Vibration damper for explosion-proof motor

Abstract

The utility model relates to the technical field of damping, and discloses a damping device for an explosion-proof motor, and the damping device comprises a rotating seat, the rotating seat is located at a position close to a base, the rotating seat comprises a rotating part and a limiting part arranged near the rotating part, and the limiting part is used for limiting the rotating direction of the rotating part; and the fastening assembly comprises a guide part arranged on the rotating part and a fastening part hinged to the guide part in a sliding mode, and the fastening part is fixedly arranged on the base. The explosion-proof motor has the effect of reducing the possibility of vibration in the working process of the explosion-proof motor.

Description

Technical Field

[0001] This application relates to the field of vibration damping technology, and in particular, to a vibration damping device for an explosion-proof motor. Background Art

[0002] An explosion-proof motor is a type of motor that can be used in flammable and explosive environments and does not generate electric sparks during operation. Existing explosion-proof motors generally include a motor body and a base, and the motor body is fixedly installed on the base.

[0003] To improve the running stability of the explosion-proof motor and the convenience of installing the explosion-proof motor, the explosion-proof motor is generally fixedly installed on a placement plate. When installing the explosion-proof motor, the base is generally placed on the placement plate and then fixedly connected to the placement plate through a bolt and nut assembly. To reduce the possibility of the bolt and nut assembly loosening, an elastic pad is generally installed between the base and the placement plate.

[0004] However, after the explosion-proof motor has been used for a long time, the elastic pad gradually compresses under the gravity of the explosion-proof motor. At this time, the bolt and nut assembly gradually loosens from the base, resulting in vibration of the explosion-proof motor during operation. Utility Model Content

[0005] In order to reduce the possibility of vibration of the explosion-proof motor during operation, this application provides a vibration damping device for an explosion-proof motor.

[0006] The vibration damping device for an explosion-proof motor provided by this application adopts the following technical solution:

[0007] A vibration damping device for an explosion-proof motor, the explosion-proof motor includes a base and a motor body installed on the base. The base is fixedly installed on a placement plate through a bolt and nut assembly, and an elastic pad is placed between the base and the placement plate. The vibration damping device includes:

[0008] A rotating seat, the rotating seat is located near the base. The rotating seat includes a rotating part and a limiting part installed near the rotating part. The limiting part is used to limit the rotation direction of the rotating part;

[0009] A fastening assembly, the fastening assembly includes a guiding part installed on the rotating part and a fastening part slidably hinged on the guiding part. The fastening part is fixedly installed on the base;

[0010] When the explosion-proof motor compresses the elastic pad, the base moves towards the placement plate through the fastening part. The fastening part drives the rotating part to rotate through the guiding part, and the limiting part limits the rotation direction of the rotating part, reducing the possibility of reverse rotation of the rotating part.

[0011] Optionally, the rotating part includes a rotating frame installed on the placing plate and a rotating member rotatably installed on the rotating frame.

[0012] Optionally, the rotating frame includes a fixing plate installed on the placing plate and a fixing shaft installed on the fixing plate. The length direction of the fixing shaft is consistent with the length direction of the base. The rotating member is a rotating cylinder, and the rotating cylinder is rotatably sleeved on the fixing shaft.

[0013] Optionally, the limiting part includes a limiting gear ring installed on the outer peripheral wall of the rotating cylinder and a limiting pawl rotatably installed at a position on the fixing plate close to the limiting gear ring. The limiting pawl is inserted and matched with the tooth gaps between two adjacent limiting teeth of the limiting gear ring.

[0014] Optionally, the guiding part includes a mounting member installed on the rotating part and a guiding member installed on the mounting member. The fastening part is slidably and hingedly matched with the guiding member.

[0015] Optionally, a positioning groove is formed on the outer peripheral wall of the rotating cylinder. The mounting member includes a mounting rod installed inside the positioning groove and a mounting block partially placed inside the positioning groove. The length of the mounting rod is consistent with the length direction of the rotating cylinder, and the mounting rod penetrates through the mounting block.

[0016] Optionally, the guiding member is a guiding strip installed on the mounting member. A guiding groove is formed on the side wall of the guiding strip along the length direction of the guiding strip. The fastening part is slidably and hingedly connected with the guiding groove.

[0017] Optionally, the fastening part includes a fastening block installed on the base and a fastening rod installed on the fastening block. The fastening rod is slidably and hingedly connected with the guiding member.

[0018] In summary, the present application includes at least one of the following beneficial technical effects:

[0019] 1. When the explosion-proof motor compresses the elastic pad, the base drives the fastening part to move towards the placing plate. The fastening part drives the rotating part to rotate through the guiding part. During the rotation of the rotating part, the limiting part synchronously limits the rotating part. The limiting part is used to reduce the possibility of reverse rotation of the rotating part. Thus, it is convenient for the fastening part to limit the base and reduce the possibility of the base moving away from the elastic pad, thereby reducing the possibility of vibration of the explosion-proof motor.

[0020] 2. When the mounting member is fixedly installed inside the positioning groove, the mounting block is placed inside the positioning groove. The mounting block is preliminarily positioned by the groove wall of the positioning groove. Then, the mounting rod penetrates through the mounting block to further limit the mounting block, so as to improve the placement stability and convenience of the mounting block. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the relative position between the embodiment of the present application and the explosion-proof motor.

[0022] Figure 2 It is a schematic diagram of the overall structure of the embodiment of the present application.

[0023] Figure 3 It is a schematic diagram showing the structure of the rotating frame in the embodiment of the present application.

[0024] Figure 4 It is a schematic diagram showing the positional relationship between the limiting part and the rotating part in the embodiment of the present application.

[0025] Explanation of reference numerals:

[0026] 1, rotating seat; 11, rotating part; 111, rotating frame; 1111, fixing plate; 1112, fixing shaft; 112, rotating member; 1121, rotating cylinder; 1122, positioning groove; 12, limiting part; 121, limiting gear ring; 122, limiting pawl; 2, fastening assembly; 21, guiding part; 211, mounting part; 2111, mounting block; 2112, mounting rod; 212, guiding member; 2121, guiding strip; 2122, guiding groove; 22, fastening part; 221, fastening block; 222, fastening rod; 3, base; 4, placing plate; 5, motor body. Detailed implementation manners

[0027] The following further describes the present application in detail with reference to the attached Figures 1 - 4 drawings.

[0028] The embodiment of the present application discloses a vibration damping device for an explosion-proof motor.

[0029] When installing the explosion-proof motor, the base 3 of the explosion-proof motor is fixedly installed on the placing plate 4 through a bolt and nut assembly, and an elastic pad is placed between the base 3 and the placing plate 4. The base 3 presses the elastic pad against the placing plate 4. The vibration damping device is installed on the placing plate 4 at a position close to the base 3, and the vibration damping device is used to limit the movement of the base 3 in the vertical direction.

[0030] A vibration damping device for an explosion-proof motor includes a rotating seat 1 and a fastening assembly 2. The rotating seat 1 includes a rotating part 11 and a limiting part 12. The rotating part 11 is rotationally matched with the placing plate 4, and the limiting part 12 is installed on the placing plate 4 at a position close to the rotating part 11. The limiting part 12 is used to limit the rotation direction of the rotating part 11. The fastening assembly 2 includes a guiding part 21 and a fastening part 22. The guiding part 21 is fixedly installed on the rotating part 11, and the fastening part 22 is fixedly installed on the base 3. The guiding part 21 and the fastening part 22 are slidably hinged and matched.

[0031] When the elastic pad is compressed and installed on the placement plate 4 by the explosion-proof motor, the base 3 drives the fastening part 22 to move towards the placement plate 4. Since the guiding part 21 and the fastening part 22 are slidably hinged, during the downward movement of the fastening part 22, the fastening part 22 drives the guiding part 21 to move, and the guiding part 21 drives the rotating part 11 to rotate. When the rotating part 11 rotates, the limiting part 12 limits the rotating part 11, thereby reducing the possibility of reverse rotation of the rotating part 11. Furthermore, the possibility of the base 3 moving away from the placement plate 4 again is reduced, and the possibility of vibration generated by the repeated vertical movement of the base 3 is reduced.

[0032] The rotating part 11 includes a rotating frame 111 and a rotating member 112.

[0033] The rotating frame 111 includes a fixing plate 1111 and a fixing shaft 1112. The fixing plate 1111 is fixedly installed on the placement plate 4 near the base 3. There are two fixing plates 1111, and the two fixing plates 1111 are arranged in parallel and perpendicular to the placement plate 4 respectively. The fixing shaft 1112 is located between the two fixing plates 1111, and the two ends of the fixing shaft 1112 correspond to the two fixing plates 1111 one by one. The end of the fixing shaft 1112 is fixedly connected to the corresponding fixing plate 1111, and the length direction of the fixing shaft 1112 is the same as the length direction of the base 3.

[0034] The rotating member 112 is a rotating cylinder 1121, and the rotating cylinder 1121 is coaxially sleeved on the outer periphery of the fixing shaft 1112, and the fixing shaft 1112 is rotationally matched with the rotating cylinder 1121.

[0035] There are two limiting parts 12, and the two limiting parts 12 correspond to the two ends of the rotating cylinder 1121. Each limiting part 12 includes a limiting gear ring 121 and a limiting pawl 122.

[0036] The limiting gear ring 121 is located on the outer periphery of the rotating cylinder 1121 and is coaxial with the rotating cylinder 1121, and the limiting gear ring 121 is fixedly connected to the rotating cylinder 1121. The limiting pawl 122 is hinged at a position on the fixing plate 1111 close to the limiting gear ring 121, and one end of the limiting pawl 122 close to the limiting gear ring 121 is inserted into the tooth gap between two adjacent teeth of the limiting gear ring 121. When the rotating cylinder 1121 drives the limiting gear ring 121 to rotate, the limiting pawl 122 limits the limiting gear ring 121 through the tooth gap of the limiting gear ring 121, thereby reducing the possibility of reverse rotation of the rotating cylinder 1121. A torsion spring is installed between the limiting pawl 122 and the fixing plate 1111, and the limiting pawl 122 is made to contact the limiting gear ring 121 for a long time through the torsion spring.

[0037] There are two guiding parts 21, and the two guiding parts 21 correspond to the two ends of the rotating cylinder 1121. The guiding part 21 includes a mounting part 211 and a guiding part 212.

[0038] Two positioning grooves 1122 are provided on the outer periphery of the rotating cylinder 1121, and the two positioning grooves 1122 correspond to the two guiding parts 21 one by one. The mounting member 211 includes a mounting block 2111 and a mounting rod 2112. One end of the mounting block 2111 is located in the positioning groove 1122, and one end of the mounting rod 2112 is fixedly installed on the inner wall of the positioning groove 1122. In order to facilitate the installation of the mounting block 2111 and improve the convenience of installing the mounting block 2111, the positioning groove 1122 is a rectangular groove, and the mounting block 2111 is a rectangular block. After the mounting block 2111 is placed in the positioning groove 1122, the inner wall of the positioning groove 1122 performs preliminary positioning on the mounting block 2111. After the mounting block 2111 is placed inside the positioning groove 1122, the mounting rod 2112 penetrates through the mounting block 2111, and the mounting block 2111 is further limited by the mounting rod 2112.

[0039] The guiding member 212 is a guiding strip 2121, and one end of the guiding strip 2121 is fixedly connected to the mounting block 2111. A guiding groove 2122 is formed in the side wall of the guiding strip 2121 along the length direction of the guiding strip 2121. The guiding groove 2122 is a waist-shaped groove and is a through groove.

[0040] The fastening part 22 includes a fastening block 221 and a fastening rod 222. The fastening block 221 is fixedly installed on the base 3 through a bolt and nut assembly. The fastening rod 222 is threadedly connected to the fastening block 221. The fastening rod 222 is horizontally arranged, and the end of the fastening rod 222 is located inside the guiding groove 2122. The fastening rod 222 is slidably hinged to the guiding strip 2121 through the guiding groove 2122.

[0041] The implementation principle of a vibration damping device for an explosion-proof motor in an embodiment of the present application is as follows: When the explosion-proof motor compresses the elastic pad, the base 3 drives the fastening block 221 to move synchronously in the direction close to the placement plate 4. The fastening block 221 makes the inner wall of the guiding groove 2122 rotate in the direction close to the fastening block 221 through the fastening rod 222, and the guiding strip 2121 makes the rotating cylinder 1121 rotate through the mounting block 2111. During the rotation of the rotating cylinder 1121, the limiting pawl 122 limits the rotation direction of the rotating cylinder 1121 through the limiting gear ring 121, thereby reducing the possibility of the rotating cylinder 1121 reversing. Furthermore, the possibility of the base 3 moving upward in the vertical direction is reduced, and the possibility of vibration generated by the base 3 repeatedly moving in the vertical direction is reduced.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A vibration damping device for an explosion-proof motor. The explosion-proof motor includes a base (3) and a motor body (5) installed on the base (3). The base (3) is fixedly installed on a placement plate (4) through a bolt and nut assembly, and an elastic pad is placed between the base (3) and the placement plate (4). It is characterized in that: The shock absorption device includes; A rotating seat (1), the rotating seat (1) is located near the base (3), the rotating seat (1) includes a rotating part (11) and a limiting part (12) installed near the rotating part (11), and the limiting part (12) is used to limit the rotation direction of the rotating part (11); A fastening assembly (2), the fastening assembly (2) includes a guiding part (21) installed on the rotating part (11) and a fastening part (22) slidably hinged on the guiding part (21), and the fastening part (22) is fixedly installed on the base (3); When the explosion-proof motor compresses the elastic pad, the base (3) moves towards the direction close to the placing plate (4) through the fastening part (22), the fastening part (22) drives the rotating part (11) to rotate through the guiding part (21), and the limiting part (12) limits the rotation direction of the rotating part (11), reducing the possibility of reverse rotation of the rotating part (11).

2. The shock-absorbing device for explosion-proof motors according to claim 1, characterized in that: The rotating part (11) includes a rotating frame (111) installed on the placing plate (4) and a rotating member (112) rotatably installed on the rotating frame (111).

3. The vibration damping device for explosion-proof motor according to claim 2, characterized in that: The rotating frame (111) includes a fixing plate (1111) installed on the placing plate (4) and a fixing shaft (1112) installed on the fixing plate (1111), the length direction of the fixing shaft (1112) is consistent with the length direction of the base (3), the rotating member (112) is a rotating cylinder (1121), and the rotating cylinder (1121) is rotatably sleeved on the fixing shaft (1112).

4. The shock absorption device for an explosion-proof motor according to claim 3, characterized in that: The limiting part (12) includes a limiting gear ring (121) installed on the outer circumferential wall of the rotating cylinder (1121) and a limiting pawl (122) rotatably installed at a position of the fixing plate (1111) close to the limiting gear ring (121), and the limiting pawl (122) is inserted and matched with the tooth gap between two adjacent limiting teeth of the limiting gear ring (121).

5. The vibration damping device for an explosion-proof motor according to claim 3, wherein: The guiding part (21) includes a mounting member (211) installed on the rotating part (11) and a guiding member (212) installed on the mounting member (211), and the fastening part (22) is slidably hinged with the guiding member (212).

6. The vibration damping device for an explosion-proof motor according to claim 5, characterized in that: A positioning groove (1122) is formed on the outer circumferential wall of the rotating cylinder (1121), the mounting member (211) includes a mounting rod (2112) installed inside the positioning groove (1122) and a mounting block (2111) partially placed inside the positioning groove (1122), the length of the mounting rod (2112) is consistent with the length direction of the rotating cylinder (1121), and the mounting rod (2112) penetrates through the mounting block (2111).

7. The vibration damping device for an explosion-proof motor according to claim 5, characterized in that: The guiding member (212) is a guiding strip (2121) installed on the mounting member (211), a guiding groove (2122) is formed on the side wall of the guiding strip (2121) along the length direction of the guiding strip (2121), and the fastening part (22) is slidably hinged with the guiding groove (2122).

8. The shock absorption device for an explosion-proof motor according to claim 5, characterized in that: The fastening part (22) includes a fastening block (221) installed on the base (3) and a fastening rod (222) installed on the fastening block (221), and the fastening rod (222) is slidably hinged to the guiding member (212).

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