A motor and fan alignment device

Abstract

This utility model provides a motor and fan alignment device, including a bracket, a motor, and a fan. The fan is mounted on the bracket via a fan frame. The bracket has a motor mount, and the motor is mounted on the motor mount. The motor's main shaft faces the connection hole of the fan's inner disc. The motor position is adjustable in the X, Y, and Z axes. A detachable positioning sleeve is installed at the end of the motor's main shaft, with the sleeve's hole wall tightly against the main shaft. The outer circumferential surface of the front section of the positioning sleeve is a conical surface, with the large end diameter larger than the connection hole diameter and the small end diameter smaller than the connection hole diameter. The conical surface is uniformly coated with a colorant layer. In this utility model, a coloring method is used to detect whether the motor main shaft and the fan are misaligned or not. Based on the motor misalignment detection results, the motor position is adjusted to ensure that the motor and fan are installed correctly, improving the fan's operational stability.

Description

Technical Field

[0001] This utility model belongs to the field of fan manufacturing, and in particular relates to a motor and fan alignment device. Background Technology

[0002] The double-suction centrifugal fan is a high-efficiency fan design with two inlets, allowing air to be drawn in simultaneously from both sides. This design helps improve the fan's suction capacity and overall performance. Double-suction centrifugal fans are widely used in industrial fields such as rotary kiln systems for cement, lime, nickel-iron, and ceramsite.

[0003] A dual-suction centrifugal fan structure has appeared on the market: one motor drives two dual-suction centrifugal fans at the same time. The motor adopts a dual-shaft motor structure. The two dual-suction centrifugal fans are arranged one in front of the other on both sides of the motor. The main shaft of the motor extends into the connection hole of the middle plate inside the fan and is matched with a key connection structure, thereby connecting and fixing the main shaft of the motor and the middle plate. The motor drives the middle plate to rotate, which in turn drives the fan to rotate.

[0004] To improve the stability of the fan operation, the motor needs to be repeatedly adjusted during installation to ensure that the motor spindle can be aligned with the connecting hole of the central plate. Currently, whether the motor is aligned with the connecting hole is determined entirely by visual inspection, which causes inconvenience to production. Utility Model Content

[0005] In view of this, the present invention aims to provide a motor and fan alignment device to achieve rapid alignment and installation of the motor and fan.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A motor and fan alignment device includes a bracket, a motor, and a fan. The fan is mounted on the bracket via a fan frame. The bracket has a motor mount, and the motor is mounted on the motor mount. The motor's main shaft faces the connection hole of the inner disc of the fan. The motor position is adjustable in the X-axis, Y-axis, and Z-axis directions. A positioning sleeve is detachably installed at the end of the motor's main shaft. The wall of the positioning sleeve hole is tightly attached to the main shaft. The outer circumferential surface of the front section of the positioning sleeve is a conical surface. The diameter of the large end of the conical surface is larger than the diameter of the connection hole, and the diameter of the small end is smaller than the diameter of the connection hole. The conical surface is uniformly coated with a colorant layer.

[0008] Furthermore, the motor mount and the bracket, and the motor and the motor mount are respectively installed using bolts; and

[0009] The mounting holes for mounting the motor mount on the bracket are slotted holes set along the X-axis; the mounting holes for mounting the motor on the motor mount are slotted holes set along the Y-axis.

[0010] There are several gaskets between the motor mount and the bracket, or between the motor and the motor mount.

[0011] Furthermore, the through holes for mounting the motor mount and the bracket, as well as the through holes for mounting the motor mount and the motor mount, are threaded holes. The bottom diameter of the threaded hole is larger than the diameter of the corresponding bolt, and the bottom diameter of the threaded hole is larger than the width of the corresponding side hole.

[0012] In addition to their respective matching bolts, the through holes of the motor base and the motor are also each matched with a threaded locating pin. The threaded locating pin includes a threaded rod portion corresponding to the threaded hole and a locating rod portion corresponding to the waist hole. When the motor and the fan are aligned and adjusted, the threaded rod portion of the threaded locating pin is matched and connected to the threaded hole, and the locating rod portion extends into the waist hole.

[0013] Furthermore, the positioning sleeve is provided with a limiting ring, and the end of the main shaft abuts against the limiting ring.

[0014] Furthermore, the outer circumferential surface of the rear section of the positioning sleeve is a cylindrical surface.

[0015] Furthermore, the colorant layer is a red single-color coating layer.

[0016] Furthermore, the positioning sleeve and the main shaft are connected by a transition fit.

[0017] Compared with the prior art, the motor and fan alignment device of this utility model has the following advantages:

[0018] (1) In this utility model, the coloring method is used to detect whether the motor spindle and the fan are misaligned or not, and the motor position is adjusted according to the motor misalignment detection results to ensure that the motor and the fan are installed in the correct orientation, thereby improving the fan operation stability.

[0019] (2) In this utility model, the bolt mounting structure between the motor base and the bracket, and between the motor and the motor base, is used to improve the mounting hole and through hole structure of the mounting bolts, and a threaded positioning pin is also configured. During the motor position adjustment stage, the threaded positioning pin is used to make it easier to adjust the motor position linearly in the X and Y axis directions, so as to achieve the accuracy of motor position adjustment. After the motor position is adjusted, the threaded positioning pin is replaced with a bolt to fix the motor position and ensure the overall operation stability. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a front view of a motor and fan alignment device according to an embodiment of the present utility model;

[0022] Figure 2 This is a left view of a motor and fan alignment device according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the positioning sleeve being installed on the motor spindle in this embodiment;

[0024] Figure 4 for Figure 3 AA section view;

[0025] Figure 5 This is a structural diagram showing the alignment of the positioning sleeve and the fan center plate.

[0026] Figure 6 This is a schematic diagram of a threaded locating pin structure.

[0027] Figure 7 This is a schematic diagram of the installation structure for the threaded locating pin.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Motor; 101-Main shaft; 2-Motor base; 3-Bracket; 5-Fan; 51-Middle plate; 52-Connecting hole; 6-Fan frame; 7-Positioning sleeve; 71-Conical surface; 72-Cylindrical surface; 75-Limiting ring; 8-Bolt; 9-Threaded positioning pin; 91-Threaded rod; 92-Positioning rod; 10-Waist hole. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 , Figure 2 As shown, a motor and fan alignment device includes a bracket 3, a motor 1, and a fan 5. The fan 5 is a double-suction centrifugal fan, and two fans are arranged one in front of the other on both sides of the motor 1. The two fans 5 are coaxial and each is mounted on the bracket 3 via a fan frame 6. The fan frame 6 is bolted to the bracket 3, and the axial position of both fans 5 can be adjusted. For example, the bolt holes on the bracket 3 for mounting the fan frame 6 are oblong holes along the fan axis; this type of adjustment structure is common and will not be described in detail here. The bracket 3 preferably consists of two parallel guide rail brackets. For ease of description, the extension direction of the guide rails is defined as the X-axis direction, which is also the extension direction of the fan's central axis. The bracket 3 is equipped with a motor mount 2, and the motor 1 is mounted on the motor mount 2. The main shaft 101 of the motor 1 faces the connection hole 52 of the inner disc 51 of the fan 5. The position of the motor 1 can be adjusted in the X-axis direction, the Y-axis direction (horizontal and perpendicular to the extension direction of the bracket 3), and the Z-axis direction.

[0032] like Figure 3 , Figure 4As shown, a detachable positioning sleeve 7 is installed at the end of the main shaft 101 of the motor 1. The positioning sleeve 7 and the main shaft 101 are connected by a transition fit. While ensuring that the positioning sleeve 7 is stably fitted onto the main shaft 101, a small amount of external force can be used to remove the positioning sleeve 7 from the main shaft 101. The wall of the hole of the positioning sleeve 7 is tightly attached to the main shaft 101. The outer circumferential surface of the front section (the end opposite to the main shaft) of the positioning sleeve 7 is a conical surface 71. The diameter of the large end of the conical surface 71 is larger than the diameter of the connecting hole 52, and the diameter of the small end is smaller than the diameter of the connecting hole 52. This ensures that after the conical surface 71 is inserted into the connecting hole 52 of the inner plate 5 of the fan, the port of the connecting hole 52 can form an imprint on the conical surface 71. The conical surface 71 is uniformly coated with a colorant layer, such as a red lead coating layer.

[0033] This utility model utilizes a coloring method to determine whether the motor spindle 101 is aligned with the fan's connection hole: the conical surface 71 is coated with a coloring layer, and when the conical surface is inserted into the connection hole 52 of the inner disc 51 of the fan 5, if... Figure 5 As shown, the port of the connecting hole 52 leaves an imprint on the pigment layer. By observing the location of the imprint and the degree of pigment change at the imprint, it can be determined whether the conical part 71 is aligned with the connecting hole 52, and thus whether the motor spindle 101 and the fan 4 are aligned. If there is no imprint at the top of the conical part 71 but an imprint appears at the bottom, it means that the position of the spindle 101 is lower than the connecting hole 52, and the position of the motor 1 needs to be adjusted upward. If the imprint is a complete circle, the spindle 101 and the connecting hole 52 are aligned, that is, the motor and the fan are aligned, and the position of the motor can be fixed to make it stably connected to the fan.

[0034] Positioning sleeve 7 structure as follows Figure 4 As shown, its rear outer circumferential surface is a cylindrical surface 72, and the outer circumferential surface 72 can be patterned for easy gripping. A limit ring 75 protrudes from the middle of the inner wall of the positioning sleeve. When the positioning sleeve 7 is installed on the main shaft 101 for centering and adjusting the motor position, the main shaft 101 abuts against the limit ring 75, as shown. Figure 4 This structure can limit the length of the fitting on the positioning sleeve 7 and the main spindle 101.

[0035] In this invention, the motor base 2 and the bracket 3, as well as the motor 1 and the motor base 2, are respectively installed using bolts 8. The mounting hole for the motor base 2 on the bracket 3 is a slotted hole along the X-axis; the mounting hole for the motor on the motor base 2 is a slotted hole along the Y-axis. Several shims are also fitted between the motor base 2 and the bracket 3, or between the motor 1 and the motor base 2. This structure allows for adjustment of the position of the motor 1 in the X-axis, Y-axis, and vertical (Z-axis) directions.

[0036] The through holes for mounting the motor base 2 and the bracket 3, and the through holes for mounting the motor 1 and the motor base 2 are threaded holes. The bottom hole diameter of the threaded hole is larger than the diameter of the corresponding bolt 8, and the bottom hole diameter of the threaded hole is larger than the width of the corresponding waist hole.

[0037] In addition to their respective matching bolts 8, the through holes of motor base 2 and motor 1 are also each matched with threaded locating pins 9, such as... Figure 6 As shown, the threaded locating pin 9 includes a threaded rod portion 91 corresponding to the threaded hole and a locating rod portion 92 corresponding to the slotted hole 10. When adjusting the alignment of the motor 1 and the fan 5, for example, when adjusting the position of the motor 1 in the X-axis direction, as... Figure 7 As shown, the threaded rod 91 of the threaded locating pin 9 is matched and connected to the threaded hole, and the locating rod 92 extends into the waist hole 10. At this time, the locating rod 92 and the waist hole 101 form a sliding pair structure, ensuring the linearity of the motor base 2 in the X-axis direction, that is, ensuring the linearity of the motor 1 on the motor base 2 in the X-axis direction, and improving the accuracy of the motor 1's movement. After the motor position is adjusted, the threaded locating pin 9 is unscrewed, and the motor base 2 and the bracket 3 are fixed together using bolts 8.

[0038] The operation process of this utility model is as follows: After determining the alignment of the motor's main shaft 101 with the connecting hole of the inner plate of the front-mounted fan using the coloring method, the motor main shaft and the two fans are aligned. The motor is then moved to the rear, the positioning sleeve is removed, and the motor is pushed forward until the main shaft is inserted into the connecting hole of the front fan plate and connected by a key. The threaded positioning pin 9 is removed, and the motor base 2 and bracket 3 are fixed with bolts 8, completing the connection and fixation between the motor 1 and the front fan. Then, the fan behind the motor is pushed forward to connect with the other main shaft of the motor, thus completing the alignment and connection of the dual-shaft motor and the two fans.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric motor and fan alignment device, characterized by: The device includes a bracket (3), a motor (1), and a fan (5). The fan (5) is mounted on the bracket (3) via a fan frame (6). The bracket (3) has a motor seat (2). The motor (1) is mounted on the motor seat (2). The main shaft (101) of the motor (1) faces the connecting hole (52) of the inner disc (51) of the fan (5). The position of the motor (1) can be adjusted in the X-axis, Y-axis, and Z-axis directions. A positioning sleeve (7) is detachably installed at the end of the main shaft (101) of the motor (1). The hole wall of the positioning sleeve (7) is close to the main shaft (101). The outer circumferential surface of the front section of the positioning sleeve (7) is a conical surface (71). The diameter of the large end of the conical surface (71) is larger than the diameter of the connecting hole (52), and the diameter of the small end is smaller than the diameter of the connecting hole (52). The conical surface (71) is uniformly coated with a colorant layer.

2. An electric motor and fan alignment device as claimed in claim 1, wherein: The motor mount (2) and the bracket (3), and the motor (1) and the motor mount (2) are respectively installed using bolts (8); and The bracket (3) has a mounting hole for mounting the motor mount (2) that is a slotted hole set along the X-axis; the motor mount (2) has a mounting hole for mounting the motor that is a slotted hole set along the Y-axis. Several gaskets are matched between the motor mount (2) and the bracket (3), or between the motor (1) and the motor mount (2).

3. An electric motor and fan alignment device as claimed in claim 2, wherein: The through holes for mounting the motor mount (2) and the bracket (3), and the through holes for mounting the motor (1) and the motor mount (2) are threaded holes. The bottom hole diameter of the threaded hole is larger than the diameter of the corresponding bolt (8), and the bottom hole diameter of the threaded hole is larger than the hole width of the corresponding waist hole. In addition to the bolts (8) that match each of the through holes of the motor base (2) and the motor (1), each of the through holes is also matched with a threaded locating pin (9). The threaded locating pin (9) includes a threaded rod (91) that corresponds to the threaded hole and a locating rod (92) that corresponds to the waist hole (10). When the motor (1) and the fan (5) are aligned and adjusted, the threaded rod (91) of the threaded locating pin (9) is matched and connected with the threaded hole, and the locating rod (92) extends into the waist hole (10).

4. The motor and fan alignment device of claim 1, wherein: The positioning sleeve (7) is provided with a limiting ring (75), and the end of the main shaft (101) abuts against the limiting ring (75).

5. The motor and fan alignment device of claim 1, wherein: The outer circumferential surface of the rear section of the positioning sleeve (7) is a cylindrical surface (72).

6. A motor and fan alignment device as claimed in claim 1, wherein: The colorant layer is a red single-color paint layer.

7. The motor and fan alignment device of claim 1, wherein: The positioning sleeve (7) and the main shaft (101) are connected by a transition fit.

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