Highly sealed double oil seal type motor protection structure

Abstract

The utility model discloses a kind of high sealing double oil seal type motor protection structure, it is related to motor related technical field.The utility model includes motor shell, mounting ring, fixed disc and shaft seal cover, the output shaft is fixed in the output end of motor shell, the outside of motor shell output end is fixed with fixed disc, the end of fixed disc away from motor shell is provided with shaft seal cover, the end of one side of shaft seal cover close to fixed disc is fixed with mounting ring, the end of one side of mounting ring close to fixed disc is fixed with snap ring, the end of snap ring away from mounting ring is fixed with flexible sealing ring, two mutually parallel annular oil reservoirs are set in the inside of shaft seal cover, extruding sleeve is set in each oil reservoir, and the both ends of each extruding sleeve are fixed with flexible ring.The utility model passes through setting motor shell, mounting ring, fixed disc and shaft seal cover, solve the problem that motor protection structure wears after work can cause oil leakage, and installing oil seal structure on motor shell is easy to produce gap and affect sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of motor-related technology, and in particular relates to a high-sealing double oil-sealed motor protection structure. Background Technology

[0002] The protective structure of an electric motor is a crucial design element for ensuring its safe and stable operation. Its primary purpose is to prevent external objects (such as dust and liquids) from entering the motor, while also preventing harm to personnel or the environment. The protection rating (IP code) is a key standard for measuring a motor's protective capabilities. It consists of two digits: the first digit indicates the level of protection against solid foreign objects, and the second digit indicates the level of water resistance. For example, IP55 represents dust and water jet protection, suitable for general industrial environments, while IP65 provides complete dust and powerful water jet protection, suitable for outdoor or harsh conditions. However, the protective structure of electric motors still has the following drawbacks in practical use:

[0003] In actual operation, the protective structure of the motor seals the output shaft and the housing by means of the injection of oil and the cooperation of structures such as sealing rings. However, during operation, after the sealing structure wears down over a certain period of time, oil leakage is likely to occur, affecting the sealing effect.

[0004] Secondly, during the installation process, the protective structure of the motor needs to be installed onto the motor housing through the mounting structure. However, if the sealing is only initially squeezed and sealed by the sealing ring during the installation process, poor sealing will occur at the gap between the protective structure and the oil seal structure, affecting the protective effect. Utility Model Content

[0005] The purpose of this utility model is to provide a high-sealing double oil-sealed motor protection structure. By setting up a motor housing, mounting ring, fixing plate and shaft seal sleeve, it solves the problems that oil leakage will occur due to wear after the motor protection structure is in operation, and that gaps are easily generated when the oil seal structure is installed on the motor housing, which affects the sealing effect.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a high-sealing double-oil-seal motor protection structure, comprising a motor housing, a mounting ring, a fixing plate, and a shaft seal sleeve. An output shaft is fixed to the output end of the motor housing, and a fixing plate is fixed to the outer side of the output end of the motor housing. A shaft seal sleeve is disposed at the end of the fixing plate away from the motor housing. A mounting ring is fixed to the circumference of the shaft seal sleeve near the fixing plate. A retaining ring is fixed to the end of the mounting ring near the fixing plate, and a flexible sealing ring is fixed to the end of the retaining ring away from the mounting ring. Two parallel annular oil chambers are formed inside the shaft seal sleeve. Each oil chamber contains a compression sleeve, and flexible rings are fixed to both ends of each compression sleeve. Each flexible ring is fixed inside the shaft seal sleeve, and the inner rings of the compression sleeves and the inner rings of the shaft seal sleeve are flush. During operation, the working structure of the motor is installed within the motor housing. The shaft seal sleeve and the fixing plate are connected together by the mounting ring. After the fixing plate and the mounting ring are installed together, the gap between the shaft seal sleeve and the fixing plate is sealed. The shaft seal sleeve also seals the gap between the output shaft and the motor housing.

[0008] Furthermore, the mounting ring has mounting ears fixed in a ring array around its periphery, and each mounting ear has a mounting bolt inserted through it along the central axis. The mounting ring is movably connected to the mounting bolts through the mounting ears.

[0009] Furthermore, the fixed disk is fixed with threaded cylinders in a ring array around its periphery, and the mounting bolts are threadedly connected inside the threaded cylinders. The fixed disk is connected to the mounting bolts through the threaded cylinders.

[0010] Furthermore, the fixed disk has a movable groove at one end near the mounting ring. The movable groove is located on the outside of the shaft seal sleeve. The retaining ring and the flexible sealing ring are both movably connected in the movable groove. The fixed disk is movably connected to the retaining ring and the flexible sealing ring through the movable groove.

[0011] Furthermore, the output shaft passes through the fixed disc and is sleeved inside the shaft seal sleeve, and the compression sleeve is squeezed and disposed on the periphery of the output shaft, so that the gap between the output shaft and the shaft seal sleeve is sealed.

[0012] Furthermore, two oil supply pipes are fixedly connected to the circumference of the shaft seal sleeve. The two oil supply pipes are respectively connected to two oil tanks. A connector is fixed at the end of each oil supply pipe away from the shaft seal sleeve. A control valve is fixed on the circumference of the oil supply pipe extending out of the shaft seal sleeve. The shaft seal sleeve delivers oil to the oil tank through the oil supply pipes to provide a squeezing effect for the extrusion sleeve.

[0013] This utility model has the following beneficial effects:

[0014] This invention solves the problem of oil leakage caused by wear of the motor protection structure after operation by setting up a motor housing and a shaft seal sleeve. After the shaft seal sleeve is installed on the output shaft of the motor housing, the connector is connected to the oil supply pipeline, and the oil is delivered to the oil tank inside the shaft seal sleeve. After delivering an appropriate amount of oil to the two oil tanks, the control valve is closed. Under the pressure of the oil, the elasticity of the flexible ring presses the compression sleeve onto the output shaft, sealing the gap between the compression sleeve and the output shaft. This prevents oil leakage caused by wear of the motor protection structure after operation, and the sealing effect is achieved through oil compression, resulting in better sealing safety.

[0015] This invention solves the problem of gaps easily appearing when installing the oil seal structure on the motor housing, affecting the sealing effect, by setting up a motor housing, mounting ring, and fixing plate. When installing the mounting ring on the fixing plate, a shaft seal sleeve is fitted on the output shaft until the mounting ring moves to contact with the fixing plate. After the mounting ring and the fixing plate are in contact, the retaining ring and the flexible sealing ring are engaged in the movable groove on the fixing plate. Then, the mounting ear is aligned with the threaded cylinder, the mounting bolt is inserted into the mounting ear, and then screwed into the threaded cylinder. After tightening, the mounting ring and the fixing plate are pressed together, sealing the mounting ring and the fixing plate, thus providing a complete seal during operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A three-dimensional view of the assembly structure of a high-sealing double-oil-seal motor protection structure;

[0018] Figure 2 A three-dimensional structural view of the motor housing;

[0019] Figure 3 A three-dimensional structural view of the mounting ring;

[0020] Figure 4 A three-dimensional structural diagram of the fixed disk;

[0021] Figure 5 This is a three-dimensional view of the shaft seal section after it has been cut open.

[0022] Figure label:

[0023] 1. Motor housing; 101. Output shaft; 2. Mounting ring; 201. Snap ring; 202. Flexible sealing ring; 203. Mounting lug; 204. Mounting bolt; 3. Fixed plate; 301. Movable groove; 302. Threaded cylinder; 4. Shaft seal sleeve; 401. Oil tank; 402. Extrusion sleeve; 403. Flexible ring; 404. Oil delivery pipe; 405. Connector; 406. Control valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0025] Please see Figures 1-4 This utility model is a high-sealing double-oil-seal motor protection structure, including a motor housing 1, a mounting ring 2, a fixing plate 3, and a shaft seal sleeve 4. An output shaft 101 is fixed to the output end of the motor housing 1, and the motor housing 1 houses the motor's drive structure. The end of the output shaft 101 located inside the motor housing 1 is fixed to the motor's drive structure, and the output shaft 101 outputs the power generated by the motor. A fixing plate 3 is fixed to the outer side of the output end of the motor housing 1, providing mounting for the mounting ring 2 and the shaft seal sleeve 4 on the motor housing 1. A shaft seal sleeve 4 is located at the end of the fixing plate 3 away from the motor housing 1, sealing the gap between the motor housing 1 and the mounting ring 2. A mounting ring 2 is fixed to the end of the shaft seal sleeve 4 near the fixing plate 3, mounting the shaft seal sleeve 4 and the fixing plate 3 together. A retaining ring 201 is fixed to one end of the mounting ring 2 near the fixed plate 3, and a flexible sealing ring 202 is fixed to the other end of the retaining ring 201 away from the mounting ring 2. The retaining ring 201 and the flexible sealing ring 202 cooperate to seal the gap between the mounting ring 2 and the fixed plate 3. Two parallel annular oil tanks 401 are opened inside the shaft seal sleeve 4. The oil tanks 401 contain sealing oil. Each oil tank 401 is provided with a compression sleeve 402. The compression sleeve 402 is made of self-lubricating material. Flexible rings 403 are fixed to both ends of each compression sleeve 402. Each flexible ring 403 is fixed inside the shaft seal sleeve 4, and the inner ring of the compression sleeve 402 is flush with the inner ring of the shaft seal sleeve 4. After the oil enters the oil tank 401 inside the shaft seal sleeve 4, it squeezes the compression sleeve 402, thus squeezing and sealing the compression sleeve 402 and the output shaft 101.

[0026] Specifically, mounting ears 203 are fixed in a ring array around the periphery of the mounting ring 2. Each mounting ear 203 is inserted with a mounting bolt 204 through it along the central axis. The mounting ring 2 is movably connected to the mounting bolt 204 through the mounting ears 203.

[0027] Furthermore, threaded cylinders 302 are fixed in a ring array around the periphery of the fixed disk 3. The mounting bolts 204 are threadedly connected to the threaded cylinders 302. The fixed disk 3 is threadedly connected to the mounting bolts 204 through the threaded cylinders 302. After the mounting bolts 204 pass through the mounting ears 203, they are screwed into the threaded cylinders 302 and tightened, so that the mounting ring 2 and the fixed disk 3 are installed together and secured.

[0028] Furthermore, a movable groove 301 is provided at one end of the fixed plate 3 near the mounting ring 2. The movable groove 301 is located on the outside of the shaft seal sleeve 4. The retaining ring 201 and the flexible sealing ring 202 are both movably connected in the movable groove 301. The fixed plate 3 is movably connected to the retaining ring 201 and the flexible sealing ring 202 through the movable groove 301, so that the gap between the fixed plate 3 and the mounting ring 2 is sealed.

[0029] The operation process of this embodiment is as follows: During operation, when installing the mounting ring 2 on the fixed disk 3, the shaft seal sleeve 4 is put on the output shaft 101 until the mounting ring 2 moves to contact the fixed disk 3. After the mounting ring 2 and the fixed disk 3 are in contact, the retaining ring 201 and the flexible sealing ring 202 are engaged in the movable groove 301 on the fixed disk 3. Then, the mounting ear 203 is aligned with the threaded cylinder 302, the mounting bolt 204 is inserted into the mounting ear 203, and then screwed into the threaded cylinder 302. After tightening, the mounting ring 2 and the fixed disk 3 are pressed together, sealing the mounting ring 2 and the fixed disk 3. Specific Implementation Example 2

[0030] Please see Figure 1 , 2 5. Based on the first specific embodiment, the output shaft 101 passes through the fixed disk 3 and is sleeved inside the shaft seal sleeve 4. The compression sleeve 402 is squeezed and disposed on the periphery of the output shaft 101, so that the gap between the output shaft 101 and the shaft seal sleeve 4 is sealed during operation.

[0031] Specifically, two oil supply pipes 404 are fixedly connected to the circumference of the shaft seal sleeve 4. The two oil supply pipes 404 are respectively connected to two oil tanks 401. Each oil supply pipe 404 has a connector 405 fixed at the end away from the shaft seal sleeve 4. A control valve 406 is fixed on the circumference of the oil supply pipe 404 extending out of the shaft seal sleeve 4. When the shaft seal sleeve 4 is working, the connector 405 is connected to the oil supply equipment. The oil is delivered into the oil supply pipe 404 and into the movable groove 301 inside the shaft seal sleeve 4. The delivery of the oil supply pipe 404 is controlled by the connector 405.

[0032] The operation process of this embodiment is as follows: During operation, after the shaft seal sleeve 4 is installed on the output shaft 101 of the motor housing 1, the connector 405 is connected to the pipeline for conveying oil, and the oil is conveyed to the oil supply pipe 404. The oil is then conveyed to the oil tank 401 inside the shaft seal sleeve 4. After a suitable amount of oil is conveyed to the two oil tanks 401, the control valve 406 is closed. Under the pressure of the oil, the elasticity of the flexible ring 403 presses the compression sleeve 402 onto the output shaft 101, thereby sealing the gap between the compression sleeve 402 and the output shaft 101.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-sealing double-oil-seal motor protection structure, comprising a motor housing (1), a mounting ring (2), a fixing disc (3), and a shaft seal sleeve (4), characterized in that: An output shaft (101) is fixed at the output end of the motor housing (1). A fixed disk (3) is fixed on the outer side of the output end of the motor housing (1). A shaft seal sleeve (4) is provided at the end of the fixed disk (3) away from the motor housing (1). An installation ring (2) is fixed at the end of the shaft seal sleeve (4) near the fixed disk (3). A retaining ring (201) is fixed at the end of the installation ring (201) near the fixed disk (3). A flexible sealing ring (202) is fixed at the end of the retaining ring (201) away from the installation ring (2). Two parallel annular oil tanks (401) are opened inside the shaft seal sleeve (4). A compression sleeve (402) is provided in each oil tank (401). A flexible ring (403) is fixed at both ends of each compression sleeve (402). Each flexible ring (403) is fixed inside the shaft seal sleeve (4). The inner ring of the compression sleeve (402) is flush with the inner ring of the shaft seal sleeve (4).

2. The high-sealing double-oil-seal motor protection structure according to claim 1, characterized in that: The mounting ring (2) has mounting ears (203) fixed in a ring array around its periphery, and each mounting ear (203) has a mounting bolt (204) inserted through it along the central axis.

3. The high-sealing double-oil-seal motor protection structure according to claim 2, characterized in that: The fixed disk (3) has a threaded cylinder (302) fixed in a ring array around its periphery, and the mounting bolt (204) is threadedly connected inside the threaded cylinder (302).

4. The high-sealing double-oil-seal motor protection structure according to claim 1, characterized in that: The fixed plate (3) has a movable groove (301) at one end near the mounting ring (2). The movable groove (301) is located on the outside of the shaft seal sleeve (4). The retaining ring (201) and the flexible sealing ring (202) are both movably connected in the movable groove (301).

5. The high-sealing double-oil-seal motor protection structure according to claim 1, characterized in that: The output shaft (101) passes through the fixed disk (3) and is sleeved inside the shaft sleeve (4), and the extrusion sleeve (402) is extruded and disposed on the periphery of the output shaft (101).

6. The high-sealing double-oil-seal motor protection structure according to claim 1, characterized in that: Two oil pipes (404) are fixedly connected to the circumference of the shaft seal sleeve (4). The two oil pipes (404) are respectively connected to two oil tanks (401). A connector (405) is fixed at the end of each oil pipe (404) away from the shaft seal sleeve (4). A control valve (406) is fixed on the circumference of the oil pipe (404) extending out of the shaft seal sleeve (4).

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