Emergency speed reducing mechanism of alternating current motor

Abstract

The utility model discloses an emergency speed reducing mechanism of an alternating current motor, which relates to the technical field of motors and comprises a motor body, a mounting shell is welded and fixed on one side of the motor body, and a speed reducing assembly is arranged on the mounting shell; the speed reduction assembly comprises a mounting plate, a moving frame, a moving rod, a spring, a fixed plate and a plurality of friction plates, the mounting plate is arranged on two sides of the mounting shell, the moving frame is fixedly mounted on one side of the mounting plate, the moving rod is slidably mounted on the inner wall of the moving frame, the spring is fixedly mounted on one side of the inner wall of the moving frame, and the other end of the spring is fixedly mounted at one end of the moving rod; the fixed plate is fixedly mounted at the other end of the moving rod; the friction plates are arranged on one side of the fixed plate; in the technical scheme provided by the utility model, the mounting plate and the movable frame are mounted on the mounting shell in a drawing and inserting manner and are fixed through the screws, so that the movable frame is convenient to disassemble, the friction plate is mounted on one side of the movable frame, the friction plate is convenient to draw out for replacement, and the emergency speed reducing mechanism is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an emergency deceleration mechanism for an AC motor. Background Art

[0002] An AC motor is a device that converts AC electrical energy into mechanical energy. When an AC motor rotates at a high speed, due to inertia, it will rotate for a while and then stop, and the shaft body cannot stop rotating immediately. When there is a problem with the AC motor, an emergency deceleration mechanism is needed to accelerate the stopping speed of the motor shaft body. Currently, a friction plate can be set at the shaft body of the motor output end, and the shaft body is clamped by the friction plate to increase the resistance, so that the motor shaft body stops rotating. However, the friction plate in the emergency deceleration mechanism is easily worn, inconvenient to disassemble and assemble, and troublesome to replace. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an emergency deceleration mechanism for an AC motor to solve the problems that the friction plate in the existing emergency deceleration mechanism is easily worn, inconvenient to disassemble and assemble, and troublesome to replace.

[0004] In view of this, the utility model provides an emergency deceleration mechanism for an AC motor, which includes a motor body. An installation shell is welded and fixed on one side of the motor body, and a deceleration component is arranged on the installation shell.

[0005] The deceleration component includes an installation plate, a moving frame, a moving rod, a spring, a fixing plate and a plurality of friction plates. The installation plate is arranged on both sides of the installation shell. The moving frame is fixedly installed on one side of the installation plate. The moving rod is slidably installed on the inner wall of the moving frame. The spring is fixedly installed on one side of the inner wall of the moving frame, and the other end of the spring is fixedly installed on one end of the moving rod. The fixing plate is fixedly installed on the other end of the moving rod, and a plurality of the friction plates are arranged on one side of the fixing plate.

[0006] Optionally, moving holes are opened on both sides of the installation shell, the moving frame is slidably installed on the inner wall of the moving hole, and the installation plate is fixedly installed on both sides of the installation shell by screws.

[0007] Optionally, a plurality of fixing grooves are opened on one side of the fixing plate, a second adsorbent is fixedly installed on the groove wall of the fixing groove, a first adsorbent is fixedly installed on one side of the friction plate, and the first adsorbent and the second adsorbent are adsorbed to each other.

[0008] Optionally, a cylinder is fixedly installed on the top end of the installation shell, the output end of the cylinder extends into the installation shell, a rotating frame is fixedly installed at the output end of the cylinder, and pressing rods are rotatably installed on both sides of the rotating frame, and the pressing rods are L-shaped.

[0009] Optionally, two mounting shafts are fixedly installed on one side of the inner wall of the mounting shell, the middle part of the pressing rod is rotatably installed on the outer wall of the mounting shaft, and one side of the pressing rod is located on one side of the corresponding fixing plate.

[0010] Optionally, a coupling is fixedly installed at the output end of the motor body, a deceleration rod is fixedly installed at one end of the coupling, and the friction plates are located on both sides of the deceleration rod.

[0011] Optionally, a lid is fixedly installed at one end of the mounting shell through screws, and one end of the deceleration rod passes through the lid and extends to the outside of the mounting shell.

[0012] It can be seen from the above technical solutions that the embodiments of the present utility model have the following advantages:

[0013] 1. For the emergency deceleration mechanism of an AC motor of the present utility model, the mounting plate and the moving frame are installed on the mounting shell by means of insertion, and are fixed by screws, so that the moving frame is convenient to disassemble. The friction plate is installed on one side of the moving frame, which is convenient to pull out the friction plate for replacement, making the emergency deceleration mechanism more convenient to use.

[0014] 2. For the emergency deceleration mechanism of an AC motor of the present utility model, by installing a deceleration rod at the output end of the motor body, the outer wall of the deceleration rod can be polished into a frosted surface, which can increase the friction between the friction plate and the surface of the deceleration rod. Moreover, the deceleration rod can be removed for replacement after removing the lid, which is convenient to replace the deceleration rod with excessive wear.

[0015] These features and advantages of the present utility model will be detailedly disclosed in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further describes the present utility model with reference to the drawings:

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is an internal view of the mounting shell of the present utility model;

[0019] Figure 3 is of the present utility model Figure 2 The enlarged view at A in;

[0020] Figure 4 is the installation diagram of the deceleration rod of the present utility model.

[0021] Description of the reference numerals: 1, motor body; 2, mounting shell; 3, lid; 4, cylinder; 5, rotating frame; 6, pressing rod; 7, mounting shaft; 8, mounting plate; 9, moving frame; 10, moving rod; 11, spring; 12, fixing plate; 13, fixing groove; 14, friction plate; 15, first adsorbent; 16, second adsorbent; 17, coupling; 18, decelerating rod. Detailed implementation manners

[0022] The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the following embodiments are only the preferred embodiments of the present utility model and not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present utility model.

[0023] The following specifically describes an emergency deceleration mechanism of an AC motor according to an embodiment of the present utility model with reference to the accompanying drawings.

[0024] Embodiment 1

[0025] For ease of understanding, please refer to Figures 1 to 4 , an embodiment of an emergency deceleration mechanism of an AC motor provided by the present utility model, includes a motor body 1. A mounting shell 2 is welded and fixed to one side of the motor body 1, and a deceleration assembly is arranged on the mounting shell 2; the deceleration assembly includes a mounting plate 8, a moving frame 9, a moving rod 10, a spring 11, a fixing plate 12 and a plurality of friction plates 14. The mounting plate 8 is arranged on both sides of the mounting shell 2. The moving frame 9 is fixedly installed on one side of the mounting plate 8. The moving rod 10 is slidably installed on the inner wall of the moving frame 9. One side of the inner wall of the moving frame 9 is fixedly installed with the spring 11, and the other end of the spring 11 is fixedly installed at one end of the moving rod 10. The fixing plate 12 is fixedly installed at the other end of the moving rod 10, and a plurality of friction plates 14 are arranged on one side of the fixing plate 12.

[0026] It should be noted that the mounting plate 8 and the moving frame 9 are installed on the mounting shell 2 by a plugging method and fixed by screws, so that the moving frame 9 is convenient to disassemble. The friction plate 14 is installed on one side of the moving frame 9, so that the friction plate 14 can be easily pulled out for replacement, making the emergency deceleration mechanism more convenient to use; by providing the moving frame 9 and the moving rod 10, the fixing plate 12 and the friction plate 14 can be moved, and the friction plate 14 is installed by providing the mounting plate 8.

[0027] In some embodiments, such as Figure 2As shown in the figure, moving holes are provided on both sides of the mounting shell 2. The moving frame 9 is slidably mounted on the inner wall of the moving hole. The mounting plate 8 is fixedly mounted on both sides of the mounting shell 2 by screws. A number of fixing grooves 13 are provided on one side of the fixing plate 12. A second adsorbent 16 is fixedly mounted on the groove wall of the fixing groove 13. A first adsorbent 15 is fixedly mounted on one side of the friction plate 14. The first adsorbent 15 and the second adsorbent 16 are adsorbed to each other. A cylinder 4 is fixedly mounted on the top of the mounting shell 2. The output end of the cylinder 4 extends into the mounting shell 2. The output end of the cylinder 4 is fixedly mounted with a rotating frame 5. Rotating rods 6 are rotatably mounted on both sides of the rotating frame 5. The rotating rods 6 are L-shaped.

[0028] It should be noted that the moving frame 9 passes through the moving holes on both sides of the mounting shell 2 and inserts into the mounting shell 2. At this time, the friction plate 14 is located on both sides of the deceleration rod 18. When the cylinder 4 starts and its output end retracts, it drives the moving frame 9 to move upward. The moving frame 9 pulls one end of the rotating rod 6 to move upward. And the rotating rod 6 rotates along the circular mounting shaft 7 at the fold. The other end of the rotating rod 6 pushes the fixing plate 12 to move, so that the mounting plate 8 drives the friction plate 14 thereon to clamp on the outer wall of the deceleration rod 18, and decelerates the shaft body of the output end of the motor body 1.

[0029] In some embodiments, as Figure 2 、 Figure 3 shown, two mounting shafts 7 are fixedly mounted on one side of the inner wall of the mounting shell 2. The middle part of the rotating rod 6 is rotatably mounted on the outer wall of the mounting shaft 7. One side of the rotating rod 6 is located on one side of the corresponding fixing plate 12.

[0030] It should be noted that the first adsorbent 15 and the second adsorbent 16 can be selected as magnets. The first adsorbent 15 and the second adsorbent 16 are adsorbed to each other, which is convenient for installing the friction plate 14 in the fixing groove 13 on the fixing plate 12.

[0031] Embodiment 2

[0032] In some embodiments, as Figure 4 shown, a coupling 17 is fixedly mounted on the output end of the motor body 1. One end of the coupling 17 is fixedly mounted with a deceleration rod 18. The friction plate 14 is located on both sides of the deceleration rod 18. One end of the mounting shell 2 is fixedly mounted with a cover 3 by screws. One end of the deceleration rod 18 passes through the cover 3 and extends to the outside of the mounting shell 2.

[0033] It should be noted that by installing the deceleration rod 18 on the output end of the motor body 1, the outer wall of the deceleration rod 18 can be polished into a matte surface, which can increase the friction between the friction plate 14 and the surface of the deceleration rod 18. And the deceleration rod 18 can be removed and replaced after removing the cover 3, which is convenient for replacing the deceleration rod 18 with excessive wear.

[0034] The cylinder 4 in the present utility model is a well-known component and will not be elaborated here.

[0035] Working principle: When using the emergency deceleration mechanism, the moving frame 9 passes through the moving holes on both sides of the mounting shell 2 and inserts into the interior of the mounting shell 2. At this time, the friction plates 14 are located on both sides of the deceleration rod 18. The output end of the cylinder 4 retracts, driving the moving frame 9 to move upward. The moving frame 9 pulls one end of the pressure rod 6 upward, and the pressure rod 6 rotates in a circular motion along the mounting shaft 7 at the corner, causing the other end of the pressure rod 6 to push the fixed plate 12 to move, so that the mounting plate 8 drives the friction plates 14 thereon to clamp on the outer wall of the deceleration rod 18, thereby decelerating the shaft body at the output end of the motor body 1.

[0036] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An emergency deceleration mechanism for an AC motor, characterized in that: It includes a motor body (1), and an installation shell (2) is fixedly welded to one side of the motor body (1), and a speed reduction assembly is arranged on the installation shell (2); The speed reduction assembly includes a mounting plate (8), a moving frame (9), a moving rod (10), a spring (11), a fixing plate (12) and a plurality of friction plates (14). The mounting plate (8) is arranged on both sides of the installation shell (2). The moving frame (9) is fixedly installed on one side of the mounting plate (8). The moving rod (10) is slidably installed on the inner wall of the moving frame (9). The spring (11) is fixedly installed on one side of the inner wall of the moving frame (9), and the other end of the spring (11) is fixedly installed on one end of the moving rod (10). The fixing plate (12) is fixedly installed on the other end of the moving rod (10), and a plurality of the friction plates (14) are arranged on one side of the fixing plate (12).

2. The emergency deceleration mechanism of an AC motor according to claim 1, characterized in that: Moving holes are formed on both sides of the installation shell (2), and the moving frame (9) is slidably installed on the inner wall of the moving holes. The mounting plate (8) is fixedly installed on both sides of the installation shell (2) by screws.

3. An emergency deceleration mechanism for an AC motor according to claim 1, characterized in that: A plurality of fixing grooves (13) are formed on one side of the fixing plate (12), a second adsorbent (16) is fixedly installed on the groove wall of the fixing grooves (13), a first adsorbent (15) is fixedly installed on one side of the friction plate (14), and the first adsorbent (15) and the second adsorbent (16) are adsorbed to each other.

4. The emergency deceleration mechanism of an AC motor according to claim 1, characterized in that: A cylinder (4) is fixedly installed on the top end of the installation shell (2). The output end of the cylinder (4) extends into the installation shell (2). A rotating frame (5) is fixedly installed at the output end of the cylinder (4). Pressing rods (6) are rotatably installed on both sides of the rotating frame (5), and the pressing rods (6) are L-shaped.

5. The emergency deceleration mechanism of an AC motor according to claim 4, characterized in that: Two mounting shafts (7) are fixedly installed on one side of the inner wall of the installation shell (2). The middle part of the pressing rod (6) is rotatably installed on the outer wall of the mounting shaft (7), and one side of the pressing rod (6) is located on one side of the corresponding fixing plate (12).

6. The emergency deceleration mechanism of an AC motor according to claim 1, characterized in that: A coupling (17) is fixedly installed at the output end of the motor body (1), a speed reduction rod (18) is fixedly installed at one end of the coupling (17), and the friction plates (14) are located on both sides of the speed reduction rod (18).

7. The emergency deceleration mechanism of an AC motor according to claim 6, characterized in that: A cover (3) is fixedly installed at one end of the installation shell (2) by screws, and one end of the speed reduction rod (18) passes through the cover (3) and extends to the outside of the installation shell (2).

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