Shaft structure of permanent magnet synchronous motor

Abstract

The utility model relates to the technical field of permanent magnet synchronous motors, in particular to a shaft structure of a permanent magnet synchronous motor, which comprises a fixed block, the lower end of the fixed block is fixedly connected with a connector, the left part and the right part of the lower end of the connector are fixedly connected with limiting blocks, and the upper end of the fixed block is fixedly connected with a supporting shaft. The upper end of the supporting shaft is sleeved with a connecting shaft, and the upper end of the connecting shaft is fixedly connected with a connecting block. The upper portion of the outer surface of the supporting shaft and the lower portion of the outer surface of the connecting shaft are jointly sleeved with a fixing ring, and the left portion and the right portion of the outer surface of the fixing ring are each connected with two connecting screw rods in a penetrating mode. According to the shaft structure of the permanent magnet synchronous motor, the supporting shaft and the connecting shaft are arranged on the whole permanent magnet synchronous motor, and through the design of the supporting shaft and the connecting shaft, the shaft can be used in a prolonged manner and is easy to disassemble, and the use efficiency and the maintenance convenience of the permanent magnet synchronous motor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet synchronous motors, in particular to a shaft structure of a permanent magnet synchronous motor. Background Art

[0002] Permanent magnet synchronous motors use permanent magnets to provide excitation, which makes the motor structure simpler and reduces processing and assembly costs. They are commonly used in industries such as (iron mills and sintering plants), ceramics (ball mills), petroleum (pumping units) and textiles (twisters, spinning machines). The existing shaft structure of permanent magnet synchronous motors has at least the following disadvantages during use: 1. The shaft structure of the existing permanent magnet synchronous motor is not easy to extend; 2. The shaft structure of the existing permanent magnet synchronous motor is troublesome to install and disassemble, and is not convenient for maintenance and replacement. Therefore, we introduce a new shaft structure of permanent magnet synchronous motor. Utility Model Content

[0003] The main purpose of the utility model is to provide a shaft structure of a permanent magnet synchronous motor, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A shaft structure of a permanent magnet synchronous motor, comprising a fixed block, a connector fixedly connected to the lower end of the fixed block, a limit block fixedly connected to the left and right lower ends of the connector, a support shaft fixedly connected to the upper end of the fixed block, a connecting shaft sleeved on the upper end of the support shaft, and a connecting block fixedly connected to the upper end of the connecting shaft;

[0006] The upper part of the outer surface of the support shaft and the lower part of the outer surface of the connecting shaft are jointly sleeved with a fixing ring, and the left part and the right part of the outer surface of the fixing ring are both inserted and connected with two connecting screws.

[0007] Preferably, the support shaft includes a shaft body No. 1, a No. 1 slot is opened on the upper outer surface of the shaft body No. 1, a No. 1 connecting hole is opened on the left and right outer surfaces of the No. 1 slot, an insert block is fixedly connected to the middle of the upper end of the No. 1 slot, and the No. 1 shaft body is fixedly connected to the fixed block.

[0008] Preferably, the connecting shaft includes a No. 2 shaft body, a No. 2 slot is opened at the lower part of the outer surface of the No. 2 shaft body, No. 2 connecting holes are opened on the left and right parts of the outer surface of the No. 2 slot, a connecting groove is opened at the lower end of the No. 2 slot, and the No. 2 shaft body is fixedly connected to the connecting block.

[0009] Preferably, the connecting groove is sleeved with the insert block.

[0010] Preferably, the fixing ring is sleeved with both the first card slot and the second card slot.

[0011] Preferably, the two connecting screws at the upper portion pass through the fixing ring and are interlaced and connected with the two horizontal No. 2 connecting holes respectively, and the two connecting screws at the lower portion pass through the fixing ring and are interlaced and connected with the two horizontal No. 1 connecting holes respectively.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. By setting a supporting shaft and a connecting shaft, a No. 1 card slot and an insert block are set on the supporting shaft, and a No. 2 card slot and a connecting slot are set on the connecting shaft. The entire shaft can be extended by connecting the supporting shaft and the connecting shaft, thereby facilitating the use of the permanent magnet synchronous motor and improving flexibility;

[0014] 2. By setting a fixing ring, the fixing ring is sleeved with the No. 2 slot on the connecting shaft and the No. 1 slot on the supporting shaft, and fixed by two sets of two horizontal connecting screws, the supporting shaft and the connecting shaft are connected together, and the connection between the supporting shaft and the connecting shaft is easy to install and disassemble, which is convenient for the inspection and replacement of the supporting shaft and the connecting shaft, thereby improving flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the shaft structure of a permanent magnet synchronous motor of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection between the support shaft and the connecting shaft of the shaft structure of a permanent magnet synchronous motor of the utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of a support shaft of a shaft structure of a permanent magnet synchronous motor of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the overall structure of a connecting shaft of a shaft structure of a permanent magnet synchronous motor.

[0019] In the figure: 1. fixing block; 2. connecting head; 3. limiting block; 4. supporting shaft; 5. connecting shaft; 6. connecting block; 7. fixing ring; 8. connecting screw; 41. shaft body No. 1; 42. slot No. 1; 43. connecting hole No. 1; 44. insert block; 51. shaft body No. 2; 52. slot No. 2; 53. connecting hole No. 2; 54. connecting slot. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A shaft structure of a permanent magnet synchronous motor, comprising a fixed block 1, a connector 2 is fixedly connected to the lower end of the fixed block 1, a limit block 3 is fixedly connected to the left and right parts of the lower end of the connector 2, a support shaft 4 is fixedly connected to the upper end of the fixed block 1, a connecting shaft 5 is sleeved on the upper end of the support shaft 4, and a connecting block 6 is fixedly connected to the upper end of the connecting shaft 5;

[0025] In this embodiment, the connecting shaft 5 includes a No. 2 shaft body 51, a No. 2 slot 52 is opened at the lower part of the outer surface of the No. 2 shaft body 51, a No. 2 connecting hole 53 is opened on the left and right parts of the outer surface of the No. 2 slot 52, and a connecting groove 54 is opened at the lower end of the No. 2 slot 52. The No. 2 shaft body 51 is fixedly connected to the connecting block 6; the connecting groove 54 is sleeved with the insert block 44; the fixing ring 7 is sleeved with the No. 1 slot 42 and the No. 2 slot 52. By setting the connecting shaft 5 to be connected with the support shaft 4, the shaft is extended. By adjusting the length of the shaft or selecting connecting shafts 5 of different lengths, the total length of the shaft can be flexibly adjusted according to actual needs to adapt to different working conditions and needs and improve flexibility.

[0026] In this embodiment, the upper part of the outer surface of the support shaft 4 and the lower part of the outer surface of the connecting shaft 5 are jointly sleeved with a fixing ring 7, and the left part and the right part of the outer surface of the fixing ring 7 are both inserted and connected with two connecting screws 8; the support shaft 4 includes a No. 1 shaft body 41, a No. 1 card groove 42 is opened on the upper part of the outer surface of the No. 1 shaft body 41, and a No. 1 connecting hole 43 is opened on the left part and the right part of the outer surface of the No. 1 card groove 42, and an insert block 44 is fixedly connected to the middle part of the upper end of the No. 1 card groove 42, and the No. 1 shaft body 41 is fixedly connected to the fixing block 1; the two connecting screws 8 at the upper part respectively pass through the fixing ring 7 and are inserted and connected with the two horizontal No. 2 connecting holes 53, and the two connecting screws 8 at the lower part respectively pass through the fixing ring 7 and the two horizontal The No. 1 connecting hole 43 is inserted and connected, and the four connecting screws 8 are arranged horizontally and are respectively located on both sides of the support shaft 4 and the connecting shaft 5. The four connecting screws 8 are tightened to fix the connection between the support shaft 4 and the connecting shaft 5, and the fixing ring 7 is sleeved with the No. 1 slot 42 on the support shaft 4, and the insert block 44 on the limit block 3 is inserted and connected with the connecting slot 54 on the connecting shaft 5, and the fixing ring 7 is sleeved with the No. 2 slot 52 on the connecting shaft 5. The connecting shaft 5 and the support shaft 4 are tightly connected together through the fixing ring 7, which prevents the shaft structure from being displaced or loosened during operation, improves stability, and the connection between the support shaft 4 and the connecting shaft 5 is easy to install and disassemble, which improves flexibility.

[0027] It should be noted that the utility model is a shaft structure of a permanent magnet synchronous motor. During use, the fixing ring 7 is sleeved with the No. 1 slot 42 on the support shaft 4, and the connecting slot 54 on the connecting shaft 5 is sleeved with the plug block 44 on the support shaft 4, and the connection between the support shaft 4 and the connecting shaft 5 is fixed by two sets of two horizontal connecting screws 8, so as to extend the use of the shaft structure of the entire permanent magnet synchronous motor and improve flexibility. The connection between the support shaft 4 and the connecting shaft 5 is convenient to install and disassemble, and is convenient for rapid replacement after the support shaft 4 or the connecting shaft 5 is damaged or worn. This design not only shortens the maintenance time, but also reduces the maintenance cost. The shaft structure can be fixed to the permanent magnet synchronous motor through the connector 2 and the two limit blocks 3, which is convenient for the use of the shaft structure of the permanent magnet synchronous motor and improves stability.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A shaft structure of a permanent magnet synchronous motor, comprising a fixed block (1), characterized in that: The lower end of the fixed block (1) is fixedly connected to a connecting head (2), the lower left and lower right parts of the connecting head (2) are fixedly connected to a limiting block (3), the upper end of the fixed block (1) is fixedly connected to a supporting shaft (4), the upper end of the supporting shaft (4) is sleeved with a connecting shaft (5), and the upper end of the connecting shaft (5) is fixedly connected to a connecting block (6); The upper portion of the outer surface of the support shaft (4) and the lower portion of the outer surface of the connecting shaft (5) are sleeved with a fixing ring (7), and the left portion and the right portion of the outer surface of the fixing ring (7) are both interlaced and connected with two connecting screws (8).

2. The shaft structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The support shaft (4) comprises a first shaft body (41), a first slot (42) is provided at the upper portion of the outer surface of the first shaft body (41), a first connection hole (43) is provided at the left portion and the right portion of the outer surface of the first slot (42), an insert block (44) is fixedly connected to the middle portion of the upper end of the first slot (42), and the first shaft body (41) is fixedly connected to the fixed block (1).

3. The shaft structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The connecting shaft (5) comprises a second shaft body (51), a second slot (52) is provided at the lower portion of the outer surface of the second shaft body (51), second connecting holes (53) are provided at the left and right portions of the outer surface of the second slot (52), a connecting groove (54) is provided at the lower end of the second slot (52), and the second shaft body (51) is fixedly connected to the connecting block (6).

4. The shaft structure of a permanent magnet synchronous motor according to claim 3, characterized in that: The connecting groove (54) is sleeved with the insert block (44).

5. The shaft structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The fixing ring (7) is sleeved with both the first clamping groove (42) and the second clamping groove (52).

6. The shaft structure of a permanent magnet synchronous motor according to claim 1, characterized in that: The two connecting screws (8) at the upper part respectively pass through the fixing ring (7) and are connected to the two horizontal No. 2 connecting holes (53), and the two connecting screws (8) at the lower part respectively pass through the fixing ring (7) and are connected to the two horizontal No. 1 connecting holes (43).

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