Motor end cover sealing mechanism

Abstract

The utility model relates to the technical field of generators, in particular to a motor end cover sealing mechanism, which comprises an external end cover, a motor casing and a fixing structure, an opening end of the external end cover is matched with threads on the inner wall of the motor casing, the fixing structure is arranged in the external end cover, and when the motor end cover is sealed, the fixing structure is in contact fixation with the inner wall of the motor casing. A fixing ring plate is arranged on the inner wall of the motor shell, a fixing head is arranged in the fixing structure, when the motor end cover is sealed, the fixing ring plate is in contact fit with the fixing head, and the fixing structure is fixedly connected with the motor shell, so that the external end cover is fixedly connected with the motor shell. According to the utility model, the technical problems in the prior art that the motor end cover is quickly dismounted and sealed by personnel and whether the sealing is good or not is detected in the dismounting process are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a sealing mechanism for a motor end cover. Background Art

[0002] A motor is a device that uses the principle of electromagnetic induction to convert electrical energy into mechanical energy or mechanical energy into electrical energy. The motor end cover is a cover installed on the motor housing, usually located at both ends of the motor. The main function of the end cover is to protect the internal components of the motor, such as the stator, rotor, bearings, etc. In order to prevent dust, water droplets, debris, etc. from entering the motor, a sealing structure is provided on the end cover. The existing motor sealing mechanism cannot be quickly sealed and disassembled, and it is difficult to observe the sealing of the motor end cover during disassembly and assembly.

[0003] The Chinese utility model patent with the name of "A sealing structure for the end cover of a generator" and the publication number of CN220754488U, which has been published, includes a generator body and an end cover body. The end cover body is arranged at one end of the generator body, and a mounting block is fixedly connected to the end of the generator body close to the end cover body. Structural grooves are provided on the surfaces of both sides of the mounting block, and a card block is slidably connected inside the groove. A telescopic rod structure is provided between the card block and the bottom end of the structure groove, and a spring structure is provided on the surface. Card holes are provided on the surfaces of both sides of the end cover body at positions corresponding to the card blocks, which penetrate the end cover body. Through the mutual cooperation of the card blocks, card holes and other structures, when the generator end cover needs to be removed for maintenance, the dust plug is pulled out, and the card block is pushed back into the structure groove, and the end cover body can be directly pulled out from one end of the generator body, so that maintenance and repair can be carried out conveniently and quickly. However, the device faces multiple card blocks, and each card block needs to be pushed into the structure groove before the end cover body can be pulled out. It is not easy in actual operation and is relatively time-consuming. Utility Model Content

[0004] The purpose of the present application is to provide a motor end cover sealing mechanism, which solves the technical problem of personnel quickly disassembling and sealing the motor end cover and detecting whether the seal is good during the disassembly and assembly process.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] The utility model provides a motor end cover sealing mechanism comprising an external end cover, a motor housing and a fixing structure.

[0007] Preferably, the opening end of the external end cover matches the inner wall thread of the motor housing, and a fixing structure is provided inside the external end cover; when the motor end cover is sealed, the fixing structure is in contact with and fixed to the inner wall of the motor housing.

[0008] Preferably, the fixed structure includes a cavity plate, a sliding ring, a rotating rod, and a fixed head. When the external end cover is in contact and sealed with the motor housing, the sliding ring is in contact with the circular cross-section end of the motor housing. The sliding ring slides in the cavity of the cavity plate under the pressure of the circular cross-section of the motor housing. The rotating rod is swung by the lever principle of the connecting rod structure. A fixed head is provided at one end of the rotating rod close to the motor housing, and the fixed head approaches the inner wall of the motor housing.

[0009] Preferably, the inner wall of the motor housing is provided with a fixing ring plate, and when the motor end cover is sealed, the fixing ring plate contacts and fits with the fixing head, and the fixing structure is fixedly connected to the motor housing, so that the external end cover is fixedly connected to the motor housing.

[0010] Preferably, a circular platform is fixedly provided at the contact end of the external end cover and the circular cross-section of the motor housing, a fixing groove is provided on the contact surface between the circular platform and the motor housing, a sealing gasket is slidably installed in the fixing groove of the circular platform, there is friction resistance between the sealing gasket and the fixing groove surface of the circular platform, the sealing gasket is in contact with the circular cross-section of the motor housing, and the sealing gasket is sealingly fitted with the circular cross-section of the motor housing and the fixing groove surface of the circular platform.

[0011] Preferably, a bearing sleeve is fixedly provided on the inner end face of the axis of the external end cover, a fixing groove is provided on the circular cross section of the bearing sleeve, a sealing ring is slidably installed in the fixing groove of the bearing sleeve, and there is friction resistance between the sealing ring and the fixing groove surface of the bearing sleeve.

[0012] Preferably, the fixed structure includes a cavity plate, which is arranged on the outer wall of the external end cover, and a cavity is arranged inside the cavity plate, a sliding ring is slidably installed in the cavity of the cavity plate, and an annular groove that slidably matches the sliding ring is arranged in the annular platform, and the annular groove passes through the annular platform, and the maximum diameter of the annular groove of the annular platform is smaller than the minimum diameter of the sealing gasket, and when the motor end cover is sealed, the sliding ring contacts the cross-section of the motor casing.

[0013] Preferably, a limiting protrusion is provided at one end of the sliding ring located in the cavity of the cavity plate to prevent the sliding ring from sliding out of the cavity of the cavity plate, and one end of the sliding ring located in the cavity of the cavity plate is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to the inside of the cavity of the cavity plate; when the motor end cover is removed, the sliding ring rebounds and resets itself due to the elastic force.

[0014] Preferably, at least two notch grooves are provided on the sliding ring, and the first end of the connecting rod is rotatably connected in the notch groove of the sliding ring. At the notch groove of the sliding ring, an avoidance groove is provided at a corresponding position of the circular wall of the external end cover, and the connecting rod is located in the avoidance groove of the external end cover. The second end of the connecting rod is rotatably connected to an end of the rotating rod close to the external end cover, and the middle part of the rotating rod is rotatably installed on a support block for lever movement, and the support block is fixedly set on the inner wall of the external end cover.

[0015] Preferably, a slide cylinder is provided at one end of the external end cover that matches the motor casing, a thread is provided on the outer wall of the slide cylinder, and a rotating thread is provided on the inner wall of one end of the motor casing that matches the external end cover; when the motor end cover is sealed, the number of circles of rotation of the external end cover through the thread does not exceed one circle, the end face of the slide cylinder contacts the fixed ring plate, and the rotating thread is located at the end where the slide cylinder contacts the fixed ring plate.

[0016] Preferably, the outer wall of the external end cover and the motor housing is provided with a plurality of cooling fins.

[0017] Preferably, a first ear plate is fixedly mounted on the outer wall of the contact end between the motor housing and the external end cover, and a second ear plate is fixedly mounted on the outer wall of the contact end between the external end cover and the motor housing. When the motor end cover is sealed, the first ear plate and the second ear plate are in contact and fit, and the threaded mounting holes arranged on the first ear plate and the second ear plate correspond to each other.

[0018] The technical solution of the present application has at least the following advantages and beneficial effects:

[0019] When disassembling and assembling the motor end cover seal, the personnel directly put the external end cover into the motor housing until the slide tube thread contacts and rotates with the rotating thread of the motor housing, then rotate the external end cover until the threaded mounting holes of the two ear plates correspond, and then lock it with screws to achieve the seal installation. The operation is simple and fast. When the external end cover needs to be removed, loosen the mounting screws, rotate the external end cover in the opposite direction, and then remove it directly. When installing, the threaded mounting holes of the two ear plates cannot correspond, indicating that the internal sealing gasket or sealing ring is severely worn, the thickness has changed, and the sealing cannot be achieved, and it needs to be replaced in time. In addition, the single threaded mounting hole of the ear plate is also convenient for personnel to quickly disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the device from another angle.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the device.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the device from another angle.

[0024] Figure 5 for Figure 4 Schematic diagram of the enlarged structure of A.

[0025] In the figure: 1-external end cover; 2-motor housing; 4-sealing gasket; 5-sealing ring; 6-heat sink; 101-annular platform; 102-bearing sleeve; 103-sliding cylinder; 201-fixed ring plate; 202-rotating thread; 301-cavity plate; 302-sliding ring; 303-spring; 304-connecting rod; 305-rotating rod; 306-fixed head; 307-support block; 701-first ear plate; 702-second ear plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Example

[0029] Please refer to Figure 1-Figure 5 The utility model provides a motor end cover sealing mechanism, comprising an external end cover 1, a motor housing 2, and a fixing structure.

[0030] Furthermore, one end of the external end cover 1 that is sealed and fitted with the motor housing 2 is an open end, the open end of the external end cover 1 matches the inner wall thread of the motor housing 2, and a fixed structure is arranged inside the external end cover 1; when the motor end cover is sealed, the external end cover 1 and the motor housing 2 are brought close to each other so that the fixed structure on the external end cover 1 begins to contact the circular cross-section of the motor housing 2, and then the external end cover 1 is manually twisted, and the threads of the external end cover 1 are rotated to fit close to the motor housing 2. At this time, the distance between the fixed structure and the circular cross-section of the motor housing 2 is reduced, and the fixed structure is subjected to the thrust when the motor housing 2 approaches, and is contacted and fixed with the inner wall of the motor housing 2 through the lever action, so that the external end cover 1 and the motor housing 2 are quickly fixed together.

[0031] In detail, the fixed structure includes a cavity plate 301, a sliding ring 302, a connecting rod structure, a rotating rod 305, and a fixed head 306; a fixed ring plate 201 is provided on the inner wall of the motor housing 2.

[0032] The cavity plate 301 is arranged on the outer wall of the external end cover 1, and a cavity is arranged inside the cavity plate 301. A sliding ring 302 is slidably installed in the cavity of the cavity plate 301. When the motor end cover is sealed, the fixed structure contacts the motor housing 2, and one end of the sliding ring 302 located outside the cavity of the cavity plate 301 contacts the circular cross-section of the motor housing 2. The sliding ring 302 slides in the cavity of the cavity plate 301 under the compression of the motor housing 2. The sliding ring 302 is connected to the rotating rod 305 through a connecting rod structure. When the sliding ring 302 slides, the rotating rod 305 is driven to swing by the lever principle of the connecting rod structure. A fixed head 306 is fixedly installed at one end of the rotating rod 305 close to the motor housing 2, and the fixed head 306 swings with the rotating rod 305 to the fixed ring plate 201 on the inner wall of the motor housing 2, and the fixed head 306 buckles one end of the fixed ring plate 201 to realize the fixed connection between the fixed structure and the motor housing 2, thereby realizing the rapid fixation of the external end cover 1 and the motor housing 2.

[0033] Furthermore, the connecting rod structure includes a spring 303, a connecting rod 304, and a support block 307.

[0034] In detail, one end of the sliding ring 302 located in the cavity of the cavity plate 301 is fixedly connected to one end of the spring 303, and the other end of the spring 303 is fixedly connected to the inside of the cavity of the cavity plate 301. The spring 303 applies elastic force to the sliding ring 302 to ensure that when the motor end cover is removed, the sliding ring 302 slides back to its original position through the elastic force. At least two notches are provided on the sliding ring 302, and the notches are evenly arranged on the sliding ring 302. The first end of the connecting rod 304 is rotatably connected to the notch of the sliding ring 302, and the notch of the sliding ring 302 At the corresponding position of the circular wall of the external end cover 1, an avoidance groove is arranged, and the end of the avoidance groove is rounded to increase the activity space of the connecting rod 304. The connecting rod 304 is located in the avoidance groove of the external end cover 1. When it slides and swings following the sliding ring 302, it will not contact the avoidance groove end of the external end cover 1. The second end of the connecting rod 304 is rotatably connected to one end of the rotating rod 305 close to the external end cover 1. The middle part of the rotating rod 305 is rotatably installed on the support block 307 for lever movement. The support block 307 is fixedly set on the inner wall of the external end cover 1.

[0035] When the motor end cover is sealed, the sliding ring 302 slides toward the cavity of the cavity plate 301, driving the first end of the connecting rod 304 in the cutout groove of the sliding ring 302 to move. The movement of the connecting rod 304 drives the second end of the rotating rod 305 to swing on the support block 307, performing a lever movement.

[0036] In some embodiments, a motor end cover sealing mechanism also includes a sealing gasket 4 and a sealing ring 5; a circular platform 101 is fixedly provided at the contact end between the external end cover 1 and the circular cross section of the motor housing 2, and a bearing sleeve 102 is fixedly provided on the inner end face of the axis of the external end cover 1.

[0037] The contact surface between the circular platform 101 and the motor housing 2 is provided with a fixing groove, and a sealing gasket 4 is slidably installed in the fixing groove of the circular platform 101. There is friction resistance between the sealing gasket 4 and the fixing groove surface of the circular platform 101, which seals and fits with the fixing groove surface of the circular platform 101 while preventing it from falling off at will; a circular groove that slides and matches with the sliding ring 302 is provided in the circular platform 101, and the circular groove passes through the circular platform 101. The maximum diameter of the circular groove of the circular platform 101 is smaller than the minimum diameter of the sealing gasket 4, ensuring that the entire fixed structure is located within the sealing range of the sealing gasket 4; when the motor end cover is sealed, the sealing gasket 4 contacts the circular cross-section of the motor housing 2, and the sealing gasket 4 will be squeezed by the circular cross-section of the motor housing 2, and its own thickness will shrink slightly and seal and fit with the circular cross-section of the motor housing 2.

[0038] The circular cross-section of the bearing sleeve 102 is provided with a fixing groove, and a sealing ring 5 is slidably installed in the fixing groove of the bearing sleeve 102. There is friction resistance between the sealing ring 5 and the fixing groove surface of the bearing sleeve 102 to prevent loosening and ensure a sealed fit; the interior of the motor generally includes a drive shaft and a bearing connected to the drive shaft, and the axis center of the external end cover 1 is provided with a through hole to facilitate the extension of the drive shaft in the motor. The interior of the bearing sleeve 102 is hollow and is used to install the bearing inside the motor. The sealing ring 5 in the fixing groove of the bearing sleeve 102 contacts the outer cylindrical end surface of the bearing and is used to seal the drive shaft deep in the through hole of the external end cover 1.

[0039] In some embodiments, a slide 103 is extended from the open end of the external end cover 1 that matches the motor housing 2, and the outer wall of the slide 103 is provided with a thread. A rotating thread 202 is provided on the inner wall of one end of the motor housing 2 that matches the external end cover 1. The rotating thread 202 matches the thread of the outer wall of the slide 103, and the number of threads of the two does not exceed one circle; when the motor end cover is sealed, the slide 103 extends into the inner wall of the motor housing 2, and when the end face of the slide 103 is about to approach the fixed ring plate 201, the outer wall thread of the slide 103 and the rotating thread 202 start to rotate in thread matching, and when the number of rotations does not exceed one circle, the end face of the slide 103 contacts the end face of the fixed ring plate 201, and the elastic resistance generated by the fixed structure when the motor end cover is sealed and the reaction force of the deformation when the sealing gasket 4 and the sealing ring 5 are sealed and fitted are reduced by thread matching, so as to facilitate the rapid completion of the fixed sealing of the motor end cover.

[0040] In some embodiments, a motor end cover sealing mechanism also includes a heat sink 6. A plurality of heat sinks 6 are provided on the outer wall of the external end cover 1 and the motor housing 2. The heat sink 6 is in the shape of a flat blade. The motor will generate heat when working. The heat sink 6 increases the heat dissipation area of ​​the external end cover to facilitate heat dissipation. The flat blade shape makes it convenient for personnel to pick up and rotate the motor end cover.

[0041] In some embodiments, a motor end cover sealing mechanism also includes a first ear plate 701 and a second ear plate 702. The first ear plate 701 is fixedly installed on the outer wall of the contact end where the motor housing 2 matches the external end cover 1, and the second ear plate 702 is fixedly installed on the outer wall of the contact end where the external end cover 1 matches the motor housing 2. When the motor end cover is sealed, the motor end cover is rotated through a thread. At this time, the first ear plate 701 and the second ear plate 702 are in contact and fit, and their positions are relatively rotated until the threaded mounting holes set on the first ear plate 701 and the second ear plate 702 correspond to each other. The sealing of the motor end cover is ensured by matching the rotation positions of the first ear plate 701 and the second ear plate 702. If the motor end cover is subsequently disassembled and assembled, and it is found that the positions of the first ear plate 701 and the second ear plate 702 do not correspond, it means that the sealing effect cannot be achieved, and the sealing gasket 4 or the sealing ring 5 needs to be replaced.

[0042] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A motor end cover sealing mechanism, characterized in that: It comprises an external end cover (1), a motor housing (2), and a fixing structure; The open end of the external end cover (1) is threadably matched with the inner wall of the motor housing (2), and a fixing structure is provided inside the external end cover (1); when the motor end cover is sealed, the fixing structure is in contact with and fixed to the inner wall of the motor housing (2); The fixing structure comprises a cavity plate (301), a sliding ring (302), a rotating rod (305), and a fixing head (306); when the external end cover (1) is in contact and sealed with the motor housing (2), the sliding ring (302) is in contact with the circular cross-section end of the motor housing (2); the sliding ring (302) slides in the cavity of the cavity plate (301) under the pressure of the circular cross-section of the motor housing (2); the sliding ring (302) is connected to a connecting rod structure; a rotating rod (305) is provided on the connecting rod structure; when the sliding ring (302) slides, a lever is formed by the connecting rod structure to drive the rotating rod (305) to swing; a fixing head (306) is provided at one end of the rotating rod (305) close to the motor housing (2); the fixing head (306) is close to the inner wall of the motor housing (2); The inner wall of the motor housing (2) is provided with a fixing ring plate (201); when the motor end cover is sealed, the fixing ring plate (201) is in contact with and fits with the fixing head (306); the fixing structure is fixedly connected to the motor housing (2), so that the external end cover (1) is fixedly connected to the motor housing (2).

2. A motor end cover sealing mechanism according to claim 1, characterized in that: A circular platform (101) is fixedly provided at the contact end of the external end cover (1) and the circular cross section of the motor housing (2); a fixing groove is provided at the contact surface of the circular platform (101) and the motor housing (2); a sealing gasket (4) is slidably installed in the fixing groove of the circular platform (101); there is friction resistance between the sealing gasket (4) and the fixing groove surface of the circular platform (101); the sealing gasket (4) is in contact with the circular cross section of the motor housing (2); and the sealing gasket (4) is sealed and fitted with the circular cross section of the motor housing (2) and the fixing groove surface of the circular platform (101).

3. A motor end cover sealing mechanism according to claim 1, characterized in that: A bearing sleeve (102) is fixedly arranged on the inner end surface of the axis of the external end cover (1), and a fixing groove is arranged on the circular cross section of the bearing sleeve (102). A sealing ring (5) is slidably installed in the fixing groove of the bearing sleeve (102), and there is friction resistance between the sealing ring (5) and the fixing groove surface of the bearing sleeve (102).

4. A motor end cover sealing mechanism according to claim 1, characterized in that: The fixing structure comprises a cavity plate (301), wherein the cavity plate (301) is arranged on the outer wall of the external end cover (1), wherein a cavity is arranged inside the cavity plate (301), wherein a sliding ring (302) is slidably installed in the cavity of the cavity plate (301), wherein the sliding ring (302) is slidably matched with a circular groove in the circular platform (101), wherein the circular groove passes through the circular platform (101), wherein the maximum diameter of the circular groove of the circular platform (101) is smaller than the minimum diameter of the sealing gasket (4), and when the motor end cover is sealed, the sliding ring (302) contacts the cross section of the motor housing (2).

5. A motor end cover sealing mechanism according to claim 4, characterized in that: A limiting protrusion is provided at one end of the sliding ring (302) located in the cavity of the cavity plate (301) to prevent the sliding ring (302) from sliding out of the cavity of the cavity plate (301); one end of the sliding ring (302) located in the cavity of the cavity plate (301) is fixedly connected to one end of a spring (303); and the other end of the spring (303) is fixedly connected to the inside of the cavity of the cavity plate (301); when the motor end cover is removed, the sliding ring (302) rebounds and resets due to elastic force.

6. A motor end cover sealing mechanism according to claim 1, characterized in that: At least two notches are provided on the sliding ring (302), and the first end of the connecting rod (304) is rotatably connected in the notch of the sliding ring (302). At the notch of the sliding ring (302), a corresponding position of the circular wall of the external end cover (1) is provided with an avoidance notch. The connecting rod (304) is located in the avoidance notch of the external end cover (1). The second end of the connecting rod (304) is rotatably connected to an end of the rotating rod (305) close to the external end cover (1). The middle part of the rotating rod (305) is rotatably mounted on a support block (307) for lever movement. The support block (307) is fixedly arranged on the inner wall of the external end cover (1).

7. A motor end cover sealing mechanism according to claim 1, characterized in that: A slide cylinder (103) is provided at one end of the external end cover (1) that matches the motor housing (2), and a thread is provided on the outer wall of the slide cylinder (103). A rotating thread (202) is provided on the inner wall of one end of the motor housing (2) that matches the external end cover (1). When the motor end cover is sealed, the number of turns of the external end cover (1) through the thread does not exceed one turn, the end surface of the slide cylinder (103) contacts the fixed ring plate (201), and the rotating thread (202) is located at the end of the slide cylinder (103) that contacts the fixed ring plate (201).

8. A motor end cover sealing mechanism according to claim 1, characterized in that: The outer wall of the external end cover (1) and the motor housing (2) is provided with a plurality of cooling fins (6).

9. A motor end cover sealing mechanism according to claim 1, characterized in that: A first ear plate (701) is fixedly mounted on the outer wall of the contact end between the motor housing (2) and the external end cover (1), and a second ear plate (702) is fixedly mounted on the outer wall of the contact end between the external end cover (1) and the motor housing (2); when the motor end cover is sealed, the first ear plate (701) and the second ear plate (702) are in contact and fit, and the threaded mounting holes provided on the first ear plate (701) and the second ear plate (702) correspond to each other.

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