Generator main shaft with wear-resistant anti-fatigue structure

Abstract

The utility model relates to the field of generator main shafts, in particular to a generator main shaft with a wear-resistant anti-fatigue structure, which comprises a generator main shaft body, a main body used for forming the generator main shaft, a wear-resistant protective layer and an outer lubricating channel arranged outside the generator main shaft body, and an inner self-grinding shaft ring is arranged in the generator main shaft body. The generator main shaft is provided with the wear-resistant protective layer, the outer lubricating channel, the inner self-grinding shaft washer, the inner self-grinding mandrel, the shaft end self-grinding ring, the outer lubricating shaft sleeve and the inner lubricating shaft sleeve, and when the generator main shaft is used, the wear-resistant protective layer is firstly attached to the outer portion of the generator main shaft body, so that the wear resistance of the generator main shaft body can be enhanced, and the service life of the generator main shaft body is prolonged. And then the internal self-grinding mandrel is sleeved in the generator main shaft body, and the two ends of the internal self-grinding mandrel are also provided with the internal self-grinding shaft ring and the shaft end self-grinding ring, so that the overall rigidity of the main shaft is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of generator main shaft, concretely relates to a generator main shaft with wear -resisting anti -fatigue structure. BACKGROUND

[0002] The generator main shaft is the shaft that accepts power from the engine or motor and transmits it to other machine parts, also can be called "light axis" or "main light axis", the main shaft is the key component of connecting the wheel hub and the generator, and it increases the low speed input by the wind wheel to the speed required by the generator through the speed increasing gear box to satisfy the need of the generator work characteristic, this function is particularly important in the wind driven generator set because the speed of the wind wheel is usually low, and the generator needs higher speed to generate electric energy.

[0003] The existing generator main shaft is used in the process, because the use frequency of the generator main shaft is high, if the generator main shaft lacks wear -resisting anti -fatigue structure, the surface of the main shaft will be more susceptible to the influence of friction and wear, leading to the gradually reducing of the main shaft size, the increase of the fit clearance, and further influence its running accuracy and stability, and the stress of the generator main shaft is big, the generator main shaft lacking wear -resisting anti -fatigue structure will be more susceptible to the influence of alternating stress and produce fatigue crack, this will significantly shorten the fatigue life of the main shaft, increase the frequency of replacement and maintenance.

[0004] Therefore, it is necessary to invent a generator main shaft with wear -resisting anti -fatigue structure to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The utility model discloses a purpose is provided with wear -resisting anti -fatigue structure's generator main shaft, through wear -resistant protective layer, outer lubricating channel, inner self -grinding axle ring, inner self -grinding mandrel, axle end self -grinding ring, outer lubricating sleeve and inner lubricating sleeve realize let the generator main shaft have wear -resisting anti -fatigue structure, first strengthen the anti -fatigue ability of main shaft, make the main shaft can be more stable when bearing high load operation, reduce the damage due to fatigue, then outer lubricating sleeve simplifies the lubrication process, reduces maintenance cost, still ensures that the main shaft is always fully lubricated in the operation process, improves the operation efficiency, such comprehensive wear -resisting, anti -fatigue, lubrication etc. of cooperation use under the problem, make the overall performance of generator main shaft has been improved significantly, this wear -resisting anti -fatigue structure not only improves the service life and operation efficiency of main shaft, also reduces the influence of friction and abrasion, the alternating stress effect that the generator main shaft bears is dispersed, to solve the generator main shaft in the prior art in the use process, due to the high frequency of use of generator main shaft, if the generator main shaft lacks wear -resisting anti -fatigue structure, the main shaft surface will be more susceptible to the influence of friction and abrasion, leading to the main shaft size gradually reduces, and the fitting clearance increases, and further influence its operation accuracy and stability, and the stress that the generator main shaft receives is big, and the generator main shaft lacking wear -resisting anti -fatigue structure will be more susceptible to the influence of alternating stress and produce fatigue crack, this will significantly shorten the fatigue life of main shaft, increase the frequency of replacement and maintenance problem.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a generator main shaft with wear -resisting anti -fatigue structure, including generator main shaft body, for constituting the main body of generator main shaft,

[0007] Wear -resistant protective layer covers the surface of the generator main shaft body, and is used for enhancing wear -resisting ability, and the outside of the generator main shaft body is provided with an outer lubricating channel, the inside of the generator main shaft body is provided with an inner self -grinding axle ring, the inside of the inner self -grinding axle ring is provided with a fixed clamping groove, the fixed clamping groove is inlaid with a fixed clamping block, and the outer fixed mounting of the fixed clamping block has an inner self -grinding mandrel.

[0008] The axle end self -grinding ring is arranged at the other end of the inner self -grinding mandrel, and is used for dispersing stress, and the inside of the generator main shaft body is provided with an annular inner lubricating channel, and the outside of the generator main shaft body is provided with an inner lubricating hole.

[0009] The outer lubricating sleeve is sleeved on the outside of the generator main shaft body, is used for lubricating the surface of the generator main shaft, and the outside of the outer lubricating sleeve is provided with an oil inlet, the inside of the outer lubricating sleeve is inlaid with an inner lubricating sleeve, the inside of the inner lubricating sleeve is provided with a resonance hole, and the inside of the resonance hole is provided with a lubricating steel ball.

[0010] Preferably, the wear -resistant protective layer is closely attached between the generator main shaft body, and the material of the wear -resistant protective layer is: aluminum oxide.

[0011] Preferably, the rear end of the generator main shaft body is fixedly provided with a machine shaft seat, and an installation hole is formed in the outer portion of the machine shaft seat.

[0012] Preferably, the inner self-grinding shaft ring is provided with a fixed clamping groove, and the outer portion of the inner self-grinding core shaft is fixedly provided with a fixed clamping block which is clamped and connected with the fixed clamping groove.

[0013] Preferably, the outer portion of the outer lubricating shaft sleeve is penetrated by a fastening bolt, and the front end of the fastening bolt is threadedly connected with a shaft sleeve sealing ring.

[0014] Preferably, the number of the lubricating steel balls is multiple, and the multiple lubricating steel balls are arranged in an annular array on the inner lubricating shaft sleeve.

[0015] In the above technical solution, the technical effects and advantages of the generator main shaft provided by the utility model are as follows:

[0016] The utility model discloses a wear-resistant protective layer, an outer lubricating channel, an inner self-grinding shaft ring, an inner self-grinding core shaft, an axle end self-grinding ring, an outer lubricating shaft sleeve and an inner lubricating shaft sleeve are arranged, when the generator main shaft is used, the outer portion of the generator main shaft body is first attached with the wear-resistant protective layer, so that the wear resistance of the generator main shaft body can be enhanced, then the inner portion of the generator main shaft body is sleeved with the inner self-grinding core shaft, and the inner self-grinding core shaft is further provided with the inner self-grinding shaft ring and the axle end self-grinding ring, so that the overall rigidity of the main shaft is enhanced, and the inner self-grinding shaft ring and the axle end self-grinding ring play the role of dispersing internal stress, then the outer lubricating shaft sleeve can be injected with lubricating oil, when the outer lubricating shaft sleeve rotates along with the generator main shaft, the lubricating oil can be penetrated layer by layer through the shaking of the inner lubricating shaft sleeve and the lubricating steel balls, part of the lubricating oil enters the outer lubricating channel to lubricate the outer portion of the generator main shaft body, and part of the lubricating oil enters the annular inner lubricating channel to lubricate the inner portion of the generator main shaft body, the design makes the generator main shaft have a wear-resistant and fatigue-resistant structure, the fatigue resistance of the main shaft is enhanced, so that the main shaft can be more stable when bearing high load and rotating, and damage caused by fatigue is reduced, then the outer lubricating shaft sleeve simplifies the lubricating process, reduces the maintenance cost, and ensures that the main shaft is always fully lubricated during operation, and the operation efficiency is improved, so that the wear resistance, fatigue resistance and lubrication are comprehensively solved through the cooperation, and the overall performance of the generator main shaft is significantly improved, the service life and operation efficiency of the main shaft are improved through the wear-resistant and fatigue-resistant structure, the influence of friction and wear is reduced, and the alternating stress borne by the generator main shaft is dispersed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to make the technical scheme of the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments will be briefly introduced as follows. Obviously, the accompanying drawings in the following description only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is an overall structure schematic view of the utility model;

[0019] Figure 2 It is an outer lubrication channel structure schematic view of the utility model;

[0020] Figure 3 It is an inner self-grinding spindle structure schematic view of the utility model;

[0021] Figure 4 It is an outer lubrication shaft sleeve structure schematic view of the utility model;

[0022] Figure 5 It is an inner lubrication shaft sleeve structure schematic view of the utility model.

[0023] Mark explanation:

[0024] 1, generator main shaft body;2, wear-resistant protective layer;3, outer lubrication channel;4, shaft seat;5, mounting hole;6, inner self-grinding ring;7, fixed clamping groove;8, fixed clamping block;9, inner self-grinding spindle;10, shaft end self-grinding ring;11, annular inner lubrication channel;12, inner lubrication hole;13, outer lubrication shaft sleeve;14, oil inlet;15, fastening bolt;16, shaft sleeve sealing ring;17, inner lubrication shaft sleeve;18, resonance hole;19, lubricating steel ball. Specific implementation

[0025] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further described in detail in conjunction with the drawings.

[0026] The utility model provides a kind of generator main shaft with wear-resistant fatigue-resistant structure as shown in Figures 1-5 It includes generator main shaft body 1, for constituting the main body of generator main shaft;

[0027] Wear-resistant protective layer 2 is covered on the surface of generator main shaft body 1, for enhancing wear-resistant ability, and outer lubrication channel 3 is provided on the outside of generator main shaft body 1, inner self-grinding ring 6 is arranged in the inside of generator main shaft body 1, fixed clamping groove 7 is provided in the inside of inner self-grinding ring 6, fixed clamping block 8 is inlaid in the inside of fixed clamping groove 7, and inner self-grinding spindle 9 is fixedly installed on the outside of fixed clamping block 8;

[0028] The shaft end self-grinding ring 10 is arranged at the other end of the inner self-grinding shaft 9 and is used to disperse stress, and the inside of the generator main shaft body 1 is provided with an annular inner lubricating channel 11, and the outside of the generator main shaft body 1 is provided with an inner lubricating hole 12.

[0029] The outer lubricating sleeve 13 is sleeved on the outside of the generator main shaft body 1 and is used to lubricate the surface of the generator main shaft, and the outside of the outer lubricating sleeve 13 is provided with an oil inlet 14, and the inside of the outer lubricating sleeve 13 is inlaid with an inner lubricating sleeve 17, the inside of the inner lubricating sleeve 17 is provided with a resonance hole 18, and the inside of the resonance hole 18 is provided with a lubricating steel ball 19. When the outer lubricating sleeve 13 is injected with lubricating oil, the outer lubricating sleeve 13 rotates with the generator main shaft, and through the shaking of the inner lubricating sleeve 17 and the lubricating steel ball 19, the lubricating oil penetrates layer by layer, part of which enters the outer lubricating channel 3 to lubricate the outside of the generator main shaft body 1, and part of which enters the annular inner lubricating channel 11 to lubricate the inside of the generator main shaft body 1. Such a design makes the generator main shaft have a wear-resistant and fatigue-resistant structure.

[0030] As shown in Figure 1 , Figure 2 and Figure 3 , the wear-resistant protective layer 2 is tightly attached between the wear-resistant protective layer 2 and the generator main shaft body 1. The material of the wear-resistant protective layer 2 is aluminum oxide. The outside of the generator main shaft body 1 is first attached with the wear-resistant protective layer 2, which can enhance the wear resistance of the generator main shaft body 1. The rear end of the generator main shaft body 1 is fixedly installed with a machine shaft seat 4. The outside of the machine shaft seat 4 is provided with a mounting hole 5. The machine shaft seat 4 and the mounting hole 5 facilitate the installation and use of the generator main shaft on the matching generator. The inner self-grinding ring 6 is provided with a fixed clamping groove 7, and the outer fixed clamping block 8 of the inner self-grinding shaft 9 is clamped and connected. The fixed clamping block 8 is used in cooperation with the fixed clamping groove 7. The inner self-grinding ring 6 and the shaft end self-grinding ring 10 play a role in dispersing stress transmitted to the inner self-grinding shaft 9.

[0031] As shown in Figure 1 , Figure 4 and Figure 5 , the outer lubricating sleeve 13 is penetrated by a fastening bolt 15, the front end of the fastening bolt 15 is threadedly connected with a sleeve sealing ring 16, and the sleeve sealing ring 16 is used to close both ends of the outer lubricating sleeve 13 to reduce the probability of lubricating oil leaking from both sides of the outer lubricating sleeve 13 during self-lubrication. The number of lubricating steel balls 19 is set to be multiple, and the multiple lubricating steel balls 19 are arranged in an annular array on the inner lubricating sleeve 17. When the outer lubricating sleeve 13 rotates with the generator main shaft, the inner lubricating sleeve 17 and the lubricating steel ball 19 shake to make the lubricating oil penetrate layer by layer, thereby completing the self-lubrication of the generator main shaft.

[0032] The utility model discloses a generator main shaft with wear -resisting and fatigue -resisting structure, which belongs to the field of generator main shaft, and comprises a generator main shaft body 1, a wear -resisting protective layer 2, an inner self -abrasive mandrel 9, an outer lubrication shaft sleeve 13, an inner lubrication shaft sleeve 17 and a lubricating steel ball 19, an outer lubrication channel 3, an inner lubrication hole 12 and an annular inner lubrication channel 11.

[0033] The above only describes some exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled person in the art, under the condition of not deviating from the spirit and scope of the utility model, can modify the described embodiment in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the utility model claims.

Claims

1. A generator main shaft having a wear-resistant and fatigue-resistant structure, characterized by: The utility model relates to a generator main shaft body (1) for constituting the main body of generator main shaft, wear -resistant protective layer (2) covers the surface of generator main shaft body (1) for enhancing the wear -resistant ability, and the outside of generator main shaft body (1) is provided with outer lubricating channel (3), the inside of generator main shaft body (1) is provided with inner self -polishing axle ring (6), the inside of inner self -polishing axle ring (6) is provided with fixed clamping groove (7), fixed clamping block (8) is inlaid in the inside of fixed clamping groove (7), and inner self -polishing mandrel (9) is fixedly installed at the outside of fixed clamping block (8). Shaft end self -polishing ring (10) is arranged at the other end of inner self -polishing mandrel (9) for dispersing stress, and the inside of generator main shaft body (1) is provided with annular inner lubricating channel (11), and the outside of generator main shaft body (1) is provided with inner lubricating hole (12). Outer lubricating bushing (13) is sleeved at the outside of generator main shaft body (1) for lubricating the surface of generator main shaft, and the outside of outer lubricating bushing (13) is provided with oil inlet (14), and inner lubricating bushing (17) is inlaid in the inside of outer lubricating bushing (13), and resonance hole (18) is formed in the inside of inner lubricating bushing (17), and lubricating steel ball (19) is arranged in the inside of resonance hole (18). The wear -resistant protective layer (2) is closely attached between the generator main shaft body (1), and the material of wear -resistant protective layer (2) is: aluminium oxide. The rear end of generator main shaft body (1) is fixedly installed with machine shaft seat (4), and the outside of machine shaft seat (4) is provided with mounting hole (5).

2. A generator main shaft having a wear-resistant and fatigue-resistant structure according to claim 1, characterized in that: The fixed clamping groove (7) formed in the inside of inner self -polishing axle ring (6) is clamped and connected with the fixed clamping block (8) fixedly installed at the outside of inner self -polishing mandrel (9), and the fixed clamping block (8) is used in cooperation with fixed clamping groove (7).

3. A generator main shaft with wear-resistant and fatigue-resistant structure according to claim 1, characterized in that: The outside of outer lubricating bushing (13) penetrates fastening bolt (15), and the front end of fastening bolt (15) is threadedly connected with bushing sealing ring (16).

4. A generator main shaft having a wear-resistant and fatigue-resistant structure according to claim 1, characterized in that: The number of lubricating steel ball (19) is multiple, and the plurality of lubricating steel ball (19) is arranged in annular array on inner lubricating bushing (17).

5. A generator main shaft having a wear-resistant and fatigue-resistant structure according to claim 1, characterized in that: ​ 6. A generator main shaft having a wear-resistant and fatigue-resistant structure according to claim 1, characterized in that: ​

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