A vertical motor fan guard

Abstract

The utility model discloses a vertical motor fan protective cover, including cover and at least three support poles, and the upper end of support pole is detachably connected with cover, and the lower part of support pole includes at least one screw hole for connecting with vertical motor. The utility model discloses vertical motor fan protective cover's component quantity is few, simple structure, low in cost, and the lower part of support pole can be fixed on the outside of vertical motor tail cover through the tail cover fixing screw of vertical motor, and the difficulty of vertical motor fan protective cover installation and removal is small, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to motor protection devices, and more particularly to a vertical motor fan protective cover. Background Technology

[0002] Installing a protective cover above a vertical motor to prevent foreign objects from entering the fan is a very important and common industrial safety requirement. The core function of the vertical motor fan protective cover is to prevent foreign objects such as rainwater, tools, bolts, nuts, debris, gloves, leaves, and insects from entering, while ensuring effective heat dissipation of the motor fan, thereby avoiding equipment damage, personal injury, and production interruption.

[0003] The utility model patent with patent number CN202420837040.0 discloses a new type of vertical motor with a rain cover for mining, including a motor body, a rain cover, a rain cover, a self-locking mechanism, and a support mechanism. The rain cover is fitted at the lower end of the motor body and has a sleeve interface. Multiple slots are distributed on the upper end of the rain cover. Self-locking mechanisms are provided at the left and right ends of the rain cover. The rain cover is provided above the rain cover and has a groove. The support mechanism is provided in the groove. The edge of the groove is provided with a rod corresponding to each slot. The rod has a sliding groove. A translation frame is provided between each pair of adjacent rods. The translation frame is connected to a folded mesh. This utility model has many components and a complex structure. The motor needs to be disassembled before installing or removing the rain cover, which makes disassembly and assembly difficult. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a vertical motor fan protective cover that is simple in structure and easy to disassemble and assemble.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is a vertical motor fan protective cover, including a cover and at least three support rods, the upper end of the support rods being detachably connected to the cover; the lower part of the support rods includes at least one screw hole for connecting to a vertical motor.

[0006] The vertical motor fan guard described above includes a slot at the lowest end of the support rod, wherein the screw hole connected to the vertical motor is a downward-opening slot.

[0007] The vertical motor fan guard described above includes a plurality of through holes in the screw holes connected to the vertical motor. The plurality of through holes are arranged above the slot and are arranged separately in the vertical direction.

[0008] The vertical motor fan protective cover described above includes a top plate and an annular side plate. The side plate includes a snap-fit ​​hole corresponding to the support rod. The inner side of the top of the support rod includes an elastic hook. The elastic hook extends from the outside to the inside into the snap-fit ​​hole and snaps into the snap-fit ​​hole.

[0009] The vertical motor fan protective cover described above has a petal-shaped snap-fit ​​hole with a hinged circular hole in the center. The upper and lower ends of the hinged circular hole each have an outwardly protruding arc-shaped groove. The elastic hook includes a hinge shaft with a vertical elastic groove. The two ends of the hinge shaft's inner side each have an outwardly protruding arc-shaped hook. The inner side of the support rod includes a protruding locking ridge below the elastic hook. After the support rod is connected to the cover, the locking ridge is engaged with the lower edge of the cover's annular side plate.

[0010] The vertical motor fan protective cover described above has an L-shaped support rod, including a horizontal rod and a vertical rod, with the upper end of the vertical rod connected to the outer end of the horizontal rod. The screw holes for connecting to the vertical motor are located at the lower part of the vertical rod. The horizontal rod includes a plurality of mounting holes for connecting to the cover, which are equidistantly arranged along the axial direction of the horizontal rod. The bottom of the cover includes a connecting part corresponding to the support rod and arranged separately along the circumference of the cover. The connecting part includes a plurality of mounting positioning posts equidistantly arranged radially along the cover, with the spacing between the mounting positioning posts equal to the spacing of the mounting holes on the horizontal rod. The plurality of mounting positioning posts of the connecting part are inserted into the plurality of mounting holes corresponding to the support rod, and the mounting positioning posts and mounting holes are interference-fitted to fix the support rod under the cover.

[0011] The vertical motor fan protective cover described above includes a top plate and an annular side plate. The connecting part includes a strip-shaped boss that protrudes downward from the top plate and is arranged radially along the cover. The mounting positioning post extends downward from the bottom surface of the strip-shaped boss. The top surface of the support rod crossbar is supported by the bottom surface of the strip-shaped boss.

[0012] The vertical motor fan protective cover described above has a side plate whose bottom surface is lower than the bottom surface of the boss, and the side plate includes a crossbar clearance groove corresponding to the support rod; the crossbar clearance groove is closed by a removable baffle.

[0013] The vertical motor fan protective cover described above has four support rods.

[0014] This utility model of a vertical motor fan protective cover has few components, a simple structure, and low cost; the lower part of the support rod can be fixed to the outside of the vertical motor tail cover by the fixing screws of the vertical motor tail cover, making the vertical motor fan protective cover easy to install and disassemble and convenient to maintain. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a perspective view of the installation of the vertical motor fan protective cover according to Embodiment 1 of this utility model.

[0017] Figure 2This is a front view of the installation of the vertical motor fan protective cover according to Embodiment 1 of this utility model.

[0018] Figure 3 This is an exploded view of the installation of the vertical motor fan protective cover according to Embodiment 1 of this utility model.

[0019] Figure 4 This is a front view of the vertical motor fan protective cover of Embodiment 1 of this utility model.

[0020] Figure 5 This is a perspective view of the vertical motor fan protective cover of Embodiment 1 of this utility model.

[0021] Figure 6 yes Figure 4 AA section view in the image.

[0022] Figure 7 This is the front view of the support rod in Embodiment 1 of this utility model.

[0023] Figure 8 This is a left view of the support rod in Embodiment 1 of this utility model.

[0024] Figure 9 This is a perspective view of the support rod in Embodiment 1 of this utility model.

[0025] Figure 10 This is a top view of the support rod in Embodiment 1 of this utility model.

[0026] Figure 11 This is a cross-sectional view of the cover of Embodiment 1 of this utility model.

[0027] Figure 12 This is a schematic diagram of step 1 of the support rod installation in Embodiment 1 of this utility model.

[0028] Figure 13 yes Figure 12 BB section view in the middle.

[0029] Figure 14 This is a schematic diagram of step 2 of the support rod installation in Embodiment 1 of this utility model.

[0030] Figure 15 This is a schematic diagram of step 3 of the support rod installation in Embodiment 1 of this utility model.

[0031] Figure 16 This is a schematic diagram of the support rod being installed in place according to Embodiment 1 of this utility model.

[0032] Figure 17 This is a perspective view of the installation of the vertical motor fan protective cover according to Embodiment 2 of this utility model.

[0033] Figure 18This is a front view of the installation of the vertical motor fan protective cover according to Embodiment 2 of this utility model.

[0034] Figure 19 This is an exploded view of the installation of the vertical motor fan protective cover according to Embodiment 2 of this utility model.

[0035] Figure 20 This is a front view of the vertical motor fan protective cover of Embodiment 2 of this utility model.

[0036] Figure 21 This is a perspective view of the vertical motor fan protective cover of Embodiment 2 of this utility model.

[0037] Figure 22 yes Figure 20 CC section view in the image.

[0038] Figure 23 This is a perspective view of the support rod in Embodiment 2 of this utility model.

[0039] Figure 24 This is a perspective view of the cover of Embodiment 2 of this utility model.

[0040] Figure 25 yes Figure 22 DD section view in the image.

[0041] Figure 26 This is a perspective view of one of the assembly methods of the vertical motor fan protective cover in Embodiment 2 of this utility model.

[0042] Figure 27 This is a perspective view of the second assembly method of the vertical motor fan protective cover in Embodiment 2 of this utility model.

[0043] Figure 28 This is a perspective view of the third assembly method of the vertical motor fan protective cover in Embodiment 2 of this utility model. Detailed Implementation

[0044] The structure of the vertical motor fan protective cover in Embodiment 1 of this utility model is as follows: Figures 1 to 16 As shown, the vertical motor fan guard 100 includes a cover 10 and four support rods 20, each support rod 20 being a straight rod. The cover 10 includes a top plate 11 and an annular side plate 12. The upper end of the support rod 20 is detachably connected to the side plate 12 of the cover 10. The lower part of the support rod 20 includes four screw holes 21 for connecting to the vertical motor.

[0045] The four screw holes 21 include a U-shaped slot 21A located at the lowest end of the support rod 20, with the lower end of the U-shaped slot 21A being open.

[0046] The four screw holes 21 also include three flat elongated through holes 21B, which are arranged above the U-shaped slot hole 21A and are arranged separately along the vertical direction of the support rod 20.

[0047] The side plate 12 includes snap-fit ​​holes 13 corresponding to the support rod 20, and the snap-fit ​​holes 13 are evenly distributed along the circumference of the cover 10. There is an elastic hook 22 on the inner side of the top of the support rod 20, and the elastic hook 22 extends from the outside to the inside into the snap-fit ​​hole 13 and snaps into the snap-fit ​​hole 13.

[0048] Specifically, the snap-fit ​​hole 13 is petal-shaped, with a hinged circular hole 131 in the center. Each end of the hinged circular hole 131 has an outwardly protruding arc-shaped groove 132. The elastic hook 22 includes a hinge shaft 221, which includes a vertical elastic groove 222. Each end of the hinge shaft 221 along its inner side in the transverse direction includes an outwardly protruding arc-shaped hook head 223. The inner side of the support rod 20 has two protruding locking ridges 23 below the elastic hook 22. After the support rod 20 is connected to the cover 10, the locking ridges 23 are engaged with the lower edge of the annular side plate 12 of the cover 10.

[0049] The assembly process of the support rod 20 and the cover 10 of the vertical motor fan protective cover in Embodiment 1 of this utility model is as follows: Figures 12 to 16 As shown.

[0050] 1) Lay the support rod 20 flat, with the elastic hook 22 on the inner side of the top of the support rod 20 facing the snap-fit ​​hole 13 on the side plate 12 of the cover. The long axis of the elastic hook 22 is vertical. Figure 12 and Figure 13 As shown; 2) Push the elastic hook 22 of the support rod 20 into the snap-fit ​​hole 13 on the cover side plate 12, such as... Figure 14 As shown; 3) Rotate the support rod 20 with the hinge axis 221 of the elastic hook 22 of the support rod 20 as the center of rotation, as follows: Figure 15 As shown; 4) Rotate the support rod 20 to a position perpendicular to the bottom surface of the cover 10, and rotate the long axis of the elastic hook 22 to the horizontal direction until the locking edge 23 is locked at the lower edge of the annular side plate 12 of the cover 10, thus completing the assembly of one support rod 20 with the cover 10. Repeat steps 1-4 to complete the assembly of all support rods 20 with the cover 10.

[0051] like Figures 1 to 3As shown, in Embodiment 1 of this utility model, the vertical motor fan guard 100 is fixed above the tail cover 31 of the vertical motor 30 by four tail cover screws 32 of the vertical motor. During installation, loosen the four tail cover screws 32 of the vertical motor, insert the U-shaped slot 21A of the assembled vertical motor fan guard 100 support rod 20 with the opening facing down into the gap between the head of the tail cover screw 32 and the tail cover 31, and then tighten the four tail cover screws 32 of the vertical motor. The tail cover screws 32 firmly fix the lower end of the support rod 20 of the vertical motor fan guard 100 to the outside of the tail cover 31, and the vertical motor fan guard 100 covers the ventilation mesh 33 of the tail cover 31 of the vertical motor 30.

[0052] The structure of the vertical motor fan protective cover in Embodiment 2 of this utility model is as follows: Figures 17 to 28 As shown, the vertical motor fan protective cover 100 also includes a cover 10 and four support rods 20. The main difference between Embodiment 2 and Embodiment 1 is that the connection structure between the support rods 20 and the cover 10 is different.

[0053] In Embodiment 2, the support rod 20 is L-shaped, comprising a horizontal rod 20B and a vertical rod 20A, with the upper end of the vertical rod 20A connected to the outer end of the horizontal rod 20B. The lower structure of the vertical rod 20A is the same as that of the lower structure of the support rod 20 in Embodiment 1, both including four screw holes 21 for connecting to a vertical motor. Among the four screw holes 21 for connecting to the vertical motor, there is a U-shaped slot 21A located at the lowermost end of the vertical rod 20A, with the lower end of the U-shaped slot 21A open. The four screw holes 21 also include three elongated flat through holes 21B, which are arranged above the U-shaped slot 21A and are separated along the vertical direction of the support rod 20.

[0054] The crossbar 20B has five mounting holes 24 that connect to the cover 10. The five mounting holes 24 that connect to the cover 10 are arranged at equal intervals along the axial direction of the crossbar 20B.

[0055] The cover 10 also includes a top plate 11 and an annular side plate 12. The bottom of the cover 10 includes four connecting portions 10A corresponding to the support rod 20 and evenly distributed circumferentially along the cover 10. Each connecting portion 10A includes a strip-shaped boss 14 protruding downwards from the top plate 11 and arranged radially along the cover 10, and seven mounting positioning posts 15 equidistantly arranged radially along the cover 10. The mounting positioning posts 15 extend downwards from the bottom surface of the strip-shaped boss 14. In this embodiment, the strip-shaped boss 14 consists of three protruding ribs.

[0056] There is a clearance groove 25 for mounting a positioning post at the connection between the upper end of the vertical bar 20A and the outer end of the horizontal bar 20B.

[0057] The spacing between the mounting positioning posts 15 is equal to the spacing between the mounting fixing holes 24 on the crossbar 20B. When the crossbar 20B of the support rod 20 is connected to the cover 10, the multiple mounting positioning posts 15 of the connecting part 10A are inserted into the multiple mounting fixing holes 24 corresponding to the support rod 20. The top surface of the crossbar 20B of the support rod 20 uses the bottom surface of the strip boss 14 as the support surface (positioning surface). The mounting fixing holes 24 and the mounting positioning posts 15 are interference-fitted to fix the support rod 20 under the cover 10.

[0058] In this embodiment, the bottom surface of the side plate 12 is lower than the bottom surface of the boss 14. The side plate 12 includes a crossbar clearance groove 121 corresponding to the support rod 20. The clearance groove 121 is closed by a removable baffle 122. When the support rod 20 is connected to the cover 10, if the vertical rod of the support rod 20 is located inside the side plate 12, the baffle 122 on the clearance groove 121 does not need to be removed; if the vertical motor is relatively large and the vertical rod of the support rod 20 needs to be installed on the outside of the side plate 12, the baffle 122 on the clearance groove 121 can be removed.

[0059] Figure 26 The figure shows the most typical assembly method of the four support rods 20 and the cover 10 of the vertical motor fan protective cover of Embodiment 2 of this utility model. The vertical rod of the support rod 20 is close to the inner side of the side plate 12, and the baffle 122 on the clearance groove 121 does not need to be removed; the outermost mounting positioning post 15 on the connecting part 10A of the cover 10 is located in the clearance groove 25 at the connection part of the vertical rod 20A and the horizontal rod 20B.

[0060] Figure 27 The figure shows the assembly method of the vertical motor fan protective cover of embodiment 2 of this utility model, in which four support rods 20 are moved inward along the radial direction of the cover 10 to accommodate vertical motors with small radial dimensions. The vertical rods of the support rods 20 are away from the inner side of the side plate 12, and the baffle 122 on the clearance groove 121 does not need to be removed. A mounting positioning post 15 on the connecting part 10A of the cover 10 is located in the clearance groove 25 at the connection part of the vertical rod 20A and the horizontal rod 20B.

[0061] Figure 28 The figure shows the assembly method of the vertical motor fan protective cover of embodiment 2 of this utility model, in which the four support rods 20 are moved outward along the radial direction of the cover 10 to accommodate vertical motors with large radial dimensions. The vertical rods of the support rods 20 protrude outward from the side plate 12, so the baffle 122 on the clearance groove 121 needs to be removed before the support rods can be installed. At this time, the horizontal rods 20B of the support rods 20 are located in the clearance groove 121.

[0062] The method for installing and removing the vertical motor fan guard on the vertical motor in Embodiment 2 of this utility model is the same as the method for installing and removing the vertical motor fan guard on the vertical motor in Embodiment 1.

[0063] The above embodiments of this utility model have the following beneficial effects: (a) Simplified structure, reducing production and maintenance costs: The vertical motor fan protective cover of the present invention, as described above, consists only of a cover and four support rods. Compared to the prior art (which includes multiple complex components such as a motor body, rainproof base, rainproof cover, self-locking mechanism, and support mechanism) with patent number CN202420837040.0, the number of components is significantly reduced, resulting in a simpler structure. This simplified structure not only reduces raw material consumption and processing difficulty during production, thus lowering production costs, but also facilitates component replacement and repair during subsequent use, reducing maintenance costs.

[0064] Whether it is the snap-fit ​​connection between the straight support rod and the cover in Embodiment 1, or the interference fit connection between the L-shaped support rod and the cover in Embodiment 2, both have eliminated the complex self-locking mechanism and support mechanism in the prior art, further simplifying the overall assembly structure, reducing assembly steps, and improving production assembly efficiency.

[0065] (ii) Easy to assemble and disassemble, improving work efficiency and safety: Installation without disassembling the motor: In the above embodiments of this utility model, the lower part of the support rod is fixed to the outside of the tail cover of the vertical motor by the tail cover fixing screws. During installation, simply loosen the tail cover fixing screws, align the screw hole at the lower part of the support rod (such as the U-shaped slot hole 21A in embodiments 1 and 2) with the screw and insert it, then tighten the screw to complete the installation. Similarly, during disassembly, simply loosen the screws to remove the protective cover. Unlike the prior art, there is no need to disassemble the motor first, which greatly reduces the difficulty of installation and disassembly, saves working time, and improves the efficiency of equipment maintenance and repair.

[0066] The connection between the cover and the support rod is flexible and easy to operate. In Example 1, the petal-shaped snap-fit ​​hole on the side plate of the cover engages with the elastic hook at the top of the support rod. The connection can be completed in three steps: "push in - rotate - lock". The operation is simple and does not require complicated tools. One person can quickly complete the assembly. At the same time, the snap-fit ​​is locked on the lower edge of the annular side plate of the cover to ensure a stable connection and prevent loosening during use.

[0067] In Example 2, the mounting holes of the L-shaped support rod crossbar are interference-fitted with the mounting positioning posts of the cover connection part, and the spacing between the mounting positioning posts is consistent with the spacing between the mounting holes. A stable connection can be achieved simply by inserting the positioning posts into the fixing holes. In addition, the crossbar clearance groove of the side plate can be adapted to vertical motors of different sizes by removing the baffle. When the radial dimension of the motor is large, the support rod vertical bar can be installed on the outside of the side plate by removing the baffle, without replacing the entire protective cover, which further improves the flexibility and applicability of disassembly and assembly.

[0068] (III) Reliable protective performance, ensuring the safety of equipment and personnel: This utility model's protective cover effectively prevents foreign objects from entering the motor by covering the ventilation mesh of the vertical motor's tail cover. This avoids damage to the motor fan and internal components, ensuring the motor's normal operation, reducing production interruptions due to equipment failure, and minimizing production losses for the enterprise. The number of support rods (at least three, preferably four) ensures the support stability of the protective cover, resisting certain external impacts and preventing deformation or detachment due to external forces, further enhancing the protective effect. Simultaneously, the stable structure also prevents protective cover components from falling off and injuring surrounding operators, improving safety in industrial production processes.

[0069] (iv) Highly adaptable, suitable for various scenarios and motor specifications The screw holes at the bottom of the support rod (such as downward-opening slots and multiple through holes arranged vertically in Examples 1 and 2) allow the protective cover to accommodate vertical motor tail cover fixing screws of different heights and installation positions. The slots facilitate quick alignment of the screws for installation, while the multiple through holes allow the installation position to be adjusted according to the actual height of the motor tail cover, enhancing the versatility of the protective cover.

[0070] The structure of the L-shaped support rod and the detachable baffle structure of the cover crossbar clearance groove in Example 2 allow the protective cover to flexibly adjust the installation position of the support rod (moving inward or outward) according to the radial dimension of the vertical motor. This eliminates the need to design and manufacture protective covers separately for different specifications of motors, reducing the equipment procurement cost for enterprises. It is suitable for the protection needs of various specifications of vertical motors and expands the application range of the product.

Claims

1. A protective cover for a vertical motor fan, comprising a cover and at least three support rods, characterized in that, The upper end of the support rod is detachably connected to the cover; the lower part of the support rod includes at least one screw hole for connecting to a vertical motor; the support rod is L-shaped, including a horizontal bar and a vertical bar, the upper end of the vertical bar being connected to the outer end of the horizontal bar; the screw hole for connecting to the vertical motor is located at the lower part of the vertical bar; the horizontal bar includes a plurality of mounting holes for connecting to the cover, the plurality of mounting holes for connecting to the cover being equidistantly arranged along the axial direction of the horizontal bar; the bottom of the cover includes a connecting part corresponding to the support rod and arranged separately along the circumference of the cover, the connecting part including a plurality of mounting positioning posts equidistantly arranged along the radial direction of the cover, the spacing between the mounting positioning posts being equal to the spacing of the mounting holes on the horizontal bar; the plurality of mounting positioning posts of the connecting part are inserted into the plurality of mounting holes corresponding to the support rod, the mounting positioning posts and mounting holes being interference-fitted to fix the support rod under the cover.

2. The vertical motor fan protective cover according to claim 1, characterized in that, The screw holes connected to the vertical motor include slots located at the lowest end of the support rod, the slots opening downwards.

3. The vertical motor fan protective cover according to claim 2, characterized in that, The screw holes connected to the vertical motor include a plurality of through holes, which are arranged above the slot and are separated in a vertical direction.

4. The vertical motor fan protective cover according to claim 1, characterized in that, The cover includes a top plate and annular side plates. The side plates include snap-fit ​​holes corresponding to the support rods. The inner side of the top of the support rod includes an elastic hook that extends from the outside to the inside into the snap-fit ​​hole and snaps into the snap-fit ​​hole.

5. The vertical motor fan protective cover according to claim 4, characterized in that, The snap-fit ​​hole is petal-shaped, with a hinged circular hole in the middle. The upper and lower ends of the hinged circular hole each have an outwardly protruding arc-shaped groove. The elastic hook includes a hinge shaft, which includes a vertical elastic groove. The two ends of the hinge shaft on the inner side of the hinge shaft each have an outwardly protruding arc-shaped hook head. The inner side of the support rod includes a protruding snap ridge below the elastic hook. After the support rod is connected to the cover, the snap ridge is snapped into the lower edge of the annular side plate of the cover.

6. The vertical motor fan protective cover according to claim 1, characterized in that, The cover includes a top plate and annular side plates. The connecting part includes a strip-shaped boss that protrudes downward from the top plate and is arranged radially along the cover. The mounting positioning post extends downward from the bottom surface of the strip-shaped boss. The top surface of the support rod crossbar is supported by the bottom surface of the strip-shaped boss.

7. The vertical motor fan protective cover according to claim 1, characterized in that, The bottom surface of the side plate is lower than the bottom surface of the boss, and the side plate includes a crossbar clearance groove corresponding to the support rod; the crossbar clearance groove is closed by a removable baffle.

8. The vertical motor fan protective cover according to claim 1, characterized in that, The connection between the upper end of the vertical bar and the outer end of the horizontal bar includes a clearance groove for installing the positioning post.

9. The vertical motor fan protective cover according to claim 1, characterized in that, The support rods consist of four rods.

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