Motor shaft steering observation structure

Abstract

The utility model discloses a motor shaft steering observation structure, which comprises a motor body, a rotating shaft and a fan cover, the rotating shaft and the fan cover are arranged on the motor body, a direction piece is rotatably arranged on the fan cover, a connecting piece is arranged between the direction piece and the rotating shaft, and the rotating shaft rotates to drive the direction piece to rotate through the connecting piece. The rotating shaft rotates to drive the direction piece to rotate, whether the rotating shaft of the motor rotates correctly or not can be directly observed from the outside, the fan cover is prevented from being disassembled and assembled, and convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor testing technology, specifically a motor shaft rotation observation structure. Background Technology

[0002] Three-phase motors have been widely used in industrial and agricultural production. In practical use, the correct phase sequence of a three-phase motor greatly affects its normal operation. When a three-phase motor needs to be connected to the grid, its phase sequence must be ensured after installation; otherwise, the motor may malfunction or even burn out. Currently, widely used phase sequence tables can only determine the phase sequence after the motor has been running, which is inconvenient. For three-phase asynchronous motors, the direction of rotation usually needs to be determined before wiring. Currently, after motor assembly, the impeller is typically used to determine the motor's direction of rotation and check for correct wiring. However, every time the motor is installed on mobile equipment and the wiring needs to be checked, the fan cover must be removed to observe the impeller's direction of rotation, which is inconvenient, especially when the motor is installed in a confined space. Utility Model Content

[0003] The purpose of this invention is to provide a motor shaft rotation observation structure to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a motor shaft steering observation structure, including a motor body, and a rotating shaft and a fan cover disposed on the motor body. A directional component is rotatably disposed on the fan cover, and a connecting component is disposed between the directional component and the rotating shaft. The rotation of the rotating shaft drives the directional component to rotate through the connecting component.

[0005] Preferably, the connecting member is a bolt, the directional member has a stepped hole in the middle, the end of the rotating shaft has a connecting hole, and the bolt passes through the stepped hole and is threadedly connected to the connecting hole.

[0006] Preferably, the wind shield has a viewing hole in the middle for the directional component to extend out, the inner wall of the viewing hole has an annular groove, and the outer wall of the directional component has an annular plate that is rotatably connected to the annular groove.

[0007] Preferably, the connector includes a rod and a spring. The end of the rotating shaft is provided with a socket for inserting the rod. The spring is fixed to the bottom of the socket. The other end of the spring is fixedly connected to the rod. The end of the rod away from the spring is provided with a pressure cap. The outer wall of the rod is provided with a protrusion. The inner wall of the socket is provided with a partial spiral groove for the protrusion to slide.

[0008] Preferably, the bottom of the socket is provided with a groove, and a movable plate is rotatably provided in the groove, with the end of the spring away from the rod fixed to the movable plate.

[0009] Preferably, the directional component is an annular sleeve, and the annular sleeve has multiple sets of arc-shaped protrusions at one end outside the wind cover. The arc-shaped protrusions gradually increase in height from one end to the other end, and the multiple sets of arc-shaped protrusions are connected end to end to form an annular structure.

[0010] Preferably, the annular sleeve has a rotating mark protrusion at one end outside the wind cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By rotating the shaft, the directional component can be rotated, allowing direct external observation of whether the motor shaft is rotating in the correct direction, avoiding the need to disassemble the fan cover and improving convenience;

[0013] The connector uses a rod and spring structure to press the directional component, and a protrusion with a local arc-shaped groove on the inner wall of the insertion hole is set on the rod. After the shaft rotates, the rod can be moved outward a certain distance by centrifugal force, avoiding continuous rotation of the directional component and making it easier to observe the rotation direction of the directional component. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0016] Figure 2 This is an exploded view of the overall structure of Embodiment 1;

[0017] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2;

[0018] Figure 4 yes Figure 3 An enlarged schematic diagram of part A in the middle;

[0019] Figure 5 yes Figure 3 Enlarged schematic diagram of part B.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Motor body; 2. Shaft; 3. Fan; 4. Fan cover; 5. Directional component; 6. Bolt; 7. Stepped hole; 8. Connecting hole; 9. Visible hole; 10. Annular groove; 11. Annular plate; 12. Rod; 13. Spring; 14. Insertion hole; 15. Pressure cap; 16. Partial spiral groove; 17. Protrusion; 18. Groove; 19. Movable plate; 20. Arc-shaped boss; 21. Rotating mark protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-2 The present invention provides a first embodiment:

[0024] A motor shaft rotation observation structure includes a motor body 1 and a rotating shaft 2 disposed inside the motor body 1. A fan 3 is disposed at one end of the rotating shaft 2, and a fan cover 4 is disposed on one side of the motor body 1. In the prior art, after the three-phase motor is wired, the rotating shaft 2 is rotated by briefly energizing it, and the wiring is judged by the direction of rotation. In order to remove and install the fan cover 4 to observe the rotation direction of the fan 3, a directional component 5 is rotatably disposed on the fan cover 4. A connecting component is provided between the directional component 5 and the rotating shaft 2. The rotation of the rotating shaft 2 drives the directional component 5 to rotate through the connecting component. When the motor starts, the rotating shaft 2 drives the directional component 5 to rotate through the connecting component. Thus, the wiring can be judged by observing the rotation of the directional component 5 from the outside, without the need to remove and install the fan cover 4.

[0025] The connector can be a bolt 6. The directional component 5 has a stepped hole 7 in the middle and a connecting hole 8 at the end of the rotating shaft 2. The bolt 6 passes through the stepped hole 7 and is threaded to the connecting hole 8. The bolt 6 is threaded to the connecting hole 8 and presses the directional component 5 onto the rotating shaft 2, thus realizing the connection between the rotating shaft 2 and the directional component 5. After the rotating shaft 2 rotates, it can drive the directional component 5 to rotate. The operator can intuitively judge whether the wiring is correct by the direction of the directional component 5.

[0026] See Figure 3-5 The present invention provides a second embodiment:

[0027] The difference between this embodiment and embodiment one is that the connection method of fixing the directional component 5 to the rotating shaft 2 by replacing the bolt 6 is to prevent the directional component 5 from loosening and flying out during the continuous rotation of the rotating shaft 2.

[0028] Specifically, the wind shield 4 has a viewing hole 9 in the middle for the directional component 5 to extend out, which facilitates the observation of the directional component 5. The inner wall of the viewing hole 9 has an annular groove 10, and the outer wall of the directional component 5 has an annular plate 11 that is rotatably connected to the annular groove 10. The directional component 5 avoids direct contact with the rotating shaft 2 through the cooperation between the annular plate 11 and the annular groove 10.

[0029] The connector includes a rod 12 and a spring 13. The end of the rotating shaft 2 is provided with a socket 14 for inserting the rod 12. The spring 13 is fixed to the bottom of the socket 14, and the other end of the spring 13 is fixedly connected to the rod 12. The end of the rod 12 away from the spring 13 is provided with a pressure cap 15. The pressure cap 15 is pressed against the stepped hole of the directional component 5 by the tension of the spring 13. The outer wall of the rod 12 is provided with a protrusion 17. The inner wall of the socket 14 is provided with a partial spiral groove 16 for the protrusion 17 to slide. When the rotating shaft 2 rotates, the pressure of the pressure cap 15 will drive the directional component 5 to rotate through friction. As the rotation speed of the rotating shaft 2 increases, the pressure cap 15 will move away from the rotating shaft 2 and no longer press against the directional component 5 under the pushing force of the partial spiral groove 16 on the protrusion 17. This prevents the directional component 5 from continuously rotating rapidly with the rotating shaft 2 and makes it easier for the operator to observe the rotation direction of the directional component 5.

[0030] To prevent the spring 13 from twisting when the shaft 2 and the rod 12 rotate relative to each other, the bottom of the insertion hole 14 is provided with a groove 18, and a movable plate 19 is rotatably provided in the groove 18. The end of the spring 13 away from the rod 12 is fixed to the movable plate 19.

[0031] To make it easier to observe the rotation direction of the directional component 5, the directional component 5 can be set as a ring sleeve or other shaped marking component. The ring sleeve has multiple sets of arc-shaped protrusions 20 at one end outside the wind cover 4. The arc-shaped protrusions 20 gradually increase in height from one end to the other end. The multiple sets of arc-shaped protrusions 20 are connected end to end to form a ring structure. In addition, a rotation mark protrusion 21 is provided at one end of the ring sleeve outside the wind cover 4, which can further facilitate the operator to judge the rotation direction of the directional component 5.

[0032] In this embodiment, when the motor starts and the rotating shaft 2 rotates, the initial low-speed rotation of the rotating shaft 2 will cause the directional component 5 to rotate through the pressing effect of the pressure cap 15 on the directional component 5. After the speed of the rotating shaft 2 increases, the cooperation between the protrusion 17 and the local spiral groove 16 will cause the pressure cap 15 to move outward and break away from the pressure on the stepped hole 7. The rotation speed of the directional component 5 will continue to decrease, making it easier for the operator to observe the rotation direction of the directional component 5, thereby knowing whether the motor wiring is correct.

[0033] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that modifications may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A motor shaft rotation observation structure, comprising a motor body (1), and further comprising a rotating shaft (2) and a fan cover (4) disposed on the motor body (1), characterized in that: The wind shield (4) is provided with a directional component (5) that rotates on it. A connecting component is provided between the directional component (5) and the rotating shaft (2). The rotating shaft (2) rotates and drives the directional component (5) to rotate through the connecting component.

2. The motor shaft rotation observation structure according to claim 1, characterized in that: The connecting component is a bolt (6), the directional component (5) has a stepped hole (7) in the middle, the shaft (2) has a connecting hole (8) at the end, and the bolt (6) passes through the stepped hole (7) and is threadedly connected to the connecting hole (8).

3. The motor shaft rotation observation structure according to claim 1, characterized in that: The wind shield (4) has a viewing hole (9) in the middle for the directional component (5) to extend out. The inner wall of the viewing hole (9) has an annular groove (10). The outer wall of the directional component (5) has an annular plate (11) that is rotatably connected to the annular groove (10).

4. The motor shaft rotation observation structure according to claim 3, characterized in that: The connector includes a rod (12) and a spring (13). The end of the shaft (2) is provided with a socket (14) for inserting the rod (12). The spring (13) is fixed to the bottom of the socket (14). The other end of the spring (13) is fixedly connected to the rod (12). The end of the rod (12) away from the spring (13) is provided with a pressure cap (15). The outer wall of the rod (12) is provided with a protrusion (17). The inner wall of the socket (14) is provided with a partial spiral groove (16) for sliding of the protrusion (17).

5. The motor shaft rotation observation structure according to claim 4, characterized in that: The bottom of the socket (14) is provided with a groove (18), and a movable plate (19) is rotatably provided in the groove (18). The end of the spring (13) away from the rod (12) is fixed on the movable plate (19).

6. The motor shaft rotation observation structure according to claim 1, characterized in that: The directional component (5) is a ring sleeve. The ring sleeve is provided with multiple sets of arc-shaped protrusions (20) at one end outside the wind cover (4). The arc-shaped protrusions (20) gradually increase in height from one end to the other end. The multiple sets of arc-shaped protrusions (20) are connected end to end to form a ring structure.

7. The motor shaft rotation observation structure according to claim 6, characterized in that: The annular sleeve has a rotating mark protrusion (21) at one end outside the wind cover (4).

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