Device for measuring torque value of permanent magnet torque limiter during soft start

Abstract

The utility model discloses a device for measuring a torque value of a permanent magnet torque limiter during soft start. The device for measuring the torque value of the permanent magnet torque limiter during soft start comprises a variable-speed motor which is provided with a variable-speed motor output end, and the variable-speed motor output end is connected with one of a magnet disc or a conductor disc of the permanent magnet torque limiter to be tested; a first torque sensor output shaft of the torque sensor is connected with the other one of the magnet disc and the conductor disc of the permanent magnet torque limiter to be tested; and the brake assembly comprises a movable end and a fixed end, and the fixed end is connected with the torque sensor. According to the device for measuring the torque value of the permanent magnet torque limiter in the soft starting process, the output torque value of the permanent magnet torque limiter can be obtained and displayed in real time in the speed changing process of the motor, and therefore the problem that in the prior art, the output torque value change of the permanent magnet torque limiter in the speed changing process of the motor cannot be observed in real time is solved.

Description

Technical Field

[0001] The present application relates to the technical field of torque measurement of permanent magnet torque limiters, and in particular to a device for measuring the torque value of a permanent magnet torque limiter during soft start. Background Art

[0002] With the development of permanent magnet technology, the application of magnetic coupling is becoming more and more extensive. Magnetic coupling realizes torque transmission from motor to load through the air gap between the conductor copper disk and the magnetic disk, realizing no mechanical connection between the driver and the driven. It has the characteristics of non-contact power transmission, vibration reduction, friction-free, allowing the driving shaft to be misaligned, adjustable output speed, energy saving and environmental protection, motor overload protection and soft start function, and has been widely used in mining machinery.

[0003] There is no device in the prior art that can observe the motor starting in real time when the permanent magnet torque limiter is soft started. Utility Model Content

[0004] The utility model aims to provide a device for measuring the torque value of a permanent magnet torque limiter during soft start to at least solve one of the above technical problems.

[0005] In one aspect of the utility model, a device for measuring the torque value of a permanent magnetic torque limiter during soft start is provided, wherein the device for measuring the torque value of a permanent magnetic torque limiter during soft start comprises:

[0006] A variable speed motor, wherein the variable speed motor has a variable speed motor output end, and the variable speed motor output end is connected to one of the magnet disk or the conductor disk of the permanent magnet torque limiter to be tested;

[0007] A torque sensor, wherein a first torque sensor output shaft of the torque sensor is connected to the other of the magnet disk or the conductor disk of the permanent magnet torque limiter to be tested;

[0008] A brake assembly, the brake assembly comprising a movable end and a fixed end, the fixed end being connected to the torque sensor; wherein,

[0009] The variable speed motor is used to drive the permanent magnet torque limiter to be tested to work;

[0010] The movable end of the brake assembly is used to cooperate with the fixed end to provide resistance for the magnetic disk or conductor disk of the permanent magnetic torque limiter to be tested that is connected to the torque sensor.

[0011] Optionally, the device for measuring the torque value of the permanent magnet torque limiter during soft start further comprises:

[0012] A support plate, one or more of the variable speed motor, the torque sensor and the brake assembly are arranged on a surface of the support plate.

[0013] Optionally, the device for measuring the torque value of the permanent magnet torque limiter during soft start further comprises:

[0014] A control box, the control box being arranged on another surface of the support plate;

[0015] A controller is disposed in the control box and is connected to the variable speed motor and the torque sensor, and is used for controlling the operation of the variable speed motor and receiving torque information transmitted by the torque sensor.

[0016] Optionally, the device for measuring the torque value of the permanent magnet torque limiter during soft start further comprises:

[0017] A display, wherein the display is arranged on a peripheral side wall of the control box, the display is connected to the controller, and is used to display the torque information transmitted by the torque sensor.

[0018] Optionally, the brake assembly comprises:

[0019] A single conductor disk, the single conductor disk serving as the fixed end;

[0020] A single magnetic disk, the single magnetic disk serving as the movable end;

[0021] A driving device is connected to the single magnet disk and is used to drive the single magnet disk to approach or move away from the single conductor disk.

[0022] Optionally, the device for measuring the torque value of the permanent magnet torque limiter during soft start further comprises:

[0023] An explosion-proof shell is installed on a surface of the support plate where the variable speed motor is arranged. The permanent magnet torque limiter to be tested and the movable end and the fixed end of the brake assembly are all arranged in the explosion-proof shell.

[0024] Optionally, a plurality of drive device mounting holes are provided on the support plate;

[0025] The driving device can be connected to the support plate through one or more driving device mounting holes; wherein,

[0026] When the driving device is installed in different driving device installation holes, the maximum distance between the fixed end and the movable end is different.

[0027] Optionally, the variable speed motor comprises:

[0028] A support body connected to the support plate;

[0029] A motor body is mounted on the support body.

[0030] Optionally, the explosion-proof shell is provided with a first hole and a second hole;

[0031] The motor body is arranged outside the explosion-proof shell, and the variable speed motor output shaft of the motor body passes through the first hole and is connected to the permanent magnetic torque limiter to be tested;

[0032] The driving device is arranged outside the explosion-proof shell, and a driving device connecting shaft of the driving device used for connecting with the single magnet disk passes through the second hole and is connected with the single magnet disk.

[0033] Optionally, the conductor disc is connected to the output shaft of the variable speed motor.

[0034] Beneficial Effects

[0035] The device for measuring the torque value of the permanent magnet torque limiter during soft start of the present application provides a device that can obtain and display the output torque value of the permanent magnet torque limiter in real time during the motor speed change process, thereby solving the problem in the prior art that it is impossible to observe the change of the output torque value of the permanent magnet torque limiter in real time during the motor speed change process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a device for measuring the torque value of a permanent magnet torque limiter during soft start according to an embodiment of the present application, wherein the brake assembly is in a non-braking state.

[0037] Figure 2 It is a structural schematic diagram of a device for measuring the torque value of a permanent magnet torque limiter during soft start according to an embodiment of the present application, wherein the brake assembly is in a braking state.

[0038] Figure 3 It is a structural schematic diagram of a device for measuring the torque value of a permanent magnet torque limiter during soft start with an explosion-proof shell according to an embodiment of the present application.

[0039] Reference numerals:

[0040] 1. Variable speed motor; 2. Permanent magnetic torque limiter to be tested; 21. Magnetic disk; 22. Conductor disk; 3. Torque sensor; 4. Brake assembly; 5. Support plate; 6. Control box; 7. Display; 41. Single conductor disk; 42. Single magnetic disk; 43. Driving device; 8. Explosion-proof shell; 11. Support body; 12. Motor body; DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the implementation of this application clearer, the technical scheme in the embodiment of this application will be described in more detail below in conjunction with the drawings in the embodiment of this application. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of this application, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain this application, and should not be construed as limitations on this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The embodiments of this application are described in detail below in conjunction with the drawings.

[0042] Figure 1 It is a structural schematic diagram of a device for measuring the torque value of a permanent magnet torque limiter during soft start according to an embodiment of the present application, wherein the brake assembly is in a non-braking state. Figure 2 It is a structural schematic diagram of a device for measuring the torque value of a permanent magnet torque limiter during soft start according to an embodiment of the present application, wherein the brake assembly is in a braking state.

[0043] like Figure 1 as well as Figure 2 The device for measuring the torque value of the permanent magnet torque limiter during soft start as shown comprises a variable speed motor 1, a torque sensor 3 and a brake assembly 4, wherein:

[0044] The variable speed motor 1 has a variable speed motor output terminal, and the variable speed motor output terminal is connected to one of the magnet disk or the conductor disk of the permanent magnet torque limiter to be tested;

[0045] The first torque sensor output shaft of the torque sensor 3 is connected to the other of the magnet disk or the conductor disk of the permanent magnet torque limiter to be tested;

[0046] The brake assembly 4 includes a movable end and a fixed end, and the fixed end is connected to the torque sensor; wherein,

[0047] The variable speed motor 1 is used to drive the permanent magnet torque limiter 2 to be tested to work;

[0048] The movable end of the brake assembly 4 is used to cooperate with the fixed end to provide resistance for the magnetic disk or conductor disk connected to the torque sensor of the permanent magnetic torque limiter to be tested.

[0049] The device for measuring the torque value of the permanent magnet torque limiter during soft start of the present application provides a device that can obtain and display the output torque value of the permanent magnet torque limiter in real time during the motor speed change process, thereby solving the problem in the prior art that it is impossible to observe the change of the output torque value of the permanent magnet torque limiter in real time during the motor speed change process.

[0050] In this embodiment, the device for measuring the torque value of the permanent magnet torque limiter during soft start further includes:

[0051] A support plate 5 , on which one or more of the variable speed motor 1 , the torque sensor 3 and the brake assembly 4 are arranged.

[0052] By providing the support plate, on the one hand, it can prevent the problem that each device is uneven if placed on the ground; on the other hand, it also realizes the pre-assembly of each device. In actual use, it can be moved by lifting the support plate without the need for on-site assembly.

[0053] In this embodiment, the device for measuring the torque value of the permanent magnet torque limiter during soft start further includes:

[0054] A control box 6, wherein the control box 6 is arranged on another surface of the support plate 5;

[0055] A controller 6 is provided in the control box, and is connected to the variable speed motor and the torque sensor, and is used for controlling the operation of the variable speed motor and receiving the torque information transmitted by the torque sensor.

[0056] In this embodiment, the control box helps to support the entire device through its structure on the one hand, and on the other hand, various circuit components can be arranged in the control box.

[0057] In this embodiment, the device for measuring the torque value of the permanent magnet torque limiter during soft start further includes a display 7, which is arranged on the peripheral side wall of the control box. The display is connected to the controller and is used to display the torque information transmitted by the torque sensor.

[0058] By setting up a display, the torque information transmitted by the torque sensor obtained by the controller and the motor condition transmitted to the controller when the motor is in use can be displayed in real time.

[0059] In this embodiment, the brake assembly 4 includes a single conductor disk 41, a single magnet disk 42 and a drive device 43, wherein:

[0060] The single conductor disc 41 serves as the fixed end;

[0061] The single magnetic disk 42 serves as the movable end;

[0062] The driving device 43 is connected to the single magnet disk 42 and is used to drive the single magnet disk 42 to approach or move away from the single conductor disk 41 .

[0063] In this embodiment, the driving device can be a manually controlled mechanical device or an electrically or hydraulically driven mechanical device. For example, it can be an electric telescopic rod, wherein the telescopic end of the electric telescopic rod is connected to a single magnetic disk. For another example, the driving device can also be a hydraulic cylinder, wherein the telescopic end of the hydraulic cylinder is connected to a single magnetic disk.

[0064] It is understandable that the driving device can also be a gear-connecting rod mechanism, which drives the gear to rotate through a control rod, so that the gear drives the connecting rod to move, and one end of the connecting rod is connected to the single magnet disk, so as to achieve the single magnet disk approaching or moving away from the single conductor disk.

[0065] In this embodiment, the device for measuring the torque value of the permanent magnet torque limiter during soft start further includes an explosion-proof shell 8, which is installed on a surface of the support plate 5 on which the variable speed motor 1 is provided, and the permanent magnet torque limiter 2 to be tested and the movable end and the fixed end of the brake assembly 4 are all arranged in the explosion-proof shell 8.

[0066] By setting up an explosion-proof shell, it is possible to prevent the permanent magnetic torque limiter to be tested from being damaged and causing parts to fall out, or the single conductor disk or single magnet disk from being damaged and causing parts to fall out during the test.

[0067] In this embodiment, a plurality of drive device mounting holes are provided on the support plate;

[0068] The driving device can be connected to the support plate through one or more driving device mounting holes; wherein,

[0069] When the driving device is installed in different driving device installation holes, the maximum distance between the fixed end and the movable end is different.

[0070] By installing it in different drive device installation holes, the initial distance between the single magnet disk and the single conductor disk can be adjusted.

[0071] In this embodiment, the variable speed motor includes a support body 11 and a motor body 12, wherein:

[0072] The support body is connected to the support plate;

[0073] The motor body is mounted on the support body.

[0074] In this embodiment, the explosion-proof housing is provided with a first hole and a second hole;

[0075] The motor body is arranged outside the explosion-proof shell, and the variable speed motor output shaft of the motor body passes through the first hole and is connected to the permanent magnetic torque limiter to be tested;

[0076] The driving device is arranged outside the explosion-proof shell, and a driving device connecting shaft of the driving device used for connecting with the single magnet disk passes through the second hole and is connected with the single magnet disk.

[0077] In this embodiment, the conductor disc is connected to the output shaft of the variable speed motor.

[0078] The working method of the present application is further described in detail below by way of examples. It should be understood that the examples do not constitute any limitation to the present application.

[0079] Step 1: When the variable speed motor is powered on and started, the speed can be adjusted through the control of the controller, and the speed value can be observed through the display;

[0080] Step 2: When the brake assembly is in the disengaged state (i.e., no resistance is provided), the permanent magnet torque limiter to be tested will quickly rotate after the motor is started. When the brake assembly is in the disengaged state, which is equivalent to a no-load state, the torque output value on the display can be observed;

[0081] See also Figure 3 , Step 3: Drive the driving device to bring the single magnetic disk and the single conductor disk closer together. Due to the effect of magnetic force, the single conductor disk will slowly decelerate. At the same time, the magnetic disk of the permanent magnetic torque limiter to be tested connected to the other end of the torque sensor will decelerate at the same frequency, but the motor speed remains unchanged. When the slip difference between the permanent magnetic torque limiter magnetic disk and the conductor disk becomes larger and larger, the magnetic disk moves inward and disengages from the conductor disk until it stops rotating.

[0082] During this process, the torque value output by the permanent magnet torque limiter to be tested can be observed through the display.

[0083] In this embodiment,

[0084] The connection mode of the permanent magnetic torque limiter model is: the conductor disk is rigidly connected to the variable speed motor; the magnet disk is rigidly connected to the torque sensor. Specifically, the output shafts at both ends of the torque sensor are the same, one side is connected to the magnet disk of the permanent magnetic torque limiter model, and the other side is connected to the single conductor disk of the brake device.

[0085] In addition, it is obvious that the word "comprising" does not exclude other units or steps. Multiple units, modules or devices stated in the device claim can also be implemented by one unit or the overall device through software or hardware.

[0086] Although the utility model has been described in detail above with general descriptions and specific implementation schemes, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A device for measuring the torque value of a permanent magnet torque limiter during soft start, characterized in that: The device for measuring the torque value of the permanent magnetic torque limiter during soft start comprises: A variable speed motor (1), wherein the variable speed motor (1) has a variable speed motor output end, wherein the variable speed motor output end is connected to one of the magnet disk (21) or the conductor disk (22) of the permanent magnet torque limiter (2) to be tested; A torque sensor (3), wherein a first torque sensor output shaft of the torque sensor (3) is connected to the other of the magnet disk (21) or the conductor disk (22) of the permanent magnet torque limiter (2) to be tested; A brake assembly (4), the brake assembly (4) comprising a movable end and a fixed end, the fixed end being connected to the torque sensor; wherein: The variable speed motor is used to drive the permanent magnet torque limiter to be tested to work; The movable end of the brake assembly is used to cooperate with the fixed end to provide resistance for the magnetic disk or conductor disk of the permanent magnetic torque limiter to be tested that is connected to the torque sensor.

2. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 1, characterized in that: The device for measuring the torque value of the permanent magnetic torque limiter during soft start further comprises: A support plate (5), the variable speed motor (1), the torque sensor (3) and one or more of the brake components are arranged on a surface of the support plate.

3. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 2, characterized in that: The device for measuring the torque value of the permanent magnetic torque limiter during soft start further comprises: A control box (6), the control box (6) being connected to the other surface of the support plate (5); A controller is disposed in the control box and is connected to the variable speed motor and the torque sensor, and is used for controlling the operation of the variable speed motor and receiving torque information transmitted by the torque sensor.

4. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 3, characterized in that: The device for measuring the torque value of the permanent magnetic torque limiter during soft start further comprises: A display (7), wherein the display (7) is arranged on a peripheral side wall of the control box (6), and the display is connected to the controller and is used to display the torque information transmitted by the torque sensor.

5. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 4, characterized in that: The brake assembly (4) comprises: A single conductor disk (41), the single conductor disk (41) serving as the fixed end; A single magnetic disk (42), the single magnetic disk (42) serving as the movable end; A driving device (43) is connected to the single magnet disk (42) and is used to drive the single magnet disk (42) to approach or move away from the single conductor disk (41).

6. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 5, characterized in that: The device for measuring the torque value of the permanent magnetic torque limiter during soft start further comprises: An explosion-proof shell (8) is installed on a surface of the support plate (5) on which the variable speed motor (1) is arranged, and the movable end and the fixed end of the permanent magnet torque limiter (2) to be tested and the brake assembly (4) are all arranged in the explosion-proof shell (8).

7. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 6, characterized in that: The support plate is provided with a plurality of drive device mounting holes; The driving device can be connected to the support plate through one or more driving device mounting holes; wherein, When the driving device is installed in different driving device installation holes, the maximum distance between the fixed end and the movable end is different.

8. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 7, characterized in that: The variable speed motor (1) comprises: A support body (11), wherein the support body (11) is connected to the support plate (5); A motor body (12), wherein the motor body (12) is mounted on the support body (11).

9. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 8, characterized in that: The explosion-proof shell (8) is provided with a first hole and a second hole; The motor body (12) is arranged outside the explosion-proof shell, and the variable speed motor output shaft of the motor body passes through the first hole and is connected to the permanent magnet torque limiter (2) to be tested; The driving device (43) is arranged outside the explosion-proof shell (8), and a driving device connecting shaft of the driving device (43) for connecting with the single magnet disk (42) passes through the second hole and is connected with the single magnet disk (42).

10. The device for measuring the torque value of a permanent magnetic torque limiter during soft start as claimed in claim 9, characterized in that: The conductor disc (22) is connected to the output shaft of the variable speed motor.

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