Oil leakage prevention generator

Abstract

The utility model discloses a generator capable of preventing oil leakage, belongs to the technical field of generators, and solves the problem that an existing generator capable of preventing oil leakage is inconvenient to disassemble and assemble. The generator comprises a generator body and a rotating shaft and further comprises two studs and two semicircular plates, two symmetrically-arranged first inserting grooves are formed in the center of the rear end of the generator body, two symmetrically-arranged second inserting grooves are formed in a positioning column, the positions of the first inserting grooves correspond to the positions of the second inserting grooves, and the first inserting grooves and the second inserting grooves are symmetrically formed in the center of the rear end of the generator body. The two studs are inserted into the two first inserting grooves and the two second inserting grooves in the radial direction in a one-to-one correspondence mode, the semicircular plate is located in a hole of the positioning column, the tops of the studs are in threaded connection with fastening nuts used for fastening the studs, and when the studs are fastened through the fastening nuts, one side of the semicircular plate is attached to one side of the oil seal. The generator provided by the utility model can limit the displacement of the oil seal to improve the sealing performance of the oil seal, is more convenient to disassemble, assemble and maintain, and greatly improves the disassembly and assembly efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, and more particularly to an oil leakage-proof generator. Background Art

[0002] A generator typically consists of a stator, rotor, end caps, and bearings. The rotor, in turn, consists of the rotor core winding, retaining ring, center ring, slip ring, fan, and shaft. To prevent oil leakage, an oil seal is typically installed on the generator shaft. However, due to the gap between the outer end of the seal and the rear bearing, the seal can easily shift during operation, resulting in a poor seal and oil leakage, seriously impacting the generator's performance.

[0003] The applicant's prior application, publication number: CN 214314850 U, discloses an oil-leakage-proof generator, belonging to the field of generators, and solving the problem of traditional generator oil seals easily shifting and causing oil leakage. The generator includes a generator body and a rotating shaft, a rear end bearing being provided between the generator body and the rotating shaft, a rear end cover being provided at the rear end of the generator body, an oil seal being provided between the rear end cover and the rotating shaft, a retaining spring being embedded in the rear end cover on one side of the oil seal, a screw ring being screwed onto the rear end cover on one side of the retaining spring, and a sealing ring being provided between the rear end face of the generator body and the rear end cover. The oil-leakage-proof generator of the utility model can prevent the oil seal from shifting, further improving the sealing performance of the oil seal.

[0004] Although the above-mentioned existing generator can prevent the oil seal from being displaced, during the actual assembly process, the screw ring and the retaining ring are very inconvenient to disassemble and assemble due to the relatively small space where the oil seal is located. In particular, the retaining ring needs to be radially squeezed to deform it before it can be removed, which brings great inconvenience to the staff and is very inconvenient to disassemble and assemble.

[0005] Therefore, a novel oil leakage-proof generator needs to be designed to solve the above-mentioned technical problems. Utility Model Content

[0006] The technical problem to be solved by the present invention is to provide an oil leakage-proof generator in view of the above-mentioned deficiencies in the prior art, which can limit the displacement of the oil seal to improve the sealing performance of the oil seal, and at the same time make disassembly and maintenance more convenient, thereby greatly improving the disassembly and assembly efficiency.

[0007] The technical solution of the utility model is as follows: an oil leakage-proof generator, comprising a generator body and a rotating shaft, a rear end bearing is provided between the generator body and the rotating shaft, a rear end cover is provided at the rear end of the generator body, an oil seal is provided between the rear end cover and the rotating shaft, a positioning column is provided at the center of the rear end cover, and the oil seal is installed in a hole opened in the positioning column, and also includes two studs and two semicircular plates, each of which is fixedly installed with a semicircular plate at the bottom of the stud. Two symmetrically arranged first slots are provided at the rear end center of the generator body, two symmetrically arranged second slots are provided on the positioning column, the position of the first slot corresponds to the position of the second slot, the two studs are radially inserted into the two first slots and the second slots in a one-to-one manner, the semicircular plates are located in the hole of the positioning column, and the top of the stud is threadedly connected with a fastening nut for fastening it. When the stud is fastened by the fastening nut, one side of the semicircular plate fits against one side of the oil seal.

[0008] As a further improvement, when the stud is fastened by the fastening nut, the diameter of the circle formed by splicing the two semicircular plates is smaller than the diameter of the rotating shaft.

[0009] Furthermore, the diameters of the first slot and the second slot are adapted to the diameter of the stud.

[0010] Furthermore, when the stud is fastened by the fastening nut, the bottom of the first slot fits against the outer wall of the stud, and the bottom of the second slot is spaced apart from the outer wall of the stud.

[0011] Furthermore, the end face of the positioning column fits with the outer ring of the rear end bearing, and a gap is formed between the inner ring of the rear end bearing and the semicircular plate.

[0012] Furthermore, a contact platform is provided on the outer wall of the generator body outside the first slot, and the first slot passes through the contact platform. When the stud is fastened by the fastening nut, the fastening nut fits into the contact platform.

[0013] Furthermore, a sealing ring is provided between the rear end surface of the generator body and the rear end cover.

[0014] Furthermore, a plurality of screw rods are provided at the rear end of the generator body, one end of each screw rod movably passes through the rear end cover and is screwed with a locking nut.

[0015] Furthermore, a slip ring is movably sleeved on the screw rod inside the rear end cover, and a spring is provided on the screw rod between the slip ring and the generator body, with both ends of the spring respectively pressing against the generator body and the slip ring.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] The generator of the present invention provides a stud and a semicircular plate between the positioning column of the rear end cover and the rear end of the generator body. During assembly, the rear end bearing is first installed between the generator body and the rotating shaft, the oil seal is installed in the positioning column, and then the stud is inserted into the first slot. The rear end cover is then installed at the rear end of the generator body so that the positioning column is inserted into the rear end center of the generator body. At this time, the second slot is inserted into the stud until the semicircular plate contacts the oil seal to achieve installation in place. Finally, the fastening nut is rotated to tighten and fix the stud on the generator body, so that the stud cannot be loosened, and the semicircular plate cannot move. During disassembly, the rear end cover is disassembled and the fastening nut is loosened. This can limit the displacement of the oil seal to improve the sealing performance of the oil seal, and at the same time, it is more convenient to disassemble and maintain, thereby greatly improving the efficiency of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle;

[0021] Figure 3 for Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 4 This is an enlarged side view of the stud and semicircular plate in the present invention;

[0023] Figure 5 This is a side structural diagram of the rear end cover of the utility model;

[0024] Figure 6 It is a side structural schematic diagram of the rear end of the generator body in the present utility model.

[0025] Among them: 1. Generator body; 2. Rotating shaft; 3. Rear end bearing; 4. Rear end cover; 5. Oil seal; 6. Positioning column; 7. Stud; 8. Semicircular plate; 9. First slot; 10. Second slot; 11. Fastening nut; 12. Contact platform; 13. Sealing ring; 14. Screw; 15. Locking nut; 16. Slip ring; 17. Spring. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0027] See Figure 1-6The utility model is an oil leakage-proof generator, comprising a generator body 1 and a rotating shaft 2, a rear end bearing 3 is provided between the generator body 1 and the rotating shaft 2, a rear end cover 4 is provided at the rear end of the generator body 1, and an oil seal 5 is provided between the rear end cover 4 and the rotating shaft 2, wherein a positioning column 6 is provided at the center of the rear end cover 4, the positioning column 6 is inserted into the generator body 1, and plays the role of positioning and installing the rear end cover 4, a hole is opened in the positioning column 6, and the oil seal 5 is installed in the hole opened in the positioning column 6, the generator further comprises two studs 7 and two semicircular plates 8, wherein a semicircular plate 8 is fixedly installed at the bottom of each stud 7, the stud 7 and the semicircular plate 8 are arranged vertically, and a hole is opened at the rear end center of the generator body 1. There are two symmetrically arranged first slots 9, which extend axially from the rear end face of the generator body 1 to the middle thereof. Two symmetrically arranged second slots 10 are provided on the positioning column 6, and the second slot 10 extends axially to one end of the positioning column 6 end face of the rear end cover 4. The position of the first slot 9 corresponds to the position of the second slot 10. The two studs 7 are radially inserted into the two first slots 9 and the second slot 10 in a one-to-one manner. The semicircular plate 8 is located in the hole of the positioning column 6. A fastening nut 11 for fastening the stud 7 is threadedly connected to the top of the stud 7. When the stud 7 is fastened by the fastening nut 11, one side of the semicircular plate 8 fits against one side of the oil seal 5, thereby limiting the axial displacement of the oil seal 5.

[0028] The generator of the present invention is characterized in that a stud 7 and a semicircular plate 8 are provided between the positioning column 6 of the rear end cover 4 and the rear end of the generator body 1. During assembly, the rear end bearing 3 is first installed between the generator body 1 and the rotating shaft 2, and the oil seal 5 is installed in the positioning column 6. Then, the stud 7 is inserted into the first slot 9, and then the rear end cover 4 is installed at the rear end of the generator body 1 so that the positioning column 6 is inserted into the rear end center of the generator body 1. At this time, the second slot 10 is inserted into the stud 7 until the semicircular plate 8 contacts the oil seal 5 to achieve installation in place. Finally, the fastening nut 11 is rotated to tighten and fix the stud 7 on the generator body 1, so that the stud 7 cannot be loosened, and the semicircular plate 8 cannot move. During disassembly, the rear end cover 4 is disassembled and the fastening nut 11 is loosened. This can limit the displacement of the oil seal to improve the sealing performance of the oil seal, and it is more convenient to disassemble and maintain, thereby greatly improving the efficiency of disassembly and assembly.

[0029] Preferably, when the stud 7 is tightened by the fastening nut 11, the diameter of the circle formed by the two semicircular plates 8 is smaller than the diameter of the shaft 2. That is, after the semicircular plates 8 are installed, the diameter of the circle formed by the two semicircular plates 8 is smaller than the diameter of the shaft 2, ensuring smooth rotation of the shaft 2. Furthermore, the diameters of the first slot 9 and the second slot 10 are adapted to the diameter of the stud 7, ensuring smooth insertion of the stud 7 while preventing the stud 7 from shaking.

[0030] Preferably, when the stud 7 is tightened by the fastening nut 11 (i.e., after the stud 7 is installed and fixed), the bottom of the first slot 9 fits against the outer wall of the stud 7, thereby positioning the stud 7 and preventing it from shaking. The bottom of the second slot 10 is spaced apart from the outer wall of the stud 7, ensuring that the semicircular plate 8 can contact the oil seal 5 to form a limit. Furthermore, the end face of the positioning column 6 fits against the outer ring of the rear end bearing 3, thereby pressing the rear end bearing 3. A gap is formed between the inner ring of the rear end bearing 3 and the semicircular plate 8 to prevent interference between the semicircular plate 8 and the rear end bearing 3.

[0031] Preferably, a contact platform 12 is further provided on the outer wall of the generator body 1 outside the first slot 9. The first slot 9 penetrates the contact platform 12 to ensure that the stud 7 can be inserted into the contact platform 12. When the stud 7 is tightened by the fastening nut 11 (i.e., after the stud 7 is installed and fixed), the fastening nut 11 fits against the contact platform 12, which can increase the contact area between the fastening nut 11 and the contact platform 12, thereby improving the stability of the connection of the fastening nut 11. Furthermore, the top surface of the contact platform 12 can be provided with anti-slip grooves to further increase the friction between the fastening nut 11 and the contact platform 12, further improve the stability of the connection of the fastening nut 11, and prevent the fastening nut 11 from loosening.

[0032] Preferably, a sealing ring 13 is provided between the rear end surface of the generator body 1 and the rear end cover 4 to further prevent oil leakage.

[0033] Preferably, a plurality of screws 14 are provided at the rear end of the generator body 1, wherein one end of the screw 14 movably passes through the rear end cover 4 and is screwed with a locking nut 15. When installing the rear end cover 4, the rear end cover 4 is sleeved on the screw 10, and then the locking nut 11 is screwed onto the screw 10, thereby pressing the rear end cover 4 onto the generator body 1 to achieve installation of the rear end cover 4. Furthermore, a slip ring 16 is movably sleeved on the screw 14 on the inner side of the rear end cover 4. The slip ring 12 can move axially relative to the screw 10. A spring 17 is provided on the screw 14 between the slip ring 16 and the generator body 1, and the two ends of the spring 17 respectively press the generator body 1 and the slip ring 16. The spring 17 pushes the slip ring 16 inversely, the slip ring 16 pushes inversely the rear end cover 4, and the rear end cover 4 then pushes inversely the locking nut 15, thereby increasing the thread friction between the locking nut 15 and the screw 14, effectively preventing the locking nut 15 from loosening.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. An oil leakage-proof generator, comprising a generator body (1) and a rotating shaft (2), wherein a rear end bearing (3) is provided between the generator body (1) and the rotating shaft (2), a rear end cover (4) is provided at the rear end of the generator body (1), an oil seal (5) is provided between the rear end cover (4) and the rotating shaft (2), a positioning column (6) is provided at the center of the rear end cover (4), and the oil seal (5) is installed in a hole provided in the positioning column (6), characterized in that: The generator body (1) further comprises two studs (7) and two semicircular plates (8), wherein a semicircular plate (8) is fixedly mounted on the bottom of each stud (7), two symmetrically arranged first slots (9) are provided at the rear end center of the generator body (1), and two symmetrically arranged second slots (10) are provided on the positioning column (6), wherein the position of the first slot (9) corresponds to the position of the second slot (10), and the two studs (7) are radially inserted into the two first slots (9) and the second slot (10) in a one-to-one correspondence, and the semicircular plate (8) is located in the hole of the positioning column (6), and the top of the stud (7) is threadedly connected with a fastening nut (11) for fastening the stud, and when the stud (7) is fastened by the fastening nut (11), one side of the semicircular plate (8) is in contact with one side of the oil seal (5).

2. The oil leakage-proof generator according to claim 1, characterized in that: When the stud (7) is fastened by the fastening nut (11), the diameter of the circle formed by splicing the two semicircular plates (8) is smaller than the diameter of the rotating shaft (2).

3. The oil leakage-proof generator according to claim 1, characterized in that: The diameters of the first slot (9) and the second slot (10) are adapted to the diameter of the stud (7).

4. The oil leakage-proof generator according to claim 1, characterized in that: When the stud (7) is fastened by the fastening nut (11), the bottom of the first slot (9) fits against the outer wall of the stud (7), and the bottom of the second slot (10) is spaced apart from the outer wall of the stud (7).

5. The oil leakage-proof generator according to claim 1, characterized in that: The end face of the positioning column (6) fits the outer ring of the rear end bearing (3), and a gap is formed between the inner ring of the rear end bearing (3) and the semicircular plate (8).

6. The oil leakage-proof generator according to claim 1, characterized in that: A contact platform (12) is further provided on the outer wall of the generator body (1) outside the first slot (9), the first slot (9) passes through the contact platform (12), and when the stud (7) is tightened by the tightening nut (11), the tightening nut (11) fits with the contact platform (12).

7. The oil leakage-proof generator according to claim 1, characterized in that: A sealing ring (13) is provided between the rear end surface of the generator body (1) and the rear end cover (4).

8. The oil leakage-proof generator according to any one of claims 1 to 7, characterized in that: The rear end of the generator body (1) is provided with a plurality of screw rods (14), one end of the screw rod (14) movably passes through the rear end cover (4) and is screwed with a locking nut (15).

9. The oil leakage-proof generator according to claim 8, characterized in that: A slip ring (16) is movably sleeved on the screw rod (14) on the inner side of the rear end cover (4), and a spring (17) is provided on the screw rod (14) between the slip ring (16) and the generator body (1), with two ends of the spring (17) respectively pressing against the generator body (1) and the slip ring (16).

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