connected to the electromagnetic clutch active end 15 through a bearing; the passive shaft 20 is connected to the electromagnetic clutch passive end 16 through an adapter block 17; a spacer ring 18 is provided between the adapter block 17 and the bearing seat 19; the spacer ring 18 is installed on the passive shaft 20; two bearings are provided in the bearing seat 19.

[0023] In the embodiment disclosed herein, the output end of the servo motor 2 and the input end of the reducer 3 are connected by a key, the output end of the reducer 3 and the driving shaft 13 are connected by a coupling a5, the driving shaft 13 and the electromagnetic clutch active end 15 are connected by a key, the electromagnetic clutch fixed end 14 is fixed on the clutch fixed plate 601 of the electromagnetic clutch bracket 6, and the bearing seat 19 is fixed on the bearing seat fixed plate 603 of the electromagnetic clutch bracket 6; the electromagnetic clutch fixed end 14 and the electromagnetic clutch active end 15 are connected by a bearing, the driving shaft 13 and the electromagnetic clutch active end 15 are connected by a key, and the driven shaft 20 and the adapter block 17 are connected in the form of a waist-shaped hole, and can rotate axially at the same time; the spacer ring 18 is installed on the driven shaft 20, between the adapter block 17 and the bearing seat 19, the driven shaft 20 passes through the bearing hole of the bearing seat 19, and the other end is fixed with a retaining ring to limit its axial movement. The torque sensor 8 is fixed to the torque sensor bracket 9, the torque sensor bracket 9 is fixed to the base plate 1, and one end of the torque sensor 8 is connected to the passive shaft 20 using a coupling b7; the magnetic powder brake 11 is fixed to the base plate 1, and the input shaft of the magnetic powder brake 11 is connected to the other end of the torque sensor 8 using a coupling c10; a handle 12 is provided at each of the four corners of the base plate 1.

[0024] During the test, the dry electromagnetic clutch to be measured is fixed and installed according to the above description. The driving mode of the servo motor 2 is torque drive, and the constant torque is set as the required value of the electromagnetic clutch (the torque value can be set according to actual usage) for driving. The torque setting value of the magnetic powder brake 11 is greater than the electromagnetic clutch test value. The electromagnetic clutch active end 15 and the electromagnetic clutch passive end 16 are disconnected before the electromagnetic clutch is energized. After the electromagnetic clutch is energized, the electromagnetic clutch active end 15 and the electromagnetic clutch passive end 16 are attracted into a whole. Since the magnetic powder brake 11 is in the energized braking state, the input and output ends of the torque sensor 8 will have a changing output of the torque value. By collecting the curve of the torque value change of the torque sensor 8 over time, the response time and torque of the electromagnetic clutch can be obtained.

[0025] Example 2

[0026] Based on the above embodiment 1, Figure 3As shown, the dry electromagnetic clutch testing device described in the embodiment of the present disclosure also includes a main control device; the main control device includes an industrial computer, a power module, a tension controller, a signal conditioning box, and a motor drive module. In the embodiment of the present disclosure, the industrial computer is a commonly used computer in the prior art. The power module is used to provide the required power, the tension controller is used to control the magnetic powder brake 11, the signal conditioning box is used to adjust and control various signals, and the motor drive module is used for motor drive control. The industrial computer is electrically connected to the magnetic powder brake 11 via the tension controller; the power module and the signal conditioning box are both electrically connected to the industrial computer; the power module is electrically connected to the servo motor 2 via the motor drive module; the power module is electrically connected to the torque sensor 8 via the signal conditioning box; the power module is electrically connected to the servo motor 2; and the industrial computer is also provided with a display, keyboard, and mouse.

[0027] During the test operation, the operator outputs a control signal to the motor drive module through the industrial computer, thereby accurately controlling the movement of the servo motor 2. The signal conditioning box obtains data from the torque sensor 8, controls the torque of the magnetic powder brake 11 through the tension controller, and sets the constant torque to the required value of the electromagnetic clutch for driving. The torque setting value of the magnetic powder brake 11 is greater than the test value of the electromagnetic clutch. The active end 15 of the electromagnetic clutch and the passive end 16 of the electromagnetic clutch are disconnected before the electromagnetic clutch is energized. After the electromagnetic clutch is energized, the active end 15 and the passive end 16 of the electromagnetic clutch are attracted into a whole. Since the magnetic powder brake 11 is in the energized braking state, the input and output ends of the torque sensor 8 will have a changing output of the torque value. By collecting the curve of the torque value of the torque sensor 8 changing with time, the response time and torque of the electromagnetic clutch can be obtained.

[0028] Obviously, the embodiments described above are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A dry electromagnetic clutch testing device, characterized in that: It includes a base plate (1), a servo motor (2), a reducer (3), an electromagnetic clutch, a torque sensor (8) and a magnetic powder brake (11); The servo motor (2), reducer (3), electromagnetic clutch, torque sensor (8), and magnetic powder brake (11) are coaxially mounted on the base plate (1) in sequence; The reducer (3), electromagnetic clutch, torque sensor (8), and magnetic powder brake (11) are all connected via a coupling; The servo motor (2), electromagnetic clutch and torque sensor (8) are all provided with brackets for fixed installation, namely the servo motor bracket (4), electromagnetic clutch bracket (6) and torque sensor bracket (9); The electromagnetic clutch bracket (6) comprises a clutch fixing plate (601), a vertical plate (602), a bearing seat fixing plate (603) and a clutch bracket bottom plate (604); the clutch fixing plate (601) and the bearing seat fixing plate (603) are supported and fixed by the vertical plate (602); the clutch fixing plate (601) and the bearing seat fixing plate (603) are fixedly arranged on the clutch bracket bottom plate (604); The electromagnetic clutch is arranged in an electromagnetic clutch bracket (6); the electromagnetic clutch comprises an electromagnetic clutch fixed end (14), an electromagnetic clutch active end (15) and an electromagnetic clutch passive end (16); the electromagnetic clutch fixed end (14) and the electromagnetic clutch active end (15) are connected via a bearing; the electromagnetic clutch fixed end (14) is fixedly arranged on a clutch fixed plate (601); A driving shaft (13) is provided at the active end (15) of the electromagnetic clutch; a bearing seat (19) is fixedly provided on the bearing seat fixing plate (603); a passive shaft (20) is provided in the bearing seat (19); the driving shaft (13) and the passive shaft (20) are connected via the electromagnetic clutch; The driving shaft (13) is connected to the electromagnetic clutch driving end (15) via a bearing; The passive shaft (20) is connected to the passive end (16) of the electromagnetic clutch via a transfer block (17); A spacer ring (18) is provided between the adapter block (17) and the bearing seat (19); the spacer ring (18) is mounted on the passive shaft (20); It also includes a main control device; the main control device includes an industrial computer, a power module, a tension controller, a signal conditioning box and a motor drive module; the industrial computer is electrically connected to the aforementioned magnetic powder brake (11) via the tension controller; the power module and the signal conditioning box are both electrically connected to the industrial computer; the power module is electrically connected to the aforementioned servo motor (2) via the motor drive module; the power module is electrically connected to the aforementioned torque sensor (8) via the signal conditioning box; and the power module is electrically connected to the aforementioned servo motor (2).

2. The dry electromagnetic clutch testing device according to claim 1, characterized in that: The output end of the servo motor (2) is connected to the input end of the reducer (3); the output end of the reducer (3) is connected to the aforementioned driving shaft (13) through a coupling; the driven shaft (20) is connected to one end of the torque sensor (8) through a coupling; the other end of the torque sensor (8) is connected to the input shaft of the magnetic powder brake (11) through a coupling.

3. The dry electromagnetic clutch testing device according to claim 2, characterized in that: Two bearings are arranged in the bearing seat (19).

4. The dry electromagnetic clutch testing device according to claim 3, characterized in that: A plurality of handles (12) are provided on the bottom plate (1).

5. The dry electromagnetic clutch testing device according to claim 1 or 4, characterized in that: It also includes a human-computer interaction module; the human-computer interaction module is electrically connected to the aforementioned industrial computer.

6. The dry electromagnetic clutch testing device according to claim 5, characterized in that: The human-computer interaction module includes a display, a keyboard and a mouse.

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