Adjustable rear end cover for explosion-proof motor

By designing an adjustable rear end cover on the explosion-proof motor, the flap type cover blocking assembly and drive assembly control the on and off of the heat dissipation hole, the problem of external impurities entering is solved, and efficient heat dissipation when heat dissipation is needed is achieved. Impurity protection.

CN222321240UActive Publication Date: 2025-01-07JIANGSU HT MOTOR CO LTD
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Patent Information

Application Number
CN202420694694.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-07
Publication Date
2025-01-07
Estimated Expiration
2034-04-07

AI Technical Summary

Technical Problem

When the explosion-proof motor stops working, external impurities can easily enter the motor through the heat dissipation hole, affecting the heat dissipation and motor performance.

Method used

An adjustable rear end cover is designed, using a flip-type shielding assembly and drive assembly. The push frame and shielding plate are driven by an electric push rod to flip the heat dissipation hole, controlling the on and off of the heat dissipation hole to ensure that impurities are blocked when heat dissipation is not dissipated. Enter.

Benefits of technology

It effectively reduces the possibility of impurities entering the motor, and at the same time reduces the barrier holes when heat dissipation is required to ensure the motor heat dissipation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of explosion-proof motor protection, and discloses an adjustable rear end cover for an explosion-proof motor, which comprises a rear end cover, the rear end cover is arranged at the tail section of the explosion-proof motor, and a plurality of groups of heat dissipation holes are formed in one side, far away from the explosion-proof motor, of the rear end cover; the flip cover type shielding assemblies are located at the positions, close to the heat dissipation holes, of the outer side wall of the rear end cover, the number of the flip cover type shielding assemblies is multiple, and each flip cover type shielding assembly comprises a connecting part arranged on the side wall of the rear end cover in a sliding mode, a shielding part rotationally arranged on the connecting part and a flip guide part arranged at the position, close to the shielding part, of the rear end cover; the shielding part abuts against the overturning guide part. The driving assembly is located at the position, close to the flip type shielding assembly, of the side wall of the rear end cover, the driving assembly comprises a pushing part and a power unit, the pushing part and the power unit are arranged on the side wall of the rear end cover, and the pushing part is connected with the connecting part. The explosion-proof motor has the effect of reducing the possibility that external impurities enter the explosion-proof motor from the heat dissipation holes.
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Description

Technical Field

[0001] The present application relates to the technical field of explosion-proof motor protection, and in particular to an adjustable rear end cover for an explosion-proof motor. Background Art

[0002] Explosion-proof motors are motors that can be used in flammable and explosive places and do not generate sparks during operation. Explosion-proof motors are mainly used in coal mines, oil and gas, petrochemical and chemical industries. In addition, they are also widely used in textiles, metallurgy, city gas, transportation, grain and oil processing, papermaking, medicine and other sectors. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors and other transmission machinery.

[0003] Explosion-proof motors generally include a housing and a rotating shaft. The housing includes a shell, a front cover and a rear cover. The front cover and the rear cover are respectively installed at both ends of the shell, and the rotating shaft is located inside the shell. The rotating shaft and the shell are coaxial. The rotating shaft can rotate around its own axis inside the shell, and the rotating shaft rotates through the front cover.

[0004] In order to facilitate the heat dissipation of the explosion-proof motor, a number of heat dissipation holes are opened on the rear cover, and a heat dissipation fan is installed on the rear cover. The heat dissipation fan blows the hot air out of the explosion-proof motor through the heat dissipation holes to cool the explosion-proof motor. However, when the explosion-proof motor stops working, foreign impurities can easily enter the explosion-proof motor through the heat dissipation holes. When the explosion-proof motor works again, the impurities inside the explosion-proof motor can easily affect the heat dissipation of the explosion-proof motor. Utility Model Content

[0005] In order to reduce the possibility of external impurities entering the interior of the explosion-proof motor through the heat dissipation holes, the present application provides an adjustable rear end cover for an explosion-proof motor.

[0006] The adjustable rear end cover for explosion-proof motor provided in the present application adopts the following technical solution:

[0007] An adjustable rear end cover for an explosion-proof motor, comprising:

[0008] A rear end cover, which is installed at the end section of the explosion-proof motor, and a side of the rear end cover away from the explosion-proof motor is provided with a plurality of heat dissipation holes;

[0009] A flip-type shielding assembly, the flip-type shielding assembly is located at a position of the outer side wall of the rear end cover close to the heat dissipation holes, the flip-type shielding assembly is provided with a plurality of flip-type shielding assemblies, and the plurality of flip-type shielding assemblies correspond to a plurality of groups of heat dissipation holes one by one, the flip-type shielding assembly comprises a connecting portion slidably arranged on the side wall of the rear end cover, a shielding portion rotatably arranged on the connecting portion, and a flipping guide portion arranged on the rear end cover close to the shielding portion, the shielding portion and the flipping guide portion are in conflict with each other;

[0010] A driving assembly, the driving assembly is located at a position of the side wall of the rear end cover close to the flip-type shielding assembly, the driving assembly comprises a pushing portion and a power unit installed on the side wall of the rear end cover, and the pushing portion is connected to the connecting portion;

[0011] The power unit enables the connecting part to drive the shielding part to move along the distribution direction of the multiple groups of heat dissipation holes through the pushing part. When the shielding part moves, the flipping guide part guides the shielding part to flip the shielding part, thereby controlling the opening and closing of the heat dissipation holes.

[0012] Optionally, several groups of heat dissipation holes are distributed from bottom to top.

[0013] Optionally, the pushing portion includes a pushing frame mounted on the rear end cover and a plurality of adjusting members mounted on the pushing frame, the plurality of adjusting members correspond one to one with the plurality of shielding portions, and the adjusting members are connected to adjacent connecting portions.

[0014] Optionally, the power unit includes an electric push rod mounted on the side wall of the rear end cover, and a push rod end of the electric push rod is connected to the pushing frame.

[0015] Optionally, the pushing frame includes a support plate mounted on the rear end cover and a pushing rod slidingly passing through the support plate, the power unit and the pushing rod are transmission-connected, and the pushing rod is connected to a plurality of the shielding parts via an adjusting member.

[0016] Optionally, a plurality of adjusting members are provided, and the plurality of adjusting members correspond one to one with the plurality of shielding parts, and each of the adjusting members includes two adjusting blocks for clamping the pushing rod, and an adjusting groove is provided on one side of the two adjusting blocks close to each other, and the inner wall of the adjusting groove abuts against the pushing rod, and the two adjusting blocks are detachably connected.

[0017] Optionally, the flip guide portion includes a guide block installed on the rear end cover near the heat dissipation holes, the guide block is located between two adjacent groups of heat dissipation holes, and the distance between the guide block and the rear end cover gradually increases in a direction from approaching the shielding portion to away from the shielding portion.

[0018] Optionally, a wave groove is provided on the side wall of the adjustment block, and the connecting part includes a connecting block slidably mounted on the rear end cover and a toggle bar mounted on the connecting block, the toggle bar and the wave groove are plug-fitted together, and the connecting block is rotatably connected to the shielding part on one side away from the toggle bar.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When the explosion-proof motor needs to dissipate heat, the electric push rod moves the push frame along the distribution direction of the multiple groups of heat dissipation holes. The push rod on the push frame makes the connecting part slide on the rear end cover through the adjusting piece. The connecting part drives the shielding part to move in the direction close to the guide block, and guides the shielding part through the guide block, so that the shielding part flips in the process of moving toward the guide block, thereby reducing the possibility of the heat dissipation holes being covered; when the explosion-proof motor stops dissipating heat, the electric push rod resets the shielding part through the push frame again, so that the shielding part blocks the heat dissipation holes, thereby reducing the possibility of external impurities entering the interior of the explosion-proof motor from the heat dissipation holes.

[0021] 2. When installing the adjustment parts, place the two adjustment blocks on the push rod according to the position of the connecting block, and clamp the push rod with the two adjustment blocks to improve the convenience of placing the adjustment blocks, and make the inner wall of the adjustment groove on the adjustment block fit with the push rod, so as to facilitate improving the connection stability of the adjustment block. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram showing the heat dissipation state of an explosion-proof motor in an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram showing the closed state of the explosion-proof motor in the embodiment of the present application.

[0024] Figure 3 It is a schematic diagram showing the relative positions of the flip-type shielding assembly and the driving assembly in the embodiment of the present application.

[0025] Figure 4 It is a schematic diagram of the shielding part structure in the embodiment of the present application.

[0026] Figure 5 It is a schematic diagram of the connection structure in the embodiment of the present application.

[0027] Figure 6 It is a schematic diagram of the adjustment block structure in the embodiment of the present application.

[0028] Description of reference numerals:

[0029] 1. Flip-type shielding assembly; 11. Shielding part; 111. Shielding plate; 112. Rotating rod; 12. Connecting part; 121. Connecting block; 122. Toggle bar; 123. Rotating hole; 13. Flipping guide part; 2. Driving assembly; 21. Pushing part; 211. Pushing frame; 2111. Support plate; 2112. Pushing plate; 2113. Pushing rod; 212. Adjusting member; 2121. Adjusting block; 2122. Adjusting slot; 2123. Toggle slot; 22. Power unit; 3. Rear end cover; 31. Heat dissipation hole. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 6 This application is described in further detail.

[0031] The embodiment of the present application discloses an adjustable rear end cover for an explosion-proof motor.

[0032] The rear end cover 3 is fixedly installed at the rear end of the explosion-proof motor, a cooling fan is installed inside the rear end cover 3, and a plurality of cooling holes 31 are opened on the side of the rear end cover 3 away from the explosion-proof motor. The plurality of cooling holes 31 are evenly opened in a plurality of groups from top to bottom, and each group of cooling holes 31 is distributed in a plurality of cooling holes 31 from left to right. When the explosion-proof motor needs to dissipate heat, the cooling fan discharges the heat from the cooling holes 31 to the outside of the explosion-proof motor.

[0033] An adjustable rear end cover for an explosion-proof motor comprises a flip-type shielding assembly 1 and a driving assembly 2. The flip-type shielding assembly 1 and the driving assembly 2 are both mounted on the side wall of the rear end cover 3, and the flip-type shielding assembly 1 and the side wall of the rear end cover 3 are rotatably connected, and the driving assembly 2 is used to drive the flip-type shielding assembly 1 to rotate.

[0034] When the explosion-proof motor needs to dissipate heat, the driving component 2 causes the flip-type shielding component 1 to flip in a direction away from the rear end cover 3, thereby reducing the possibility that the heat dissipation hole 31 is blocked. When the explosion-proof motor does not need to dissipate heat, the driving component 2 drives the flip-type shielding component 1 to flip in a direction close to the rear end cover 3, so that the flip-type shielding component 1 blocks the heat dissipation hole 31, thereby reducing the possibility that external impurities enter the interior of the explosion-proof motor through the heat dissipation hole 31.

[0035] The flip-type shielding assembly 1 is provided with a plurality of flip-type shielding assemblies 1, and the plurality of flip-type shielding assemblies 1 correspond to the plurality of groups of heat dissipation holes 31 one by one. Each flip-type shielding assembly 1 comprises a shielding portion 11, a connecting portion 12 and a flip guide portion 13. The shielding portion 11 comprises a shielding plate 111 and a rotating rod 112 mounted at both ends of the shielding plate 111. The length direction of the shielding plate 111 is consistent with the distribution direction of the plurality of heat dissipation holes 31 in the same group.

[0036] There are two connecting parts 12, both of which are mounted on the side wall of the rear cover 3, and the two groups of connecting parts 12 are respectively located at the two ends of the shielding part 11. Each connecting part 12 includes a connecting block 121 and a toggle bar 122 fixedly mounted on the side of the connecting block 121 away from the shielding plate 111. A rotating hole 123 is opened on the side of the connecting block 121 close to the shielding plate 111, and the rotating rod 112 and the adjacent rotating hole 123 are rotatably matched. The connecting block 121 and the rear cover 3 are slidably matched.

[0037] The flip guide part 13 is fixedly mounted at a position of the rear end cover 3 close to the shielding part 11. The flip guide part 13 is a guide block. The distance between the guide block and the rear end cover 3 gradually increases along the direction from approaching the corresponding shielding part 11 to away from the corresponding shielding plate 111.

[0038] The shielding plate 111 is in conflict with the guide block. To facilitate the flipping of the shielding plate 111 , arc surfaces are provided on the sides of the shielding plate 111 in the length direction.

[0039] The driving assembly 2 includes a pushing part 21 and a power unit 22. The pushing part 21 includes a pushing frame 211 and an adjusting member 212. The pushing frame 211 includes a support plate 2111, a pushing plate 2112 and a pushing rod 2113. Two support plates 2111 are provided, and the two support plates 2111 are parallel to each other, and the two support plates 2111 are perpendicular to the rear end cover 3. Two pushing rods 2113 are provided, and the two pushing rods 2113 are respectively located near the two ends of the shielding part 11, and each pushing rod 2113 is slidably passed through the two supporting plates 2111. The pushing plate 2112 is located at the end of the two pushing rods 2113, and the pushing plate 2112 and the ends of the two pushing rods 2113 are fixedly connected.

[0040] The adjusting member 212 is mounted on the pushing rod 2113 . There are a plurality of adjusting members 212 . The adjusting members 212 are distributed along the length direction of the pushing rod 2113 , and the adjusting members 212 correspond to the shielding plates 111 one by one.

[0041] To facilitate the installation of the adjusting member 212, the adjusting member 212 includes two adjusting blocks 2121, which clamp the pushing rod 2113, and the two adjusting blocks 2121 are detachably fixedly connected by screws. At the same time, in order to improve the working stability of the adjusting member 212, an adjusting groove 2122 is provided on the side where the two adjusting blocks 2121 are close to each other. The adjusting groove 2122 is arranged in an arc shape, and the arc center of the adjusting groove 2122 is located on the side of the adjusting block 2121 close to the pushing rod 2113, and the inner wall of the adjusting groove 2122 is in contact with the outer peripheral surface of the pushing rod 2113.

[0042] A toggle groove 2123 is formed on one side of the two adjusting blocks 2121 that are close to each other, and the toggle bar 122 and the toggle groove 2123 are plugged and matched.

[0043] The power unit 22 is fixedly mounted on the rear end cover 3 near the push plate 2112 . In the embodiment of the present application, the power unit 22 is an electric push rod, and the push rod end of the electric push rod is fixedly connected to the push plate 2112 .

[0044] The implementation principle of an adjustable rear end cover for an explosion-proof motor in the embodiment of the present application is as follows: when the explosion-proof motor needs to dissipate heat, the electric push rod makes the two push rods 2113 move synchronously through the push plate 2112. During the movement of the push rod 2113, the two support plates 2111 jointly guide and limit the two push rods 2113. During the movement of the push rod 2113, the adjustment block 2121 on the push rod 2113 drives the toggle bar 122 to move through the inner wall of the toggle slot 2123. The toggle bar 122 drives the shielding plate 111 to move through the connecting block 121. During the movement of the shielding plate 111, the guide block guides the shielding plate 111 to flip the shielding plate 111, thereby reducing the possibility that the shielding plate 111 affects the heat dissipation of the adjacent heat dissipation hole 31. When the heat dissipation hole 31 needs to be closed, the electric push rod drives the shielding plate 111 to reset again, thereby reducing the possibility that foreign impurities enter the interior of the explosion-proof motor from the heat dissipation hole 31.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable rear end cover for an explosion-proof motor, characterized in that: include; A rear end cover (3), the rear end cover (3) being mounted on the rear end section of the explosion-proof motor, and a plurality of groups of heat dissipation holes (31) being provided on a side of the rear end cover (3) away from the explosion-proof motor; A flip-type shielding assembly (1), the flip-type shielding assembly (1) is located at a position on the outer wall of the rear end cover (3) close to the heat dissipation hole (31), the flip-type shielding assembly (1) is provided with a plurality of flip-type shielding assemblies (1), the plurality of flip-type shielding assemblies (1) and the plurality of groups of heat dissipation holes (31) correspond one to one, the flip-type shielding assembly (1) comprises a connecting portion (12) slidably mounted on the side wall of the rear end cover (3), a shielding portion (11) rotatably mounted on the connecting portion (12), and a flip guide portion (13) mounted on the rear end cover (3) close to the shielding portion (11), the shielding portion (11) and the flip guide portion (13) being in contact with each other; A driving assembly (2), the driving assembly (2) being located at a position on the side wall of the rear end cover (3) close to the flip-type shielding assembly (1), the driving assembly (2) comprising a pushing portion (21) and a power unit (22) mounted on the side wall of the rear end cover (3), the pushing portion (21) being connected to the connecting portion (12); The power unit (22) causes the connecting portion (12) to drive the shielding portion (11) to move along the distribution direction of the plurality of groups of heat dissipation holes (31) through the pushing portion (21); when the shielding portion (11) moves, the flipping guide portion (13) guides the shielding portion (11) to flip the shielding portion (11), thereby controlling the opening and closing of the heat dissipation holes (31).

2. The adjustable rear end cover for explosion-proof motor according to claim 1, characterized in that: A plurality of groups of heat dissipation holes (31) are distributed in a direction from bottom to top.

3. The adjustable rear end cover for explosion-proof motor according to claim 2, characterized in that: The pushing portion (21) comprises a pushing frame (211) mounted on the rear end cover (3) and a plurality of adjusting members (212) mounted on the pushing frame (211); the plurality of adjusting members (212) correspond to the plurality of shielding portions (11) in a one-to-one manner, and the adjusting members (212) are connected to adjacent connecting portions (12).

4. The adjustable rear end cover for explosion-proof motor according to claim 3, characterized in that: The power unit (22) comprises an electric push rod mounted on the side wall of the rear end cover (3), and the push rod end of the electric push rod is connected to the push frame (211).

5. The adjustable rear end cover for explosion-proof motor according to claim 3, characterized in that: The pushing frame (211) comprises a support plate (2111) mounted on the rear end cover (3) and a pushing rod (2113) slidably penetrating the support plate (2111); the power unit (22) and the pushing rod (2113) are transmission-connected; and the pushing rod (2113) is connected to a plurality of the shielding portions (11) via an adjusting member (212).

6. The adjustable rear end cover for explosion-proof motor according to claim 5, characterized in that: A plurality of the adjusting members (212) are provided, and the plurality of the adjusting members (212) correspond to the plurality of the shielding portions (11) in a one-to-one manner. Each of the adjusting members (212) comprises two adjusting blocks (2121) for clamping the pushing rod (2113). An adjusting groove (2122) is provided on one side of the two adjusting blocks (2121) close to each other. The inner wall of the adjusting groove (2122) contacts the pushing rod (2113), and the two adjusting blocks (2121) are detachably connected.

7. The adjustable rear end cover for explosion-proof motor according to claim 1, characterized in that: The flip guide portion (13) comprises a guide block mounted on the rear end cover (3) near the heat dissipation holes (31); the guide block is located between two adjacent groups of heat dissipation holes (31); and the distance between the guide block and the rear end cover (3) gradually increases in a direction from approaching the shielding portion (11) to moving away from the shielding portion (11).

8. The adjustable rear end cover for explosion-proof motor according to claim 6, characterized in that: A wave groove (2123) is provided on the side wall of the adjusting block (2121); the connecting portion (12) comprises a connecting block (121) slidably mounted on the rear end cover (3) and a toggle bar (122) mounted on the connecting block (121); the toggle bar (122) and the wave groove (2123) are plug-fitted together; a side of the connecting block (121) away from the toggle bar (122) is rotatably connected to the shielding portion (11).