A motor support structure for a direct drive fan

Abstract

The utility model discloses a motor support structure of direct connection fan, including top support and bottom support, the top support includes the horizontal connecting plate and vertical connecting plate of mutual fixed connection, and vertical connecting plate and motor mounting plate detachably fixed connection, and the horizontal connecting plate is equipped with the through -hole that can pass through motor lifting ring, bottom support includes first support plate and second support plate, and first support plate sets up vertically and with motor mounting plate detachably fixed connection, and second support plate sets up horizontally and be located motor below and with motor detachably fixed connection, and second support plate sets up horizontally and one end with first support plate fixed connection. The stability of the installation structure between motor and fan plays good reinforcing effect, guarantees the stability of the installation structure between motor and fan, can overcome the problem that the vibration value is too large caused by the motor tail of direct connection fan overhanging too long.

Description

Technical Field

[0001] This utility model belongs to the field of motor installation technology, specifically relating to a motor support structure for a direct-drive fan. Background Technology

[0002] Currently, most horizontally mounted B5 motors typically employ a structure where the motor mounting plate and square reinforcing ribs are welded together, and the motor is secured to the mounting plate with four bolts. This structure lacks overall structural integrity. While it has little impact on low-power, ordinary motors, it can cause vibration issues when used with high-power, variable frequency, or variable frequency explosion-proof motors. Simply reinforcing the motor end caps without considering the overall support and stability of the motor body can lead to problems when using high-power, variable frequency, or variable frequency explosion-proof motors (especially those that are too long or heavy). Because the motor tail is largely unsupported at high speeds, significant centrifugal force is generated, causing the tail to wobble. This reinforcement structure fails to provide stability, resulting in excessive motor vibration and ultimately affecting the lifespan of the motor bearings.

[0003] Therefore, a new technology is needed to solve the problem of how to ensure the stability of the motor mounting structure in existing technologies. Utility Model Content

[0004] To address the aforementioned problems in the prior art, this utility model provides a motor support structure for a direct-drive fan, which can reinforce the motor mounting structure in both horizontal and vertical directions, control the horizontal and vertical vibration values ​​of the motor within a reasonable range, thereby effectively strengthening the mounting structure between the motor and the fan and ensuring the stability of the motor mounting structure.

[0005] The present invention adopts the following technical solution:

[0006] A motor support structure for a direct-drive fan includes a top bracket and a bottom bracket. The top bracket includes a horizontal connecting plate and a vertical connecting plate that are fixedly connected to each other. The vertical connecting plate is detachably fixedly connected to a motor mounting plate. The horizontal connecting plate has a through hole through which a motor lifting ring can pass.

[0007] The bottom bracket includes a first support plate and a second support plate. The first support plate is vertically arranged and detachably fixedly connected to the motor mounting plate. The second support plate is horizontally arranged and located below the motor and abuts against the motor. One end of the second support plate is fixedly connected to the first support plate.

[0008] As a further improvement to the technical solution of this utility model, the horizontal connecting plate includes a first plate and a second plate that are horizontally arranged and fixedly connected in sequence. The first plate and the second plate are symmetrically arranged, and the ends of the first plate and the second plate that are far apart from each other are fixedly connected to the vertical connecting plate.

[0009] As a further improvement to the technical solution of this utility model, the included angle between the first plate and the second plate is greater than 90°.

[0010] As a further improvement to the technical solution of this utility model, the vertical connecting plate includes a first plate and a second plate. The lower end of the first plate is fixedly connected to the end of the first plate away from the second plate, and the lower end of the second plate is fixedly connected to the end of the second plate away from the first plate. Both the first plate and the second plate are detachably fixedly connected to the motor mounting plate.

[0011] As a further improvement to the technical solution of this utility model, the first support plate and the second support plate are fixedly connected to each other from bottom to top in an inverted L-shape.

[0012] As a further improvement to the technical solution of this utility model, the bottom bracket also includes a reinforcing rib, the upper end of which is connected to the second support plate and the lower end of which is connected to the first support plate.

[0013] As a further improvement to the technical solution of this utility model, the reinforcing rib is in the shape of a right triangle, the reinforcing rib is vertically arranged and is perpendicular to the first support plate and the second support plate respectively, and the two adjacent right-angled sides of the reinforcing rib are connected to the first support plate and the second support plate respectively.

[0014] As a further improvement to the technical solution of this utility model, the angle between the hypotenuse of the reinforcing rib and the first support plate is greater than the angle between the hypotenuse and the second support plate.

[0015] As a further improvement to the technical solution of this utility model, a plurality of threaded holes are provided at intervals on the second support plate, and a tightening bolt corresponding to each of the threaded holes is installed on the second support plate. Each of the threaded holes is vertically arranged, and each of the tightening bolts can pass through the corresponding threaded hole and tighten upwards against the bottom surface of the motor.

[0016] As a further improvement to the technical solution of this utility model, a plurality of positioning holes are provided at intervals on the second support plate, and a fixing nut is welded into each positioning hole. The fixing nut is used to form the threaded hole.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The motor support structure of this direct-drive fan features a bottom bracket that restricts the motor's vertical movement or swaying, thus reducing vertical vibration. The top bracket restricts the motor's horizontal movement or swaying, reducing horizontal vibration. This motor support structure effectively limits both horizontal and vertical movement and swaying, keeping the motor's horizontal and vertical vibration levels within a reasonable range. This significantly strengthens the stability of the installation structure between the motor and the fan, overcoming the problem of excessive vibration caused by excessively long unsupported motor tails in direct-drive fans. It also reduces motor vibration and ensures or extends the life of motor bearings, as seen in B5 motors. Attached Figure Description

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] Figure 1 This is a top view of the top support;

[0021] Figure 2 This is the main view of the top support;

[0022] Figure 3 This is a side view of the top support;

[0023] Figure 4 This is the main view of the bottom support;

[0024] Figure 5 This is a top view of the bottom support;

[0025] Figure 6 This is a side view of the bottom support;

[0026] Figure 7 This is a front view of the overall structure of this utility model and its connection structure with the motor and motor mounting plate;

[0027] Figure 8 This is a side view of the overall structure of this utility model and its connection structure with the motor and motor mounting plate;

[0028] Figure 9 This is a top view of the overall structure of this utility model and its connection structure with the motor and motor mounting plate.

[0029] Figure label:

[0030] 1-Top bracket; 11-Horizontal connecting plate; 111-First plate; 112-Second plate; 113-Through hole; 12-Vertical connecting plate; 121-First plate; 122-Second plate; 13-Adjustment hole;

[0031] 2- Bottom bracket; 21- First support plate; 211- Bolt hole; 22- Second support plate; 221- Fixing nut; 222- Positioning hole; 23- Reinforcing rib; 24- Tightening bolt;

[0032] 3-Fan; 31-Rear cover;

[0033] 4-Motor; 41-Lifting ring;

[0034] 5-Motor mounting plate. Detailed Implementation

[0035] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0036] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0037] Reference Figures 1 to 9 A motor support structure for a direct-drive fan, used to enhance the stability of the connection structure between the fan 3 and the motor 4, includes a top support 1 and a bottom support 2. The top support 1 includes a horizontal connecting plate 11 and a vertical connecting plate 12 fixedly connected to each other. The vertical connecting plate 12 is detachably fixedly connected to a motor mounting plate 5 mounted on the rear cover 31 of the fan 3. The horizontal connecting plate 11 has a through hole 113 through which a lifting ring 41 of the motor 4 can pass. The cross-sectional dimensions of the through hole 113 are adapted to the lifting ring 41, which can restrict the horizontal movement or shaking of the motor 4. The rear cover 31 of the fan 3 has a motor mounting plate 5 for mounting the motor 4 on the fan 3. The bottom support 2 includes a first support plate 21 and a second support plate 22. The first support plate 21 is vertically arranged and detachably fixedly connected to the motor mounting plate 5. The second support plate 22 is horizontally arranged and located below the motor 4 and detachably fixedly connected to the motor 4. One end of the second support plate 22 is fixedly connected to the first support plate 21. The bottom bracket 2 restricts the relative movement or swaying of the motor 4 in the vertical direction, thereby reducing the vertical vibration of the motor 4. The top bracket 1 restricts the relative movement or swaying of the motor 4 in the horizontal direction, thereby reducing the horizontal vibration of the motor 4.

[0038] The motor 4 support structure of the direct-drive fan 3 in this solution can limit the relative horizontal and vertical movement or swaying of the motor 4, and control the horizontal and vertical vibration values ​​of the motor 4 within a reasonable range. This effectively strengthens the stability of the installation structure between the motor 4 and the fan 3, and ensures the stability of the installation structure between the motor 4 and the fan 3. It can overcome the problem of excessive vibration caused by the excessively long unsupported tail of the motor 4 of the direct-drive fan 3, such as the B5 motor 4.

[0039] Specifically, the horizontal connecting plate 11 includes a first plate 111 and a second plate 112 that are horizontally arranged and fixedly connected in sequence. The first plate 111 and the second plate 112 are symmetrically arranged, and the ends of the first plate 111 and the second plate 112 that are far apart from each other are fixedly connected to the vertical connecting plate 12. The connection node between the first plate 111 and the second plate 112 forms a fixing part, and the through hole 113 is located on the fixing part. The lifting ring 41 on the motor 4 is a lifting ring screw, which itself has threads. The top bracket 1 and the motor 4 are connected by the lifting ring 41 passing through the through hole 113. The horizontal connecting plate 11 can limit the horizontal swaying of the lifting ring 41 with the motor 4. The first plate 111 and the second plate 112 can have a smooth transition or a rounded transition at their connection node. The width of the connection node is greater than the width of the first plate 111 and the second plate 112, so that there is sufficient strength to connect with the motor 4 at the connection node. A shorter third plate can also be provided between the first plate 111 and the second plate 112 to form a wider plate structure between them. In this case, the third plate forms a fixing part, and the through hole 113 is located on the third plate. The connection nodes between both ends of the third plate and the first plate 111 and the second plate 112 can be either smooth transitions or rounded transitions. One end of the top bracket 1 can be fixed to the motor 4 using bolts through the lifting eye 41 screws on the motor 4.

[0040] Specifically, the included angle between the first plate 111 and the second plate 112 is greater than 90° and less than 180°, and the lengths of the first plate 111 and the second plate 112 are equal and both are greater than the length of the second plate 112. The structure formed by the sequential connection of the first plate 111, the second plate 112, and the motor mounting plate 5 forms a hollow structure, which allows the protruding components on the upper end of the motor 4 to be inserted, so that the arrangement between the tops will not interfere with the structure on the motor 4.

[0041] Specifically, the vertical connecting plate 12 includes a vertically arranged first plate 121 and a second plate 122. The first plate 121 and the second plate 122 can be arranged parallel to the motor mounting plate 5, and during installation, the first plate 121 and the second plate 122 are close to the motor mounting plate 5. The lower end of the first plate 121 is fixedly connected to the end of the first plate 111 away from the second plate 112, and the lower end of the second plate 122 is fixedly connected to the end of the second plate 112 away from the first plate 111. The first plate 121 and the second plate 122 are both detachably fixedly connected to the motor mounting plate 5, and both can be connected to the rear cover 31 of the fan 3 by bolts. In actual use, the above connection can be achieved using the original bolts on the motor mounting plate 5. The dimensions of each component of the top bracket 1 can be designed according to actual needs to accommodate the original bolt positions of the rear cover 31 of the fan 3, the motor 4, and the motor mounting plate 5.

[0042] Specifically, both the first plate 121 and the second plate 122 are provided with adjustment holes 13. The adjustment holes 13 can be elongated holes or U-shaped holes. The length direction of the two elongated holes is vertical. The two bolts originally on the motor mounting plate 5 can be passed through the two elongated holes to fix the first plate 121 and the second plate 122 to the motor mounting plate 5. In addition, the through hole 113 is an elongated hole or a U-shaped hole. The structure of the elongated hole or U-shaped hole facilitates installation and adjustment. The length direction of the through hole 113 is perpendicular to the first plate 121 and the second plate 122. The top bracket 1 can be made of high-strength steel plate, and the processing technology adopts laser cutting and bending forming. The vertical connecting plate 12 and the horizontal connecting plate 11 can adopt an integrated structure, that is, the top bracket 1 as a whole can adopt an integrated structure.

[0043] Specifically, the first support plate 21 and the second support plate 22 are fixedly connected to each other from bottom to top in an inverted L-shape. The second support plate 22 can abut against and be fixed to the motor 4 to support the motor 4.

[0044] Specifically, the bottom support 2 further includes a reinforcing rib 23. The upper end of the reinforcing rib 23 is connected to the second support plate 22, and the lower end is connected to the first support plate 21. The connection between the reinforcing rib 23 and the first support plate 21 and the second support plate 22 can be achieved by welding. The first support plate 21 and the second support plate 22 can be connected by welding or by integral connection. The bottom edge of the first support plate 21 can be arc-shaped to adapt to the partial edge structure shape of the fan 3 rear cover 31, so that the bottom of the first support plate 21 can be directly fixed to the fan 3 rear cover 31 using the existing bolts on the fan 3 rear cover 31. (Refer to the attached figure.) Figure 4The first support plate 21 can be in the shape of an approximate fan ring. The width of the upper end of the first support plate 21 is adapted to the width of the second support plate 22. The first support plate 21 and the second support plate 22 can be formed by bending a single piece of sheet material. The first support plate 21 has three or more connecting holes 211, and the bottom bracket 2 can be fixed to the motor mounting plate 5 by three or more bolts that correspond one-to-one with each connecting hole 211.

[0045] Specifically, the reinforcing rib 23 is a right-angled triangle, vertically arranged and perpendicular to both the first support plate 21 and the second support plate 22. The two adjacent right-angled sides of the reinforcing rib 23 are connected to the first support plate 21 and the second support plate 22, respectively. The angle between the hypotenuse of the reinforcing rib 23 and the first support plate 21 is greater than the angle between the hypotenuse and the second support plate 22.

[0046] Specifically, the second support plate 22 is provided with a plurality of threaded holes spaced apart, and a tightening bolt 24 corresponding to each of the threaded holes is installed on the second support plate 22. Each of the threaded holes is vertically arranged, and each tightening bolt 24 can pass through the corresponding threaded hole and tighten upward against the bottom surface of the motor 4. Three or more tightening bolts 24 can be used to pass through the second support plate 22 from bottom to top and abut against the bottom of the motor 4 for fixation, thereby tightening the bottom of the motor 4 by tightening the bolts 24.

[0047] Specifically, the second support plate 22 is provided with a plurality of positioning holes 222 spaced apart, and a corresponding fixing nut 221 is welded into each positioning hole 222. The fixing nut 221 is used to form the threaded hole. The tightening bolt 24 is threadedly connected to the fixing nut 221 and can be screwed upward to tighten the motor 4. The tightening bolt 24 can be an 8.8 grade high-strength hexagonal bolt. The position and number of positioning holes 222 can be set according to the actual situation of the bottom structure of the motor 4 to facilitate stable tightening of the bottom surface of the motor 4. For example, a positioning hole 222 can be opened on the second support plate 22 at the center of the bottom surface of the motor 4 and on both sides of the center, as shown in the attached figure. Figure 5 As shown.

[0048] The motor support structure of this direct-drive fan, through the installation of a top bracket 1 and a bottom bracket 2, ensures the support and stability of the motor 4, and is simple in structure and easy to manufacture. Furthermore, experimental verification shows that before installing this direct-drive fan's motor support structure, the motor vibration value is typically 10mm / s-13mm / s; after installation, the motor vibration value can be reduced to 2mm / s-3mm / s, thus reducing motor vibration and ensuring or extending the life of the motor bearings.

[0049] Other aspects of the motor support structure for a direct-drive fan described in this utility model are available in the prior art and will not be repeated here.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A motor support structure for a direct-drive fan, characterized in that: It includes a top bracket and a bottom bracket. The top bracket includes a horizontal connecting plate and a vertical connecting plate that are fixedly connected to each other. The vertical connecting plate is detachably fixedly connected to a motor mounting plate. The horizontal connecting plate is provided with a through hole through which a motor lifting ring can pass. The bottom bracket includes a first support plate and a second support plate. The first support plate is vertically arranged and detachably fixedly connected to the motor mounting plate. The second support plate is horizontally arranged and located below the motor and abuts against the motor. One end of the second support plate is fixedly connected to the first support plate.

2. The motor support structure for a direct-drive fan according to claim 1, characterized in that: The horizontal connecting plate includes a first plate and a second plate that are horizontally arranged and fixedly connected in sequence. The first plate and the second plate are symmetrically arranged, and the ends of the first plate and the second plate that are far apart from each other are fixedly connected to the vertical connecting plate.

3. The motor support structure for a direct-drive fan according to claim 2, characterized in that: The angle between the first plate and the second plate is greater than 90°.

4. The motor support structure for a direct-drive fan according to claim 3, characterized in that: The vertical connecting plate includes a first plate and a second plate. The lower end of the first plate is fixedly connected to the end of the first plate away from the second plate, and the lower end of the second plate is fixedly connected to the end of the second plate away from the first plate. Both the first plate and the second plate are detachably fixedly connected to the motor mounting plate.

5. The motor support structure for a direct-drive fan according to claim 1, characterized in that: The first support plate and the second support plate are fixedly connected to each other from bottom to top, forming an inverted L-shape.

6. The motor support structure for a direct-drive fan according to claim 5, characterized in that: The bottom support also includes a reinforcing rib, the upper end of which is connected to the second support plate and the lower end of which is connected to the first support plate.

7. The motor support structure for a direct-drive fan according to claim 6, characterized in that: The reinforcing rib is in the shape of a right triangle. The reinforcing rib is vertically arranged and is perpendicular to the first support plate and the second support plate, respectively. The two adjacent right-angled sides of the reinforcing rib are connected to the first support plate and the second support plate, respectively.

8. The motor support structure for a direct-drive fan according to claim 7, characterized in that: The angle between the hypotenuse of the reinforcing rib and the first support plate is greater than the angle between the hypotenuse and the second support plate.

9. The motor support structure for a direct-drive fan according to claim 1, characterized in that: The second support plate is provided with a plurality of threaded holes at intervals, and a tightening bolt corresponding to each of the threaded holes is installed on the second support plate. Each of the threaded holes is vertically arranged, and each of the tightening bolts can pass through the corresponding threaded hole and tighten upward against the bottom surface of the motor.

10. The motor support structure for a direct-drive fan according to claim 9, characterized in that: The second support plate is provided with a plurality of positioning holes at intervals, and a fixing nut is welded into each positioning hole. The fixing nut is used to form the threaded hole.

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