Explosion-proof motor rotor

Abstract

The utility model belongs to the technical field of motor rotors, and particularly relates to an explosion-proof motor rotor, which comprises a rotor shaft body, a mounting cavity is arranged in the rotor shaft body, an adjusting mechanism is arranged in the mounting cavity, the adjusting mechanism comprises a screw rod, one end of the screw rod is rotatably connected with the inner wall of the mounting cavity through a bearing, and the surface of the screw rod is sleeved with a mounting pipe in a threaded manner. A temperature sensor is fixedly connected to the outer surface of the mounting pipe, and a limiting groove is formed in the surface of the inner side wall of the mounting cavity. According to the explosion-proof motor rotor, the installation adjusting mechanism is arranged in the rotor shaft body, a screw rod and an installation pipe in the adjusting mechanism are used for driving a temperature sensor, the screw rod is rotated, so that the installation pipe drives the temperature sensor to move on the surface of the screw rod, and then the installation position of the temperature sensor in the rotor shaft body is changed; therefore, the position of the temperature sensor can be accurately installed according to the specification and the application environment of the rotor shaft body, so that the temperature in the motor rotor can be accurately measured.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotors, in particular to an explosion-proof motor rotor. Background Technique

[0002] An explosion-proof motor rotor (application number: 202322033714.X) disclosed on the Chinese patent website, although it solves the technical problem that the traditional temperature detection method is to set a temperature sensor between the stator and the rotor of the explosion-proof motor or on the rotor, but it cannot detect the temperature at the center of the rotor and is easily affected by the magnetic field, resulting in inaccurate detection. However, there are still the following problems:

[0003] During actual use, due to the fixed installation position of the temperature sensor and further reinforcement by filling insulating sealant, installing the temperature sensor at a fixed position may not provide the best temperature measurement in all cases. The temperatures at different parts of the rotor shaft may vary, and the fixed position may not fully reflect the temperature distribution of the entire rotor shaft, and it will also lead to low measurement accuracy, especially if this position is affected under certain operating conditions or fails to make good contact with the surface of the rotor shaft, thus making it inconvenient to use. Content of the Utility Model

[0004] Based on the existing technical problems, the utility model provides an explosion-proof motor rotor.

[0005] An explosion-proof motor rotor provided by the utility model includes a rotor shaft body. An installation cavity is opened inside the rotor shaft body, and an adjustment mechanism is installed inside the installation cavity. The adjustment mechanism includes a screw rod. One end of the screw rod is rotationally connected to the inner wall of the installation cavity through a bearing. An installation pipe is threadedly sleeved on the surface of the screw rod. A temperature sensor is fixedly connected to the outer surface of the installation pipe. A limiting groove is opened on the inner side wall surface of the installation cavity, and the inner wall of the limiting groove is slidably connected to the outer surface of the temperature sensor. While using the limiting groove to prevent the installation pipe from rotating through the temperature sensor, the inner wall of the limiting groove limits the temperature sensor to avoid large vibrations during use. A shock pad can also be installed on the inner wall of the limiting groove to further reduce vibrations.

[0006] Preferably, one end of the screw rod is fixedly connected to a driving shaft. One end of the driving shaft is rotationally connected to the inner wall of the installation cavity through a bearing. A connecting block is fixedly connected to the outer side wall surface of one end of the driving shaft. A plurality of the connecting blocks are annularly arranged on the surface of the driving shaft with the axis of the driving shaft as the array center.

[0007] Through the above technical solution, the driving shaft is used to drive the screw rod to rotate, so as to facilitate driving the installation pipe on the surface of the screw rod.

[0008] Preferably, a driving block is slidably sleeved on the outer surface of the connecting block, a thrust spring is fixedly connected to the inner wall of the driving block, and the other end of the thrust spring is fixedly connected to the surface of the connecting block.

[0009] Through the above technical solution, the driving block is connected to the surface of the connecting block through the thrust spring, so that the connecting block can be driven by the driving block.

[0010] Preferably, a movable groove is provided on the outer surface of the rotor shaft body, a deflection groove is provided on the inner wall surface of the movable groove, and the inner wall of the movable groove is connected to the interior of the installation cavity through the deflection groove.

[0011] Through the above technical solution, the driving block is exposed outward only through the deflection groove, thereby facilitating the driving block to be moved.

[0012] Preferably, the outer surface of the driving block is slidably connected to the inner wall of the deflection groove, and the inner wall of the movable groove is slidably sleeved with a driving ring.

[0013] Preferably, a paddle is fixedly connected to the inner wall of the driving ring, and a plurality of the paddles are distributed in a ring array on the inner wall of the driving ring with the axis of the driving ring as the array center.

[0014] Through the above technical solution, the driving block is exposed outward through the deflection groove, so that it is convenient for the paddle to push the surface of the driving block.

[0015] The beneficial effects of the present invention are:

[0016] By setting an installation adjustment mechanism inside the rotor shaft, the temperature sensor is driven by the screw and the installation tube in the adjustment mechanism. By rotating the screw, the installation tube drives the temperature sensor to move on the surface of the screw, thereby changing the installation position of the temperature sensor in the rotor shaft, making it convenient to accurately install the position of the temperature sensor according to the specifications of the rotor shaft and the application environment, thereby facilitating accurate measurement of the temperature inside the motor rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of an explosion-proof motor rotor proposed by the utility model;

[0018] Figure 2 This is a cross-sectional view of the rotor shaft structure of an explosion-proof motor rotor proposed by the utility model;

[0019] Figure 3 This is a three-dimensional diagram of the drive shaft structure of an explosion-proof motor rotor proposed by the utility model;

[0020] Figure 4 This is an exploded diagram of the thrust spring structure of an explosion-proof motor rotor proposed by the utility model;

[0021] Figure 5 A three-dimensional view of the drive ring structure of an explosion-proof motor rotor proposed by the present utility model.

[0022] In the figure: 1, rotor shaft body; 11, limit groove; 2, screw; 21, mounting tube; 22, temperature sensor; 23, drive shaft; 24, connecting block; 25, drive block; 26, thrust spring; 3, movable groove; 4, deflection groove; 5, drive ring; 6, paddle. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0024] Referring to Figures 1 - 5 , an explosion-proof motor rotor includes a rotor shaft body 1. An installation cavity is provided inside the rotor shaft body 1. An adjustment mechanism is installed inside the installation cavity. The adjustment mechanism includes a screw 2. One end of the screw 2 is rotatably connected to the inner wall of the installation cavity through a bearing. An installation tube 21 is threadedly sleeved on the surface of the screw 2. A temperature sensor 22 is fixedly connected to the outer surface of the installation tube 21. A limit groove 11 is provided on the inner side wall surface of the installation cavity. The inner wall of the limit groove 11 is slidably connected to the outer surface of the temperature sensor 22. While using the limit groove 11 to prevent the installation tube 21 from rotating through the temperature sensor 22, the inner wall of the limit groove 11 limits the temperature sensor 22 to avoid large vibrations during use. A shock-absorbing pad can also be installed on the inner wall of the limit groove 11 to further reduce vibrations.

[0025] In order to drive the temperature sensor 22, a drive shaft 23 is fixedly connected to one end of the screw 2. One end of the drive shaft 23 is rotatably connected to the inner wall of the installation cavity through a bearing. A connecting block 24 is fixedly connected to the outer side wall surface of one end of the drive shaft 23. A plurality of connecting blocks 24 are annularly arranged on the surface of the drive shaft 23 with the axis of the drive shaft 23 as the array center. By driving the screw 2 through the drive shaft 23, it is convenient to drive the installation tube 21 on the surface of the screw 2. A drive block 25 is slidably sleeved on the outer surface of the connecting block 24. A thrust spring 26 is fixedly connected to the inner wall of the drive block 25. The other end of the thrust spring 26 is fixedly connected to the surface of the connecting block 24. By connecting the drive block 25 to the connecting block 24 through the thrust spring 26, it is convenient to drive the connecting block 24 through the drive block 25.

[0026] By means of an installation and adjustment mechanism disposed inside the rotor shaft 1, the temperature sensor 22 is driven by the screw 2 and the installation tube 21 in the adjustment mechanism. By rotating the screw 2, the installation tube 21 drives the temperature sensor 22 to move on the surface of the screw 2, thereby changing the installation position of the temperature sensor 22 in the rotor shaft 1, making it convenient to accurately install the position of the temperature sensor 22 according to the specifications and application environment of the rotor shaft 1, thereby facilitating accurate measurement of the temperature inside the motor rotor.

[0027] In order to drive the screw 2, a movable groove 3 is opened on the outer surface of the rotor shaft 1, and a deflection groove 4 is opened on the inner wall surface of the movable groove 3. The inner wall of the movable groove 3 is connected with the interior of the installation cavity through the deflection groove 4. The driving block 25 is exposed to the outside only through the deflection groove 4, so as to facilitate the driving block 25 to be moved. The outer surface of the driving block 25 is slidingly connected to the inner wall of the deflection groove 4, and the inner wall of the movable groove 3 is slidingly sleeved with a driving ring 5. The inner wall of the driving ring 5 is fixedly connected with a paddle 6. A plurality of paddles 6 are distributed in a circular array on the inner side wall of the driving ring 5 with the axis of the driving ring 5 as the array center. The driving block 25 is exposed to the outside through the deflection groove 4, so as to facilitate the paddle 6 to push the surface of the driving block 25.

[0028] Working principle:

[0029] When in use, the driving ring 5 is moved to cover the surface of the deflection slot 4, and the driving ring 5 is rotated. The paddle 6 inside the driving ring 5 drives the driving block 25 extending out of the deflection slot 4, and the driving block 25 is pressed toward the other end of the deflection slot 4. The thrust spring 26 is compressed, and the driving block 25 is sleeved onto the surface of the connecting block 24. At the same time, the driving block 25 is rotated by the thrust spring 26 and the connecting block 24 electric drive shaft 23, and the driving shaft 23 drives the subsequent driving blocks 25 to sequentially pass through the deflection slot 4 and be exposed;

[0030] The driving shaft 23 drives the screw 2 to rotate, and the mounting tube 21 slides on the surface of the screw 2 under the action of the screw 2 and the temperature sensor 22 , and covers the position of the temperature sensor 22 .

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An explosion-proof motor rotor, comprising a rotor shaft body (1), characterized in that: An installation cavity is formed inside the rotor shaft body (1), and an adjusting mechanism is installed inside the installation cavity. The adjusting mechanism includes a screw rod (2). One end of the screw rod (2) is rotatably connected to the inner wall of the installation cavity through a bearing. An installation tube (21) is threadedly sleeved on the surface of the screw rod (2). A temperature sensor (22) is fixedly connected to the outer surface of the installation tube (21). A limiting groove (11) is formed on the surface of the inner side wall of the installation cavity, and the inner wall of the limiting groove (11) is slidably connected to the outer surface of the temperature sensor (22).

2. An explosion-proof motor rotor according to claim 1, characterized in that: One end of the screw rod (2) is fixedly connected to a driving shaft (23). One end of the driving shaft (23) is rotatably connected to the inner wall of the installation cavity through a bearing. A connecting block (24) is fixedly connected to the outer side wall surface of one end of the driving shaft (23). A plurality of the connecting blocks (24) are annularly arrayed on the surface of the driving shaft (23) with the axis of the driving shaft (23) as the array center.

3. The explosion-proof motor rotor according to claim 2, characterized in that: A driving block (25) is slidably sleeved on the outer surface of the connecting block (24). A thrust spring (26) is fixedly connected to the inner wall of the driving block (25), and the other end of the thrust spring (26) is fixedly connected to the surface of the connecting block (24).

4. The explosion-proof motor rotor according to claim 3, characterized in that: An activity groove (3) is formed on the outer surface of the rotor shaft body (1). A deflection groove (4) is formed on the surface of the inner wall of the activity groove (3). The inner wall of the activity groove (3) is communicated with the inside of the installation cavity through the deflection groove (4).

5. The explosion-proof motor rotor according to claim 4, characterized in that: The outer surface of the driving block (25) is slidably connected to the inner wall of the deflection groove (4). A driving ring (5) is slidably sleeved on the inner wall of the activity groove (3).

6. The explosion-proof motor rotor according to claim 5, wherein: A dial (6) is fixedly connected to the inner wall of the driving ring (5). A plurality of the dials (6) are annularly arrayed on the inner side wall of the driving ring (5) with the axis of the driving ring (5) as the array center.

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